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EP0661367A1 - Procédé de traitement de déchets - Google Patents

Procédé de traitement de déchets Download PDF

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Publication number
EP0661367A1
EP0661367A1 EP94890218A EP94890218A EP0661367A1 EP 0661367 A1 EP0661367 A1 EP 0661367A1 EP 94890218 A EP94890218 A EP 94890218A EP 94890218 A EP94890218 A EP 94890218A EP 0661367 A1 EP0661367 A1 EP 0661367A1
Authority
EP
European Patent Office
Prior art keywords
fermentation process
biological
rotting
annealing treatment
subjected
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
EP94890218A
Other languages
German (de)
English (en)
Other versions
EP0661367B1 (fr
Inventor
Reinhard Ing. Göschl
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.)
Technisches Buero Ing Reinhard Goschl
Original Assignee
Technisches Buero Ing Reinhard Goschl
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 Technisches Buero Ing Reinhard Goschl filed Critical Technisches Buero Ing Reinhard Goschl
Publication of EP0661367A1 publication Critical patent/EP0661367A1/fr
Application granted granted Critical
Publication of EP0661367B1 publication Critical patent/EP0661367B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • 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

Definitions

  • the invention relates to a method for treating residual waste, in which the light fraction is implemented by thermal methods and the heavy fraction is subjected to a biological rotting or fermentation process.
  • Residual waste usually comes from municipal, commercial or industrial waste and arises after the previous collection and recycling of all material and biological components in the waste. These substances are collected using the well-known, different methods and used for material or biological recycling. The remaining remainder as well as the remnants from the treatment plants for material and biological recycling form the residual waste.
  • the composition of the residual waste to be treated is similar to that of mixed household waste, but has a lower content of organic substances, but an increased content of plastic waste.
  • a method of the type mentioned at the outset is now known, in which there is the possibility of combining the two methods, namely the so-called “residual waste splitting method”.
  • a fuel with a high proportion of ignition loss is mechanically separated and subjected to a targeted thermal utilization by means of light fraction incineration plants or light fraction pyrolysis plants.
  • the remaining heavy fraction is subjected to a biological rotting or fermentation process, optionally with the addition of sewage sludge.
  • the end product obtained there does not meet the requirements of the "Technical instructions for municipal waste" with regard to the maximum loss on ignition of the dry matter.
  • the invention is therefore based on the object of providing a method of the type mentioned at the outset with which the prescribed parameters for the remaining constituents to be deposited are achieved.
  • this object is achieved in that the material coming from the biological rotting or fermentation process of the heavy fraction is subjected to an annealing treatment, preferably at a temperature of approximately 1600 ° C.
  • an annealing treatment preferably at a temperature of approximately 1600 ° C.
  • the product is converted into a melt state and has a glass-like character at the outlet of the corresponding furnace. Landfilling is easily possible according to all current regulations.
  • the material coming from the biological rotting or fermentation process can be freed of the remaining light materials by air separation prior to the annealing treatment.
  • This has the advantage that those substances which are not necessarily to be subjected to the annealing treatment, since they can be used elsewhere, do not burden the annealing process and thus the energy balance.
  • the light substances separated by wind sifting can be added to the light fraction prior to their thermal utilization, whereby the energy content contained in the light substances can be used particularly well.
  • the exhaust gases resulting from the annealing treatment can, if necessary, Cleaning, be introduced into the biological rotting or fermentation process, whereby the resulting exhaust gases are processed accordingly in the biological treatment plant, so that pollution of the environment by these exhaust gases is eliminated.
  • the gases introduced to cool the annealing material at the end of the annealing treatment can be used at the beginning of the annealing treatment to heat the material to be annealed.
  • the gases emerging from this after heating the material to be glowed can be dewatered, the resulting wastewater being fed to the biological rotting or fermentation process.
  • FIG. 2 shows a quantity flow diagram with regard to the recycling of residual waste.
  • FIG. 3 shows a basic diagram of the annealing treatment step.
  • the residual waste is separated into a light fraction and a heavy fraction in a mechanical processing plant, in which hazardous waste and valuable materials are separated.
  • the light fraction which can be used thermally, is fed to a special incinerator.
  • the high loss on ignition is used as an energy source and the carbon is burned to carbon dioxide.
  • the light fraction has a high calorific value and has an essentially constant composition, which enables the operation of ecologically sensible and economically favorable combustion plants, for example according to the principle of the circulating fluidized bed.
  • the heavy fraction coming from the mechanical treatment plant is sent to a biological treatment, where appropriate sewage sludge can be added.
  • the biological treatment is a rotting or fermentation process.
  • this biological treatment plant now follows that the material coming from this biological rotting is further processed after it has been separated into a light and heavy fraction by sieving and air separation.
  • the light fraction obtained is mixed with the light fraction, which comes directly from the mechanical processing plant of the residual waste, and burned there.
  • the fraction falling through the sieve or the heavy fraction coming from the air classifier is subjected to an afterglow step.
  • the product is screened through a sieve with a preferred mesh size of 15 mm.
  • the afterglow is carried out in a special tunnel furnace, but it is a prerequisite that the water content of the material emerging in the biological treatment stage is reduced to approximately 20% by weight and that the maximum possible removal of all light materials is achieved by the air classifier.
  • the tunnel kiln is preferably heated by means of electrical resistance heating elements in order to avoid an open flame in the kiln and thereby reduce the risk of fire.
  • the material to be treated is heated to a temperature of around 1600 ° C in this tunnel oven.
  • a glass-like product is then created, which after appropriate cooling can be deposited in any case.
  • the tunnel furnace is designated by 1 in Fig. 3 and has a resistance heating element 2 for annealing the material.
  • the tunnel kiln 1 is loaded via a conveyor belt 3, which places the material via a hopper 4 on the conveyor belt 5 leading through the kiln.
  • the product is then thrown off this conveyor belt 5 at 6 and fed to a landfill.
  • the kiln 1 has a heating zone 7 and a cooling zone 8, which is achieved by a targeted air flow.
  • the product is annealed between these zones.
  • a pump 9 the cooling air is introduced at the end of the cooling zone 8 at the bottom of the furnace, passes through the materials to be cooled and is led out of the furnace at 10 at the upper end.
  • the line 10 then leads into the central region of the heating zone 7, as a result of which the material introduced into the kiln 1 is heated.
  • the warming-up gas led out of the kiln via line 11 is passed through a heat exchanger 12 which is cooled via a fresh water line 13.
  • the cooled gas emerging from the heat exchanger 12, which is mixed with condensate, is fed via a line 14 to a separator 15, the cooled air being introduced via line 16 into the cooling zone of the kiln 1, etc. in the direction of the product flow in front of the line coming from the pump 9.
  • the cooling air is heated by the annealed material and exits the cooling zone of the kiln via line 17 and, after the line 10 flows into the kiln 1, etc.
  • the cleaning station 25 consists of two washing stages 26, 27, in which the pollutants entrained in the exhaust gas are washed out or neutralized. The first washing stage works in the acidic area and the second washing stage in the basic area.
  • the pollutants in the exhaust gas are thereby neutralized and excreted in the wash water treatment system 25 as solids (REA products). These solids should be sent to a hazardous waste landfill.
  • the exhaust gases coming from the washing system 25 are cleaned again via an activated carbon filter 28 in order to separate any special organic pollutants that may also be present.
  • By means of a pump 29, these exhaust gases are discharged through a Line 30 fed to a rotting plant 31, etc. the biological treatment plant of the heavy fraction of the residual waste fraction coming from the mechanical treatment plant.
  • Exhaust gases emerging from this decomposition system 31 are fed to a bio-washing system 33 via a pump 32 and then discharged into the atmosphere via line 34.
  • the condensate coming from the separators 15 and 23, as well as the fresh water emerging from the heat exchanger 12, is fed via lines 35 and 36 into the rotting plant 31 in order to control the moisture balance there and also to break down any pollutant particles that have been carried along.
  • the quantity flow diagram shown in FIG. 2 shows in another form the flow diagram according to FIG. 1, but with the addition of the substrate quantities carried in the individual branches.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Removal Of Specific Substances (AREA)
EP94890218A 1993-12-29 1994-12-22 Procédé de traitement de déchets Expired - Lifetime EP0661367B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2644/93 1993-12-29
AT0264493A AT399864B (de) 1993-12-29 1993-12-29 Verfahren zur behandlung von restmüll

Publications (2)

Publication Number Publication Date
EP0661367A1 true EP0661367A1 (fr) 1995-07-05
EP0661367B1 EP0661367B1 (fr) 1998-09-02

Family

ID=3537967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94890218A Expired - Lifetime EP0661367B1 (fr) 1993-12-29 1994-12-22 Procédé de traitement de déchets

Country Status (3)

Country Link
EP (1) EP0661367B1 (fr)
AT (2) AT399864B (fr)
DE (1) DE59406828D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899509B1 (fr) 1997-07-18 2000-11-02 Amand Entwicklungs GmbH Procédé et installation de traitement thermique de déchets et/ou de fragments de déchets

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736111A (en) * 1971-05-17 1973-05-29 Hercules Inc Process and apparatus for the complete reclamation of valuable products from solid waste
DE3402215A1 (de) * 1984-01-24 1985-07-25 Peter 7869 Holzinshaus Voelskow Verfahren, anlage und einrichtungen zur gleichzeitigen verwertung von muell und klaerschlamm
DE3440484A1 (de) * 1984-11-06 1986-05-07 Peter 7869 Aitern Voelskow Verfahren zur verschwelung teilweise feuchter biomasse - abfaelle
DE3807249C1 (en) * 1988-01-26 1990-02-15 Peter 7869 Aitern De Voelskow A process for the thermal utilisation of organic wastes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736111A (en) * 1971-05-17 1973-05-29 Hercules Inc Process and apparatus for the complete reclamation of valuable products from solid waste
DE3402215A1 (de) * 1984-01-24 1985-07-25 Peter 7869 Holzinshaus Voelskow Verfahren, anlage und einrichtungen zur gleichzeitigen verwertung von muell und klaerschlamm
DE3440484A1 (de) * 1984-11-06 1986-05-07 Peter 7869 Aitern Voelskow Verfahren zur verschwelung teilweise feuchter biomasse - abfaelle
DE3807249C1 (en) * 1988-01-26 1990-02-15 Peter 7869 Aitern De Voelskow A process for the thermal utilisation of organic wastes

Also Published As

Publication number Publication date
AT399864B (de) 1995-08-25
ATE170543T1 (de) 1998-09-15
ATA264493A (de) 1994-12-15
EP0661367B1 (fr) 1998-09-02
DE59406828D1 (de) 1998-10-08

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