Patent ID: 6808166
Filing Date: 2004-10-26
Classification: B01D,Y10S

Abstract:
A venturi scrubber for scrubbing a gas stream to remove undesired gaseous components, comprising:(a) a scrubber vessel having an external wall, an upper inlet for admitting said gas stream, and a collecting reservoir at the bottom of said vessel for collecting spent scrubbing liquid sprayed into the vessel; (b) an internal wall extending from the upper part of said external wall to define in said vessel an axial converging passage for receiving and converging the gas stream from said inlet, and an adjoined downwardly extending restricted venturi passage for receiving the downwardly flowing gas stream from said converging passage, said internal wall abounding said venturi passage terminating above the liquid level at said reservoir; and an annular space being thereby defined between said internal and external walls; (c) an outlet duct for the scrubbed gas stream intersecting said annular space at the upper part of said space; whereby said gas stream flowing downwardly through said converging passage and said venturi passage is turned about the bottom of said internal wall to enter said annular space and proceed therein upwardly and exit said vessel through said outlet duct; (d) spray means for spraying said scrubbing liquid into said gas stream for contacting said stream in at least said venturi passage; (e) an annular mist eliminator being mounted in said annular space at an axial point below (e) gas diverter means being mounted in said annular space below said mist eliminator to divert the gas stream which is turned upwardly into said annular space away from the external wall, said gas diverter means being an annular ring the transverse cross-section of which is adjacent to said external wall and which is tilted away from the wall and converses in the upward direction, whereby the upward flow through the entirety of said annular space above said diverter means to said mist eliminator is rendered more uniform; and said mist eliminator being axially spaced from said diverter means to receive said more uniform gas velocity.