Multiple temperature level regeneration of CO.sub.2 from physica

Details Multiple temperature level regeneration of CO.sub.2 from physica Multiple temperature level regeneration of CO.sub.2 from physica

1984-12-04

1986-09-02

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 43, 55 48, 55 68, 55 73, B01D 5314

Patent

active

046093842

ABSTRACT:
To regenerate a physical solvent, loaded with sour gases, especially CO.sub.2 and H.sub.2 S, the loaded solvent is treated with a stripping gas and/or is expanded to separate absorbed CO.sub.2 and the resultant solvent is subjected to thermal regeneration to desorb H.sub.2 S. To reduce energy requirements during regeneration, the CO.sub.2 desorption is conducted on at least two different temperature levels, the second being for example 30.degree.-80.degree. C. higher than the first, with the first being conducted, e.g., at about those low temperatures conventional to low temperature absorption systems.

REFERENCES:
patent: 4050909 (1977-09-01), Ranke
patent: 4270937 (1981-06-01), Adler et al.
patent: 4294590 (1981-10-01), Linde et al.
patent: 4324567 (1982-04-01), Ranke et al.
patent: 4345918 (1982-08-01), Meissner
patent: 4370156 (1983-01-01), Goddin et al.
patent: 4378977 (1983-04-01), Linde et al.

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