Chemistry: fischer-tropsch processes; or purification or recover – Treatment of feed or recycle stream
Patent
1994-11-08
1995-12-05
Lone, Werren B.
Chemistry: fischer-tropsch processes; or purification or recover
Treatment of feed or recycle stream
518703, 518704, C07C 2700
Patent
active
054729866
ABSTRACT:
A method for preparing methanol from a synthesis gas having less than 90% the stoichiometric amount of H.sub.2 to convert the CO and CO.sub.2 content of the synthesis gas to methanol by recycling into combination with such synthesis gas a sufficient amount of a hydrogen rich gas stream obtained as a permeate gas by diffusion of the process tail gas to provide a combined synthesis-recycle gas stream having at least about 95% of the stoichiometric amount of H.sub.2 to convert its CO and CO.sub.2 content to methanol. In a preferred embodiment of the invention compressed air is taken from a gas turbine to form the oxidant steam used in forming the synthesis gas, such synthesis gas in combination with the hydrogen rich recycle gas is processed through a series of methanol convertors to methanol and the non-permeate portion of the tail gas from this methanol process is returned as fuel to the gas turbine.
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Lone Werren B.
Starchem Inc.
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