Method and means for controlling mist scrubber operation

Details Method and means for controlling mist scrubber operation Method and means for controlling mist scrubber operation

1987-11-12

1989-07-04

Stoll, Robert L.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423224, 423235, 423236, 423242, 423240, 4232451, 422168, B01D 4706, C01B 1756, C01B 1760, C01B 1716

Patent

active

048448745

ABSTRACT:
A control system is provided for a mist scrubbing process in which a gas containing odorous and acidic contaminants is cocurrently contacted in a reaction chamber with tiny droplets of an aqueous reagent to react with and destroy the contaminants. The reagent contains an oxidizing agent and a base and the process is controlled by measuring a property, typically pH, of spent spray liquid settling at the bottom of the chamber. That measurement is used to meter the flow rate of base into the system while at the same time the concentration of an acidic contaminant in the scrubbed gas stream leaving the reaction chamber is measured and that measurement is used to meter the injection rate of an oxidizing agent into the system.

REFERENCES:
patent: 4208383 (1980-06-01), Kisters et al.
patent: 4238461 (1980-02-01), Devries
patent: 4307067 (1981-12-01), Togawa et al.
Perry et al., "Perry's Chemical Engineers' Handbook", 6th Ed., 18-3, 18-41 to 42 (McGraw-Hill Book Company).

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