Method for removal of sulfur dioxide

Details Method for removal of sulfur dioxide Method for removal of sulfur dioxide

1998-01-13

2000-08-01

McAvoy, Ellen M.

Compositions

Co, s, negative element, or acid, bindant containing

Alkali-metal or alkali-metal compound containing

42324301, 42324308, B01D 5334

Patent

active

060962399

ABSTRACT:
A method for removing sulfur dioxide from gas streams, comprising contacting the gas stream with an aqueous absorption liquid, transferring the liquid to another location, then mildly heating the liquid to recover the sulfur dioxide. This method allows a removal of 99.9% of the sulfur dioxide, the recovery of very pure sulfur dioxide, is resistant to upsets due to variations in the gas stream, and is cost effective.

REFERENCES:
patent: 3987147 (1976-10-01), Guerrieri
patent: 4170628 (1979-10-01), Kosseim et al.
patent: 4948572 (1990-08-01), Egra
patent: 5202103 (1993-04-01), Chang et al.
patent: 5354545 (1994-10-01), Buisman
patent: 5693301 (1997-12-01), Ahman
patent: 5759505 (1998-06-01), Nolin et al.
patent: 5785888 (1998-07-01), Tsai et al.

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