EP0352619B1 - Méthode de régulation de la puissance de combustion pour installations de combustion - Google Patents

Méthode de régulation de la puissance de combustion pour installations de combustion Download PDF

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Publication number
EP0352619B1
EP0352619B1 EP89113258A EP89113258A EP0352619B1 EP 0352619 B1 EP0352619 B1 EP 0352619B1 EP 89113258 A EP89113258 A EP 89113258A EP 89113258 A EP89113258 A EP 89113258A EP 0352619 B1 EP0352619 B1 EP 0352619B1
Authority
EP
European Patent Office
Prior art keywords
regulating
measured
mass flow
setpoint
moist
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 - Lifetime
Application number
EP89113258A
Other languages
German (de)
English (en)
Other versions
EP0352619A2 (fr
EP0352619A3 (fr
Inventor
Johannes Josef Edmund 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.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
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 Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP0352619A2 publication Critical patent/EP0352619A2/fr
Publication of EP0352619A3 publication Critical patent/EP0352619A3/fr
Application granted granted Critical
Publication of EP0352619B1 publication Critical patent/EP0352619B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/10—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught
    • F23N1/102—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/55—Controlling; Monitoring or measuring
    • F23G2900/55008—Measuring produced steam flow rate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F23N2225/06—Measuring pressure for determining flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/18—Incinerating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium

Definitions

  • the invention relates to a method for regulating the fire output in incineration plants, in particular waste incineration plants, in which the O 2 moisture content measured in the flue gas as a higher-level setpoint control variable for controlling the fuel supply and optionally the measured steam mass flow or the combustion chamber temperature determined in the combustion gas is used as a subordinate setpoint control variable for controlling the primary air supply.
  • a disadvantage of this method is the fact that the 0 2 -dry content does not give a definite statement about the 0 2 -dry content and thus about the true excess of air.
  • the measurement of the 0 2 dry content of the combustion gas is too sluggish and too uncertain under the existing operating conditions.
  • the combustion chamber temperature is kept constant as a superordinate setpoint with the 0 2 moisture content constant, there is a change in the steam mass flow in the event of fluctuations in the moisture content of the flue gases, which can lead to a deterioration in the thermal utilization of the overall system.
  • the material size ie the 0 2 moisture content, dominates over the thermal values, namely the steam mass flow and the combustion chamber temperature.
  • the object of the invention is to optimize both the emission values and the fire performance based on the two variants of the known methods mentioned at the outset.
  • This task can be accomplished in two ways.
  • the solution to the problem is based on a method in which the 0 2- moisture content measured in the flue gas is used as the superordinate setpoint control variable for controlling the fuel supply and the measured steam mass flow as subordinate setpoint control variable for controlling the primary air supply that the specified 0 2-humid setpoint is changed depending on the combustion chamber temperature measured in the flue gas.
  • two temperature points are defined as limit values, the 0 2 moist setpoint being increased when the upper temperature value is exceeded, while when the temperature falls below the lower limit, the 0 2-humid setpoint is lowered.
  • the "apparent" excess air is increased, while in the second case, the "apparent” excess air is reduced.
  • the combustion chamber temperature is within the selected limit values, there is no influence on the 0 2-humid setpoint.
  • An even better control accuracy is achieved according to a preferred embodiment of the method in that when the 0 2-moist setpoint changes, the rate of change of the measured temperature or. Steam mass flow value is taken into account.
  • the differential of the temperature change or the steam mass flow change over time is taken into account, so that a change in the 0 2 moist setpoint value can be carried out before the limit values are reached, as a result of which the combustion system operates even more evenly because the regulation is more sensitive.
  • the 0 2- moisture content measured in the flue gas 2 is used as the higher-level control variable 7 for controlling the fire output of a combustion system 1 consisting of the furnace and the boiler, which is fed to a controller 3 which, when this control variable deviates from a specific range of guide values, onto the feed device acts on the firing with fuel and / or acts on the grate drive.
  • the steam mass flow ⁇ D emerging from the boiler is measured and this control variable 10 is fed to a further controller 5 which, when the measured value deviates from a predetermined guide value range of the steam mass flow, to the devices provided for setting the amount of combustion air, such as, for. B. acts fan drive and control flaps in the air distribution system.
  • both the combustion chamber temperature as controlled variable 6 and the 0 2 moist content, which is designated as measured value 7, are determined in the flue gas 2 emerging from the combustion system 1. Both values 6 and 7 are fed to a controller 8. Based on a mode of operation that is to be regarded as particularly favorable or optimal, the measured 0 2 moisture content is regarded as the setpoint. If there is a change in the combustion chamber temperature, this change must be above a predefined tolerance limit, the 0 2-moist setpoint is changed by the controller 8.
  • controller 3 which changes the fuel supply by acting on the feed device and / or changes the grate speed by acting on the grate drive. In contrast to the known method shown in FIG. 1, the controller 3 is therefore not acted upon with the measured 0 2-humid value, but with a 0 2-humid setpoint corrected as a function of the combustion chamber temperature.
  • the measured steam mass flow ⁇ D is fed as control variable 10 to the controller 5, which, as in the known method, monitors the combustion air supply.
  • the measured 0 2 -measured measured value is also used as the setpoint, starting from an operating state which is considered to be optimal.
  • This measured value is also recorded in the flue gas 2, which leaves the combustion system 1 consisting of the furnace and the boiler.
  • This measured value 6 is fed to the controller 8.
  • the controller 8 receives the steam mass flow ⁇ D measured at 4 as the control variable 10.
  • the controller 8 now changes the control variable 6 when the steam mass flow leaves a predetermined range of guide values, namely when the upper steam mass flow limit value is exceeded the 0 2-humid setpoint is increased and when the lower steam mass flow limit value is undershot the 0 2-humid setpoint lowered and fed as a corrected controlled variable 11 to the controller 3, which makes a change in the fuel supply and / or the combustion grate speed with a corresponding deviation of the 0 2-humid setpoint.
  • the combustion chamber temperature measured in the flue gas is fed as a subordinate control variable 12 to the controller 5, which monitors the amount of combustion air supplied.

Claims (3)

  1. Procédé de régulation de la puissance dans des installations de combustion, en particulier pour la combustion de déchets, du type selon lequel on utilise la teneur en 02 humide mesurée dans les gaz de combustion comme valeur de consigne maximale pour le réglage de l'alimentation en combustible, ainsi que le débit massique de vapeur comme valeur de consigne minimale pour le réglage de l'alimentation en air primaire, CARACTERISE en ce que l'on fait varier la valeur de consigne donnée pour la teneur en humidité de 02 en fonction de la température du foyer constatée dans les gaz de combustion.
  2. Procédé de régulation de la puissance dans des installations de combustion, en particulier pour la combustion de déchets, du type selon lequel on utilise la teneur en 0₂ humide mesurée dans les gaz de combustion comme valeur de consigne maximale pour le règlage de l'alimentation en combustible ainsi que la température de foyer constatée dans les gaz brûlés comme valeur de consigne minimale pour le réglage de l'alimentation en air primaire, CARACTERISE en ce que l'on fait varier la valeur de consigne donnée pour la teneur en 0₂ humide en fonction du débit massique mesuré de vapeur.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que, pour faire varier la valeur de consigne de la teneur en 0₂ humide on fait intervenir la vitesse de variation des données mesurées respectivement pour la température ou le débit massique en vapeur.
EP89113258A 1988-07-29 1989-07-19 Méthode de régulation de la puissance de combustion pour installations de combustion Expired - Lifetime EP0352619B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825933 1988-07-29
DE3825933A DE3825933A1 (de) 1988-07-29 1988-07-29 Verfahren zur regelung der feuerleistung bei verbrennungsanlagen

Publications (3)

Publication Number Publication Date
EP0352619A2 EP0352619A2 (fr) 1990-01-31
EP0352619A3 EP0352619A3 (fr) 1991-08-07
EP0352619B1 true EP0352619B1 (fr) 1994-11-02

Family

ID=6359912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113258A Expired - Lifetime EP0352619B1 (fr) 1988-07-29 1989-07-19 Méthode de régulation de la puissance de combustion pour installations de combustion

Country Status (4)

Country Link
US (1) US4981087A (fr)
EP (1) EP0352619B1 (fr)
JP (1) JP3145998B2 (fr)
DE (1) DE3825933A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667134B1 (fr) * 1990-09-24 1995-07-21 Pavese Guy Procede d'amelioration de la combustion pour bruleur a air souffle et moyens destines a le mettre en óoeuvre.
HU212738B (en) * 1991-02-22 1996-10-28 Von Roll Ag Method for operating incinerator with grate and controlling system and incineractor for carrying out that method
US5176086A (en) * 1992-03-16 1993-01-05 Praxair Technology, Inc. Method for operating an incinerator with simultaneous control of temperature and products of incomplete combustion
DE4428159C2 (de) * 1994-08-09 1998-04-09 Martin Umwelt & Energietech Verfahren zur Regelung der Feuerung bei Verbrennungsanlagen, insbesondere Abfallverbrennungsanlagen
CH694823A5 (de) * 2000-12-08 2005-07-29 Von Roll Umwelttechnik Ag Verfahren zum Betreiben einer Müllverbrennungsanlage.
IT1402556B1 (it) * 2010-11-08 2013-09-13 Amsa S P A Societa Per Azioni Con Socio Unico Sistema di controllo del carico e della combustione, per impianti di combustione dei rifiuti.
US9655358B2 (en) * 2014-05-22 2017-05-23 Seoul Metropolitan Goverment Apparatus for repelling birds

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064780B (en) * 1979-11-23 1984-04-18 Neotronics Ltd Apparatus for measuring the efficiency of combustion appliances
JPS5845411A (ja) * 1981-09-11 1983-03-16 Toshiba Corp 燃焼制御装置
JPS58104418A (ja) * 1981-12-16 1983-06-21 Toshiba Corp ボイラ自動燃焼制御装置
JPS58120022A (ja) * 1982-01-11 1983-07-16 Kawasaki Steel Corp 加熱炉の燃焼制御方法
JPS5984022A (ja) * 1982-11-08 1984-05-15 Ebara Corp 都市ごみ焼却設備の運転方法
JPS59119111A (ja) * 1982-12-24 1984-07-10 Yokogawa Hokushin Electric Corp ボイラのガスｏ↓２制御装置
JPS59164823A (ja) * 1983-03-10 1984-09-18 Mitsubishi Heavy Ind Ltd 移動床ドラム形石炭焚ボイラ
JPS59212620A (ja) * 1983-05-16 1984-12-01 Toshiba Corp 燃焼排気ガス中の酸素濃度制御方法
JPS60232421A (ja) * 1984-05-01 1985-11-19 Ishikawajima Harima Heavy Ind Co Ltd 加熱炉への燃料供給量の制御方法
JPS62206319A (ja) * 1986-03-04 1987-09-10 Yamamoto Seisakusho:Kk バ−ナの空燃比制御装置
US4742783A (en) * 1987-08-06 1988-05-10 Phillips Petroleum Company Incinerator combustion air control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J. Martin, W. Methfessel, Forschung Aktuell, Nr. 16-17/Jahrgang 4, "Anwendung moderner Steuerungs- und Automatisierungstechnik in Müllverbrennungsanlagen", November 1987, TU Berlin. *

Also Published As

Publication number Publication date
EP0352619A2 (fr) 1990-01-31
DE3825933C2 (fr) 1991-12-12
JPH0278816A (ja) 1990-03-19
JP3145998B2 (ja) 2001-03-12
US4981087A (en) 1991-01-01
DE3825933A1 (de) 1990-02-01
EP0352619A3 (fr) 1991-08-07

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