US 7,560,084 B2
Method and device for separation of sulphur dioxide from a gas
Dennis J. Laslo, Knoxville, Tenn. (US); Michael Chiang, Knoxville, Tenn. (US); David J. Muraskin, Knoxville, Tenn. (US); Michael J. Rini, Knoxville, Tenn. (US); and Michael G. Varner, Knoxville, Tenn. (US)
Assigned to Alstom Technology Ltd, Baden (Switzerland)
Filed on Mar. 30, 2007, as Appl. No. 11/694,063.
Prior Publication US 2008/0241036 A1, Oct. 02, 2008
Int. Cl. B01D 53/50 (2006.01); B01D 53/74 (2006.01); B01D 53/78 (2006.01)
U.S. Cl. 423—242.1  [423/243.01; 423/DIG. 5; 422/110; 422/111; 422/168; 422/169; 422/170] 29 Claims
OG exemplary drawing
 
1. A system for separating sulfur dioxide from a gas using an aqueous absorption liquid, comprising:
a housing including an inlet adapted to receive the gas containing sulfur dioxide and an outlet adapted to expel the gas, from which sulfur dioxide has been separated;
a substantially horizontal apertured plate positioned between said inlet and said outlet, said apertured plate including a lower side, an upper side, and a plurality of apertures fluidly connecting said lower and upper sides, said apertured plate being arranged to allow the gas containing sulfur dioxide to pass through said plurality of apertures from said lower side to said upper side and to support on said upper side a flowing layer of the absorption liquid;
at least one outlet box for collecting the absorption liquid flowing over said apertured plate, said at least one outlet box including at least one aperture;
at least one distribution mechanism fluidly connected with said at least one aperture of said at least one outlet box, said at least one distribution mechanism being arranged so that the absorption liquid in said at least one outlet box contacts the gas from said inlet before the gas passes through said plurality of apertures in said apertured plate;
a container for containing the absorption liquid, said container fluidly connected with said housing; and
a pump and conduit for drawing the absorption liquid from said container through said pump and through said conduit to said upper side of said apertured plate and along and over said apertured plate.