EP2561295B2 - Four à flamme et procédé de régulation de la combustion dans un four à flamme - Google Patents

Four à flamme et procédé de régulation de la combustion dans un four à flamme Download PDF

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Publication number
EP2561295B2
EP2561295B2 EP11719312.8A EP11719312A EP2561295B2 EP 2561295 B2 EP2561295 B2 EP 2561295B2 EP 11719312 A EP11719312 A EP 11719312A EP 2561295 B2 EP2561295 B2 EP 2561295B2
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EP
European Patent Office
Prior art keywords
combustion chamber
rate
flame
injection
flame intensity
Prior art date
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EP11719312.8A
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German (de)
English (en)
French (fr)
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EP2561295B1 (fr
EP2561295A1 (fr
Inventor
Philippe Beaudoin
Benoit Loiselet
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to PL11719312T priority Critical patent/PL2561295T3/pl
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating 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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/20—Arrangements for treatment or cleaning of waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/02—Treatment of the exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
    • F27D2019/004—Fuel quantity
    • F27D2019/0043—Amount of air or O2 to the burner

Definitions

  • the present invention relates to the regulation of combustion in flame furnaces.
  • Flame furnaces are commonly used in industry for thermal energy generation and for high temperature processing of materials.
  • flame furnace refers to a furnace, such as a smelting furnace or an incinerator, in which at least some of the thermal energy is produced in the combustion chamber of the furnace by the combustion of a fuel with an oxidant present in the oxidizer.
  • flame furnace also covers furnaces in which at least some of the thermal energy is produced by combustion without a visible flame, often referred to as “flameless combustion.”
  • the fumes generated by combustion are evacuated from the combustion chamber of the flame furnace at a temperature above 600°C through an exhaust duct.
  • maximum thermal energy is generated by combustion when it is stoichiometric, that is, when the oxidant is injected into the combustion zone in a quantity that corresponds to the quantity of oxidant required for the complete combustion of the fuel present in the combustion zone.
  • the carbon present in the fuel is completely oxidized to CO 2
  • the hydrogen generally present in the fuel is completely oxidized to H 2 O, etc.
  • it is found that a slight excess of oxidant is necessary to achieve complete combustion of the fuel.
  • Optimized operation of a flame furnace is generally possible in flame furnaces in which the fuel and oxidant inputs and their compositions are perfectly controlled.
  • JP-A-1314809 and of JP-A-2001004116 it is known to equip an incinerator with a camera directed towards the interior of the combustion chamber and to regulate the post-combustion inside the combustion chamber above the main combustion according to the image obtained of the combustion inside the chamber.
  • WO-A-2005/024398 it is known to measure the quantity of chemical species contained in a gas from a metal treatment furnace, such as an electric arc furnace or a converter, by sampling a portion of the gas to be analyzed, cooling it to less than 300°C and measuring the quantity of CO and/or CO 2 present in the gas using the coherent light signal emitted by a laser diode, said method allowing a measurement of said quantities with a response time of less than 10 seconds and real-time oven control.
  • a metal treatment furnace such as an electric arc furnace or a converter
  • WO-A-03/056044 describes an aluminium melting process in which solid aluminium is introduced into a furnace, the aluminium is melted to form an aluminium bath, variations in carbon monoxide (CO) concentration and temperature in the fumes leaving the furnace are detected, the formation of aluminium oxides on the surface of the aluminium bath is deduced and the melting process is regulated according to the formation of aluminium oxides.
  • CO carbon monoxide
  • WO-A-2004/083469 describes an aluminium melting process in which the fuel/oxidant ratio injected by a burner into the flame furnace is regulated according to the temperature of the fumes in the fume evacuation duct equipped with an air inlet called “dilution air”.
  • the dilution air flow rate can vary depending on various parameters (size of openings, speed of flue extraction, condition of flue ducts, flow rate of other flue streams collected by the same extractor). This variable flow rate can have an influence on the flue temperature in the exhaust duct and thus have an impact on the furnace setting. Daily (day and night) and seasonal (summer and winter) variations in the temperature of the dilution air, which is generally ambient air, can also have an impact on the flue temperature in the exhaust duct.
  • the object of the present invention is to provide a combustion control in a flame furnace which does not have the disadvantages of the known methods described above.
  • the present invention thus relates to a method for operating an improved flame furnace.
  • an oxidant called the "main oxidant”
  • a combustion chamber of the flame furnace Combustible material is burned in the combustion chamber with the main oxidant thus injected, producing thermal energy and fumes having a temperature greater than 600°C in the combustion chamber.
  • the fumes thus produced are evacuated from the combustion chamber through an exhaust duct.
  • This exhaust duct is provided with an inlet for an oxidant called a "dilution oxidant", typically, but not necessarily, ambient air, downstream of the combustion chamber, so that the dilution oxidant comes into contact with the fumes at 600°C or more.
  • the intensity of the flame is detected inside the exhaust duct, and therefore downstream of the combustion chamber, and the injection flow rate of the main oxidant into the combustion chamber is regulated as a function of the detected flame intensity.
  • the combustible material may in particular be introduced into the combustion chamber in a controlled manner, for example, by injecting a jet of fuel into the combustion chamber by means of a lance or a burner.
  • the combustible material may be present in the charge and therefore be introduced into the combustion chamber with the charge.
  • the combustible material may also be introduced into the combustion chamber by a combination of controlled introduction and introduction with the charge into the combustion chamber.
  • the injection flow rate of main oxidant injected into the combustion chamber is reduced when the flame intensity thus detected is less than a predetermined lower limit and the flow rate of main oxidant injected into the combustion chamber is increased when the flame intensity thus detected is greater than a predetermined upper limit.
  • oxidizable materials such as CO
  • the presence of oxidizable materials, such as CO, in the fumes is thus detected by the intensity of their combustion with the dilution oxidant using a flame detector which returns a signal indicating the intensity of the combustion/flame inside the exhaust duct: (a) a high intensity being the sign of a significant presence of oxidizable materials in the evacuated fumes, and (b) a low intensity being the sign of a low presence of oxidizable materials in the evacuated fumes.
  • the invention thus makes it possible to determine the level of presence of oxidizable materials in the fumes and to apply in real time a correction to the combustion adjustment in the combustion zone.
  • the predetermined lower and upper limits are set depending on the nature of the combustion process in the combustion chamber, as discussed above.
  • the predetermined lower limit is very low, but greater than zero. In this way, it is ensured that the main oxidant injection rate is neither excessive nor too low for the combustion process in the combustion chamber.
  • the invention makes it possible in particular to compensate for imperfect knowledge of the combustible material content of the furnace charge (typical case for recycling furnaces), of the quality of the combustible material and/or of its release into the combustion chamber by a real-time adaptation of the adjustment of the main oxidant flow rate and, as explained below, possibly also of the fuel flow rate injected into the combustion chamber.
  • Another advantage of the invention is that it can be implemented with an inexpensive and easy-to-implement flame intensity detector.
  • the content of oxidizable materials in the discharged flue gases may exhibit frequent, but often short-term, variations.
  • the flame intensity inside the discharge duct is detected for predetermined durations ⁇ t1 and ⁇ t2.
  • the injection rate of main oxidant into the combustion chamber is reduced when the detected flame intensity has remained below the lower limit for the predetermined duration ⁇ t1.
  • the injection rate of main oxidant into the combustion chamber is increased when the detected flame intensity has remained above the upper limit for the predetermined duration ⁇ t2.
  • Another possibility is (a) to reduce the injection rate of main oxidant into the combustion chamber when the average value of the flame intensity detected during the predetermined time ⁇ t1 is less than the lower limit, and (b) to increase the injection rate of main oxidant into the combustion chamber when the average value of the flame intensity detected during the predetermined time ⁇ t2 is greater than the upper limit.
  • the predetermined times ⁇ t1 and ⁇ t2 are typically identical.
  • the main oxidant and the combustible material are injected into the combustion chamber at controlled flow rates, the combustible material is burned with the main oxidant in the combustion chamber producing thermal energy and fumes at a temperature above 600°C in the combustion chamber, and the fumes thus produced are discharged from the combustion chamber through an exhaust duct.
  • the discharged fumes may contain residual oxidizable materials.
  • the exhaust duct is provided with a dilution oxidant inlet downstream of the combustion chamber.
  • the residual oxidizable materials in the flue gases are burned with the dilution oxidant, producing a flame inside the exhaust duct at the dilution oxidant inlet.
  • the flame intensity inside the exhaust duct is detected and the injection rate of the main oxidant into the combustion zone is regulated as a function of the detected flame intensity.
  • the ratio between the main oxidant injection rate and the fuel material injection rate in the combustion chamber is reduced when the flame intensity detected inside the exhaust duct is less than a predetermined lower limit and the ratio between the main oxidant injection rate and the fuel material injection rate in the combustion chamber is increased when the detected flame intensity is greater than a predetermined upper limit.
  • the ratio of the main oxidant injection rate to the combustible material injection rate into the combustion chamber can be changed by changing the main oxidant injection rate relative to the material injection rate. predetermined fuel, or by changing (a) the main oxidant injection rate and (b) the fuel injection rate. It should be noted, however, that the fuel injection rate into the combustion chamber is often regulated according to the thermal energy requirement in the combustion chamber.
  • the combustion chamber is equipped with at least one lance for injecting a regulated flow of main oxidant.
  • the combustion chamber may also be equipped with at least one burner for injecting a regulated flow of main oxidant and a regulated flow of combustible material.
  • the combustion chamber may also comprise at least one such lance and at least one such burner.
  • the process can be a batch process, a semi-batch process or a continuous feed process.
  • the combustion chamber can be the combustion chamber of an arc furnace, a rotary furnace, a fixed melting furnace, a reheating furnace, a boiler, an afterburner of gaseous effluents, etc.
  • the process may be a melting or vitrification process, and in particular a secondary melting process of recovered metals, a process of combustion of solid, liquid or gaseous waste, a process of post-combustion of gaseous effluents, a reheating process, such as the reheating of metallurgical products, etc.
  • the dilution oxidant inlet is typically an ambient air inlet in the exhaust duct (air gap), but can also be an oxidant injector, such as an oxygen-enriched air or oxygen injector.
  • the flame detector is advantageously an optical detector and in particular an optical detector chosen from ultraviolet detectors, infrared detectors and visible radiation detectors.
  • the detector is preferably an infrared detector or an ultraviolet detector.
  • main combustion which takes place inside the combustion chamber
  • the flame is detected inside the exhaust duct, preferably in a location sheltered from the main combustion.
  • the exhaust duct may be provided with an elbow. Flame detection then preferably takes place downstream of this elbow.
  • the dilution oxidant inlet is advantageously located immediately upstream, in or downstream of the elbow, so as to that the flame generated by the combustion of oxidizable materials in the fumes with the dilution oxidant develops at least mainly downstream of the elbow.
  • the furnace has a geometry that prevents interference between the main combustion and the flame detector or where the furnace has elements forming a screen between the main combustion and the flame detector, such an elbow is not necessary.
  • the present invention also relates to a flame furnace suitable for implementing the method described above.
  • the invention relates more particularly to a flame furnace comprising a combustion chamber, a means for injecting main oxidant at a regulated flow rate into this combustion chamber and a conduit for evacuating fumes from said combustion chamber.
  • the evacuation conduit comprises a dilution oxidant inlet downstream of the combustion chamber.
  • the flame furnace of the invention also comprises a detector for detecting a flame intensity inside the evacuation conduit at the dilution oxygen inlet. The detector is positioned and oriented so as to prevent the main combustion from distorting the detected flame intensity.
  • the exhaust duct may in particular comprise an elbow as mentioned above. Concerning the method according to the invention, the flame detector is then preferably positioned downstream of this elbow.
  • the dilution oxidant inlet is positioned immediately upstream, in or downstream of the elbow of the exhaust duct.
  • the furnace according to the invention comprises means for injecting combustible material at a regulated flow rate into the combustion chamber and the flame furnace preferably comprises a control unit linked (a) to the detector, (b) to the means for injecting the main oxidant into the combustion chamber, and (c) to the means for injecting combustible material into the combustion chamber.
  • This control unit is programmed (i) to compare the flame intensity detected by the detector inside the exhaust duct with a predetermined lower limit and a predetermined upper limit, (ii) to reduce the ratio between the main oxidant injection rate and the fuel injection rate into the combustion chamber when the detected flame intensity is lower than the predetermined lower limit, and (iii) to increase the ratio between the main oxidant injection rate and the fuel injection rate into the combustion chamber when the detected flame intensity is higher than a predetermined upper limit.
  • the control unit will advantageously vary the main oxidant injection rate as a function of the fuel material injection rate.
  • the control unit may, for example, in the case of a flame intensity below the predetermined lower limit, reduce the ratio between the main oxidant injection rate and the fuel material injection rate by increasing the fuel material injection rate at an unchanged main oxidant injection rate.
  • the main oxidant injection means of the furnace may comprise one or more lances for injecting main oxidant into the combustion chamber.
  • the means for injecting combustible material into the furnace may comprise one or more lances for injecting combustible material into the combustion chamber.
  • the furnace may also comprise one or more burners for injecting combustible materials and main oxidant into the combustion chamber.
  • a burner is therefore, on the one hand, part of the means for injecting main oxidant and, on the other hand, part of the means for injecting combustible material into the furnace.
  • the oven according to the invention can be an oven for a batch process, for a semi-batch process or for a continuous process.
  • the furnace may in particular be an arc furnace, a rotary furnace, a fixed melting furnace, a reheating furnace, such as a reheating furnace for metallurgical products, a boiler, a post-combustion chamber for gaseous effluents, etc.
  • the furnace may be a melting or vitrification furnace, and in particular a secondary melting furnace for recovered metals, an incinerator for solid, liquid or gaseous waste, etc.
  • the dilution oxidant inlet is typically an ambient air inlet in the exhaust duct (air gap), but can also be an oxidant injector, such as an oxygen-enriched air injector or an oxygen injector.
  • the flame detector is preferably an optical detector and in particular an optical detector chosen from ultraviolet detectors, infrared detectors and visible radiation detectors.
  • the combustible material injected into the combustion chamber may be a gaseous, liquid or solid fuel (e.g. natural gas, liquid fuel oil, propane, biofuel, pulverized coal) or a combination of several fuels.
  • This combustible material may be injected in addition to the combustible material introduced into the combustion chamber with the charge, which may be mixed with the charge before its introduction into the combustion chamber and/or may be an intrinsic part of the charge.
  • the main oxidant can be air, oxygen-enriched air, pure oxygen (having by definition an oxygen content of 88% to 100% vol) or a mixture of oxygen with recycled fumes. In the latter cases (oxygen-enriched air and in particular pure oxygen or a mixture of oxygen with recycled fumes), the benefit is reduced fume volume and fuel consumption.
  • Secondary melting refers to the melting of recycled materials or materials from primary metallurgy (for example: cast iron from a blast furnace).
  • metals considered are: cast iron, lead, aluminum, copper, or any other metal that can be melted in a flame furnace.
  • the metal charge can also be loaded into the furnace in a mixture with combustible materials composed of a high proportion of carbon (plastic, coke, etc.). These combustible materials can be present in the metal charge (for example in the case of aluminium recycling) and/or intentionally added to the charge for the purposes of the melting process (for example in the case of the deoxidation reaction for lead recycling).
  • the furnace is more specifically a rotary furnace for secondary lead melting with a combustion chamber 2 with a capacity of 15t.
  • the furnace is equipped with a natural gas/oxygen burner 24 which generates the flame 11 in the combustion chamber 2.
  • the power of the burner 24 and the oxygen/natural gas ratio are controlled by the furnace automation (control device 20 connected to the oxygen flow regulator 15 and to the natural gas flow regulator 17) according to the progress of the heating cycle, as described below.
  • Charge 30 consists of lead waste from the crushing of automobile batteries. A significant portion of this lead is in the form of a "paste" of oxide (PbO, PbO 2 ”). and lead sulfate (PbSO 4 ). To this metallic charge are added materials necessary for the reduction of oxides partly made up of coke (containing a high carbon content), also called “reagents”.
  • the lead recycling process involves heating the charge 30, and then keeping the charge hot in contact with the reactants in order to obtain liquid lead 4 and a slag which fixes the impurities and the sulfur present in the lead sulfate.
  • the furnace operates discontinuously.
  • the combustion chamber 2 is loaded at the beginning of each cycle.
  • the burner 24 is then ignited and its power modulated by the control device 20 so that the temperature of the load follows a heating cycle that has been determined empirically.
  • reaction rate of the carbon present in solid charge 30 with the furnace atmosphere varies depending on the different process parameters, such as in particular the composition of the load which varies depending on the origin of the batches to be recycled.
  • the detection according to the invention by means of the UV detector 10 of the D-LX100 range marketed by the company Durag of the intensity of the combustion flame 12 of the CO + H 2 mixture with the dilution air just after the outlet 5 of the furnace makes it possible to correct the adjustment of the burner 24 by acting on the “Oxygen / Natural Gas” ratio. To this end, the detector 10 transmits to the control device 20 a signal corresponding to the detected flame intensity.
  • the elbow of the chimney 13 and the positioning of the UV10 detector relative to said elbow ensures that the UV10 detector detects only the intensity of the flame 12 inside the chimney 13 without interference from the UV radiation of the combustion inside the combustion chamber 2.
  • burner 24 injects an excess of 70 Nm3/h of oxygen, compared to the initial setting. This excess oxygen is then available for combustion inside furnace 2 of the combustible materials released by the load.
  • This adjustment of the oxygen/natural gas ratio is done dynamically depending on the intensity of the post-combustion of the smoke in the chimney 13 (intensity of the flame 12 detected).
  • furnace 2 The energy efficiency of furnace 2 is significantly improved and effective treatment of fumes, particularly their filtering, is ensured.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Incineration Of Waste (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP11719312.8A 2010-04-23 2011-03-30 Four à flamme et procédé de régulation de la combustion dans un four à flamme Active EP2561295B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11719312T PL2561295T3 (pl) 2010-04-23 2011-03-30 Piec płomieniowy i sposób regulowania spalania w piecu płomieniowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1053147A FR2959298B1 (fr) 2010-04-23 2010-04-23 Four a flamme et procede de regulation de la combustion dans un four a flamme
PCT/FR2011/050703 WO2011131880A1 (fr) 2010-04-23 2011-03-30 Four à flamme et procédé de régulation de la combustion dans un four à flamme

Publications (3)

Publication Number Publication Date
EP2561295A1 EP2561295A1 (fr) 2013-02-27
EP2561295B1 EP2561295B1 (fr) 2018-05-16
EP2561295B2 true EP2561295B2 (fr) 2025-04-02

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US (1) US20130115560A1 (pl)
EP (1) EP2561295B2 (pl)
JP (1) JP2013530366A (pl)
CN (1) CN102859307B (pl)
BR (1) BR112012027190B1 (pl)
CA (1) CA2797168C (pl)
ES (1) ES2675910T5 (pl)
FR (1) FR2959298B1 (pl)
PL (1) PL2561295T3 (pl)
RU (1) RU2012149939A (pl)
TR (1) TR201809425T4 (pl)
WO (1) WO2011131880A1 (pl)

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CN103363540B (zh) * 2013-06-21 2016-04-27 广东电网公司电力科学研究院 一种电站锅炉低负荷运行下的升温补燃系统
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CN102859307B (zh) 2015-08-19
BR112012027190A2 (pt) 2016-07-19
ES2675910T5 (en) 2025-05-30
WO2011131880A1 (fr) 2011-10-27
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ES2675910T3 (es) 2018-07-13
US20130115560A1 (en) 2013-05-09
PL2561295T3 (pl) 2018-11-30
CA2797168C (fr) 2018-07-03
CA2797168A1 (fr) 2011-10-27
RU2012149939A (ru) 2014-05-27
FR2959298B1 (fr) 2012-09-21
BR112012027190B1 (pt) 2020-11-03
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