ENGINEERING REPORT Professional Grade Closed Loop Extractor

ENGINEERING REPORTProfessional Grade Closed Loop Extractor

Ironfist Fabrication EX4-502 Extractor

Kirkland, WA 98034

11731 120th Avenue NE, Suite B

Essential Process Engineering

Reviewed By:

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Project: 161027-1 IronFist_EX4 Confidential-Proprietary Document

1 of 68 Propane/Butane USE ONLY

INDEX

1. SUMMARY 3

2. SOLVENT DATA 4

3. STANDARD OPERATING PROCEDURE 6

4. EXTRACTOR SYSTEM OVERVIEW 10

5. PRESSURE VESSEL CALCULATIONS 13

6. GENERAL COMPONENT SPECIFICATIONS 39

7. CHEMICAL COMPATIBILITY 55

8. WARNING SIGNS & PLACARDS 59

9. STATE SPECIFIC REQUIREMENTS 60

10. CERTIFICATE OF COMPLIANCE 67

11. PRESSURE VESSEL DRAWINGS APPENDIX A

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SUMMARY

EXTRACTOR MANUFACTURER: Ironfist Fabrication ALLOWABLE WORKING PRESSURE: 250 PSI

EXTRACTOR TITLE: EX4-502 OPERATING TEMPERATURE RANGE: -20 TO 110 ͦF

Figure 1.1 - Ironfist Fabrication EX4-502 Extractor

An engineering analysis has been performed on a Professional Grade Closed Loop Extraction system used in the

extraction of essential oils from a botanical substance by use of a Propane/Butane solvent. The Extraction system

analyzed within this report is classified as the Ironfist Fabrication EX4-502 Extractor. This system is composed of an

assembly of food grade piping and pressure vessels. The system identified within this report is based on

configurations for use as processing equipment. The Closed Loop Extraction system has been analyzed using the

American Society of Mechanical Engineers (ASME) standards B36.19M-2004, B36.10M-2004, ASME BPVC Section VIII

Division 1-2013, and NFPA-58 LP Gas Code as a BASIS FOR DESIGN ONLY. As no such standard exists for the

specification and control of Closed-Loop Extraction, a Performance based design has been completed. This report

and certificate of conformance shall demonstrate that the use of the Ironfist Fabrication EX4-502 extractor model

shown in Figure 3.1 in conjunction with those facility fire protection and safety features identified, meets all

requirements for this type of system in design and manufacturing. This report identifies minimum installation

requirements of the processing lab for safe operation per the International Building Code (IBC) 2015, International

Fire Code 2015 (IFC), International Mechanical Code 2015 (IMC), NFPA 54-2015, NFPA 497-2012, and NFPA 70-2014.

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SOLVENT DATA

Maximum Operating Temperature for this extraction system = 110 ͦF

VP Butane at 110 ͦF = 45 psig

VP Propane at 110 ͦF = 220 psig

**Considerations must be made for varying altitudes.

The Ironfist Fabrication EX4-502 extractor system reviewed in this report is certified for the use of either Propane or

Butane as the solvent medium. Vapor Pressures and corresponding Maximum Allowable Working Pressures

(MAWP) for these solvents are shown below.

Table 2.1 - Propane and Butane Vapor Pressures(Fisher Controls LP-Gas Serviceman's Handbook, 2001)

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MAWP for vessels containing Propane at 100 ͦF = 250 psi

***Vessels must meet MAWP requirements for NFPA 58.

Table 2.2 - NFPA 58 MAWP Ratings for Various Vapor Pressures

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STANDARD OPERATING PROCEDURE

GENERAL EXTRACTION SYSTEM COMPONENTS

The following is a general overview of the extraction process. Operating procedures may vary for specific extractor

models.

MATERIAL VESSEL - HOLDS TRIM BEING PROCESSED.

*SOME EXTRACTION SYSTEMS MAY USE MULTIPLE MATERIAL VESSELS.

SOLVENT TANK - CONTAINS REQUIRED AMOUNT OF

BUTANE/PROPANE

COLLECTION VESSEL - USED TO COLLECT EXTRACTED OIL AND SOLVENT AT THE END OF THE

EXTRACTION PROCESS.

PUMP - USED TO CREATE A VACUUM IN THE

SYSTEM AND TO RECOVER SOLVENT GAS FROM THE

COLLECTION VESSEL.

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LOAD TRIM INTO MATERIAL VESSEL(S)

*DO NOT EXCEED RATED MATERIAL CAPACITIES

PUMP OXYGEN OUT OF COLLECTION AND MATERIAL VESSELS

ENSURE THE CORRECT FILTERS HAVE BEEN INSTALLED IN THE BOTTOM OF THE

MATERIAL VESSEL(S)

LOAD TRIM INTO MATERIAL VESSEL(S)

CLOSE OUTPUT VALVE ON SOLVENT TANK

USE PUMP TO PUMP AIR OUT OF COLLECTION AND

MATERIAL VESSELS.

*PUMP(S) MUST BE RATED FOR USE IN AN EXPLOSIVE ENVIRONMENT AND WITH THE LISTED SOLVENTS

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TRANSFER SOLVENT TO MATERIAL VESSEL(S)

WAIT FOR SATURATION TO OCCUR

TRANSFER SOLVENT AND OIL EXTRACT TO COLLECTION VESSEL

CLOSE OUTPUT VALVE ON SOLVENT TANK

WHEN SOLVENT TRANSFER IS COMPLETE

OPEN OUTPUT VALVE ON MATERIAL VESSEL

CLOSE INPUT VALVE ON MATERIAL VESSEL

*SOLVENT TRANSFER IS TYPICALLY MONITORED BY CHANGE IN WEIGHT OF THE SOLVENT VESSEL.

OPEN OUTPUT VALVE ON SOLVENT TANK

CLOSE OUTPUT VALVE ON MATERIAL VESSEL

*TRANSFER CAN BE GRAVITY FED OR PUMP DRIVEN DEPENDING ON EXTRACTOR DESIGN.

*WAIT TIMES VARY DEPENDING ON OPERATOR PREFERENCE.

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RECOVER SOLVENT

REMOVE OIL EXTRACT FROM COLLECTION VESSEL

OPEN INPUT VALVE ON SOLVENT TANK

CLOSE OUTPUT VALVE ON

SOLVENT TANK

CLOSE INPUT VALVE AND OPEN OUTPUT

VALVE ON COLLECTION VESSEL

*SOLVENT TANK SHOULD BE 99% OF ORIGINAL WEIGHT WHEN SOLVENT TRANSFER IS COMPLETE.

USE RECOVERY PUMP TO TRANSFER

VAPORIZEDSOLVENT GAS TO SOLVENT TANK

OPEN VALVE ON THE BOTTOM OF THE

COLLECTION VESSEL AND DRAIN OIL EXTRACT TO EXTERNAL CONTAINER

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EXTRACTOR SYSTEM OVERVIEW

SYSTEM DIAGRAM - PASSIVE RECOVERY

Figure 4.1 - Ironfist Fabrication EX4-502 Extractor - In Passive Configuration

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SYSTEM DIAGRAM - ACTIVE RECOVERY

Figure 4.2 - Ironfist Fabrication EX4-502 Extractor Configuration for use in Active Recovery

Passive Recovery system does not include the Recovery pump. Recovery is driven by the use of the warming coil at

the collection vessel base and the cooling of the Solvent recovery tank. Care shall be taken to monitor temperatures

and pressures to assure the system is maintained within operating parameters. Solvent recovery is complete when

99% of solvent is acurately weighed at the Solvent vessel. Recovery by weight method shall always be used. Solvent

shall not remain within the solution.

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EXTRACTION SYSTEM

Figure 4.3 - Ironfist Fabrication EX4-502 Extractor - Actual Extraction System

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PRESSURE VESSEL CALCULATIONS

VESSEL CALCULATIONS INDEX

SOLVENT VESSEL:

Mid Section - Minimum Shell Thickness Calculation

End Caps - Ellipsoidal Head Thickness Calculation (Top and Bottom)

- Reinforcement Calculation for Top Riser Opening

- Flat Head Cover Thickness Calculation for Top Cover

- Reinforcement Calculation for Weld Bung Openings

COLLECTION VESSEL:


End Caps - Flat Head Cover Thickness Calculation for Top Cover

- Reinforcement Criteria for Openings in Flat Heads

- Reinforcement Calculation for Openings in Flat Head

MATERIAL VESSEL:


End Caps - Flat Head Cover Thickness Calculation for Top Cover

- Reinforcement Criteria for Openings in Flat Heads

- Conical Head Thickness Calculation (Bottom)

SEPARATOR VESSEL:


End Caps - Flat Head Cover Thickness Calculation for Top and Bottom Covers

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SOLVENT VESSEL

Figure 5.1 - Ironfist Fabrication EX4-502 Extractor - SOLVENT VESSEL

GENERANT 6000 PSIGSTEEL BALL VALVES

PRESSURE RELIEF VALVES

PRESSURE GAUGE

6" TRI-CLAMP

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SOLVENT VESSEL

- GENERAL DATA

RATED CAPACITY: 30 LBS OF SOLVENT

DIMENSIONS: 10 in. DIAMETER

29 in. TALL (APPROX)

0.365 in. WALL THICKNESS

OUTSIDE AREA (A): 944 in2 (APPROX)

- PRESSURE RELIEF VALVE REQUIREMENT

PRV SET PRESSURE: 1.00 X MAWP = 250 PSI - NFPA 58, 5.7.2.5

MIN PRV FLOW RATE: QMIN = 53.632 x A0.82- NFPA 58, 5.7.2.6

QMIN = 250.64 CFM

PRV RATED FLOW RATE: 272.7 CFM (SEE PRV DATA)

QTY PRVs REQUIRED: 1

- VESSEL PRESSURE RATING

MAX CERTIFIED PRESSURE: 294.9 PSI - PER ASME BPVC VIII DIVISION I (SEE CALCS ON FOLLOWING SHEETS)

*DO NOT EXCEED MAWP OF 250 PSI PER NFPA 58.

RESULT: The SOLVENT VESSEL meets ASME BPVC VIII Division I requirements for pressure vessels at 250 psi.

*VESSELS LARGER THAN 6" DIAMETER MUST BE

MARKED WITH ASME U-STAMP PER ASME BVPC VIII.

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SOLVENT VESSEL

UG-27 PRESSURE RATING BASED ON SHELL THICKNESS

MATERIAL:

t = 0.365 in

Actual wall thickness of vessel

E = 0.6 - Welded Joints

Joint Efficiency (UW-12, ASME BPVC VIII Division I)

R = 4.64 in

Inside radius of shell

S = 20000 PSI

Maximum allowable stress value

(1) Circumferential Stress:

P = (S x E x t) / (R + 0.6 x t) - UG-27, Equation 1

Maximum Allowable Pressure

P = 902.3 PSI

(2) Longitudinal Stress:

P = (2 x S x E x t) / (R - 0.4 x t) - UG-27, Equation 2


P = 1951.4 PSI

Result

316 Stainless Steel

The Maximum Allowable Pressure for the SOLVENT VESSEL with a wall thickness of 0.365 inches is 902.3

psi, based on the ASME BPVC VIII Division I UG-27 Shell Thickness Calculation.

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SOLVENT VESSEL

UG-32(d) PRESSURE RATING BASED ON THICKNESS OF ELLIPSOIDAL HEAD (TOP AND BOTTOM)

MATERIAL:

t = 0.25 in

Actual head thickness of vessel

E = 0.6 -Welded Joints


Da = 10.00 in

Length of the major axis

S = 20000 PSI


P = (2 x S x E x t) / (Da + 0.2 x t)


- UG-32, Equation 1

P = 597.0 PSI

Result

316 Stainless Steel

The maximum allowable pressure for this ellipsoidal head with a thickness of 0.25 inches is 597. psi,

based on the ASME BPVC VIII Division I UG-32(d) Ellipsoidal Head Thickness Calculation.

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SOLVENT VESSEL

1-10 ALTERNATE REINFORCEMENT CALCULATION FOR OPENINGS IN SHELLS AND FORMED HEADS

dn = 5.50 in

Finished diameter of opening (internal diameter)

tn = 0.11 in

Actual wall thickness of nozzle

Lpr1 = 1.50 in

Nozzle projection from outside of vessel wall

En = 0.6 - Welded Joints


WL = 0.25 in

Weld size (Length of Leg)

PA = 597 PSI

Maximum Allowable Pressure (Not to exceed Max Allowable Pressure for End Cap)

teff = 1 in

Effective thickness of nozzle

LR = 8 x t = 2 in

Limit of Reinforcement along vessel wall

LH = 0.679 in

Effective length of nozzle wall outside of vessel

A1 = λ = min[(dn + tn)/((Di + teff) x teff)0.5, 10] = 1.731

Area contributed by shell

A1 = 0.500 in2

A2 = tn x LH = 0.075 in2

Area contributed by nozzle projecting outward

A3 = tn x LI = 0 in2

Area contributed by nozzle projecting inward

A4 = WL2 = 0.0625 in2

Area contributed by weld

AT = 0.637 in2

Total Area Contributed

t + 0.78 x (Rn x tn)0.5 =

t x LR x max (λ/4, 1)

A1 + A2 + A3 + A4 =

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SOLVENT VESSEL

1-10 ALTERNATE REINFORCEMENT CALCULATION FOR OPENINGS IN SHELLS AND FORMED HEADS (CONTINUED)

Reff = Di/21 = 0.452 in

Effective radius of the shell

fN = 704.31 LBS

Force from internal pressure in the nozzle

fS = 569.85 LBS

Force from internal pressure in the shell

fY = 742.70 LBS

Discontinuity force from internal pressure

σavg = 3165.24 PSI

Average local primary membrane stress

σcirc = 270.07 PSI

General primary membrane stress

PL = 6060.40 PSI

Max local primary membrane stress at the nozzle intersection

Sallow = 1.5 x S x E = 18000 PSI

Allowable Stress

Ap = 3.378 in2

Area resisting pressure

Pmax = 1773.15 PSI

Result

P x Rn x (LH - t) =

P x Reff x (LR + tn) =

P x Reff x Rnc =

(fN + fS + fY)/AT =

(P x Reff) / teff =

max [2 x σavg - σcirc, σcirc] =

Rn x (LH - t) + Reff x (LR + tn + Rnc) =

Sallow / (2 x (Ap/AT) - (Reff/teff)) =

Pmax >= PA therefore this opening is properly reinforced per ASME BPVC VIII Division I, 1-10.

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SOLVENT VESSEL

UG-34(c)(2) PRESSURE RATING BASED ON UNSTAYED FLAT HEAD THICKNESS (CLAMPED)

MATERIAL:

t = 0.437 in

Actual thickness of cap

C = 0.30

d = 6.57 in

Diameter

E = 1.0 -Clamped Joint


S = 20000 PSI

Maximum Allowable Stress Value

P = [S x E x (t / d)2] / C - UG-34, Equation 1


P = 294.9 in

Result

316 Stainless Steel

Factor dependent on method of attachment from Figure

UG-34, ASME BPVC VIII Div. I

The maximum allowable pressure for this flat cover with a thickness of 0.437 inches is 294.9 psi, based

on the ASME BPVC VIII Division I UG-34(c)(2) Unstayed Flat Heads and Covers Calculation.

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SOLVENT VESSEL

UG-36 (3) REINFORCEMENT CRITERIA FOR OPENINGS IN FORMED OR FLAT HEADS

Openings QTY: 4

d1 = 0.438 in

Finished diameter of opening (largest)

d2 = 0.438 in

Finished diameter of 2nd opening (2nd largest)

p = 3.5 in

Distance between centers of openings

t = 0.437 in

Wall thickness of shell or head

Result

Nozzle opening(s) meet UG-36 (3)(a) criteria.

Nozzle openings meet UG-36 (3)(d) criteria.

No additional reinforcement calculations are required.

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COLLECTION VESSEL

Figure 5.2 - Ironfist Fabrication EX4-502 Extractor - COLLECTION VESSEL

GENERANT 6000 PSIGSTEEL T VALVE

PRESSURE RELIEF VALVE

PRESSURE GAUGE

8" TRI-CLAMP

SIGHT GLASS

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COLLECTION VESSEL

- GENERAL DATA

RATED CAPACITY: 120 LBS OF SOLVENT








QMIN = 139.00 CFM






RESULT:

*VESSELS LARGER THAN 6" DIAMETER MUST BE

MARKED WITH ASME U-STAMP PER ASME BVPC VIII.

The COLLECTION VESSEL meets ASME BPVC VIII Division I requirements for pressure vessels at 250 psi.

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COLLECTION VESSEL


MATERIAL:

t = 0.25 in




R = 3.75 in


S = 20000 PSI





P = 769.2 PSI




P = 1643.8 PSI

Result

316L Stainless Steel

The Maximum Allowable Pressure for the COLLECTION VESSEL with a wall thickness of 0.25 inches is

769.2 psi, based on the ASME BPVC VIII Division I UG-27 Shell Thickness Calculation.

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COLLECTION VESSEL

UG-34(c)(2) PRESSURE RATING BASED ON UNSTAYED FLAT HEAD THICKNESS (WELDED)

MATERIAL:

t = 0.5 in


C = 0.20

d = 8.25 in

Diameter

E = 0.7 -Double-Welded Butt Joint


S = 20000 PSI




P = 257.1 in

Result

316L Stainless Steel



The maximum allowable pressure for this flat cover with a thickness of 0.5 inches is 257.1 psi, based on

the ASME BPVC VIII Division I UG-34(c)(2) Unstayed Flat Heads and Covers Calculation.

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COLLECTION VESSEL


Openings QTY: 4

d1 = 1.540 in


d2 = 1.250 in


p = 2.88 in


t = 0.500 in


Result


Nozzle openings do NOT meet UG-36 (3)(d) criteria.

Reinforcement calculations ARE required.

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COLLECTION VESSEL

UG-39(2) REINFORCEMENT CALCULATION FOR OPENINGS IN FLAT HEADS - MULTIPLE OPENINGS

dn1 = 1.54 in

Finished diameter of opening (nozzle 1)

tn1 = 0.35 in

Actual wall thickness (nozzle 1)

dn2 = 1.25 in

Finished diameter of opening (nozzle 2)

tn2 = 0.19 in

Actual wall thickness of (nozzle 2)

p = 2.88 in


h1 = 0.00 in

Distance of inward projection (nozzle 1)

h2 = 0.53 in

Distance of inward projection (nozzle 2)

En = 0.6 - Welded Joints


WL1 = 0.188 in WL2 = 0.188 in

Weld size (Length of Leg) - Nozzle 1 Weld size (Length of Leg) - Nozzle 2

PA = 257.1 PSI

Maximum Allowable Pressure (Not to exceed Max Allowable Pressure for Cover)

tr = 0.500 in - UG-34, Equation 1

Minimum required thickness

tr n1= 0.017 in

Required nozzle thickness for MAWP (nozzle 1)

tr n2= 0.014 in

Required nozzle thickness for MAWP (nozzle 2)

CRITERIA CHECK:

AREQ1 = 0.385 in2

Required reinforcement area for opening 1

AREQ2 = 0.312 in2

Required reinforcement area for opening 2

AS1 = 0.000 in2

Area available in shell (nozzle 1)

AS2 = 0.000 in2

Area available in shell (nozzle 2)

dn2 x (t - tr) =

(dn2 x tr)/2 =

dn1 x (t - tr) =

(dn1 x tr)/2 =

d x [(C x PA) / (S x E)]0.5 =

(PA x (dn1/2)) / (S x En - 0.6 x PA) =

(PA x (dn2/2)) / (S x En - 0.6 x PA) =

Each nozzle opening shall meet the reinforement area requirment shown below per UG-

39(b)(2).

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AN1-1 = 0.583 in2

AN1-2 = 0.163 in2

AN2-1 = 0 in2

AN2-2 = 0.176 in2

AW1 = 0.071 in2

Area available in weld (nozzle 1)

AW2 = 0.071 in2

Area available in weld (nozzle 2)

AAVAIL 1 = 0.654 in2

AAVAIL 2 = 0.410 in2

Result

Per UG-37 of ASME BPVC VIII Division I, these nozzle openings are rated for a maximum pressure of

257.1 psi, without additional reinforcements being added.

2 x (Weld Leg Length)2 =

AS1 + AN1-1 + AN2-2 + AW1 =

AS2 + AN1-2 + AN2-2 + AW2 =

5 x tn22 =

Area available in nozzle projecting inward (nozzle 2)

2 x (Weld Leg Length)2 =

Area available in nozzle projecting outward (nozzle 2)

2 x h x tn1 =

Area available in nozzle projecting inward (nozzle 1)

5 x (tn1 - tr n1) x tn1 =

Area available in nozzle projecting outward (nozzle 1)

5 x (tn2 - tr n2) x tn2 =

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MATERIAL VESSEL

Figure 5.3 - Ironfist Fabrication EX4-502 Extractor - MATERIAL VESSEL

GENERANT 6000 PSIGSTEEL BALL VALVE

PRESSURE RELIEF VALVEPRESSURE GAUGE

4" TRI-CLAMP

4" TRI-CLAMP

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MATERIAL VESSEL

- GENERAL DATA

RATED CAPACITY: 4 LBS OF TRIM

DIMENSIONS: 4.125 in. DIAMETER




OPERATING TEMPERATURE: 110 ͦF




QMIN = 189.21 CFM






RESULT:

The MATERIAL VESSEL meets ASME BPVC VIII Division I requirements for pressure vessels at 250 psi.

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MATERIAL VESSEL


MATERIAL:

t = 0.13 in




R = 1.94 in


S = 20000 PSI





P = 745.3 PSI




P = 1589.4 PSI

Result

316 Stainless Steel

The Maximum Allowable Pressure for the MATERIAL VESSEL with a wall thickness of 0.125 inches is


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MATERIAL VESSEL


MATERIAL:

t = 0.625 in


C = 0.33

d = 4 in

Diameter



S = 20000 PSI




P = 1479.6 PSI

Result





316 Stainless Steel

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MATERIAL VESSEL


Openings QTY: 1

d1 = 0.600 in


d2 = 0.000 in


p = 0 in


t = 0.625 in


Result


No additional reinforcement calculations are required.

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MATERIAL VESSEL

UG-32(g) PRESSURE RATING BASED ON THICKNESS OF CONICAL HEAD (BOTTOM)

MATERIAL:

t = 0.125 in

Actual head thickness of vessel

E = 1.0 0


D = 3.88 in

Inside spherical or crown radius

α = 57.21 deg

S = 20000 PSI


P = (2 x S x E x t x cos(α)) / (D + 1.2 x t x cos(α))Maximum Allowable Pressure

- UG-32, Equation 4

P = 684.4 PSI

Result

The maximum allowable pressure for this conical head with a thickness of 0.125 inches is 684.4 psi,

based on the ASME BPVC VIII Division I UG-32(g) Conical Head Thickness Calculation.

316 Stainless Steel

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SEPARATOR VESSEL

Figure 5.4 - Ironfist Fabrication EX4-502 Extractor - SEPARATOR VESSEL

3" TRI-CLAMP

3" TRI-CLAMP

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SEPARATOR VESSEL

- GENERAL DATA

RATED CAPACITY:








QMIN = 67.32 CFM






RESULT:

The SEPARATOR VESSEL meets ASME BPVC VIII Division I requirements for pressure vessels at 250 psi.

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SEPARATOR VESSEL


MATERIAL:

t = 0.09 in




R = 1.42 in


S = 20000 PSI





P = 735.2 PSI




P = 1566.4 PSI

Result

316 Stainless Steel

The Maximum Allowable Pressure for the SEPARATOR VESSEL with a wall thickness of 0.09 inches is


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SEPARATOR VESSEL (TOP AND BOTTOM)


MATERIAL:

t = 0.625 in


C = 0.33

d = 3 in

Diameter



S = 20000 PSI




P = 2630.5 PSI

Result





316 Stainless Steel

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PUMP SPECIFICATIONS

Recovery pumps are used with Active Recovery Systems only and are not requird for Passive Configurations.

Figure 6.1 - Indicator Panel for Caresaver Type Recovery Pump

The Iron Fist Extractor identified within this report may utilize the following types of recovery pumps rated for use

with Butane (R600/ R600a refrigerants) and Propane (R290 refrigerant). The Iron Fist Extractor may come with the

following recovery pump as well based on model requested by the customer:

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PUMP SPECIFICATIONS (CONTINUED)

CM-EP / Nanjing Wonfulay Precision Machinery Co. Ltd, China

ChunMu Refrigeration

Refrigerants: R290/ R600A/ R1234YF/ R134A/ R404A/ R410A/ R22/ R23/ R431A/ R417A/ R502/ R407C

For Explosion proof rating the system must be wired per Article 500 and Article 501 of NFPA 70-2014.

Figure 6.2 - CMEP-OL Recovery Pump (Optional Recovery Pump System)

The recovery pump includes High pressure/ low pressure protection and overcurrent protection. Internal oil

separator / filtration on recovery process. Inlet filtration.

Designed to meet ARI-740 Standard (AHRI-740, Standard for Refrigerant Recovery Equipment), Plastic enclosure with

an Oil-less operation. System indicates that it is an “Anti-explosive refrigerant recovery machine”.

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IMAGE #:

Figure 6.3 - Typical connection diagram for the installation/ use of a solvent recovery system

Solvent/ Refrigerant recovery pumps which are suitable for Propane and Butane solvents selected for use are only

utilized with the active recovery system.

All recovery pumps used in the recovery of solvents using either a “Push/ Pull” configuration or a “Pull”

configuration incorporate the appropriate pressure gauge and a visual overpressure indicator light and are to only be

used when the vessels contain a Pressure relief valve.

The recovery pump incorporates a storage pressure gauge and a discharge pressure gauge. The recovery pump shall

not be capable of creating pressures in excess of 250 psi. Should a recovery pump be capable of exceeding 250 psi, a

pressure limiting valve or regulator is required.

Note: Other connections are possible. Consult the recovery pump manufacturer’s operation manual for guidance.

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PUMP SPECIFICATIONS (CONTINUED)The Haskel EXT-420 may be used as a Recovery pump for Active Recovery systems. It is recommended that when

the Haskel EXT-420 pump is used that a Spring return normally open solenoid valve be used and interlocked to a gas

detection system located within the processing area. In the event of Gas detection air flow to the Haskel EXT-420

would be stopped and maintain a safe environment during accidental release of gas/ solvent. The interlocked valve

should be located outside the room between the compressor and the recovery pump.

The Haskel pump should always be installed with a pressure regulator and flow control upstream of the pump.

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Vacuum Pump (Used to purge normal atmospheric air from the closed system):

Guidelines for incorporation of the vacuum pump:

1) The vacuum pump includes a visible vacuum gauge.

Figure 6.4 - Vacuum pump for use with Closed Loop Extraction System, EX4-502

2) Food grade mineral oil is recommended for proper lubrication of the vacuum pump system. Means

should be taken to ensure that oils used as lubrication for the vacuum pump can never contaminate the

vacuum system where contact with the Closed Loop Extractor is possible.

Figure 6.5 - Yellow Jacket Type vacuum pump specifications

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PRESSURE RELIEF VALVE SPECIFICATIONS

IMAGE #:

The Ironfist Fabrication EX4-502 Extractor vessels use Generant Series stainless steel cryogenic relief valves with 1/4

NPT port sizes. See product specifications below.

Figure 6.6 - Generant PRV Maximum Flow Rate Calculation

(SIMILAR TO PROPANE/BUTANE)

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PRESSURE RELIEF VALVE SPECIFICATIONS (CONTINUED)

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BALL VALVES

The Ironfist Fabrication EX4-502 Extractor uses a Swagelok SS-43GS6 3/8 inch ball valve and a Bradford 2 inch

stainless steel ball valve. Product specifications for these ball valves are shown below.

Figure 6.7 - Swagelok Ball Valve Specifications

Figure 6.8 - Bradford Ball Valve Specifications

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GAUGES

Figure 6.9 - Swagelok Gauge Specifications

The Ironfist Fabrication EX4-502 Extractor uses Swagelok PGI-63C stainless steel pressure gauges. Specifications for

this gauge are shown below.

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SIGHT GLASSES

The Ironfist Fabrication EX4-502 Extractor uses an Encole SAE-20 sight window on the Collection vessel. This sight

window is rated for 3045 psi. See product specifications below.

Figure 6.10 - SAE-20 Sight Glass used on Collection Vessel

= 3045 PSI

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HOSES

Figure 6.11 - SwageLOK T Series PFTE Hoses (3000 PSI rated, 3/8 inch Diameter)

All hoses used on the Ironfist Fabrication EX4-502 Extractor are PTFE lined with braided stainless steel reinforcing

jacketing. All hoses and fittings are approved for use with Butane and rated for temperatures of -65 ͦF to 450 ͦF.

Hoses are SwageLOK T and W Series type or equivalent and static dissipative. See product specifications below.

*All hoses are T Series except where noted in Appendix B.

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QUICK DISCONNECTS

Figure 6.13 - Parker Quick Disconnect, FS-372-6FP, Hose Connection (May be used)

The Ironfist Fabrication EX4-502 Extractor uses Parker Quick Disconnect fittings. The product specifications for these

fittings are shown below.

Figure 6.12 - SwageLOK SAF 2507 Tubing Specifications

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HIGH PRESSURE TRI-CLAMPS

Figure 6.14 - Parker Quick Disconnect, FS-371-6FP, Hose Connection (May be used)

**SwageLok Brand Quick Disconnect fittings rated for the Pressure and Temperatures identified within this report

are suitable for use as replacements for Parker FS type.

**An automatic Pressure Relief Valve is installed to the Solvent Vessel (any closed section where pressure is

trapped) the Solvent Vessel, Material vessels and the Collection Vessel.

Figure 6.15 - Pressure Ratings for High Pressure Clamps, 13MHP Type

The Ironfist Fabrication EX4-502 Extractor utilizes 1.5 inch, 3 inch, 4 inch, and 6 inch High Pressure stainless steel Tri-

Clamps. Product specifications for these clamps are listed below.

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HIGH PRESSURE TRI-CLAMP GASKETS

(www.ljstar.com)

Figure 6.16 - Pressure Ratings for High Pressure Clamps, 13MHP Type

The Ironfist Fabrication EX4-502 Extractor uses High Pressure Tri-Clamp gaskets. Buna-N, EPDM, and PTFE are all

acceptable materials for these gaskets. See gasket ratings below.

Figure 6.17 - Tri-Clamp Gasket Ratings11/18/2016 EPE Doc. 161027-1ER



FASTENER TORQUE REQUIREMENTS

FASTENER DIAMETER TORQUE VALUE

5/16" 10 ft-lbs

3/8" 17.5 ft-lbs

1/2" 38 ft-lbs

Table 6.18 - Tri-Clamp Torque Specifications

Table 6.19 - Stainless Steel Fastener Maximum Torque Specifications

Table 6.20 - Summary of Torque Specifications for Common Fastener Sizes

Fastener torque specifications for sanitary Tri-Clamp fittings are shown in Table 6.18 below. When manufacturer

specifications are not available, fasteners shall be tightened to 85% of their maximum rated torque value. See Table

6.19 for stainless steel maximum torque specifications. Operators are required to maintain a torque wrench and

utilize the torque wrench when tightening or assembling any vessel. Torque wrenches shall be calibrated and in

good working condition.

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CHEMICAL COMPATIBILITY

The following charts indicate compatibility of the primary components to the Propane solvent used for extraction.

Figure 7.1 - Propane and 316 Stainless Steel Compatibility

(Cole-Parmer Chemical Compatibility Database)

www.coleparmer.com/Chemical-Resistance

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http://www.coleparmer.com/Chemical-Resistance


Figure 7.2 - Propane and PTFE Compatibility



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The following charts indicate compatibility of the primary components to the Butane solvent used for extraction.

Figure 7.3 - Butane and 316 Stainless Steel Compatibility



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Figure 7.4 - Butane and PTFE Compatibility


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WARNING SIGNS/LABELS/PLACARDS

The Ironfist Fabrication EX4-502 Extractor shall have the appropriate warning labels for the use of propane and/or

butane visibly affixed. See Figures 8.1 and 8.2 for examples.

Figure 8.1 - Warning Label Example

Figure 8.2 - Required Warning Label for Propane, Butane, and other Solvents in use

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STATE SPECIFIC REQUIREMENTS

CODE PATH ANALYSIS

APPLICABLE CODES

OAR 845-025-3260Cannabinoid Concentrate and Extract Processor Requirements Effective September 20, 2016

(b) Must:

(A) Only use a hydrocarbon-based solvent that is at least 99 percent purity.

(B) Only use a non-hydrocarbon-based solvent that is food-grade.

(D) Use only potable water and ice made from potable water in processing.

The Ironfist Fabrication EX4-502 Extractor has been reviewed per the following Oregon State Codes/Standards:

(1) Cannabinoid Concentrates or Extracts. A processor with a cannabinoid concentrate or extract endorsement:

(a) May not use Class I solvents as those are classified in the Federal Drug Administration Guidance, Table I,

published in the Federal Register on December 24, 1997 (62 FR 67377).

(C) Work in an environment with proper ventilation, controlling all sources of ignition where a

flammable atmosphere is or may be present.

(E) If making a concentrate or extract that will be used in a cannabinoid edible, be endorsed as a

cannabinoid edible processor and comply with OAR 845-025-3250.

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APPLICABLE CODES (CONTINUED)

OAR 845-025-3260 (CONTINUED)

(2) Cannabinoid Extracts. A processor with an endorsement to make cannabinoid extracts:

(b) Must:

(A) Process in a:

(i) American National Standards Institute (ANSI);

(ii) Underwriters Laboratories (UL); or

(iii) The American Society for Testing and Materials (ASTM).

(D) Have equipment and facilities used in processing approved for use by the local fire code official.

(F) Have an emergency eye-wash station in any room in which cannabinoid extract is being processed.

(G) Have all applicable material safety data sheets readily available to personnel working for the

processor.

(a) May not use pressurized canned flammable fuel, including but not limited to butane and other fuels intended for

use in camp stoves, handheld torch devices, refillable cigarette lighters and similar consumer products.

(i) Fully enclosed room clearly designated on the current diagram of the licensed premises.

(ii) Room and with equipment, including all electrical installations that meet the

requirements of the Oregon Structural Specialty Code, related Oregon Specialty Codes

and the Oregon Fire Code.

(B) Use a professional grade closed loop extraction system designed to recover the solvents and built to

codes of recognized and generally accepted good engineering standards, such as those of:

(C) If using carbon dioxide in processing, use a professional grade closed loop carbon dioxide gas

extraction system where every vessel is rated to a minimum of six hundred pounds per square inch.

(E) For extraction system engineering services, including but not limited to consultation on and design

of extraction systems or components of extraction systems, use the services of a professional engineer

registered with the Oregon State Board of Examiners for Engineering and Land Surveying, unless an

exemption under ORS 672.060 applies.

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OAR 845-025-3260 (CONTINUED)

(3) Cannabinoid Concentrates. A processor with an endorsement to make cannabinoid concentrates:

(a) May not:

(A) Use denatured alcohol.

(B) If using carbon dioxide, apply high heat or pressure.

(c) May use:

(A) A mechanical extraction process;

Stat. Auth.: ORS 475B.025 & 475B.090

Stats. Implemented: ORS 475B.090

NFPA 58-2014

(b) Must only use or store dry ice in a well-ventilated room to prevent against the accumulation of dangerous levels

of carbon dioxide.

(B) A chemical extraction process using a nonhydrocarbon-based or other solvent, such as water,

vegetable glycerin, vegetable oils, animal fats, isopropyl alcohol or ethanol; or

(C) A chemical extraction process using the hydrocarbon-based solvent carbon dioxide, provided that

the process does not involve the use heat over 180 degrees or pressure.

4.1.1 Systems or Components assembled to make up systems shall be approved. Cylinders less than 120 gallons. Container

Valves, connection manifold valve assemblies, regulators, and pressure relief valves.

4.2.2 Odorization is not required as the R600/a is delivered from the manufacturer or distributor. The addition of Odorization

damages the processed materials and shall increase the risk of the process by requiring persons untrained in odorization to

perform this task. Odorization is not required and is not to be performed by processors for the purpose of oil extraction by a

Professional Grade Closed Loop Extractor. A gas monitoring system is used to detect and monitor levels of the LP-Gas used.

5.2.3.1 DOT and ASME Designed containers are used for the storage of Solvents. No other containers are used for this process.

The Extraction equipment is designed to the rules of ASME BPVC VIII Division 1, and the Butane tank (container) is a DOT

approved container with a 20 lb quantity of Butane (R600/a)

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NFPA 58-2014 (CONTINUED)

5.2.8.1 (A) The Solvent vessel is marked according to the section, “Flammable” and “Butane”

5.7.6 Pressure Gauges. Compatible pressure gauges are installed.

5.7.7 Other Container Connections. The process requires bi-directional ball valves.

5.9.4 Fittings for Metallic Pipe and Tubing

6.7.2 Installation of Pressure Relief Devices (See 5.7.2, page 41 of code)

6.18.3 Compressor Installation (Refrigerant Recovery Pump)

6.20.6 Buildings Housing Industrial Occupancies

7.3 Venting LP-Gas to Atmosphere has been evaluated. Only emergency venting would occur.

5.9.3 Pipe and Tubing. All piping and tubing have been sized and selected to meet the pressure requirements and compatibility

requirements of this process and the chemical.

5.2.4.2 The Maximum Allowable Working Pressure (MAWP) has been calculated to the current ASME Boiler and Pressure Vessel

Code VIII Division 1. The MAWP has been identified and listed within this report. The process pressure never exceeds the MAWP.

5.2.8.4 Warning Labels that contain unodorized LP-Gas products shall be marked “NOT ODORIZED”, Letter height 3/8”, Border

Width 1/16”. The equipment and the room have the appropriate warning labels affixed.

5.7.1 Materials. All processing equipment such as the recovery pump, valves, fittings, seals and extracting piping meet the

compatibility requirements for this process and solvent.

5.7.2 Pressure Relief Devices. Pressure relief valves have been installed at each vessel that can be closed. There are three (3)

pressure relief valves installed.

5.7.3 Overfilling Prevention Devices. The DOT certified container is never filled beyond it’s original supplied capacity. Butane is

recycled to its original container and weighed to determine the amount of Butane recovered.

6.20.3 Installation Requirements for Cylinders, Equipment, Piping and appliances in Buildings, Building Roofs, and Exterior

Balconies

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NFPA 497 2012

This standard has been evaluated.

INTERNATIONAL FIRE CODE 2015

5003.9 General safety precautions.

5003.9.1 Personnel training and written procedures.

5003.9.1.1 Fire department liaison.

5003.9.4 Electrical wiring and equipment.

Electrical wiring and equipment shall be installed and maintained in accordance with NFPA 70.

5003.9.5 Static accumulation.

5005.2.2 Closed systems.

5005.2.2.1 Ventilation. Where closed systems are designed to be opened as part of normal operations, ventilation shall be provided in accordance with

Section 5005.2.1.1.

General precautions for the safe storage, handling or care of hazardous materials shall be in accordance with Sections 5003.9.1

through 5003.9.10.

Persons responsible for the operation of areas in which hazardous materials are stored, dispensed, handled or used shall be

familiar with the chemical nature of the materials and the appropriate mitigating actions necessary in the event of fire, leak or

spill.

Responsible persons shall be designated and trained to be liaison personnel to the fire department. These persons shall aid the

fire department in preplanning emergency responses and identifying the locations where hazardous materials are located, and

shall have access to Material Safety Data Sheets and be knowledgeable in the site’s emergency response procedures.

When processes or conditions exist where a flammable mixture could be ignited by static electricity, means shall be provided to

prevent the accumulation of a static charge. Floors are Anti-Static. Operators wear lab coats and gloves. The floor is a non-static

floor. Process does not involve repeated motion of hoses which reduce risk of static accumulation.

Use of hazardous materials in closed containers or systems shall be in accordance with Sections 5005.2.2.1 through 5005.2.2.4.

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NFPA 70 - NATIONAL ELECTRICAL CODE

Article 500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2

Article 500.7(K) Combustible Gas Detection System Protection method utilized in processing room.

ASME BPVC VIII DIVISION I

Article 500.5(2)(1) Class I, Divison 2 location –Protection Technique K is to be used to allow for normal wiring and remove

requirement for Explosion Proof Devices.

Sections UG (General Requirements), UW (Requirements pertaining to methods of fabrication of pressure vessels), and UHA

(Requirements for pressure vessels constructed of High Alloy steel). Used in the determination of the construction and

performance of the Extractor.

Appendices 1 (Supplementary Design Formulas), 2 (Rules for bolted flange connections with ring type gaskets), 11 (Capacity

conversions for safety valves), 24 (Design rules for clamp connections). Used to calculate the performance requirements for the

Pressure relief valves, and sanitary tri-clamps.

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PROCESSING FACILITY BUILDING REQUIREMENTS

Occupancy:

Extraction Equipment Models: Ironfist Fabrication EX4-502

Solvents Used:

Solvent Quantity:

Lab Construction: IBC/ IFC Control Area Design or H-2 Type

*Processing Lab design/approval not included in this report

F-1 minimum required / Processing within an identified

Control Area designed to OAR 845-025-3260.

Flammable Gas (IsoButane/ nButane/ Propane) –

Liquified/ Gas

Not to exceed 150 lbs (30 Gallons) Per Control Area (See

local codes)

-For inclusion of non-explosion proof rated equipment,

see NFPA 70, Section 500.7(k)

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ESSENTIAL PROCESS ENGINEERING11731 120TH Avenue NE, Suite B

Kirkland, WA 98034

425-814-5389

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APPENDIX A

IRONFIST EX-4 PRESSURE VESSEL DRAWINGS

Configuration Information:

Item 8 – Material Vessel, SA-249 Grade 316 Stainless Steel

Figure 21.1 – Material Vessel Dimensional Drawing, SA-240 Stainless Steel

Figure 21.2 –Collection Vessel Top Section Assembly, SA-240 Stainless Steel

Figure 22.1 –Collection Vessel Bottom Section Assembly, SA-240 Stainless Steel

Figure 22.2 – Separator Section Assembly, SA-240 Stainless Steel

Figure 23.1 – ASME B36.19 Standard for Stainless Steel Pipe

Figure 24.1 – Solvent Vessel Assembly

Vessels are hydrostatically or pneumatically pressure tested per ASME BPVC VIII Division 1 prior to

operational use.

Other items within the configuration not described above – Weight Scale. A digital scale is used to measure the dry and full weight of the Solvent recovery tank to indicate the quantity of solvent transferred.

*The Collection Vessel includes a Pressure Gauge rated for use with Propane or Butane.

Documents

ENGINEERING REPORT Professional Grade Closed Loop Extractor