EP3671038B1 - Anordnung und verfahren für die injektion von gasförmigem brennmittel - Google Patents

Anordnung und verfahren für die injektion von gasförmigem brennmittel Download PDF

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Publication number
EP3671038B1
EP3671038B1 EP18306820.4A EP18306820A EP3671038B1 EP 3671038 B1 EP3671038 B1 EP 3671038B1 EP 18306820 A EP18306820 A EP 18306820A EP 3671038 B1 EP3671038 B1 EP 3671038B1
Authority
EP
European Patent Office
Prior art keywords
assembly
injector
gaseous
primary
pressure
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.)
Active
Application number
EP18306820.4A
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English (en)
French (fr)
Other versions
EP3671038A1 (de
Inventor
Sarah Juma
Xavier Paubel
Chloe CAUMONT-PRIM
Benoit Grand
Jean-Baptiste SENECHAL
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.)
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
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 to ES18306820T priority Critical patent/ES2894624T3/es
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to EP18306820.4A priority patent/EP3671038B1/de
Priority to JP2021535184A priority patent/JP2022514328A/ja
Priority to BR112021011579-0A priority patent/BR112021011579A2/pt
Priority to CN201980083376.4A priority patent/CN113195976A/zh
Priority to US17/416,771 priority patent/US20220074592A1/en
Priority to MX2021007420A priority patent/MX2021007420A/es
Priority to PCT/EP2019/082987 priority patent/WO2020126401A1/fr
Publication of EP3671038A1 publication Critical patent/EP3671038A1/de
Application granted granted Critical
Publication of EP3671038B1 publication Critical patent/EP3671038B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • 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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/005—Gaseous fuel from a central source to a plurality of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • 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
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14003—Special features of gas burners with more than one nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2400/00—Pretreatment and supply of gaseous fuel
    • F23K2400/20—Supply line arrangements
    • F23K2400/201—Control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/02—Controlling two or more burners

Definitions

  • the present invention relates to an assembly for injecting a gaseous combustion agent into a combustion zone, a burner comprising such an assembly and the use of such an assembly / burner in a combustion process.
  • the flame characteristics are determined in particular by the nature of the combustion agents (fuel and oxidizer) and the way in which they are introduced into the combustion zone (flow rates, speeds, distribution in space, etc.).
  • a burner which comprises a first internal passage for supplying oxidizer rich in oxygen (at least 80% O 2 ), an intermediate passage for supplying fuel externally surrounding the first passage for supplying oxidizer and a second passage oxidizer supply exterior externally surrounding the fuel supply passage.
  • the burner comprises a means for varying the flow rate of oxidizer injected through the first interior passage, which makes it possible to control a characteristic of the flame such as the length of the flame and the brightness.
  • a burner comprising a first internal passage for supplying oxidizer, an intermediate passage for supplying fuel externally surrounding the first passage for supplying oxidizer and a second external passage for supplying oxidizer externally surrounding the passage of supply of fuel for the heating of a molten glass transfer channel during the production of glass and to adjust the length of flame generated by means of said burner by modifying the proportion of the total flow of oxidizer passing through the first passage of supply of oxidizer.
  • the burners mentioned above are burners with concentric and adjacent injection of fuel and oxidizer generating a flame of essentially circular section.
  • burners generate so-called “flat flames” and / or inject at least part of the oxidizer at a distance from the injection of the fuel, or even inject at least part of the fuel at a distance from the injection of the oxidizer.
  • the at least two gaseous fuel passages each have an internal passage and a coaxial external passage.
  • a gaseous fuel flow control means regulates the flow of gaseous fuel through the interior passages and the exterior passages, respectively, by means of a gaseous fuel distributor.
  • the known burners do not include any means of feedback to adjust the operation of the burner and therefore the target flame characteristic in real time.
  • the present invention relates to an assembly for the injection, into a combustion zone, of a gaseous combustion agent chosen from gaseous fuels and gaseous oxidants.
  • the set comprises a chamber and the agent is introduced into the set through an entrance to this chamber.
  • the assembly comprises at least one primary injector for transporting a primary flow of agent from the chamber to the combustion zone and for injecting said primary flow into the combustion zone.
  • the at least one primary injector is fluidly connected to the chamber by means of at least one passage called the primary passage.
  • the assembly also includes at least one secondary injector for transporting a secondary flow of agent from the chamber to the combustion zone and for injecting said secondary flow into the combustion zone.
  • the at least one secondary injector is in turn fluidly connected to the chamber by means of at least one passage called the secondary passage.
  • the at least one secondary passage has an adjustable flow section.
  • An adjustment system for example in the form of a valve, makes it possible to adjust this flow section of the at least one secondary passage.
  • the assembly also includes a pressure detector for detecting a pressure or a variation in gas pressure in the chamber as well as a control system connected to the pressure detector.
  • the control system is also connected to an adjustment system and controls said adjustment system, so that the flow section of the at least one secondary passage of the assembly is regulated as a function of the pressure or of the variation. pressure detected by the assembly pressure sensor.
  • control system which can be an analog or digital control system, is adapted to control the control system so that the gas pressure in the chamber is in a pressure zone predetermined by adjusting the flow section of the at least one secondary passage.
  • control system is adapted to control the adjustment system so that the gas pressure in the chamber corresponds to a value predetermined by the adjustment of the flow section of the at least one secondary passage.
  • control system of the assembly can be an analog or a digital system. It can be mechanical, for example pneumatic or hydraulic. Preferably, the control system is digital. According to a preferred embodiment, the control system is programmable. In this case, for the implementation of the injection assembly according to the invention, the control system is programmed so as to control the adjustment system so as to actuate the adjustment system as a function of the pressure or of the pressure variation detected by the pressure detector. The gas pressure or the variation in gas pressure detected by the pressure detector is then transmitted to the programmable control system: for example by means of a wired connection or by a wireless connection.
  • the adjustment system may include different means for adjusting the flow section of the at least one secondary passage, such as one or more adjustable valves positioned in the at least one secondary passage between the chamber and the at least one.
  • a secondary injector or the movement of a mechanical element acting as a shutter of the at least one secondary passage, this movement being generated for example by translation, by rotation (screwing) or by deformation of a mechanical element linked to the shutter or by modification of the magnetic state of a metallic element.
  • the adjustment system is provided with at least one shutter capable of adjusting the flow section of the at least one secondary passage by at least partially closing it.
  • the at least one secondary passage connecting the at least one secondary injector fluidly to the chamber has a funnel-shaped internal surface and the control system includes a shutter having a corresponding external surface and movable along the longitudinal axis. of the passage secondary. When the shutter is thus moved along said longitudinal axis, the outer surface of the shutter approaches or moves away from the internal surface of the secondary passage and the flow section of said passage is reduced, respectively enlarged.
  • control system it may be advantageous to design the control system so that the flow section of the at least one secondary passage is never entirely closed. Indeed, in order to ensure sufficient cooling of the at least one secondary injector and / or to avoid the clogging of at least one secondary injector (for example due to deposits of condensable substances present in the atmosphere of the combustion zone or soot formation from the superheating of the gaseous fuel in contact with at least one secondary injector) minimal gas flow through the at least one secondary injector may be necessary. However, it is also conceivable to ensure such a minimum gas flow by means other than the adjustment system defined above such as for example fluid passages bypassing the shutter and of reduced size in order simply to ensure this minimum flow rate.
  • the assemblies are typically made of metal, the injectors or at least the downstream ends (injection ends) often being advantageously made of metals with high resistance to heat and oxidation, such as austenitic nickel steel alloys. -chrome type Inconel® or nickel-free alloys such as Kanthal®.
  • the assembly according to the invention can more particularly comprise at least one pair of a primary injector with a secondary injector, pair in which one of the primary injector and the secondary injector surrounds the other of the primary injector. and the secondary injector.
  • the primary injector can thus surround the secondary injector or the secondary injector can surround the primary injector of the torque.
  • the primary torque injector is surrounded by the secondary torque injector.
  • the primary injector and the secondary torque injector are concentric.
  • a non-concentric arrangement can be useful.
  • the fluid can be a gaseous oxidizer, such as a gas containing at least 80% by volume and preferably at least 90% by volume of oxygen.
  • the primary torque injector is centrally located and surrounded by the secondary torque injector, preferably concentrically.
  • An injector for injecting fuel into the combustion zone is located between the primary injector and the secondary torque injector, so that the fuel injector surrounds the primary oxidant injector and is surrounded by the 'secondary oxidizer injector, the assembly thus forms part of a burner for the (at least partial) combustion of the fuel with the oxidizer and in which the flow section of the secondary injector and therefore also the distribution of the oxidant between the primary flow rate and the secondary flow rate are regulated by the control system by means of the adjustment system according to the gas pressure or the variation in gas pressure in the chamber of the assembly detected by the pressure detector.
  • the fluid is a gaseous fuel, such as natural gas.
  • the primary torque injector is centrally located and surrounded by the secondary injector, preferably concentrically.
  • An injector for injecting oxidant into the combustion zone is located between the primary injector and the secondary torque injector, so that the oxidant injector surrounds the primary fuel injector and is surrounded by the secondary fuel injector.
  • the oxidizer is preferably a gas containing at least 80% by volume and more preferably at least 90% by volume of oxygen.
  • the assembly thus forms part of a burner for the (at least partial) combustion of the fuel with the oxidizer and in which the flow section of the secondary injector and therefore also the distribution of the fuel between the primary flow rate and the flow rate Secondary fuel are regulated by the control system by means of the adjustment system according to the gas pressure or the variation in gas pressure in the chamber of the assembly detected by the pressure detector.
  • the assembly according to the invention may comprise a single primary injector and a single secondary injector and in particular a single pair of a primary injector with a secondary injector.
  • the assembly according to the invention comprises several primary injectors and / or several secondary injectors and in particular several pairs of a primary injector with a secondary injector.
  • the at least one secondary injector of the assembly is spaced from the at least one primary injector of the assembly without the at least one primary injector of the assembly surrounds a secondary injector of the assembly and without the at least one secondary injector of the assembly surrounding a primary injector of the assembly.
  • the at least one primary injector can in particular extend in a first plane, while the at least one secondary injector extends in a second plane, the second plane being parallel to the first plane. In this way, it is possible to inject the primary flow and the secondary flow of the gaseous combustion agent into the combustion zone in two parallel planes.
  • the at least one primary injector extends in a first plane and the at least one secondary injector extends in a second plane, the first plane and the second plane intersecting downstream of said primary injectors and secondary, that is to say inside the combustion zone into which the gaseous combustion agent is injected.
  • the assembly according to the invention may include at least two primary injectors and / or at least two secondary injectors, preferably at least two primary injectors and at least two secondary injectors. This is particularly advantageous in the case where, as described above, the at least one primary injector extends in a first plane and the at least one secondary injector extends in a second plane different from the first plane.
  • the inlet of the assembly which is also the inlet of the chamber of the assembly, is fluidly connected to a source of gaseous fuel, preferably to a source of gaseous fuel chosen from natural gas, biogas, propane, butane, residual gases from iron and steel or methane reforming processes, hydrogen, any mixture of said gaseous fuels, or to a source of an oxidizer gaseous, preferably having an oxygen content of 21 to 100% vol, preferably greater than 21% vol and in particular at least 80% vol, more preferably at least 90% vol.
  • a source of gaseous fuel preferably to a source of gaseous fuel chosen from natural gas, biogas, propane, butane, residual gases from iron and steel or methane reforming processes, hydrogen, any mixture of said gaseous fuels, or to a source of an oxidizer gaseous, preferably having an oxygen content of 21 to 100% vol, preferably greater than 21% vol and in particular at least 80% vol, more preferably at least 90% vol.
  • Such a source can be a reservoir of the gaseous agent in gaseous form or in liquefied form, a supply conduit transporting said gaseous agent or a generator of said gaseous agent.
  • the invention also relates to an installation comprising several assemblies according to any one of the embodiments described above.
  • this installation may be preferable for this installation to include a common control system capable of controlling, preferably independently, the adjustment system of each assembly of the installation as a function of the gas pressure or the variation in gas pressure detected by the pressure detector of said assembly.
  • the assembly can be incorporated into a burner.
  • Such a burner according to the invention therefore comprises an assembly according to any one of the above embodiments for the injection into a combustion zone of a gaseous combustion agent chosen from a gaseous fuel and a gaseous oxidizer.
  • Such a burner typically also comprises at least one additional injector for injecting an additional fluid into the combustion zone.
  • the at least one additional injector is suitable for the injection of a gaseous oxidant into the combustion zone and when the gaseous agent injected by the 'together is a gaseous oxidizer, the at least one additional injector is suitable for the injection of a fuel (gaseous or non-gaseous) into the combustion zone.
  • the burner comprises a block with an inlet face and an outlet face opposite the inlet face.
  • the combustion zone is located downstream of the exit face.
  • the block is typically made of a refractory material, such as a cement, or an electrofused material, or a pressed material, composed mainly of alumina and / or zirconia and / or silica and / or or magnesia or a mixture of these components in varying proportions depending on the application process.
  • a refractory material such as a cement, or an electrofused material, or a pressed material, composed mainly of alumina and / or zirconia and / or silica and / or or magnesia or a mixture of these components in varying proportions depending on the application process.
  • the assembly is then attached to the inlet face of the block so that the injectors of the burner, and therefore also the injectors of the assembly, are positioned in one or more perforations which pass through the block of the face of. entry to exit face.
  • a burner according to the invention may, for example comprise such a block with one or more first perforations which end at a first level in the outlet face of the block as well as one or more additional perforations which end in the face. output to a second level below or above the first level.
  • the assembly comprises at least two and preferably at least three primary injectors and secondary injectors for the transport and injection of gaseous fuel into the combustion zone.
  • Each of the primary injectors forms a couple with one of the secondary injectors.
  • each of the primary injectors surrounds one of the secondary injectors.
  • each of the secondary injectors surrounds one of the primary injectors.
  • the burner also includes several additional injectors for transporting and injecting oxidant into the combustion zone.
  • Said additional injectors are positioned in the additional passage or passages of the block so as to allow the injection of oxidizer into the combustion zone above or below the gaseous fuel.
  • the additional injectors may extend in a plane parallel to the plane of the torques of a primary injector with a secondary injector.
  • the additional injectors can define an oxidizer injection plane which intersects the plane of the torques in the combustion zone downstream of the outlet face where the oxidizer injected by the additional injectors mixes and reacts with it. the fuel injected by the couples.
  • the additional passage (s) terminate in the exit face of the block above the first passage (s). According to another embodiment, the additional passage (s) terminate in the exit face of the block below the first passage (s).
  • the block comprises one or more additional passages which terminate in the outlet face at a level situated above the first level and in which there are at least two and preferably at least three injectors. for the oxidizer, as well as one or more additional passages which terminate in the outlet face of the block below the first level and in which or which are also at least two and preferably at least three additional injectors for the oxidizer.
  • This embodiment makes it possible to inject, according to the needs of the process, oxidizer into the combustion zone above, below or above and below the gaseous fuel.
  • the invention also relates to a furnace comprising an internal combustion zone and equipped with at least one assembly according to the invention for the injection of a gaseous combustion agent chosen from gaseous fuels and gaseous oxidants into said combustion zone.
  • a gaseous combustion agent chosen from gaseous fuels and gaseous oxidants into said combustion zone.
  • the at least one assembly can form part of a burner according to the invention, in which case the oven is equipped with at least one burner according to the invention.
  • the present invention can in particular advantageously be implemented in a furnace selected from furnaces for manufacturing or reheating glass or enamels, furnaces for manufacturing or recycling or reheating metals such as rotary furnaces or aluminum lampposts. , copper or lead, cast iron, steel, etc.
  • Another aspect of the present invention is a combustion process in which a gaseous combustion agent chosen from gaseous fuels and oxidizers is injected into a combustion zone by means of an assembly according to the invention, said assembly possibly forming part. of a burner according to the invention.
  • the pressure detector of each assembly detects the gas pressure or a variation of the gas pressure in the chamber of this assembly
  • the adjustment system of the assembly regulates the flow section of its at least one secondary passage
  • the control system controls the control system so that the flow section of the at least one secondary passage of each assembly is regulated according to the pressure or the pressure variation detected by the pressure sensor of this set.
  • each assembly can have its own control system connected to the pressure detector and to the system. adjustment, the control system controlling the adjustment system so that the flow section of the at least one secondary passage is regulated as a function of the pressure or of the pressure variation detected by the pressure detector of said assembly.
  • a common control system can control the adjustment system of each assembly as a function of the pressure or of the pressure variation detected by the pressure detector of the assembly in question.
  • the system for adjusting the assembly can be controlled so that the gas pressure in the chamber of the assembly is located in a predetermined pressure zone or else so that the gas pressure in the chamber of the set corresponds to a predetermined value.
  • the gaseous combustion agent injected into the combustion zone by means of the assembly is a gaseous fuel chosen from natural gas, biogas, propane, butane, residual gases from iron and steel processes or from methane reforming, l 'hydrogen or any mixture of the gases mentioned above, or a gaseous oxidizer, preferably having an oxygen content from 21 to 100% vol, preferably greater than 21% vol and in particular at least 80% vol, more preferably at least 90% vol.
  • the process according to the invention is particularly useful for carrying out combustion inside a combustion zone in the context of a process such as the manufacture or recycling of glass or enamels, the manufacture or recycling or reheating of metals such as aluminum, copper, lead, cast iron, steel, etc.
  • the figures 1, 2 , and 3 show a fluid inlet chamber (11).
  • the primary injector (21) is fluidly connected to the chamber (11) by means of a primary passage (23).
  • the secondary injector is fluidly connected to the chamber (11) by means of a secondary passage (24).
  • the secondary passage (24) has an adjustable flow section.
  • An adjustment system (32) makes it possible to adjust this section. flow of the secondary passage (24) thanks to a shutter (33).
  • figures 1, 2 and 3 also show a pressure detector (30) for detecting a gas pressure or a variation in gas pressure in the chamber (11) as well as a control system (31) connected to the pressure detector (30).
  • the control system is also connected to and controls the adjustment system (32).
  • the figure 4 schematically represents an assembly comprising three primary injectors (21) each surrounded by its concentric secondary injector (22), a chamber (11).
  • the primary injectors (21) are fluidly connected to the chamber (11) by the primary passages (23).
  • the secondary injectors (22) are fluidly connected to the chamber (11) by the secondary passages (24).
  • the secondary passage has an adjustable flow section.
  • An adjustment system (32) makes it possible to adjust this flow section of the secondary passage (24) by means of a shutter (33).
  • a pressure detector (30) is present for the detection of a pressure or a variation of gas pressure in the chamber (11).
  • a control system (31) is connected to the pressure detector (30). This control system is also connected to and controls the adjustment system (32).
  • the burner comprising a block (40) with an inlet face (41) and an outlet face (42) opposite the inlet face, as well as additional injectors (50) for the injection of 'an additional fluid in the combustion zone (1).
  • the automatic adjustment by feedback system according to the present invention can advantageously be implemented in various combustion processes such as the production of glass.
  • Glass production furnaces mainly use air preheated to over 1000 ° C as an oxidizer. This hot air is obtained as it passes through regenerators (stack of refractory bricks). The volume of oxidizer injected into the furnace at this temperature level constitutes a significant amount of movement.
  • Oxy-combustion that is to say combustion with an oxidizer containing at least 80% vol and preferably at least 90% vol of oxygen
  • oxy flames are very disturbed by the flames, called “aero flames”, coming from the regenerators operating with hot air, because lower momentum of oxy flames.
  • oxy flames are very disturbed by the flames, called “aero flames”, coming from the regenerators operating with hot air, because lower momentum of oxy flames.
  • These disturbances can create interference of the oxy flame with the molten solid and unburnt material and thus glass quality or energy efficiency problems.
  • These problems are all the more important when the power (and therefore the flow rates of the combustion agents) of the oxy-burners is reduced for lower production increase phases. It is therefore essential to maximize the momentum or momentum of the oxy flames throughout the power range of the oxy-burners.
  • the present invention can advantageously be used in this case by defining a predefined pressure range or a predefined pressure making it possible to ensure an automatic distribution of flow rate between the primary and secondary injections so as to maximize the pulse of the oxy flame whatever the total fuel flow.
  • the power of an oxy-burner can be 800 kW while for a production increase of 8%, the power of an oxy-burner can be of 1.8 MW. It has been determined that a pressure of 300 mbarg at the level of the distribution chamber between the two fuel injections makes it possible to ensure a very stable flame at both 800 kW and 1800 kW. The automatic adjustment according to the invention of the distribution of the fuel as a function of the gas pressure in the chamber when the power varies will thus make it possible to optimize production costs, limit quality defects and optimize energy consumption.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Claims (15)

  1. Anordnung für die Injektion eines gasförmigen Brennmittels, das aus gasförmigen Brennstoffen und gasförmigen Sauerstoffträgern ausgewählt ist, in eine Verbrennungszone, wobei die Anordnung Folgendes umfasst:
    • eine Kammer (11), die einen Eintritt aufweist, durch den das Mittel in die Anordnung eingeführt wird,
    • mindestens einen ersten Injektor (21) für den Transport einer ersten Menge des Mittels von der Kammer (11) zu der Verbrennungszone (1) und für die Injektion der ersten Menge in die Verbrennungszone (1), wobei der mindestens eine erste Injektor mittels mindestens eines ersten Durchgangs (23) mit der Kammer (11) fluidisch verbunden ist,
    • mindestens einen zweiten Injektor (22) für den Transport einer zweiten Menge des Mittels von der Kammer (11) zu der Verbrennungszone (1) und für die Injektion der zweiten Menge in die Verbrennungszone, wobei der mindestens eine zweite Injektor mittels mindestens eines zweiten Durchgangs (24) mit der Kammer fluidisch verbunden ist,
    und ein Einstellsystem (31) für die Einstellung eines Strömungsquerschnitts des mindestens einen zweiten Durchgangs,
    dadurch gekennzeichnet, dass die Anordnung außerdem Folgendes umfasst:
    • einen Druckdetektor (30) für die Detektion eines Gasdrucks oder einer Gasdruckveränderung in der Kammer und
    • ein Steuersystem (32), das mit dem Druckdetektor und dem Einstellsystem verbunden ist, wobei das Steuersystem das Einstellsystem so ansteuert, dass der Strömungsquerschnitt des mindestens einen zweiten Durchgangs in Abhängigkeit von dem Druck oder der Druckveränderung, der/die durch den Druckdetektor detektiert wird, eingestellt wird.
  2. Anordnung nach Anspruch 1, wobei das Steuersystem das Einstellsystem so ansteuert, dass sich der Gasdruck in der Kammer in einem vorgegebenen Druckbereich befindet, oder so ansteuert, dass der Gasdruck in der Kammer einem Wert entspricht, der durch die Einstellung des Strömungsquerschnitts des mindestens einen zweiten Durchgangs vorgegeben wird.
  3. Anordnung nach einem der vorhergehenden Ansprüche, wobei das Einstellsystem über mindestens ein Absperrorgan (33) verfügt, das dazu fähig ist, den Strömungsquerschnitt des mindestens einen zweiten Durchgangs einzustellen.
  4. Anordnung nach einem der vorhergehenden Ansprüche, die mindestens ein Paar aus einem ersten Injektor und einem zweiten Injektor umfasst, wobei bei dem Paar einer von dem ersten Injektor und dem zweiten Injektor den anderen von dem ersten Injektor und dem zweiten Injektor umgibt.
  5. Anordnung nach einem der vorhergehenden Ansprüche, die mindestens zwei erste Injektoren und/oder mindestens zwei zweite Injektoren, vorzugsweise mindestens zwei erste Injektoren und mindestens zwei zweite Injektoren umfasst.
  6. Einrichtung, die mehrere Anordnungen nach einem der vorhergehenden Ansprüche umfasst, wobei die Einrichtung vorzugsweise ein gemeinsames Steuersystem umfasst, das mit den Druckdetektoren jeder Anordnung verbunden ist und dazu fähig ist, das Einstellsystem jeder Anordnung in Abhängigkeit von dem Gasdruck oder der Gasdruckveränderung, der/die durch den Druckdetektor der Anordnung detektiert wird, anzusteuern.
  7. Brenner, der eine Anordnung nach einem der Ansprüche 1 bis 5 für die Injektion eines gasförmigen Brennmittels, das aus einem gasförmigen Brennstoff und einem gasförmigen Sauerstoffträger ausgewählt ist, in eine Verbrennungszone und mindestens einen zusätzlichen Injektor für die Injektion eines zusätzlichen Fluids in die Verbrennungszone beinhaltet.
  8. Brenner nach Anspruch 7, der einen Block (40) mit einer Eintrittsseite (41) und einer Austrittsseite (42) gegenüber der Eintrittsseite (41) beinhaltet, wobei in dem Brenner die Anordnung so an der Eintrittsseite (41) des Blocks (40) angebracht ist, dass sich die Injektoren des Brenners in einer oder mehreren Bohrungen, die den Block von der Eintrittsseite bis zur Austrittsseite durchqueren, befinden.
  9. Brenner nach Anspruch 8, wobei die ersten und zweiten Injektoren der Anordnung Paare aus einem ersten Injektor und einem zweiten Injektor bilden, wobei sich die Paare in mindestens einer ersten Bohrung des Blocks (40) befinden und sich der mindestens eine zusätzliche Injektor in mindestens einer zusätzlichen Bohrung des Blocks (40) befindet.
  10. Brenner nach Anspruch 9, der mindestens zwei Paare und mindestens zwei zusätzliche Injektoren umfasst, wobei die Paare eine erste Injektionsebene des Fluids definieren und wobei die Injektoren eine zweite Injektionsebene des zusätzlichen Fluids definieren, die sich von der ersten Ebene unterscheidet, wobei die zweite Ebene zu der ersten Ebene parallel ist oder so ausgerichtet ist, dass sie die erste Ebene in der Verbrennungszone stromabwärts der Austrittsseite (42) schneidet.
  11. Ofen, der eine interne Verbrennungszone umfasst und der mindesten eine Anordnung nach einem der Ansprüche 1 bis 5 für die Injektion eines gasförmigen Brennmittels, das aus gasförmigen Brennstoffen und gasförmigen Sauerstoffträgern ausgewählt ist, in die interne Verbrennungszone des Ofens umfasst, wobei die mindestens eine Anordnung optional Teil eines Brenners nach einem der Ansprüche 7 bis 10 ist.
  12. Ofen nach Anspruch 11, der mehrere Anordnungen umfasst, wobei der Ofen vorzugsweise ein gemeinsames Steuersystem umfasst, das mit den Druckdetektoren jeder Anordnung verbunden ist und dazu fähig ist, das Einstellsystem jeder Anordnung in Abhängigkeit von dem Gasdruck oder der Gasdruckveränderung, der/die durch den Druckdetektor der Anordnung detektiert wird, anzusteuern.
  13. Verbrennungsverfahren, bei dem ein gasförmiges Brennmittel, das aus gasförmigen Brennstoffen und gasförmigen Sauerstoffträgern ausgewählt ist, mittels einer Anordnung nach einem der Ansprüche 1 bis 5 in eine Verbrennungszone injiziert wird, wobei die Anordnung optional Teil eines Brenners nach einem der Ansprüche 7 bis 10 ist, wobei bei dem Verfahren:
    • der Druckdetektor der Anordnung den Gasdruck in der Kammer der Anordnung detektiert,
    • das Einstellsystem der Anordnung den Strömungsquerschnitt des mindestens einen zweiten Durchgangs einstellt und
    • das Steuersystem der Anordnung das Einstellsystem der Anordnung so ansteuert, dass der Strömungsquerschnitt des mindestens einen zweiten Durchgangs in Abhängigkeit von dem Druck oder der Druckveränderung, der/die durch den Druckdetektor der Anordnung detektiert wird, eingestellt wird.
  14. Verfahren nach Anspruch 13, wobei das Steuersystem das Einstellsystem so ansteuert, dass sich der Gasdruck in der Kammer in einem vorgegebenen Druckbereich befindet, oder so ansteuert, dass der Gasdruck in der Kammer der Anordnung einem Wert entspricht, der durch die Einstellung des Strömungsquerschnitts des mindestens einen zweiten Durchgangs der Anordnung vorgegeben wird.
  15. Verfahren nach einem der Ansprüche 13 und 14, wobei das gasförmige Brennmittel ein gasförmiger Brennstoff, der aus Erdgas, Biogas, Propan, Butan, Restgasen aus Eisenhütten- oder Methanreformierungsverfahren, Wasserstoff oder jeder Mischung aus mindestens zwei dieser gasförmigen Brennstoffe ausgewählt ist, oder ein gasförmiger Sauerstoffträger, der einen Sauerstoffgehalt von 21 bis 100 Vol-%, vorzugsweise von größer als 21 Vol-% und insbesondere von mindestens 80 Vol-%, noch bevorzugter von mindestens 90 Vol-% aufweist, ist.
EP18306820.4A 2018-12-21 2018-12-21 Anordnung und verfahren für die injektion von gasförmigem brennmittel Active EP3671038B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP18306820.4A EP3671038B1 (de) 2018-12-21 2018-12-21 Anordnung und verfahren für die injektion von gasförmigem brennmittel
ES18306820T ES2894624T3 (es) 2018-12-21 2018-12-21 Conjunto y procedimiento para la inyección de un agente de combustión gaseoso
BR112021011579-0A BR112021011579A2 (pt) 2018-12-21 2019-11-28 Montagem e método para injetar um agente de combustão gasoso
CN201980083376.4A CN113195976A (zh) 2018-12-21 2019-11-28 用于喷射气态燃烧剂物的组件和方法
JP2021535184A JP2022514328A (ja) 2018-12-21 2019-11-28 ガス状燃焼剤噴射アセンブリ及び方法
US17/416,771 US20220074592A1 (en) 2018-12-21 2019-11-28 Assembly and method for injecting a gaseous combustion agent
MX2021007420A MX2021007420A (es) 2018-12-21 2019-11-28 Conjunto y metodo para inyectar un agente de combustion gaseoso.
PCT/EP2019/082987 WO2020126401A1 (fr) 2018-12-21 2019-11-28 Ensemble et procédé pour l'injection d'un agent de combustion gazeux

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EP18306820.4A EP3671038B1 (de) 2018-12-21 2018-12-21 Anordnung und verfahren für die injektion von gasförmigem brennmittel

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EP3715717B9 (de) 2019-03-26 2021-11-24 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verbrennungsverfahren und brenner für dessen umsetzung

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JPS5439142Y2 (de) * 1976-04-09 1979-11-20
US5743723A (en) 1995-09-15 1998-04-28 American Air Liquide, Inc. Oxy-fuel burner having coaxial fuel and oxidant outlets
FR2788110B1 (fr) 1998-12-30 2001-02-16 Air Liquide Procede de combustion et ses utilisations pour l'elaboration de verre et de metal
GB2423119B (en) * 2005-08-05 2007-08-08 Scion Sprays Ltd A Fuel injection system for an internal combustion engine
EP2143999A1 (de) * 2008-07-08 2010-01-13 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Brennerbaugruppe und Verbrennungsverfahren
US20110265488A1 (en) * 2010-04-29 2011-11-03 General Electric Company ALTERNATE METHOD FOR DILUENT INJECTION FOR GAS TURBINE NOx EMISSIONS CONTROL
EP2500645B1 (de) * 2011-03-16 2015-01-28 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Sauerstoff-befeuerter Gasbrenner mit reduzierten NOx-Werten und Verbrennungsverfahren
WO2013097165A1 (en) * 2011-12-30 2013-07-04 American Air Liquide, Inc. Process for producing flat flame by oxy-solid fuel burner
US9334813B2 (en) * 2013-01-31 2016-05-10 Electro-Motive Diesel, Inc. Control system for a dual-fuel engine
DE102013012943B4 (de) * 2013-08-01 2018-03-22 Ee Emission Engineering Gmbh Verfahren zum Betreiben eines Mehrbrennersystems
US20160131382A1 (en) * 2014-11-12 2016-05-12 Howard Rosen Method and apparatus of networked thermostats providing for reduced peak power demand
US10584051B2 (en) * 2017-02-22 2020-03-10 Air Products And Chemicals, Inc. Double-staged oxy-fuel burner

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US20220074592A1 (en) 2022-03-10
MX2021007420A (es) 2021-08-05
BR112021011579A2 (pt) 2021-08-31
CN113195976A (zh) 2021-07-30
ES2894624T3 (es) 2022-02-15
WO2020126401A1 (fr) 2020-06-25
JP2022514328A (ja) 2022-02-10

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