ExxonMobil Methanol to Gasoline

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Primarily. Gasoline. Methanol. Generation. Commercial technology with multiple technology .... New Zealand MTG Unit Gasoline Octane (R+O)*. *12 RVP.
ExxonMobil Methanol to Gasoline Commercially Proven Route for Production of Synthetic Gasoline

Routes for Synthetic Transportation Fuel Natural Gas Coal BioMass

Fischer Tropsch (LT)

Refining

Primarily Diesel

Methanol Generation

Methanol to Gasoline

Primarily Gasoline

SynGas Generation

Steam

• 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

Routes for Synthetic Transportation Fuel Natural Gas Coal BioMass

Commercial technology with multiple technology suppliers

SynGas Generation

Steam

Methanol Generation

Methanol to Gasoline

Primarily Gasoline

Comparison of Fischer Tropsch with MTG* ARGE FT (Low Temp) 2.0

Synthol FT (High Temp) 10.1

MTG

Ethylene

3.1

4.0

-

Ethane

1.8

4.0

0.4

Propylene

2.7

12.0

0.2

Propane

1.7

2.0

4.3

Butylenes

3.1

9.0

1.1

Butane

1.9

2.0

10.9

Naphtha

18

40.0

82.3

Gasoil/Distillate

14.0

7.0

-

Heavy Oil/Wax

52.0

4.0

-

-

3.2

0.1

100

100

100

Compound Methane

Oxygenates

* Shields, Fox & Chaung GPA 64th. Conv.

0.7

MTG Scale-up 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 Yields

Products

Production Per 1000 tonnes MeOH

Fuel Gas, bbl FOE/Day

96.6

LPG, bbl/Day

420

Gasoline, bbl/Day

3200

MTG 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 Complex Finished Gasoline

Fuel Gas / LPG

Natural Gas

Crude

Distillation

Water Product to Treatment

HGT

Methanol

Steam

Gasoline

MTG

Heavy

Methanol Synthesis

Light Gasoline

Blending

New Zealand Synfuel Plant Built with Modular 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 Plant

Methanol 01 Production 100

MONTHLY Production (‘000’s te) Stream Factor (x)

80

60

40

20

0

Oct 1985

Feb 1986

Jun 1986 Production

Oct 1985 Stream Factor

Feb 1987

Methanol 02 Production 100

MONTHLY Production (‘000’s te) Stream Factor (x)

80

60

40

20

0

Oct 1985

Feb 1986

Jun 1986 Production

Oct 1985 Stream Factor

Feb 1987

Total Gasoline Yield 12

(te Gasoline / TJ Nat Gas)

11

10

9

8 Yield

7 Nov 1985

Mar 1986

Jul 1986

Nov 1986

New Zealand MTG Unit Gasoline Yield*

12 RVP GASO YIELD, WT PCT OF HC

95

90

85 Expected Plant

80

75 Jan

*12 RVP

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

New Zealand MTG Unit Gasoline Octane (R+O)*

12 RVP GASO YIELDRON+O

98 96 94 92 90 Expected Plant

88 86

Jan Feb Mar Apr May Jun *12 RVP

Jul Aug Sep Oct Nov Dec

New Zealand Finished Gasoline Quality Average

Range

Octane Number, RON

92.2

92.0 – 92.5

Octane Number, MON

82.6

82.2 – 83.0

Reid Vapor Pressure, kPa

85

82 – 90

Density, kg/m3

730

728 – 733

Induction Period, min.

325

260 – 370

Durene Content, wt%

2.0

1.74 – 2.29

% Evaporation at 70° C

31.5

29.5 – 34.5

% Evaporation at 100° C

53.2

51.5 – 55.5

% Evaporation at 180° C

94.9

94 – 96.5

End Point, °C

204.5

196 - 209

Distillation

Methanol to Gasoline Commercially Proven Route for Gasoline