gas to liquid (gtl) technology

7/27/2019 Gas to Liquid (GTL) Technology

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GAS TO LIQUIDGAS TO LIQUID

(GTL)(GTL)

TECHNOLOGYTECHNOLOGY

Attah AlfredAttah Alfred


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OutlineOutline

IntroductionIntroduction

GTL Conversion ProcessGTL Conversion Process

The Syntroleum ProcessThe Syntroleum Process Products from GTL plantProducts from GTL plant

Advantages of GTL productsAdvantages of GTL products Existing/under construction GTL plantsExisting/under construction GTL plants

Planned GTL plantsPlanned GTL plants

Potential GTL product trade flowPotential GTL product trade flow

Way forwardWay forward

ConclusionConclusion


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Introduction.Introduction.

GTL, a chemical process inGTL, a chemical process inwhich natural gas is convertedwhich natural gas is converted

to liquid hydrocarbon.to liquid hydrocarbon.


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GTL Conversion Process.GTL Conversion Process.(The Syntroleum Process.)(The Syntroleum Process.)

Methane is blended with pure oxygen underMethane is blended with pure oxygen underheat and pressure (flameless autoheat and pressure (flameless auto--thermalthermal

reformer) to produce synthesis gas (a mixturereformer) to produce synthesis gas (a mixtureof carbon mono oxide and hydrogen).of carbon mono oxide and hydrogen).

Conversion of Natural Gas to synthesis gas;Conversion of Natural Gas to synthesis gas;

Natural gas Air SteamNatural gas Air Steam CatalystCatalyst Synthesis Gas WaterSynthesis Gas Water

CHCH44 + O+ O22 + N+ N22 +H+H22OO CO + HCO + H22 + N+ N22 + 2H+ 2H22OO


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The Syntroleum Process.The Syntroleum Process.

With help from a catalyst, the synthesis gas isWith help from a catalyst, the synthesis gas istransformed into waxy hydrocarbon.transformed into waxy hydrocarbon.

The waxy hydrocarbon is cracked intoThe waxy hydrocarbon is cracked intosmaller(dieselsmaller(diesel--like) fuel molecules.like) fuel molecules.

FischerFischer Tropsch SynthesisTropsch Synthesis

Synthesis GasSynthesis Gas Catalyst Hydrocarbons Nitrogen WaterCatalyst Hydrocarbons Nitrogen Water

2H2H22 + CO+ CO + N+ N22

CCnnHH(2n+2)(2n+2) + N+ N22 + H+ H22OO


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Products from GTL plant.Products from GTL plant.

DieselDiesel Global diesel and gas oil demand 1.1 billion tpyGlobal diesel and gas oil demand 1.1 billion tpy

(22 million b/d), with a growth rate of 3% per(22 million b/d), with a growth rate of 3% peryear.year.

NaphthaNaphtha

Global demand 200 million tpy (4.7 million b/d),Global demand 200 million tpy (4.7 million b/d),most of which is due to increasing demand formost of which is due to increasing demand forbasic petrochemicals.basic petrochemicals.

Others are;Others are;

Lubricant base oils, smaller volume of LPG, nLubricant base oils, smaller volume of LPG, n--paraffins, and waxes.paraffins, and waxes.


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Advantages of GTL Products.Advantages of GTL Products.

GTL products exhibit unique highGTL products exhibit unique high--qualityqualitycharacteristics.characteristics.

Has high investment returns.Has high investment returns.

Diesel;Diesel;

Low in sulfur content.Low in sulfur content.

Has very high cetane number.Has very high cetane number.Low aromatic content.Low aromatic content.

Naphtha;Naphtha;Highly paraffinic.Highly paraffinic.

When cracked, yields higher ethylene.When cracked, yields higher ethylene.compared to typical refinery naphtha.compared to typical refinery naphtha.


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Existing/Under Construction GTL Plants.Existing/Under Construction GTL Plants.

PlantPlantLocationLocation OwnersOwners CapacityCapacityb/db/d Status as ofStatus as ofJan. 2007Jan. 2007 ExpectedExpectedstartstart--up dateup date

Mossel Bay,Mossel Bay,

South AfricaSouth Africa

PetroSAPetroSA 36,00036,000 CommissioneCommissione

d 1993d 1993

19931993

Bintula,Bintula,

MalaysiaMalaysiaShellShell 15,00015,000 CommissioneCommissione

d 1993d 199319931993

Ras Laffan,Ras Laffan,

QatarQatarOryx GTLOryx GTL

(Qatar(Qatar

petroleum &petroleum &

Sasol)Sasol)

34,00034,000 StartStart--upup 20072007

Escravos,Escravos,

NigeriaNigeriaSosalChevronSosalChevron 34,00034,000 UnderUnder

constructionconstruction20092009

Pl d GTL Pl


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Planned GTL PlantsPlanned GTL Plants

Plant LocationPlant Location OwnersOwners CapacityCapacity

b/db/d

Status as of Jan.Status as of Jan.

20072007

StartStart--upup

datedate


QatarQatarPearl GTL (QatarPearl GTL (Qatar

petroleum & Shell)petroleum & Shell)140,000140,000 Engineering &Engineering &

designdesign2010/20122010/2012


QatarQatar

ExxonMobilExxonMobil 154,000154,000 Cancelled Feb.20,Cancelled Feb.20,

20072007

__

Tinhert, AlgeriaTinhert, Algeria Still on bidStill on bid 34,00034,000 Bidder selection toBidder selection to

be completed 2007be completed 200720122012

NorthNorth--WestWest

Shelf, AustraliaShelf, AustraliaSasolChevronSasolChevron 66,00066,000 Feasibility studyFeasibility study

commencedcommenced20122012


QatarQatar

Oryx GTL (QatarOryx GTL (Qatar

petroleum & Sasol)petroleum & Sasol)

65,00065,000 MOUMOU 20132013


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Potential GTL Product Trade Flow.Potential GTL Product Trade Flow.


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Way Forward.Way Forward.

More GTL plants needed to fully harness theMore GTL plants needed to fully harness theabundant gas reserve in Nigeria.abundant gas reserve in Nigeria.

GTL products will boost industrialization,GTL products will boost industrialization,domestic consumption & export.domestic consumption & export.

GTL products will reduce pollution as theyGTL products will reduce pollution as theyare environmentally friendly.are environmentally friendly.


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Conclusion.Conclusion.

Growing reliance on gas is anGrowing reliance on gas is anemerging trend, GTL technologyemerging trend, GTL technology

will play an increasinglywill play an increasinglysignificant role as crude oilsignificant role as crude oil

resources is depleting.resources is depleting.


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gas to liquid (gtl) technology

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