Method of removing sulphur oxides from flue gases

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component

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C01B 1700, B01J 800

Patent

active

050342053

ABSTRACT:
A method of removing sulphur oxides from flue gases, in which method lime such as calcium carbonate is fed into a separate reactor space positioned in a boiler. In the reactor space the lime is converted into calcium oxide and carbon dioxide under the influence of the temperature prevailing in the furnace of the boiler. Pressurized air causes the calcinating lime and the obtained calcium oxide to flow through the tubular space, whereby at the other end of the space substantially all lime has been converted into oxide and is fed therefrom into the boiler among its flow of flue gases for the actual desulphuration reaction.

REFERENCES:
patent: 2718453 (1955-09-01), Beckman
patent: 4277450 (1981-07-01), Dilworth
patent: 4309393 (1982-01-01), Nguyen
patent: 4788047 (1988-11-01), Hamala et al.
patent: 4867955 (1989-09-01), Johnson

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