Process for the recovery of carbon monoxide from a purge gas containing at least carbon monoxide, nitrogen and hydrogen
AssigneeLinde Aktiengesellschaft
InventorsPeter Hesse, Siegfried Michel, Horst Weiss
Life of this patent
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Abstract
A process for the recovery of carbon monoxide from a purge gas from acetic acid synthetic containing at least carbon monoxide, nitrogen and hydrogen, wherein the purge gas (6) containing at least carbon monoxide, nitrogen and hydrogen is separated into a gas fraction (11) rich in carbon monoxide and a residual gas fraction (12, 13) rich in nitrogen and hydrogen by an adsorption process (G), preferably by a pressure change absorption process, and the gas fraction (11) rich in carbon monoxide is returned upstream of the acetic acid.
Claims13
A process for recovering carbon monoxide from a purge gas stemming from an acetic acid synthesis stage, said process comprising:
- withdrawing from said acetic acid synthesis stage a purge gas (6) containing at least carbon monoxide, nitrogen and hydrogen, subjecting said purge gas to an adsorption process (G) to separate said purge gas into a gas fraction (11) rich in carbon monoxide and a residual gas fraction (12, 13) rich in nitrogen and hydrogen, and recycling the gas fraction (11) rich in carbon monoxide upstream of the acetic acid synthesis stage (C).
Dependencies are inferred from the claim text.