Title:
DENITRATION DEVICE, WASTE HEAT RECOVERY BOILER PROVIDED WITH SAME, GAS TURBINE COMBINED CYCLE POWER PLANT, AND METHOD OF DENITRATION
Document Type and Number:
WIPO Patent Application WO/2019/159734
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable stable supply of diluting air to an ammonia injection device, to curb inflow of exhaust gas discharged from a gas turbine into the ammonia injection device, and to prevent obstruction of the ammonia injection device due to generation and deposition of ammonium carbonate in the ammonia injection device. The invention is provided with: a duct (22) for guiding and circulating exhaust gas from a turbine (52) of a gas turbine (50) having a compressor (52) and a turbine (56); an ammonia injection device (24) for dispersing a mixed gas of ammonia gas and diluting air inside the duct (22); and a denitration catalyst (26) that has been set up in the duct (22) downstream in the flow of exhaust gas of the ammonia injection device (24). There is provided an extraction line (76) that is connected to a low compression unit of the compressor (52) of the gas turbine (50), and that supplies, as diluting gas to the ammonia injection device (24), air that has been extracted from the compressor (52).
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Inventors:
HIROTA AKIRA (JP)
ISHIKAWA KANJI (JP)
ISHIKAWA KANJI (JP)
Application Number:
PCT/JP2019/003810
Publication Date:
August 22, 2019
Filing Date:
February 04, 2019
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01N3/08; B01D53/86; F02C7/00
Foreign References:
| JP2017015076A | 2017-01-19 | |||
| JPS6095926U | 1985-06-29 | |||
| JPS5297012A | 1977-08-15 | |||
| JP2014211102A | 2014-11-13 |
Attorney, Agent or Firm:
FUJITA, Takaharu (JP)
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