JPS5527021A - Treatment of waste gas - Google Patents

Treatment of waste gas

Info

Publication number
JPS5527021A
JPS5527021A JP9868078A JP9868078A JPS5527021A JP S5527021 A JPS5527021 A JP S5527021A JP 9868078 A JP9868078 A JP 9868078A JP 9868078 A JP9868078 A JP 9868078A JP S5527021 A JPS5527021 A JP S5527021A
Authority
JP
Japan
Prior art keywords
waste gas
sulfer
nitrogen oxides
ammonia
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
JP9868078A
Other languages
Japanese (ja)
Other versions
JPS6147128B2 (en
Inventor
Akira Kato
Seiji Takeuchi
Yuichi Kamo
Shigeo Uno
Jinichi Imahashi
Shinpei Matsuda
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 JP9868078A priority Critical patent/JPS5527021A/en
Publication of JPS5527021A publication Critical patent/JPS5527021A/en
Publication of JPS6147128B2 publication Critical patent/JPS6147128B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To remove nitrogen oxides stably at a relatively lower temperature while maintaining the activity of a catalyst by removing selectively sulfer trioxide from waste gas containing nitrogen oxides and sulfer oxides, and then catalytically reducing the waste gas with ammonia.
CONSTITUTION: Sulfer trioxide is selectively removed at a temperature of from 200 to 350°C from waste gas containing nitrogen oxides and sulfer oxides by using, as an absorbent, an alkali metal or alkaline earth metal oxide such as calcium oxide, etc. or iron oxide. Then, the resulting gas is reduced catalytically with ammonia at a temperature of from 200 to 350°C. When sulfer trioxide is previously removed, subsequently the catalytic reduction of the waste gas with ammonia can be carried out at a relatively lower temperature, and the activity of the catalyst and the removal rate of nitrogen oxides can be maintained stably.
COPYRIGHT: (C)1980,JPO&Japio
JP9868078A 1978-08-15 1978-08-15 Treatment of waste gas Granted JPS5527021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9868078A JPS5527021A (en) 1978-08-15 1978-08-15 Treatment of waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9868078A JPS5527021A (en) 1978-08-15 1978-08-15 Treatment of waste gas

Publications (2)

Publication Number Publication Date
JPS5527021A true JPS5527021A (en) 1980-02-26
JPS6147128B2 JPS6147128B2 (en) 1986-10-17

Family

ID=14226218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9868078A Granted JPS5527021A (en) 1978-08-15 1978-08-15 Treatment of waste gas

Country Status (1)

Country Link
JP (1) JPS5527021A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257821A (en) * 1984-06-04 1985-12-19 Babcock Hitachi Kk Denitration and desulfurization of exhaust gas
JP2010236877A (en) * 2009-03-30 2010-10-21 Chubu Electric Power Co Inc Device and method for measurement of ammonia concentration in exhaust gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257821A (en) * 1984-06-04 1985-12-19 Babcock Hitachi Kk Denitration and desulfurization of exhaust gas
JP2010236877A (en) * 2009-03-30 2010-10-21 Chubu Electric Power Co Inc Device and method for measurement of ammonia concentration in exhaust gas

Also Published As

Publication number Publication date
JPS6147128B2 (en) 1986-10-17

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