Invention Grant
- Patent Title: Method for regenerating exhaust gas treatment catalyst
- Patent Title (中): 再生废气处理催化剂的方法
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Application No.: US14347775Application Date: 2011-11-17
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Publication No.: US09249706B2Publication Date: 2016-02-02
- Inventor: Masanao Yonemura , Katsumi Nochi , Masashi Kiyosawa , Masanori Demoto , Kyohei Takakura
- Applicant: Masanao Yonemura , Katsumi Nochi , Masashi Kiyosawa , Masanori Demoto , Kyohei Takakura
- Applicant Address: JP Yokohama
- Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
- Current Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
- Current Assignee Address: JP Yokohama
- Agency: Wenderoth, Lind & Ponack L.L.P.
- International Application: PCT/JP2011/076500 WO 20111117
- International Announcement: WO2013/073032 WO 20130523
- Main IPC: B01J38/60
- IPC: B01J38/60 ; F01N3/18 ; B01D53/96 ; B01J27/232 ; B01D53/86 ; B01J38/48 ; B01J27/053 ; B01J27/30 ; B01J37/02 ; B01J35/00
Abstract:
Provided is an exhaust gas treatment catalyst including: a de-NOx catalyst; and a coating layer being provided on a surface of the de-NOx catalyst and containing at least one selected from the group consisting of alkali metal carbonates and alkaline earth metal carbonates.In a method for regenerating an exhaust gas treatment catalyst of the present invention, the coating layer of the de-NOx catalyst on which VOSO4 is deposited is removed with an acid, and after the removal of the coating layer, a coating layer containing at least one selected from the group consisting of alkali metal carbonates and alkaline earth metal carbonates is again provided.
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