JPS5456977A - Removal of nitrogen oxides in sintering exhaust gas - Google Patents

Removal of nitrogen oxides in sintering exhaust gas

Info

Publication number
JPS5456977A
JPS5456977A JP12345177A JP12345177A JPS5456977A JP S5456977 A JPS5456977 A JP S5456977A JP 12345177 A JP12345177 A JP 12345177A JP 12345177 A JP12345177 A JP 12345177A JP S5456977 A JPS5456977 A JP S5456977A
Authority
JP
Japan
Prior art keywords
gas
reactor
exhaust gas
charged
furnace
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
JP12345177A
Other languages
Japanese (ja)
Inventor
Yasuaki Ishikawa
Masayuki Saito
Joichi Takenaka
Yukihiro Tamura
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12345177A priority Critical patent/JPS5456977A/en
Publication of JPS5456977A publication Critical patent/JPS5456977A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture And Refinement Of Metals (AREA)
  • Treating Waste Gases (AREA)

Abstract

PURPOSE: To reduce the discharge of unreacted NH3 to the outside of reactor and also the absolute amount of NOx at the inlet of reactor by the method in which a part of preheated sintering exhaust gas and NH3 are charged into a heating furnace to mix with the heating furnace gas and the furnace temperature and the residence time of the mixed gas are set to a specific condition.
CONSTITUTION: After preheating the sintering exhaust gas to be treated through the heat absorption side of the heat exchanger 1, a part of the exhauust gas is charged through the blower 5 into the heating furnace, and the remainder is sent into the mixer 3 to mix with the gas from the furnace 2, from which the mixed gas is supplied to the reactor 4. In this case, where a part of the sintering exhaust gas and NH3 are charged, together with air and fuel, into the reactor, the temperature inside the furnace 2 is kept at more than 900°C and also the residence time of the mixed gas in the reactor is set to more than 0.5 second. Then, the treated gas after denitrification in the reactor 4 is charged into the heating side of the heat exchanger 1 and afterwards discharged to the outside
COPYRIGHT: (C)1979,JPO&Japio
JP12345177A 1977-10-17 1977-10-17 Removal of nitrogen oxides in sintering exhaust gas Pending JPS5456977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12345177A JPS5456977A (en) 1977-10-17 1977-10-17 Removal of nitrogen oxides in sintering exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12345177A JPS5456977A (en) 1977-10-17 1977-10-17 Removal of nitrogen oxides in sintering exhaust gas

Publications (1)

Publication Number Publication Date
JPS5456977A true JPS5456977A (en) 1979-05-08

Family

ID=14860923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12345177A Pending JPS5456977A (en) 1977-10-17 1977-10-17 Removal of nitrogen oxides in sintering exhaust gas

Country Status (1)

Country Link
JP (1) JPS5456977A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436610C (en) * 2007-04-06 2008-11-26 中国科学院过程工程研究所 Method of eliminating NOx in metallurgy sintering process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436610C (en) * 2007-04-06 2008-11-26 中国科学院过程工程研究所 Method of eliminating NOx in metallurgy sintering process

Similar Documents

Publication Publication Date Title
JPS5477277A (en) Method and apparatus for reducing nitrogen oxides in combustion exhaust gas
JPS5456977A (en) Removal of nitrogen oxides in sintering exhaust gas
JPS5741521A (en) Combustion method and combustion apparatus
JPS5211105A (en) Denitration process for exhaust gases of iron ore pelletizing
JPS5257551A (en) Recuperator for use of radiation pipe
JPS577230A (en) Method and apparatus for denitrating waste gas of kiln
JPS55107735A (en) Batch annealing furnace operating method
JPS51124667A (en) A dry denitration method for high-temperature exhaust gas discharged f rom metal heating furnaces and annealing furnaces
JPS56144322A (en) Treating method for waste product through fusion
JPS56108514A (en) Waste gas treatment
JPS5637035A (en) Denitrification of exhaust gas of sintering furnace
JPS5565817A (en) Treatment of radioactive solid waste
JPS5216472A (en) Nox reducing agent feeding process and waste gas treatment process
JPS51136562A (en) Proce ss for removal of nitrogen oxides in high temperature combustion gas
JPS5742320A (en) Method and apparatus for removing nox in baking furnace for powdered raw material
Shubin et al. Secondary Oxidation of Metallized Pellets During Heating and Cooling
JPS52107268A (en) Combustion apparatus
JPS5462167A (en) Burner exhaust gas treating method
JPS5615843A (en) Regeneration of denitrification catalyst
JPS5591905A (en) Using method for reducing agent in rotary kiln
JPS5268203A (en) Coke oven with waste gas treating means
JPS5448607A (en) Treatment of sintering machine exhaust gas
JPS53149166A (en) Removing method for nitrogen oxides in exhaust gas from combustion
JPS5617677A (en) Treatment of incineration ash containing hexavalent chromium
JPS527374A (en) Method for treatment of nitrogen oxides in exhaust gases