0426937-A1 is referenced by 38 patents and cites 3 patents.

This invention relates to the improvement of the so-called Pressure Swing Adsorption system, which comprising four units of the adsorption column with a carbon type adsorbent therein to be used cyclically in sequence a serial processes of adsorption, re-adsorption, desorption and pressurization, more particularly this invention is purposed to improve the recovery efficiency of a primary component gas containing combustible components such as CH4 and H2 by means of an innovative system which is characterized in that:; [1] the desorption process is divided into three stages such as primary, secondary and tertiary desorption stage, then a gas mixture with CH4 and CO2 desorbed in the secondary stage, which is exhausted to the outside in the conventional PSA device, is recovered into a reservior, and CO2-rich gas desorbed in the tertiary stage is obtained from the PSA device produced as the product CO2 gas; and [2] In the re-adsorption process, recovered gas is fed into the re-adsorption column to adsorb the CO2 excessively by using a higher partial pressure of preheated CO2 gas. a

Title
Gas recovery system with excessively re-adsorbable process in pressure swing adsortion device.
Application Number
EP19900109020 19900514
Publication Number
0426937 (A1)
Application Date
May 14, 1990
Publication Date
May 15, 1991
Inventor
Nishino Chikashi
JP
Kawasaki Shunji C O Saibu Gas
JP
Ohta Kei C O Saibu Gas Co Ltd
JP
Kinoshita Natsuo C O Saibu Gas
JP
Urano Shoji C O Saibu Gas Co L
JP
Assignee
Mitsubishi Petrochem Eng
JP
Saibu Gas Co
JP
IPC
B01D 53/04
B01D 53/047
B01D 53/04
B01D 53/047
B01D 53/04
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