EP1002995A2 - Incinérateur de déchets et appareil de combustion secondaire - Google Patents

Incinérateur de déchets et appareil de combustion secondaire Download PDF

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Publication number
EP1002995A2
EP1002995A2 EP99116686A EP99116686A EP1002995A2 EP 1002995 A2 EP1002995 A2 EP 1002995A2 EP 99116686 A EP99116686 A EP 99116686A EP 99116686 A EP99116686 A EP 99116686A EP 1002995 A2 EP1002995 A2 EP 1002995A2
Authority
EP
European Patent Office
Prior art keywords
secondary combustion
combustion chamber
filter
incinerator
meshed
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Withdrawn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
EP99116686A
Other languages
German (de)
English (en)
Other versions
EP1002995A3 (fr
Inventor
Masao Muta
Makoto Shibata
Masuo Takeda
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.)
Innovative Environmental Tech Co Ltd
Innovative Environmental Technologies Inc
Original Assignee
Innovative Environmental Tech Co Ltd
Innovative Environmental Technologies Inc
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 Innovative Environmental Tech Co Ltd, Innovative Environmental Technologies Inc filed Critical Innovative Environmental Tech Co Ltd
Publication of EP1002995A2 publication Critical patent/EP1002995A2/fr
Publication of EP1002995A3 publication Critical patent/EP1002995A3/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Withdrawn legal-status Critical Current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
    • F23G5/24—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a vertical, substantially cylindrical, combustion chamber
    • F23G5/245—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a vertical, substantially cylindrical, combustion chamber with perforated bottom or grate
    • 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
    • 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
    • F23J15/025—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 filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/12—Waste feed arrangements using conveyors
    • F23G2205/121—Screw conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/14—Waste feed arrangements using hopper or bin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/22—Waste papers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/28—Plastics or rubber like materials

Definitions

  • This invention relates to a waste incinerator and its secondary combustion device.
  • dioxins contained in such unburned materials are produced when wastes burn at a low temperature in an incinerator, and other convert during cooling from dioxin precursors contained in the exhaust gas. It is known, that such dioxin precursors have a similar molecular structure as dioxins and convert to dioxins during cooling at temperatures of about 300°C in the presence of such catalysts as copper chloride, iron chloride and carbon in flying ashes.
  • An object of this invention is to provide a secondary combustion device that prevents the production of dioxins during cooling, and an incinerator that discharges no dioxins.
  • a secondary combustion device comprising a secondary combustion chamber into which combustion gas is to be introduced, a secondary burner provided in the secondary combustion chamber, a porous filter of sintered alumina provided at an outlet of the secondary combustion chamber, and a means for creating a negative pressure in the back side of the porous filter.
  • sintered alumina is used because it has an excellent heat resistance and chemical resistance and it will not react chemically with any components in flying ashes even at high temperatures or will not deteriorate.
  • the incinerator of the embodiment comprises a combustion chamber 1 in which wastes are burned, a duct 2 connected to the smoke discharge port at the top of the chamber 1, a secondary combustion device 3 in the duct. Wastes are put into a hopper 5 by a bucket conveyor 4 and then fed into the combustion chamber 1 by a screw conveyor 6.
  • burners 8 are provided right over a hearth 7.
  • a preheating burner 9 an air passage 10 and an ash removal port 11 are provided below the hearth 7.
  • the combustion chamber 1 is also provided with a temperature sensor 12, chamber pressure measuring port 13 and an inspection window 14.
  • the hearth 7, shown enlarged in Fig. 2, has a double-wall structure comprising a stainless steel honeycomb member 15 and an upper layer 16 of tangled stainless steel whiskers.
  • the honeycomb lower member 15 and the upper whisker layer 16 are red-heated by combustion heat and air supplied into the chamber 1 from under the hearth 7.
  • the hearth also serves to let the wastes on the hearth, which decrease in volume by burning, gradually fall therethrough, thus promoting combustion of unburned wastes and considerably reducing the amount of ashes.
  • the whiskers forming the upper layer 16 may be chips produced during machine cutting.
  • a filter 19 is provided, which, like the hearth 7, has a double-wall structure comprising a lower stainless steal honeycomb member 17 and an upper layer of tangled stainless steel whiskers 18.
  • the filter 19 is red-heated by combustion heat and promotes combustion of unburned components in the gas.
  • a temperature sensor 20 is provided in the duct 2.
  • the outlet of the duct 2 is connected to a cooling device (not shown) by a duct 21.
  • the secondary combustion device 3 shown enlarged in Fig. 3, comprises a secondary burner 23 mounted in a secondary combustion chamber 22, a three-dimensionally meticulated kanthal filter 25 provided at the inlet of the secondary combustion chamber 22 and formed by arranging helical coils 24 of kanthal wire perpendicular to each other, and a plate-shaped filter 26 of sintered alumina provided at the outlet of the chamber 22.
  • a vacuum pump (not shown) is connected to an air suction port 27 formed in the back of the alumina filter 26.
  • the secondary combustion chamber 22 is provided with a temperature sensor 28, a chamber pressure measuring hole 29 and an inspection window 30.
  • the kanthal filter 25 is red-heated by secondary combustion heat and serves to stabilize the secondary combustion temperature and keep it high. It may be provided in the combustion chamber 1 and the duct 2 close to the combustion chamber.
  • the alumina filter 26 has fine pores in the order of micron and serves to catch flying ashes contained in the exhaust gas to burn them with secondary combustion heat, thereby considerably reducing the amount of flying ashes and oxidizing copper chloride, iron chloride, carbon, etc. present in the flying ashes.
  • the vacuum pump and the air suction port 27 serve to keep air-permeable the fine pores of the alumina filter 26.
  • a single-tier hearth is used. But instead, a plurality of hearths may be provided in vertical tiers.
  • the filters in the hearth and at the entrance of the duct have a double-wall structure comprising a stainless steel honeycomb member and a layer of tangled stainless steel whiskers. But instead, they may be meshed, porous or fibrous (longer than whiskers) members made of a heat-resistant metal other than stainless steel or a ceramic material. Of course, such members may be used in combination.
  • each hearth may be formed from a different material from other hearths.
  • the kanthal filter provided in the secondary combustion chamber may be formed of a flat meshed plate, a metallic wire woven in a three-dimensional lattice pattern, or a corrugated, three-dimensionally woven metallic wire or a combination thereof.
  • This filter may be made from platinum wire or any other metallic wire high in heat resistance and resistance to high-temperature oxidation instead of kanthal wire.
  • the filter can catch flying ashes contained in exhaust gas to burn them with secondary combustion heat, thereby considerably reducing the amount of flying ashes in exhaust gas, and oxidizing copper chloride, iron chloride and carbon present in the flying ashes.
  • the filter of woven metallic wire provided near the secondary burner is red-heated by secondary heat, so that the secondary combustion temperature is stably kept high.
  • the hearth of the combustion chamber which is formed of a heat-resistant metal or a ceramic member having a large surface area with meshed or honeycomb gaps, red-heats and let the wastes thereon, which decrease in volume by burning, fall gradually through its gaps, thus promoting combustion of any unburned components.
  • the amount of ashes thus considerably decreases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
EP99116686A 1998-11-10 1999-08-26 Incinérateur de déchets et appareil de combustion secondaire Withdrawn EP1002995A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10319108A JP2000146136A (ja) 1998-11-10 1998-11-10 二次燃焼装置および焼却炉
JP31910898 1998-11-10

Publications (2)

Publication Number Publication Date
EP1002995A2 true EP1002995A2 (fr) 2000-05-24
EP1002995A3 EP1002995A3 (fr) 2000-11-29

Family

ID=18106561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116686A Withdrawn EP1002995A3 (fr) 1998-11-10 1999-08-26 Incinérateur de déchets et appareil de combustion secondaire

Country Status (2)

Country Link
EP (1) EP1002995A3 (fr)
JP (1) JP2000146136A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353125A1 (fr) * 2002-04-03 2003-10-15 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Appareil et méthode pour traiter les fumées de foyers à combustible solide
FR2850735A1 (fr) * 2003-01-31 2004-08-06 Michel Finet Incinerateur d'ordures menageres
AT518302A1 (de) * 2015-10-28 2017-09-15 Eta Heiztechnik Gmbh Ofen
CN109539292A (zh) * 2017-09-22 2019-03-29 何玲玲 烟宝包
CN113280355A (zh) * 2021-05-31 2021-08-20 西北有色金属研究院 一种烟气二次燃烧与高温过滤除尘一体化装置及工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106439788A (zh) * 2016-09-07 2017-02-22 成都聚立汇信科技有限公司 新型生物质能源燃烧装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1578136A (fr) * 1968-06-20 1969-08-14
DE2549076A1 (de) * 1975-11-03 1977-05-12 Kraftanlagen Ag Einrichtung zur verbrennung von abfallstoffen
US4615283A (en) * 1984-09-26 1986-10-07 Westinghouse Electric Corp. Apparatus and method for disposal of hazardous waste material
DE3919790A1 (de) * 1989-06-16 1990-12-20 Metallgesellschaft Ag Verfahren zur vermeidung der bildung von hochkondensierten aromatischen kohlenwasserstoffen und dioxinen in verbrennungsanlagen und vorrichtung zur durchfuehrung des verfahrens

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353125A1 (fr) * 2002-04-03 2003-10-15 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Appareil et méthode pour traiter les fumées de foyers à combustible solide
DE10215734B4 (de) * 2002-04-03 2013-08-01 Hark Gmbh & Co Kg Kamin- Und Kachelofenbau Verfahren zur Behandlung von Abgasen von Festbrennstoff-Feuerstätten
FR2850735A1 (fr) * 2003-01-31 2004-08-06 Michel Finet Incinerateur d'ordures menageres
AT518302A1 (de) * 2015-10-28 2017-09-15 Eta Heiztechnik Gmbh Ofen
AT518302B1 (de) * 2015-10-28 2018-04-15 Eta Heiztechnik Gmbh Ofen
CN109539292A (zh) * 2017-09-22 2019-03-29 何玲玲 烟宝包
CN113280355A (zh) * 2021-05-31 2021-08-20 西北有色金属研究院 一种烟气二次燃烧与高温过滤除尘一体化装置及工艺

Also Published As

Publication number Publication date
JP2000146136A (ja) 2000-05-26
EP1002995A3 (fr) 2000-11-29

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