Process and apparatus for the removal of mercury from sulfur dio

Details Process and apparatus for the removal of mercury from sulfur dio Process and apparatus for the removal of mercury from sulfur dio

1984-07-09

1986-04-01

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423210, 423106, 423544, C01B 1774, B01D 4700

Patent

active

045797269

ABSTRACT:
Mercury is removed from sulfuric acid-bearing hot and moist smelting-plant or roasting-plant gases by cooling and scrubbing the hot gases by means of a concentrated sulfuric acid mist in order to sulfatize the mercury and to separate it from the gases. The cooling is carried out by vaporizing so much water or dilute sulfuric acid solution from the gases that the temperature of the gas drops to below the dew point, in order to produce a sulfuric acid mist which sulfatizes and washes the mercury, the gases being separated from the mist and directed to the sulfuric acid plant. The process can be carried out by means of nozzles installed in the pipe which feeds hot and moist sulfuric acid-bearing gases into the scrubbing tower of the sulfuric acid plant, water or acid obtained from the scrubbing tower being fed through the nozzles into the feed pipe in the form of a finely-divided mist.

REFERENCES:
patent: 940595 (1909-11-01), Herreshoff
patent: 1627977 (1927-05-01), Krafft
patent: 3677696 (1972-07-01), Byrk et al.
patent: 3838190 (1974-09-01), Birke et al.
patent: 3954451 (1976-05-01), Kinoshita
patent: 3974254 (1976-08-01), Herkera et al.
patent: 4194889 (1980-03-01), Wanner
patent: 4208192 (1980-01-01), Quigley et al.
patent: 4273747 (1981-06-01), Rasmussen

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