Process of improving the separation of noble gases from a gas mi

Details Process of improving the separation of noble gases from a gas mi Process of improving the separation of noble gases from a gas mi

1988-03-16

1989-07-04

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 48, 55 66, 55 89, B01D 5314

Patent

active

048447153

ABSTRACT:
A process and an apparatus in a column arrangement for improving the separation of noble gases, particularly krypton, from a gas mixture containing such noble gases using an organic solvent as an absorption agent, utilizing a boiling point spacing of the charged absorption agent of less than or equal to 1.5.degree. C. below the boiling point of the pure absorption agent. The resulting pure absorption agent which is to be recycled, after heating it to a temperature corresponding to the boiling point at the associated operating pressure or up to 10.degree. higher is initially used as a heat exchange medium to regulate the evaporation rate of the charged absorption agent during the desorption of N.sub.2 and O.sub.2. The pure absorption agent is then used as a heat exchange medium to heat the cold absorption agent charged with Kr, N.sub.2 and O.sub.2 before the pure absorption agent is brought in contact with the gas mixture of N.sub.2, O.sub.2 and Kr entering the column.

REFERENCES:
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patent: 3762133 (1973-10-01), Merriman et al.
patent: 3785120 (1974-01-01), Merriman et al.
patent: 3850593 (1974-11-01), Beaujean et al.
patent: 3887339 (1975-06-01), Robertson
patent: 4129425 (1978-12-01), Stephenson et al.
patent: 4305735 (1981-12-01), Kanak et al.
patent: 4400183 (1983-08-01), Henrich et al.

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