Process for cleaning mercury-containing gaseous emissions

Details Process for cleaning mercury-containing gaseous emissions Process for cleaning mercury-containing gaseous emissions

1985-09-03

1988-03-08

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

110215, 423240, B01D 5334

Patent

active

047298820

ABSTRACT:
A process for cleaning gaseous emissions containing mercury (Hg) comprises the steps of adding a chlorine-containing material to the mercury-containing gaseous emissions and heating the mixture to convert the mercury into water-soluble mercuric chloride (HgCl.sub.2); scrubbing the water-soluble mercuric chloride with wash water and fixing the same as chlorocomplex ion (HgCl.sub.4.sup.-2) stable in liquid; and thereafter subjecting the washings from the scrubbing step to coagulating sedimentation and thereby fixing and insolubilizing the mercury in the resulting sludge.

REFERENCES:
patent: 1938585 (1933-12-01), Estabrooke
patent: 3054746 (1962-09-01), Gaden, Jr. et al.
patent: 3764496 (1973-10-01), Hultman et al.
patent: 3829558 (1974-08-01), Banks et al.
patent: 3838190 (1974-09-01), Birke et al.
A Comprehensive Treatise on Inorganic and Theoretical Chemistry, Mellor, Longmans, Green, and Co. 1946, vol. IV, p. 816.

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