Refrigeration – Processes – Circulating external gas
Patent
1983-06-03
1984-10-02
Sever, Frank
Refrigeration
Processes
Circulating external gas
62 18, 62 38, F25J 302
Patent
active
044745907
ABSTRACT:
A process for the purification of the low-boiling constituents of a compresed gas mixture, such as a mixture comprising a carbonaceous gas, by cooling to low temperatures in cyclical alternated regenerators to condense high-boiling constituents of the gas mixture comprising (1) passing the gas mixture through a first regenerator from the warm end to the cold end of the same to cool the gas mixture and to condense the high-boiling constituents of the mixture thereby producing a purified gas stream; (2) passing a scavenging gas which is at a lower pressure than said gas mixture in the first regenerator through a second regenerator from the cold end to the warm end of the same to clean this second regenerator and to re-evaporate the high-boiling constituents, (3) passing at least part of the purified gas stream through a third regenerator from the cold end to the warm end of the same to re-cool this third regenerator, preferably to the temperature of the first regenerator, and (4) compressing and recycling at least part of the scavenging gas which has passed through the second regenerator through the first regenerator from the warm end to the cold end and repeating the process as defined above.
REFERENCES:
patent: 3102015 (1963-08-01), Thumm et al.
Goodson W. Gary
Sever Frank
United States Steel Corporation
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