Process and plant for substitute natural gas

Details Process and plant for substitute natural gas Process and plant for substitute natural gas

2009-03-31

2011-10-18

Parsa, Jafar (Department: 1621)

Chemistry: fischer-tropsch processes; or purification or recover

Plural zones each having a fischer-tropsch reaction

C518S705000

Reexamination Certificate

active

08039519

ABSTRACT:
A process for producing substitute natural gas (SNG) comprising the steps of reacting a fresh syngas (11) into a methanation section (10) comprising adiabatic reactors (101-104) connected in series, with heat removal and reacted gas-recirculation, wherein the fresh syngas is fed in parallel to said adiabatic reactors. In a preferred embodiment the reacted gas is recirculated to the first reactor (101) and further dilution of the fresh gas at the inlet of the first and second reactor is achieved by steam addition.

REFERENCES:
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patent: 3970435 (1976-07-01), Schultz et al.
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patent: 4064156 (1977-12-01), McRobbie
patent: 4133825 (1979-01-01), Stroud et al.
patent: 2060686 (1981-05-01), None
Mozaffarian, M. et al. “Feasibility of Biomass/Waste-Related SNG Production Technologies”, Energy Research Center of the Netherlands, ECN Report ECN-C—03-066, Jul. 2003, pp. 1-117.

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