EP0340537B1 - Anlage zur Entsorgung von Abfallstoffen - Google Patents

Anlage zur Entsorgung von Abfallstoffen Download PDF

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Publication number
EP0340537B1
EP0340537B1 EP89107049A EP89107049A EP0340537B1 EP 0340537 B1 EP0340537 B1 EP 0340537B1 EP 89107049 A EP89107049 A EP 89107049A EP 89107049 A EP89107049 A EP 89107049A EP 0340537 B1 EP0340537 B1 EP 0340537B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
heat exchanger
chamber
secondary combustion
temperature
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
EP89107049A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0340537A1 (de
Inventor
Karl-Wolfgang May
Frohmut Vollhardt
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.)
Takuma Co Ltd
Mitsui Engineering and Shipbuilding Co Ltd
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
Priority to AT89107049T priority Critical patent/ATE68814T1/de
Publication of EP0340537A1 publication Critical patent/EP0340537A1/de
Application granted granted Critical
Publication of EP0340537B1 publication Critical patent/EP0340537B1/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/302—Treating pyrosolids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/303—Burning pyrogases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/304—Burning pyrosolids

Definitions

  • the invention relates to a plant for the disposal of waste materials with a smoldering device and a combustion chamber.
  • Plants for the incineration of hazardous waste are in use, in which an afterburning chamber is connected downstream of a rotary kiln (combustion chamber).
  • the temperature in this combustion chamber is between 1200 and 1400 ° C; a gas velocity of 2-4 m / sec can be determined.
  • a system is known in which the pyrolysis residue obtained from a pyrolysis reactor after grinding through a sieve into a coarser coarse fraction (inorganic substances such as metals, ceramics, glass) and a finer coarse fraction (high proportion of carbon-containing components) is separated.
  • the metals are separated from the coarser coarse fraction.
  • the finer coarse fraction is burned together with coal in a further comminuted form in a combustion chamber and is used thermally in this way.
  • the carbonization gas produced during pyrolysis from which oils and tars with a high boiling point were initially removed in a condenser, is also fed to the combustion chamber.
  • the combustion chamber in the known system is the combustion chamber of a conventional coal combustion system, and that the combustion chamber is part of a steam generator. Because of the usual cooling in such a system Combustion chamber walls are to be feared that pollutants from the combustion of the pyrolysis gas as well as from the combustion of the pyrolysis residue can at least partially pass through the incineration plant used and be released into the environment (air, special landfills, earth, water). This applies, for example, to organic pollutants, but also to heavy metal oxides such as cadmium, zinc, mercury and thallium oxide. None is said in this document about the use of the combustion chamber residues.
  • the object of the invention is to keep the heating device of the carbonization device completely or largely free of corrosion. Furthermore, the conversion of environmentally harmful gases into those with a low pollutant content should be made possible. This is to be achieved with structurally simple means.
  • the combustion chamber is provided with an afterburning chamber, that the heating gas for the smoldering device is passed in a closed circuit through the smoldering device and a heat exchanger on the afterburning chamber, that the afterburning chamber is provided on the inside with a lining which is suitable for a flue gas temperature of 1200 ° C or above is designed, and that the residence time of the flue gases in a residence zone in the combustion chamber and the afterburner chamber is 1 to 5 seconds.
  • the retention zone can extend up to or into the area of the afterburning chamber cooled by the heat exchanger.
  • a first preferred embodiment is characterized in that the combustion chamber and the afterburning chamber are aligned in a straight line, and in that the heat exchanger is arranged at the lower end of the afterburning chamber.
  • a second preferred embodiment is characterized in that the afterburning chamber is U-shaped and has a first leg and a second leg connected to the combustion chamber, and in that the heat exchanger is arranged on the second leg, preferably at the end thereof.
  • the residence zone lies in the afterburning chamber, in each case - in the direction of flow of the flue gases - in front of the heat exchanger.
  • the system according to the invention ensures that the in the afterburning chamber with a temperature of over 1200 ° C, e.g. 1400 ° C entering pollutant-laden gases with a residence time of 1-5 sec, preferably 2 sec, at a temperature of 1200 ° C and above. During this dwell time, the high-molecular organic harmful gas constituents are broken down into low-molecular gas components. Furthermore, there is the advantage that the heat extracted from the flue gas of the afterburning chamber benefits the smoldering process in that the heating gas of the smoldering device is heated in the afterburning chamber. This takes place in a closed circuit between the smoldering device and the heat exchanger of the afterburning chamber, so that corrosion in the parts of this circuit in contact with the heating gas is avoided.
  • a pyrolysis drum is used as the pyrolysis reactor or carbonization device 1, to which the material (waste) G to be carbonized is fed via a screw 2.
  • the smoldered material namely carbonization gas s and solid pyrolysis residue r, leaves the carbonization drum 1 in the direction of arrow 3 via a discharge device 3A.
  • the heating gas h required for the smoldering process passes into the drum 1 via a feed 4, and is discharged from there via a discharge 5.
  • a main or high-temperature combustion chamber 18, which is preferably arranged upright, is assigned to the smoldering device 1 together with the discharge device 3A via lines 3R, 3S. Your burner is charged with the carbonization gas s and additionally with the pyrolysis residue r comminuted in a residue preparation plant 26 and discharged by a screw 27.
  • An associated afterburning chamber, designated 8, is arranged in a straight line below it.
  • the pollutant-laden flue gases predominantly enter the afterburning chamber 8 from the high-temperature combustion chamber 18 (alternatively: from another source) in the direction of the arrow 9. They leave the afterburning chamber 8 through a nozzle 10 in the direction of the arrow 11.
  • the heat exchanger 10 is a heat recovery steam generator 30 and this is followed by a flue gas filter 32 and a flue gas cleaning system (not shown). Airborne dust can be removed from both systems 30, 32, which is indicated by arrows 34 and 36, respectively.
  • the afterburning chamber 8 is provided at the lower end with a slag outlet or discharge 40 for the automatic drainage of molten slag. The slag is passed into a water bath 42, where it solidifies into a glass-like substance.
  • a heat exchanger provided with the general reference number 12 is arranged at the lower region of the afterburning chamber 8.
  • a line 7a opens, which is fed from the trigger 5 via a line 7. It feeds the heat exchanger 12, preferably air, an inert gas or the like, to the heat exchanger 12 via the upper feed pipe 22 from the heating gas outlet 5 of the smoldering device 1.
  • This heating gas h is fed from the lower discharge pipe 23 under the action of a fan 28 via lines 6 and 6a back to the entrance of the carbonization drum 1.
  • a closed circuit is thus provided via the carbonization device 1, the lines 7 and 7a, the heat exchanger 12 and the lines 6a and 6.
  • the flue gases enter in the direction of arrow 9 at a temperature of over 1200 ° C., for example at approximately 1400 ° C., into the upper section 8a of the afterburning chamber 8. They have a low flow rate, for example of about 2-4 m / sec, so that, taking into account the diameter of the afterburning chamber 8, the gases have a residence time in the afterburning chamber 8 of 1 to 5 seconds, preferably 2 seconds, before cooling at or below 1200 ° C.
  • the corresponding dwell is designated S.
  • the length or height of the afterburning chamber 8 is chosen here in such a way that, given the speed of the gases in the afterburning chamber 8, the above-mentioned dwell time of 1 to 5 seconds before entry into the heat exchanger 12 is ensured.
  • temperature measuring devices 14 can be provided, of which only the lowest temperature measuring device 14b is shown in the lower section 8b of the afterburning chamber 8.
  • the heat exchanger 12 itself can be designed as a cylindrical ring part with an outer wall 15 and an inner wall 16, the inner wall 16 having a lining 17 forming the interior.
  • a bypass line 19 with a control valve 20 is provided between the two lines 6 and 7, for example in the vicinity of the afterburning chamber 8. This is preferably connected via a control line 21 to a temperature measuring device 14t.
  • the energy requirement of the pyrolysis reactor 1 is regulated via the bypass 19 and the valve 20.
  • the valve 20 controls a part of the inert circuit heating gas h of the line part 6a, for example at about 750 ° C., via the bypass line 19 in the line part 7a and the nozzle 22 of the heat exchanger 12. This part mixes with the heating gases of the smoldering device 1 arriving via the line 6 at a temperature of about 250 ° C.
  • the flue gas leaves the afterburning chamber 8 via the nozzle 10; it is used thermally in the downstream heat recovery steam generator 30.
  • the straight line arrangement of the combustion chamber 18 and the afterburning chamber 8 can be disadvantageous if a low overall height is important.
  • a U-shaped post-combustion chamber 8 can be used, as can be seen from FIG. 2.
  • the same components are given the same reference numerals as in FIG. 1.
  • the first leg 8a of the afterburning chamber 8 is connected in a straight line to the main combustion chamber 18.
  • the heat exchanger 12, which can again be cylindrical, is arranged on the second leg 8b, for example at the end thereof.
  • the discharge 40 for the molten slag lies at the lowest point between the legs 8a, 8b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Incineration Of Waste (AREA)
  • Fertilizers (AREA)
  • Catching Or Destruction (AREA)
EP89107049A 1988-05-04 1989-04-19 Anlage zur Entsorgung von Abfallstoffen Expired - Lifetime EP0340537B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107049T ATE68814T1 (de) 1988-05-04 1989-04-19 Anlage zur entsorgung von abfallstoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815186 1988-05-04
DE3815186 1988-05-04

Publications (2)

Publication Number Publication Date
EP0340537A1 EP0340537A1 (de) 1989-11-08
EP0340537B1 true EP0340537B1 (de) 1991-10-23

Family

ID=6353615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107049A Expired - Lifetime EP0340537B1 (de) 1988-05-04 1989-04-19 Anlage zur Entsorgung von Abfallstoffen

Country Status (5)

Country Link
EP (1) EP0340537B1 (enrdf_load_stackoverflow)
AT (1) ATE68814T1 (enrdf_load_stackoverflow)
DE (1) DE58900393D1 (enrdf_load_stackoverflow)
ES (1) ES2026712T3 (enrdf_load_stackoverflow)
GR (1) GR3003521T3 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804853A1 (de) * 1988-02-03 1989-08-17 Gutehoffnungshuette Man Anlage zum verschwelen von abfallstoffen
DE4100859A1 (de) * 1990-07-25 1992-02-06 Siemens Ag Anlage und verfahren zur entsorgung von abfallstoffen
EP0495766A3 (en) * 1991-01-14 1992-12-23 Tbr Gesellschaft F. Techn. Bodenreinigung Ges.M.B.H. Method for the utilization of residual material from pyrolysis and of pyrolysis gas
DE4103605A1 (de) * 1991-02-07 1992-08-13 Siemens Ag Verfahren und einrichtung zum heizen einer schweltrommel
DE4104507C2 (de) * 1991-02-14 1997-08-07 Elsner Emil Dr Ing Verfahren und Vorrichtung zum Verarbeiten von Abfallstoffen, insbesondere Hausmüll, zu einem brennbaren Gasgemisch, Metallen und Schlacke
DE4107200A1 (de) * 1991-03-06 1992-09-10 Siemens Ag Verfahren und anlage zur thermischen abfallbehandlung
US5935387A (en) * 1992-02-17 1999-08-10 Siemens Aktiengesellschaft Method and device for heating a low temperature carbonization drum and low temperature carbonization/combustion plant having the device
RU2076501C1 (ru) * 1995-05-15 1997-03-27 Акционерное общество закрытого типа "РОБЕНТЕХ" Способ переработки резиновых отходов
CN112762459B (zh) * 2020-12-22 2023-05-23 无锡市阳泰环境科技有限公司 一种飞灰中二噁英的消除装置及其方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1562492A (en) * 1976-08-02 1980-03-12 Foster Wheeler Power Prod Pyrolysis of waste
DE3039469C2 (de) * 1980-10-18 1985-06-05 Heinz Dipl.-Ing. 4390 Gladbeck Hölter Verfahren zur energetischen Nutzung von Gestein mit Kohleeinschlüssen und/oder normaler Förderkohle
US4395958A (en) * 1981-12-21 1983-08-02 Industronics, Inc. Incineration system
DE3400976A1 (de) * 1984-01-13 1985-08-01 Saarberg-Hölter-Umwelttechnik GmbH, 6600 Saarbrücken Energiesystem zur umweltfreundlichen muellentgasung bzw. kohle-muell-entgasung mit nachgeschalteter wirbelbettfeuerung und integrierter schwelgasbrennkammer und waermeaustauscher

Also Published As

Publication number Publication date
DE58900393D1 (de) 1991-11-28
EP0340537A1 (de) 1989-11-08
GR3003521T3 (enrdf_load_stackoverflow) 1993-03-16
ES2026712T3 (es) 1992-05-01
ATE68814T1 (de) 1991-11-15

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