JPS6456120A - Process for reducing nitrogen oxide in exhaust gas of internal combustion engine - Google Patents

Process for reducing nitrogen oxide in exhaust gas of internal combustion engine

Info

Publication number
JPS6456120A
JPS6456120A JP62210267A JP21026787A JPS6456120A JP S6456120 A JPS6456120 A JP S6456120A JP 62210267 A JP62210267 A JP 62210267A JP 21026787 A JP21026787 A JP 21026787A JP S6456120 A JPS6456120 A JP S6456120A
Authority
JP
Japan
Prior art keywords
exhaust gas
nox
internal combustion
combustion engine
reduced
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
JP62210267A
Other languages
Japanese (ja)
Inventor
Nobuaki Murakami
Kazuhiro Takeda
Masayasu Sakai
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 JP62210267A priority Critical patent/JPS6456120A/en
Publication of JPS6456120A publication Critical patent/JPS6456120A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Exhaust Gas After Treatment (AREA)
  • Treating Waste Gases (AREA)

Abstract

PURPOSE:To perform effective denitration of exhaust gas of an internal combustion engine by reducing NOx by adding fuel to the exhaust gas, forming then oxidation atmosphere by adding exhaust gas or air, then reducing NOx by elevating the temp. of the gaseous mixture to 700-1,200 deg.C and injecting NH3 thereinto. CONSTITUTION:Exhaust gas 4 discharged from a main body 1 of a Diesel engine is divided into two streams, and NOx in the main stream 5 is reduced by feeding fuel gas from a fuel feeding line 6. Thereafter, oxidizing atmosphere contg. 1-10% O2 is formed by adding exhaust gas 9 which is a part of the exhaust gas branched from the exhaust gas 8 and/or air from an air feeding line 10 to the stream of the exhaust gas in which NOx has been reduced. The temp. of the gaseous mixture is elevated to 700-1,200 deg.C, and NH3 is added thereto from an NH3 feeding line 11, and residual NOx is reduced in a noncatalytic denitration apparatus 14. Denitration is processed further, if necessary, in a catalytic reactor 17.
JP62210267A 1987-08-26 1987-08-26 Process for reducing nitrogen oxide in exhaust gas of internal combustion engine Pending JPS6456120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62210267A JPS6456120A (en) 1987-08-26 1987-08-26 Process for reducing nitrogen oxide in exhaust gas of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62210267A JPS6456120A (en) 1987-08-26 1987-08-26 Process for reducing nitrogen oxide in exhaust gas of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS6456120A true JPS6456120A (en) 1989-03-03

Family

ID=16586561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62210267A Pending JPS6456120A (en) 1987-08-26 1987-08-26 Process for reducing nitrogen oxide in exhaust gas of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS6456120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03236510A (en) * 1990-02-14 1991-10-22 Mitsubishi Heavy Ind Ltd Method of reducing nitrous oxide in combustion exhaust gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03236510A (en) * 1990-02-14 1991-10-22 Mitsubishi Heavy Ind Ltd Method of reducing nitrous oxide in combustion exhaust gas

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