UOP SeparexTM Membrane Technology

UOP SeparexTM Membrane Technology

© 2009 UOP LLC. All rights reserved. UOP 5241E-01

Agenda

Membrane Technology Overview Pretreatment Options Flow Scheme Options Commercial Experience

UOP 5241E-02

Regions of Use for Acid Gas Technologies

1000

100

10

1.0

0.1

Part

ial p

ress

ure

of a

cid

gas

in fe

ed, p

sia

Partial pressure of acid gas in product, psia0.001 0.01 0.1 1.0 10 100

SeparexTM

Membrane

UOP 5241E-03

What Is a Membrane?

A semi-permeable film of various: Materials: Cellulose Acetate (CA), Polyimide

(PI), Polyamide, Polysulfone, Silicone Types: Asymmetric or Composite Construction: Spiral-Wound or Hollow Fiber

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Asymmetric Membranes

Single polymer Thin selective layer Porous support layer

Non-porous LayerNonNon--porous Layerporous Layer

Porous LayerPorous Layer

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Composite Membrane Structure

Composite MembranesTwo or more polymersThin layer of highly optimized polymerMounted on an asymmetrical structureHighly tailored properties at low cost

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Membrane Elements - Spiral Wound

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Spiral Wound Membrane Element and Tube

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Hollow Fiber Membranes

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Not A Filtration ProcessSolution-Diffusion Based Separation Process

–Components dissolve into membrane surface and diffuse through it

–More soluble components permeate quicker

FastSlow

Hig

h Pr

essu

re

Low

Pre

ssur

e

CO2, H2S,H2O

Hydrocarbons, N2

Separex Membranes

Membranes are characterized by permeability (flux) and selectivity UOP 5241E-11

Driving Force

Membrane

Membrane

PCO2PCO2

High Pressure(Feed)

Low Pressure(Permeate)

A pressure differential across the membrane

PCO2PCO2

UOP 5241E-12

Separex Membranes Regions of Use

Flow Rates: Economical only for > 5 MMSCFD

Feed Pressure: Up to ~ 2,000 psiA (138 barA)

Permeate Pressure: Typically below ~50 psiA (3.5 barA)

p (FeedPermeate): 1,500 psi max (100 barA)

Feed Temperature: 60 to 150°F (16 to 65°C)

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Agenda

Membrane Technology Overview Pretreatment Options Flow Scheme Options Commercial Experience

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Pretreatment Design Considerations

Feed Composition– CO2 Content or Percentage of CO2 Removal – Heavy Hydrocarbons

Feed Contaminants– Compressor Oils– Well Additives– Pipeline Corrosion Inhibitors

All Membranes Require Some Form of Pretreatment

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Standard Pretreatment

Filter Coalescer

Non-Regenerative

AbsorbentBed

Feed

Particle Filter

Heater

Membrane

Removes feed contaminants such as lube oil and corrosion inhibitor It is not meant for removal of heavy HC tail as in very

rich feed gasUOP 5241E-17

Particle FilterHeater Membrane

MemGuard™RegenerableAdsorbent

System

Enhanced UOP MemGuard™ Pretreatment

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Filter CoalescerFeed

Regenerable adsorbent unit replaces the non-regenerative absorbent bedProvides efficient dew point depressionCan deal with varying levels of feed gas contaminants

MemGuard Flow Scheme

Adsorbing Bed(s)

ParticleFilter

Filter Coalescer

Feed

Liquids

Clean GasRegen Gas

Blower

RegeneratingBed

Regen GasSeparator

Regen Heater

Regen GasCooler

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MemGuard System Performance

0

100

200

300

400

500

600

700

C6 C7 C8 C9+

Pretreatment Feed GasPretreatment Discharge Gas

Hyd

roca

rbon

Con

tent

, ppm

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Benefits of MemGuard System

Selectively removes heavy HC tail and hence can provide efficient dew point depression MemGuard™ product gas is bone dry which allows

use of carbon steel metallurgy If permeate gas is to be sequestrated, additional

dehydration is typically not required

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Agenda

Membrane Technology Overview Pretreatment Options Flow Scheme Options Commercial Experience

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Flow Scheme Options

1 Stage1 Stage

2 Stage2 Stage

Pre-Membrane

Pre-Membrane

HybridHybrid

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Flow Schemes

Allows greater CO2 removalHigh hydrocarbon recoverRequires recycle compressor

Feed

Residue

Permeate

Feed

Residue

Permeate

Feed

Residue(Low H2S/CO2)

Permeate(High H2S/CO2)

No moving partsSimple, reliable operationLow hydrocarbon recovery

Feed with high CO2 Intermediate hydrocarbon recoveryReduced compression

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Hybrid

Debottleneck existing plants or reduce Amine unit sizeAllows high CO2 removal, low ppm of CO2 & H2S as in LNG

productionCan minimizes capital and operating costs

Feed

To Boiler

Single StageMembrane

Amine System

xxxx

FiltrationSystem

Reflux XXXX

TreatedGas

To Acid Gas

Cooler

To/FromAmine

Reboiler

XXXX

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Effect of CO2 Removal

0

2

3

4

1

0 20 40 60 80 10060

80

90

70

100

% CO2 Removed

Rel

ativ

e A

rea

Req

uire

men

t

% H

ydro

carb

on R

ecov

ery

(1 S

tage

)

One StageSystem

MultistageSystem

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Effect of Number of Stages

75%

80%

85%

90%

95%

100%

0% 20% 40% 60% 80% 100%

Percentage CO2 Removal

Hyd

roca

rbon

Ret

entio

n

One Stage

Two Stage

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Effect of Feed Pressure on Performance

0.0

0.4

0.8

1.2

1.6

2.0

400 600 800 1000 1200 1400 1600

Feed Pressure, psia

Rel

ativ

e A

rea

or L

osse

s

HydrocarbonLosses

MembraneArea

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0.6

1.4

1.8

2.2

2.6

3.0

0 40 80 120 160

Permeate Pressure, psia

Rel

ativ

e A

rea

or L

osse

s

HydrocarbonLosses

MembraneArea

Effect of Permeate Pressure on Performance

1.0

UOP 5241E-29

Effect of Feed Temperature on Performance

0.5

0.7

0.9

1.1

1.3

1.6

70 90 110 130 170

Operating Temperature, °F

Rel

ativ

e A

rea

or L

osse

s

HydrocarbonLosses

MembraneArea

150

UOP 5241E-30

Agenda

Membrane Technology Overview Pretreatment Options Flow Scheme Options Commercial Experience

UOP 5241E-32

Separex Membranes : A Proven Technology

• World-Scale Processing Plants Delivered as Modular Packaged Equipment• Advanced Pretreatment Demonstrated to Improve Element Life• Off-shore Experience

Large Separex Membrane Projects

2% 2%3%5%20%3%3%3%20%8%21%5%

7% 6.5%12%70%50%6.7%6.8%9%

40%44%40%17%

200 550+450

240 12032

107218234254680620163

NigeriaPakistanPakistanMexico

Thailand *EgyptEgyptEgypt

IndonesiaMalaysia *Thailand *Thailand

CO2Outlet

CO2InletMMSCFDLocation

5%25%176S.America *2.5%5%981Spain6%65%34Tunisia*

4%38%46Indonesia3%9%117Egypt

10%35%520Thailand *

In Construction

* Offshore

Ease of Operation – Remote Plants

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Pakistan II Overall Layout

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Pakistan II Expansion Skids

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Pakistan II MemGuard System

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Egypt I Plant Layout

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Egypt I Plant –2nd-Stage Membrane Skid

Carbon Guard Bed

2nd Stage Membrane

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Recent Project Offshore

< 540 maxMercury, μg/Sm3

Hydrocarbon Recovery: 95%< 5SaturatedWater, lb/MMSCFD

<8.044.5 CO2, mol% 350630 Flow, MMSCFD

ProductFeed

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SE Asia Platform I

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Optimized Layout & Packing Density

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Installed SE Asia MemGuard System

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Opinion of our Customers

GPA 2007UOP 5241E-48

Separex Technology Summary Modular supply advantages

–High degree of shop fabrication–Minimized installation time & cost

Phased in expansion for future capacity or CO2 increase Weight and space efficiency Easy to start-up, operate, turndown and shutdown High reliability and on-stream time

–Low maintenance requirements

Lowest processing cost (~ $ 0.09/MSCF) Membranes are excellent dehydrators Advanced pretreatment and materials Membranes operate in gas phase (no flammable liquids,

refrigerants or chemicals) Meets API-521 RP for system inventory blowdown during ESD

UOP 5241E-49

Separex Technology Summary

Synergies with other UOP technologies with one system wide performance warrantyUnparallel capabilities

– UOP manufactures its own membranes– Membrane and Pretreatment development program– Supply of continually improved membranes

Extensive commercial experienceLong-term proven commitment

– Ongoing operational support– Remote process monitoring

UOP 5241E-50

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