EP3868445B1 - Procede de securisation d'une centrale de combustion ou de gazeification contre les incendies - Google Patents

Procede de securisation d'une centrale de combustion ou de gazeification contre les incendies Download PDF

Info

Publication number
EP3868445B1
EP3868445B1 EP21153321.1A EP21153321A EP3868445B1 EP 3868445 B1 EP3868445 B1 EP 3868445B1 EP 21153321 A EP21153321 A EP 21153321A EP 3868445 B1 EP3868445 B1 EP 3868445B1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply system
plant
combustion
fire
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
EP21153321.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3868445A1 (fr
Inventor
Jean RIONDEL
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.)
Mini Green Power
Original Assignee
Mini Green Power
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 Mini Green Power filed Critical Mini Green Power
Publication of EP3868445A1 publication Critical patent/EP3868445A1/fr
Application granted granted Critical
Publication of EP3868445B1 publication Critical patent/EP3868445B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements
    • F23M11/02—Preventing emission of flames or hot gases, or admission of air, through working or charging apertures
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/026—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being put under pressure by means other than pressure gas, e.g. pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/102—Flashback safety, e.g. inertizing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/202—Feeding/conveying devices using screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature

Definitions

  • the present invention relates to the field of energy, and, more specifically, installations operating on the basis of combustion, gasification, or any other thermochemical process involving solid fuels.
  • It relates more particularly to a method for securing a solid fuel combustion or gasification plant against fires, said plant comprising a solid fuel combustion hearth, this hearth being supplied, with solid fuel, by a supply system .
  • It also relates to a solid fuel combustion or gasification plant equipped with means for implementing the aforementioned securing method.
  • Industrial solid fuel combustion or gasification power stations for example, biomass combustion, present, as do gas or fuel oil thermal power stations, risks of fires. Even if, in solid fuel combustion or gasification plants, the risk of explosion is minimal, it still remains, due to the presence of dust and the possibility of leakage of combustible gas resulting from the pyrolysis of solid fuel. . In addition, one of the most risky areas of solid fuel combustion or gasification plants is the fuel supply. The fire can indeed spread in this zone, and go up in the supply system towards the fuel reserve and thus cause significant damage to the plant.
  • Valve systems are the most widespread and certainly the oldest fire protection systems. They implement a hatch, pivoting around an axis, obstructing, if necessary, the passage between the hearth and the fuel supply.
  • the patent document US2873703 illustrates this technology for a coal-fired power plant.
  • guillotine systems are quite similar to clamshell systems.
  • a major difference between the guillotine systems and the flap systems concerns the setting in motion of the hatch.
  • guillotine systems it is a door guided in translation allowing the supply system to be separated into two distinct zones. It is essential to couple this type of system with a device that releases the biomass so as not to interfere with the travel of the hatch.
  • the patent document FR2615931 describes such a system. It should be noted that, in a guillotine system, the guillotine is raised above the rest of the feed to prevent the firebreak system from being blocked by excess material. It is ultimately an “intelligent” system, which restarts automatically when the temperature drops below a threshold.
  • Rotary systems consist of an assembly rotated around an axis inside the power system. Unlike the two previous systems, the rotary systems are sealed systems even during normal operating phases. These are valve-airlock type systems ensuring the distribution of the material and the sealing of the system.
  • the patent document CN178166860 illustrates this technology. It describes a system consisting of an airlock valve located above a hopper to prevent backfire.
  • thermocouple measures a temperature beyond the programmed threshold
  • auger automatically starts up and the system injects water as long as the temperature is too high.
  • the system thus sends wet biomass to the boiler.
  • patent document EP3015136 describes a solution for detecting fire outbreaks in a storage of biomass thanks to a continuous air humidity analyzer.
  • the biomass burns, the water contained in it evaporates, increasing the level of humidity in the air.
  • the patent document CN106056824 concerns a redundant and intelligent solution for detecting and fighting the risk of fire in biomass power plants. It includes two different sensors: a first set of thermocouples in contact with the biomass and an infra-red camera also allowing detection of the start of a fire. The two sensors are connected to an intelligent system controlling an extinguishing device. This device can be used in three configurations according to the wishes of the operator: fully automatic, remotely controlled or manual.
  • thermocouples directly installed in the biomass supply and connected to regulation valves which are themselves placed on a water injection system. When the thermocouples exceed the set value the valves open, injecting water into the biomass feed.
  • Solid fuels are very irregular.
  • the mechanical valve or guillotine systems are very often obstructed, preventing the correct isolation of the biomass.
  • installing mechanical systems and adapting the power supply to them is often very expensive.
  • Mechanical systems of the valve and guillotine types require regular maintenance and break down very easily. Rotating systems disrupt the proper supply of biomass, they are regularly responsible for jams and the formation of vaults. They are not suitable for irregular fuels.
  • a firestop system must interact with the hearth as little as possible. It seems essential not to inject soaked biomass into it so as not to damage it or make it unavailable for too long a time.
  • one problem that the invention proposes to solve is to provide a method for securing a solid fuel combustion or gasification plant comprising a solid fuel combustion hearth, said hearth being fed , solid fuel, by a supply system, which overcomes the aforementioned drawbacks of the prior art.
  • the solid fuel comprises biomass, solid recovered fuels and/or waste
  • the solid fuel supply system comprises at least one endless screw, the solid fuel being brought to the combustion hearth by said at least one endless screw;
  • the supply system comprises a first worm screw positioned substantially horizontally with respect to the ground and a second worm screw positioned at the terminal end of the first worm screw, and the solid fuel is conveyed, from a fuel storage tank arranged upstream of the first endless screw to the combustion chamber arranged downstream of the second endless screw, by means of the first then the second endless screw;
  • - for the formation of the fuel plug and for the creation of the empty fuel space in the fuel supply system said at least one endless screw is operated in reverse after having injected the liquid into the contained fuel in the fuel system;
  • the solid fuel supply system of the plant further comprises one or more sensors, and the method further comprises a step according to which, by means of said sensors, a fire rising in the fuel supply system is detected ;
  • the sensors are temperature sensors, CO 2 sensors, infrared sensors
  • the proposed solution of the invention to the aforementioned problem has the second object of a solid fuel combustion or gasification plant secured against fires, for the implementation of the method as described above, comprising a fuel combustion hearth solid fuel, said hearth being supplied with solid fuel by a supply system, characterized in that it further comprises means for injecting a non-flammable liquid into the supply system, means for forming a fuel in the fuel supply system, and means for creating an empty fuel space in the fuel supply system.
  • the supply system comprises at least one endless screw and at least one non-flammable liquid injector.
  • the most risky phases of solid fuel combustion or gasification plants are the extinguishing phases.
  • the fuel the oxidizer or the heat source, also called the trigger element.
  • the heat source is present from the start-up phase of the installation until the total cooling of the plant which can take place several hours after the extinction. of it. It is very difficult for a solid fuel to be isolated from the air. Separating the oxidizer and the fuel under these conditions is not an conceivable solution.
  • One objective achieved by the invention is therefore to insulate the fuel from the heat source to prevent any outbreak of fire. In the event that a fire is declared, the energy released by the reaction between the oxygen and the fuel maintains the combustion. To fight the fire, the invention makes it possible to deprive the reaction of one of these reagents by installing a fire barrier system.
  • the method according to the invention is a complete method for preventing and combating the risk of fire, the main source of this risk being the rise of fire in a solid fuel supply system in a thermal power plant.
  • This risk exists in particular in several cases, namely, when the plant is shut down in normal operation, or during a malfunction of the plant which may be due to - a technical problem with the extraction of fumes, - the use of fuel not suitable for the thermal power plant, - human error when controlling the power plant, or - a failure of the control/command system which causes the system to shut down, for example stopping the fuel supply or the draft fan.
  • the invention relates in particular to a method for securing or protecting a thermal power plant of solid fuel combustion or gasification against fires.
  • the solid fuel used in such plants is, in one example, biomass, solid recovered fuels (SRF) and/or waste such as household waste. These are then fuels whose structure and nature are not homogeneous. However, it may be other fuels, for example fossil fuels such as coal.
  • Combustion power stations are thermal power stations, which produce electrical energy and/or thermal energy from a heat source, produced by the combustion of solid fuel in a combustion hearth.
  • the combustion hearth 1 of a combustion plant 2 is supplied with solid fuel 3, by a supply system 4.
  • the solid fuel supply system 4 comprises at least one endless screw 4-1, 4-2 and the biomass 3 is conveyed to the combustion hearth 1 by said at least one endless screw 4-1, 4-2.
  • the feed system 4 comprises a first endless screw 4-1 positioned substantially horizontally relative to the ground and a second endless screw 4-2 positioned at the end of the first endless screw 4- 1, substantially vertically.
  • the solid fuel 3 is conveyed from a storage tank 5 arranged upstream of the first endless screw 4-1 to the combustion hearth 1 arranged downstream of the second endless screw 4-2 using the first 4-1 and then the second 4-2 auger.
  • the method according to the invention is characterized in that it comprises the steps below.
  • a non-flammable liquid is injected into the fuel contained in the fuel supply system.
  • This is, in one example, water.
  • the injection is carried out by means of one or more injectors 6-1, 6-2, 6-3 distributed along the supply system and, in particular, along the first endless screw 4.1, namely the horizontal auger. These injectors are represented by arrows on the figure 1 .
  • These injectors 6-1, 6-2, 6-3 form an extinguishing device installed on the power supply independent of the extinguishing means of the general fire-fighting system, which is generally present for all power plants.
  • the non-flammable liquid injected wets the fuel 3 contained in the supply system and forms agglomerates of wet fuel, at the location of the injections of liquid.
  • a plug 7 of fuel 3 is formed in the fuel supply system 4 .
  • Such a plug 7 is shown schematically in figure 2B .
  • the endless screw 4-1 is operated in reverse, that is to say in the opposite direction to its normal direction of operation.
  • the wet fuel agglomerate does not move with the same speed through the auger as the fuel that has not been wetted.
  • the fuel which has not been wetted, and which is located downstream of the wetted fuel, will settle on the agglomerate and the agglomerate itself will undergo compacting.
  • the plug 7 results from the compaction of the agglomerate under the action of the reverse movement of the endless screw and the settling of the fuel downstream of the agglomerate.
  • the hardness of the plug 7 obtained in the endless screw is of the order of that of a champagne cork. It is therefore very hard.
  • a space 8 empty of fuel is created in the fuel supply system.
  • This empty space 8 partly results from the settling of the non-wet biomass forming the plug 7, but also from the fact that the endless screw operates in reverse and that no fuel source is brought to the entrance of the endless screw.
  • the solid fuel supply system of the plant further comprises one or more sensors.
  • sensors are advantageously temperature sensors rated TC on the picture 3 , For thermocouple, CO 2 sensors, IR infrared sensors and/or humidity sensors.
  • the plant is advantageously equipped with an automaton.
  • the aforementioned sensors then communicate with said automaton.
  • the automaton controls the steps of the method according to the invention, namely the injection of the non-flammable liquid into the fuel contained in the fuel supply system and/or the formation of the fuel plug in the supply system fuel and/or the creation of a fuel void in the fuel supply system.
  • the aforementioned automaton is, in an exemplary implementation of the invention, the automaton ensuring the control and command of the plant. It is denoted Principal Control-Command PLC on the picture 3 .
  • One function of this automaton is finally to make the sensors communicate with the fuel supply extinguishing device. It also allows alarms to be sent to the operator via the man-machine interface.
  • the automaton triggers the extinguishing device of the biomass feed system.
  • This extinguishing device comprises the means for bringing water to the injectors from the water supply and/or the public water network, and the means for controlling the rotation of the endless screws and in particular of the horizontal endless screw that reverses.
  • the securing method according to the invention does not exclude the presence of a general security system.
  • firefighting intended to allow fires to be extinguished throughout the plant.
  • a general system operates on a power supply different from the particular combat system according to the invention described above and, preferably, on a back-up power supply in the event of a power cut. It is also composed of three parts communicating with each other.
  • a system of sensors arranged throughout the plant for example, UV or IR sensors intended for the detection of fire on battery or temperature sensors, CO 2 or even 'humidity.
  • sensors are placed at different locations in the plant where a fire risk has been identified, for example at the fuel storage location, at the level of the conveyors, on the smoke filtration system, at the level of the power electronics.
  • the sensors are at least doubled.
  • This automaton has a backup electrical power source and/or independent of the electrical network.
  • This automaton autonomously manages the fire sensors and the triggering of fire alarm and extinguishing actions. It also communicates alarms to the control-command automaton managing the plant.
  • the method according to the invention forms an effective fire-fighting system, which makes it possible both to prevent the risk of fire and to fight it if a fire breaks out.
  • the fire risk is very present, but combustion is also the heart of the business and, consequently, the source of income. Faced with such an important issue, it is inconceivable that a technical or mechanical problem could jeopardize the entire installation.
  • the method according to the invention makes it possible to prevent this risk.
  • Fire prevention consists of a series of actions carried out automatically when the plant is shut down, which is the most risky phase. This shutdown can occur following a normal shutdown requested by an operator, or following a a sudden and/or unforeseeable incident due to human errors or technical failures.
  • a preventive routine comprising two phases has been put in place.
  • a first phase renders the fuel present in the supply system non-flammable. It can be an injection of water which soaks the fuel and makes it incombustible. THE fuel present in the conveyor cannot then catch fire.
  • a second phase makes it possible to form a plug of fuel while creating an “empty” space of fuel. This makes it possible to limit the risks of fire or smoke rising via the supply system thanks to the wet fuel plug formed. This also serves as a double safety in case the first action fails. Indeed, the empty space limits the risk of fire rising and the fuel plug formed makes it possible to slow down the fire and reduce the supply of air to the combustion in progress.
  • the plug formed is thus advantageously permanent until the total cooling of the plant. It will be evacuated to restarting it.
  • said plant can automatically go into the so-called safety position when stopped in order to limit human, material and fire risks.
  • the two preventive phases presented above are put in place, namely the injection of a liquid to make the fuel non-flammable and the implementation of an automatic sequence of the conveyor creating an empty space in fuel and a "plug" of fuel.
  • the method according to the invention therefore has numerous advantages responding to the problems posed by the prior art.
  • the entire corrective system is redundant. This repetition makes it possible not to jeopardize the entire installation for a simple technical problem or a fault in the sensors.
  • the energy systems allowing the operation of the two preventive and corrective parts are totally differentiated. This makes it possible to maintain protection in the event of a power supply fault for either of them.
  • the preventive system in particular the fuel system firebreak system, is a simple device suitable for solid fuels. Due to the absence of any additional mechanical element dedicated to the firebreak device, this system is very inexpensive and robust.
  • the backfire prevention system is spatially limited to the fuel supply, which preserves the hearth of the plant.
  • the plant can be shut down for two reasons: either the operator decides to shut down the plant and shuts it down via a Human-Machine Interface; either an incident occurs and triggers the implementation plant security. Under these conditions, an accelerated shutdown procedure is triggered in order to quickly cool the plant and cut off all fuel supply.
  • steps are implemented in an automatic sequence of water injection and formation of a fuel plug.
  • the vertical screw is stopped to stop the supply of fuel to the reactor.
  • a solenoid valve opens to inject mains water into the auger to moisten the fuel.
  • the horizontal auger moves back to create a plug of wet fuel while creating an empty space of biomass. Water is regularly injected to ensure that no fire rises.
  • control-command sequence making it possible to spray the fuel and form the fuel plug during a normal shutdown is given in the flowchart shown in figure 4 .
  • the sequence during an accidental stop will be close in terms of flowchart.
  • the timings, the quantities of water injected and the recoil speeds of the screws will be different and depend on the fuel and the configuration of the plant.
  • the plant according to the invention therefore comprises two completely independent and redundant corrective systems. These are the particular fire fighting system relating to the fuel supply and the general fire fighting system.
  • the fuel supply being the most sensitive point, it is important to ensure redundancy of the fire protection system at this point.
  • the particular fire fighting system of the present invention is as described herein. They are summarized below. The entire system runs on the power grid and has a battery system in case of a power outage.
  • thermocouples that measure the temperature at three different points in the fuel system. They are fixed on the chute of the conveyor screw. These thermocouples are transmitters which communicate their information to the control-command of the plant.
  • Level 1 alarm for the operator, no particular action.
  • Level 2 opening of the solenoid valve used in the preventive system which is connected to the water network.
  • Level 3 transmission of the alarm to the general fire safety PLC. This last level makes it possible to make a redundancy on the injection of water because the system triggered by the general fire safety automaton uses another source of water, namely an independent tank.
  • This system consists of three parts. It is first of all a pipe fed by pressurized water from the drinking water network. It is then a solenoid valve communicating with the control-command system as well as a manual bypass valve, the latter allowing an operator to act directly and water the biomass even without electricity or without a PLC. if it detects a fire. Finally, it is a injection nozzle disposed directly inside the fuel supply system.
  • the general fire-fighting system is part of a larger system for fighting against industrial risks such as the production of CO, CH 4 or H 2 .
  • it comprises, according to the invention, three redundant and independent parts of the particular control system relating to the fuel supply. These three parts are presented below.
  • UV/IR flame detectors To ensure the redundancy of the measurement which detects any flames.
  • UV and IR sensors use 2 technologies, UV and IR, in order to increase the relevance of the measurement. They communicate their information to a independent safety automaton. They work with an internal battery.
  • this automaton triggers the general extinguishing system of the power plant, warns the operator and the staff by an audible and visual signal, and transmits the alarm to the programmable industrial automaton.
  • the automaton works thanks to an internal battery.
  • This system is made up of different parts: - a reserve of 10 m 3 of water, the volume depending on the size of the plant and the storage areas; - a diesel pump to send water from the tank to the entire fire network; - a fire water network independent of the public water network and completely dedicated to this system, connected to the tank and the pump; and - a set of water injection nozzles positioned above each biomass store, fuel conveying system or other area with an identified fire risk.
  • the pump starts automatically and sends water from the tank through the fire network.
  • the water is then projected to all the places likely to be on fire. This makes it possible to be certain of sending water to the place of the fire but also to avoid a runaway effect.
  • all the other zones likely to bring a load to the fire are moistened and inhibited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Solid-Fuel Combustion (AREA)
  • Incineration Of Waste (AREA)
EP21153321.1A 2020-02-18 2021-01-25 Procede de securisation d'une centrale de combustion ou de gazeification contre les incendies Active EP3868445B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2001598A FR3107338B1 (fr) 2020-02-18 2020-02-18 Procédé de sécurisation d’une centrale de combustion ou de gazéification contre les incendies

Publications (2)

Publication Number Publication Date
EP3868445A1 EP3868445A1 (fr) 2021-08-25
EP3868445B1 true EP3868445B1 (fr) 2023-03-22

Family

ID=70918574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21153321.1A Active EP3868445B1 (fr) 2020-02-18 2021-01-25 Procede de securisation d'une centrale de combustion ou de gazeification contre les incendies

Country Status (6)

Country Link
EP (1) EP3868445B1 (pl)
ES (1) ES2942141T3 (pl)
FR (1) FR3107338B1 (pl)
MA (1) MA53940B1 (pl)
PL (1) PL3868445T3 (pl)
PT (1) PT3868445T (pl)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873703A (en) 1955-06-02 1959-02-17 V & E Products Inc Safety device for preventing hopper fires in coal furnaces
SE443637B (sv) * 1980-04-01 1986-03-03 Ake Ekenberg Span- eller fliseldningsaggregat for vermepannor
DE3518576A1 (de) * 1985-05-23 1986-11-27 Stubinen Utveckling AB, Stockholm Vorrichtung zum verbrennen und/oder thermischen zersetzen von brennmaterial, insbesondere festen brennstoffen
FR2615931A1 (fr) 1987-05-26 1988-12-02 Raas Jean Bernard Dispositif de securite d'incendie pour les chaudieres a combustible solide
RU2287474C1 (ru) 2005-05-03 2006-11-20 Дмитрий Борисович Кучин Устройство противопожарной защиты винтовых конвейеров (варианты)
CN202554782U (zh) 2012-04-27 2012-11-28 泰安市泰山东城热电有限责任公司 生物质锅炉给料机自动灭火系统
DE202014104897U1 (de) * 2014-10-14 2014-10-28 Lasco Heutechnik Gmbh Mobile Festbrennstofffeuerungsanlage
US20160117900A1 (en) 2014-10-27 2016-04-28 Ian Hibbitt Methods for detecting fires in biomass storage systems
CN106056824B (zh) 2016-08-01 2018-08-03 国网节能服务有限公司 一种生物质电厂料场火灾监测管理系统
CN108166860A (zh) 2017-12-25 2018-06-15 深圳迈辽技术转移中心有限公司 一种基于特征识别模块的保密安全锁

Also Published As

Publication number Publication date
MA53940B1 (fr) 2023-05-31
PT3868445T (pt) 2023-04-11
FR3107338A1 (fr) 2021-08-20
PL3868445T3 (pl) 2023-05-02
FR3107338B1 (fr) 2022-12-30
MA53940A (fr) 2022-03-23
ES2942141T3 (es) 2023-05-30
EP3868445A1 (fr) 2021-08-25

Similar Documents

Publication Publication Date Title
US9421551B2 (en) Pulverizer mill protection system
CA2507562C (fr) Dispositif d'extinction de feu par injection d'un gaz genere par la combustion d'un bloc pyrotechnique
CN202289283U (zh) 煤仓自动防火灭火装置
JP2011240295A (ja) 防火装置を備えた廃棄物破砕設備及びその運転方法
EP3868445A1 (fr) Procede de securisation d'une centrale de combustion ou de gazeification contre les incendies
EP2300104B1 (fr) Tete d'aspersion
KR101110514B1 (ko) 자동 소화기능을 구비한 펠릿 보일러
CN217210279U (zh) 一种回转窑进料系统温控电磁阀蒸汽灭火系统
CN205402812U (zh) 厨房防火系统
CN221522902U (zh) 籽棉缓存箱
CN106139450A (zh) 磨煤机惰化灭火系统
FR2919506A1 (fr) Installation de protection contre les incendies
CN203183548U (zh) 磨煤机惰化灭火保护系统
KR101562440B1 (ko) 미분기의 화재 감시장치 및 방법
EP1531910A2 (fr) Installation d exercice pour l entrainement de personne s a l extinction d un feu
CN221142358U (zh) 一种带三级灭火系统的沥青热再生滚筒
CN113819484A (zh) 一种防止锅炉灭火保护误动的方法及系统
EP2808605B1 (fr) Procédé de sécurisation d'un équipement de combustion industrielle
KR200380098Y1 (ko) 화재 진화 시스템
CN222983597U (zh) 干冰膨化线热端及火险控制装置
EP0484475A1 (fr) Systeme de securite pour installation de chauffage a combustion
FR3085856A1 (fr) Chandelle seche pour reseau sous vide d'extinction d'incendie
CN209605172U (zh) 伴生气放空燃烧监测控制火炬
WO2023249477A1 (fr) Systeme d'allumage automatique pour dispositifs de lutte antigel
WO2018037193A1 (fr) Procede de gestion d'une panne de vanne de demarrage d'une turbomachine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220210

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602021001649

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: A62C0003000000

Ipc: F23K0003140000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: A62C 35/02 20060101ALI20220516BHEP

Ipc: A62C 3/06 20060101ALI20220516BHEP

Ipc: F23M 11/02 20060101ALI20220516BHEP

Ipc: F23K 3/14 20060101AFI20220516BHEP

INTG Intention to grant announced

Effective date: 20220601

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602021001649

Country of ref document: DE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3868445

Country of ref document: PT

Date of ref document: 20230411

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20230405

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1555506

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230415

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2942141

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20230530

REG Reference to a national code

Ref country code: MA

Ref legal event code: VAGR

Ref document number: 53940

Country of ref document: MA

Kind code of ref document: B1

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230622

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1555506

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230623

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230722

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602021001649

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

26N No opposition filed

Effective date: 20240102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20210125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20210125

VSFP Annual fee paid to validation state [announced via postgrant information from national office to epo]

Ref country code: MA

Payment date: 20240124

Year of fee payment: 4

VSFP Annual fee paid to validation state [announced via postgrant information from national office to epo]

Ref country code: MA

Payment date: 20250127

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230322

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20251218

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20251223

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20251222

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20260127

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20260209

Year of fee payment: 6

Ref country code: MC

Payment date: 20260122

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20260114

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20260119

Year of fee payment: 6

Ref country code: IT

Payment date: 20260107

Year of fee payment: 6

VSFP Annual fee paid to validation state [announced via postgrant information from national office to epo]

Ref country code: MA

Payment date: 20260107

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20260203

Year of fee payment: 6