Gas scrubber

Claim 2

Gas scrubbing apparatus comprising a housing having a gas inlet and a gas outlet; baffle means in said housing forming a passageway therethrough connecting the gas inlet and the gas outlet, said baffle means comprising fixed baffle means connected to said housing and at least one movable baffle spaced from said fixed baffle which defines with said fixed baffle means an adjustable throat portion of reduced cross-sectional area in said passageway; means for adjusting said movable baffle; spray means disposed in said throat portion in a plane substantially perpendicular to the direction of gas flow for producing a liquid spray across said throat portion transversing the direction of gas flow; a liquid-filled sump portion in said housing; and sump filter screen means dividing said sump portion into at lease a first sump section disposed beneath said gas inlet and said throat portion and a second sump section coupled to said spray means for supplying spray liquid thereto, whereby gas passing through said throat portion from the gas inlet to the gas outlet is increased in velocity and turbulence and scrubbed by the liquid spray and said sump filter screen means is operable to prevent particulates and other contaminants falling into said first sump section from entering said second sump section, to thereby prevent clogging of said spray means.

Claim 3

Gas scrubbing apparatus as claimed in claim 1 further comprising at least one gas filter basket disposed in said passageway adjacent said gas outlet for filtering the gas passing through said passageway, support means in said housing for slidably supporting said filter basket, and service door means in said housing adjacent said support means to permit removal of said filter basket from said housing.

Claim 4

Gas scrubbing apparatus as claimed in claim 2 wherein said gas filter basket comprises a hollow frame having one end thereof closed by a gas permeable end member, a cover member of gas permeable material removably disposed in the other end of said frame, gas filtering material disposed within said frame between said cover and end members, and means for securing said cover member to said frame at predetermined distances from said end member to permit adjustment of the thickness of the filter material in said basket.

Claim 5

Gas scrubbing apparatus comrising a housing having a gas inlet adjacent one end thereof, a gas outlet adjacent the other end thereof, and a liquid-filled sump portion at the bottom thereof; baffle means in the interior of said housing cooperating with the surface of the liquid in said sump portion to form a tortuous passageway connecting the gas inlet with the gas outlet, said baffle means comprising fixed baffle means connected to said housing and at least one movable baffle spaced from said fixed baffle which defines with said fixed baffle means an adjustable throat portion of reduced crOss-sectional area in said passageway; means for adjusting said moveable baffle; sump filter screen means dividing said sump portion into a first sump section disposed beneath said gas inlet and said throat portion and a second sump section disposed beneath said gas outlet, said sump filter screen means being operable to prevent particulates and other contaminants falling into said first sump section from entering said second sump section; spray means mounted on said baffle means in said throat portion in a plane substantially perpendicular to the direction of gas flow and coupled to said second sump section for producing a liquid spray across said throat portion transversing the direction of gas flow, whereby gas passing through said throat portion is increased in velocity and turbulence and scrubbed by the liquid spray; and at least one gas filter basket removably disposed in said passageway adjacent said gas outlet for filtering the gas passing therethrough.

Claim 6

Gas scrubbing apparatus comrising a housing having a gas inlet adjacent one end thereof, a gas outlet adjacent the other end thereof, and a liquid-filled sump portion at the bottom thereof; baffle means in the interior of said housing cooperating with the surface of the liquid in said sump portion to form a tortuous passageway connecting the gas inlet with the gas outlet, said baffle means comprising fixed baffle means connected to said housing and at least one movable baffle spaced from said fixed baffle which defines with said fixed baffle means an adjustable throat portion of reduced crOss-sectional area in said passageway; means for adjusting said moveable baffle; sump filter screen means dividing said sump portion into a first sump section disposed beneath said gas inlet and said throat portion and a second sump section disposed beneath said gas outlet, said sump filter screen means being operable to prevent particulates and other contaminants falling into said first sump section from entering said second sump section; spray means mounted on said baffle means in said throat portion in a plane substantially perpendicular to the direction of gas flow and coupled to said second sump section for producing a liquid spray across said throat portion transversing the direction of gas flow, whereby gas passing through said throat portion is increased in velocity and turbulence and scrubbed by the liquid spray; and at least one gas filter basket removably disposed in said passageway adjacent said gas outlet for filtering the gas passing therethrough.

Claim 7

Gas scrubbing apparatus as claimed in claim 4 wherein said fixed baffle means comprises a fixed baffle adjacent said gas inlet for directing the gas from said inlet toward the surface of the liquid in said first sump section to provide for inertial separation of the particulates and other contaminants in said gas.

Claim 8

Gas scrubbing apparatus as claimed in claim 5 wherein said movable baffle is disposed adjacent said fixed baffle and has the lower end thereof extending below the surface of the liquid in said first sump section, the space between said fixed and movable baffles forming the throat portion of said passageway, said movable baffle being movable in a direction substantially perpendicular to the direction of gas flow between said baffles.

Claim 9

Gas scrubbing apparatus as claimed in claim 6 wherein each of said movable and fixed baffles is substantially coplanar and the plane of the movable baffle is substantially parallel to the plane of the fixed baffle.

Claim 10

Gas scrubbing apparatus as claimed in claim 6 wherein said fixed baffle is substantially coplanar, and said movable baffle has two portions disposed above the surface of the liquid in said sump portion opposite said fixed baffle, each of said movable baffle portions being substantially coplanar and inclined at an acute angle with the plane of said fixed baffle, so that the cross-sectional area of the throat portion formed by said baffles decreases to a minimum at the apex of the two inclined portions of said movable baffle to provide a smooth transition from the larger cross-sectional area of the passageway to the smaller cross-sectional area of said throat portion.