Method of reducing polluting emissions from circulating fluidize

Details Method of reducing polluting emissions from circulating fluidize Method of reducing polluting emissions from circulating fluidize

1993-11-22

1994-09-13

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110215, 110216, 110245, 422168, 4232421, 42324308, F23J 1500

Patent

active

053458842

ABSTRACT:
The present invention concerns a method of reducing polluting emissions from a circulating fluidized bed combustion installation including a furnace from which the dust is recovered at least in part by a cyclone, the partially dedusted gases output by the cyclone passing through a recovery boiler, and then into a dust filter, in which method a desulfurizing agent is inserted into the furnace. According to the invention, downstream from said recovery boiler, and upstream from said dust filter, the flue gases are desulfurized in semi-humid manner in a reaction enclosure provided with a water injection inlet. Downstream from said dust filter, the resulting desulfurization products are thermally oxidized.

REFERENCES:
patent: 4312280 (1982-01-01), Shearer et al.
patent: 4600568 (1986-07-01), Yoon et al.
patent: 4861568 (1989-08-01), Robinson, Jr.
patent: 4917024 (1990-04-01), Marten et al.
patent: 5171552 (1992-12-01), Miura et al.
patent: 5178101 (1993-01-01), Bell
patent: 5282430 (1994-01-01), Nehls, Jr.

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