Flue gas treating system

Details Flue gas treating system Flue gas treating system

1995-11-29

1998-06-23

Bhat, Nina

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Control element responds proportionally to a variable signal...

422172, 422173, 55228, B01D 4700, G05D 700

Patent

active

057701610

ABSTRACT:
A flue gas treating system including a gas-gas heater and/or a dust collector, and a wet flue gas desulfurization apparatus, characterized in that the flue gas treating system is equipped with addition means for adding an alkaline agent to an absorbent slurry, a pH detector for detecting the pH of the slurry, gas-gas heater operational state detection means, dust collector operational state detection means, and alkaline agent addition control means for controlling the amount of alkaline agent added in response to signals from the pH detector, the gas-gas heater operational state detection means and the dust collector operational state detection means, so that the pH and calcium compound concentration of the absorbent slurry can be controlled.

REFERENCES:
patent: 3899294 (1975-08-01), Magiros
patent: 4094959 (1978-06-01), Ball et al.
patent: 4100266 (1978-07-01), Smith
patent: 4322392 (1982-03-01), Gleason et al.
patent: 4431618 (1984-02-01), Boward, Jr. et al.
patent: 4687649 (1987-08-01), Kuroda et al.
patent: 4755366 (1988-07-01), Schwartzbach

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