JPS5444233A - Apparatus to reduce nitrogen oxide in burnt exhaust gas - Google Patents

Apparatus to reduce nitrogen oxide in burnt exhaust gas

Info

Publication number
JPS5444233A
JPS5444233A JP11057177A JP11057177A JPS5444233A JP S5444233 A JPS5444233 A JP S5444233A JP 11057177 A JP11057177 A JP 11057177A JP 11057177 A JP11057177 A JP 11057177A JP S5444233 A JPS5444233 A JP S5444233A
Authority
JP
Japan
Prior art keywords
nitrogen oxide
exhaust gas
reduce
reducing
injection
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
JP11057177A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Takahashi
Masanobu Kusaba
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
Original Assignee
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11057177A priority Critical patent/JPS5444233A/en
Publication of JPS5444233A publication Critical patent/JPS5444233A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Incineration Of Waste (AREA)

Abstract

PURPOSE:To reduce the nitrogen oxide highly effectively and ecconomically by forming an introduction pipe for an injection agent to reduce the nitrogen oxide in such a manner that the pipe is bent within an exhausting duct and equilibrating the injection agent and the combustion gas so as to result in a gaseous phase. CONSTITUTION:An injection agent for reducing and decomposing a nitrogen oxide, for example, an ammonia aqueous solution as a reducing agent and a hydrogen peroxide aqueous solution 7 which lowers the reducing reaction temperature are passed through introduction pipes 2, 3 which are bent reversely within an exhausting duct, pre-heated by means of the exhaust gas so as to make a change from a liquid phase to a gaseous phase and uniformly injected into the burnt exhaust gas from nozzles 4, 5 when equilibrated with the exhaust gas temperature, so as to reduce and decompose the nitrogen oxide. By this constitution, the heat transfer area is increased and an effect is obtained to render uniform the outlet condition of all the injection nozzles without employing complex heat exchanger or cooling means or the like.
JP11057177A 1977-09-16 1977-09-16 Apparatus to reduce nitrogen oxide in burnt exhaust gas Pending JPS5444233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11057177A JPS5444233A (en) 1977-09-16 1977-09-16 Apparatus to reduce nitrogen oxide in burnt exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11057177A JPS5444233A (en) 1977-09-16 1977-09-16 Apparatus to reduce nitrogen oxide in burnt exhaust gas

Publications (1)

Publication Number Publication Date
JPS5444233A true JPS5444233A (en) 1979-04-07

Family

ID=14539198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11057177A Pending JPS5444233A (en) 1977-09-16 1977-09-16 Apparatus to reduce nitrogen oxide in burnt exhaust gas

Country Status (1)

Country Link
JP (1) JPS5444233A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011000685A1 (en) * 2009-07-01 2011-01-06 Sulzer Chemtech Ag Device for cleaning exhaust gases containing nox
EP2353704A3 (en) * 2010-02-03 2011-10-26 Babcock & Wilcox Power Generation Group, Inc. Stepped down gas device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011000685A1 (en) * 2009-07-01 2011-01-06 Sulzer Chemtech Ag Device for cleaning exhaust gases containing nox
US20120087840A1 (en) * 2009-07-01 2012-04-12 Sebastian Hirschberg Apparatus for the Purification of Exhaust Gases containing NOx
CN102472142A (en) * 2009-07-01 2012-05-23 苏舍化学技术有限公司 Device For Cleaning Exhaust Gases Containing Nox
EP2353704A3 (en) * 2010-02-03 2011-10-26 Babcock & Wilcox Power Generation Group, Inc. Stepped down gas device

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