Title:
COMBUSTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/161874
Kind Code:
A1
Abstract:
Provided is a combustion system that is capable of removing nitrogen oxides exceeding a regulation value while keeping the amount of ammonia slip level at or below a prescribed value, even when a denitration catalyst used in a denitration apparatus degrades. A combustion system 1 comprises: a first denitration apparatus 30 for removing nitrogen oxides from exhaust gas expelled from a boiler 10; and a second denitration apparatus 70, positioned downstream of an air preheater 40, for removing nitrogen oxides from exhaust gas expelled from the air preheater 40. The first denitration apparatus 30 controls ammonia dosage on the basis of the amount of ammonia slip. The second denitration apparatus 70 controls ammonia dosage on the basis of outlet nitrogen oxide concentration.
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Inventors:
KIYONAGA EIJI (JP)
YOSHIDA KAZUHIRO (JP)
MORITA KEIICHIRO (JP)
MURAYAMA TORU (JP)
HARUTA MASATAKE (JP)
INOMATA YUSUKE (JP)
YOSHIDA KAZUHIRO (JP)
MORITA KEIICHIRO (JP)
MURAYAMA TORU (JP)
HARUTA MASATAKE (JP)
INOMATA YUSUKE (JP)
Application Number:
PCT/JP2019/004518
Publication Date:
August 13, 2020
Filing Date:
February 07, 2019
Export Citation:
Assignee:
CHUGOKU ELECTRIC POWER (JP)
UNIV TOKYO METROPOLITAN (JP)
UNIV TOKYO METROPOLITAN (JP)
International Classes:
F23J15/00; B01D53/86; B01D53/90; B01J23/22
Domestic Patent References:
| WO2018047377A1 | 2018-03-15 | |||
| WO2018047380A1 | 2018-03-15 |
Foreign References:
| JP2017006813A | 2017-01-12 | |||
| JPH10235155A | 1998-09-08 | |||
| JPH0975674A | 1997-03-25 | |||
| JP2003290630A | 2003-10-14 | |||
| JP2012192345A | 2012-10-11 | |||
| JP2003340282A | 2003-12-02 | |||
| JP2017032214A | 2017-02-09 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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