Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Patent
1998-09-10
2000-07-18
Griffin, Steven P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
423220, 423226, 4232421, 4232422, 4235731, 423650, 252373, 60 3912, 95235, 95236, C10K 108, C01B 300
Patent
active
060903562
ABSTRACT:
This invention is an integrated process which removes acidic gases such as H.sub.2 S, COS and CO.sub.2 from raw synthesis gas. The H.sub.2 S and COS is concentrated and separately recovered. The separately recovered CO.sub.2 is used as a moderator with the purified syngas in a combustion turbine. The process comprises separating H.sub.2 S and COS from a raw synthesis gas by absorption with a liquid solvent, removing coabsorbed CO.sub.2 by stripping the solvent with nitrogen, separating the H.sub.2 S and COS from the solvent and recovering sulfur from the H.sub.2 S and COS. The energy value of the CO.sub.2 and its value as a diluent in reducing NO.sub.x is recovered by using the CO.sub.2 as a moderator during combustion of the purified synthesis gas in a gas turbine.
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Jahnke Frederick C.
Volk William P.
Delhommer Harold J.
Griffin Steven P.
Texaco Inc.
Vanoy Timothy C
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