JPS5484866A - Nh3 injection method - Google Patents

Nh3 injection method

Info

Publication number
JPS5484866A
JPS5484866A JP15254977A JP15254977A JPS5484866A JP S5484866 A JPS5484866 A JP S5484866A JP 15254977 A JP15254977 A JP 15254977A JP 15254977 A JP15254977 A JP 15254977A JP S5484866 A JPS5484866 A JP S5484866A
Authority
JP
Japan
Prior art keywords
liquid nozzle
exhaust gas
temperature
decomposition
nozzle
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.)
Pending
Application number
JP15254977A
Other languages
Japanese (ja)
Inventor
Yasushi 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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP15254977A priority Critical patent/JPS5484866A/en
Publication of JPS5484866A publication Critical patent/JPS5484866A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent decrease in denitration effect and corrosion of nozzles due to the decomposition of NH3 by maintaining the nozzle at a constant temperature with a cooling fluid introduced around a liquid nozzle for injecting NH3 into an exhaust gas passage.
CONSTITUTION: NH3 is injected into an exhaust gas passage maintaining the liquid nozzle at a temperature of 110 to 500°C with a cooling fluid introduced around at least a part of the liquid nozzle. Or a part of fluid flowing through the boiler system is introduced likewise to maintain the liquid nozzle at a temperature of 110 to 500°C. This prevents deterioration in the denitration effect due to decomposition of HN3 above 500°C. As a result, NH3 is combined with SO3 in the exhaust gas below 110°C to form H2SO4, thereby checking corrosion of the liquid nozzle.
COPYRIGHT: (C)1979,JPO&Japio
JP15254977A 1977-12-19 1977-12-19 Nh3 injection method Pending JPS5484866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15254977A JPS5484866A (en) 1977-12-19 1977-12-19 Nh3 injection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15254977A JPS5484866A (en) 1977-12-19 1977-12-19 Nh3 injection method

Publications (1)

Publication Number Publication Date
JPS5484866A true JPS5484866A (en) 1979-07-06

Family

ID=15542883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15254977A Pending JPS5484866A (en) 1977-12-19 1977-12-19 Nh3 injection method

Country Status (1)

Country Link
JP (1) JPS5484866A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330473A (en) * 1976-09-02 1978-03-22 Babcock Hitachi Kk Circulating and controlling method for cooling water used for nox-reducing agent injecting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330473A (en) * 1976-09-02 1978-03-22 Babcock Hitachi Kk Circulating and controlling method for cooling water used for nox-reducing agent injecting apparatus

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