Exhaust gas treatment device, gas turbine combined cycle power generation system, gas engine power generation system and exhaust gas treatment method

Patent metadata

Field	Value
Publication number	US-2017312689-A1
Application number	US-201515533883-A
Country	US
Kind code	A1
Filing date	Sep 16, 2015
Priority date	Dec 11, 2014
Publication date	Nov 2, 2017
Grant date	—

Abstract

An exhaust gas treatment device capable of treating exhaust gas of a gas turbine or a gas engine includes an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site.

First claim

1 . An exhaust gas treatment device capable of treating exhaust gas, the exhaust gas treatment device comprising:
an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site, wherein the perovskite composite oxide has a composition expressed by a general expression Ag α Dy 1−α MnO 3 (0.01≦α≦0.20).

2 . The exhaust gas treatment device according to claim 1 , further comprising:
a heat exchanger capable of recovering heat from the exhaust gas.

3 . (canceled)

4 . The exhaust gas treatment device according to claim 1 , wherein the perovskite composite oxide has a composition expressed by a general expression Ag 0.12 Dy 0.88 MnO 3 .

5 . A gas turbine combined cycle power generation system, comprising:
a gas turbine; a steam turbine; at least one generator capable of generating electric power from power of the gas turbine and the steam turbine; and an exhaust gas treatment device capable of treating exhaust gas of the gas turbine, wherein the exhaust gas treatment device includes:
an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site; and
a heat exchanger disposed upstream of the exhaust gas treatment catalyst in a flow direction of the exhaust gas, the heat exchanger being capable of performing heat exchange between the exhaust gas and steam to be supplied to the steam turbine.

6 . A gas engine power generation system, comprising:
a gas engine; a generator capable of generating electric power from power of the gas engine; a turbocharger capable of compressing air to be supplied to the gas engine; and an exhaust gas treatment device capable of treating exhaust gas of the gas engine, wherein the exhaust gas treatment device includes an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site, and wherein the turbocharger includes an exhaust turbine disposed in an exhaust gas flow passage extending between the gas engine and the exhaust gas treatment device.

7 . A method of treating exhaust gas, comprising:
an exhaust gas treatment step of causing exhaust gas to make contact with an exhaust gas treatment catalyst comprising a perovskite composite oxide containing at least Ag and Dy in an A site and at least Mn in a B site, wherein the perovskite composite oxide has a composition expressed by a general expression Ag α Dy 1−α MnO 3 (0.01≦α≦0.20).

8 . The method of treating exhaust gas according to claim 7 , further comprising:
a heat exchange step of recovering heat of the exhaust gas by causing the exhaust gas to make contact with a heat exchanger, before the exhaust gas treatment step.

9 . The method of treating exhaust gas according to claim 7 , further comprising:
a supercharging step of rotating an exhaust turbine of a turbocharger with the exhaust gas, and compressing air with a compressor of the turbocharger, before the exhaust gas treatment step.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Katsuki Masatoshi
• Fujii Shuuji
• Nishizawa Kazuki

Classifications

• B01J23/68

  with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium · CPC title

• B01J37/08

  Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• F01N3/20

  specially adapted for catalytic conversion (F01N3/22 takes precedence) · CPC title

• B01J23/002

  Mixed oxides other than spinels, e.g. perovskite · CPC title

• B01J23/688

  with manganese, technetium or rhenium · CPC title