EP0221799A1 - Verfahren und Einrichtung für eine Gasbrennerverbrennungsregelung eines Wärme- oder Kraftgenerators, wie eines Heizkessels oder ähnlichem um eine bestimmte Verbrennung zu erzielen - Google Patents

Verfahren und Einrichtung für eine Gasbrennerverbrennungsregelung eines Wärme- oder Kraftgenerators, wie eines Heizkessels oder ähnlichem um eine bestimmte Verbrennung zu erzielen Download PDF

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Publication number
EP0221799A1
EP0221799A1 EP86402147A EP86402147A EP0221799A1 EP 0221799 A1 EP0221799 A1 EP 0221799A1 EP 86402147 A EP86402147 A EP 86402147A EP 86402147 A EP86402147 A EP 86402147A EP 0221799 A1 EP0221799 A1 EP 0221799A1
Authority
EP
European Patent Office
Prior art keywords
gas
air
combustion
burner
mixing chamber
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.)
Withdrawn
Application number
EP86402147A
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English (en)
French (fr)
Inventor
Gérald Brunel
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.)
D'etude Et De Construction De Chaudieres E Ste
Original Assignee
D'ETUDE ET DE CONSTRUCTION DE CHAUDIERES EN ACIER SECCACIER Ste
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
Priority claimed from FR8514605A external-priority patent/FR2588061B1/fr
Priority claimed from FR8607754A external-priority patent/FR2599472B2/fr
Application filed by D'ETUDE ET DE CONSTRUCTION DE CHAUDIERES EN ACIER SECCACIER Ste filed Critical D'ETUDE ET DE CONSTRUCTION DE CHAUDIERES EN ACIER SECCACIER Ste
Publication of EP0221799A1 publication Critical patent/EP0221799A1/de
Withdrawn legal-status Critical Current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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific

Definitions

  • the invention relates to a method and an installation for reversing the combustion of a burner or a boiler or the like, in order to obtain a determined combustion.
  • solid electrolyte probes which provide a step-shaped output voltage, the vertical part of which corresponds to stoichiometric combustion, the upstream part corresponding, for example, to a reducing atmosphere and the a ⁇ al part to a oxidizing atmosphere.
  • Such a probe makes it possible to regulate a combustion for a stoichiometric mixture, because there is a sudden change at the outlet of the probe as soon as the gold leaves the stoichiometry slightly.
  • the object of the present invention is to create an installation allowing precise adjustment. stoichiometric combustion or in an oxidizing or reducing atmosphere with simple, effective and reliable means.
  • the fumes envisaged above for the sampling are always a mixture of gas and air, whether or not there has been combustion. It can also be the oxidizing mixture made upstream of the burner flame.
  • the reference mixture is a stoichiometric mixture.
  • sample fluid samples can be taken discontinuously, it is advantageous to take them continuously.
  • the method and the installation according to the invention are distinguished by the simplicity of their realization and, consequently, their low cost and the multiple possibilities of adaptation thus offered.
  • the method and the installation according to the invention are particularly reliable because they are not subject to temperature drift of the probe. Since, in the majority of cases, the invention contemplates the detection of the stoichiometric level in the mixing chamber which, in general, is a combustion chamber, the control of the air and gas flow (s) is reliable in time.
  • the response time of the control system is very short, especially at low engine speeds, when the gas and combustion air samples are taken upstream of combustion.
  • the assembly constituted by a burner and the regulating installation is a compact assembly, satisfying all the space requirements imposed on a boiler or a heat or force generator.
  • the probe is a probe that can easily detect an oxidizing state or a reducing state, such as an electrochemical probe, for example a zirconia probe.
  • the fixed adjustment means are diaphragms or adjustment valves.
  • the mixing chamber of the sample mixture is a combustion chamber comprising either a catalyst element for the combustion of the sample mixture, with possibly a preheating resistance, either an ignition resistance, or an electric arc.
  • the burner is blown air and the hearth generally works under pressure and the mixing chamber is connected, on the one hand, to the outlet of the fan supplying combustion air to the burner and, on the other hand, to the gas supply and exhaust pipe is connected to the fireplace or to the chimney outlet or to ambient air if the fireplace is of low pressure.
  • the hearth and the mixing chamber work under vacuum, the burner being of the atmospheric type, and the combustion air intake for the chamber takes place through an orifice calibrated according to the inlet of air in the fo) er, the gas sampling being carried out by a gas supply pipe and the evacuation is connected to the hearth or to the chimney outlet.
  • the mixing chamber is connected to the gas supply pipe and to the smoke outlet to supply air and equivalent gas, and the evacuation goes to the smoke outlet .
  • the mixing chamber is connected to the outlet of the blowing machine supplying the burner and to the outlet of fumes to supply equivalent air and gas and the evacuation goes to the outlet of fumes.
  • the combustion chamber comprises an air inlet calibrated as a function of the air inlet of the burner of the hearth working under vacuum like the chamber and an inlet of gas and air connected to smoke (smoke outlet or boiler).
  • the installation includes a means for modifying the temperature. erasure of at least one of the sample fluids, upstream of the adjustment member (s) and, consequently, of the corresponding coefficient (Ka-Kg).
  • the invention also relates to an installation of the above type, characterized in that the mixing chamber into which the air pipe and the gas pipe opens, comprises at the outlet of these two pipes, a flame stabilization means such as a flame stabilization grid upstream of the ignition means of the gas mixture and at a sufficient distance from it so that the flames of the combustion of the gas mixture on the grid do not reach the ignition means .
  • a flame stabilization means such as a flame stabilization grid upstream of the ignition means of the gas mixture and at a sufficient distance from it so that the flames of the combustion of the gas mixture on the grid do not reach the ignition means .
  • This flame stabilization grid hooks the flame into the mixing chamber, preventing this flame from being fixed on the ignition means and prematurely damaging it.
  • the ignition means is an electrical resistance.
  • the combustion of the mixture in the mixing chamber is particularly stable if, according to another characteristic, this chamber is surrounded by a means of thermal insulation. This prevents variable heat losses, depending on the conditions outside the mixing chamber, from affecting the quality of combustion in the mixing chamber.
  • the installation includes a temperature sensor connected to a control circuit controlling the use of the ignition means as a function of the state of combustion (temperature) prevailing inside the mixed.
  • This sensor thus makes it possible to detect the presence of combustion on the grate and to stop or to reduce at this time the electrical supply of the ignition means, for example of the resistance, to avoid any rise in temperature thereof, detrimental to the behavior and the life of this ignition means.
  • the senor is a thermocouple with one wire, the other wire of which is grounded.
  • the invention also relates to an installation characterized in that it comprises a pipe, one end of which opens into the hearth at the base of the burner flame and the other end of which arrives in the mixing chamber into which the pipe of air and gas line to ignite the mixture.
  • This ignition mode is particularly simple since it is always done when the burner flame is lit.
  • the method of the invention aims to regulate the combustion of a gas burner in a boiler or the like to obtain a determined combustion, that is to say combustion in a reducing atmosphere or combustion in an oxidizing atmosphere.
  • this combustion is stoichiometric, in other cases, it must be done with an excess of air or a lack of air depending on the combustion to be done.
  • the proportionality coefficients (ka, kg) are determined (C) by the following relationships: and the flow rates are expressed in standard volumes (reference temperature and pressure) (N) m 3 .
  • the coefficients ka and kg are constants. These constants are equal if the combustion in the boiler burner must be done with a stoichiometric oxidizing mixture; these constants are different if the conditions are not stoichiometric, that is to say if they are reducing or oxidizing.
  • the different quantities Qath, Qgth, Da, Dg, ka, kg are obtained by calculation and / or measurement.
  • the above case corresponds to the sampling of gas in the gas stream and of air in the air stream each supplying the burner of the boiler or the like.
  • the sampling of gas or combustion air is carried out in the flue gases, so that it is then necessary to determine, under conditions analogous to those set out above, the coefficient of proportionality between the sampling and the smoke stream in which the sample is taken so that, when the combustion in the burner corresponds to the theoretical combustion, the sample is a stoichiometric mixture.
  • the samples Da, Dg are mixed to obtain a sample mixture which is optionally burned. Then we analyze (F) the mixture or if there is combustion, the fumes. This analysis makes it possible to determine if the sample mixture is too rich, too poor or if it is stoichiometric.
  • the result of the analysis is used to control (C) the flows of gas and / or of air oxidizing Qg and Qa and to control them with the theoretical values Qgth and Qath.
  • gas and air (or smoke) samples can be taken discontinuously, for example by sampling, periodically, it is advantageous to take these samples continuously.
  • FIG. 2 is an overall diagram of an installation for implementing the method.
  • the hearth 1 comprises a burner 2 which is connected to a gas supply 3 and a combustion air supply 4.
  • the gas supply 3 can be closed by a valve 5, preferably a solenoid valve; the air supply is either a natural vacuum supply or a forced supply by a fan.
  • This supply can be stopped by the device 6 represented generally and symbolically by a rectangle.
  • the fireplace has a smoke outlet 7 which opens into the atmosphere.
  • the installation according to the invention consists of a mixing chamber 8 connected by a pipe 11 to the gas supply pipe 3 via a flow control member 12.
  • the combustion chamber 8 is also connected by a line 9 provided with a flow control device 10 to the air supply line 4 (or to what can take the place of supply of combustion air to the burner or the hearth).
  • the mixing chamber 8 is connected by a pipe 13 provided with a flow control member 18 to the smoke outlet pipe 7.
  • the mixing chamber 8 thus receives the sample mixture formed by the sampling of gas and of oxidizing air to optionally carry out a combustion favored by an element 14 such as a catalyst, an ignition resistance, for example made of molybdenum disulphide or in. silicon carbide, or an electric arc.
  • the chamber 8 includes a probe 15 for detecting the mixture or the fumes in its outlet 16 which opens directly into the atmosphere or into the hearth or into the flue 7 of the boiler.
  • the probe 15 is connected to a processing and control circuit 17 which receives the detection signal supplied by the detector 15 and forms a control signal 5 1 intended to control the gas supply member 5 and a signal S 2 intended to control the oxidizing air supply member 6.
  • Figure 2 shows the general diagram of the installation. It is clear that only one of the three possibilities for sampling gas and combustion air is used depending on the nature of the combustion in the hearth 1.
  • the gas sampled and feeding the combustion detected by the detector 15 can be done either by sampling by a nozzle on the pipe 3, either in the smoke, via the pipe 13.
  • combustion air which can be supplied directly from the combustion air supply line 4 (or from what takes the place of the combustion air supply line) or even from the flue gases. via line 13.
  • the pipe 11 for supplying the chamber 8 with oxidizing air represents different possibilities, namely first of all a pipe actually opening into the supply pipe 4 or into the fan which supplies the burner. In this case it is a combustion with a pressure hearth and / or a supply air burner.
  • the hearth is under vacuum and it is possible in this case, to supply the combustion air to the hearth via orifices of the wall and atmospheric air enters the hearth.
  • the pipe 9 is replaced by an orifice calibrated so as to allow a proportional supply of the chamber 8 with combustion air.
  • the regulating members 10, 12, 18 make it possible to adjust the coefficient of proportionality between the flow of gas in the pipe 3 and the flow of withdrawn gas passing through the pipe 11.
  • the same is true of the adjusting members 10, 16.
  • the adjustment member 10 does not exist and the adjustment is carried out by simple calibration of the air inlet orifice in the chamber 8 with respect to the dimension of the air inlet in the burner 2 or more generally in the hearth.
  • FIG. 3 schematically shows an installation according to the invention, intended for a hearth 1 generally working under pressure (due to the air supply provided by the fan 6A).
  • This fireplace can be adjusted to ensure combustion with excess air or for combustion with air defect.
  • the adjustment installation according to the invention consists of an air line 9 connected to the line 4A (shown diagrammatically) connecting the blowing machine 6A to the burner 2.
  • This line 9 comprises a proportionality adjusting member 10.
  • L gas supply to the chamber 8 is provided by a pipe 11 connected to the gas supply pipe 3 to the burner 2.
  • This pipe 11 also includes a member 12 for adjusting the proportionality between the flow of gas in the pipe 11 and gas flow in line 3.
  • FIG. 4 shows a combustion regulation installation applied to a hearth 1 operating under vacuum.
  • This burner 2 works under vacuum, that is to say that the combustion fumes are sucked from the hearth either by natural draft or by forced suction (not shown).
  • the burner is supplied with gas via line 3 provided with the flow control member (solenoid valve 5).
  • This gas sampling pipe 11 includes a proportionality adjusting member 12 and it opens into the combustion chamber 8.
  • the air supply to the burner 2 or to the hearth 1 is provided by a calibrated opening 6B, the air being sucked in by the vacuum prevailing in the hearth 1.
  • the mixing chamber 8 has a calibrated opening 9B whose calibration is related to the calibration of the opening 6B so as to obtain the desired proportionality between the air drawn into the hearth 1 and the air drawn into the mixing chamber 8.
  • the mixing chamber 8 optionally includes an element 14 for combustion and a probe 15 detecting the mixture or combustion fumes.
  • This probe 15 is connected to a processing and control circuit 17 which controls the valve 5.
  • FIG. 5 shows a diagram of an installation according to the invention, applied to a hearth 1, working under pressure or under vacuum, the burner 2 of which receives blown air or air at atmospheric pressure.
  • the adjustment installation consists of a pipe 11 for sampling gas, connected to the pipe 3 for supplying gas to the burner 2.
  • This pipe 11 is equipped with a flow proportionality adjusting member 12; it opens into the mixing chamber 8.
  • a supply of combustion air and gas to the mixing chamber 6 is ensured by means of the pipe 13 which opens into the flue pipe 7 and carries out the sampling of fumes therefrom.
  • the connection of the pipe 13 in the flue pipe 7 is preferably a connection of total pressure (static pressure + dynamic pressure).
  • the installation also includes a catalyst or an ignition resistance or an electric arc 14 to promote combustion in the mixing chamber 8 and a probe 15 placed at the outlet of the mixing chamber 8 to provide a signal relating to combustion at the processing and control circuit 17 which supplies the control signal to the solenoid valve 5, as regulating the gas supply to the burner 2.
  • FIG. 6 shows the diagram of a regulation installation with a hearth 1 generally in pressure, supplied by a blowing machine 6C in combustion air.
  • the hearth 1 operates with a reductive combustion.
  • the regulation installation consists of an air sampling line 9 provided with a proportionality adjusting member 10 and opening into the line 4 supplying the burner 2 by the blowing machine 6C.
  • This pipe 9 opens into the mixing chamber 8.
  • This chamber is also connected by a pipe 13 with an adjusting member 18 to the flue pipe 7 in which an equivalent sample of gas and air is thus taken.
  • the combustible mixture thus obtained in the mixing chamber 6 is preferably burnt thanks to the catalyst 14 and the fumes are detected by a probe 15 which transmits a signal corresponding to the processing and control circuit 17 providing a control signal S 2 to the 6C blower to regulate combustion.
  • FIG. 7 shows an alternative embodiment of a fuel regulation installation applied to a furnace 1 under vacuum with an atmospheric burner supplied with combustion air by an air intake 6D and gas by the pipe 3.
  • the regulation installation is made up of the mixing chamber 8 equipped with a catalyst 14 and a probe 15 connected to a treatment and control circuit 17.
  • the chamber 8 is supplied with gas and equivalent air by line 13 or regulating member 16 connected to the flue pipe 7.
  • This pipe 13 makes it possible to treat equivalent gas in the flue gases of pipe 7.
  • the supply of combustion air to chamber 8 takes place via an orifice. calibrated 9D.
  • the combustion chamber 6 thus works in vacuum; depression is ensured either by connecting the smoke outlet 16 to the smoke outlet 7, itself in depression, or by connecting this outlet 16 to a separate chimney.
  • connection of the pipe 13 into the smoke outlet is a total intake (static pressure dynamic pressure) while the discharge pipe 16 opens into the smoke outlet by a static pressure connection; the sampling of the fumes through the pipe 13 is therefore done with the dynamic pressure through the member 18.
  • the sampling and rejection tubes are produced, depending on the case, as static (perpendicular to the fluid) or dynamic (longitudinally to the fluid) pressure taps or any intermediate combination.
  • the sampling tubes are fitted with filters and solenoid valves. When combustion is stopped, these solenoid valves allow gas tightness if necessary and an air rinse of the mixing chamber and the probe, after combustion.
  • these solenoid valves allow gas tightness if necessary and an air rinse of the mixing chamber and the probe, after combustion.
  • this heating means is an electrical resistance or a conduction means * that extracts heat in the mixing chamber when the latter works in combustion.
  • This resistance may be of constant power, the air or gas sampling rate varying with the power, so that the temperature of the fluid upstream of the regulating member will vary inversely.
  • the mixing chamber 106 is surrounded by an enclosure 123 in particular insulated or constituting the housing in which is made the mixing chamber 108.
  • This mixing chamber 108 can be constituted by the assembly of tubes or even by holes made in a block, in particular a block of refractory material.
  • This block is surrounded, as indicated above, preferably with an insulation material 123.
  • the air line 109 and the gas line 111 open into this chamber 108 below a grid 120 used for attaching the combustion flame of the air-gas mixture.
  • an ignition means 114 constituted, for example, by a electrical resistance connected through a support 124 to an electrical control circuit 122.
  • a temperature probe 121 is placed below the ignition means 114 at the flame level, above the grid 120 so as to detect the presence of flame.
  • This probe 121 is connected to the circuit 122 to control the cutting or reduction of the electrical supply to the ignition means 114 when the flame is lit; or vice versa to control the use of the electrical resistance 114 when the flame is extinguished and the appliance is operating.
  • the probe 115 In the pipe above the grid 120 and the ignition means 114 is the probe 115.
  • the combustion fumes are evacuated by the pipe 116.
  • the senor 121 is a thermocouple with a wire connected to the control circuit 122, the other wire of the sensor being grounded.
  • FIG. 9 shows a variant of the ignition means according to the invention.
  • the ignition means consists of a pipe 205, the end 205a of which opens above the flame 204 of the burner 203, the other end of this pipe or small tube 205b opening into the mixing chamber 208.
  • This mixing chamber is connected by the line 209 to the air supply and via line 211 to the gas supply to the burner.
  • Line 205 allows the mixture of chamber 208 to be ignited by raising the flame, without requiring special means such as an electric ignition device or a catalyst, although such means may be provided in a complementary manner.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
EP86402147A 1985-10-02 1986-10-01 Verfahren und Einrichtung für eine Gasbrennerverbrennungsregelung eines Wärme- oder Kraftgenerators, wie eines Heizkessels oder ähnlichem um eine bestimmte Verbrennung zu erzielen Withdrawn EP0221799A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8514605 1985-10-02
FR8514605A FR2588061B1 (fr) 1985-10-02 1985-10-02 Procede et installation pour reguler la combustion d'un bruleur a gaz d'un generateur de chaleur ou de force tel qu'une chaudiere ou analogue, pour obtenir une combustion determinee
FR8607754 1986-05-29
FR8607754A FR2599472B2 (fr) 1986-05-29 1986-05-29 Procede et installation pour reguler la combustion d'un bruleur a gaz d'un generateur de chaleur ou de force tel qu'une chaudiere ou analogue, pour obtenir une combustion determinee

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EP0221799A1 true EP0221799A1 (de) 1987-05-13

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EP86402147A Withdrawn EP0221799A1 (de) 1985-10-02 1986-10-01 Verfahren und Einrichtung für eine Gasbrennerverbrennungsregelung eines Wärme- oder Kraftgenerators, wie eines Heizkessels oder ähnlichem um eine bestimmte Verbrennung zu erzielen

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642507A1 (fr) * 1989-02-01 1990-08-03 Brunel Gerald Dispositif de controle de la combustion d'un bruleur
EP0829683A3 (de) * 1996-09-12 1999-03-10 Mitsubishi Denki Kabushiki Kaisha Verbrennungssystem und Steuerverfahren zu seinem Betrieb
WO2012167914A3 (de) * 2011-06-10 2014-05-08 Vdeh-Betriebsforschungsinstitut Gmbh Vorrichtung zur oxidation der oxidierbaren anteile einer brenngasprobe zur qualitätsbestimmung des brenngases

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016884B (de) * 1955-02-14 1957-10-03 Keram Ind Bedarfs K G Vorrichtung zur Beurteilung der Ofenatmosphaere fuer Brennoefen, insbesondere Tunneloefen
GB1565310A (en) * 1977-12-01 1980-04-16 Battelle Development Corp Method and apparatus for controlling fuel to oxidant ratioof a burner
GB2036290A (en) * 1978-11-22 1980-06-25 Hamworthy Engineering Fuel sampling system
DE3408397A1 (de) * 1984-03-08 1985-09-19 Ruhrgas Ag, 4300 Essen Verfahren und anordnung zur bestimmung des mischungsverhaeltnisses eines ein sauerstofftraegergas und einen brennstoff enthaltenden gemisches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016884B (de) * 1955-02-14 1957-10-03 Keram Ind Bedarfs K G Vorrichtung zur Beurteilung der Ofenatmosphaere fuer Brennoefen, insbesondere Tunneloefen
GB1565310A (en) * 1977-12-01 1980-04-16 Battelle Development Corp Method and apparatus for controlling fuel to oxidant ratioof a burner
GB2036290A (en) * 1978-11-22 1980-06-25 Hamworthy Engineering Fuel sampling system
DE3408397A1 (de) * 1984-03-08 1985-09-19 Ruhrgas Ag, 4300 Essen Verfahren und anordnung zur bestimmung des mischungsverhaeltnisses eines ein sauerstofftraegergas und einen brennstoff enthaltenden gemisches

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
INSTRUMENTS & CONTROL SYSTEM, vol. 49, no. 6, juin 1976, pages 25-32, Radnor, P.A., US; R.T. KELLER et al.: "New control system + one boiler X multiple fuels = lower costs" *
MODERN POWER AND ENGINEERING, vol. 51, no. 12, décembre 1957, pages 78,79, Toronto, CA: "Cromby controls efficiency on basis of O2" *
PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 80, section M, 24 juin 1978, page 2032 M 7810; & JP-A-53 47 035 (SHIN NIPPON SEITETSU K.K.) 27-04-1978 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642507A1 (fr) * 1989-02-01 1990-08-03 Brunel Gerald Dispositif de controle de la combustion d'un bruleur
EP0381581A2 (de) * 1989-02-01 1990-08-08 Societe D'etude Et De Construction De Chaudieres Automatiques En Acier Seccacier Einrichtung für eine Brennerverbrennungsregelung
EP0381581A3 (de) * 1989-02-01 1991-03-27 Societe D'etude Et De Construction De Chaudieres Automatiques En Acier Seccacier Einrichtung für eine Brennerverbrennungsregelung
EP0829683A3 (de) * 1996-09-12 1999-03-10 Mitsubishi Denki Kabushiki Kaisha Verbrennungssystem und Steuerverfahren zu seinem Betrieb
US5957063A (en) * 1996-09-12 1999-09-28 Mitsubishi Denki Kabushiki Kaisha Combustion system and operation control method thereof
WO2012167914A3 (de) * 2011-06-10 2014-05-08 Vdeh-Betriebsforschungsinstitut Gmbh Vorrichtung zur oxidation der oxidierbaren anteile einer brenngasprobe zur qualitätsbestimmung des brenngases

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