methanol to gasoline - exxonmobil english
TRANSCRIPT
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ExxonMobil Methanol to GasolineExxonMobil Methanol to GasolineCommercially Proven Route Commercially Proven Route for Production of Synthetic Gasolinefor Production of Synthetic Gasoline
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Routes for Synthetic Transportation FuelRoutes for Synthetic Transportation Fuel
SynGasSynGasGenerationGeneration
Methanol toMethanol toGasolineGasolineSteam
Natural GasCoal
BioMass
• Both are 3 Step Process• Thermal Efficiencies are Essentially Governed by
Coal or Natural Gas C/H Ratios• Coal is CH to Fuels plus CO2• Natural gas is CH4 to Fuels plus H2O
PrimarilyGasoline
FischerFischerTropsch (LT)Tropsch (LT)
MethanolMethanolGenerationGeneration
RefiningRefining PrimarilyDiesel
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Routes for Synthetic Transportation FuelRoutes for Synthetic Transportation Fuel
SynGasSynGasGenerationGeneration
Methanol toMethanol toGasolineGasolineSteam
Natural GasCoal
BioMass
PrimarilyGasoline
MethanolMethanolGenerationGeneration
Commercial technology with multiple technology suppliers
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Comparison of Fischer Tropsch with MTG*Comparison of Fischer Tropsch with MTG*
1001001000.13.2-Oxygenates-4.052.0Heavy Oil/Wax-7.014.0Gasoil/Distillate
82.340.018Naphtha10.92.01.9Butane1.19.03.1Butylenes4.32.01.7Propane0.212.02.7Propylene0.44.01.8Ethane-4.03.1Ethylene
0.710.12.0Methane
MTGSynthol FT(High Temp)
ARGE FT(Low Temp)Compound
* Shields, Fox & Chaung GPA 64th. Conv.
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MTG ScaleMTG Scale--up and Developmentup and Development
• Unique “Shape Selective” chemistry discovered in the early 1970’s
• Major Challenge – Make marketable gasoline
• Development done through the 70’s on a verity of process options
– Pilot operations up to 4 bpd in the US– Pilot operations up to 100 bpd in Germany
• Decision by New Zealand Government in 1979 to build commercial 14.5 kbd plant in New Plymouth NZ. Plant ownership 75% NZ Government/25% ExxonMobil
• Plant started up 1985 and operated successfully for ~10 years till conversion to chemical grade Methanol production
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MTG Product YieldsMTG Product Yields
3200Gasoline, bbl/Day
420LPG, bbl/Day
96.6Fuel Gas, bbl FOE/Day
ProductionPer 1000 tonnes MeOHProducts
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MTG CommercializationMTG Commercialization
• Fixed bed is generally conventional type hardware. However– Multireactor System– Cyclic Operation
• Feed can be a wide range of crude Methanol compositions (water/methanol)
• Significant challenges in catalyst scale-up and development– Yield– Cycle length
• Advantages over Fischer Tropsch– Methanol is proven and widely used technology– Methanol is storable which enhances operability between stages– Methanol to Gasoline uses gas phase conventional type fixed bed
reactors
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Schematic of New Zealand Gas to Gasoline Schematic of New Zealand Gas to Gasoline ComplexComplex
MethanolMethanolSynthesisSynthesis MTGMTG DistillationDistillation BlendingBlending
HGTHGTWater Product to Treatment
Crude Methanol
Steam
Natural Gas
Fuel Gas / LPG
Light Gasoline
Hea
vy
Gas
olin
e
Finished Gasoline
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New Zealand New Zealand SynfuelSynfuel Plant Built with Modular Plant Built with Modular Construction Construction
• A Methanol Plant Compressor in Route
• Modular Construction History– Maximum Module
• 33 by 15 Meters• 600 tonnes
– Total Lift• 66 Modules• 15,000 tonnes
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New Zealand Synfuel PlantNew Zealand Synfuel Plant
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MONTHLYProduction (‘000’s te)Stream Factor (x)
Methanol 01 ProductionMethanol 01 Production
0
20
40
60
80
100
Oct 1985 Feb 1986 Jun 1986 Oct 1985 Feb 1987
Production Stream Factor
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Methanol 02 ProductionMethanol 02 ProductionMONTHLYProduction (‘000’s te)Stream Factor (x)
0
20
40
60
80
100
Oct 1985 Feb 1986 Jun 1986 Oct 1985 Feb 1987
Production Stream Factor
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Total Gasoline YieldTotal Gasoline Yield
7
8
9
10
11
12
Nov 1985 Mar 1986 Jul 1986 Nov 1986
(te Gasoline / TJ Nat Gas)
Yield
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New Zealand MTG Unit Gasoline Yield*New Zealand MTG Unit Gasoline Yield*
75
80
85
90
95
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
12 R
VP G
ASO
YIE
LD, W
T PC
T O
F H
C
*12 RVP
ExpectedPlant
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New Zealand MTG Unit Gasoline Octane (R+O)*New Zealand MTG Unit Gasoline Octane (R+O)*
*12 RVP
ExpectedPlant
86
88
90
92
94
96
98
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
12 R
VP G
ASO
YIE
LDR
ON
+O
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New Zealand Finished Gasoline QualityNew Zealand Finished Gasoline Quality
196 - 209204.5End Point, °C94 – 96.594.9% Evaporation at 180° C
51.5 – 55.553.2% Evaporation at 100° C29.5 – 34.531.5% Evaporation at 70° C
Distillation1.74 – 2.292.0Durene Content, wt%260 – 370325Induction Period, min.728 – 733730Density, kg/m3
82 – 9085Reid Vapor Pressure, kPa82.2 – 83.082.6Octane Number, MON92.0 – 92.592.2Octane Number, RON
RangeRangeAverageAverage
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Methanol to GasolineMethanol to GasolineCommercially Proven Route for GasolineCommercially Proven Route for Gasoline