Process for purifying synthesis gas by washing with aqueous solutions of amines

US10118824B2 · kind B2 · utility

Assignees

• Avril · FR
• AXENS · FR
• IFP ENERGIES NOUVELLES · FR
• Bionext · FR
• THYSSENKRUPP INDUSTRIAL SOLUTIONS AG · DE
• TOTAL RAFFINAGE CHIMIE · FR
• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• David Chiche · Shoham, IL
• Anne Claire Pierron · Vienne, FR
• Norbert Ullrich · Essen, DE

Key dates

• Filing date: Dec 16, 2014
• Grant date: Nov 6, 2018
• Expiry date: Dec 16, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B2203/147
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for purifying synthesis gas, comprising at least one stage for separating the crude synthesis gas to be treated into at least two effluents, namely a first part and a complementary part, in which the said first part is subjected to a carbon monoxide conversion stage with steam and the said complementary part is subjected to a COS and HCN catalytic hydrolysis stage, the two gas flows, namely the first part and complementary part, are then each treated separately in two stages intended to remove acid gases such as CO2 and H2S, by washing with aqueous solutions of specific amines, before a recombination stage of the two treated effluents.