Reducing methanol emissions from a syngas unit

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

C - Chemistry, Metallurgy

01

B

C01B 3/52 (2006.01) C10K 1/00 (2006.01) C10K 1/06 (2006.01) C10K 1/08 (2006.01)

Patent

CA 2277538

Methanol emissions in the CO2 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 CO2 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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