JPS57159526A - Temp. control of denitration catalytic apparatus - Google Patents

Temp. control of denitration catalytic apparatus

Info

Publication number
JPS57159526A
JPS57159526A JP56043113A JP4311381A JPS57159526A JP S57159526 A JPS57159526 A JP S57159526A JP 56043113 A JP56043113 A JP 56043113A JP 4311381 A JP4311381 A JP 4311381A JP S57159526 A JPS57159526 A JP S57159526A
Authority
JP
Japan
Prior art keywords
temp
gas
catalyst
catalyst layer
recirculating
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
JP56043113A
Other languages
Japanese (ja)
Other versions
JPH022607B2 (en
Inventor
Yoshinori Takimoto
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP56043113A priority Critical patent/JPS57159526A/en
Publication of JPS57159526A publication Critical patent/JPS57159526A/en
Publication of JPH022607B2 publication Critical patent/JPH022607B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: To control the temp. of the denitration catalytic apparatus to a proper temp. range by recirculating the outlet gas of said catalyst apparatus to the inlet thereof to prevent temp. rise of a catalyst layer due to reaction heat when a NOX concn. is high.
CONSTITUTION: A gas 7 to be treated is passed through a preheater 1 and, after NH3 3 is added to said gas, NOX in the gas is subjected to contact reduction in a catalyst tower 2. The treated gas is cooled in a cooler 4 to lower only the temp. raised in the catalyst tower 2 and, after cooling, a part thereof is exhausted from a blower and the remainder is returned to the inlet side of the preheater 1 through a recirculation line 6. When an exhaust gas recirculating amount is defficient, an inert gas 12 is introduced from a three-way control valve 11. The temp. control of a catalyst layer is carried out by adjusting the opening degree of the three-way control valve 11 so as to adjust the temp. detected by a thermometer 2A to a definite temp. range. As described above, by recirculating an appropriate amount of the exhaust gas corresponding to the temp. of the catalyst layer in the catalyst tower, the temp. rise of the catalyst layer is suppressed and catalytic capacity can be kept high.
COPYRIGHT: (C)1982,JPO&Japio
JP56043113A 1981-03-26 1981-03-26 Temp. control of denitration catalytic apparatus Granted JPS57159526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043113A JPS57159526A (en) 1981-03-26 1981-03-26 Temp. control of denitration catalytic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043113A JPS57159526A (en) 1981-03-26 1981-03-26 Temp. control of denitration catalytic apparatus

Publications (2)

Publication Number Publication Date
JPS57159526A true JPS57159526A (en) 1982-10-01
JPH022607B2 JPH022607B2 (en) 1990-01-18

Family

ID=12654768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043113A Granted JPS57159526A (en) 1981-03-26 1981-03-26 Temp. control of denitration catalytic apparatus

Country Status (1)

Country Link
JP (1) JPS57159526A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02253827A (en) * 1989-03-27 1990-10-12 Kubota Ltd Waste ozone decomposition device
JP2010184199A (en) * 2009-02-12 2010-08-26 Mitsubishi Rayon Co Ltd Apparatus and method for treating exhaust gas
JP2013124608A (en) * 2011-12-15 2013-06-24 Mitsubishi Motors Corp Exhaust emission control device of internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0478505U (en) * 1990-11-19 1992-07-08

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02253827A (en) * 1989-03-27 1990-10-12 Kubota Ltd Waste ozone decomposition device
JP2010184199A (en) * 2009-02-12 2010-08-26 Mitsubishi Rayon Co Ltd Apparatus and method for treating exhaust gas
JP2013124608A (en) * 2011-12-15 2013-06-24 Mitsubishi Motors Corp Exhaust emission control device of internal combustion engine

Also Published As

Publication number Publication date
JPH022607B2 (en) 1990-01-18

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