Process for scavenging hydrogen sulfide using glyoxal

Details Process for scavenging hydrogen sulfide using glyoxal Process for scavenging hydrogen sulfide using glyoxal

1991-01-23

1992-02-04

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

585864, B01D 5314, C07C 711

Patent

active

050858424

ABSTRACT:
A process for scavenging hydrogen sulfide from gases, in which the hydrogen sulfide-containing gas is introduced into an aqueous glyoxal solution of at least 15% by weight strength at a pH of a solution of 5 to 11 until the molar ratio of glyoxal to hydrogen sulfide is 3 to 2. The solid reaction product obtained in this way, which contains the hydrogen sulfide in bound form, is separated off. Owing to its stability and insolubility in acids and bases, it can be disposed of without problems.

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