Claims
- 1. In a flue gas desulfurization apparatus having an agitation tank, an improved air sparge apparatus, comprising:
- a. a sparge air header, in communication with an air line, having a plurality of bores along the length of the header;
- b. a liquid line at an elevation approximately the same level as said sparge air header; and
- c. fluid communication means between said sparge air header and said liquid line such that liquid in said liquid line is directed into said sparge air header, whereby both liquid and air are simultaneously and continuously directed into said sparge air header to prevent backflow of solid material from the tank into the sparge air header.
- 2. The air sparge apparatus of claim 1, wherein said fluid communication means comprises a U-shaped trap.
- 3. The air sparge apparatus of claim 1, wherein said sparge air header comprises a manifold having a plurality of air sparge pipes in fluid communication therewith.
- 4. A method for using density control water to continuously flush the oxidation air header and sparge pipe in a flue gas wet scrubber agitation tank, comprising:
- a. providing a density control liquid line at approximately the same level as the oxidation air header and sparge pipe;
- b. providing fluid communication between said liquid line and the oxidation air header such that liquid in said liquid line is directed into the oxidation air header simultaneously and continuously with the air; and
- c. setting the pressure in the density control liquid line to be equal to or slightly less than the air pressure in the oxidation air header to allow the air pressure to drive the density control fluid through the sparge air header holes and prevent solid material in the tank from entering the header.
Parent Case Info
This application is a continuation of the U.S. application filed on Aug. 14, 1996 and assigned Ser. No. 08/702,425, and now U.S. Pat. No. 6,013,120.
US Referenced Citations (13)
Continuations (1)
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Number |
Date |
Country |
Parent |
702425 |
Aug 1996 |
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