JPS5472765A - Injecting method for ammonia-containing gas mixture - Google Patents

Injecting method for ammonia-containing gas mixture

Info

Publication number
JPS5472765A
JPS5472765A JP14039577A JP14039577A JPS5472765A JP S5472765 A JPS5472765 A JP S5472765A JP 14039577 A JP14039577 A JP 14039577A JP 14039577 A JP14039577 A JP 14039577A JP S5472765 A JPS5472765 A JP S5472765A
Authority
JP
Japan
Prior art keywords
gas
temp
mixt
nozzle
contg
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
JP14039577A
Other languages
Japanese (ja)
Inventor
Nobuo Aoki
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.)
IHI Corp
Original Assignee
Ishikawajima Harima Heavy Industries 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 Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd
Priority to JP14039577A priority Critical patent/JPS5472765A/en
Publication of JPS5472765A publication Critical patent/JPS5472765A/en
Pending legal-status Critical Current

Links

Landscapes

  • Chimneys And Flues (AREA)
  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To prevent excessive rise in temp. of NH3-contg. gas mixt, and nozzle for the gas mixt., which is injected into a high-temp. exhaust gas from a coal burning boiler etc. in order to denitrate the exhaust gas, by cooling and circulating a portion of NH3-contg. gas mixt. fed to the injection nozzle through a closed cycle system.
CONSTITUTION: Sterm (air) and NH3 gas, whose flow quantities are controlled respectively by control valves 1, 2, are mixed in a pipe line 7 and fed to injection nozzles 3, and is aprayed into high-temp. gas. The temp of the mixed gas is maintained at a temp. not higher than about 600°C for steam-NH3, and 400° for air-NH3 (to prevent decomposition of NH3). Excessive gas mixt. is delivered through a return pipe 4 to a cooler 5, where it is cooled, then it is pressureized by a blower 6 and is circulated to the nozzle 3. This process makes it unnecessary to use double tube and insulating material as well for nozzles.
COPYRIGHT: (C)1979,JPO&Japio
JP14039577A 1977-11-22 1977-11-22 Injecting method for ammonia-containing gas mixture Pending JPS5472765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14039577A JPS5472765A (en) 1977-11-22 1977-11-22 Injecting method for ammonia-containing gas mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14039577A JPS5472765A (en) 1977-11-22 1977-11-22 Injecting method for ammonia-containing gas mixture

Publications (1)

Publication Number Publication Date
JPS5472765A true JPS5472765A (en) 1979-06-11

Family

ID=15267791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14039577A Pending JPS5472765A (en) 1977-11-22 1977-11-22 Injecting method for ammonia-containing gas mixture

Country Status (1)

Country Link
JP (1) JPS5472765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186946U (en) * 1985-05-13 1986-11-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186946U (en) * 1985-05-13 1986-11-21

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