公开(公告)号：US10385750B2

公开(公告)日：2019-08-20

申请号：US15764234

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： B01J23/22 ,  B01J23/92 ,  B01J35/10 ,  B01J37/00 ,  B01J37/08 ,  B01J38/02 ,  B01J38/48 ,  B01J38/64 ,  B01J38/66 ,  F01N3/28 ,  B01D53/90 ,  B01D53/86 ,  B01D53/94 ,  F01N3/20 ,  B01D53/96 ,  F01N3/021 ,  F01N3/02 ,  F01N13/00 ,  B01J37/02

摘要： There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst molded in a block shape contains 43 wt % or more of vanadium pentoxide. The denitration catalyst has a BET specific surface area of 30 m2/g or more and is used for denitration at 200° C. or lower.

公开(公告)号：US10746073B2

公开(公告)日：2020-08-18

申请号：US15764077

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： F01N3/28 ,  F01N13/00 ,  F01N3/02 ,  F01N3/021 ,  B01J35/00 ,  B01J37/03 ,  B01J23/22 ,  B01D53/90 ,  B01D53/86 ,  B01D53/94 ,  F01N5/02 ,  B01J35/10 ,  B01J37/08 ,  F01N3/20 ,  B01D53/96 ,  B01J23/92 ,  B01J38/64 ,  B01J38/66 ,  B01J38/02 ,  B01J38/48 ,  B01J37/00 ,  B01J37/02

摘要： There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst is obtained by coating a substrate with a catalyst component. The catalyst component contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more. The denitration catalyst is used for denitration at 200° C. or lower.

公开(公告)号：US10746074B2

公开(公告)日：2020-08-18

申请号：US15764209

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Toshikazu Yoshikawa ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： F01N3/28 ,  F01N13/00 ,  F01N3/02 ,  F01N3/021 ,  B01J35/00 ,  B01J37/03 ,  B01J23/22 ,  B01D53/90 ,  B01D53/86 ,  B01D53/94 ,  F01N5/02 ,  B01J35/10 ,  B01J37/08 ,  F01N3/20 ,  B01D53/96 ,  B01J23/92 ,  B01J38/64 ,  B01J38/66 ,  B01J38/02 ,  B01J38/48 ,  B01J37/00 ,  B01J37/02

摘要： There is provided a method for recycling a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A method for recycling a denitration catalyst includes a step of removing a used denitration catalyst from a denitration device and then coating the used denitration catalyst with a catalyst component. The catalyst component contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more, and the denitration catalyst after recycling is used for denitration at 200° C. or lower.

公开(公告)号：US10519837B2

公开(公告)日：2019-12-31

申请号：US15764233

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： F01N3/28 ,  B01J23/22 ,  B01D53/90 ,  B01D53/86 ,  B01D53/94 ,  F01N5/02 ,  B01J35/10 ,  B01J37/08 ,  F01N3/20 ,  B01D53/96 ,  B01J23/92 ,  B01J38/64 ,  B01J38/66 ,  B01J38/02 ,  B01J38/48 ,  B01J37/00 ,  F01N3/021 ,  F01N3/02 ,  F01N13/00 ,  B01J37/02 ,  B01J37/03 ,  B01J35/00

摘要： A combustion system operated at low cost is provided. A combustion system 1 includes a combustion device 10 that burns fuel, an exhaust line L1 through which exhaust gas flows, the exhaust gas being generated through combustion of the fuel in the combustion device 10, a dust collector 50 that is disposed in the exhaust line L1 and that collects dust in the exhaust gas, and a denitration device 90 that is disposed in the exhaust line L1 and that removes nitrogen oxide from the exhaust gas using a denitration catalyst. The denitration device 90 is disposed downstream from the dust collector 50 in the exhaust line L1. The denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more.

公开(公告)号：US10767535B2

公开(公告)日：2020-09-08

申请号：US15764200

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Toshikazu Yoshikawa ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： F01N3/28 ,  B01D53/86 ,  B01D53/90 ,  B01D53/94 ,  B01D53/96 ,  B01J23/22 ,  B01J23/92 ,  B01J35/00 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  B01J38/02 ,  B01J38/48 ,  B01J38/64 ,  B01J38/66 ,  F01N3/021 ,  F01N3/02 ,  F01N3/20 ,  F01N5/02 ,  F01N13/00

摘要： There is provided a method for recycling a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A method for recycling a denitration catalyst includes a step of spraying an aqueous solution with a pH of 7 or more onto a used denitration catalyst while the denitration catalyst is set in a denitration device to remove a surface of the denitration catalyst. The denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more. The denitration catalyst after recycling is used for denitration at 200° C. or lower.

公开(公告)号：US10550747B2

公开(公告)日：2020-02-04

申请号：US15764222

申请日：2017-03-07

申请人： The Chugoku Electric Power Co., Inc. ,  Tokyo Metropolitan University

发明人： Eiji Kiyonaga ,  Kenji Hikino ,  Keiichiro Morita ,  Akihiro Nakamura ,  Masatake Haruta ,  Toru Murayama ,  Makoto Mino

IPC分类号： F01N3/28 ,  B01D53/90 ,  B01D53/94 ,  B01D53/96 ,  B01J23/22 ,  B01J23/92 ,  B01J35/00 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  B01J38/02 ,  B01J38/48 ,  B01J38/64 ,  B01J38/66 ,  F01N3/021 ,  F01N3/02 ,  F01N3/20 ,  F01N13/00 ,  B01D53/86

摘要： A combustion system for ships operated at low cost is provided. A combustion system 1 for ships includes an internal combustion engine 20 that burns fuel, an exhaust line L2 through which exhaust gas flows, the exhaust gas being generated through combustion of the fuel in the internal combustion engine 20, an exhaust heat recovery device 40 that is disposed in the exhaust line L2 and that recovers exhaust heat from the exhaust gas discharged from the internal combustion engine 20, and a denitration device 50 that is disposed in the exhaust line L2 and that removes nitrogen oxide from the exhaust gas using a denitration catalyst. The denitration device 50 is disposed downstream from the exhaust heat recovery device 40 in the exhaust line L2. The denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more.

公开(公告)号：US11434803B2

公开(公告)日：2022-09-06

申请号：US17436950

申请日：2019-03-07

申请人： THE CHUGOKU ELECTRIC POWER CO., INC. ,  TOKYO METROPOLITAN PUBLIC UNIVERSITY CORPORATION

发明人： Eiji Kiyonaga ,  Kazuhiro Yoshida ,  Keiichiro Morita ,  Toru Murayama ,  Masatake Haruta ,  Shinichi Hata ,  Yusuke Inomata

IPC分类号： F01N3/28 ,  B01J23/22 ,  F23J15/02 ,  F22B1/18 ,  F01N5/04

摘要： Provided is a combustion system using a catalyst having better denitration efficiency at low temperatures, during a selective catalytic reduction reaction in which ammonia is used as a reducing agent.
This combustion system comprises: a combustion device that combusts fuel; an exhaust path through which flows exhaust gas generated from the combustion of fuel in the combustion device; a dust collection device that is arranged on the exhaust path and collects soot/dust in the exhaust gas; and a denitration device that is arranged on the exhaust path and removes nitrogen oxides from the exhaust gas by means of a denitration catalyst, wherein the denitration device is arranged downstream of the dust collection device on the exhaust path, and the denitration catalyst contains vanadium oxide, has a carbon content of 0.05 wt % or more, and has a defect site in which oxygen deficiency occurs in a crystal structure.

公开(公告)号：US11560819B2

公开(公告)日：2023-01-24

申请号：US17436940

申请日：2019-03-07

申请人： THE CHUGOKU ELECTRIC POWER CO., INC. ,  TOKYO METROPOLITAN PUBLIC UNIVERSITY CORPORATION

发明人： Eiji Kiyonaga ,  Kazuhiro Yoshida ,  Keiichiro Morita ,  Toru Murayama ,  Masatake Haruta ,  Shinichi Hata ,  Yusuke Inomata

IPC分类号： F01N3/20 ,  F01N5/02 ,  B01J23/22 ,  F01N3/035

摘要： Provided is a combustion system using a catalyst having better denitration efficiency at low temperatures, during a selective catalytic reduction reaction in which ammonia is used as a reducing agent.
This combustion system comprises: a combustion device that combusts fuel; an exhaust path through which flows exhaust gas generated from the combustion of fuel in the combustion device; a dust collection device that is arranged on the exhaust path and collects ash dust/dust in the exhaust gas; and a denitration device that is arranged on the exhaust path and removes nitrogen oxides from the exhaust gas by means of a denitration catalyst, wherein the denitration device is arranged downstream of the dust collection device on the exhaust path, and the denitration catalyst contains vanadium oxide including vanadium pentoxide and has a defect site in which an oxygen atom is deficient in a crystal structure of the vanadium pentoxide.