Sulfur dioxide removal from gas streams using hydroxyalkyl subst

Details Sulfur dioxide removal from gas streams using hydroxyalkyl subst Sulfur dioxide removal from gas streams using hydroxyalkyl subst

1987-08-13

1988-11-08

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

55 73, C01B 1700, B01D 1900

Patent

active

047833270

ABSTRACT:
A method of removing SO.sub.2 from a gas stream containing the same by absorbing the SO.sub.2 in an aqueous solution containing a 4-(2-hydroxyalkyl)-2-piperazinone compound or an alkyl or aryl substituted derivative thereof. These compounds provide an absorbent solution which is less subject to loss during the regeneration step and yet effectively remove the SO.sub.2 from the gas stream without interference from other associated gases.

REFERENCES:
patent: 4112049 (1978-09-01), Bozzelli et al.
patent: 4366134 (1982-12-01), Koroay et al.
patent: 4465614 (1984-08-01), Trentham et al.
patent: 4469663 (1984-09-01), Crump et al.
patent: 4530704 (1985-07-01), Jones

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