JPS56163742A - Control device for amount of ammonia addition in denitration of coke oven waste gas - Google Patents

Control device for amount of ammonia addition in denitration of coke oven waste gas

Info

Publication number
JPS56163742A
JPS56163742A JP2516581A JP2516581A JPS56163742A JP S56163742 A JPS56163742 A JP S56163742A JP 2516581 A JP2516581 A JP 2516581A JP 2516581 A JP2516581 A JP 2516581A JP S56163742 A JPS56163742 A JP S56163742A
Authority
JP
Japan
Prior art keywords
ammonia
waste gas
amount
denitration
coke oven
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
JP2516581A
Other languages
Japanese (ja)
Other versions
JPS637086B2 (en
Inventor
Tadashi Yamada
Masao Inamura
Takeaki Yoshikawa
Suzuo Kayano
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.)
Niigata Engineering Co Ltd
Original Assignee
Niigata Engineering Co 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 Niigata Engineering Co Ltd filed Critical Niigata Engineering Co Ltd
Priority to JP2516581A priority Critical patent/JPS56163742A/en
Publication of JPS56163742A publication Critical patent/JPS56163742A/en
Publication of JPS637086B2 publication Critical patent/JPS637086B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To remove NOx efficiently and economically and reduce unreacted ammonia by controlling the amount of ammonia addition according to the fluctuations in the NOx concn. in waste gas in a catalytic reduction denitration method for coke over waste gas.
CONSTITUTION: In the catalytic reduction denitration of coke oven waste gas, the total amount of NOxs in the waste gas entering the catalyst bed of a reaction tower 1 is determined from flow rate and an analyzer 12, and the amount of ammonia corresponding to this is calculated with a rate setter 14. A control valve 24 is moved by the deviation between this signal and the actual flow rate of ammonia. Whereas, coke oven undergoes alteration periodically, and causes a sharp decrease particulrly in the NOx concn. and therefore at such a time, a timer 26 operates to cut off between a controller 23 and the valve 24, thereby stopping the supply of ammonia. In this way, denitration is accomplished efficiently, and even more, the oversupply of ammonia is eliminated and secondary pollution is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP2516581A 1981-02-23 1981-02-23 Control device for amount of ammonia addition in denitration of coke oven waste gas Granted JPS56163742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2516581A JPS56163742A (en) 1981-02-23 1981-02-23 Control device for amount of ammonia addition in denitration of coke oven waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2516581A JPS56163742A (en) 1981-02-23 1981-02-23 Control device for amount of ammonia addition in denitration of coke oven waste gas

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3196877A Division JPS53116269A (en) 1977-03-23 1977-03-23 Method of denitrating coke furnace exhaust gases

Publications (2)

Publication Number Publication Date
JPS56163742A true JPS56163742A (en) 1981-12-16
JPS637086B2 JPS637086B2 (en) 1988-02-15

Family

ID=12158392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2516581A Granted JPS56163742A (en) 1981-02-23 1981-02-23 Control device for amount of ammonia addition in denitration of coke oven waste gas

Country Status (1)

Country Link
JP (1) JPS56163742A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473537A (en) * 1982-12-27 1984-09-25 General Electric Company Ammonia control system for NOx emission control for gas turbine exhaust
US4473536A (en) * 1982-12-27 1984-09-25 General Electric Company Catalytic pollution control system for gas turbine exhaust
JPS60216829A (en) * 1984-04-13 1985-10-30 Mitsubishi Heavy Ind Ltd Denitration apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473537A (en) * 1982-12-27 1984-09-25 General Electric Company Ammonia control system for NOx emission control for gas turbine exhaust
US4473536A (en) * 1982-12-27 1984-09-25 General Electric Company Catalytic pollution control system for gas turbine exhaust
JPS60216829A (en) * 1984-04-13 1985-10-30 Mitsubishi Heavy Ind Ltd Denitration apparatus
JPH0533088B2 (en) * 1984-04-13 1993-05-18 Mitsubishi Heavy Ind Ltd

Also Published As

Publication number Publication date
JPS637086B2 (en) 1988-02-15

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