Pneumatic gas pre-heater HON 901 - Honeywell Process

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Pneumatic gas pre-heater HON 901

Product information

2

SEP nach PEDArt. 3, Abs. 3

Pneumatic Gas Pre-heater HON 901

application• For gas pre-heating, for example, to prevent ice formation and hydrate formation• Can be used for low capacities• Gas for cyclone tube (Ranque-Hilsch effect) and control gas pre-heating are separate circuits

Therefore, 2 different gases can be used• Fully self-sufficient as pre-heating does not require any external energy• Suitable for gases in accordance with DVGW Worksheet G 260 and neutral, non-aggressive gases; other gases on request

characteristics• Simple construction• Easy integration in existing gas pressure control systems 1)• Minimal tubing requirements• Cyclone tube without any moving internal parts• Entire circuitry is integrated in the safety system in accordance with DVGW Worksheet G 491• For the function, a supercritical pressure ratio at cyclone tube inflow is necessary• External energy is not required• No energy costs are incurred

1) note: When retrofitting with indirectly acting gas pressure regulator of the series Hon 322, Hon 332, Hon 372 dn 50, Honeywell-Kassel must be consulted with first.

attEntion! the safe function of gas heating of control gas via the pneumatic gas pre-heater Hon 901 with switch valve is only ensured in conjunction with indirect acting gas pressure regulators from the Honeywell product range. for operation, the instructions in the “General operating manual” from Honeywell must be complied with.Device-specific operating instructions, maintenance instructions, spare parts drawings, and spare parts lists are provided in the brochure “Operating and Maintenance Instructions / Spare Parts List 901.20”.

Application, characteristics, technical data

Specifications

PS 100 bar

max. permissible operating pressure pumax 100 bar

Heat output

For optimal heating capacity, a supercritical pressure ratio pd / pu ≤ 0.5

is necessary (see diagram on page 3), as well as a minimum flow rate

Qn = 200 m3/h (based on natural gas)

KG value of the components based on

natural gas with ρn = 0.83 kg/m3

HON 901

Switch valve

≈ 22.5 m3/(h · bar)

≈ 4 m3/(h · bar)

(Pressure drop for the control gas of

the pilot is negligible)

max. temperature for operation To approx. 80 °C

Surface temperature To 100 °C Danger of combustion

max. standard flow rate Qn = 30 m3/h (based on natural gas)

control gas temperature at the outlet > 15 °C

Gas connectionPipe fittings in accordance with DIN EN ISO 8434-1 (DIN 2353)

Pipe outer diameter 10 and 12 mm

Weight Approx. 3 kg

SEP classification in accordance with PEd

atEX

All mechanical components of this device are without potential ignition sources and / or hot faces. They are not subject to ATEX 95 (94/9/EC).All electronic accessories, on the other hand, meet ATEX requirements.

attEntion!

SEP nach PEDArt. 3, Abs. 3

3

100

90

80

70

60

50

40

30

20

105

0 5 10 15 20 25 30 35 40 45 50


The cyclone tube pre-heater has two circuits, the primary circuit for heat generation through the cyclone tube effect, and the secondary circuit for the pilot gas flow that must be heated.The upstream tripping valve automatically interrupts the gas flow of the primary circuit to the cyclone tube gas pre-heater when the gas consumption is zero; the gas pressure regulator station runs in the lock-up pressure pf. This takes place with the loading pressure and output pressure and/or input pressure impinged on the differential pressure measuring diaphragm in the tripping valve. At consumption zero the differential pressure is also zero; the switch valve closes automatically via the spring force. In this process the closing pressure continues to correspond to the value specified by the gas pressure regulator.

Note: If downstream from the gas pressure regulator station, gas consumption is ensured, the switch valve can be dispensed with.

A ball valve is installed upstream for test purposes, or for general switch-off of the pre-heating of the HON 901.

When the station is placed in service, after a short time the pre-heater heats up due to the cyclone effect and thus the control gas to the pilot. Downstream from the pre-heater the warm gas flow and cold gas flow are brought together again and routed into the outlet pipework downstream from the gas pressure regulator. In this process no external energy whatsoever is required.

attention! Prior to starting up the gas pressure regulator you must ensure that the ball valve upstream of the switch valve is closed. Only open the ball valve after start up and after placing the pre-heater in operation.

application of the Hon 901 depending on the pressure ratio pd / pu

Outlet pressure pd in bar

The gas pre-heater HON 901 can be used in the range: pu ≥ 2 · pd + 5

pu = Inlet pressure in bar (overpressure)pd = Outlet pressure in bar (overpressure)

Inle

t pre

ssur

e p u

in b

ar

HON 901 can b

e used

Design and operation

4



Hon 408 with Hon 901 and pilot Hon 610Gas pressure regulator in conventional design, comply with the connection arrangement of the switch valve!

Outlet pressure measuring line

Vent line connection(optionally with

vent valve HON 915)

pd measuring line

Discharge line

Loading pressure line

main valve of the

Hon 408

SSV measuring impulse connection

Vent valve HON 915

Switch valve

Inlet pressure line

Loading pressure line

PilotHon 610

Ball valve

Vent line connection(optionally with

vent valve HON 915)

Gas pre-heater Hon 901

fine mesh filter Hon 905

SSV of the Hon 408

Inlet pressure

Outlet pressure

Loading pressure

Load limiting pressure

Atmosphere

5

*



Hon 502 with Hon 901 and pilot Hon 630Gas pressure regulator with throttling diaphragm, pay attention to the connection arrangement of the switch valve!

Switch valve

Ball valve

Gas pre-heater Hon 901

Start-up valve

Throttle

Pilot Hon 630

fine mesh filter Hon 905

Inlet pressure line

Load limiting stage

Loading pressure

line

pd measuring

line

Pilot stage

Discharge line

Loading pressure lineInlet pressure line

Discharge line

Inlet pressure

Outlet pressure

Loading pressure

Load limiting pressure

Atmosphere

* Vent line connection (optionally with vent valve HON 915)

main valve of the Hon 502

6

10 00

0 001

RMG 6

50pn

eum.

Regle

r

10 03

0 075

RMG 9

01pn

eum.

Vorw

ärmer

10 00

0 160

RMG 9

05Fe

in�lte

r

10 03

0 230

Scha

ltven

til

"Betri

eb" is

t!we

nn da

s GDR

inKu

gelha

hn er

st ö�

nen,

Hinw

eis:

(wah

lweis

e mit A

tmun

gsve

ntil R

MG 91

5)At

mung

sansch

luss

leitun

gRü

ckfüh

r-

Messl

eitun

g

p dp u

p up u

*Ku

gelha

hn

Abstr

ömlei

tung

Abstr

ömlei

tung

Stelld

ruckle

itung

Messl

eitun

g

2

d

h

Rege

lstufe

p

Abstr

ömve

ntil

Grun

dplat

te

4

Eingangsdruckleitung

Abstr

ömlei

tung

Einga

ngsd

ruckle

itung

Einga

ngsd

ruckle

itung

Hilfsd

ruckst

ufe p

Stellg

erät

1

35Au

sgan

gsdr

uckm

essle

itung

Stelld

ruckle

itung

*RM

G 915

HO

N

HO

N

HO

N


Circuit diagram for gas pressure regulators in conventional design with pilot BR HON 650 (352.361-1)Sw

itch

valve

Outle

t pre

ssur

e m

easu

ring

line

Load

ing

pres

sure

line

Pneu

m. p

ilot

Fine

mes

h fil

ter

Note

: Onl

y op

en th

e ba

ll va

lve w

hen

the

gas

pres

sure

regu

lato

r is

in o

pera

tion.

Ball

valve In

let p

ress

ure

line

Inle

t pre

ssur

e lin

e

* Ve

nt li

ne c

onne

ctio

n (o

ptio

nally

with

ven

t val

ve H

ON 9

15)

Mai

n va

lveM

easu

ring

line

Retu

rn li

ne

Load

ing

pres

sure

line

Pilo

t sta

ge p

d

Load

lim

iting

sta

ge

Disc

harg

e lin

e

Disc

harg

e lin

e

Inlet pressure line

Disc

harg

e lin

e

Pneu

m. p

rehe

ater

Mea

surin

g lin

e

Base

pla

te

Disc

harg

e va

lve

7

upup

updp

p d

*

*

RMG 9

15

Messl

eitun

g

Rückf

ühr-

leitun

g

Hinwe

is:Ku

gelha

hn er

st öff

nen,

wenn

das G

DR in

"Betrie

b" ist

!

Stelldr

uckleit

ung

Ausga

ngsdr

uckme

ssleit

ung

5Sc

haltve

ntil

10 03

0 230

3Fei

nfilte

rRM

G 905

10 00

0 160

1Ste

llgerät

RMG 4

082Re

gler

RMG 6

10

Regel

stufe

p

Hilfsd

ruck-

stufe

p

Stelldr

uckleit

ung

Abstr

ömleit

ung

Messl

eitun

g

Eingan

gsdruc

kleitu

ng

Eingan

gsdruc

kleitu

ng

Abstr

ömleit

ung

Eingan

gsdruc

kleitu

ng

4pn

eum.

Vorw

ärmer

RMG 9

0110

030 0

75

Kugel

hahn

Atmun

gsansc

hluss

(wahlw

eise A

tmun

gsven

til RM

G 915

)

Abstr

ömleit

ung

h

*

dH

ON

HO

N

HO

N


Circuit diagram for gas pressure regulators in conventional design with pilot BR HON 610 (352.361-3)

Outle

t pre

ssur

e m

easu

ring

line

Load

ing

pres

sure

line

Pilo

t

Fine

mes

h fil

ter

Note

: Onl

y op

en th

e ba

ll va

lve w

hen

the

gas

pres

sure

regu

lato

r is

in o

pera

tion.

Ball

valve

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

* Ve

nt li

ne c

onne

ctio

n (o

ptio

nally

with

ven

t val

ve H

ON 9

15)

Mai

n va

lveM

easu

ring

line

Switc

h va

lve

Retu

rn

line

Load

ing

pres

sure

line

Pilo

t sta

ge p

d

Load

lim

iting

st

age

pd

Disc

harg

e lin

e

Disc

harg

e lin

e

Inle

t pre

ssur

e lin

e

Disc

harg

e lin

e

Pneu

m. p

rehe

ater

Mea

surin

g lin

e

8

p dp u

p up u

(optional)

*

Atmun

gsansc

hluss

(wahlw

eise A

tmun

gsven

til RM

G 915

)

Eingan

gsdruc

kleitu

ng

Hinwe

is:Ku

gelha

hn er

st öff

nen,

wenn

das G

DR in

"Betrie

b" ist

!

RMG 9

15

Messl

eitun

g

Regel

stufe

p

2pn

eum.

Regle

rRM

G 630

a10

010 5

77

Stelldr

uckleit

ung

5Sc

haltve

ntil

10 03

0 230

3Fei

nfilte

rRM

G 905

10 00

0 160

1Ste

llgerät

Steue

rstufe

*

Abstr

ömleit

ung

Messl

eitun

g

4pn

eum.

Vorw

ärmer

RMG 9

0110

030 0

75

Abstr

ömleit

ung

Anfah

rventi

l

Eingan

gsdruc

kleitu

ng

d

Eingan

gsdruc

kleitu

ng

Abstr

ömleit

ung

Eingan

gsdruc

kleitu

ng

Kugel

hahn

Eingan

gsdruc

kleitu

ng

Stelldr

uckleit

ung

Vordro

ssel

HO

N

HO

N



Load

ing

pres

sure

line

Note

: Onl

y op

en th

e ba

ll va

lve w

hen

the

gas

pres

sure

regu

lato

r is

in o

pera

tion.

Ball

valve

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Thro

ttle

Inle

t pre

ssur

e lin

e

* Ve

nt li

ne c

onne

ctio

n (o

ptio

nally

with

ven

t val

ve H

ON 9

15)

Switc

h va

lve

Mai

n va

lveM

easu

ring

line

Load

ing

pres

sure

line

Cont

rol s

tage

Pilo

t sta

ge

Star

t-up

valve

Disc

harg

e lin

eDi

scha

rge

line

Disc

harg

e lin

e

Pneu

m. p

ilot

Pneu

m. p

rehe

ater

optional

Mea

surin

g lin

e

Fine

mes

h fil

ter

HO

N

HO

N

9

(optinal)

Atmu

ngsa

nsch

luss

(wah

lweis

e Atm

ungs

venti

l RMG

915)

Eing

angs

druc

kleitu

ng

erwä

rmtes

Steu

erga

s

Gas-

Druc

krege

lgerä

tRegle

r

pp

p

Eing

angs

druc

k-lei

tung

Anfah

rventi

l

Stell

druc

kleitu

ng

Scha

ltven

til10

0302

30

Feinf

ilter

RMG

905

1000

0160

Gasv

orwä

rmer

RMG

901

1003

0075

Hinw

eis:

Kuge

lhahn

erst

öffne

n,we

nn da

s GDR

in"B

etrieb

" ist!

*

du

u

RMG

915

Mess

leitun

g

Abstr

ömlei

tung

*Me

sslei

tung

Abstr

ömlei

tung

Eingan

gsdruc

kleitu

ng

Eing

angs

druc

kleitu

ng

Abstr

ömlei

tung

Kuge

lhahn

Eing

angs

druc

kleitu

ng

HO

N

HO

N

HO

N



* Ve

nt li

ne c

onne

ctio

n (o

ptio

nally

with

ven

t val

ve H

ON 9

15)

Inle

t pre

ssur

e lin

e Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Inle

t pre

ssur

e lin

e

Gas

pres

sure

re

gula

tor

Pilo

t

Note

: Onl

y op

en th

e ba

ll va

lve w

hen

the

gas

pres

sure

regu

lato

r is

in o

pera

tion

Ball

valve

Fine

mes

h fil

ter

Load

ing

pres

sure

line

Gas

pre-

heat

er

Disc

harg

e lin

e

Disc

harg

e lin

e

(optional)

Star

t-up

valve

Heat

ed

cont

rol

gas

Mea

surin

g lin

e

Mea

surin

g lin

e

Disc

harg

e lin

e

Switc

h va

lve

10

Ø10

Ø12

Ø10

Ø12

Ø10

70

9521

2

60

48

137

2983

8775

4255

322

10624276


Dimensions and connections

attention!Connection assignments of the tripping valve depending on the type of gas pressure regulator. See the circuit diagrams on the previous pages in this regard.

All dimensions in mm

11


the cyclone tube – historical information

Temperature separation cold gas / warm gas through use of a tangential tube inflow was discovered in 1931 by the French physicist G. J. Ranque.Through a middle orifice discharge temperatures as low as – 50 °C have occurred (cold gas discharge). Via an opposite ring discharge a temperature increase of up to +100 °C has been determined (warm gas discharge).

From 1945 to 1948 this effect was first examined systematically by the German physicist R. Hilsch in Erlangen.

Consequently, today the effect is referred to as the “Ranque-Hilsch cyclone tube effect” after the two physicists.

Today there are still fundamental questions concerning the mode of operation of a cyclone tube that are still open in spite of all efforts. Consequently today, for the most part, cyclone tubes are still configured empirically with experiential values.A cyclone tube can be optimised for the warm gas flow, as well for the cold gas flow.When using the Ranque-Hirsch cyclone tube for the pre-heating of control gases (e. g. of pneumatic pilots) and small gas quantities no external energy whatsoever is required. Consequently no energy costs are incurred!


HON 901.002017-01© 2017 Honeywell International Inc.

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Documents

Pneumatic gas pre-heater HON 901 - Honeywell Process