Methanol to Gasoline - ExxonMobil English
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Transcript of Methanol to Gasoline - ExxonMobil English
ExxonMobil Methanol to GasolineExxonMobil Methanol to GasolineCommercially Proven Route Commercially Proven Route for Production of Synthetic Gasolinefor Production of Synthetic Gasoline
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
Routes for Synthetic Transportation FuelRoutes for Synthetic Transportation Fuel
SynGasSynGasGenerationGeneration
Methanol toMethanol toGasolineGasolineSteam
Natural GasCoal
BioMass
PrimarilyGasoline
MethanolMethanolGenerationGeneration
Commercial technology with multiple technology suppliers
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.
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
MTG Product YieldsMTG Product Yields
3200Gasoline, bbl/Day
420LPG, bbl/Day
96.6Fuel Gas, bbl FOE/Day
ProductionPer 1000 tonnes MeOHProducts
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
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
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
New Zealand Synfuel PlantNew Zealand Synfuel Plant
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
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
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
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
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
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
Methanol to GasolineMethanol to GasolineCommercially Proven Route for GasolineCommercially Proven Route for Gasoline