Cryogenic process for fractionally removing acidic gases...

Details Cryogenic process for fractionally removing acidic gases... Cryogenic process for fractionally removing acidic gases...

F - Mech Eng,Light,Heat,Weapons

25

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F25J 3/00 (2006.01) B01D 53/14 (2006.01) C01B 3/52 (2006.01) C07C 7/11 (2006.01)

Patent

CA 1177380

CASE 1418 CRYOGENIC PROCESS FOR FRACTIONALLY REMOVING ACIDIC GASES FROM GAS MIXTURES __ A B S T R A C T . - A process is deseribed for stripping acidic gases, mainly hydrogen sulphide and car on dioxide, from natural gas or synthesis gas, especially when the per- centages of such acidic gases are high and the conven- tional processes become economically objectionable. The process is based on the use of a number of selective solvents, generally belonging to the class of esters, ethers, mixed ester-ethers and lactones, in com- bination with sequential absorbing cycles which start from the stripping of hydrogen sulphide, and comprise the regeneration of the solvents used by several expan- sion cycles : H2S and CO2 are recovered and the regenera- ted solvents recycled.

407072

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