Reducing methanol emissions from a syngas unit

Details Reducing methanol emissions from a syngas unit Reducing methanol emissions from a syngas unit

1998-08-13

2000-01-18

Spitzer, Robert H.

Gas separation: processes

Solid sorption

Inorganic gas or liquid particle sorbed

95166, 95168, 95180, 95191, 95237, 95264, 96108, 96202, 96290, B01D 5314, B01D 53047, B01D 1900

Patent

active

060154500

ABSTRACT:
Methanol emissions in the CO.sub.2 vent from a synthesis gas unit in an ammonia or hydrogen plant are reduced by contacting raw synthesis gas from a low temperature shift converter with recycled stripped condensate to absorb methanol. The synthesis gas is treated in a purification unit to form the CO.sub.2 vent of reduced methanol content. The condensate from the contacting step is steam stripped to form a process steam stream suitable for feed to the reformer and a stripped process condensate stream suitable for offsites polishing, a portion of which is recycled for contacting the raw synthesis gas.

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patent: 4976935 (1990-12-01), Lynn

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