EP0326817B1 - Anlage zum Verschwelen von Abfallstoffen - Google Patents

Anlage zum Verschwelen von Abfallstoffen Download PDF

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Publication number
EP0326817B1
EP0326817B1 EP89100361A EP89100361A EP0326817B1 EP 0326817 B1 EP0326817 B1 EP 0326817B1 EP 89100361 A EP89100361 A EP 89100361A EP 89100361 A EP89100361 A EP 89100361A EP 0326817 B1 EP0326817 B1 EP 0326817B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
carbonisation
gases
temperature
gas
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.)
Expired - Lifetime
Application number
EP89100361A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0326817A2 (de
EP0326817A3 (en
Inventor
Frohmut Dipl.-Ing. Vollhardt
Karl-Wolfgang May
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.)
MAN Gutehoffnungshutte GmbH
Siemens AG
Original Assignee
MAN Gutehoffnungshutte GmbH
Siemens AG
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 MAN Gutehoffnungshutte GmbH, Siemens AG filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0326817A2 publication Critical patent/EP0326817A2/de
Publication of EP0326817A3 publication Critical patent/EP0326817A3/de
Application granted granted Critical
Publication of EP0326817B1 publication Critical patent/EP0326817B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • 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
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0273—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using indirect heating
    • 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
    • F23G5/48—Preventing corrosion

Definitions

  • the invention relates to a plant for charring waste materials according to the preamble of the claim.
  • Waste materials in the sense of the invention are to be understood as household and industrial waste as well as chemical residues which develop pollutants or gases, such as various types of dioxins, furans, CO etc.
  • An afterburning chamber is connected downstream of a rotary kiln. In this combustion chamber there is a temperature between 1200 - 1400 ° C as well as a gas speed of 2 - 4 m / sec.
  • an afterburning chamber behind a combustion furnace of a chemical waste incinerator is known. The burners of the afterburning chamber used are concentrated on a certain chamber area.
  • the discharge device for residues from the smoldering drum has a stair grate provided with a combustion device with a subsequent afterburning chamber and a heat recovery system, preferably one Waste heat boiler with steam drum is connected downstream.
  • the combustion or smoldering gases enter the afterburning chamber as a heat-emitting medium. This is also the case with the system according to the invention. If necessary, additional fuels from another source of the combustion chamber can also be added.
  • DE-A-3 504 810 discloses a process for the thermal conversion of dioxin, in which a coke battery is connected in parallel to a pyrolysis plant and the coke battery and the plant release their gas to an afterburner (3 in the drawing), where obviously the coke gas is used to burn the dioxin above 1200 ° C.
  • plastic waste is preheated in a rotary kiln for the purpose of splitting off hydrogen chloride.
  • the plastic waste is then burned on the grate of an incinerator.
  • the combustion gas from the furnace is then cooled with water and the fly ash is removed. The gas then escapes through a chimney.
  • the air for indirect preheating of the plastic waste in the rotary kiln is heated in an air heater, which is located in the flue gas chimney of the incinerator, and is circulated to the air jacket of the rotary kiln.
  • the object of the invention is to keep the heating device of the carbonization system completely or largely free of corrosion, and also to enable the conversion of environmentally harmful gases in the afterburning chamber to those with a low pollutant content, which can be done with simple design means should be achieved.
  • the invention provides the features of the characterizing part of the patent claim.
  • the system according to the invention ensures that the pollutant-laden gases entering the afterburner chamber at a temperature of approximately 1400 ° C. are kept at a temperature of 1200 ° C. and above for a residence time of 1.0-5.0 seconds, preferably 2 seconds , so that this conversion into a gas with a low pollutant content can take place during this time. Furthermore, there is the advantage that the heat extracted from the gas of the afterburning chamber benefits the smoldering process in that the gas heating the smoldering device is heated in the heat exchanger of the afterburning chamber, and this in a closed circuit between the smoldering device and the heat exchanger of the afterburner, so that corrosion in the parts of this circuit is avoided.
  • a smoldering drum is used as the smoldering device 1, to which the material to be smoldered is fed via a screw 2, the smoldered material leaving the smoldering drum in the direction of arrow 3.
  • the heating gas required for the smoldering process reaches the drum via the feed 4 and is discharged via the line 5.
  • the afterburning chamber 8 which is preferably arranged upright, is assigned to the smoldering device 1 via the lines 6, 7.
  • the pollutant-laden burner gases pass into it from the carbonization drum in the direction of arrow 9 into the afterburning chamber through the nozzle 10 in the direction of arrow 11.
  • a heat exchanger provided with the general reference number 12 is arranged in the upper region of the afterburning chamber 8.
  • this line 7 opens and leads the heat exchanger from the smoldering device 1 recycle gas, preferably an inert gas or the like, and leaves this gas via line 6 again come to the smoldering drum 1, so that a closed circuit via the smoldering device, the lines 6 and 7 and the heat exchanger 12 is given.
  • recycle gas preferably an inert gas or the like
  • the gases of the afterburning chamber 8 enter in the direction of arrow 9 at a temperature of 1400 ° C. in the upper section 12a of the heat exchanger 12. They have a flow rate of about 2-4 m / sec, so that, taking into account the diameter of the heat exchanger 12, the gases have a residence time of 1-5 sec, preferably 2 sec, in the afterburning chamber.
  • the length or height L of the exchanger 12 is chosen such that the given residence time of 1-5 seconds within the heat exchanger is ensured at the given speed of the gases in the afterburner chamber. It is immaterial whether the temperature of the gas has already dropped to 1200 ° C over a height L 1, the only important thing is that the residence time of 1.0-5.0 seconds, preferably 2 seconds, is maintained.
  • the length L of the heat exchanger, on the one hand, or the flow rate of the gases in the afterburner chamber within the heat exchanger area, on the other hand, is selected so that the above-mentioned parameters (residence time and temperature) are observed. It is during this time that environmentally harmful gases are converted into gases with a low pollutant content.
  • Temperature measuring devices 14 can be provided, the lowest of which Temperature measuring device 14a is arranged at the outlet of the burned gases 12b of the heat exchanger 12.
  • the heat exchanger itself is designed as a cylindrical ring part with an outer wall 15 and an inner wall 16, the inner wall 16 having a lining 17. Aggressive components of the post-combustion chamber gases can run downwards there.
  • a bypass line 19 with a control valve 20 is provided. This is preferably connected to the temperature measuring device 14a via a control line 21. If the temperature measuring device 14a recognizes that the temperature in the outlet of the burned gases 12b falls below 1200 ° C., the valve 20 controls a part of the approximately 750 ° C.
  • the temperature in the inlet connection 22 of the heat exchanger 8 is increased, so that a temperature of 1200 ° C. is ultimately also maintained in the lower section 12b of the heat exchanger 12. It can thus be ensured by the control via the bypass 19 and the valve 20 that in any case over the length L of the heat exchanger 12 with a residence time of the temperature of 1200 ° C. and more is preferably maintained for 2 seconds in order to convert the environmentally harmful gases into low-emission gases.
  • the low-pollutant gases leave the afterburning chamber via line 11 and can be used in a downstream superheater 23.
  • the material and the thickness of the lining, which is preferably locked on the inner wall, must be selected accordingly.
  • the bypass 19 serves with its control option.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
EP89100361A 1988-02-03 1989-01-11 Anlage zum Verschwelen von Abfallstoffen Expired - Lifetime EP0326817B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3803096 1988-02-03
DE3803096 1988-02-03
DE3804853A DE3804853A1 (de) 1988-02-03 1988-02-17 Anlage zum verschwelen von abfallstoffen
DE3804853 1988-02-17

Publications (3)

Publication Number Publication Date
EP0326817A2 EP0326817A2 (de) 1989-08-09
EP0326817A3 EP0326817A3 (en) 1990-06-27
EP0326817B1 true EP0326817B1 (de) 1992-12-02

Family

ID=25864494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100361A Expired - Lifetime EP0326817B1 (de) 1988-02-03 1989-01-11 Anlage zum Verschwelen von Abfallstoffen

Country Status (4)

Country Link
US (1) US4913064A (ru)
EP (1) EP0326817B1 (ru)
DE (2) DE3804853A1 (ru)
UA (1) UA13104A (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19528018B4 (de) * 1995-07-31 2005-12-15 Eisenmann Maschinenbau Gmbh & Co. Kg Anlage für die thermische Behandlung von organische Bestandteile aufweisenden Materialien zur thermischen Entsorgung von Abfallstoffen, Haus-, Industrie- und/oder Sondermüll, chemischen Rückständen und/oder dergleichen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815187A1 (de) * 1988-05-04 1989-11-16 Siemens Ag Temperaturgeregelte anlage zur thermischen abfallentsorgung
CN110801724B (zh) * 2019-11-14 2023-12-19 西安交通大学 一种具有腐蚀防控功能的烟气污染物脱除系统
CN111807671A (zh) * 2020-06-15 2020-10-23 上海市政工程设计研究总院（集团）有限公司 一种污泥焚烧与碳化协同处理的系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026970A1 (de) * 1969-10-03 1971-04-22 Tvtr Meissner, W , Dipl Ing , Tischer, H , Dipl Ing, Pat Anwalte, 1000 Berlin und 8000 München Verfahren und Vorrichtung zum Verbrennen von Kunststoff Abfallen
US3749030A (en) * 1971-11-08 1973-07-31 Wasteco Inc Heating and exhaust emission control system and method for material dryers
US3818869A (en) * 1973-01-02 1974-06-25 Combustion Eng Method of operating a combined gasification-steam generating plant
GB1562492A (en) * 1976-08-02 1980-03-12 Foster Wheeler Power Prod Pyrolysis of waste
DE3504810A1 (de) * 1985-02-13 1986-08-14 Hoelter Heinz Verfahren zur thermischen umsetzung von dioxin
US4676177A (en) * 1985-10-09 1987-06-30 A. Ahlstrom Corporation Method of generating energy from low-grade alkaline fuels
US4656955A (en) * 1986-05-01 1987-04-14 Kuo Tsung H Refuse incineration system
US4746290A (en) * 1986-05-29 1988-05-24 International Technolgy Corporation Method and apparatus for treating waste containing organic contaminants
DE3625397A1 (de) * 1986-07-26 1988-02-04 Gutehoffnungshuette Man Nachbrennkammer hinter einem verbrennungsofen einer verbrennungseinrichtung fuer chemischen abfall
DE3633212A1 (de) * 1986-09-30 1988-04-14 Kwu Umwelttechnik Gmbh Pyrolyseanlage
DE3730339A1 (de) * 1987-09-10 1989-03-30 Voith Gmbh J M Mehrstufiges wechselgetriebe
ATE68814T1 (de) * 1988-05-04 1991-11-15 Siemens Ag Anlage zur entsorgung von abfallstoffen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19528018B4 (de) * 1995-07-31 2005-12-15 Eisenmann Maschinenbau Gmbh & Co. Kg Anlage für die thermische Behandlung von organische Bestandteile aufweisenden Materialien zur thermischen Entsorgung von Abfallstoffen, Haus-, Industrie- und/oder Sondermüll, chemischen Rückständen und/oder dergleichen

Also Published As

Publication number Publication date
US4913064A (en) 1990-04-03
DE58902837D1 (de) 1993-01-14
EP0326817A2 (de) 1989-08-09
EP0326817A3 (en) 1990-06-27
DE3804853A1 (de) 1989-08-17
DE3804853C2 (ru) 1990-05-03
UA13104A (ru) 1997-02-28

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