EP2689187A1 - Installation de combustion à grille de postcombustion - Google Patents

Installation de combustion à grille de postcombustion

Info

Publication number
EP2689187A1
EP2689187A1 EP12707525.7A EP12707525A EP2689187A1 EP 2689187 A1 EP2689187 A1 EP 2689187A1 EP 12707525 A EP12707525 A EP 12707525A EP 2689187 A1 EP2689187 A1 EP 2689187A1
Authority
EP
European Patent Office
Prior art keywords
combustion
ash
grate
post
passages
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Withdrawn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
EP12707525.7A
Other languages
German (de)
English (en)
Inventor
Rafael Moreno Rueda
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.)
Clyde Bergemann DRYCON GmbH
Original Assignee
Clyde Bergemann DRYCON 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 Clyde Bergemann DRYCON GmbH filed Critical Clyde Bergemann DRYCON GmbH
Publication of EP2689187A1 publication Critical patent/EP2689187A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • 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
    • 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
    • F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • 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
    • F23G2202/102—Combustion in two or more stages with supplementary heating
    • 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
    • F23J2900/01007—Thermal treatments of ash, e.g. temper or shock-cooling for granulation

Definitions

  • the present invention relates to an incineration plant in the manner of a carbon incineration plant, waste incineration plant, a substitute fuel plant or a biomass incineration plant.
  • plants of the aforementioned type are regularly fuels such. As coal or waste, burned.
  • the fuels are burned on a fuel grate within a combustion chamber of the incinerator.
  • the ash produced by the fuels is often not suitable for further processing, for example for cement production, because the grain size of the ash does not have the required size and / or the ash is too high a proportion of unburned Ingredients has.
  • the object of the invention is therefore to at least partially solve the problems described with reference to the prior art and, in particular, to provide a combustion plant with the aid of which combustion residues can be produced which have advantageous properties with regard to further processing.
  • a method for the combustion of fuels is to be specified, incurred in the combustion residues, which have advantageous properties for further processing.
  • the combustion system according to the invention has a combustion chamber, which is at least partially surrounded by a housing, wherein the combustion chamber has at least one ash outlet, which is associated with at least one post-combustion grate for unburned components of the ash.
  • the combustion chamber of the incinerator In the combustion chamber of the incinerator are fuels such as lignite, hard coal, waste and / or substitute fuels such. As plastics and / or scrap tires, burned to release thermal energy. This thermal energy is extracted from the combustion exhaust gases by means of heat exchangers (such as tube packages) and, for example, supplied to turbines for converting the thermal energy into electrical energy.
  • the fuel is supplied via a fuel shaft to the combustion chamber, in which the fuel burns.
  • the combustion chamber is at least partially surrounded by a housing which is provided with tubes carrying cooling water (heat exchanger) and / or at least partially with a refractory lining.
  • the ash of the fuel with the unburned components of the fuel contained therein is removed from the combustion chamber via at least one ash outlet.
  • the at least one ash outlet is, in particular, a (closable) opening in the combustion chamber floor, through which the ash can be removed from the combustion chamber.
  • a combustion chamber floor for example, formed with a slope in the direction of the at least one ash outlet and / or in the combustion chamber are fuel conveyors such.
  • movable slides and / or roller conveyor and / or plate conveyor and / or Ket- tten attention are arranged, with which the fuel and / or the ash can be promoted in the direction of the at least one ash outlet.
  • the at least one ash outlet closes a shaft and / or Hopper through which the ash with the unburned components of the fuels can be removed by gravity from the combustion chamber.
  • this post-combustion grate is still part of the incineration plant, ie, in an area up to the point of application, to a downstream ash conveyor, which is mounted below the ash outlet.
  • the at least one post-combustion grate is a horizontal and / or at least partially inclined plane on which the ashes with the unburned constituents come to rest at least partially for a certain duration.
  • the at least one post-combustion grate is designed in particular in the form of a roller grate, feed grate, return grate, plan grate, traveling grate and / or stair grate and / or consists at least partially of (hollow) tubes, hollow beams and / or grids ,
  • the ash falls as a result of gravity through the at least one ash outlet on the post-combustion, so that the ash is at least partially crushed and / or mixed by the impact on the at least one post combustion and thus unburned components of the ash be released.
  • the at least one post-combustion grate is arranged such that the ash from a height of at least 1 meter, more preferably at least 2 meters or very particularly preferably at least 3 meters falls from the combustion chamber to the at least one post-combustion grate.
  • the ash is subjected to afterburning on the at least one post-combustion grate.
  • combustion grate a reduction in the temperature of the ash takes place.
  • the ash remains at least partially on the at least one post-combustion grate until the unburned components of the ash have been reduced to a level that is advantageous for further processing of the ash.
  • the permissible proportion of unburned constituents in the ash depends on the intended further processing of the ashes and can be determined by the skilled person through routine activities.
  • the combustion chamber has at least one main combustion grate.
  • This main combustion grate at least partially forms the bottom of the combustion chamber and is designed in the manner of a roller grate, feed grate, return grate, plan grate, traveling grate and / or stair grate.
  • the at least one main combustion grate in particular serves to transport the fuel through the combustion chamber, in particular in the direction of the at least one ash outlet, and in particular can have passages for aerating the fuel on the main combustion grate.
  • the at least one post-combustion grid is rigidly connected to the at least one ash outlet or to a shaft or funnel adjoining the at least one ash outlet. This means, in particular, that the unburned constituents of the ash, after they have come to rest on the at least one post-combustion grate, can burn substantially without movement.
  • the at least one afterburner grate is designed with a cooling device.
  • This may in particular be an at least partial flow through the at least one post-combustion grate with a cooling medium.
  • overheating of the at least one post-combustion grate and thus damage can be prevented.
  • the temperature of the forwarded (at least partially solidified) ash and / or the airflow flowing past there are influenced or adjusted in terms of temperature.
  • At least one burner is arranged adjacent to the at least one post-combustion grate.
  • This at least one burner is preferably operated with oil and / or gas and serves, in particular, to ignite unburned constituents of the ash on the at least one post-combustion grid and to assist the afterburning of the ash.
  • the proportion of unburned constituents in the ash can be actively controlled in a particularly advantageous manner.
  • the at least one post-combustion grate is followed by an ash conveyor which has a further combustion zone. This means, in particular, that the ashes conveyed by the ash conveyor continue to burn on the ash conveyor, thus further reducing the proportion of unburned components in the ash.
  • the secondary combustion in the area of the post-combustion grate and a tertiary combustion in the ash conveyor a very compact and complete combustion of the fuel is possible, even if these are "hardly combustible" fuels
  • the available space is highly utilized and the efficiency of the incineration plant is significantly improved, for which openings can be provided in the ash conveyor, through which the ashes can be at least partially perfused with the afterburner air.
  • the position of the at least one post-combustion rust is adjustable.
  • the at least one afterburning grid in the ash outlet and / or in the shaft and / or funnel adjoining the at least one ash outlet is at least partially adjustable in height and / or at least partially removed to at least partially remove the ash from the at least one afterburner rust and / or can be rotated.
  • the at least one main combustion grate has first passages or the at least one post-combustion grate has second passages, with a size of the first passages or a size of the second passages being adjustable.
  • the first passages and / or second passages serve in particular for the flow through the fuel and / or the ash with (combustion) gas, in particular oxygen.
  • the first passages and / or second passages serve to remove the fuels and / or ash from the combustion chamber and / or the at least one ash outlet.
  • the adjustment of the size of the first passages and / or the adjustment of the size of the second passages may also serve to control an amount of oxygen passing through the at least one main combustion grate and / or afterburning grate through the fuels and / or ash and / or into the combustion chamber flows.
  • the size of the first passages is greater than the size of the second passages.
  • a desired Vorverbrennungsgrad be set, which is particularly suitable for subsequent combustion.
  • a fuel combustion process comprising at least the following steps:
  • a step e) is performed, the ash is then placed on an ash conveyor.
  • step e) a simultaneous post-combustion and cooling of the ash takes place in the ash conveyor during transport, wherein particularly preferably ambient air in countercurrent to the ash is brought into contact with this.
  • Fig. 1 a combustion system according to the invention.
  • the combustion chamber 1 shows an incinerator 1 with a combustion chamber 2.
  • the combustion chamber 2 is at least partially surrounded by a housing 3 and a combustion chamber bottom 19.
  • fuel 14 via a fuel funnel 20 and a fuel shaft 15 is filled.
  • the fuel 14 is conveyed through the combustion chamber 2 at the outlet of the fuel shaft 15 with the aid of an at least vertically movable fuel conveyor 16.
  • the fuel 14 at least partially burns to ash 6.
  • the resulting combustion gases rise in the combustion chamber 2 and flow through Leerman 17 of the combustion system 1 to tube packages 18, which direct the thermal energy from the combustion gases to turbines not shown here.
  • the combustion chamber bottom 19 is at least partially designed with a main combustion grate 7 having first passages 12.
  • the first passages 12 can be adjusted in size and / or completely closed and serve in particular the ventilation of the fuel 14 on the main combustion grate 7.
  • Fuel 14 and / or ash 6, which fall through the first passages 12, can with an underlying Conveyor towards a shaft 23 and funnel 22 are transported away.
  • the combustion chamber 2 has an ash outlet 4, to which the shaft 23 extends below it as far as the funnel 22.
  • the ash 6 is conveyed by the fuel conveyor 16 into the ash outlet 4, through which the ash 6 falls through the shaft 23 onto a post-combustion grate 5 from a height 21. Afterburning of unburned constituents of the ash 6 takes place on the afterburning grid 5, so that the proportion of unburnt constituents of the ash 6 decreases.
  • a burner 9 is arranged in the region of the post-combustion grate 5.
  • this is flowed through by means of a cooling device 8, schematically indicated here as dashed arrows, with a cooling medium.
  • the post-combustion grate 5 has also second passages 13, the size of which is adjustable.
  • the afterburned ash falls through the second passages on an ash conveyor 10 located therebelow, which is formed along its conveying path of a post-combustion zone 11, in which the unburned components of the post-combusted ash 6 are further reduced.
  • the post-combustion grate 5 is pivotable about an axis not shown here.
  • the incineration plant according to the invention and the process according to the invention for combusting fuels are distinguished by the fact that the ashes produced with them have a particularly low proportion of unburned constituents and are thus particularly suitable for further processing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

L'invention concerne une installation de combustion (1) comprenant une chambre de combustion (2) entourée au moins en partie par un boîtier (3), la chambre de combustion (2) présentant au moins une sortie pour les cendres (4) à laquelle est associée au moins une grille de postcombustion (5) pour des éléments non brûlés de la cendre (6).
EP12707525.7A 2011-03-25 2012-03-01 Installation de combustion à grille de postcombustion Withdrawn EP2689187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011015088A DE102011015088A1 (de) 2011-03-25 2011-03-25 Verbrennungsanlage mit Nachbrennerrost
PCT/EP2012/053501 WO2012130554A1 (fr) 2011-03-25 2012-03-01 Installation de combustion à grille de postcombustion

Publications (1)

Publication Number Publication Date
EP2689187A1 true EP2689187A1 (fr) 2014-01-29

Family

ID=45808855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12707525.7A Withdrawn EP2689187A1 (fr) 2011-03-25 2012-03-01 Installation de combustion à grille de postcombustion

Country Status (6)

Country Link
US (1) US20140083339A1 (fr)
EP (1) EP2689187A1 (fr)
CN (1) CN103492807A (fr)
DE (1) DE102011015088A1 (fr)
WO (1) WO2012130554A1 (fr)
ZA (1) ZA201307035B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107676771B (zh) * 2017-02-28 2023-08-04 浙江浙燃能源有限公司 一种强化燃烧系统
US11879639B2 (en) * 2019-12-19 2024-01-23 Raymond Dueck Fuel management system for a biomass furnace
CN114263909B (zh) * 2021-12-27 2022-10-14 宁夏环保集团有限责任公司 一种生活垃圾处理装置

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Publication number Priority date Publication date Assignee Title
US4292950A (en) * 1977-06-03 1981-10-06 Schossow George W Gas burner system
CN87212973U (zh) * 1987-09-03 1988-07-13 冶金部建筑研究总院 逆燃式垃圾焚烧炉
US5320050A (en) * 1992-06-24 1994-06-14 Hitachi Zosen Corporation Ash melting furnace
CH688871A5 (de) * 1994-05-16 1998-04-30 Von Roll Umwelttechnik Ag Verfahren zur thermischen Energiegewinnung aus Abfallmaterial, insbesondere Muell.
JP2950754B2 (ja) * 1995-07-14 1999-09-20 株式会社プランテック ごみ焼却灰の溶融処理方法及び溶融処理設備
US6112677A (en) * 1996-03-07 2000-09-05 Sevar Entsorgungsanlagen Gmbh Down-draft fixed bed gasifier system and use thereof
DE19961384A1 (de) * 1999-12-20 2001-06-21 Abb Alstom Power Ch Ag Verfahren zur thermischen Behandlung von Rostasche aus Müllverbrennungsanlagen
CN2663819Y (zh) * 2003-08-15 2004-12-15 赵水木 垃圾焚烧炉
CN100535520C (zh) * 2005-10-12 2009-09-02 伟明环保设备有限公司 往复多列式炉排生活垃圾焚烧炉
CN100498067C (zh) * 2007-01-10 2009-06-10 深圳市埃玛特实业有限公司 一种垃圾燃料热解气化焚烧炉
DE102008054098A1 (de) * 2008-10-31 2010-05-06 Clyde Bergemann Dryc0N Gmbh Verfahren und Vorrichtung zur Förderung von Material aus einem Verbrennungskessel
CN101788150B (zh) * 2010-01-26 2012-12-19 清华大学 一种滚筒炉排垃圾焚烧炉及其预热燃烧方法

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Title
See references of WO2012130554A1 *

Also Published As

Publication number Publication date
WO2012130554A1 (fr) 2012-10-04
ZA201307035B (en) 2014-05-28
CN103492807A (zh) 2014-01-01
US20140083339A1 (en) 2014-03-27
DE102011015088A1 (de) 2012-09-27

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