EP3224543B1 - Strahlungsbrenner zur verbrennung von schädlichem gas - Google Patents

Strahlungsbrenner zur verbrennung von schädlichem gas Download PDF

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Publication number
EP3224543B1
EP3224543B1 EP15791023.3A EP15791023A EP3224543B1 EP 3224543 B1 EP3224543 B1 EP 3224543B1 EP 15791023 A EP15791023 A EP 15791023A EP 3224543 B1 EP3224543 B1 EP 3224543B1
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EP
European Patent Office
Prior art keywords
sintered metal
metal fibre
radiant burner
sleeve
combustion
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
EP15791023.3A
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English (en)
French (fr)
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EP3224543A1 (de
Inventor
Andrew Seeley
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Edwards Ltd
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Edwards Ltd
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Publication of EP3224543A1 publication Critical patent/EP3224543A1/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
    • F23D14/12—Radiant burners
    • F23D14/16—Radiant burners using permeable blocks
    • 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
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/105—Porous plates
    • F23D2203/1055—Porous plates with a specific void range
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/106—Assemblies of different layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/10—Burner material specifications ceramic
    • F23D2212/103—Fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F23D2212/201—Fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes
    • F23G2209/142—Halogen gases, e.g. silane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50007—Co-combustion of two or more kinds of waste, separately fed into the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/08—Controlling two or more different types of fuel simultaneously

Definitions

  • the present invention relates to a radiant burner and method.
  • Radiant burners are known and are typically used for treating an effluent gas stream from a manufacturing processing tool used in, for example, the semiconductor or flat panel display manufacturing industry. During such manufacturing, residual perfluorinated compounds (PFCs) and other compounds exist in the effluent gas stream pumped from the process tool. PFCs are difficult to remove from the effluent gas and their release into the environment is undesirable because they are known to have relatively high greenhouse activity.
  • PFCs perfluorinated compounds
  • Known radiant burners use combustion to remove the PFCs and other compounds from the effluent gas stream.
  • the effluent gas stream is a nitrogen stream containing PFCs and other compounds.
  • a fuel gas is mixed with the effluent gas stream and that gas stream mixture is conveyed into a combustion chamber that is laterally surrounded by the exit surface of a foraminous gas burner.
  • Fuel gas and air are simultaneously supplied to the foraminous burner to affect flameless combustion at the exit surface, with the amount of air passing through the foraminous burner being sufficient to consume not only the fuel gas supply to the burner, but also all the combustibles in the gas stream mixture injected into the combustion chamber.
  • the document GB 2 504 335 A describes the features of the preamble of claim 1.
  • a radiant burner for treating an effluent gas stream from a manufacturing process tool, an inlet for, in use, receiving the effluent gas stream, the radiant burner comprising: a sintered metal fibre sleeve through which, in use, combustion materials pass for combustion proximate to an inner combustion surface of the sintered metal fibre sleeve for combustion within a combustion chamber; and a ceramic fibre insulating sleeve surrounding the sintered metal fibre sleeve and through which, in use, the combustion materials pass.
  • the first aspect recognizes that in order to improve the energy efficiency of the processing or abatement of the effluent stream, it may be desirable for the radiant burner to be extinguished during periods of processing tool inactivity, which typically occurs during idle steps of the processing. However, the first aspect also recognizes that these idle steps may be frequent and of short duration, and that such rapid cycling can lead to premature failure of existing radiant burner sleeves or liners due to cracking.
  • a radiant burner treats an effluent gas stream emitted or exhausted from a manufacturing processing tool.
  • the radiant burner comprises a metal fibre sleeve which is sintered.
  • the combustion materials pass through the metal fibre sleeve in order to combust proximate or adjacent to an inner combustion surface of the metal fibre sleeve.
  • the radiant burner also comprises an insulating sleeve.
  • the insulating sleeve surrounds the metal fibre sleeve.
  • the combustion materials also pass through the insulating sleeve to reach the metal fibre sleeve.
  • a radiant burner is provided which does not crack due to rapid cycling caused by frequent idle steps during which the burner is extinguished.
  • the temperature within the radiant burner and the temperature of an outer surface of the radiant burner remain comparable with existing ceramic burners. This enables the radiant burner to be substituted in place of existing ceramic burners as a line-replaceable unit which does not suffer from cracking during such frequent and short-duration periods of process tool inactivity.
  • the sintered metal fibre sleeve has a porosity of 80-90%.
  • the sintered metal fibre sleeve has an air permeability of 150-300 cc/min/cm 2 .
  • the sintered metal fibre sleeve has a density of 690-1110 kg/m 3 .
  • the insulating sleeve has a density of 100-150 Kg/m 3 .
  • the sintered metal fibre sleeve is retained concentrically within the insulating sleeve.
  • the radiant burner comprises a support operable to retain the sintered metal fibre sleeve and the insulating sleeve.
  • the insulating sleeve is retained concentrically within the support.
  • the sintered metal fibre sleeve comprises a pleat extending circumferentially. Providing a pleat helps to accommodate changes in size of the sintered metal fibre sleeve at different temperatures.
  • the radiant burner comprises a temperature sensor thermally coupled with the sintered metal fibre sleeve and operable to provide an indication of a temperature of the sintered metal fibre sleeve. Accordingly, an indication of the temperature of the metal fibre sleeve may be provided in order that the operating temperature of the radiant burner can be established.
  • the temperature sensor is thermally coupled with the sintered metal fibre sleeve on an outer surface. Accordingly, the temperature sensor may be provided outside of a combustion chamber defined by the metal fibre sleeve in order to protect the temperature sensor from materials within the combustion chamber.
  • the radiant burner comprises a source operable to supply the combustion materials in one of a plurality of mix ratios selected in response to the temperature.
  • the mix ratio of the combustion materials may be varied in response to the temperature in order to optimize the operating conditions and/or temperature of the radiant burner.
  • the source is operable to supply the combustion materials in a substantially stoichiometric mix ratio when the temperature of the sintered metal fibre sleeve fails to exceed an operating temperature. Accordingly, a stoichiometric or fuel-rich mix ratio may be provided in order to improve the warm-up time of the radiant burner.
  • the source is operable to supply the combustion materials in a substantially lean mix ratio when the temperature of the sintered metal fibre sleeve exceeds an operating temperature. Accordingly, once a suitable operating condition has been reached, the fuel content may be reduced.
  • a method of operating a radiant burner for treating an effluent gas stream from a manufacturing process tool comprising: determining a temperature of an outer surface of a sintered metal fibre sleeve of the radiant burner through which combustion materials pass for combustion proximate to an inner combustion surface of the sintered metal fibre sleeve; and supplying the combustion materials in one of a plurality of mix ratios selected in response to the temperature.
  • the supplying comprises supplying the combustion materials in a substantially stoichiometric mix ratio when the temperature of the sintered metal fibre sleeve fails to exceed an operating temperature.
  • the supplying comprises supplying the combustion materials in a substantially lean mix ratio when the temperature of the sintered metal fibre sleeve exceeds an operating temperature.
  • the supplying comprises supplying the combustion materials in the substantially stoichiometric mix ratio for a selected time period.
  • the supplying comprises supplying the combustion materials in the substantially lean mix ratio upon expiry of the selected time period.
  • the radiant burner comprises the features of the first aspect.
  • Embodiments provide a radiant burner which is particularly suited to operate in a so-called "green mode", where the burner is extinguished during periods of processing tool inactivity (for example, during idle steps), these periods may be frequent and of short duration.
  • the radiant burner liner has a sintered metal fibre sleeve which is surrounded by an insulating sleeve, which replaces a typical ceramic radiant burner liner.
  • the combination of the sintered metal fibre sleeve and the insulating sleeve provides a radiant burner which operates under almost identical conditions and with improved efficiency compared with existing radiant burners, but which is able to resist shocks due to thermal cycling.
  • the mix of the combustion materials may be adjusted to make the mixture rich before reverting to lean conditions during normal operation.
  • FIG. 1 illustrates a radiant burner, generally 8, according to one embodiment.
  • the radiant burner 8 treats an effluent gas stream pumped from a manufacturing process tool such as a semiconductor or flat panel display process tool, typically by means of a vacuum-pumping system.
  • the effluent stream is received at inlets 10.
  • the effluent stream is conveyed from the inlet 10 to a nozzle 12 which injects the effluent stream into a cylindrical combustion chamber 14.
  • the radiant burner 8 comprises four inlets 10 arranged circumferentially, each conveying an effluent gas stream pumped from a respective tool by a respective vacuum-pumping system.
  • the effluent stream from a single process tool may be split into a plurality of streams, each one of which is conveyed to a respective inlet.
  • Each nozzle 12 is located within a respective bore 16 formed in a ceramic top plate 18 which defines an upper or inlet surface of the combustion chamber 14.
  • the combustion chamber 14 has side walls defined by an exit surface 21 of a foraminous burner element 20, which is illustrated schematically and shown in more detail in Figure 2 .
  • the burner element 20 is cylindrical and is retained within a cylindrical outer shell 24.
  • a plenum volume 22 is defined between an entry surface of the burner element 20 and the cylindrical outer shell 24.
  • a mixture of fuel gas, such as natural gas or a hydrocarbon, and air is introduced into the plenum volume 22 via inlet nozzles. The mixture of fuel gas and air passes from the entry surface 23 of the burner element to the exit surface 21 of the burner element for combustion within the combustion chamber 14.
  • the nominal ratio of the mixture of fuel gas and air is varied to vary the nominal temperature within the combustion chamber 14 to that which is appropriate for the effluent gas stream to be treated. Also, the rate at which the mixture of fuel gas and air is introduced into the plenum volume 22 is adjusted so that the mixture will burn without visible flame at the exit surface 21 of the burner element 20.
  • the exhaust 15 of the combustion chamber 40 is open to enable the combustion products to be output from the radiant burner 8.
  • the effluent gas received through the inlets 10 and provided by the nozzles 12 to the combustion chamber 14 is combusted within the combustion chamber 14 which is heated by a mixture of fuel gas and air which combusts near the exit surface 21 of the burner element.
  • Such combustion causes heating of the chamber 14 and provides combustion products, such as oxygen, typically with a nominal range of 7.5 % to 10.5 %, depending on the fuel air mixture (CH 4 , C 3 H 8 , C 4 H 10 ) and the surface firing rate of the burner, to the combustion chamber 14.
  • the heat and combustion products react with the effluent gas stream within the combustion chamber 14 to clean the effluent gas stream.
  • SiH 4 and NH 3 may be provided within the effluent gas stream, which reacts with O 2 within the combustion chamber to generate SiO 2 , N 2 , H 2 O, NOx.
  • N 2 , CH 4 , C 2 F 6 may be provided within the effluent gas stream, which reacts with O 2 within the combustion chamber to generate CO 2 , HF, H 2 O.
  • the foraminous burner liner 20 is constructed by rolling and seam welding a sintered metal fibre sheet 100 to a perforated screen 110, retained between flanges 120A, 120B.
  • the sintered metal fibre sheet 100 may be any suitable sintered metal fibre, such as SFF1-35, or SFFE-30 supplied by the FiberTech Company of South Korea alternatively S-mat or D-mat supplied by Micron Fiber-Tech Company of USA.
  • a sintered metal fibre has a porosity of between 80% and 90%, an air permeability of 150-300 cc/min/cm 2 , and a sheet density of around 694 to 1111 kg/m 3 .
  • a foraminous burner liner having the sintered metal fibre sheet welded to the perforated support 110 operates under identical conditions to existing ceramic foraminous burner liners.
  • a 152.4 mm (6 inch) internal diameter by 304.8 mm (12 inch) axial length foraminous burner liner having the sintered metal fibre sheet (and another example with a ceramic fibre blanket mentioned below) with a surface area of 145,931 mm 2 (226 inch 2 ) was fired using 36 slm of natural gas in 610 slm of air, which provided a surface burning rate of approximately 80 kW/m 2 (50,000 BTU/hr/ft 2 ) and a residual oxygen concentration of 9% (as measured when no effluent stream is present).
  • the warm-up time from cold for such an arrangement can be approximately 15 minutes. This can be shortened to less than 10 seconds by lighting off under stoichiometric conditions, before reverting to lean conditions after a short period such as, for example, 10 seconds.
  • the steady state temperature of the outer face 105 of the sintered metal fibre sheet 100 is higher than that of a ceramic foraminous burner liner (at 120-140°C compared to less than 50°C). This temperature climbs much more slowly than the combustion chamber 14 and so whilst it may not be possible to use this parameter to directly control the rich start, the outer face 105 temperature may be used beneficially to inhibit the rich start function.
  • a 152.4 mm (6 inch) internal diameter by 152.4 mm (6 inch) axial length foraminous burner liner having the sintered metal fibre sheet welded to the perforated support (and another example with the ceramic fibre blanket) having a surface area of 72,965 mm 2 (113 inch 2 ) was fired using 19 slm of natural gas in 310 slm of air, which provided a residual oxygen concentration of 9% (as measured when no effluent stream is present).
  • Nitrogen trifluoride abatement was measured as part of a simulated effluent stream with 200 l/min of nitrogen. As can be seen the combustion emissions (bare metal/insulated metal) when the effluent stream was then introduced are better than existing burners (ceramic).
  • the ceramic fibre blanket 130 is chosen so as to have a minimal pressure drop at the surface flow rates equivalent to the surface firing rates mentioned above. Typically somewhere between 6 and 12 mm, and preferably 10 mm, of commercially available blanket material such as Isofrax 1260 (calcium silicate) of 128 kg/m 3 density or Saffil (alumina) have acceptable performance, in the range of 40-60 Pa pressure drop at 0.1 m/s face velocity with a linear pressure-flow relationship. Both of these materials are available from Unifrax Limited.
  • Isofrax 1260 calcium silicate
  • Saffil alumina
  • thermocouple 140 which thermally couples with the outer surface 105 of the sintered metal fibre sheet 100.
  • the thermocouple 140 or other temperature sensor measures the temperature of the sintered metal fibre sheet 100.
  • a threshold value which indicates that the operating temperature of the combustion chamber 14 is lower than the operating temperature
  • the ratio of fuel to air is increased.
  • the ratio of fuel to air is decreased when the temperature reported by the thermocouple 140 exceeds the threshold value, which indicates that the operating temperature of the combustion chamber 14 exceeds the operating temperature.
  • a circumferential pleat may be provided within the sintered metal fibre sheet 100 to accommodate changes in the length of the sintered metal fibre sheet 100 at different temperatures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Gas Burners (AREA)
  • Incineration Of Waste (AREA)

Claims (7)

  1. Strahlungsbrenner (8) zur Behandlung eines Abgasstroms aus einem Fertigungsprozesswerkzeug, wobei der Strahlungsbrenner aufweist:
    einen Einlass (10) zur Aufnahme des Abgasstroms,
    eine Sintermetall-Faserhülse (20), durch welche im Betrieb Brennmaterialien zur Verbrennung nahe an einer inneren Brennfläche (21) der Sintermetall-Faserhülse zur Verbrennung innerhalb einer Brennkammer (14) gelangen;
    wobei der Strahlungsbrenner dadurch gekennzeichnet ist, dass eine Keramikfaserdecke-Isolierhülse (130) die Sintermetall-Faserhülse umschließt, durch welche im Betrieb die Brennmaterialien gelangen.
  2. Strahlungsbrenner nach Anspruch 1, wobei die Sintermetall-Faserhülse mindestens eines von einer Porosität von 80 bis 90 %, einer Luftdurchlässigkeit von 9000 bis 18000 cm3/s/cm2 (150 bis 300 cc/min/cm2) und einer Dichte von 690 bis 1110 kg/m3 hat.
  3. Strahlungsbrenner nach irgendeinem vorhergehenden Anspruch, wobei die Isolierhülse eine Dichte von 100 bis 150 kg/m3 hat.
  4. Strahlungsbrenner nach irgendeinem vorhergehenden Anspruch, wobei die Sintermetall-Faserhülse konzentrisch innerhalb der Isolierhülse gehalten ist.
  5. Strahlungsbrenner nach irgendeinem vorhergehenden Anspruch, mit einem Träger, der zum Halten der Sintermetall-Faserhülse und der Isolierhülse betreibbar ist.
  6. Strahlungsbrenner nach Anspruch 5, wobei die Isolierhülse konzentrisch innerhalb des Trägers gehalten ist.
  7. Strahlungsbrenner nach irgendeinem vorhergehenden Anspruch, wobei die Sintermetall-Faserhülse eine umfangsmäßig verlaufende Falte aufweist.
EP15791023.3A 2014-11-28 2015-11-02 Strahlungsbrenner zur verbrennung von schädlichem gas Active EP3224543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1421131.2A GB2532776A (en) 2014-11-28 2014-11-28 Radiant burner
PCT/GB2015/053287 WO2016083776A1 (en) 2014-11-28 2015-11-02 Radiant burner for noxious gas incineration

Publications (2)

Publication Number Publication Date
EP3224543A1 EP3224543A1 (de) 2017-10-04
EP3224543B1 true EP3224543B1 (de) 2021-04-14

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EP15791023.3A Active EP3224543B1 (de) 2014-11-28 2015-11-02 Strahlungsbrenner zur verbrennung von schädlichem gas

Country Status (9)

Country Link
US (1) US20170321893A1 (de)
EP (1) EP3224543B1 (de)
JP (1) JP6602864B2 (de)
KR (1) KR102501513B1 (de)
CN (1) CN107002997B (de)
GB (1) GB2532776A (de)
SG (1) SG11201703692TA (de)
TW (1) TWI682127B (de)
WO (1) WO2016083776A1 (de)

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GB2599898A (en) * 2020-10-07 2022-04-20 Edwards Ltd Burner Liner
CN117889445A (zh) * 2024-02-27 2024-04-16 上海高笙集成电路设备有限公司 一种无焰低温燃烧器及其使用方法

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EP3224543A1 (de) 2017-10-04
CN107002997A (zh) 2017-08-01
SG11201703692TA (en) 2017-06-29
GB2532776A (en) 2016-06-01
JP2018500529A (ja) 2018-01-11
TW201623880A (zh) 2016-07-01
GB201421131D0 (en) 2015-01-14
TWI682127B (zh) 2020-01-11
WO2016083776A1 (en) 2016-06-02
KR102501513B1 (ko) 2023-02-17
JP6602864B2 (ja) 2019-11-06
US20170321893A1 (en) 2017-11-09
KR20170092547A (ko) 2017-08-11
CN107002997B (zh) 2020-09-22

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