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WO1992016261A1 - Procede de preparation de residus d'incineration et/ou de lavage de gaz de fumee - Google Patents

Procede de preparation de residus d'incineration et/ou de lavage de gaz de fumee Download PDF

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Publication number
WO1992016261A1
WO1992016261A1 PCT/EP1992/000625 EP9200625W WO9216261A1 WO 1992016261 A1 WO1992016261 A1 WO 1992016261A1 EP 9200625 W EP9200625 W EP 9200625W WO 9216261 A1 WO9216261 A1 WO 9216261A1
Authority
WO
WIPO (PCT)
Prior art keywords
residues
thermoplastic
micro
paste
plastic
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.)
Ceased
Application number
PCT/EP1992/000625
Other languages
German (de)
English (en)
Inventor
Zbigniew Boguslawski
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.)
AQUAMOT AG
Original Assignee
AQUAMOT 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 AQUAMOT AG filed Critical AQUAMOT AG
Publication of WO1992016261A1 publication Critical patent/WO1992016261A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K11/00—Use of ingredients of unknown constitution, e.g. undefined reaction products
    • C08K11/005—Waste materials, e.g. treated or untreated sewage sludge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
    • B09B3/24—Binders with plastic

Definitions

  • the invention relates to a method for processing residues from combustion and / or flue gas cleaning systems, in particular fly ash.
  • the present invention has for its object to provide a method that would allow a work-up of the mentioned combustion residues in such a way that they can be returned to the material cycle.
  • the invention provides a method by means of which residues from the combustion of solid fossil fuels, which are to be regarded as a valuable secondary raw material, can be fed to an industrially valuable use, which means not only the use of primary raw materials, but also the use of them increasingly the environmental impact that occurs can be reduced.
  • the process according to the invention thus allows the production of light mineral-filled plastic granules using waste materials, for which purpose the gelling micro-coated material is extruded together with other plastic material and the extruded strand is cut into granules.
  • the added plastic material can also consist of waste plastic - cleaned and crushed for this purpose.
  • the residues Due to the hermetic sealing of the individual grains of the residues due to the microgelling and thus preventing an exchange with the environment, it is in principle possible to use the residues without special preprocessing, in particular liberation from heavy metals and other environmentally harmful substances in the manner according to the invention. Regardless of this, however, the residues are advantageously worked up beforehand in such a way that they are ground to a grain size of 20 millimeters before the micro-coating and then by means of known physical and / or chemical processes from their constituents of heavy metal compounds, iron oxide and the water-soluble constituents (nitrate, sulfate, chlorine salts) are freed.
  • the residues are collected in a large amount and then homogenized with air drying if necessary. Homogenization based on a larger amount has the purpose here partly that uniform conditions can be maintained for further processing over a longer period of time.
  • the homogenized material can now either - in another? known manner - to remove the heavy metals, iron oxides, dioxin compounds and water-soluble sal contained in it chemically processed (left branch) and / or encapsulated in the manner according to the invention by microgelation, for which purpose the material is a paste made of thermoplastic Plastic, for example PVC paste, in a quantity of 10 to 15% by weight corresponding approximately to the waste material used, is mixed intensively for a time between 10 and 15 minutes at temperatures between 60 and 80 ° C (right branch)
  • the material micro-gelled in this way can be used as a wholefood filler in the construction industry, but it also allows further processing into a high-quality secondary raw material, for which purpose it is mixed with an inorganic filler such as calcium carbonate and then with a other extruded plastic or waste plastic mixture containing at least 35% thermoplastic material.
  • the extruded material is cut into granules, which can be further processed in the usual known manner by injection molding, pressing or rolling into articles of daily use, such as containers of all kinds, such as refuse containers, (sound) insulation materials, floor coverings, pipes and fittings, apparatus housings or the like.
  • fly ash a from a coal incinerator 1000 g of fly ash a from a coal incinerator are processed in the manner described above.
  • the ground fly ash which has been freed from the constituents above 20 mu, is freed of its iron oxide content (116.7 g) in a manner known per se and then leached out to remove the water-soluble constituents (183.8.
  • Heavy metals 107.6 g are also removed quantitatively in a manner known per se.
  • the recovered components can be reused in the respective species-specific processes, such as the iron oxide and the heavy metals by smelting, the water-soluble salts for the production of chlorine bez potash fertilizers.
  • the remaining fly ash residue of 591.9 g is further processed to "thermoplastic pellets" and for this purpose 15 minutes with an equal amount of 65.0 g of polyvinyl chloride paste 50/50 mixed intensively at a temperature of 80 ° C.
  • 845.6 g of micro-coated grain material result, which is sealed in an environmentally friendly manner due to the micro-coating and can be processed together with other plastic material to form secondary granules for the production of various everyday objects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Selon un procédé de préparation de résidus d'incinération et/ou de lavage de gaz de fumée, les résidus déshydratés et homogénéisés jusqu'à former des grains d'une grosseur aussi uniforme que possible sont micro-enduits d'une pâte en une matière thermoplastique et le matériau ainsi enduit est moulé et granulé avec une matière plastique contenant une certaine quantité de matières thermoplastiques, jusqu'à former un matériau ré-utilisable. Afin de micro-enduire et de micro-gélifier les résidus homogénéisés, on ajoute à ceux-ci une quantité comprise entre 10 et 15 % en poids, par rapport au matériau traité, d'une pâte ou d'une suspension composée d'une matière thermoplastique, à une température comprise entre 80 et 85 °C et le mélange est agité intensivement pendant 10 à 15 minutes, à la température donnée. On utilise une pâte ou une suspension contenant 40 à 50 % en poids de chlorure de polyvinyle. On ajoute ensuite au matériau micro-enduit jusqu'à 30 % en poids d'une matière plastique, le mélange est extrudé à une température de traitement comprise entre 165 et 180 °C et le ruban ainsi formé est découpé en granules. En tant qu'additif d'extrusion, on peut utiliser par exemple des déchets en matières plastiques broyées et nettoyées contenant au moins 35 % de matières thermoplastiques.
PCT/EP1992/000625 1991-03-20 1992-03-20 Procede de preparation de residus d'incineration et/ou de lavage de gaz de fumee Ceased WO1992016261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109126A DE4109126A1 (de) 1991-03-20 1991-03-20 Verfahren zur aufbereitung von verbrennungs- und/oder rauchgasreinigungs-rueckstaenden
DEP4109126.4 1991-03-20

Publications (1)

Publication Number Publication Date
WO1992016261A1 true WO1992016261A1 (fr) 1992-10-01

Family

ID=6427790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/000625 Ceased WO1992016261A1 (fr) 1991-03-20 1992-03-20 Procede de preparation de residus d'incineration et/ou de lavage de gaz de fumee

Country Status (2)

Country Link
DE (1) DE4109126A1 (fr)
WO (1) WO1992016261A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101817987A (zh) * 2010-03-26 2010-09-01 王振宇 电厂废弃物制作硅塑复合圆柱颗粒及其塑料板材制作方法

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DE2539195A1 (de) * 1975-09-03 1977-03-24 Paturle Sa Ets Konstruktionsmaterial sowie verfahren und vorrichtun zu seiner herstellung sowie verfahren und vorrichtung zu seiner weiterverarbeitung
EP0299340A1 (fr) * 1987-07-15 1989-01-18 BBC Brown Boveri AG Méthode pour éliminer des composés des métaux lourds provenant des poussières d'incinération d'ordures, du dépoussiérage des gaz d'échappement ou de la purification des gaz

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EP0299340A1 (fr) * 1987-07-15 1989-01-18 BBC Brown Boveri AG Méthode pour éliminer des composés des métaux lourds provenant des poussières d'incinération d'ordures, du dépoussiérage des gaz d'échappement ou de la purification des gaz

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101817987A (zh) * 2010-03-26 2010-09-01 王振宇 电厂废弃物制作硅塑复合圆柱颗粒及其塑料板材制作方法

Also Published As

Publication number Publication date
DE4109126A1 (de) 1992-09-24

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