EP2221536A1 - Brûleur, installation et procédé de séchage de produits divisés mettant en oeuvre un tel brûleur. - Google Patents

Brûleur, installation et procédé de séchage de produits divisés mettant en oeuvre un tel brûleur. Download PDF

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Publication number
EP2221536A1
EP2221536A1 EP10305143A EP10305143A EP2221536A1 EP 2221536 A1 EP2221536 A1 EP 2221536A1 EP 10305143 A EP10305143 A EP 10305143A EP 10305143 A EP10305143 A EP 10305143A EP 2221536 A1 EP2221536 A1 EP 2221536A1
Authority
EP
European Patent Office
Prior art keywords
burner
drying
products
dryer
gases
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Withdrawn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
EP10305143A
Other languages
German (de)
English (en)
French (fr)
Inventor
Christian Labarde
Franck Beaumont
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.)
Maguin SAS
Original Assignee
Maguin SAS
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 Maguin SAS filed Critical Maguin SAS
Publication of EP2221536A1 publication Critical patent/EP2221536A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • 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
    • F23D14/24—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 at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/10—Supplementary heating arrangements using auxiliary fuel
    • F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
    • 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

Definitions

  • the invention relates generally to drying installations for divided products, for example divided products from the sugar industry or derived from the distillation of starch products (wheat, etc.) or beetroot, or from the wood industry.
  • the treatments carried out in the industrial installations generate solid residues, designated by the term "pulp” in beet sugar or "distillers” in distillation, which are generally intended to be used in the form of granules for animal feed and which must be dried in order to allow their preservation. This is also the case of alfalfa, intended for animal feed.
  • the drying is generally carried out in a dryer, for example a drum, in which the calories are provided by a previously heated drying gas through a furnace provided with a burner.
  • Drying is an important energy item in sugar units or distillation units.
  • EP-B-0 457 203 describes an installation and a method of drying a substance in a drying drum and in which, downstream of the drum of drying, a separating device is used to recover, on the one hand, the dry substances and, on the other hand, a substantially gaseous fraction, part of which is intended to be heated to be reinjected at the inlet of the drying drum and of which another part is partially reinjected as an oxidizer in a combustion chamber dedicated to heating the drying gases.
  • the object of the invention is therefore to overcome this disadvantage and to allow combustion of the substances or compounds present in the gases from a drum dryer at a higher temperature capable of destroying all of these products or compounds as well as the odors likely to be released during the operation of a drying installation.
  • the object of the invention is therefore, according to a first aspect, a burner for the destruction of substances, in particular uncondensed residues from a condenser of a drying installation, this burner being intended to be supplied with fuel, with oxidant and substances to burn.
  • the burner has an axial feed inlet for feeding the residue burner, and a set of fuel injection nozzles distributed around the axial feed inlet.
  • the gases recovered at the outlet of the dryer, and in particular the non-condensable fraction of these gases can be burned at a temperature above 1000 ° C, thereby eliminating all compounds, including volatile organic compounds or VOCs, CO and odors.
  • the latter further comprises means for driving the residues in an axial swirling motion.
  • the means for vortexing the residues comprises a set of radial vanes disposed at the feed inlet.
  • the burner comprises a substantially frustoconical inlet portion whose apex is situated in the vicinity of the supply inlet, said frustoconical portion comprising means for supplying the burner with oxidant.
  • the invention also relates, according to a second aspect, to an installation of divided products, in particular of distillation products, comprising a drum dryer receiving, at the inlet, the divided products to be dried and supplied with drying gas heated by means of a hearth associated with a heat exchanger, a separation device for recovering, at the outlet of the dryer, the dried products and the drying gases, and drying gas condensation means.
  • the furnace comprises a burner as defined above, supplied with uncondensed residues from the condensation means so that, in operation, said residues are injected in the center of a flame maintained in the home.
  • the temperature of the residue injection zone is at least 1000 ° C.
  • this installation comprises a distribution device that communicates with the exchanger, on the one hand, and with the condensation means, on the other hand, the distribution device being able to distribute the gases from the dryer between the condensation means on the one hand, and the dryer, via the heat exchanger, on the other hand.
  • This installation may furthermore comprise means for supplying dilution gas capable of lowering the temperature of the hearth.
  • the dilution gas supply means comprise a connector disposed in the vicinity of the outlet of the fireplace.
  • the installation may further comprise a drying gas washing stage disposed upstream of the condensation means.
  • the installation may further comprise means for supplying the burner with oxidant capable of providing a sample of ambient air, via an exchanger.
  • It may further comprise a second pipe capable of taking a part of the gaseous effluents from the installation to supply the burner hearth with dilution gas able to lower the temperature at the outlet of the hearth.
  • the condensing means comprise a secondary circuit for heat recovery. This circuit is intended for the use of the heat captured by the condensing means.
  • the circuit in which the gases flowing from the dryer flow may comprise means capable of keeping the circuit in depression.
  • FIG. 1 schematically shows the general architecture of a drying facility substances.
  • this plant is intended for drying distillation byproducts, starch products, wheat or other, or products from sugar mill or sugar beet distillery facilities.
  • the installation is essentially based on the use of a drum dryer 1 which receives, at input E, wet grains which are supplied to it in the form of a cake and which delivers, at the outlet S, dry grains D and gases G which are partly intended, after heating by means of a heat exchanger 2, to be reinjected as the heating gas at the inlet of the drum dryer 1.
  • the installation comprises: a furnace F with a burner 3 and serving to supply the exchanger 2 with hot gases; a separating device 4 comprising a lock 4a at the outlet of the dryer 1 and a cyclone 4b, used to separate the dry grains D gas G exit S dryer 1; a distributor 5 for distributing the gaseous fraction G from the main separator 4, between a first gaseous fraction G1 and a second fraction G2 which is supplied to the exchanger 2; and a condenser 6 which serves to condense the first gas fraction G1 from the distributor 5 and from which condensates 25 exit.
  • this washing device 7 comprises a chamber 8 provided with a set of nozzles, such as 9, projecting a curtain of water in the path of the gases and thus causing a projection of the particles against the walls of the the room 8 to be evacuated, out.
  • the installation also comprises a system 10 for feeding the dryer 1 with wet grains.
  • This system 10 essentially comprises a transfer belt conveyor 11 which incorporates a circulation of an air stream heated by a secondary circuit of hot water heated in the condenser 6 by partial condensation of the first fraction G1 in order to provoke, so, a pre-drying of the cake that is provided.
  • the installation Downstream of the supply system 10, the installation comprises a set of conveyors, such as 12, ensuring the transfer of wet grains to the dryer 1.
  • upstream of the dryer 1, and the grains are mixed with a syrup s prepared for example by concentration of a clarified vinasse itself obtained, e.g., by physical separation such as centrifugation, vinasse collected in foot of distillation column.
  • a transfer conveyor 13 ensures the recovery of dry grains from the separator 4 so that they can be used later for animal feed in the form of granules.
  • the first gas fraction G1 coming from the distributor 5 is intended, by condensation, to constitute a source of hot water that can be used for supplying all types of devices or installations requiring a supply of hot water.
  • the condensation can be used to heat a secondary circuit of water for pre-drying the cake at the supply system 10.
  • Part of the condensates 25 can also be used to carry out the preliminary washing of the first gaseous fraction G1 within the washing device 7.
  • the condensates can also be used for any other application requiring a hot water supply, for example, as illustrated, for preheating the oxidant withdrawn from the outside.
  • the heating gases of the exchanger 2 are delivered by the furnace F at the input of which the burner 3 is placed.
  • the furnace is supplied on the one hand with fuel, for example natural gas, or biogas, and with oxidant removed from the furnace. outside and preheated, by heat exchange at the outlet of the exchanger 2.
  • the hearth F also has the function of burning the non-condensed residues of the fraction G1 of the separate heating gases at the outlet of the dryer 1.
  • the burner 3 essentially comprises an enclosure 14 which has an axial passage 15 through which the uncondensed gaseous fraction G1, which comes from the condenser 6 and which carries compounds to be destroyed (CO, COV, etc.), is introduced.
  • a set of injection nozzles 16 oriented coaxially with the passage 15 and evenly distributed around this passage 15.
  • Downstream considering the flow direction of the uncondensed particles in the burner 3, it comprises a frustoconical portion connected by its aperture at the passage 15 and pierced with orifices, such as 17, regularly distributed throughout the conical portion for supplying the oxidizer burner taken from the outside by means of an ambient air suction fan 18 associated with a pipe 24 opening into the burner 3 through an exchanger.
  • This conical portion is also provided with a pilot burner B and a flame detection cell C vis-à-vis.
  • the oxidant is preheated on the one hand by the condensates 25, and on the other hand by the combustion gases exiting the exchanger 2, by means of an additional output module of the exchanger.
  • This heating of the oxidant taken from the outside contributes to obtaining a high flame temperature.
  • the feed passage 15 is provided with means for driving the incident particles in an axial swirling motion.
  • these means are arranged in the form of a set of fixed radial fins 19 arranged in the passage 15, here six in number as an example.
  • the burner in operation, emits a flame in the form of a warhead, the non-condensed residues being directly injected at the center of the flame at very high temperature, that is to say at a temperature above 1000 ° C.
  • the hot gases are used to heat the fraction G2 of the heating gases by means of the exchanger 2.
  • the heating gases from the furnace are extracted by an extractor 20 to be evacuated to the outside, free of particle and odor.
  • a fraction of these gases is recovered and is reinjected in the vicinity of the outlet of the furnace F by means of a pipe 21 and a connection 22, as a dilution gas in order to lower the temperature of the gases delivered in exit from the fireplace at the exchanger.
  • the connector 22 is preferably located in the vicinity of the outlet of the fireplace or, in any case, at a distance from the fuel injection nozzles in the burner, to avoid cooling the flame.
  • the entire circuit in which the heating gases circulate, and in particular the fraction G2 of the heating gases, constitutes an almost closed circuit. These gases are set in motion by the action of a fan 23 provided at the level of the secondary separation device 5.
  • this closed circuit makes it possible to avoid the admission of additional air, to limit the air inlets at the junctions of the dryer 1 and, in particular, to obtain a dew point greater than 90 ° C, and in particular of the order of 95 ° C, which has the advantage, on the one hand to allow to obtain a high condensing efficiency in the condenser 6, and on the other hand, to ensure, in the circuit almost closed, a low oxygen level (less than 10% by volume expressed on wet gas), which keeps the circuit outside its flammability range.

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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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Gasification And Melting Of Waste (AREA)
EP10305143A 2009-02-18 2010-02-11 Brûleur, installation et procédé de séchage de produits divisés mettant en oeuvre un tel brûleur. Withdrawn EP2221536A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0951065A FR2942295B1 (fr) 2009-02-18 2009-02-18 Bruleur, installation et procede de sechage de produits divises mettant en oeuvre un tel bruleur

Publications (1)

Publication Number Publication Date
EP2221536A1 true EP2221536A1 (fr) 2010-08-25

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ID=41351559

Family Applications (1)

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EP10305143A Withdrawn EP2221536A1 (fr) 2009-02-18 2010-02-11 Brûleur, installation et procédé de séchage de produits divisés mettant en oeuvre un tel brûleur.

Country Status (5)

Country Link
US (1) US20100223806A1 (ru)
EP (1) EP2221536A1 (ru)
CA (1) CA2692319A1 (ru)
FR (1) FR2942295B1 (ru)
RU (1) RU2521525C2 (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2854835A1 (en) * 2013-06-27 2014-12-27 Anaergia Inc. Spray dryer exhaust treatment and anaerobic digester
CN104342897B (zh) * 2013-08-08 2016-11-23 苏州三星电子有限公司 一种干衣机蒸汽喷头的安装结构以及干衣机
SG10201502704VA (en) * 2015-04-07 2016-11-29 Singnergy Corp Pte Ltd Apparatus and method for improved evaporation drying
CN107940935A (zh) * 2017-11-13 2018-04-20 上海燕龙基再生资源利用有限公司 组合式三筒烘干机及其控制方法
CN115435582B (zh) * 2022-08-31 2023-09-05 青岛海信日立空调系统有限公司 多级余热回收烘干系统及其控制方法
CN116928665B (zh) * 2023-08-28 2024-05-14 京威汽车设备有限公司 加热器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107450A (en) * 1981-10-14 1983-04-27 Shell Int Research Process for combusting hydrogen sulphide-containing gases and burner for use in such a process
EP0457203A1 (de) * 1990-05-18 1991-11-21 SC Technology AG Verfahren zum emissionsfreien Trocknen einer Substanz in einer Trocknungstrommel
US5807094A (en) * 1997-08-08 1998-09-15 Mcdermott Technology, Inc. Air premixed natural gas burner

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Publication number Priority date Publication date Assignee Title
SU1116282A1 (ru) * 1983-07-26 1984-09-30 Наладочно-Ремонтное Производственно-Техническое Предприятие "Энергобумпром" Теплогенератор
GB8526978D0 (en) * 1985-11-01 1985-12-04 Foster Wheeler Energy Ltd Chemical process fired heaters &c
US5040470A (en) * 1988-03-25 1991-08-20 Shell Western E&P Inc. Steam generating system with NOx reduction
RU2066029C1 (ru) * 1994-01-20 1996-08-27 Акционерное общество "Рыльсксахар" Топка жомосушилки
US5511970A (en) * 1994-01-24 1996-04-30 Hauck Manufacturing Company Combination burner with primary and secondary fuel injection
US5685156A (en) * 1996-05-20 1997-11-11 Capstone Turbine Corporation Catalytic combustion system
DE19654008B4 (de) * 1996-12-21 2006-08-10 Alstom Brenner
RU2192136C1 (ru) * 2001-05-03 2002-11-10 Харин Владимир Михайлович Способ сушки свекловичного жома
US7303388B2 (en) * 2004-07-01 2007-12-04 Air Products And Chemicals, Inc. Staged combustion system with ignition-assisted fuel lances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107450A (en) * 1981-10-14 1983-04-27 Shell Int Research Process for combusting hydrogen sulphide-containing gases and burner for use in such a process
EP0457203A1 (de) * 1990-05-18 1991-11-21 SC Technology AG Verfahren zum emissionsfreien Trocknen einer Substanz in einer Trocknungstrommel
EP0457203B1 (de) 1990-05-18 1993-09-29 SC Technology AG Verfahren zum emissionsfreien Trocknen einer Substanz in einer Trocknungstrommel
US5807094A (en) * 1997-08-08 1998-09-15 Mcdermott Technology, Inc. Air premixed natural gas burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"LEADING BURNER DESIGNS FOR SULPHUR PLANTS", SULPHUR, BRITISH SULPHUR PUBLISHING, LONDON, GB, no. 224, 1 January 1993 (1993-01-01), pages 23 - 28,30, XP000328309, ISSN: 0039-4890 *

Also Published As

Publication number Publication date
RU2521525C2 (ru) 2014-06-27
FR2942295A1 (fr) 2010-08-20
RU2010105798A (ru) 2011-08-27
US20100223806A1 (en) 2010-09-09
CA2692319A1 (fr) 2010-08-18
FR2942295B1 (fr) 2011-04-15

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