Method for treating an aerosol to remove suspended particles the

Details Method for treating an aerosol to remove suspended particles the Method for treating an aerosol to remove suspended particles the

1984-10-05

1987-10-13

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 10, 55 73, 55138, B03C 300

Patent

active

046996338

ABSTRACT:
This invention provides a method for treating an aerosol comprising electrostatically charged particles, suspended in a gas, to separate said particles from said gas, which comprises mixing said aerosol, in the absence of electrostatically charged water particles, with another aerosol including particles having the opposite charge to provide flocculated particles having a substantially neutral charge, and separating said flocculated particles from said gas.
The method of this invention is useful for treating an aerosol emission from a power plant or a smelter which emission generally comprises positively charged particles. The emission may be mixed with a negatively charged aerosol comprising particulate sulfur to neutralize said positively charged particles and thereby flocculate said particulate sulfur. The neutralized particles are passed into a liquid water phase to provide an aqueous solution and flocculated sulfur, which may be separated from said aqueous solution as an insoluble sulfur phase. The separated sulfur may be vaporized to provide a negatively charged aerosol and said negatively charged aerosol reutilized to treat power plant or smelter emissions.

REFERENCES:
patent: 4162144 (1979-07-01), Cheney
patent: 4169714 (1979-10-01), Calvert
patent: 4306885 (1981-12-01), Kober et al.
patent: 4325713 (1982-04-01), Rosenberg et al.
patent: 4368059 (1983-01-01), Doerges et al.
patent: 4475927 (1984-10-01), Loos

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