Regeneration of regenerable aqueous scrubbing solutions used for

Details Regeneration of regenerable aqueous scrubbing solutions used for Regeneration of regenerable aqueous scrubbing solutions used for

1975-12-24

1977-07-12

Wyse, Thomas G.

Gas separation

Means within gas stream for conducting concentrate to collector

55 48, 55 73, 423243, B01D 4700

Patent

active

040351661

ABSTRACT:
This invention relates to a process for the regeneration of regenerable aqueous scrubbing solutions which are used for the bulk removal of acidic gases, by absorption from gas mixtures containing these acidic gases, in a cyclic process in which said aqueous scrubbing solutions are regenerated in a regeneration system by steam stripping before being recycled to the absorption stage, a part of the scrubbing solutions being regenerated in a main regeneration section of the regeneration system, whereas the other part of the scrubbing solutions is regenerated in an auxiliary regeneration section of the regeneration system.
According to the invention, the pressure in the auxiliary regeneration section is selected independently from the pressure in the main regeneration section and at least a part of the stripping steam required in the auxiliary regeneration section is obtained through flashing of the scrubbing solution in a reduced pressure zone connected to the suction side of a steam-jet thermocompressor, the mixture of thermocompressor motive steam and recompressed flashed vapor being directly discharged into said auxiliary regeneration section.

REFERENCES:
patent: 2868327 (1959-01-01), Rotzler et al.
patent: 2886405 (1959-05-01), Benson et al.
patent: 3217466 (1965-11-01), Bogart
patent: 3236030 (1966-02-01), Tress
patent: 3553936 (1971-01-01), Little et al.
patent: 3563695 (1971-02-01), Benson
patent: 3563696 (1971-02-01), Benson
patent: 3773895 (1973-11-01), Thirkell
patent: 3823222 (1974-07-01), Benson

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