Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1995-05-02
1996-12-24
Lewis, Michael
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423235, 42324401, C10B 2100
Patent
active
055871364
ABSTRACT:
The present invention provides a desulfurization and denitrification process by dry process, whereby a stable operation is rendered possible at a temperature of 100.degree. to 200.degree. C. with a high energy efficiency and without deterioration of a catalyst for a long time and any problem on by produced N.sub.2 O. This process comprises treating a waste gas containing SOx and NOx with catalyst-poisoning materials in an apparatus for mainly effecting desulfurization and then in an apparatus for mainly effecting denitrification, characterized by passing the waste gas through a desulfurization apparatus of moving bed type, in which a carbonaceous adsorbent is moved downward at a temperature of 100.degree. to 200.degree. C., adding ammonia to the waste gas at a temperature of 100.degree. to 200.degree. C., leaving the desulfurization apparatus, and then passing the waste gas through the low temperature denitrification apparatus, in which a catalyst of TiO.sub.2 -V.sub.2 O.sub.5 type comprising vanadium oxide supported on titanium oxide of anatase type, having a specific surface area of 100 to 250 m.sup.2 /g and micropores of 1.5 to 2.5 nm in pore diameter and 7.5 to 8.5 nm in pore diameter respectively in an amount of at least 0.05 cc/g, is filled, at a temperature of 100.degree. to 200.degree. C., thus effecting the denitrification.
REFERENCES:
patent: 4113660 (1978-09-01), Abe et al.
patent: 4915921 (1990-04-01), Richter et al.
patent: 4916107 (1990-04-01), Brand et al.
patent: 4940567 (1990-07-01), Ohlmeyer et al.
patent: 5045516 (1991-09-01), Vogel et al.
patent: 5053210 (1991-10-01), Buxel et al.
patent: 5124303 (1992-06-01), Kobayashi et al.
patent: 5294584 (1994-03-01), Yoshida et al.
Ikeyama Nobuhide
Iwanaga Yutaka
Harding Amy M.
Lewis Michael
Mitsui Mining Co. Ltd.
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