Dry scrubber with condensing heat exchanger for cycle efficiency

Details Dry scrubber with condensing heat exchanger for cycle efficiency Dry scrubber with condensing heat exchanger for cycle efficiency

1993-08-10

1994-08-23

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110215, 110216, 110234, 42324301, 422168, F23J 1500

Patent

active

053397550

ABSTRACT:
A system for controlling sulfur dioxide (SO.sub.2) in a flue gas produced by a boiler comprises an air heater connected to the boiler for cooling the flue gas produced by the boiler. A dry scrubber is connected to the air heater and a slurry source for receiving the heated flue gas and a slurry in order to remove SO.sub.2 from the flue gas. A particulate collector is connected to the dry scrubber in order to collect particles from the flue gas. Heat is recovered from the flue gas by connecting a condensing heat exchanger to the particulate collector; and a condensate recycler is connected to the condensing heat exchanger and the slurry source for reducing the water requirements for the system.

REFERENCES:
patent: 4624190 (1986-11-01), Cappi
patent: 4726302 (1988-02-01), Hein et al.
patent: 5220875 (1993-06-01), Cox
patent: 5246680 (1993-09-01), Pikkujamsa

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