JPS5451969A - Method of removing nox in exhaust gas - Google Patents

Method of removing nox in exhaust gas

Info

Publication number
JPS5451969A
JPS5451969A JP11809077A JP11809077A JPS5451969A JP S5451969 A JPS5451969 A JP S5451969A JP 11809077 A JP11809077 A JP 11809077A JP 11809077 A JP11809077 A JP 11809077A JP S5451969 A JPS5451969 A JP S5451969A
Authority
JP
Japan
Prior art keywords
temp
exhaust gas
heat
heat exchanger
nox
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.)
Pending
Application number
JP11809077A
Other languages
Japanese (ja)
Inventor
Shigeru Haseba
Noriaki Shiki
Taisuke Mizuno
Yoshinori Takeda
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP11809077A priority Critical patent/JPS5451969A/en
Publication of JPS5451969A publication Critical patent/JPS5451969A/en
Pending legal-status Critical Current

Links

Landscapes

  • Chimneys And Flues (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: To effectively remove NOx while inhibiting heat loss, by beforehand forming a catalyst layer for reducing NOx into a heat exchanger, by heating exhaust gas by passing it in the high temp side direction from the low temp side of the heat exchanger, and by again passing it to the low temp side from the high temp side of the heat exchanger.
CONSTITUTION: Exhaust gas containing NOx is fed to a heat exchanger 1 from the arrow head A direction, its temp rises due to heat from a heat exchanging plate 2 and 1st stage NOx removal is performed at a catalyst filled portion 4a. Exhaust gas is temp raised up to a fixed temp at an auxiliary heater 3, introduced to a catalyst filled portion 5a from an arrow head B, heat exchanged with exhaust gas from the arrow head A direction while carrying out 2nd stage NOx removal, changed into comparatively low temp, and introduced to a return path 5
COPYRIGHT: (C)1979,JPO&Japio
JP11809077A 1977-09-30 1977-09-30 Method of removing nox in exhaust gas Pending JPS5451969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11809077A JPS5451969A (en) 1977-09-30 1977-09-30 Method of removing nox in exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11809077A JPS5451969A (en) 1977-09-30 1977-09-30 Method of removing nox in exhaust gas

Publications (1)

Publication Number Publication Date
JPS5451969A true JPS5451969A (en) 1979-04-24

Family

ID=14727738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11809077A Pending JPS5451969A (en) 1977-09-30 1977-09-30 Method of removing nox in exhaust gas

Country Status (1)

Country Link
JP (1) JPS5451969A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051534A (en) * 1983-08-31 1985-03-23 Nippon Oil Co Ltd Removal of nitrogen oxide
JP2006336559A (en) * 2005-06-02 2006-12-14 Denso Corp Nox removing device
JP2010275922A (en) * 2009-05-28 2010-12-09 Isuzu Motors Ltd Exhaust emission control device
JP2013048718A (en) * 2011-08-31 2013-03-14 Mitsubishi Electric Corp Deodorizing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051534A (en) * 1983-08-31 1985-03-23 Nippon Oil Co Ltd Removal of nitrogen oxide
JP2006336559A (en) * 2005-06-02 2006-12-14 Denso Corp Nox removing device
JP4552138B2 (en) * 2005-06-02 2010-09-29 株式会社デンソー NOx removal device
JP2010275922A (en) * 2009-05-28 2010-12-09 Isuzu Motors Ltd Exhaust emission control device
JP2013048718A (en) * 2011-08-31 2013-03-14 Mitsubishi Electric Corp Deodorizing device

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