Patent ID: 6832754
Filing Date: 2004-12-21
Classification: B01D,B01J

Abstract:
A gas-liquid contact apparatus comprising:a vertically oriented containment vessel having a vertically aligned longitudinal axis; a main gas inlet means provided adjacent a lower vertical end of the containment vessel; a main gas outlet means provided adjacent an upper vertical end of the containment vessel; a main liquid outlet means provided adjacent a lower vertical end of the containment vessel; a counterflow gas-liquid contact space between the main gas inlet means and the main gas outlet means; main liquid feed means arranged above the counterflow gas-liquid space, said liquid feed means feeding liquid to an upper liquid reservoir having a bottom wall and a top wall for containing a predetermined depth of liquid and a headspace above the liquid therein; auxiliary, low pressure gas feed means arranged above the counterflow gas-liquid contact space, said auxiliary, low pressure gas feed means feeding gas into said headspace of said liquid reservoir; a plurality of first tubular conduits extending vertically between the bottom wall of the liquid reservoir and the headspace therein, thereby defining said predetermined depth of liquid; a plurality of second tubular conduits extending vertically between the bottom and top walls of the upper liquid reservoir, thereby forming gas outlet conduits from said counterflow gas-liquid contact space; and said plurality of first tubular conduits forming liquid feed spray nozzles wherein cocurrent downflow of said liquid within said reservoir and said auxiliary, low pressure gas provides a gas assist spray of liquid droplets into the counterflow gas-liquid contact space.