Method and composition for utilizing lime-urea hydrates to simul

Details Method and composition for utilizing lime-urea hydrates to simul Method and composition for utilizing lime-urea hydrates to simul

1986-01-09

1988-03-15

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423244, 423243, B01J 800, C01B 1700, C01B 2100

Patent

active

047312335

ABSTRACT:
Methods and compositions are provided for simultaneous reduction of NO.sub.x and SO.sub.x in combustion effluents and process gas streams, employing a sorbent material of calcium or dolomitic lime hydrated with aqueous carboxamides, optionally with carbinol reductants, in amounts sufficient to reduce the NO.sub.x and SO.sub.x concentrations from the effluents. The sorbent material may be introduced as dry powders or wet hydrates in effluent streams at temperatures ranging from 400.degree. to 2400.degree. F.

REFERENCES:
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4424197 (1984-01-01), Powell et al.
patent: 4442079 (1984-04-01), Donnelly et al.
patent: 4442080 (1984-04-01), Donnelly et al.
patent: 4526703 (1985-07-01), Gebhard et al.
patent: 4533532 (1985-08-01), Gebhard et al.

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