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EP2116790B1 - Four avec un dispositif de son nettoyage - Google Patents

Four avec un dispositif de son nettoyage Download PDF

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Publication number
EP2116790B1
EP2116790B1 EP09159677A EP09159677A EP2116790B1 EP 2116790 B1 EP2116790 B1 EP 2116790B1 EP 09159677 A EP09159677 A EP 09159677A EP 09159677 A EP09159677 A EP 09159677A EP 2116790 B1 EP2116790 B1 EP 2116790B1
Authority
EP
European Patent Office
Prior art keywords
combustion
combustion chamber
heat exchanger
exchanger surfaces
burner
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
EP09159677A
Other languages
German (de)
English (en)
Other versions
EP2116790A1 (fr
Inventor
Helmut Jäger
Kai Wendker
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.)
Solvis GmbH and Co KG
Original Assignee
Solvis GmbH and Co KG
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 Solvis GmbH and Co KG filed Critical Solvis GmbH and Co KG
Publication of EP2116790A1 publication Critical patent/EP2116790A1/fr
Application granted granted Critical
Publication of EP2116790B1 publication Critical patent/EP2116790B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/06—Systems for accumulating residues from different parts of furnace plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/01009—Controls related to ash or slag extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits

Definitions

  • the invention relates to a firing device, comprising a burner which burns fuel and thereby generates hot combustion gases, with flues through which the combustion gases are passed from the burner, the burner with a flame and a combustion chamber is oriented horizontally and has a horizontal axis, with heat exchanger surfaces in the flues, with which heat from the combustion gas can be transferred to a heat transfer medium, with a cleaning device, with the combustion residues from the heat exchanger surfaces are cleaned, and a suction device, can be sucked with the whirled combustion residues.
  • Continuously operated industrial furnaces must be freed from incineration residues from time to time. This applies to solid fuel firing as well as pellet firing or wood firing. Particularly in the case of solids firing, larger quantities of ash, soot or slag or other combustion residues can form. These residues are deposited on surfaces of heat exchangers of the furnace. By this deposition, the heat transfer is hindered, which is to be done in the heat exchanger, usually called heat exchanger, from the furnace to a heat transfer medium.
  • This heat transfer medium is usually water or a fluid composed of water.
  • a method and a furnace for reducing nitrogen oxide formation when burning fossil fuels are known. It has flue gas flow paths between a jacket and a combustion chamber and branches off partial streams of a cooled flue gas into the combustion chamber in order to achieve cooling and thus reduction of nitrogen oxide formation.
  • a boiler is charged with pellets.
  • these pellets are burned, burning a flame in an afterburner ring or other downstream elements.
  • These flue gases are led into flues.
  • the flue gases are possibly redirected several times. They run over heat exchanger surfaces, which can be quite complex depending on the concrete structure.
  • the combustion air can be routed horizontally over entire or partial sections and the flues can be constructed very compact. In this leadership of the combustion air can also be elements for different purposes.
  • Such a pellet boiler is freed about once a day via a vibrator via an eccentric engine of combustion residues on the heat exchanger surfaces in the flue gas trains.
  • the elements in the flue gas trains such as cleaning springs, are to be considered. Due to gravity, the residues fall into a collecting container, which is significantly less thermally stressed compared to the hot combustion zone. From the collecting container can then be transported via a transport device, such as a screw conveyor, the combustion residues in a collecting container.
  • Vibrating devices also have the disadvantage of occasionally transmitting vibrations very far, which is not desirable acoustically.
  • Mechanically vibrating devices are very complex, relatively expensive and due to the required moving parts also error prone.
  • the object of the invention is therefore to propose an improvement for the purification of combustion residues in industrial furnaces.
  • a generic firing device in that the cleaning device has a nozzle assembly is blown with the compressed air periodically and / or at desired times on the heat exchanger surfaces, which stirs up the combustion residues that the flues arranged in the form of an annular space around the combustion chamber are and the combustion gases outside the combustion chamber by 180 ° deflected horizontally lead in the opposite direction to the flame of the burner.
  • the cherries exclusivelytrager- or exchange surfaces of a furnace for example, with a pellet boiler by means of injection of compressed air automatically and periodically cleaned.
  • the combustion residues, which are stirred up by the compressed air can also be extracted at a suitable point at the same time, without the combustion gases escaping into the installation space.
  • a pellet boiler which is a low-temperature boiler.
  • the pellet boiler with its combustion chamber, the combustion gases leading flues and the heat exchanger surfaces is surrounded by a large storage tank.
  • the storage container contains the heat transfer medium.
  • a so-called thermo ring is provided. This is a cylindrical, with a fluid, in particular a liquid, filled jacket. The heat from the combustion gases is therefore first released via the heat exchanger surfaces of the fluid in this thermo ring and then from this to the heat transfer medium in the memory.
  • the cleaning device can be used in particular in a compact integrated in the memory pellet boiler, which can be compared to the prior art also reduced to a much smaller size of only one-third.
  • the combustion chamber of the boiler can preferably be made interchangeable via a flange on the memory.
  • the leadership of the combustion air is preferably carried out horizontally in two trains, so that it is possible that the fuel supply and the exhaust gas removal takes place from one side into the memory.
  • It may be a boiler for hot water production, a furnace for hot air generation, or a furnace for process purposes.
  • a welded-on nozzle channel is used on an exhaust gas ring channel.
  • a Stirling engine in addition to the combustion chamber, a Stirling engine is used for cogeneration. Especially with such a combination it can be used that hot flue gases for operation the Stirling engine can be provided with good efficiency available, which is supported by the cleaning possible with the invention of this good efficiency and also the automatic operation of the Stirling Engine is favored by the fact that a mechanical cleaning is no longer required.
  • FIG. 1 shows in schematic form a firing device according to the invention.
  • This firing device 10 serves to heat a heat transfer medium 21 in a storage tank 20.
  • the firing device 10 has a burner 11 which generates a flame 12.
  • the burner 11 burns, for example, a solid fuel (not shown), for example pellets.
  • the flame 12 burns in the illustrated embodiment after leaving a horizontally oriented flame tube 13 horizontally in a combustion chamber insert 14, in the FIG. 1 to the right.
  • the combustion chamber insert 14 is constructed approximately cylindrical.
  • thermo ring He is filled with a fluid, in particular a liquid.
  • this fluid in the cylindrical shell 18 the heat exchanger surfaces 16, the absorbed heat energy from.
  • This fluid in the thermo ring in turn then gives the heat energy to the heat transfer medium 21 in the storage container 20 from.
  • the interposition of the thermo ring or the cylindrical shell 18 has the purpose to prevent too cold a liquid in the memory that a condensation of components from the combustion gases 15 takes place on the heat exchanger surfaces 16 and thereby possibly affect the cleaning.
  • a cleaning device 30 is provided at the end of the annular space with the heat exchanger surfaces 16, at which the exhaust gas duct 17 branches off.
  • This cleaning device 30 has a nozzle arrangement 31, which in the illustrated embodiment is a nozzle ring.
  • This nozzle assembly 31 with the nozzle ring carries a series of nozzles that can deliver compressed air into the annulus.
  • This nozzle arrangement 31 with the nozzle ring is arranged shortly before the diversion of the exhaust gas channel 17 from the annular space with the heat exchanger surfaces 16 and the heat transfer ribs and in particular directly welded.
  • a control device (not shown) is provided, for example, periodically once a day in a particular situation compressed air from the
  • a suction device which has a solenoid valve 32 and a suction tube 33.
  • the suction pipe 33 is connected to a vacuum cleaner (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Air Supply (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Incineration Of Waste (AREA)

Claims (10)

  1. Dispositif de chauffe, comprenant
    un brûleur (11) qui brûle un combustible, et engendre ainsi des gaz chauds de combustion (15) ;
    des conduits à gaz de fumées, par lesquels lesdits gaz de combustion (15) sont guidés à la sortie dudit brûleur (11),
    lequel brûleur (11) est orienté horizontalement, par une flamme (12) et une chambre de combustion (14), et présente un axe horizontal ;
    des surfaces (16) d'échange thermique qui sont situées dans lesdits conduits à gaz de fumées et par l'intermédiaire desquelles de la chaleur, émanant desdits gaz de combustion (15), peut être transmise à un agent caloporteur (21) ;
    un dispositif de nettoyage (30) au moyen duquel des résidus de combustion peuvent être éliminés desdites surfaces (16) d'échange thermique ;
    un dispositif (32, 33) d'évacuation par aspiration au moyen duquel des résidus de combustion, animés de tourbillons ascendants, peuvent être évacués par aspiration, caractérisé par le fait
    que le dispositif de nettoyage (30) offre un ensemble de buses (31) par lequel de l'air comprimé, imprimant des tourbillons ascendants aux résidus de combustion, est pulsé sur les surfaces (16) d'échange thermique de façon périodique, et/ou à des instants souhaités ; que les conduits à gaz de fumées sont agencés sous la forme d'une chambre annulaire, autour de la chambre de combustion (14), et guident les gaz de combustion (15) à l'extérieur de ladite chambre de combustion (14) avec déflexion de 180°, horizontalement et en sens inverse de la direction de la flamme (12) du brûleur (11).
  2. Dispositif de chauffe selon la revendication 1,
    caractérisé par le fait
    que l'ensemble de buses (31) présente une bague d'insufflation qui compte plusieurs buses, et pulse l'air comprimé dans une chambre annulaire présentant les surfaces (16) d'échange thermique.
  3. Dispositif de chauffe selon la revendication 2,
    caractérisé par le fait
    que la bague d'insufflation est rapportée, par soudage, au voisinage de canaux (17) à gaz évacués.
  4. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par le fait
    que la délivrance du combustible à la chambre de combustion (14), et l'évacuation des gaz de combustion (15) dans un canal (17) à gaz évacués, s'opèrent du même côté de ladite chambre de combustion (14).
  5. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par
    la présence d'un dispositif de commande qui actionne une vanne, de préférence une électrovanne (32) en fonction de la délivrance de l'air comprimé, assurée par l'ensemble de buses (31), et active ainsi un dispositif d'évacuation par aspiration.
  6. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par le fait
    que le brûleur (11) est réalisé, avec la chambre de combustion (14), sous la forme d'une chambre de combustion à basse température.
  7. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par le fait
    que la chambre de combustion (14) est fixée à une bride, de manière libérable, conjointement au brûleur (11) et aux conduits à gaz de fumées.
  8. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par
    la présence d'un dispositif d'accumulation qui est dédié à l'agent caloporteur (21) et entoure la chambre de combustion (14), les conduits à gaz de fumées affectés aux gaz de combustion (15), et les surfaces (16) d'échange thermique.
  9. Dispositif de chauffe selon la revendication 8,
    caractérisé par le fait
    que les surfaces (16) d'échange thermique sont séparées de l'agent caloporteur (21) par l'intermédiaire d'une enveloppe cylindrique (18) emplie d'un fluide, et transmettent tout d'abord la chaleur, émanant des gaz de combustion (15), au fluide renfermé par ladite enveloppe cylindrique, puis audit agent caloporteur (21) à partir de ladite enveloppe.
  10. Dispositif de chauffe selon l'une des revendications précédentes,
    caractérisé par
    la présence additionnelle d'un moteur Stirling, en vue d'un couplage force-chaleur.
EP09159677A 2008-05-07 2009-05-07 Four avec un dispositif de son nettoyage Active EP2116790B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008022696A DE102008022696A1 (de) 2008-05-07 2008-05-07 Feuerungseinrichtung mit einer Reinigungseinrichtung

Publications (2)

Publication Number Publication Date
EP2116790A1 EP2116790A1 (fr) 2009-11-11
EP2116790B1 true EP2116790B1 (fr) 2011-03-09

Family

ID=40863531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09159677A Active EP2116790B1 (fr) 2008-05-07 2009-05-07 Four avec un dispositif de son nettoyage

Country Status (4)

Country Link
EP (1) EP2116790B1 (fr)
AT (1) ATE501401T1 (fr)
DE (2) DE102008022696A1 (fr)
ES (1) ES2361386T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053694A1 (de) 2008-10-29 2010-05-06 Solvis Gmbh & Co. Kg Zusatzanordnung für eine Feuerungseinrichtung
ITCS20120020A1 (it) * 2012-05-16 2013-11-17 Ungaro Srl Termostufa o termocaldaia a pellet dotata di un sistema di pulizia
AT513734B1 (de) * 2012-12-04 2022-12-15 Oekofen Forschungs Und Entw M B H Heizkessel mit Wärmekraftmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377132A (en) * 1981-02-12 1983-03-22 Texaco Development Corp. Synthesis gas cooler and waste heat boiler
US4562885A (en) * 1983-08-29 1986-01-07 General Resource Corporation Plate heat exchanger and pressure blast cleaner
DE3905762A1 (de) 1989-02-24 1990-08-30 Heim Hermann Masch Verfahren und feuerungsanlage zum reduzieren der stickoxidbildung beim verbrennen fossiler brennstoffe
DE4006742A1 (de) * 1990-03-03 1991-09-05 Messerschmitt Boelkow Blohm Heizungs- und stromerzeugungsanlage
DE4305962A1 (de) * 1993-02-26 1994-09-01 Kurt Dipl Ing Heim Heizkessel zur Verbrennung von Brennstoffen
DE19918103C2 (de) 1999-04-22 2001-03-29 Ralf Wiesel Vorrichtung zum Reinigen der Brennkammer und/oder der Rauchgaszüge eines Heizkessels
DE10226685A1 (de) * 2002-06-15 2004-01-08 Robert Bosch Gmbh Heizgerät mit Brenner und Wärmeübertrager
US7624470B2 (en) * 2004-08-17 2009-12-01 Heyman Keith A Heat exchange coil cleaning apparatus
DE202006016963U1 (de) 2006-11-03 2007-02-08 Maxxtec Ag Reinigungsvorrichtung für Wärmeübertrager sowie Wärmeübertrager

Also Published As

Publication number Publication date
ATE501401T1 (de) 2011-03-15
DE502009000422D1 (de) 2011-04-21
EP2116790A1 (fr) 2009-11-11
DE102008022696A1 (de) 2009-11-12
ES2361386T3 (es) 2011-06-16

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