EP0043567B1 - Verfahren und Rostfeuerung zur Verfeuerung fester Brennstoffe - Google Patents

Verfahren und Rostfeuerung zur Verfeuerung fester Brennstoffe Download PDF

Info

Publication number
EP0043567B1
EP0043567B1 EP81105171A EP81105171A EP0043567B1 EP 0043567 B1 EP0043567 B1 EP 0043567B1 EP 81105171 A EP81105171 A EP 81105171A EP 81105171 A EP81105171 A EP 81105171A EP 0043567 B1 EP0043567 B1 EP 0043567B1
Authority
EP
European Patent Office
Prior art keywords
combustion
grate
zones
water vapour
water vapor
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.)
Expired
Application number
EP81105171A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0043567A1 (de
Inventor
Johannes Josef Dr.-Ing. Martin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81105171T priority Critical patent/ATE11076T1/de
Publication of EP0043567A1 publication Critical patent/EP0043567A1/de
Application granted granted Critical
Publication of EP0043567B1 publication Critical patent/EP0043567B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F23L1/02—Passages or apertures for delivering primary air for combustion  by discharging the air below the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F23L7/005—Evaporated water; Steam

Definitions

  • the invention relates to a method for firing solid fuels with zone-controlled air-conditioned underwind feed, the air conditioning being carried out by adding water vapor, and to grate firing for carrying out the method.
  • the steadily increasing environmental impact has led to the fact that large combustion plants pay attention to the lowest possible nitrogen oxide emissions.
  • the nitrogen oxide formation depends on the one hand on the fuel used and on the other hand on the combustion temperature. With increasing dwell time and increasing excess air in the area of high temperatures, nitrogen oxide formation is favored.
  • An air-conditioned underwind feed is also known and results from GB-PS 196 054 and DE-PS 547 218.
  • Under-firing zones are provided for the firing according to GB-PS 196 054, but this area is divided primarily in the longitudinal direction, these two longitudinal zones are only divided into two areas in the transverse direction, so that sensitive regulation is not possible with this rough subdivision.
  • the individual subdivided zones or channels leading up to the grate do not result in an exact subdivision of the subzones, since the space directly underneath the grate bars is not subdivided by these channels.
  • the air rising from the channels which is mixed with water vapor, does not necessarily lead to certain rust zones.
  • the object of the invention is to show a possibility in which the long-known water vapor supply to the combustion air can be used in connection with the endeavor to reduce the nitrogen oxide emission.
  • This object is achieved, starting from a method of the type described at the outset, according to the invention in that the zone-by-zone supply of water vapor takes place as a function of the NO x content occurring in the zone in question.
  • the introduction of water vapor into the burning layer together with the downwind has the advantage that the combustion process is influenced in a targeted manner so that it takes place in a temperature range in which the NO x formation is low, without the disadvantages mentioned above for have to put up with the nitrogen oxide emission applied procedures.
  • the use of water vapor as a ballast medium for lowering the combustion temperature in the furnace has the advantage that, due to the very high specific heat of water vapor, a lot of heat can be extracted from the combustion process with a comparable small volume of the water vapor to be supplied.
  • the water vapor is supplied essentially in countercurrent to the combustion air flowing upwards out of the respective underwind zone against the combustion grate.
  • the space under the firing grate is subdivided into individual underwind zones with regulated underwind supply and each underwind zone is supplied with a water vapor supply pipe is arranged, which extends transversely to the grate longitudinal direction and is provided with water vapor blow-out openings or water vapor blow-out nozzles, the outlet openings of which are provided on the side of the water vapor supply pipe facing away from the grate and that sensors are provided in the combustion chamber for determining the NO x content in the combustion gases.
  • the water vapor supply pipes are protected against the firing grate by a cover, preferably by support frames of the grate structure, in order to prevent the water vapor blow-out nozzles from becoming blocked.
  • a plurality of underwind zones 2 to 2 ′ ′′ are provided below a firing grate, generally designated 1, which are delimited from one another by partition walls 3.
  • the combustion air necessary for the combustion can be introduced through large openings 4 in the side wall 5 of the firing system 6 with inclined floors within the individual downwind zones 2 are designated, on which the ash falling through the furnace grate reaches a discharge opening 7.
  • the supply of water vapor which is removed as waste steam from the process circuit of the steam boiler connected downstream of the furnace, takes place via steam supply pipes 8 which have steam blow-out nozzles or steam blow-out openings 9 which are arranged on the respective steam supply pipe 8 in such a way that they blow the water steam almost vertically downwards , as indicated by the dash-dotted arrows 19.
  • the water vapor is directed towards the core of the combustion air emerging from the opening 4, so that a mixture of cross and counterflow is established because the combustion air first enters the respective underwind zone in the horizontal direction, is distributed there and then upwards to the firing grate 1 arrives.
  • the firing grate 1 consists in a known manner of individual grate steps 10 and 11, which are each constructed from grate bars lying side by side, which rest with their lower ends on step support frames 12 and 13, of which the step support frame 13 is fixed and the step support frame 12 is movable.
  • the latter are arranged on a zigzag bar 14 which can be moved back and forth in the direction of the double arrow 15.
  • This zigzag beam 14 is supported by rollers 16 on support frames 17 for the grate construction.
  • the steam supply pipes 8 are arranged below this support frame 17, whereby they are protected against grate diarrhea.
  • the regulation of the steam supply takes place zone by zone and preferably sequentially, e.g. B. depending on the length of the fire by means of corresponding valves 18 to 18 "” depending on the NO x content in the combustion gases, which can be determined by sensors 20 to 20 " Sensors use common gas chromatographs. With the help of these sensors, the valves 18 to 18 "” and thus the steam supply to the different underwind zones 2 to 2 "” are regulated. Of course, only a single sensor can also be provided, but the regulation of the steam supply is more precise if several sensors are used. These can be sampled one after the other for connection to the valve opening mechanism in such a way that, for. B.
  • the sensor 20 responds first and causes the valves 18 and 18 'to open. If the area of the harmful gases extends further over the grate length, then the sensor 20 'can then cause the additional opening of the valve 18 "and so on or the associated valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Air Supply (AREA)
  • Incineration Of Waste (AREA)
EP81105171A 1980-07-08 1981-07-03 Verfahren und Rostfeuerung zur Verfeuerung fester Brennstoffe Expired EP0043567B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105171T ATE11076T1 (de) 1980-07-08 1981-07-03 Verfahren und rostfeuerung zur verfeuerung fester brennstoffe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3025851 1980-07-08
DE3025851A DE3025851C2 (de) 1980-07-08 1980-07-08 Rostfeuerung

Publications (2)

Publication Number Publication Date
EP0043567A1 EP0043567A1 (de) 1982-01-13
EP0043567B1 true EP0043567B1 (de) 1985-01-02

Family

ID=6106698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105171A Expired EP0043567B1 (de) 1980-07-08 1981-07-03 Verfahren und Rostfeuerung zur Verfeuerung fester Brennstoffe

Country Status (6)

Country Link
US (1) US4394118A (pl)
EP (1) EP0043567B1 (pl)
JP (1) JPS5747109A (pl)
AT (1) ATE11076T1 (pl)
CA (1) CA1180537A (pl)
DE (2) DE3025851C2 (pl)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467731A (en) * 1982-08-13 1984-08-28 Kelley Company, Inc. Steam injection system for an incinerator
US4533314A (en) * 1983-11-03 1985-08-06 General Electric Company Method for reducing nitric oxide emissions from a gaseous fuel combustor
US4731988A (en) * 1985-07-30 1988-03-22 Michael Munk Internal combustion engine system and method with reduced noxious emissions
US4731990A (en) * 1985-07-30 1988-03-22 Michael Munk Internal combustion engine system and method with reduced noxious emissions
US4773846A (en) * 1985-07-30 1988-09-27 Michael Munk Combustion system and method with fog injection and heat exchange
US5029557A (en) * 1987-05-01 1991-07-09 Donlee Technologies, Inc. Cyclone combustion apparatus
DE3913886A1 (de) * 1989-04-27 1990-10-31 Omnical Gmbh Verfahren zur minderung der emissionen und zur optimierung der feuerfuehrung bei einer rostfeuerung
DE4113484A1 (de) * 1991-04-25 1992-10-29 Wanka Edwin Dipl Ing Fh Verfahren zur optimierung des verbrennungsmechanismus in einer verbrennungseinrichtung
DE19542013B4 (de) * 1995-11-10 2004-09-16 Karl Von Wedel Seitenbord für einen Kühlrost
US5832846A (en) * 1996-01-11 1998-11-10 Public Service Electric And Gas Corporation Water injection NOx control process and apparatus for cyclone boilers
DE19744867A1 (de) * 1997-10-10 1999-04-15 Munters Euroform Gmbh Carl Verfahren und Vorrichtung zum Betreiben eines mit flüssigen oder gasförmigen Kohlenwasserstoffen befeuerten Kessels
US6089223A (en) * 1998-01-28 2000-07-18 Webco Industries, Incorporated Direct contact water heating system
US6715295B2 (en) 2002-05-22 2004-04-06 Siemens Westinghouse Power Corporation Gas turbine pilot burner water injection and method of operation
US6708496B2 (en) 2002-05-22 2004-03-23 Siemens Westinghouse Power Corporation Humidity compensation for combustion control in a gas turbine engine
US6742341B2 (en) * 2002-07-16 2004-06-01 Siemens Westinghouse Power Corporation Automatic combustion control for a gas turbine
US8703064B2 (en) 2011-04-08 2014-04-22 Wpt Llc Hydrocabon cracking furnace with steam addition to lower mono-nitrogen oxide emissions
EP3290794A1 (en) 2016-09-05 2018-03-07 Technip France Method for reducing nox emission

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE64961C (de) * A. R. SENNETT in Brentford, Middlesex, England Vorrichtung zur Einführung von Luft oder Luft und Dampf in Kesselfeuerungen
DE168613C (pl) *
US1159862A (en) * 1915-02-16 1915-11-09 Westinghouse Machine Co Furnace.
US1291175A (en) * 1916-04-24 1919-01-14 Babcock & Wilcox Co Apparatus for washing waste gases and utilizing the heat thereof.
GB196054A (en) * 1922-01-11 1923-04-11 Joseph Albert Hill An improved method of and apparatus for firing the furnaces of steam generators and other furnaces
US1563132A (en) * 1924-07-02 1925-11-24 Wrigley Charles Combustion accelerator and smoke consumer
DE547218C (de) * 1930-05-31 1932-03-21 Sulzer Ag Rostfeuerung fuer Dampfkessel, bei welcher ein Dampfluftgemisch unter oder ueber den Rost geleitet wird
DE919188C (de) * 1949-10-27 1954-10-14 Martin Joh Jos Dr Ing Einrichtung zum Einstellen des Unterwindes bei Rostfeuerungen mit Zonenteilung
DE1039176B (de) * 1955-06-04 1958-09-18 Bergwerksverband Gmbh Verfahren zum Betrieb von Rostfeuerungen mit Zonenunterteilung
US3183864A (en) * 1962-02-14 1965-05-18 Combustion Eng Method and system for operating a furnace
US3456606A (en) * 1967-07-10 1969-07-22 Benjamin Withorn Combustion apparatus
US3530807A (en) * 1969-04-28 1970-09-29 Solomon Zalman Anti-pollution apparatus
US3785304A (en) * 1972-03-13 1974-01-15 K Stookey Method and apparatus for the thermal reduction of rubber or plastic material
US4089639A (en) * 1974-11-26 1978-05-16 John Zink Company Fuel-water vapor premix for low NOx burning
CH583881A5 (pl) * 1975-07-04 1977-01-14 Von Roll Ag
US4008038A (en) * 1975-09-10 1977-02-15 Columbia Technical Corporation Fuel conditioning apparatus and method
US4173450A (en) * 1976-03-29 1979-11-06 Allied Energy Corporation Device for injecting air processed to increase its humidity into oil burning furnaces
US4162140A (en) * 1977-09-26 1979-07-24 John Zink Company NOx abatement in burning of gaseous or liquid fuels
US4244684A (en) * 1979-06-12 1981-01-13 Carmel Energy, Inc. Method for controlling corrosion in thermal vapor injection gases

Also Published As

Publication number Publication date
JPS5747109A (en) 1982-03-17
JPH0113001B2 (pl) 1989-03-03
EP0043567A1 (de) 1982-01-13
DE3025851A1 (de) 1982-01-21
ATE11076T1 (de) 1985-01-15
CA1180537A (en) 1985-01-08
US4394118A (en) 1983-07-19
DE3025851C2 (de) 1982-06-03
DE3168027D1 (en) 1985-02-14

Similar Documents

Publication Publication Date Title
EP0043567B1 (de) Verfahren und Rostfeuerung zur Verfeuerung fester Brennstoffe
DE2615369C3 (de) Verfahren zur Rauchgaskonditionierung in Abfallverbrennungsanlagen mit Wärmeverwertung, insbesondere für kommunalen und industriellen Müll, und Vorrichtung zur Durchführung des Verfahrens
DE3614385C2 (pl)
DE2306537A1 (de) Verminderung der bildung von no tief x bei der verbrennung von brennstoffen
DE19629216C2 (de) Verfahren zur Verbrennung von thermisch zu behandelnden Stoffen
EP0006163A1 (de) Verfahren und Vorrichtungen zur Rauchgasführung in einem Wärmekessel
DE2601658C3 (de) Kühlvorrichtung für einen an der Ein- und Auslaßseite offenen Durchlaufofen zum Wärmebehandeln von Werkstücken
DE4200244A1 (de) Verfahren und vorrichtung zum kuehlen der heissen feststoffe eines wirbelschichtreaktors
EP2044368B1 (de) Thermische abgasreinigungsvorrichtung und verfahren zur thermischen abgasreinigung
DE2442122A1 (de) Pyrolyse-behaelter
DE202017107929U1 (de) Anlage zur Verbrennung organischen Materials
EP0244569B1 (de) Verfahren und Vorrichtung zum Betreiben eines Dampferzeugers
DE8018333U1 (de) Rostfeuerung
DE3606463A1 (de) Vorrichtung zur einstellung einer vorgegebenen rauchgastemperatur
DE2433387C3 (de) Einrichtung zur Zweitluftzufuhr zur Feuerung von Dampferzeugern
DE1802286C3 (de) Röhren-Wärmetauscher für die Kühlung von Rauchgasen aus Feuerungsanlagen
DE77784C (de) Feuerungsanlage
WO1996029539A1 (de) Verfahren und walzenrost zum verbrennen von müll
DD232437A5 (de) Verfahren und anlage zum behandeln von gasen und daempfen
EP0703408B1 (de) Verfahren und Vorrichtung zum Vergasen von Feststoffen
DE1501960C3 (de) Keramische Verbrennungseinrichtung für ein Brenngas niedrigen Heizwertes
DE1679393C (de) Heizkessel für flüssige oder gasförmige Brennstoffe mit einer Brennkammer und einer daran anschließenden konisch ausgebildeten Rauchgasführung
DE2209641C3 (de) Verfahren zur Verhinderung von Korrosion oder der Bildung eines sauren Rußes durch im Abgas vorhandene Schwefelsäurekomponenten an der Niedertemperaturseite eines ölgefeuerten Kessels
DE3444665A1 (de) Vorrichtung zur entschwefelung heisser, schadstoffhaltiger abgase
DE2131777B2 (de) Müllverbrennungsanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19811030

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI NL SE

REF Corresponds to:

Ref document number: 11076

Country of ref document: AT

Date of ref document: 19850115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3168027

Country of ref document: DE

Date of ref document: 19850214

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19850708

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19860703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19890703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890731

Ref country code: CH

Effective date: 19890731

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900731

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19900806

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19910731

BERE Be: lapsed

Owner name: MARTIN JOHANNES JOSEF

Effective date: 19910731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940617

Year of fee payment: 14

EAL Se: european patent in force in sweden

Ref document number: 81105171.3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950704

EUG Se: european patent has lapsed

Ref document number: 81105171.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960529

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960930

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST