JPS5778949A - Regeneration of poisoned catalyst for removing nitrogen oxide - Google Patents

Regeneration of poisoned catalyst for removing nitrogen oxide

Info

Publication number
JPS5778949A
JPS5778949A JP55154581A JP15458180A JPS5778949A JP S5778949 A JPS5778949 A JP S5778949A JP 55154581 A JP55154581 A JP 55154581A JP 15458180 A JP15458180 A JP 15458180A JP S5778949 A JPS5778949 A JP S5778949A
Authority
JP
Japan
Prior art keywords
catalyst
poisoned
carrier
nitrogen oxide
supported
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP55154581A
Other languages
Japanese (ja)
Other versions
JPS6345252B2 (en
Inventor
Hideyuki Masaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP55154581A priority Critical patent/JPS5778949A/en
Publication of JPS5778949A publication Critical patent/JPS5778949A/en
Publication of JPS6345252B2 publication Critical patent/JPS6345252B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: To regenerate catalytic activity by simple treating operation by a method wherein a poisoned catalyst with a honeycomb structure of which catalytic activity is lowered is subjected to heat treatment at a specific temp. for a definite time or more and, thereafter, a catalyst substance is supported on the resultant carrier.
CONSTITUTION: A poisoned catalyst of which catalytic activity is lowered by using a catalyst for removing nitrogen oxide comprising a honeycomb structure for a long time is subjected to heat treatment in a temp. range of 1,150W1,450°C for 10min or more and, thereafter, a catalyst substance such as titanium, tungsten or the like is supported on the resultant carrier. As described above, by simple treating operation, the poisoned catalyst is recovered as a catalyst carrier and the catalyst substance is supported on said recovered carrier to regenerated said poisoned catalyst to a catalyst having high denitrating characteristics.
COPYRIGHT: (C)1982,JPO&Japio
JP55154581A 1980-11-05 1980-11-05 Regeneration of poisoned catalyst for removing nitrogen oxide Granted JPS5778949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154581A JPS5778949A (en) 1980-11-05 1980-11-05 Regeneration of poisoned catalyst for removing nitrogen oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154581A JPS5778949A (en) 1980-11-05 1980-11-05 Regeneration of poisoned catalyst for removing nitrogen oxide

Publications (2)

Publication Number Publication Date
JPS5778949A true JPS5778949A (en) 1982-05-17
JPS6345252B2 JPS6345252B2 (en) 1988-09-08

Family

ID=15587333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154581A Granted JPS5778949A (en) 1980-11-05 1980-11-05 Regeneration of poisoned catalyst for removing nitrogen oxide

Country Status (1)

Country Link
JP (1) JPS5778949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0815924A1 (en) * 1996-06-25 1998-01-07 Mitsubishi Heavy Industries, Ltd. Nitrogen oxide removal catalyst

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0815924A1 (en) * 1996-06-25 1998-01-07 Mitsubishi Heavy Industries, Ltd. Nitrogen oxide removal catalyst
US5869419A (en) * 1996-06-25 1999-02-09 Mitsubishi Heavy Industries, Ltd. Nitrogen oxide removal catalyst

Also Published As

Publication number Publication date
JPS6345252B2 (en) 1988-09-08

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