Flue gas purification process

Details Flue gas purification process Flue gas purification process

1987-04-22

1989-10-10

Garvin, Patrick P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

210688, 423100, B01D 4705, B01D 4706

Patent

active

048730653

ABSTRACT:
Improved flue gas purification process features a heavy metal separating process, such as an anion exchange process, in which a scrubbing condensate is treated to remove at least the Hg contained therein prior to extracting the flue ash, which was previously separated and collected, with the scrubbing condensate to extract soluble heavy metals therefrom. A further heavy metal separating process, such as a cation exchange process, in which the scrubbing condensate after the extraction step is treated to remove at least one of Cd and Zn contained therein is also featured and may be performed after the extraction step or after solid/liquid separation of the flue ash and condensate from the extraction step.

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patent: 4261819 (1981-04-01), Winter
patent: 4305827 (1981-12-01), Sasaki
patent: 4332916 (1982-06-01), Thill
patent: 4617180 (1986-10-01), Vogg
patent: 4620492 (1986-11-01), Vogg et al.
patent: 4664810 (1987-05-01), Matejka et al.

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