Abstract
In the design of the Crown Simpson bleached kraft mill at Fairhaven, California, the latest technological developments in odor and dust control were used to design a system capable of removing in excess of 90% of the malodorous sulfur emission and more than 98%of the dust load. The odor control system consists of high-efficiency black liquor oxidation, noncondensible gas burning, and stripping of “foul” condensate followed by burning of the off-gases. The dust control system on the recovery furnace consists of a high-efficiency electrostatic precipitator followed by wet scrubbers. The lime kiln gases are scrubbed in a Venturi scrubber and the smelt dissolver stack is equipped with demister pads. The gases from the lime kiln, power boiler, recovery furnace, and black liquor oxidizer are combined and discharged through a 310-ft stack. A complete emission inventory has been conducted and the volume, composition, and quantity of materials discharged are presented.
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