JPS54115672A - Treating method for exhaust gas containing nitrogen oxides - Google Patents

Treating method for exhaust gas containing nitrogen oxides

Info

Publication number
JPS54115672A
JPS54115672A JP2204678A JP2204678A JPS54115672A JP S54115672 A JPS54115672 A JP S54115672A JP 2204678 A JP2204678 A JP 2204678A JP 2204678 A JP2204678 A JP 2204678A JP S54115672 A JPS54115672 A JP S54115672A
Authority
JP
Japan
Prior art keywords
catalyst
exhaust gas
titanium oxide
gas containing
nitrogen oxides
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
JP2204678A
Other languages
Japanese (ja)
Other versions
JPS576377B2 (en
Inventor
Yoichi Sakuta
Shinpei Matsuda
Shigeo Uno
Akira Kato
Fumito Nakajima
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.)
Hitachi Ltd
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Hitachi 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 Babcock Hitachi KK, Hitachi Ltd filed Critical Babcock Hitachi KK
Priority to JP2204678A priority Critical patent/JPS54115672A/en
Publication of JPS54115672A publication Critical patent/JPS54115672A/en
Publication of JPS576377B2 publication Critical patent/JPS576377B2/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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

PURPOSE:To form NH4NO3 by the reaction of NO2 and NH3 and to reduce NO2 to harmless substance, by adding NH3 in exhaust gas containing NO2 and contacting with metal oxide catalyst mainly composed of titanium oxide in a fixed temperature range. CONSTITUTION:Catalyst compounded more than than one kind of metal oxides among V, Cr, Mn, Mo, Fe and W at 0.02-1, especially 0.05-0.6, of atomic ratio against titanium oxide (for example: TiO2) 1, is prepared. Next, NO2 and NH3 in exhaust gas are reacted at 50-150 deg.C, especially 70-130 deg.C under the exsistence of titanium oxide base catalyst. Then, NO2 is converted to NH4 NO3 or NH4NO2 and the above product is mainly accumulated on the catalyst and then, is removed from the gas. Also, when NOx in treating gas is mainly composed of NO, the above process is applied after NO is oxidized to NO2. Further, the catalyst lowered NO2 removing efficiency by the deposition of NH4NO2, is able to regenerate by heating at 150-200 deg.C and decomposing deposited product to NH3 and NHO3.
JP2204678A 1978-03-01 1978-03-01 Treating method for exhaust gas containing nitrogen oxides Granted JPS54115672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2204678A JPS54115672A (en) 1978-03-01 1978-03-01 Treating method for exhaust gas containing nitrogen oxides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2204678A JPS54115672A (en) 1978-03-01 1978-03-01 Treating method for exhaust gas containing nitrogen oxides

Publications (2)

Publication Number Publication Date
JPS54115672A true JPS54115672A (en) 1979-09-08
JPS576377B2 JPS576377B2 (en) 1982-02-04

Family

ID=12071980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2204678A Granted JPS54115672A (en) 1978-03-01 1978-03-01 Treating method for exhaust gas containing nitrogen oxides

Country Status (1)

Country Link
JP (1) JPS54115672A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0256245A (en) * 1988-08-23 1990-02-26 Sakai Chem Ind Co Ltd Catalyst for removing nitrogen oxide
JP2011050954A (en) * 2010-10-14 2011-03-17 Hino Motors Ltd Method for regenerating selective reduction type catalyst
CN102836716A (en) * 2011-06-24 2012-12-26 北京石油化工学院 Nanometer titanium dioxide loaded metal oxide catalyst, preparation method and applications thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166463U (en) * 1988-05-10 1989-11-21

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089291A (en) * 1973-12-12 1975-07-17
JPS5089290A (en) * 1973-12-12 1975-07-17
JPS5194470A (en) * 1975-02-18 1976-08-19
JPS51103091A (en) * 1975-03-06 1976-09-11 Kurashiki Boseki Kk
JPS5265191A (en) * 1975-11-25 1977-05-30 Mitsubishi Petrochem Co Ltd Catalytic moldings
JPS5421956A (en) * 1977-07-20 1979-02-19 Hitachi Ltd Method of removing nitrogen oxides contained in exhaust gas
JPS5423068A (en) * 1977-07-22 1979-02-21 Hitachi Ltd Removing method for nitrogen oxides in exhaust gas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089291A (en) * 1973-12-12 1975-07-17
JPS5089290A (en) * 1973-12-12 1975-07-17
JPS5194470A (en) * 1975-02-18 1976-08-19
JPS51103091A (en) * 1975-03-06 1976-09-11 Kurashiki Boseki Kk
JPS5265191A (en) * 1975-11-25 1977-05-30 Mitsubishi Petrochem Co Ltd Catalytic moldings
JPS5421956A (en) * 1977-07-20 1979-02-19 Hitachi Ltd Method of removing nitrogen oxides contained in exhaust gas
JPS5423068A (en) * 1977-07-22 1979-02-21 Hitachi Ltd Removing method for nitrogen oxides in exhaust gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0256245A (en) * 1988-08-23 1990-02-26 Sakai Chem Ind Co Ltd Catalyst for removing nitrogen oxide
JP2011050954A (en) * 2010-10-14 2011-03-17 Hino Motors Ltd Method for regenerating selective reduction type catalyst
CN102836716A (en) * 2011-06-24 2012-12-26 北京石油化工学院 Nanometer titanium dioxide loaded metal oxide catalyst, preparation method and applications thereof

Also Published As

Publication number Publication date
JPS576377B2 (en) 1982-02-04

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