Method and apparatus for reconcentrating liquid absorbent

Gas separation – Means within gas stream for conducting concentrate to collector

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55 38, 55 48, 55 51, 202181, 203 18, B01D 5314

Patent

active

044603835

ABSTRACT:
An improved method of and apparatus for reconcentrating a liquid absorbent in an absorption system which method includes the steps of heating the rich liquid absorbent in a heating zone to vaporize a portion of the solute therefrom, flashing the partially reconcentrated absorbent into a flash separator and separating the lean liquid absorbent from the flashed vapors in the flash separator with the lean liquid absorbent being recycled to the absorption system and with the separated vapors being cooled to condense liquids and returning the stream of condensed liquids and vapors to the heating zone. The improved apparatus includes a reboiler with a heating chamber, a surge chamber, means for flowing partially reconcentrated liquid absorbent from the heating chamber to the surge chamber, a flash separator, a valve controlling the flashing of liquid from the surge chamber to the flash separator, means for discharging separated liquids from said flash separator and a vacuum pump for returning the condensed liquids and vapors to the reboiler.

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