EP3108183A1 - Brûleur à récupération muni d'un échangeur de chaleur supplémentaire - Google Patents

Brûleur à récupération muni d'un échangeur de chaleur supplémentaire

Info

Publication number
EP3108183A1
EP3108183A1 EP15704328.2A EP15704328A EP3108183A1 EP 3108183 A1 EP3108183 A1 EP 3108183A1 EP 15704328 A EP15704328 A EP 15704328A EP 3108183 A1 EP3108183 A1 EP 3108183A1
Authority
EP
European Patent Office
Prior art keywords
recuperator
heat exchanger
air
burner
burner according
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.)
Withdrawn
Application number
EP15704328.2A
Other languages
German (de)
English (en)
Inventor
Joachim G. Wünning
Joachim A. Wünning
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.)
WS Warmeprozesstechnik GmbH
Original Assignee
WS Warmeprozesstechnik GmbH
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 WS Warmeprozesstechnik GmbH filed Critical WS Warmeprozesstechnik GmbH
Publication of EP3108183A1 publication Critical patent/EP3108183A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • 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
    • F23D14/126—Radiant burners cooperating with refractory wall surfaces
    • 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
    • F23D14/46—Details
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/10005—Arrangement comprising two or more beds in separate enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99001—Cold flame combustion or flameless oxidation processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the invention relates to a recuperative burner, which is particularly suitable for use in industrial furnaces.
  • the exhaust heat can be partially recovered by air preheating.
  • a Rekuperatorbrenner for heating a jet pipe is known, said Rekupera ⁇ torbrenner for cooling the wall-side flange and the wall has a fresh air flowed through heat exchanger, which surrounds the recuperator concentrically.
  • EP 1 995 516 B1 discloses a recuperator Known burner, which has a bundle rank ⁇ flattened, fresh air leading tubes for air preheating, which are arranged in an exhaust gas stream leaving the furnace chamber in an annulus ⁇ .
  • This recuperator can be used to improve air preheating and increase efficiency to over 80%.
  • the use is limited to exhaust gas temperatures up to about 1000 ° C. This raises especially in industrial burners lower power below 200 kW the problem at a reasonable cost and at high exhaust gas temperatures ⁇ to achieve a high combustion efficiency.
  • combustion efficiencies of over 80% are aimed at at exhaust gas temperatures of over 1000 ° C.
  • the recuperative burner has a townenburggewin ⁇ tion arrangement with a recuperator and a Rekupera ⁇ tor annularly enclosing additional heat exchanger, where ⁇ in the recuperator and the additional heat exchanger, both of the exhaust gases and the fresh air are respectively flowed through serially.
  • This inflowing Frischlauft is heated to ⁇ next by the additional heat exchanger and then by the Rekupe ⁇ rator.
  • Outflowing exhaust gas is first cooled in the Re ⁇ kuperator and then in the additional heat exchanger.
  • the directions of flow of the burner supplied air are also different in the auxiliary heat exchanger and the recuperator, preferably opposite to each other ⁇ .
  • the Bren ⁇ nerflansch may be cooled and heat removed from here the system so be returned to the system.
  • Flanschkühler provide a bypass channel so that only a portion of the total the Bren ⁇ ner supplied air flows through the Flanschkühler and another part of the heat exchanger arrangement ⁇ di rectly fed.
  • the satellite heat exchanger has a specific heat transfer area of at least 0.04 m 2 / kW. This is preferably with a countercurrent heat exchanger made of metal pipes or metal sheet achieved. With this specific Heat Transf ⁇ transfer area of the supplementary heat exchanger in combination a Feue ⁇ approximately efficiency of more than 80% can be achieved with a recuperator made of ceramic or metal.
  • the additional heat exchanger preferably has a plurality of mutually parallel air channels. These can be formed, for ⁇ In play through pipes that are arranged in an exhaust passage. As tubes in particular flat tubes with non-circular air ducts into consideration. Preferably, the flat tubes have slit-like channels, to obtain a particularly ho ⁇ hes surface / volume ratio. A so-formed out ⁇ additional heat exchanger made of metal can achieve a high transmission efficiency in a compact package.
  • the annular additional heat exchanger may be a building ⁇ unit or consist of a plurality of segment-like units, the composite result in the annular réelletau ⁇ shear.
  • the heat exchanger can also have the shape of a slotted o- of the partially open ring.
  • the recuperator is preferably formed by an inside of the air and the outside of exhaust gas flowed around or pipe, which consists of ceramic or a high temperature resistant metal.
  • the recuperator is preferably a profile tube which can projecting Before ⁇ cracks having inwardly and / or outwardly in order to improve the heat transfer between hot flue gases and already preheated air.
  • the extending through the additional heat exchanger recuperator is preferably against a projection provided on the Rajicar ⁇ exchanger seat resiliently tensioned and Schemedich ⁇ tet.
  • the recuperator can be easily be expanded. In addition, it can be held stress-free in this way.
  • the inventive concept also allows the arrangement of the heat exchanger assembly in a fresh-air-flow housing which is held in this manner on niedri ⁇ gen temperatures.
  • the ge through the housing ⁇ induced fresh air of the heat exchanger assembly can be supplied.
  • Figure linen recuperative burner according to the invention in a simplified longitudinal sectional view of a furnace wall.
  • Figure 2 shows the recuperative burner of Figure 1 in cross-section ⁇ , cut along the line II-II and
  • Figure 3 is a diagram illustrating Wär ⁇ me antique and temperature profile in the jacket (2004)illerano ⁇ rd Vietnamese recuperator burner according to the invention.
  • a recuperative burner 10 is veran ⁇ illustrated, which is provided for heating a furnace wall 11 enclosed by a furnace chamber 12.
  • the burner 10 extends through an opening 13 provided in the furnace wall 11, to which the recuperative burner 10 is attached.
  • the recuperative burner 10 has a burner head 14, whose housing 15 is held with a flange 16 on the furnace wall 11.
  • a seat 17 for receiving a flange of a jet pipe 18 is provided, which extends through the opening 13 and serves to emit radiant heat into the furnace ⁇ space 12 inside.
  • the jet pipe 18 is from the inside, preferably by flameless oxidation, and, where appropriate, ⁇ heated but also otherwise.
  • the housing 15 encloses a space in which a heat exchanger assembly 19 is arranged. This serves to fresh air, which is supplied to the housing 15 via an air connection 20 to heat by means of exhaust heat. As a result, the exhaust gas loses heat and leaves the heat exchanger arrangement 19 and the housing 15 at an exhaust gas connection 21.
  • the recuperator 23 may be a metal tube or high exhaust gas temperatures also Kera ⁇ mikrohr. It may be formed as a smooth-walled cylinder tube or as shown as a profiled tube with radially inwardly and / or outwardly projecting projections 24, for example in the form of hollow teeth or the like.
  • the recuperator tube 23 encloses with its inner ⁇ side an air duct 25th
  • recuperator 22 is replaced by an additional heat exchanger.
  • enclosed exchanger 26 the tubular inner wall 27 together with the Rekuperatorrohr 23 an exhaust passage 28 be ⁇ limits.
  • the exhaust duct 28 and the air duct 25 are flowed through in Ge ⁇ genides. The flow direction in the air duct
  • the air duct 25 of the recuperator ⁇ 22 is separated by a pipe 31 of one or more Gaslei ⁇ lines 32, 33 or other fuel lines, the various modes enable, such as AufMapbe ⁇ drive or flameless operation.
  • the recuperator pipe 23 has a flange 34 or other connection with which it is held against a seat of the auxiliary exchange exchanger 26.
  • the seat can by egg ⁇ ne planar, conical or otherwise formed annular surface on an upper housing surface 35 of the additional heat exchanger
  • the flange 34 is pressed against the seat by spring-loaded bolts 36 or similar means.
  • the bolts 36 can réellere ⁇ ck by an egg ⁇ nem housing cover 37 held insulator body 38. By removing the housing cover 37 is the
  • the additional heat exchanger 26 has at least one, preferably a plurality of air channels 39, which are preferably enclosed by flattened tubes 40.
  • the housing ⁇ tubes 40 may have round ends in the plate or surface 35 and the bottom 41 in round ⁇ ff- be tightly grasped.
  • the tubes 40 but preferably flattened, so that the air passages are formed slit-like. 39 Before ⁇ preferably, the gap width is less than 3 mm to a value limited in order to achieve an intensive thermal contact Zvi ⁇ rule air and the pipe wall.
  • the tubes 39 are arranged in an exhaust passage 42 of the additive exchange exchanger 26, which is flowed through by exhaust gas in a direction away from the insulator body 38 toward the housing bottom 41.
  • the tubes 40 are flowed through in the opposite direction of fresh air.
  • the exhaust duct 42 is surrounded on the outside by a peripheral wall 43, which defines a fresh air duct 44 with the housing 15. This leads to a flange cooler 45.
  • the flange cooler 45 has a Lucaska ⁇ nal 46, which extends to the flange of the steel pipe 18 before ⁇ in this and from there to the petitionariatau ⁇ shear 26 extends.
  • Fuel line 32 gradually reduced and turned off. It is formed in the jet a large-scale, in figure 1 indicated by arrows hot gas swirl of be fed to the combustion ⁇ material and air to ren flameless to oxidizing.
  • In the jet pipe 18 prevail temperatures before ⁇ preferably above 1000 ° C.
  • Exhaust gas with an exhaust gas temperature TAI for example, 1250 ° C flows on the outside of the recuperator ⁇ pipe 23 along 28 through the exhaust passage 3 veran ⁇ illustrates the temperature drop of the exhaust gas at the Rekupe ⁇ ratorrohr 18.
  • TAI exhaust gas temperature
  • At the open end of the inner wall 27 enters the somewhat cooled exhaust gas from the Exhaust duct 28 with Rich ⁇ tion reversal in the exhaust passage 42 of the additional heat exchanger 26 via ( Figure 1 arrow bundle 47). It then flows through the exhaust passage 42 along the tubes 40 to the port 21 and leaves there clearly cooled with a temperature, for example, of 450 ° C the terminal 21st
  • the port 20, for example, with ambient temperature TL1 ⁇ (20 ° C) supplied fresh air is heated in the fresh air duct 44 at first only slightly. It reaches with a slightly elevated temperature of, for example 50 ° C, the flange cooler 45 and then occurs, for example, 250 ° C he ⁇ warms in the air channels 39 of the additional heat exchanger 26 a. Here it is heated on its way from the flange of the beam ⁇ pipe 18 away to, for example 900 °, after which it flows under a ⁇ Rich ⁇ power reversals in the air duct 25 of the recuperator 22nd Through their existing here high temperature occurring at the recuperator 22 thermi ⁇ rule stresses are kept low.
  • a Rekuperatorbren ⁇ ner 10 is equipped with an additional heat exchanger 26 which surrounds the recuperator 22, wherein both the recuperator and the additional heat exchanger preferably designed as pure countercurrent heat exchanger are, wherein the additional ⁇ heat exchanger 26, the air is supplied to the furnace wall 11 facing ⁇ th side.
  • the specific Heat Transf ⁇ transfer area of the supplementary heat exchanger is preferably more than 0.04 m 2 / kW fuel performance.
  • the housing 15 can be cooled by the additional heat ⁇ exchanger 26 with cold air from the inside.
  • Au ⁇ ßerdem at least optionally, the air first be fed to a Flanschkühler 45 to the area of the flan ⁇ ULTRASONIC 16 before here are high exhaust gas temperature to Schütting ⁇ zen. This is particularly advantageous in the application of the beam ⁇ pipe 18th
  • the ceramic Rekuperatorrohr 26 is resiliently pressed against an exit-side surface 35 of the Rajariatau ⁇ shear 26 and sealed. This benefits the maintenance.
  • the additional heat exchanger 26 has preferential ⁇ as gap-shaped air ducts. 39 Preferably these are formed in flattened tubes 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Gas Burners (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne un brûleur à récupération muni d'un échangeur de chaleur supplémentaire. L'invention vise à améliorer le rendement de brûleurs à récupération, de préférence au-delà de 80 %. A cet effet, un brûleur à récupération (10) est équipé d'un échangeur de chaleur supplémentaire (26) qui entoure le récupérateur (22), à la fois le récupérateur et l'échangeur de chaleur étant réalisés sous la forme d'un pur échangeur de chaleur à contre-courant, l'air étant amené à l'échangeur de chaleur supplémentaire (26) sur le côté faisant face à la paroi (11) de four. La surface spécifique d'échange de chaleur de l'échangeur de chaleur supplémentaire présente de préférence une puissance de combustion supérieure à 0,04 m2/kW. Le carter (15) entourant l'échangeur de chaleur supplémentaire (26) peut de plus être refroidi de l'intérieur par de l'air froid. Au moins optionnellement, l'air peut en outre être amené au refroidisseur de bride (45) pour protéger la zone de la bride (16) de la température encore élevée de l'effluent gazeux. Ceci est particulièrement avantageux en cas d'utilisation dans des tubes radiants (18). Le tube céramique de récupérateur (26) est de manière avantageuse comprimé élastiquement contre une surface (35) de l'échangeur de chaleur supplémentaire (26) côté sortie, et rendu étanche, ce qui facilite l'entretien. L'échangeur de chaleur supplémentaire (26) comporte de manière avantageuse des canaux d'air (39) de préférence en forme de fente, qui sont de préférence ménagés dans des tubes aplatis (40).
EP15704328.2A 2014-02-21 2015-02-16 Brûleur à récupération muni d'un échangeur de chaleur supplémentaire Withdrawn EP3108183A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14156188.6A EP2910855B1 (fr) 2014-02-21 2014-02-21 Brûleur à récupérateur avec échangeur de chaleur supplémentaire
PCT/EP2015/053241 WO2015124539A1 (fr) 2014-02-21 2015-02-16 Brûleur à récupération muni d'un échangeur de chaleur supplémentaire

Publications (1)

Publication Number Publication Date
EP3108183A1 true EP3108183A1 (fr) 2016-12-28

Family

ID=50137574

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14156188.6A Active EP2910855B1 (fr) 2014-02-21 2014-02-21 Brûleur à récupérateur avec échangeur de chaleur supplémentaire
EP15704328.2A Withdrawn EP3108183A1 (fr) 2014-02-21 2015-02-16 Brûleur à récupération muni d'un échangeur de chaleur supplémentaire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14156188.6A Active EP2910855B1 (fr) 2014-02-21 2014-02-21 Brûleur à récupérateur avec échangeur de chaleur supplémentaire

Country Status (5)

Country Link
US (1) US10161632B2 (fr)
EP (2) EP2910855B1 (fr)
JP (1) JP6645975B2 (fr)
KR (1) KR102357468B1 (fr)
WO (1) WO2015124539A1 (fr)

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US10458646B2 (en) 2014-09-25 2019-10-29 Selas Heat Technology Company Llc Low NOx, high efficiency, high temperature, staged recirculating burner and radiant tube combustion system
RU2622357C1 (ru) * 2015-12-24 2017-06-14 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Газовая плоскопламенная горелка со встроенным радиационным рекуператором
US10031049B1 (en) * 2016-10-17 2018-07-24 Florida Turbine Technologies, Inc. High temperature high pressure non-vitiated heater
AU2018256499B2 (en) * 2018-10-30 2025-07-10 Haemers Technologies sa Heating device
CN109340748A (zh) * 2018-12-13 2019-02-15 广州威茨热能技术有限公司 一种二次预热烧嘴
EP3864345B1 (fr) * 2019-06-21 2025-11-05 Econova GmbH Brûleur pour réduire les émissions de nox et procédé permettant de faire fonctionner le brûleur
DE102022100480A1 (de) * 2022-01-11 2023-07-13 Ibs Industrie-Brenner-Systeme Gmbh Brennervorrichtung für die indirekte Erwärmung eines Ofenraums
DE102022123350A1 (de) 2022-09-13 2024-03-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Heizsystem mit einem Brenner und einem Rekuperator
CN116717912B (zh) * 2023-05-19 2025-08-01 西安交通大学 一种圆柱形预混水冷燃烧挤压铝翅片换热紧凑氢气壁挂炉

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Also Published As

Publication number Publication date
WO2015124539A1 (fr) 2015-08-27
JP6645975B2 (ja) 2020-02-14
US20170067634A1 (en) 2017-03-09
KR20160122738A (ko) 2016-10-24
EP2910855A1 (fr) 2015-08-26
KR102357468B1 (ko) 2022-02-04
EP2910855B1 (fr) 2020-04-29
JP2017506323A (ja) 2017-03-02
US10161632B2 (en) 2018-12-25

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