EP0680583A1 - Procede d'incineration de dechets composes principalement de matieres plastiques, notamment de dechets en pvc - Google Patents

Procede d'incineration de dechets composes principalement de matieres plastiques, notamment de dechets en pvc

Info

Publication number
EP0680583A1
EP0680583A1 EP94905103A EP94905103A EP0680583A1 EP 0680583 A1 EP0680583 A1 EP 0680583A1 EP 94905103 A EP94905103 A EP 94905103A EP 94905103 A EP94905103 A EP 94905103A EP 0680583 A1 EP0680583 A1 EP 0680583A1
Authority
EP
European Patent Office
Prior art keywords
plastic
waste
additive
combustion
pvc
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.)
Granted
Application number
EP94905103A
Other languages
German (de)
English (en)
Other versions
EP0680583B1 (fr
Inventor
Theo Burkard
Christoph Schmid
Hans Sobolewski
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.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6478801&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0680583(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Publication of EP0680583A1 publication Critical patent/EP0680583A1/fr
Application granted granted Critical
Publication of EP0680583B1 publication Critical patent/EP0680583B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/12—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/70—Blending
    • F23G2201/701—Blending with additives

Definitions

  • the invention relates to a method of the type mentioned in the preamble of claim 1.
  • the combustion in the rotary kiln and the addition of the finely divided solid additive influences the pyrolysis phase when the plastic is burned (melting of the plastic, escape and partial burnout of volatile components and coking) so that the coke that forms does not bake the rotary kiln loose structure burns out as quickly as possible.
  • This is essentially attributed to the fact that the plastic settles on the finely divided additive after it has melted, and thus a significantly larger surface area is available for the further stages of the pyrolysis phase. In other words, a coke structure forms, which leads to an essentially complete burnout. It is preferred that such an additive is used that even at the end of the combustion the melting temperature of the at least one component is not reached.
  • the temperature at the end of the rotary kiln can e.g. B. are in the range of 1 100 - 1 300 ° C.
  • the “melting temperature of the plastic” is also understood to mean a temperature window, since when a mixture of different plastics is used, it does not depend on a uniform melting temperature
  • the window can extend between 70 and 200 ° C, more preferably between 80 and 150 ° C.
  • the combustion in a rotary kiln ensures a sufficient dwell time for the essentially uniform distribution of the softened or melted plastic on the parts of the solid additive.
  • the incineration of solid waste, especially hazardous waste, industrial waste or the like in a rotary kiln has already been proposed, but in the general incineration of plastic waste, baking and burnout problems are likely to occur.
  • additives are preferably selected from the group:
  • a fuel is also added to the process if the calorific value of the plastic waste alone is not sufficient.
  • an additional effect can be achieved in that volatile constituents also contribute to loosening the coke structure and thus to better burnout due to outgassing.
  • this plastic waste consists to a large extent of chlorine and, like other plastics, also contains at least one additive.
  • Possible additives are: stabilizers in the form of inorganic heavy metal salts, metal soaps, in particular Ba, Cd, Pb, Zn, Ca and other organometallic compounds.
  • PVC can also be adjusted against UV light by adding UV absorbers.
  • Inorganic and organic pigments are added to color plastic products.
  • X Plasticizers may also be required.
  • plastic mixtures can also contain other additives, such as blowing agents, coupling agents, fillers, lubricants, antistatic agents, fungicides and the like;
  • the fillers are of particular importance because they are up to 50% by weight can be contained in the plastic, in particular in PVC.
  • a fine-particle solid additive is used which leads to an elution-resistant combustion residue with the additive.
  • an additive containing SiO 2 and / or Al 2 O 3 is used in the combustion of plastic which contains an alkali and / or alkaline earth filler;
  • plastic which contains an alkali and / or alkaline earth filler;
  • an alkali and / or alkaline earth filler for this purpose, from the above-mentioned group, quartz sand, gravel, fine chippings on the one hand or bauxite, alumina on the other hand, as well as the incineration residues that may occur and are comminuted during the incineration of the plastic waste.
  • Ingredients introduced with the other additives can also be partially bound to the eluate by the silicate and / or aluminate formation.
  • silicate and / or aluminate has the advantage that the desired recovery of the chlorine content is optimized in terms of quantity, since the combustion does not lead to the formation of water-soluble calcium chloride to a large extent.
  • the mixture can be stabilized by adding a wetting liquid.
  • a calcium chloride solution can be used as the wetting agent, which is formed during the cleaning of the flue gas with simultaneous recovery of hydrogen chloride as waste liquor. This process can also have a mud-like consistency.
  • the recovery of Hydrogen chloride in PVC combustion from the flue gas is part of the prior art and need not be described in more detail here.
  • a lye from the leaching treatment of the combustion residues can also be used alone or in admixture with the leachate from the flue gas treatment as a mixing aid.
  • the method according to the invention also offers a simple possibility of using finely divided solid materials containing organic compounds, in particular
  • Chlorinated hydrocarbons are contaminated to be disposed of by being introduced into the rotary kiln as fine-particle additives in the sense of the invention. Contaminated soils, which are formed by contaminated sands and / or gravel, are particularly addressed here.
  • PVC waste 1 is fed to a mixer 2 continuously or discontinuously.
  • This mixer can be designed in various forms, e.g. B. as a paddle mixer, mixing screw, ploughshare mixer or the like.
  • the PVC waste is mixed with recycled combustion residues 3, quartz sand 4 and lignite 5 with the addition of water-containing calcium chloride sludge 6. Possibly. water 7 alone can also be supplied instead of the sludge. Attention is drawn to the fact that the figure concerns only one example; In the light of the above statements in the introduction to the description, the addition of one of the finely divided solid additives 3, 4 or 5 may also be sufficient.
  • the calcium chloride sludge originating from flue gas cleaning, however, it is expedient that it can be returned to the combustion as a whole, since no noteworthy possible uses can be assigned to the calcium chloride itself.
  • the mixture 7 is fed via a feed device 8 to a rotary kiln 9, which can optionally be provided with an afterburning chamber.
  • the calcium carried by the PVC is converted into an almost insoluble calcium silicate.
  • the reaction of Si0 2 with the calcium chloride at temperatures above 1000 ° C practically completely from left to right.
  • the combustion residues 3, the sand 4 and the inert components of the brown coal 5 lead to a loose structure of the coke formed during the combustion, whereby an essentially complete burnout is achieved.
  • combustion residues 10a drawn off from the rotary tube 9 are subjected to a laundry known per se and possibly heavy metal leaching in a combustion residue treatment device 11.
  • Part 3 of the Combustion residues are fed to the mixer 2 after a shredding treatment 12 - as described above.
  • the flue gas 10b withdrawn from the rotary kiln is fed to a flue gas treatment system 13, from which cleaned flue gas 14 and hydrogen chloride 15 and a CaCl 2 -containing flue gas treatment waste liquor 16 are drawn off.
  • This waste liquor can be fed into the mixer 2 alone or together with the waste liquor 1 of the combustion residue treatment plant after heavy metal precipitation.
  • the part of the elution-resistant combustion residues that is not returned to the mixer is deducted. If no combustion residue recycling is intended, the total amount of combustion residue is subtracted at 18.
  • the process according to the invention has the advantage that the coke structure is loosened in a manner that promotes burnout, that at least a substantial part of the additives present in PVC is converted into eluate-resistant combustion residues and that the hydrogen chloride formed during combustion can be recovered with a relatively high yield. It goes without saying that the heat released during combustion is used by exchanging heat with the flue gas, in particular for generating steam.
  • the plastic waste consists essentially of plastic, since impurities such as fittings can be present in the case of plastic windows, which are introduced into the rotary kiln.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Incineration Of Waste (AREA)

Abstract

Selon le procédé, pour assurer une meilleure combustion, les déchets sont incinérés dans un fourneau rotatif (9) sous apport d'au moins un additif (3, 4, 5) solide moulu finement et contenant un composant ayant une température de fusion supérieure à celle des matières plastiques.
EP94905103A 1993-01-23 1994-01-21 Procede d'incineration de dechets composes principalement de matieres plastiques, notamment de dechets en pvc Expired - Lifetime EP0680583B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4301814A DE4301814A1 (de) 1993-01-23 1993-01-23 Verfahren zum Verbrennen eines im wesentlichen aus Kunststoff bestehenden Abfalls, insbesondere PVC-Abfall
DE4301814 1993-01-23
PCT/EP1994/000156 WO1994017332A2 (fr) 1993-01-23 1994-01-21 Procede d'incineration de dechets composes principalement de matieres plastiques, notamment de dechets en pvc

Publications (2)

Publication Number Publication Date
EP0680583A1 true EP0680583A1 (fr) 1995-11-08
EP0680583B1 EP0680583B1 (fr) 1997-12-10

Family

ID=6478801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94905103A Expired - Lifetime EP0680583B1 (fr) 1993-01-23 1994-01-21 Procede d'incineration de dechets composes principalement de matieres plastiques, notamment de dechets en pvc

Country Status (4)

Country Link
US (1) US5551358A (fr)
EP (1) EP0680583B1 (fr)
DE (2) DE4301814A1 (fr)
WO (1) WO1994017332A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685244A (en) * 1995-06-28 1997-11-11 Textron Systems Corporation Gas-fired smelting apparatus and process
AUPN644895A0 (en) * 1995-11-08 1995-11-30 Miltox Holdings Pte Ltd Method and apparatus for waste treatment
DE19534558C1 (de) * 1995-09-18 1996-11-07 Siemens Ag Additiv zum Verbrennen von Kohle in einem Kohlekraftwerk mit Schmelzkammerfeuerung
JPH1096507A (ja) * 1996-08-02 1998-04-14 Yamaichi Kinzoku Kk 廃棄樹脂処理用バーナ
US5992335A (en) 1996-09-13 1999-11-30 Nkk Corporation Method of blowing synthetic resin into furnace and apparatus therefor
DE19706606A1 (de) * 1997-02-20 1998-08-27 Babcock Anlagen Gmbh Verfahren zur Regelung der Temperatur in thermischen Abfallbehandlunganlagen und Abfallbehandlunganlage
DE10213788B4 (de) * 2002-03-27 2007-04-26 Martin GmbH für Umwelt- und Energietechnik Verfahren zur Beeinflussung der Eigenschaften von Verbrennungsrückständen aus einer Verbrennungsanlage
CN111750358B (zh) * 2020-05-29 2021-09-10 浙江科茂环境科技有限公司 一种废塑料绿色油化技术嵌入垃圾焚烧方法

Family Cites Families (9)

* 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
JPS59183209A (ja) * 1983-03-31 1984-10-18 Kawasaki Heavy Ind Ltd 廃プラスチツクを多量に含有するごみの流動床燃焼方法
DE3316299C2 (de) * 1983-05-04 1985-03-07 Defo-Chemie GmbH, 8000 München Verfahren zum Verbrennen von Müll
DE3327448A1 (de) * 1983-05-04 1985-02-07 Defo-Chemie GmbH, 8000 München Verfahren zum verbrennen von muell
DE3444073A1 (de) * 1984-12-03 1986-06-05 Dyckerhoff Engineering GmbH, 6200 Wiesbaden Verfahren und anlage zum verbrennen von abfaellen wie haus-, industrie- und sondermuell
DE3718669A1 (de) * 1987-06-04 1988-12-15 Metallgesellschaft Ag Verfahren zur aufarbeitung von kontaminierten mineralstoffen
US4771712A (en) * 1987-06-24 1988-09-20 A. Ahlstrom Corporation Combustion of fuel containing alkalines
US4953481A (en) * 1989-09-01 1990-09-04 Utility Chemicals, Inc. Method for control of slag build-up in solid waste incinerators
DE3931900A1 (de) * 1989-09-25 1991-04-04 Forschungszentrum Juelich Gmbh Verfahren zum verbrennen granularer kunstharzabfaelle, insbesondere von ionenaustauschern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9417332A2 *

Also Published As

Publication number Publication date
DE4301814A1 (de) 1994-07-28
EP0680583B1 (fr) 1997-12-10
DE59404781D1 (de) 1998-01-22
WO1994017332A3 (fr) 1994-09-29
US5551358A (en) 1996-09-03
WO1994017332A2 (fr) 1994-08-04

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