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ExxonMobil methanol to gasoline (MTG)
Syngas Technology Conference, Colorado Springs, CO
October, 2017
Mitch Hindman
Sales Manager, Refining & Gas Processing Technology
22
Methanol to Gasoline process sequence
SynGas
generation
Methanol to
gasoline(CHX)
Coal
Natural gas
BioMass
Methanol
generation
(CO + 2H2) (CH3OH)
O2/H2O
(CnH2n) n=3-10
H2O
44
Methanol to gasoline chemistry
CH3OH Light Olefins + H20
Light Olefins C5+ Olefins
Paraffins
Aromatics
Naphthenes
C5+ Olefins Gasoline
Methanol
4 Olefins 3 Paraffin + 1 Aromatic
Typical gasoline reaction
55
MTG product
• MTG produces a bi-modal distribution of mixed hydrocarbons
• The product mix is limited to LPG and sulfur free regular
octane gasoline (fully meets requirements of ASTM-4814)
Hydrocarbon types in MTG product
66
• Methanol is vaporized by
heat exchange with
reactant
• Methanol feed partially
converted to a di-methyl
ether (exothermic
equilibrium reaction)
• Hot DME/MeOH mixed
with recycle gas and fed to
parallel MTG reactors
• One reactor is off-line for
regeneration/stand-by
• Condensed water and
gasoline phases are
recovered in a product
separator and processed
down stream
ExxonMobil fixed bed MTG multi-reactor system
DME Rx
Water
Raw
hydrocarbons
MTG
RxsWater
Steam
Pre-
heater
Vaporizer Super-
heater
77
• Raw MTG gasoline is fed to de-ethanizer and stabilizer columns to remove fuel gas and LPG fractions from the gasoline
• Stabilized gasoline is split into light and heavy gasoline fractions
• Heavy gasoline is mildly hydro-treated to reduce Durene(1,2,4,5 tetra-methyl benzene) content
• Treated heavy gasoline and light gasoline or blended into finished product
Raw gasoline recovery section
88
MTG yields and properties/composition
MTG gasoline yields
Percent of
Feed
Percent of
Hydrocarbon
Product
Gas 1% 2%
LPG 5% 11%
Gasoline 38% 87%
H2O 56% -
MTG gasoline
composition properties
Octane, RON 92
Octane, MON 82
(R+M)/2 87
Paraffins, vol% 53
Olefins, vol% 12
Naphthenes,
vol%9
Aromatics,
vol%26
Benzene, vol% 0.3
Sulfur nil
Typical values based on commercial operations. Actual values will vary based on gasoline RVP and operating conditions.
1010
New Zealand SynFuel MTG plant
The New Zealand SynFuels 600 KTA Gasoline plant started up in 1985
The plant was operated until 1997
Methanol to
gasoline – MTGGas reforming and
methanol synthesis
ExxonMobil photo
1111
World’s first coal-to-liquids plant using MTG
MTG unit
Photo used with permission of Jincheng Anthracite Mining Group (JAMG)
In 2009, Jincheng Anthracite Mining Group in Shanxi Province
China started the first 2nd Generation MTG Plant: 100 KTA Gasoline
1212
Second grassroots MTG plant in construction (JAMG II)
In 2011 Jincheng Anthracite Mining Group licensed to build a
1 MTA MTG complex – Photo March 2016
Photo used with permission of Jincheng Anthracite Mining Group (JAMG)
1313
1. 2006, Shanxi, China, 100 KTA
2. 2007, Wyoming, U.S., 600 KTA
3. 2011, Shanxi, China, 1 MTA
4. 2012, Louisiana, U.S. 1.6 KTA
5. 2012, Louisiana, U.S. 500 KTA
6. 2014, U.S. 640 KTA
ExxonMobil MTG fixed bed licenses
ExxonMobil and
Air Liquide
MTG alliance ExxonMobil fixed bed MTG technology
is licensed by Air Liquide Global E&C
Solutions as part of a complete
package of technologies
• Integrated technical proposal / studies for
Gas to Gasoline or Coal to Gasoline
• All primary process licenses and process
guarantees
• Integrated and optimized process design
package
• Coordinated technical support from Air
Liquide and ExxonMobil
• MTG catalyst is supplied by ExxonMobil
1616G2G™ Pack v1 – 20Jul2015. Non-Confidential Information. Modifications or reuse not permitted without prior authorization. .
Natural Gas
Lurgi
Syngas
Plant
Air Liquide technologies
ExxonMobil technology
Lurgi
Methanol
Plant
ExxonMobi
l MTG
Plant
ASU
Off sites and Utilities (common)
1.5 B NM3/yr
5,000 T/D
Methanol
16 KBD / 700 KTA
Gasoline
Technology summary: methanol & MTG
Fluid bed MTG
• In 2014 ExxonMobil and Sinopec
Engineering Group (SEG) executed
Cooperative Development
Agreement (CDA) to develop a
new generation MTG process
• Under this R&D Program
ExxonMobil and SEG are
completing a fluid bed MTG design
based on over 30 years of research
and development on fluid bed MTG
and other fluid bed processes
* A joint activity between Mobil Research and Development
Corporation, Union Rheinishce Braunkohlen Kraftstoff AG and
Uhde GmbH-Dortmund, Germany, United States Department
of Energy, and the Ministry for Research and Technology of
the Federal Republic of Germany
1983 12 T/D Fluid Bed MTG
Demonstration Plant *
1919
SEG / ExxonMobil fluid bed MTG
• Single fluid bed reactor and regenerator replaces multiple fixed beds
• High pressure steam generation replaces recycle gas quench for temperature control
• Significant reduction in equipment and piping for lower Capex
• Lower Opex due to net steam generation and lower catalyst costs
2020
SEG fluid bed MTG pilot plant
• Pilot studies conducted at SEG Research Center, Luoyang, Henan Province, China
• Studies confirmed operating conditions and process configuration
Photo used with permission of SEG
Photo used with permission of SEG
2121
Fluid bed MTG technology collaboration
SEG, ExxonMobil, and Air Liquide have agreed to to collaborate on fluid
bed methanol-to-gasoline (MTG)
Engineering and
technology development
experience in a number
fluid bed technologies
and a wide range of
engineering services from
pre-feasibility to EPC
40+ years of MTG
catalysis and process
development, design and
operation
Experience and expertise in
licensing and engineering of all
essential elements for
conversion of coal and gas to
methanol, and integration with
methanol conversion
technologies
2222
New Zealand Synfuels MTG complexThe world’s first commercial scale gas-to-liquid plant
ExxonMobil photo
23
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