PDVSA CDU Application Presentation - Process NMR … presentation.pdf · REFINERIA ISLA (CURAZAO) S.A. TABLE OF CONTENTS Company Company objectives Installation & initial Targets

REFINERIA ISLA (CURAZAO) S.A.

Application of Foxboro Application of Foxboro InvensysInvensys

Magnetic Resonance AnalyzerMagnetic Resonance Analyzer

at Refinería Isla (at Refinería Isla (CurazaoCurazao) S.A) S.ABy

Jose CijntjeSenior QMI Engineer

Refinaria Isla S.A., Ammastad, Curacao


TABLE OF CONTENTSTABLE OF CONTENTSCompanyCompany objectivesInstallation & initial TargetsRe-design of SSC & achieved results Maintenance perspective


COMPANYCOMPANY

Refineria Isla is a subsidiary of

Petróleos

De

Venezuela

Sociedad

Anónima

Objectives

SafetyProductivity

Refinery profitabilityIncrease client satisfactionImprove implementation &

Completion of projectsProductivity

PeopleTotal quality

ObjectivesObjectives

SafetyProductivity

Refinery profitabilityIncrease client satisfactionImprove implementation &

Completion of projectsProductivity

PeopleTotal quality


COMPANYCOMPANY

REFINING CAPACITY 335 MBD

DISTILLATION UNITS:3 Atmospheric 3355 High Vacuum 186

CONVERSION UNITS:1 Cat Cracker 502 Thermal Crackers 801 Platformer 181 Alkylation 9Polymerization 4

SPECIALTIES UNITS:1Naphthenic lubes 21 Paraffinic Lubes 5Asphalts: Penetration / Roofers 15 - 20


COMPANY OBJECTIVESCOMPANY OBJECTIVES

KEY REFINERY OBJECTIVEKEY REFINERY OBJECTIVE

Refinery Profitability

Maximize opportunities in incremental crude processing.


COMPANY OBJECTIVESCOMPANY OBJECTIVES

IMPLEMENTATION OF CRUDE IMPLEMENTATION OF CRUDE MANAGEMENT PROJECTMANAGEMENT PROJECT

Maximize yields of more valuable productsMaximum utilization of crude potential and minimize loss during crude switchPlatformer operating condition are based on the naphtha specs at the Crude Distiller


INSTALLATION & INIT. TARGETSINSTALLATION & INIT. TARGETS

EQUIPMENT TO BE INSTALLED EQUIPMENT TO BE INSTALLED ON A TRIAL BASISON A TRIAL BASIS

Foxboro Invensys to supply:• MRA Analyzer & required analyzer data • Required sample conditioning system • Initial models for prediction of all required parameters

Isla to provide:• Sample transport lines for the crude, kerosene &

naphtha samples• Utilities• Power requirements• Lab analysis for validation



CRUDE UNIT 3CRUDE UNIT 3

Rate capacity 30.000 tons/dayCrude handled 26 – 29 APIModes of operation Paraffinic crude

General Purpose crudeMode switch frequency Every 2-3 days



MRAMulti Purpose Single

SchedularSoftware version 3.0

D- magnet



INSTALLMENT MRA AT ATMOSPHERIC INSTALLMENT MRA AT ATMOSPHERIC DISTILLING UNIT CDDISTILLING UNIT CD--33

Analyzer shelter with all required utilities availableSample take-off and return points for crude at a short distance (60 m) from the analyzer shelter. Crude sample can be transported at ambient conditionExisting naphtha supply & return line available at analyzer shelterKerosene take-off & return point at a distance of 150 m.



SAMPLE CONDITIONING POINTS OF ATTENTION

Thermal stress to ceramic part MRA sample probe:Crude temperature @ 35Naphtha temperature @ 130Kerosene temperature @ 130

Cross contamination of sample in MRA probeStream sequence: Kerosene – Naphtha - CrudeSample return during flushing through the probe



TARGETSTARGETS

Measurement Achieved

Crude analysis No

Kero analysis Yes

Naphtha anlysis Yes



ISLA MRA PERFORMANCE ISLA MRA PERFORMANCE vsvs LAB LAB MEASUREMENTMEASUREMENT

Stream Kero Kero NaphthaParameter Flash Freezing End Point

Avg diff. -2 -1 4

Avg diff. 2 2 3Std Dev



INITIAL MRA CRUDE ANALYSIS INITIAL MRA CRUDE ANALYSIS UNSUCCESSFULLUNSUCCESSFULL

Stability of the Crude sample temperature dependent Crude sample phase separate along the sample lineInitial chosen stream sequence Kerosene – Naphtha -CrudeWax deposition within the MRA sample loop & probe while processing paraffinic crude


RERE--DESIGN & ACH. RESULTSDESIGN & ACH. RESULTS

RERE--DESIGN MRA SAMPLE SYSTEMDESIGN MRA SAMPLE SYSTEMBring crude sample temperature to minimum 60 C & maximum of 70 C at take-off through MRA probeWhile flushing through MRA probe kerosene & naphtha Sample must be brought to the same temperature of 60 CFlushing through SSC & MRA probe must be routed to sample returnPrevent sample cross contamination in SSC & MRA probe



MRA SAMPLE TEMPERATURE MRA SAMPLE TEMPERATURE CONTROLCONTROL

Crude Fast Loop heater at sample take-off

Sample Heater with PID control at MRA for temperature control sample through MRA probe



Crude Fast Loop Heater



SSC dwg



SSC inside



SSC &

MRA



ISLA MRA MEASURING RESULTS ISLA MRA MEASURING RESULTS POST REPOST RE--DESIGN OF SSCDESIGN OF SSC

MRA Parameters with Corresponding Lab Data

Kero Freeze & Flash

Naphtha T10, T50,T90, FBP



Kero Freeze Validation

-58.0

-56.0-54.0

-52.0

-50.0-48.0

-46.0

-44.0-42.0

-40.0

2001/09

/272001/09

/282001/09

/292001/09

/292001/09

/302001/09

/302001/10

/042001/10

/062001/10

/072001/10

/092001/10

/112001/10

/122001/10

/122001/10

/132001/10

/142001/10

/152001/10

/16

Lab NMR

Kero Frz. val.



Kero Flash Validation

30

35

40

45

50

55

60

2001

/09/27

2001

/09/29

2001

/09/30

2001

/10/01

2001

/10/04

2001

/10/06

2001

/10/08

2001

/10/10

2001

/10/12

2001

/10/14

2001

/10/16

Lab NMR

Kero Frz. val.



Naphtha T10 Validation

80859095100105110115120

9/27/0

19/2

9/01

10/1/0

110/

3/01

10/5/0

110/

7/01

10/9/0

110/

11/01

10/13/

0110/

15/01

10/17/

01

Lab NMR

Naphtha T10 val.




100

110

120

130

140

150

9/27/0

19/2

9/01

10/1/0

110/

3/01

10/5/0

110/

7/01

10/9/0

110/

11/01

10/13/

0110/

15/01

10/17/

01

Lab NMR

Naphtha T50 val




135140145150155160165170175

9/27/0

19/2

9/01

10/1/0

110/

3/01

10/5/0

110/

7/01

10/9/0

110/

11/01

10/13/

0110/

15/01

10/17/

01

Lab NMR

Naphtha Endpoint




135140145150155160165170175

9/27/0

19/2

9/01

10/1/0

110/

3/01

10/5/0

110/

7/01

10/9/0

110/

11/01

10/13/

0110/

15/01

10/17/

01

Lab NMR

Naphtha T90



MRA PARAMETERS WITHOUT MRA PARAMETERS WITHOUT CORRESPONDING LAB DATACORRESPONDING LAB DATA

Naphtha PIONA

Kero FBP

Crude API, sulfur, n-parafins, cumulative cutpoints & yields



AVAILABILITY & UTILIZATIONAVAILABILITY & UTILIZATIONAvailability Utilization

January 02 98% 98%

February 02 64% 64%

March 02 98% 98%



MRAMRAOptimizerROMEO

OptimizerROMEO

APCAPC

DCSDCS PIPI

PLANT

PLANT



Crude Adjustment

0

10

20

30

40

50

60

70

80

90

100

-150 50 250 450 650 850 1050

CutPoint Deg C

WT%

Yie

ld

BeforeAfterNMR

Crude Reconcilation


MAINT. PERSP.MAINT. PERSP.

PREVENTIVE MAINTENANCE MRAPREVENTIVE MAINTENANCE MRA

Cleaning sample loop filtersCleaning air conditioning filtersChecking gas detector magnet compartmentReplace switching valves


MAINT. PERSP.MAINT. PERSP.

CORRECTIVE MAINTENANCECORRECTIVE MAINTENANCE

August ’01 – March ’02

Still waiting for the first one

Documents

PDVSA CDU Application Presentation - Process NMR … presentation.pdf · REFINERIA ISLA (CURAZAO) S.A. TABLE OF CONTENTS Company Company objectives Installation & initial Targets