Process for removing pollutants from combustion exhaust gases

Details Process for removing pollutants from combustion exhaust gases Process for removing pollutants from combustion exhaust gases

1993-03-01

1995-01-17

Langel, Wayne

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

42324407, B01J 824, C01B 2120

Patent

active

053824180

ABSTRACT:
At least one absorbent is added to the exhaust gas, which is passed at temperatures in the range from about 40.degree. to 500.degree. through a fluidized bed reactor and through dedusting means. Part of the solids separated in the dedusting means is recycled to the fluidized bed reactor. At least part of the recycled solids is blown with an entraining gas upwardly through a tube into the lower portion of the reactor. At least part of the combustion exhaust gas is fed to the reactor as a rising stream from a space which surrounds the tube. Air or combustion exhaust gas may be used, e.g., as an entraining gas.

REFERENCES:
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patent: 4539188 (1985-09-01), Hirsch et al.
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patent: 4810478 (1989-03-01), Graf
patent: 4975257 (1990-12-01), Lin
patent: 5158754 (1992-10-01), Lefers et al.

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