IT1247541B - Processo per ridurre gli ossidi di azoto nei gas di combustione - Google Patents

Processo per ridurre gli ossidi di azoto nei gas di combustione

Info

Publication number
IT1247541B
IT1247541B ITMI911235A ITMI911235A IT1247541B IT 1247541 B IT1247541 B IT 1247541B IT MI911235 A ITMI911235 A IT MI911235A IT MI911235 A ITMI911235 A IT MI911235A IT 1247541 B IT1247541 B IT 1247541B
Authority
IT
Italy
Prior art keywords
nitrogen oxides
combustion gases
boiler
region
reducing nitrogen
Prior art date
Application number
ITMI911235A
Other languages
English (en)
Inventor
Michele Gennaro De
Sisto Bertacchi
Stefano Malloggi
Original Assignee
Ente Naz Energia Elettrica
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 Ente Naz Energia Elettrica filed Critical Ente Naz Energia Elettrica
Priority to ITMI911235A priority Critical patent/IT1247541B/it
Publication of ITMI911235A0 publication Critical patent/ITMI911235A0/it
Priority to EP91116493A priority patent/EP0512156A1/en
Publication of ITMI911235A1 publication Critical patent/ITMI911235A1/it
Application granted granted Critical
Publication of IT1247541B publication Critical patent/IT1247541B/it

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 
    • F23J7/00—Arrangement of devices for supplying chemicals to fire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2201/00—Staged combustion
    • F23C2201/30—Staged fuel supply
    • F23C2201/301—Staged fuel supply with different fuels in stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/20—Non-catalytic reduction devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

Processo per ridurre gli ossidi di azoto nel gas di combustione in una caldaia che comprende contemporaneamente la fase di bruciare convenzionalmente un combustibile primario in una zona primaria e le fasi di bruciare del combustibile secondario in una regione della caldaia in cui i gas sono a temperatura di circa 1200°C - 1300°C, iniettare in adiacenza di detta regione un agente riducente capace di generare radicali NH1 e iniettare aria in una regione della caldaia in cui i gas sono a temperatura di circa 1100°C - 1000°C.(FIG. 2)
ITMI911235A 1991-05-07 1991-05-07 Processo per ridurre gli ossidi di azoto nei gas di combustione IT1247541B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITMI911235A IT1247541B (it) 1991-05-07 1991-05-07 Processo per ridurre gli ossidi di azoto nei gas di combustione
EP91116493A EP0512156A1 (en) 1991-05-07 1991-09-27 A process for reducing nitric oxides in a flue gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI911235A IT1247541B (it) 1991-05-07 1991-05-07 Processo per ridurre gli ossidi di azoto nei gas di combustione

Publications (3)

Publication Number Publication Date
ITMI911235A0 ITMI911235A0 (it) 1991-05-07
ITMI911235A1 ITMI911235A1 (it) 1992-11-07
IT1247541B true IT1247541B (it) 1994-12-17

Family

ID=11359846

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911235A IT1247541B (it) 1991-05-07 1991-05-07 Processo per ridurre gli ossidi di azoto nei gas di combustione

Country Status (2)

Country Link
EP (1) EP0512156A1 (it)
IT (1) IT1247541B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501418C2 (sv) * 1992-05-18 1995-02-13 Gothia Tool Trading Hb Förfarande och anordning vid förbränningsenhet för att skapa förhållanden för reduktion av miljöstörande ämnen
FR2749066B1 (fr) * 1996-05-21 1998-08-21 Gaz De France Procede de reduction, par recombustion, des oxydes d'azote contenus dans les fumees issues d'une combustion primaire realisee dans un four, et installation pour sa mise en oeuvre
CN100346105C (zh) * 2004-06-07 2007-10-31 上海电力学院 多级再燃控制大容量燃煤锅炉NOx生成的方法
FR2934790B1 (fr) * 2008-08-08 2011-11-18 Lab Sa Procede et installation d'epuration de fumees de combustion contenant des oxydes d'azote
FR2941869B1 (fr) * 2009-02-10 2013-03-29 Novergie Procede de reduction des oxydes d'azote issus de la combustion des combustibles solides
CN103084063A (zh) * 2011-10-28 2013-05-08 浙江海亮环境材料有限公司 一种针对sncr脱硝的优化方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120004A (ja) * 1982-01-11 1983-07-16 Mitsui Eng & Shipbuild Co Ltd 二段燃焼方法
IT1230644B (it) * 1988-11-15 1991-10-28 Ente Naz Energia Elettrica Miscela per ridurre sostanze inquinanti nei fumi di una caldaia.
DE3943084A1 (de) * 1989-12-27 1991-07-04 Saarbergwerke Ag Verfahren zur verringerung der stickoxidemission bei der verfeuerung von festen brennstoffen

Also Published As

Publication number Publication date
ITMI911235A1 (it) 1992-11-07
EP0512156A1 (en) 1992-11-11
ITMI911235A0 (it) 1991-05-07

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970529