Method of and apparatus for the removal of gaseous contaminants

Details Method of and apparatus for the removal of gaseous contaminants Method of and apparatus for the removal of gaseous contaminants

1990-07-24

1992-05-12

Niebling, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

4232405, B01D 5334, C01B 1760

Patent

active

051125889

ABSTRACT:
Gaseous contaminants, especially sulfur dioxide, sulfur trioxide, hydrogen chloride or hydrogen fluoride are removed from flue gases by chemisorption. A solid finely divided sorbent, before being brought into contact with the flue gas, is treated in a reactor with dry steam. The sorbent before introduction into the reactor is brought to a temperature of 10.degree. to 50.degree. C. below the dewpoint temperature of the steam in the reactor and the steam injected into the reactor is introduced at a temperature not more than 60.degree. C. above the dewpoint temperature, preferably 10.degree. to 40.degree. C. above the dewpoint temperature.

REFERENCES:
patent: 3862295 (1975-01-01), Tolles
patent: 4477426 (1984-10-01), Raskin
patent: 4604269 (1986-08-01), Yoon
patent: 4782772 (1988-11-01), Chughtai et al.
patent: 4795619 (1989-11-01), Lerner

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