EP0304532A1 - Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer - Google Patents

Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer Download PDF

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Publication number
EP0304532A1
EP0304532A1 EP87850246A EP87850246A EP0304532A1 EP 0304532 A1 EP0304532 A1 EP 0304532A1 EP 87850246 A EP87850246 A EP 87850246A EP 87850246 A EP87850246 A EP 87850246A EP 0304532 A1 EP0304532 A1 EP 0304532A1
Authority
EP
European Patent Office
Prior art keywords
combustion
burner
tubular furnace
chamber
combustion chamber
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.)
Granted
Application number
EP87850246A
Other languages
English (en)
French (fr)
Other versions
EP0304532B1 (de
Inventor
Nils ÖSTBO
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP19870850246 priority Critical patent/EP0304532B1/de
Priority to DE8787850246T priority patent/DE3766618D1/de
Publication of EP0304532A1 publication Critical patent/EP0304532A1/de
Application granted granted Critical
Publication of EP0304532B1 publication Critical patent/EP0304532B1/de
Expired legal-status Critical Current

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Classifications

    • 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 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • 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
    • F23G7/066—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 preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators

Definitions

  • the present invention refers to a combustion plant includ­ing at least one tubular furnace, having at one end a burner provided with means for receiving gaseous fluid taking part in the combustion, and having its opposite end connected to an after-combustion chamber, by way of a restricted passage.
  • An aim of the present invention is to propose a simple and efficient combustions plant, which makes possible an energy saving, while handling big gas volumes.
  • the invenion is characterized in the inlet for the gaseous combustion fluid being slotformed, and connected tangentially to the tubular furnace, and in an axially displaceable disc having a centrally located opening surrounding the burner, for dividing the gaseous fluid flow into a primary part to the burner and a secondary part forming a rotating flow within the tubular furnace.
  • the disc is preferably provided with a funnel-shaped member directed axially into the tubular furnace for initially keeping the primary and the secondary gas flows apart.
  • the after-combustion chamber preferably has a diameter noticably exceeding that of the tubular furnace, and has, at least at parts of its envelope shell, slots being directed tangentially outwards in the direction of the rotation of the combustion gas flow, the slots communicating with a collecting chamber enclosing the after-combustion chamber.
  • the after-combustion chamber may communicate with a number of smoke gas tubes, arranged concentrically around the tubular combustion chamber and connected to the burner end, the space surrounding the smoke gas tubes forming part of a water circul­ating system.
  • An efficient pre-heating of an obnoxious gas to be burned is obtained if the gas is led in a path around the tubular combustion chamber and then through tubes being parallell to the tubular furnace before it reaches the burner, the combus­tion products being transferred from the after combustion chamber to a separate heat exchanger of the condensing type.
  • a very compact and efficient plant is obtained if the after-combustion chamber is common for two aligned combustion tubes directed towards each other, and arranged so the combus­tion gases entering the chamber rotate in the same direction.
  • the boiler shown in the drawing has an elongate, tubular furnace 10, at one end of which a burner 11 is mounted. The opposite end of the furnace communicates by way of a restricted passage 12 with an after-combustion chamber 13.
  • a number of gas passage tubes 14 run parallell to the furnace tube and com­ municate in the embodiments according to Figure 1 and 3 with a collecting chamber 15, adjacent to the burner.
  • a water shell 16 encloses in these embodiments the tubular furnace 10, the after-combustion chamber 13 and the smoke gas tubes 14.
  • the water shell is in a conventional manner encased in insulations 17.
  • the combustion gases are exhausted through a conduit 18. Water is supplied to the shell 16 by way of a conduit 19, and leaves the shell by a conduit 20.
  • the boiler structure so far described is of a known design and ensures a high degree of efficiency, when it is provided with a conventional oil burner.
  • the design has now been modified according to the inven­tion in order to ensure a controlled combustion at a higher temperature.
  • the gas inlet 22 is subdivided into a primary part 22a and a secondary part 22b, by means of a displaceable disc 23. This is provided with a central opening 23a, in which the nozzle 11 of the burner is fitted.
  • a funnel-shaped member 24, co-axial with the burner nozzle projects into the furnace tube, and keeps initially the primary and the secondary gas flows apart.
  • the disc 23 is displaceable from outside the burner by means of an adjusting screw 25, passing through the end wall 26 of the furnace tube.
  • an adjusting screw 25 passing through the end wall 26 of the furnace tube.
  • the primary gas will flow in the same direction as the jet of fuel issued by the burner nozzle. Its content of oxygen will maintain combustion in a long, narrow flame, the highest tem­perature being obtained at the end of the flame.
  • the secondary gas flow will follow the shell of the tubu­ lar furnace 10 and will rotate vertically towards the restric­ted passage 12. As the secondary gas is comparatively colder than the primary gas being heated by the flame, it will have a higher density and will thus, to a higher degree, be affected by the centrifugal force. The mixing of the secondary gas with the flame will be deferred, substantially until the gases reach the restricted passage 12. There the secondary gas will be mixed with the hot combustion products, and a final combustion occurs at high temperature in chamber 13.
  • the gas supplied to the burner is air.
  • the contaminated gas, possibly mixed with air is handled by the fan, and the amount of fuel supplied through the burner will be determined with respect to the amount of combustible matter carried by the gas.
  • the rotating secondary gas flow will efficiently catch drops of oil or solid particles from the flame, so they will not be coked upon the hot furnace tube.
  • the plant shown in Figure 3 contains two complete furnaces 10, directed axially towards each other, and having a common after-combustion chamber 13.
  • the inlets for the combustion gas are arranged in such a manner that the gas flows, looking from one end of the plant, will rotate in opposite directions.
  • the forceful rotation in this chamber may be used for separating out particles of soot or other solid combustion products.
  • To that end the shell 27 of the after-combustion chamber 13 is provided with slots 28, which are directed tangentially outwards in the direction of rotation of the gases.
  • the slots may be located at portion of the shell surface only, the portion being enclosed by a collec­ting wall 27a.
  • the gases of combustion have a temperature of about 900°C, and thus a low density.
  • the solid particles will be forced outwards against the collecting wall 27a, after having passed the slots 28, while the combustion gases will flow out through the smoke tubes 14.
  • Figure 5 shows a pocket 25 for collecting the particles, which will be removed by means of a fan 30.
  • the invention may advantageously be used for the combustion of by­products from the cellulose pulp production.
  • Figure 6 shows a further modification which ensures a high degree of preheating of the combustion gas, which may be ex­hausts from spray booths of the car industry.
  • the tubular furnace 10 is not water-cooled, but the tubes 14a surrounding the furnace are externally swept by the incoming gases.
  • the gas is supplied under pressure through a conduit 30.
  • the space enclosing the furnace 10 and the tubes 14a is sub­divided by a number of baffle plates 31, provided with suitably located openings, so the gas entering by way of conduit 30 will pass in a more or less helical path around the tubes to a tur­ning chamber 32, from which the gases pass to the fan 21 by way of conduit 32a.
  • the gases leaving the furnace tube 10 by way of the restriction 12 rotatate in chamber 13, where possible particles are separated, whereupon the gas flows through the tubes 14a back towards a collecting chamber 33.
  • the flow of the incoming gas outside the tubes 14a will ensure a high degree of pre-heating, which facilitates the following combustion.
  • the combustion gases leaving the collecting chamber 33 are conveyed to a heat exchanger 34 of the condensing type by way of a conduit 33a.
  • the heat reclaimed may be used for heating water which enters through pipe 35 and leaves the heat ex-chan­ger by way of pipe 36. Condensate is drained by way of pipe 37.
  • the disc 23 is operated by a manual control means 25, but an automatic governing device can evidently be used. This may be guided by signals from some temperature sensor, for instance located in the after-combustion chamber 13.
  • the tubu­lar furnace 10 may in certain applications be mounted vertical­ly.
  • the rotating secondary air flow will form a film along the inner wall of the furnace tube ensuring an efficient cooling of the upper part thereof.
  • the disk 23 makes possible an easy adjustment of the air flow relationship betwen primary and secondary air. A small amount of primary air and a corre­sponding fuel supply results in a low flame temperature, while the proportionally much bigger secondary air ensures satisfac­tory cooling. As steam is generated the proportions are changed and the flame temperature increases.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
EP19870850246 1987-08-17 1987-08-17 Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer Expired EP0304532B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19870850246 EP0304532B1 (de) 1987-08-17 1987-08-17 Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer
DE8787850246T DE3766618D1 (de) 1987-08-17 1987-08-17 Verbrennungsanlage mit mindestens einer rohrfoermigen verbrennungskammer.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19870850246 EP0304532B1 (de) 1987-08-17 1987-08-17 Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer

Publications (2)

Publication Number Publication Date
EP0304532A1 true EP0304532A1 (de) 1989-03-01
EP0304532B1 EP0304532B1 (de) 1990-12-05

Family

ID=8198486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870850246 Expired EP0304532B1 (de) 1987-08-17 1987-08-17 Verbrennungsanlage mit mindestens einer rohrförmigen Verbrennungskammer

Country Status (2)

Country Link
EP (1) EP0304532B1 (de)
DE (1) DE3766618D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512353A2 (de) * 1991-05-10 1992-11-11 BONO ENERGIA S.p.A. Verfahren und Vorrichtung zur thermischen Zersetzung von umweltbelastenden Abfällen
EP0560678A1 (de) * 1992-03-10 1993-09-15 Dumoutier Et Massetat Vorrichtung zur Reinigung von Abgasen
DE102015205516A1 (de) * 2014-12-22 2016-06-23 Dürr Systems GmbH Vorrichtung und Verfahren zur thermischen Abgasreinigung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348909A1 (de) * 1973-09-28 1975-04-10 Gimborn Probat Werke Nachverbrennungsanlage
FR2248470A1 (de) * 1973-10-18 1975-05-16 Katec Katalytische Lufttech Be
GB1465310A (en) * 1973-11-19 1977-02-23 Nils Oestbo Ab Furnace for destructing obnoxious products contained in a gaseous fluid
FR2377005A1 (fr) * 1977-01-07 1978-08-04 Continental Carbon Co Procede de combustion de gaz residuels et appareil pour la mise en oeuvre de ce procede
DE3345611A1 (de) * 1983-12-16 1985-06-27 Deutsche Babcock Werke AG, 4200 Oberhausen Brenner zur erzeugung von inertgas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348909A1 (de) * 1973-09-28 1975-04-10 Gimborn Probat Werke Nachverbrennungsanlage
FR2248470A1 (de) * 1973-10-18 1975-05-16 Katec Katalytische Lufttech Be
GB1465310A (en) * 1973-11-19 1977-02-23 Nils Oestbo Ab Furnace for destructing obnoxious products contained in a gaseous fluid
FR2377005A1 (fr) * 1977-01-07 1978-08-04 Continental Carbon Co Procede de combustion de gaz residuels et appareil pour la mise en oeuvre de ce procede
DE3345611A1 (de) * 1983-12-16 1985-06-27 Deutsche Babcock Werke AG, 4200 Oberhausen Brenner zur erzeugung von inertgas

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512353A2 (de) * 1991-05-10 1992-11-11 BONO ENERGIA S.p.A. Verfahren und Vorrichtung zur thermischen Zersetzung von umweltbelastenden Abfällen
EP0512353A3 (en) * 1991-05-10 1993-03-10 Ing. Bono S.P.A. Method and unit for the thermal destruction of pollutant wastes
US5253596A (en) * 1991-05-10 1993-10-19 Bono Energia S.P.A. Method and unit for the thermal destruction of pollutant wastes
US5317980A (en) * 1991-05-10 1994-06-07 Bono Energia S.P.A. Method and unit for the thermal destruction of pollutant wastes
EP0560678A1 (de) * 1992-03-10 1993-09-15 Dumoutier Et Massetat Vorrichtung zur Reinigung von Abgasen
FR2688577A1 (fr) * 1992-03-10 1993-09-17 Dumoutier Massetat Sa Dispositif d'epuration des effluents gazeux.
DE102015205516A1 (de) * 2014-12-22 2016-06-23 Dürr Systems GmbH Vorrichtung und Verfahren zur thermischen Abgasreinigung
US10429066B2 (en) 2014-12-22 2019-10-01 Dürr Systems Ag Apparatus and method for thermal exhaust gas purification

Also Published As

Publication number Publication date
EP0304532B1 (de) 1990-12-05
DE3766618D1 (de) 1991-01-17

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