JPS55119424A - Nh3 injection amount control method - Google Patents

Nh3 injection amount control method

Info

Publication number
JPS55119424A
JPS55119424A JP2737479A JP2737479A JPS55119424A JP S55119424 A JPS55119424 A JP S55119424A JP 2737479 A JP2737479 A JP 2737479A JP 2737479 A JP2737479 A JP 2737479A JP S55119424 A JPS55119424 A JP S55119424A
Authority
JP
Japan
Prior art keywords
nox
amount
denitration efficiency
values
analyzer
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
JP2737479A
Other languages
Japanese (ja)
Other versions
JPS6114844B2 (en
Inventor
Seiji Iwamura
Shinji Yamada
Kazutaka Katsurahara
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries 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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP2737479A priority Critical patent/JPS55119424A/en
Publication of JPS55119424A publication Critical patent/JPS55119424A/en
Publication of JPS6114844B2 publication Critical patent/JPS6114844B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To prevent the excess injection of NH3 by actually measuring the inlet side NOx concentration of exhaust gas, calculating the NH3 amount necessary for obtaining the specified denitration efficiency, actually measuring the exit side NOx concentration, comparing the same with the NH3 amount necessary for holding the set value of denitration efficiency and controlling the NH3 injection amount by the lower of these values.
CONSTITUTION: The combustion exhaust gas from a generating source 1 is led to a denitration reactor 2 and the respectively measured values of a flowmeter 7, thermometer 8, moisture meter 9 and NOx analyzer 10 are inputted to an operator 11 to calculate the NOx content. The NH3 amount A meeting the specified denitration efficiency with respect to this NOx amount is instructed to a flow controller 12 so that NH3 is supplied from a tank 3. On the other hand, the denitration efficiency is calculated from the actually measured value of the NOx analyzer 13 and when it differs from the set value, the corrected NH3 amount B is inputted to the controller 12 and is compared with A. If a control valve 4 is controlled by the lower of either of these values, the excess injection by the miss-operation of the NOx analyzer may be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP2737479A 1979-03-09 1979-03-09 Nh3 injection amount control method Granted JPS55119424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2737479A JPS55119424A (en) 1979-03-09 1979-03-09 Nh3 injection amount control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2737479A JPS55119424A (en) 1979-03-09 1979-03-09 Nh3 injection amount control method

Publications (2)

Publication Number Publication Date
JPS55119424A true JPS55119424A (en) 1980-09-13
JPS6114844B2 JPS6114844B2 (en) 1986-04-21

Family

ID=12219261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2737479A Granted JPS55119424A (en) 1979-03-09 1979-03-09 Nh3 injection amount control method

Country Status (1)

Country Link
JP (1) JPS55119424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955334A (en) * 1982-09-22 1984-03-30 Babcock Hitachi Kk System for controlling injection of reducing agent in denitrator for stack gas
WO1991006506A1 (en) * 1987-03-06 1991-05-16 Fuel Tech, Inc. System for the efficient reduction of nitrogen oxides in an effluent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955334A (en) * 1982-09-22 1984-03-30 Babcock Hitachi Kk System for controlling injection of reducing agent in denitrator for stack gas
JPH0351453B2 (en) * 1982-09-22 1991-08-06 Babcock Hitachi Kk
WO1991006506A1 (en) * 1987-03-06 1991-05-16 Fuel Tech, Inc. System for the efficient reduction of nitrogen oxides in an effluent

Also Published As

Publication number Publication date
JPS6114844B2 (en) 1986-04-21

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