EP0661499A1 - Echtzeitregelung eines Brenner für Brenngase mit underschiedlichen Eigenschaften, insbesondere für metallurgischen Ofen zum Wärmen - Google Patents

Echtzeitregelung eines Brenner für Brenngase mit underschiedlichen Eigenschaften, insbesondere für metallurgischen Ofen zum Wärmen Download PDF

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Publication number
EP0661499A1
EP0661499A1 EP94470038A EP94470038A EP0661499A1 EP 0661499 A1 EP0661499 A1 EP 0661499A1 EP 94470038 A EP94470038 A EP 94470038A EP 94470038 A EP94470038 A EP 94470038A EP 0661499 A1 EP0661499 A1 EP 0661499A1
Authority
EP
European Patent Office
Prior art keywords
combustion
burner
fuel
content
pco
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.)
Granted
Application number
EP94470038A
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English (en)
French (fr)
Other versions
EP0661499B1 (de
Inventor
Serge Silvestrini
Jean-Claude Dieuloufet
Philippe Domini
Patrick Hug
Gérard Griffay
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0661499A1 publication Critical patent/EP0661499A1/de
Application granted granted Critical
Publication of EP0661499B1 publication Critical patent/EP0661499B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/52—Methods of heating with flames
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/16—Spectrometer burners

Definitions

  • the present invention relates to a method and a device for real-time adjustment of a burner supplied with a fuel with variable characteristics.
  • This gaseous mixture is produced in principle to obtain thermal properties of a determined level, such as the PCI (Lower Calorific Power), the PCO (Comburivorous Power) which is deduced therefrom, or the Wobbe index for example.
  • the composition of the gaseous mixture can undergo fluctuations resulting from variations in the operation of the reactors which supply the components.
  • the hydrogen content fluctuates quite commonly, because the different sources of supply of this gas mixture do not have a constant composition over time.
  • these compositions fluctuate, a slight change, in particular in the composition of the coke oven gas (which is rich in hydrogen) has appreciable repercussions on its PCO among other things.
  • the latter must be known permanently with good precision if one wishes in particular to ensure a determined temperature in the enclosure of the reheating oven, which can also be modified by adjusting the combustion air flow. with which the burners are fitted.
  • the content of impurities, in particular sulfur fluctuates for the same reasons over time, which causes fluctuations in the composition, in particular in sulfur oxides, of the combustion gases and, therefore, of the atmosphere of the reheating ovens.
  • the problem therefore consists in controlling the combustion of a gaseous mixture, moreover charged with dust, and the characteristics of which can quickly vary randomly around average values (lower calorific value, comburivorous power, density, sulfur content, etc. ..).
  • the problem also consists in controlling the mixing of the different co-produced combustible gases, the impurity contents of which are generally very different, so that the content of impurities, in particular sulfur oxides, in the atmosphere of the reheating furnaces is constant or be kept below a predetermined limit.
  • the invention aims to provide a system capable of solving the problems posed while eliminating the above drawbacks of the known prior devices.
  • This instruction is advantageously a "correction coefficient" of the combustion air flow rate calculated from the instantaneous actual measured PCO / standard PCO ratio, this standard PCO being that corresponding to the standard composition of the fuel around which the real composition is likely to fluctuate.
  • said quantity measured is the content of sulfur oxides in the fumes and action is taken on the adjustment of the burner supply by modifying the mixing proportions of said fuels to maintain said sulfur oxide content in the vicinity of said predetermined reference value.
  • the adjustment means make it possible to control the flow of fuel and the flow of combustion air and the calculation unit evaluates the actual instantaneous thermal properties of the fuel.
  • the adjustment means make it possible to control the proportions of the mixture of combustibles and the means for measuring said representative quantity are a probe for measuring the content of sulfur oxides in the fumes.
  • the invention thus provides to supply the correctometer burner disposed at the end of the combustion tunnel with air and fuel regulated at controlled flow rates, and to correlate in a simple manner the quantity measured with the real-time adjustment of the supply of the reheating oven burners.
  • the instantaneous variations of a fuel property, such as its PCO or its impurity content, caused by fluctuations in its composition are measured to determine, and apply instantly, the corrections to be made to the fuel. burner supply.
  • the correction is applied to the flow rate of combustion air entering the furnace burner (s), to allow the power delivered by this burner to be kept constant, despite the hazards of the combustible PCO which supplies it.
  • the correction is applied to the mixture of combustibles, to enable the content of sulfur-containing impurities in the atmosphere of the atmosphere to be maintained in the vicinity of a predetermined reference value.
  • metallurgical furnace when the fuel is an adjustable mixture, the correction is applied to the mixture of combustibles, to enable the content of sulfur-containing impurities in the atmosphere of the atmosphere to be maintained in the vicinity of a predetermined reference value.
  • the invention solves the problem posed by means of a simple, economical and robust system, not very sensitive to the environment, requiring only reduced maintenance and a very low operating cost.
  • the burner used is capable of developing a power of at least 100 th / h, otherwise the quantity measured cannot be correctly evaluated in the fumes and the invention. produces results that cannot be used industrially.
  • the installation shown diagrammatically in FIG. 1 comprises a metallurgical furnace M for reheating steel semi-finished products, for example steel slabs, equipped, in known manner, with one or more burners 1, supplied with combustible gas (g ) from a source of gaseous fuel 2 by means of a gas flow control 3 controlled by a setpoint Co given by the driver of the heating furnace M.
  • the combustion air inlet (a) in the burner 1 is controlled by a flow control 4 connected to the atmosphere by an external outlet F5.
  • the air flow (a) is continuously adjusted to the gas flow (g) using a setpoint signal C1 which the gas control 3 sends to the air control 4. This makes it possible to adjust the heating power of the burners while ensuring that the conditions of complete combustion are respected.
  • the "correctometer” 5 takes its place in this assembly between the gas source 2 and the air flow control 4.
  • This correctometer 5 essentially consists of a furnace-comburimeter 6 and a calculation unit 10.
  • the comburimeter 6 comprises, as will be seen in more detail below, a mini-burner 7 with a nominal power of at least 100 th / h and opening into a combustion chamber 8 in the form of a tunnel, provided at its other end with the sensor of a probe analyzer 9.
  • the burner (preferably at high pulse to promote obtaining homogeneous fumes) receives on an input a constant and perfectly controlled mass flow of combustible gas F2, coming from source 2 and, on its other inlet, a corresponding flow of external oxidizing air F1 also under a constant and perfectly known mass flow, but in excess compared to requirements stoichiometric combustion of the gas flow F2.
  • the combustion tunnel 8 is open at its end opposite that of the burner 7 to allow evacuation to the atmosphere F3 (or else in the reheating furnace M itself) of the combustion products.
  • the latter are analyzed before evacuation by the probe 9 which determines the content of free oxygen.
  • the measurement by the probe 9 of the residual O2 in the combustion products reflects, as will be seen, the difference in stoichiometry.
  • the value of this measurement is used by the computer 10 to determine a thermal characteristic of the gas, taken in its real state, like its instantaneous PCO, and to develop a signal C2, here in the form of a correction coefficient to be applied to the flow rate setpoint. of air (a) of control 4, which is set to the standard PCO value of the gas to be burned.
  • the quantity representative of the deviation from stoichiometry may be other than the residual oxygen content in the flue gases after complete combustion, these measurements being carried out by probes known per se and which do not require a more detailed description to be understood and put implemented by the skilled person.
  • the variations in the composition of the gas cause correlative and immediate fluctuations in the magnitude representative of the difference in stoichiometry corresponding to these variations during combustion with excess. of air.
  • the fluctuations of this representative quantity in real time, it is possible to deduce therefrom, knowing the flow rates of combustion air and combustible gas in the comburimeter, the fluctuations in the composition of the combustible gas.
  • a simple calculation giving its instantaneous PCO value, it is therefore possible to adjust in real time the set value of control 4 of the combustion air inlet flow rate in the burners of the reheating oven, in order to maintain in the latter the conditions of a desired stoichiometric or other combustion.
  • the instantaneous real PCO (or the correlative correction coefficient which is used to act on the command setpoint 4) can be determined either by calculation, or by reading of pre-established charts with the same relative air flows and gases for different values of the representative quantity.
  • the burners of the reheating oven are set for a given standard PCO of the gas to be burned.
  • the combustion air flow is adjusted to this standard PCO to ensure desired combustion, even when varies the flow of combustible gas, for example to modify the temperature of the oven by acting on the calorific power delivered by the burners. It is therefore necessary, in order to maintain the desired quality of combustion, that the flow of oxidizing air (a) instantly follows the possible modifications that are imposed by the setpoint Co on control 3 of the flow of gas to be burned (g).
  • the correctometer 5, according to the invention intervenes at the 2nd, finer level, to correct the effects of fluctuations in the composition of the gas which modify its thermal properties, for example its real PCO without being immediately aware of it. .
  • Figure 2 shows an embodiment of the comburimeter oven 6 according to the invention.
  • This device comprises the combustion tunnel chamber 8, of sufficient length so that the combustion of the gas, initiated at one end, is completed at the opposite end, and the mini-burner 7 provided at one end of the tunnel 8.
  • Devices not shown allow the mass flow of gas to be adjusted to a predetermined value. constant as well as the combustion air flow.
  • the tunnel 8 is thermally insulated by means of two superimposed layers 14 and 15 of insulation interposed between the wall of the combustion chamber 8 and the outer casing 16 of the comburimeter 6.
  • a probe analyzer 9 for measuring the residual oxygen content of the combustion fumes passes through the casing 16 and the two layers of insulation 14, 15.
  • the combustion chamber 8 has in practice a length of about one meter, not much more, but in any case sufficient to ensure that combustion is completed at the level of the probe 9, which is for example a zirconium probe of the type known.
  • the characteristics of the gas are likely to fluctuate around those of the gas taken in its standard state.
  • the installation is identical to that previously described, except that the source of gaseous fuel 2 is an adjustable mixer supplied with several gaseous fuels co-produced in different reactors of a steel plant.
  • Gaseous fuels contain different levels of sulfur impurities depending on the type of reactor from which they come.
  • the value of the sulfur content of each gaseous fuel is known on average, by means of analysis known in themselves.
  • the "correctometer” 5 according to the invention is as previously supplied by the source 2 which is an adjustable mixer and sends an adjustment instruction to said mixer.
  • the "correctometer" 5 is identical to the previously described correctometer, except that the probe 9 measures the sulfur oxide content of the combustion gases from the burner 7.
  • the value of this measurement is used by the computer 10 to determine the setpoint to be sent with the gaseous fuel mixer, in order to maintain said sulfur oxide content in the vicinity of a predetermined reference value.
  • the computer 10 evaluates said setpoint as a function, in particular, of the known average sulfur levels of each gaseous fuel.
  • the advantage of the method according to the invention is that the result of the measurement does not depend on possible interactions in different combustion zones of the installation, does not depend on unexpected air inlets in the installation, emissions or possible absorption by steel products placed in the furnace.
  • the invention allows not only to optimize the operation of the burners 1 of the oven, but also to control the atmosphere of the oven, which has a decisive advantage. Indeed, like the sulfur character of this atmosphere, the more or less oxidizing character has a decisive influence on the quality of the rolled products. If the burner's operation is not sufficiently controlled, a drop, for example, in the hydrogen content in the combustible gas mixture will lead to an increase in the excess air in the combustion fumes, therefore in the atmosphere of the oven . This excess of combustion air, not only will modify the heating temperature, but above all, by the corresponding increase in the O2 content of the furnace atmosphere, has a detrimental influence on the metallurgical quality of the products obtained after rolling, far downstream.
  • the method and the device according to the invention have the essential advantage of making it possible in real time to modify the supply regulation set point for the burners of the oven, which was not possible with the prior techniques recalled at the start.
  • the composition of the furnace atmosphere is therefore checked instantly.
  • the invention also allows very precise counting of the thermies used by the burners 1 whatever the variations in the characteristics of the fuel used.
  • the method and the device according to the invention make it possible to carry out measurements (in particular oxygen and sulfur content, flow rate, pressure, etc.) in a very accessible, in places far from the heating enclosure and by easily removable devices for possible maintenance.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Control Of Combustion (AREA)
EP94470038A 1993-11-26 1994-11-18 Echtzeitregelung eines Brenner für Brenngase mit unterschiedlichen Eigenschaften, insbesondere für metallurgischen Ofen zum Wärmen Expired - Lifetime EP0661499B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314357A FR2712961B1 (fr) 1993-11-26 1993-11-26 Réglage en temps réel d'un brûleur à combustible de caractéristiques variables, notamment pour four métallurgique de réchauffage.
FR9314357 1993-11-26

Publications (2)

Publication Number Publication Date
EP0661499A1 true EP0661499A1 (de) 1995-07-05
EP0661499B1 EP0661499B1 (de) 1999-01-13

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EP94470038A Expired - Lifetime EP0661499B1 (de) 1993-11-26 1994-11-18 Echtzeitregelung eines Brenner für Brenngase mit unterschiedlichen Eigenschaften, insbesondere für metallurgischen Ofen zum Wärmen

Country Status (9)

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EP (1) EP0661499B1 (de)
KR (1) KR950014318A (de)
AT (1) ATE175764T1 (de)
BR (1) BR9404753A (de)
DE (1) DE69415954D1 (de)
FR (1) FR2712961B1 (de)
TR (1) TR28665A (de)
TW (1) TW256874B (de)
ZA (1) ZA949323B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785668A1 (fr) * 1998-11-10 2000-05-12 Air Liquide Procede de chauffage d'un four a chargement continu notamment pour produits siderurgiques, et four de chauffage a chargement continu
FR2953280A1 (fr) * 2009-11-30 2011-06-03 Fives Stein Procede de correction des reglages de combustion d'un ensemble de chambres de combustion et installation mettant en oeuvre le procede
CN109307437A (zh) * 2018-09-21 2019-02-05 厦门大学嘉庚学院 一种蓄热式工业加热炉的优化燃烧控制系统及其方法
CN115354142A (zh) * 2022-08-18 2022-11-18 重庆赛迪热工环保工程技术有限公司 加热炉燃烧控制方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316560B1 (ko) * 1999-04-19 2001-12-12 김은규 폐식용유를 이용한 비누의 제조장치
TWI372023B (en) 2008-12-10 2012-09-01 Asustek Comp Inc Electronic apparatus and thermal dissipating module thereof
FR3045783B1 (fr) * 2015-12-17 2019-08-16 Fives Stein Module de controle electronique et procede de controle du fonctionnement et de la securite d'au moins un bruleur a tube radiant
IT202100020177A1 (it) * 2021-07-28 2023-01-28 Siti B & T Group Spa Impianto per bruciatori in forni industriali

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829954A (en) * 1954-11-30 1958-04-08 Surface Combustion Corp Apparatus for analyzing gas
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
EP0055852A1 (de) * 1980-12-27 1982-07-14 Hitachi, Ltd. Methode und Einrichtung um die Verbrennung eines vergasten Brennstoffes zu regeln
EP0088717A1 (de) * 1982-03-09 1983-09-14 Arbed S.A. Verfahren zum Optimieren des Betriebes eines Ofens
DE3337476A1 (de) * 1983-10-14 1985-05-02 Ulrich Dipl.-Ing. 4048 Grevenbroich Dohle Verfahren und vorrichtung zur bestimmung und regelung des optimalen brennstoff/luft-verhaeltnisses einer feuerungsanlage
EP0156200A1 (de) * 1984-03-08 1985-10-02 Ruhrgas Aktiengesellschaft Verfahren und Anordnung zur Bestimmung des Mischungsverhältnisses eines ein Sauerstoffträgergas und einen Brennstoff enthaltenden Gemisches
DE4007635C1 (de) * 1990-03-10 1991-09-19 Vereinigte Kesselwerke Ag, 4000 Duesseldorf, De

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829954A (en) * 1954-11-30 1958-04-08 Surface Combustion Corp Apparatus for analyzing gas
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
EP0055852A1 (de) * 1980-12-27 1982-07-14 Hitachi, Ltd. Methode und Einrichtung um die Verbrennung eines vergasten Brennstoffes zu regeln
EP0088717A1 (de) * 1982-03-09 1983-09-14 Arbed S.A. Verfahren zum Optimieren des Betriebes eines Ofens
DE3337476A1 (de) * 1983-10-14 1985-05-02 Ulrich Dipl.-Ing. 4048 Grevenbroich Dohle Verfahren und vorrichtung zur bestimmung und regelung des optimalen brennstoff/luft-verhaeltnisses einer feuerungsanlage
EP0156200A1 (de) * 1984-03-08 1985-10-02 Ruhrgas Aktiengesellschaft Verfahren und Anordnung zur Bestimmung des Mischungsverhältnisses eines ein Sauerstoffträgergas und einen Brennstoff enthaltenden Gemisches
DE4007635C1 (de) * 1990-03-10 1991-09-19 Vereinigte Kesselwerke Ag, 4000 Duesseldorf, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"VOUS AVEZ DIT COMBURIMÈTRE", MESURES REGULATION AUTOMATISME, vol. 47, no. 8/9, August 1982 (1982-08-01), PARIS FR, pages 65 - 69 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785668A1 (fr) * 1998-11-10 2000-05-12 Air Liquide Procede de chauffage d'un four a chargement continu notamment pour produits siderurgiques, et four de chauffage a chargement continu
EP1001237A1 (de) * 1998-11-10 2000-05-17 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Beheizungsverfahren eines kontinuierlich arbeitenden Ofens für Stahl Produkte und kontinuierlich arbeitender Ofen
US6183246B1 (en) 1998-11-10 2001-02-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of heating a continuously charged furnace particularly for steel-making products, and continuously charged heating furnace
FR2953280A1 (fr) * 2009-11-30 2011-06-03 Fives Stein Procede de correction des reglages de combustion d'un ensemble de chambres de combustion et installation mettant en oeuvre le procede
WO2011064752A1 (fr) * 2009-11-30 2011-06-03 Fives Stein Procede de correction des reglages de combustion d'un ensemble de chambres de combustion et installation mettant en oeuvre le procede
US20120291679A1 (en) * 2009-11-30 2012-11-22 Five Stein Method for correcting the combustion settings of a set of combustion chambers and apparatus implementing the method
CN109307437A (zh) * 2018-09-21 2019-02-05 厦门大学嘉庚学院 一种蓄热式工业加热炉的优化燃烧控制系统及其方法
CN115354142A (zh) * 2022-08-18 2022-11-18 重庆赛迪热工环保工程技术有限公司 加热炉燃烧控制方法
CN115354142B (zh) * 2022-08-18 2023-11-28 重庆赛迪热工环保工程技术有限公司 加热炉燃烧控制方法

Also Published As

Publication number Publication date
BR9404753A (pt) 1995-09-19
ATE175764T1 (de) 1999-01-15
ZA949323B (en) 1996-05-24
FR2712961A1 (fr) 1995-06-02
DE69415954D1 (de) 1999-02-25
EP0661499B1 (de) 1999-01-13
TR28665A (tr) 1996-12-25
TW256874B (de) 1995-09-11
KR950014318A (ko) 1995-06-15
FR2712961B1 (fr) 1995-12-22

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