| US 7,601,317 B2 | ||
| Process for disposing waste gas comprising sulfur oxides and apparatus thereof | ||
| Keigo Orita, Tokyo (Japan); Sachio Maekawa, Tokyo (Japan); and Shinichi Kawabata, Tokyo (Japan) | ||
| Assigned to Hitachi Plant Technologies, Ltd., Tokyo (Japan) | ||
| Filed on Oct. 01, 2007, as Appl. No. 11/905,460. | ||
| Claims priority of application No. 2007-036468 (JP), filed on Feb. 16, 2007. | ||
| Prior Publication US 2008/0199378 A1, Aug. 21, 2008 | ||
| Int. Cl. B01D 53/50 (2006.01); B01D 53/74 (2006.01) | ||
| U.S. Cl. 423—243.01 [423/215.5; 423/DIG. 6; 422/105; 422/108; 422/111; 422/168] | 6 Claims |
| 1. A process for disposing waste gas containing sulfur oxides comprising
introducing the waste gas into a dry type electrostatic precipitator to remove dust;
introducing outside air to mix the outside air with the waste gas in a smoke channel; and then
introducing the waste gas mixed with outside air into a wet desulfurization apparatus to carry out desulfurization, wherein the outside air is introduced with a flow rate at which the temperature of the waste gas mixed with outside air is
at the dew point of acid.
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