Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1986-01-23
1987-09-29
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423240, C01B 1700
Patent
active
046968059
ABSTRACT:
Here are disclosed a method for desulfurizing an exhaust gas which is characterized by comprising a gas absorbing section in which an absorbing solution absorbs SO.sub.2 in the exhaust gas in order to become an acid solution containing a sulfite; an oxidizing section in which the sulfite is oxidized; a neutralizing section in which the absorbing solution is neutralized by adding an SO.sub.2 absorbent; and a closed circulating circuit for delivering the solution drawn out from the gas absorbing section to the oxidizing section, delivering the solution drawn out from the oxidizing section to the neutralizing section, and delivering the solution drawn out from the neutralizing section to the gas absorbing section; and a method for simultaneously treating SO.sub.2 and HCl which the abovementioned exhaust gas contains.
REFERENCES:
patent: 3904742 (1975-09-01), Akimoto
patent: 3985860 (1976-10-01), Mandelek et al.
patent: 4328195 (1982-05-01), Mori et al.
patent: 4539190 (1985-09-01), Shinoda et al.
Okino Susumu
Onizuka Masakazu
Shimizu Taku
Shinoda Naoharu
Tatani Atsushi
Heller Gregory A.
Mitsubishi Jukogyo Kabushiki Kaisha
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