Title:
METHOD OF TREATING GAS CONTAINING NITROGEN OXIDE
Document Type and Number:
WIPO Patent Application WO/2007/043216
Kind Code:
A1
Abstract:
A method of cutting down carbon monoxide and nitrogen oxides that is capable of
easy realization of low NOx lowering the emitted NOx value to below 5 ppm and simultaneously
realization of low CO. Further, there is provided a method of treating a gas containing
nitrogen oxides that is capable of not only realizations of ultralow NOx and low
CO but also realization of energy saving. There is provided a method of treating
a gas containing carbon monoxide, nitrogen oxides and oxygen and not containing
HC, characterized by including the steps of regulating the respective concentrations
of carbon monoxide, nitrogen oxides and oxygen in the gas so that these satisfy
the formula: ([NOx]+2[O2])/[CO] ≤ 2.0 (2) (in the formula (2), [CO],
[NOx] and [O2] respectively represent the concentration of carbon monoxide,
the concentration of nitrogen oxides and the concentration of oxygen, provided
that [O2]>0); and bringing the gas having the concentration ratios regulated
into contact with a catalyst capable of reducing of nitrogen oxides.
Inventors:
TANAKA OSAMU (JP)
TOKUNAGA YUKIHIRO (JP)
OKAMOTO YUSUKE (JP)
YASUI KENJI (JP)
TOKUNAGA YUKIHIRO (JP)
OKAMOTO YUSUKE (JP)
YASUI KENJI (JP)
Application Number:
PCT/JP2006/312381
Publication Date:
April 19, 2007
Filing Date:
June 21, 2006
Export Citation:
Assignee:
MIURA KOGYO KK (JP)
MIURA PROTEC LTD (JP)
TANAKA OSAMU (JP)
TOKUNAGA YUKIHIRO (JP)
OKAMOTO YUSUKE (JP)
YASUI KENJI (JP)
MIURA PROTEC LTD (JP)
TANAKA OSAMU (JP)
TOKUNAGA YUKIHIRO (JP)
OKAMOTO YUSUKE (JP)
YASUI KENJI (JP)
International Classes:
F23C13/00; B01D53/86; F23C99/00
Foreign References:
| JPH0538421A | 1993-02-19 | |||
| JPH06246159A | 1994-09-06 | |||
| JPH07313878A | 1995-12-05 |
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