Gas scrubbing system

Claim 2

A gas cleaning apparatus comprising a gas scrubber having a gas inlet and a gas outlet, a gas inlet supply means for conveying gases to said gas inlet, said gas inlet supply means including a gas scrubber inlet conduit configured to define a gas flow path which extends downwardly to a bend and horizontally from said bend, and which is formed entirely of completely flat internal surfaces and means for evenly distributing a continuous flow of liquid down over said surfaces, said last-mentioned means comprising trough means about the periphery of said conduit at its upper end, a plurality of flat weir plates, securing means arranged to secure said weir plates to each of different surfaces of said conduit to extend beyond said surfaces at said one end of said conduit to form inside walls of said trough means, means for adjusting the position of said weir plates with respect to said surfaces and said gas inlet supply means further including an entrance duct, a flange-like baffle member extending downwardly from said entrance direct into said trough means.

Claim 3

A gas cleaning apparatus as in claim 1, wherein said means for evenly distributing a continuous flow of liquid includes supplementary water spray nozzles arranged to direct a spray of water along the lower internal surfaces of said bend.

Claim 4

A gas cleaning apparatus as in claim 1, wherein one end of said gas inlet conduit extends in a vertical direction and surrounds an entrance duct, said gas inlet conduit between said one end and said change in direction being tapered inwardly in a downward direction and being provided with water spray nozzles along its taper.

Claim 5

A gas cleaning apparatus according to claim 1, wherein said flat internal surfaces include a slanted bend wall extending between and arranged at an angle with respect to each of two walls defining the directions of said path on opposite sides of said bend.

Claim 6

A gas cleaning apparatus as in claim 1, wherein said gas inlet supply means includes a tapered transition member having a large inlet cross-section for receiving gases to be cleaned and a small outlet cross-section coupled to said gas conduit.

Claim 7

A gas cleaning apparatus as in claim 5, wherein said gas inlet supply means includes means defining a water trough about the inlet of said tapered transiTion member and means for controlling overflow of water from said trough down over the interior surfaces of said tapered transition member.

Claim 8

A gas cleaning apparatus as in claim 1, wherein said gas inlet supply means includes an entrance seal comprising means defining an inlet opening and means forming a water trough about said inlet opening, an entrance duct extending into said inlet opening and a flange baffle plate member secured to said entrance duct and into said water trough.

Claim 9

A gas scrubbing system comprising a cylindrically shaped cyclone-type gas scrubber, a gas inlet conduit extending tangentially into the side of said gas scrubber, a gas outlet conduit, extending from said gas scrubber at a location axially displaced from said gas inlet conduit, baffle means located within said gas scrubber and including a first disc-shaped member and a second annular-shaped member, said disc-shaped member being positioned closer to said gas outlet conduit than said annular-shaped member, a gas inlet supply means for conveying gases to said gas inlet conduit, said supply means comprising an upper vertical gas inlet portion, a lower horizontal portion and an intermediate elbow portion providing a sharp angled bend between said vertical and horizontal portions, said vertical gas inlet portion being tapered and provided with flat internal surfaces, means for causing a continuous film of liquid to flow down over said internal surfaces, liquid spray means arranged to direct liquid sprays into said tapered vertical portion, and adjustable spin-damper means arranged inside said horizontal portion to control gas flow into said scrubber, said spin-damper means having means for providing clearance between said spin-damper means and the inner surfaces of said horizontal portions in all positions of said spin-damper means, thereby to permit liquid to flow by said spin-damper means at all positions thereof.

Claim 10

A gas scrubbing system comprising a cylindrically shaped cyclone-type gas scrubber, a gas inlet conduit extending tangentially into the side of said gas scrubber, a gas outlet conduit, extending from said gas scrubber at a location axially displaced from said gas inlet conduit, baffle means located within said gas scrubber and including a first disc-shaped member and a second annular-shaped member, said disc-shaped member being positioned closer to said gas outlet conduit than said annular-shaped member, a gas inlet supply means for conveying gases to said gas inlet conduit, said supply means comprising an upper vertical gas inlet portion, a lower horizontal portion and an intermediate elbow portion providing a sharp angled bend between said vertical and horizontal portions, said vertical gas inlet portion being tapered and provided with flat internal surfaces, means for causing a continuous film of liquid to flow down over said internal surfaces, liquid spray means arranged to direct liquid sprays into said tapered vertical portion, and adjustable spin-damper means arranged inside said horizontal portion to control gas flow into said scrubber, said spin-damper means having means for providing clearance between said spin-damper means and the inner surfaces of said horizontal portions in all positions of said spin-damper means, thereby to permit liquid to flow by said spin-damper means at all positions thereof.