Tail gas absorption device and tail gas absorption method in acetone cyanohydrin production

• Main Authors: LIU WEIMING, SONG SHUNLI, SUN XIULI, WU WEI, PAN XIULIANG, CHU YUHONG, WANG YANHONG, TAN CHANGBIN, LIU MINGDONG, YUAN WENBO
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BLASTING; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CONSUMING WASTE PRODUCTS BY COMBUSTION; CREMATION FURNACES; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; WEAPONS

The invention relates to a tail gas absorption device and a tail gas absorption method in acetone cyanohydrin production. The tail gas absorption device comprises a tail gas absorption tower, an acetone tank, a first pipeline used for connecting the bottom of the tail gas absorption tower and the top of the acetone tank, a second pipeline used for connecting the bottom of the acetone tank and the side line of the tail gas absorption tower, and a third pipeline used for inputting tail gas; the tail gas absorption tower comprises a heat exchange section and a filler section, and the heat exchange section is positioned above the filler section; one end, connected with the side line of the tail gas absorption tower, of the second pipeline is positioned between the heat exchange section and the filler section; and one end, connected with the tail gas absorption tower, of the third pipeline is positioned below the filler section. The problem of emission of the cyanogen-containing tail gas of the acetone cyanohydrin