EP0751347A1 - Four - Google Patents

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Publication number
EP0751347A1
EP0751347A1 EP96106994A EP96106994A EP0751347A1 EP 0751347 A1 EP0751347 A1 EP 0751347A1 EP 96106994 A EP96106994 A EP 96106994A EP 96106994 A EP96106994 A EP 96106994A EP 0751347 A1 EP0751347 A1 EP 0751347A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
longitudinal axis
outlet
chamber
post
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Withdrawn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
EP96106994A
Other languages
German (de)
English (en)
Inventor
Hans Mitthof
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.)
Richard Kablitz & Mitthof GmbH
Original Assignee
Richard Kablitz & Mitthof 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 Richard Kablitz & Mitthof GmbH filed Critical Richard Kablitz & Mitthof GmbH
Publication of EP0751347A1 publication Critical patent/EP0751347A1/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Withdrawn legal-status Critical Current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
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B5/00—Combustion apparatus with arrangements for burning uncombusted material from primary combustion
    • F23B5/04—Combustion apparatus with arrangements for burning uncombusted material from primary combustion in separate combustion chamber; on separate grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/106—Combustion in two or more stages with recirculation of unburned solid or gaseous matter into combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/101—Furnace arrangements with stepped or inclined grate

Definitions

  • the invention relates to a furnace for solid fuel, in particular for organic solid fuels, such as wood, wood waste, bark, bio-waste, waste from the production of chipboard or the like.
  • a furnace for solid fuel in particular for organic solid fuels, such as wood, wood waste, bark, bio-waste, waste from the production of chipboard or the like.
  • Such combustion plants are generally known, cf. e.g. DE-AS 23 59 730 and DE 44 26 357 A1.
  • the systems described in these publications are particularly intended for the incineration of waste or waste.
  • the moving grate can have fixed and moving grate bar rows arranged in a step-like manner, in order to achieve a particularly effective shifting of the firing material and an optimal stoking effect.
  • a grate can work in the individual grate sections with a variable transport speed in order to adapt the residence time of the firing material in the different zones of the primary area of the combustion chamber to the respective needs or qualities of the firing material.
  • a cyclone combustion chamber can be provided according to DE-AS 23 59 730 in order to ensure low-emission gases.
  • a rotatable nozzle roller is arranged in the smoke exhaust.
  • exit of the combustion chamber opens from below, preferably essentially radially, into a lower region of a post-combustion chamber designed as a swirl chamber with a longitudinal axis inclined to a horizontal plane and an outlet arranged at the upper end of the longitudinal axis.
  • the inclined arrangement of the afterburning chamber significantly reduces the vertical movement component of the flow of the combustion gases compared to the mean flow velocity in the direction of the longitudinal axis of the afterburning chamber, with the result that the mean sinking velocity of entrained fuel particles relative to the combustion gases becomes greater than their mean flow velocity in the vertical direction.
  • the firing material particles then fall onto the sloping walls of the afterburning space before complete combustion, they can due to the sloping arrangement like sliding back on a slide to the exit of the secondary area of the combustion chamber, where they are caught again by the flow of the combustion gases and fed back to the turbulent eddies of the combustion gases which are constantly maintained in the post-combustion chamber.
  • the practically dust-free combustion exhaust gases thus have the further advantage that the heat exchangers connected downstream of the afterburning chamber, which serve to use the heat of the combustion gases, can only become slightly dirty and thus work with high efficiency.
  • the single figure shows a schematic sectional view of a large combustion plant according to the invention.
  • the firing part of a boiler system shown in the drawing has, among other things, a fuel feed 1 and a chute 2 with hydraulically operated flaps 3, so that fired material can be directed onto a stair-like feed grate 4 which leads from the chute 2 downwards and forms the underside of a combustion chamber 5 .
  • the grate can be subjected to underwind in a controlled manner, a zone-by-underwind regulation being possible in order to supply the combustion material with the required or desired amount of combustion air.
  • the tubular rods can be pushed back and forth by means of a hydraulically operated frame system in order to transport the firing material while shifting in the direction of the lower end of the feed grate 4.
  • the fired material is moved through a drying zone adjoining the chute and through a firing zone to a burnout zone at the lower end of the feed grate 4, where the incombustible slags are then thrown onto a wet conveyor line 7, which also has ash falling down through the feed grate 4 is promoted. If necessary, this rust diarrhea can also be fed pneumatically to the combustion chamber.
  • the combustion chamber 5 extends from a primary area above the feed grate 4 via a secondary area, into which additional combustion air is blown through separate air inlets 8, to an outlet 9 which, from below, essentially radially, into the lower area of an afterburning chamber arranged with an inclined longitudinal axis 10 opens.
  • This afterburning chamber 10 has an essentially cylindrical interior, at the upper end of which an outlet line 11 leads to a boiler (not shown).
  • the blower unit 13 can be a blower or paddle wheel driven by the electric motor 12, the paddle elements being able to be formed by links of chain parts which are each held at one end on a hub driven by the electric motor 12 and the free ends of which circulate the hub can be stretched radially outwards by centrifugal forces.
  • a heat shield 14 can be arranged on the side of the blower unit 13 facing the afterburning chamber 10 in order to protect the blower unit 13 against direct heat radiation from the afterburning chamber 10.
  • a stoneable air supply 15 opens into the post-combustion chamber 10 in order to supply additional combustion air on the one hand and to be able to quickly mix this air with the combustion gases in the chamber 10.
  • the outlet 16 of the chamber 10 has a significantly reduced cross section compared to the chamber 10, so that the vortex flow generated by the blower unit 13 only has a larger movement component in the exit direction in the region of its center adjacent to the longitudinal axis of the chamber.
  • the particles hit the inner wall of the room 10, they will at least partially slide down to the exit 9 of the combustion chamber 5 and, if necessary, be carried back into the room 10 until they have been completely gasified. Even if these particles adhere to the inner wall of room 10, complete gasification can be expected after some time.
  • the particles consist of completely burnt-out and non-gasifiable ash, they can form a coating on the inner wall of room 10 over time. This coating must then be removed during inspections of the system. However, due to the vortex flow in the afterburning chamber 10 or due to its inclined arrangement, only a very small proportion of these fly ash particles can get into the outlet line 11 and thus contaminate the downstream heat exchanger.
  • the particles have a very long dwell time in space 10, so that with a complete one Post-combustion can be expected or the post-combustion chamber 10 acts in the manner of a particle barrier upstream of the output line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
EP96106994A 1995-06-29 1996-05-03 Four Withdrawn EP0751347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19525106A DE19525106C1 (de) 1995-06-29 1995-06-29 Feuerungsanlage
DE19525106 1995-06-29

Publications (1)

Publication Number Publication Date
EP0751347A1 true EP0751347A1 (fr) 1997-01-02

Family

ID=7766464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106994A Withdrawn EP0751347A1 (fr) 1995-06-29 1996-05-03 Four

Country Status (3)

Country Link
US (1) US5694868A (fr)
EP (1) EP0751347A1 (fr)
DE (1) DE19525106C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953931A (zh) * 2014-05-19 2014-07-30 张文国 焚烧裂化型垃圾无害化处理装置及其处理工艺

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2161798T3 (es) * 1995-05-05 2001-12-16 Bbp Environment Gmbh Procedimiento e instalacion de combustion para quemar basuras.
TW455667B (en) * 1999-09-02 2001-09-21 Von Roll Umwelttechnik Ag Chute of a feed system for a refuse incineration plant having a cutting apparatus
DE20001926U1 (de) * 2000-02-04 2000-03-23 Christian Paul Vorrichtung zum Verbrennen von Biofeinstaub- und Feststoffmassen
US6938563B2 (en) * 2001-08-01 2005-09-06 Martin GmbH für Umwelt-und Energietechnik Grate furnace
BRPI0711329A2 (pt) * 2006-05-05 2011-08-30 Plascoenergy Ip Holdings S L Bilbao Schaffhausen Branch Gaseificador orientado horizontalmente com sistema de transferência lateral
CN101617170B (zh) * 2006-12-07 2012-11-28 废物2能源科技国际有限公司 批量废物气化工艺
US20120247375A1 (en) * 2011-03-31 2012-10-04 Bender Robert J Grate clearing and ash removal system for gasification furnace
DE102013207724A1 (de) 2013-04-26 2014-10-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verbrennungsanlage mit verbesserter Lüftung und zyklonartiger Brennkammer
DE102017100408B4 (de) 2017-01-11 2018-10-31 Richard Kablitz GmbH Rost für Feuerungsanlagen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176781B (de) * 1961-03-15 1964-08-27 Esslingen Maschf Nachbrennkammer fuer Muellverbrennungsanlagen
AT275700B (de) * 1967-07-06 1969-11-10 Von Roll Ag Verfahren und Vorrichtung zum Verbrennen von festen Abfallstoffen
EP0445070A2 (fr) * 1990-02-28 1991-09-04 Institute of Gas Technology Procédé et appareil pour la réduction de l'émission lors de l'incinération des déchets
EP0525711A2 (fr) * 1991-07-29 1993-02-03 Paul Christian Dispositif de combustion de biomasses et de matières solides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044288A (en) * 1988-12-01 1991-09-03 Barlow James L Method and apparatus for the efficient combustion of a mass fuel
US5279234A (en) * 1992-10-05 1994-01-18 Chiptec Wood Energy Systems Controlled clean-emission biomass gasification heating system/method
DE4426357A1 (de) * 1993-07-27 1995-02-02 Waermetechnik Dr Pauli Gmbh Feuerungsanordnung für feste Brennstoffe wie Müll und Verbrennungsverfahren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176781B (de) * 1961-03-15 1964-08-27 Esslingen Maschf Nachbrennkammer fuer Muellverbrennungsanlagen
AT275700B (de) * 1967-07-06 1969-11-10 Von Roll Ag Verfahren und Vorrichtung zum Verbrennen von festen Abfallstoffen
EP0445070A2 (fr) * 1990-02-28 1991-09-04 Institute of Gas Technology Procédé et appareil pour la réduction de l'émission lors de l'incinération des déchets
EP0525711A2 (fr) * 1991-07-29 1993-02-03 Paul Christian Dispositif de combustion de biomasses et de matières solides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953931A (zh) * 2014-05-19 2014-07-30 张文国 焚烧裂化型垃圾无害化处理装置及其处理工艺

Also Published As

Publication number Publication date
DE19525106C1 (de) 1997-03-13
US5694868A (en) 1997-12-09

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