Regeneration process for spent SO.sub.2 -NO.sub.X sorbents

Details Regeneration process for spent SO.sub.2 -NO.sub.X sorbents Regeneration process for spent SO.sub.2 -NO.sub.X sorbents

1988-04-21

1989-05-09

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

55 73, 55 74, 423244, 423239, 502517, B01J 2034, B01D 5302

Patent

active

048290360

ABSTRACT:
A process is disclosed for regenerating spent MgO-vermiculite and MgO-perlite sorbents, where the sorbents have been employed beforehand to remove sulfur and nitrogen oxides from flue gases. The regeneration process consists of a series of heating and cooling steps performed in controlled atmospheres during which time sulfur oxides and elemental sulfur are recovered, nitrogen oxides are destroyed, and the sorbents are returned substantially to their original condition.

REFERENCES:
patent: 4011299 (1977-03-01), Henis et al.
patent: 4323544 (1982-04-01), Magder
patent: 4426365 (1984-01-01), Magder
patent: 4692318 (1987-09-01), Tolpin et al.
patent: 4721582 (1988-06-01), Nelson

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