WO2004014491A1 - Verfahren zur behandlung halogenhaltiger abfallstoffe - Google Patents
Verfahren zur behandlung halogenhaltiger abfallstoffe Download PDFInfo
- Publication number
- WO2004014491A1 WO2004014491A1 PCT/EP2003/006425 EP0306425W WO2004014491A1 WO 2004014491 A1 WO2004014491 A1 WO 2004014491A1 EP 0306425 W EP0306425 W EP 0306425W WO 2004014491 A1 WO2004014491 A1 WO 2004014491A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyolefin
- waste materials
- halogen
- bromine
- materials containing
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/09—Bromine; Hydrogen bromide
- C01B7/093—Hydrogen bromide
-
- 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
- B09B3/70—Chemical treatment, e.g. pH adjustment or oxidation
Definitions
- the invention relates to a method for treating halogen-containing waste materials according to the first claim.
- halogenated hydrocarbons especially brominated hydrocarbons.
- Brominated hydrocarbons are often used in flame retardants. The proportion of bromine can be 20 to 40% by weight.
- Tetrabro bisphenol A is often used in flame retardants; other commonly used bromine-containing compounds are polybrominated diphenyl ether and bis (tribromophenoxy) ethane.
- hydrocarbons containing chlorine and those containing both chlorine and bromine also play an important role.
- a common way to treat contaminated wastes is to subject them to pyrolysis.
- Pyrolysis has the advantage over other disposal methods such as incineration or landfill that chemical substances and / or energy can be recovered.
- this method is problematic for halogen-containing, in particular bromine and chlorine-containing, waste materials, since it creates a broad spectrum of other toxic compounds.
- tetrabromobisphenol A forms toxic mono- and di-bromophenols when pyrolyzed.
- Other typical pyrolysis products are halogenated p-dibenzodioxins (PBDD) and p-dibenzofurans (PBDF).
- PBDD halogenated p-dibenzodioxins
- PBDF p-dibenzofurans
- polyhalogenated compounds can be separated from the flue gas of an incinerator in contact with polyolefins, in particular with polyethylene and polypropylene.
- polyolefins in particular with polyethylene and polypropylene.
- the polyhalogenated compounds are only reversibly adsorbed in the polyolefins, so that they can be desorbed again under suitable conditions.
- Polyolefins are not suitable as adsorbents under the boundary conditions described in the cited patent specification.
- the invention is based on the object of proposing a process for treating halogen-containing, in particular bromine-containing waste materials, in which, as is generally the case in pyrolysis processes, valuable materials and / or energy can be recovered and the waste materials are at least largely destroyed, but in which, to a greater extent, no additional halogenated pollutants arise.
- the halogen-containing waste materials are mixed with a melted, substituted or unsubstituted polyolefin.
- Halogenated waste materials are to be understood in particular to mean waste materials from the production of components in the electrical and electronics industry, but also electrical and electronic devices themselves or their individual parts.
- the most important field of application of the method is the application to halogenated, preferably brominated, hydrocarbons, which are used in electrical insulation and / or flame protection technology.
- the halogen-containing waste materials are mixed with a melted polyolefin, the temperature of which therefore corresponds at least to the melting temperature.
- the process is carried out under an inert gas atmosphere, since otherwise the polyolefin can burn at the process temperatures.
- the usual protective gases can be used to produce the inert gas atmosphere. It is important in all cases that no oxygen is present.
- the process can be carried out under normal pressure, but also under an increased pressure, for example up to 10 bar.
- Some polyolefins only melt with decomposition even under an inert gas atmosphere.
- the decomposition can start at the melting point. To the extent that the description of the method speaks of a melting point, it means the transition from the solid to the liquid phase, with chemical decomposition being irrelevant. An incipient decomposition of the polyolefin during reflow ⁇ affect adversely the process in any way.
- the halogen-containing waste materials can be mixed in solid and not pretreated form with the melted polyolefin.
- the waste remains solid at the temperature at which the polyolefin is melted.
- the waste materials should be separated to such an extent that the materials to be treated are at least liquid, but preferably gaseous, at the temperature at which the polyolefin is melted.
- metals such as B. housing parts or support structures should be at least roughly separated from the chemical compounds that serve for electrical insulation or flame protection before the start of the process.
- a process variant is particularly well suited, according to which the molten polyolefin is introduced and the gaseous halogen-containing waste material is passed through the liquid polyolefin and is mixed in this way with the polyolefin melt , In this way, a particularly intensive mixture of polyolefin and waste material is achieved, which is why the yields are considerably higher than in other process variants.
- polyethylene and polypropylene are particularly suitable for the process.
- Their melting point is in Range of approx. 200 ° C.
- the process can therefore vary depending on the nature of the
- Waste materials in a temperature range between about 200 ° C, the melting point of the polyolefin, and 500 ° C are carried out. If no waste materials that are difficult to convert are used, a temperature range just above the melting temperature, ie about 50 ° C. to a maximum of 200 ° C. above the melting temperature, is preferred.
- substituted polyolefins can also be used.
- Polyvinyl alcohol is particularly suitable as a substituted polyolefin.
- the thermal treatment of bromine-containing hydrocarbons without the use of a reaction partner leads to the cleavage of the carbon-bromine bond at temperatures above 270 ° C.
- phenyl and bromine radicals are formed.
- the stabilization of phenyl radicals can e.g. B. by radical recombination with another aromatic compound. This pathway leads to biphenyl derivatives, charring and the formation of PBDD and PBDF (Eitan JC Boroj ovich, Zeev Aizenshta t, "Thermal behavior of bromina ted and polybrominated compounds II.
- the reaction can be carried out in a conventional manner.
- the proportions between the halogen-containing waste and the polyolefin to be used can be calculated with knowledge of the halogen content.
- the optimal process temperature can be determined using a few preliminary tests.
- a useful procedure is to continuously melt polyolefin in a reactor through which a gaseous stream of the halogen-containing waste material flows. The hydrogen bromide formed is continuously separated from the remaining waste materials. The remaining waste materials can be recycled.
- a gas chromatography / mass spectrometry study of the pyrolysis products shows that phenol, alkylphenol and hydrogen bromide are the main products. No bromine-containing compounds, especially polybrominated dibenzodioxins and furans, can be detected.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT03783982T ATE489142T1 (de) | 2002-07-31 | 2003-06-18 | Verfahren zur behandlung halogenhaltiger abfallstoffe |
| BR0305685-6A BR0305685A (pt) | 2002-07-31 | 2003-06-18 | Processo para tratamento de materiais de rejeitos contendo halogênio |
| EP03783982A EP1525032B1 (de) | 2002-07-31 | 2003-06-18 | Verfahren zur behandlung halogenhaltiger abfallstoffe |
| AU2003246550A AU2003246550A1 (en) | 2002-07-31 | 2003-06-18 | Method for treating waste materials containing halogen |
| CA002492180A CA2492180A1 (en) | 2002-07-31 | 2003-06-18 | Method for treating waste materials containing halogen |
| DE50313281T DE50313281D1 (de) | 2002-07-31 | 2003-06-18 | Verfahren zur behandlung halogenhaltiger abfallstoffe |
| US11/046,649 US7060242B2 (en) | 2002-07-31 | 2005-01-28 | Method for treating waste materials containing halogen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10234837A DE10234837A1 (de) | 2002-07-31 | 2002-07-31 | Verfahren zur Behandlung halogenhaltiger Abfallstoffe |
| DE10234837.5 | 2002-07-31 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/046,649 Continuation-In-Part US7060242B2 (en) | 2002-07-31 | 2005-01-28 | Method for treating waste materials containing halogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004014491A1 true WO2004014491A1 (de) | 2004-02-19 |
Family
ID=30469245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2003/006425 Ceased WO2004014491A1 (de) | 2002-07-31 | 2003-06-18 | Verfahren zur behandlung halogenhaltiger abfallstoffe |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1525032B1 (de) |
| AT (1) | ATE489142T1 (de) |
| AU (1) | AU2003246550A1 (de) |
| BR (1) | BR0305685A (de) |
| CA (1) | CA2492180A1 (de) |
| DE (2) | DE10234837A1 (de) |
| WO (1) | WO2004014491A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006014457A1 (de) * | 2006-03-29 | 2007-10-04 | Forschungszentrum Karlsruhe Gmbh | Verfahren zur thermischen Dehalogenierung von halogenhaltigen Stoffen |
| DE102019118560A1 (de) * | 2019-07-09 | 2021-01-14 | Karlsruher Institut für Technologie | Pyrolysereaktor und Verfahren zur chemischen Aufbereitung von Kunststoffen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983004259A1 (en) * | 1982-06-02 | 1983-12-08 | The Franklin Institute | Improved method for the solvent extraction of polychlorinated biphenyls |
| BE903383A (fr) * | 1985-10-07 | 1986-04-07 | Desemberg Richard | Procede et composition pour eliminer les polychlorobiphenyles d'appareils electriques et autres |
| US4982027A (en) * | 1986-01-24 | 1991-01-01 | Rheinische Braunkohlenwerke Ag | Process for the reprocessing of carbon containing wastes |
| EP0554761A1 (de) * | 1992-02-04 | 1993-08-11 | MENGES, Georg, Prof. Dr.-Ing. | Verfahren zum Recycling von Polymerwerkstoffen |
| WO1996027412A1 (en) * | 1995-03-07 | 1996-09-12 | Molten Metal Technology, Inc. | Feed processing employing dispersed molten droplets |
| US5688335A (en) * | 1995-09-05 | 1997-11-18 | General Electric Company | Contaminant removal from material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1223802B (it) * | 1988-09-07 | 1990-09-29 | Tecnocolor Sas Di Celebrano A | Sistema di trattamento di solidificazione inertizzazione e stabilizzazione dei rifiuti tossico nocivi mediante inglobamento in resina |
| DE4300860A1 (de) * | 1993-01-15 | 1994-07-21 | Rwe Entsorgung Ag | Verfahren zur Entfernung von Chlor aus synthetischen, organischen Abfällen |
| DE19547259A1 (de) * | 1995-12-06 | 1997-06-12 | Uve Inst Fuer Tech Chemie Und | Verfahren und Anlage zur Herstellung von Kohlenwasserstoffen aus thermoplastischen Altkunststoffen durch hydrierende Spaltung |
| US6030549A (en) * | 1997-08-04 | 2000-02-29 | Brookhaven Science Associates | Dupoly process for treatment of depleted uranium and production of beneficial end products |
-
2002
- 2002-07-31 DE DE10234837A patent/DE10234837A1/de not_active Withdrawn
-
2003
- 2003-06-18 EP EP03783982A patent/EP1525032B1/de not_active Expired - Lifetime
- 2003-06-18 DE DE50313281T patent/DE50313281D1/de not_active Expired - Lifetime
- 2003-06-18 CA CA002492180A patent/CA2492180A1/en not_active Abandoned
- 2003-06-18 WO PCT/EP2003/006425 patent/WO2004014491A1/de not_active Ceased
- 2003-06-18 BR BR0305685-6A patent/BR0305685A/pt not_active IP Right Cessation
- 2003-06-18 AU AU2003246550A patent/AU2003246550A1/en not_active Abandoned
- 2003-06-18 AT AT03783982T patent/ATE489142T1/de active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983004259A1 (en) * | 1982-06-02 | 1983-12-08 | The Franklin Institute | Improved method for the solvent extraction of polychlorinated biphenyls |
| BE903383A (fr) * | 1985-10-07 | 1986-04-07 | Desemberg Richard | Procede et composition pour eliminer les polychlorobiphenyles d'appareils electriques et autres |
| US4982027A (en) * | 1986-01-24 | 1991-01-01 | Rheinische Braunkohlenwerke Ag | Process for the reprocessing of carbon containing wastes |
| EP0554761A1 (de) * | 1992-02-04 | 1993-08-11 | MENGES, Georg, Prof. Dr.-Ing. | Verfahren zum Recycling von Polymerwerkstoffen |
| WO1996027412A1 (en) * | 1995-03-07 | 1996-09-12 | Molten Metal Technology, Inc. | Feed processing employing dispersed molten droplets |
| US5688335A (en) * | 1995-09-05 | 1997-11-18 | General Electric Company | Contaminant removal from material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10234837A1 (de) | 2004-02-19 |
| BR0305685A (pt) | 2004-10-19 |
| AU2003246550A1 (en) | 2004-02-25 |
| EP1525032A1 (de) | 2005-04-27 |
| ATE489142T1 (de) | 2010-12-15 |
| CA2492180A1 (en) | 2004-02-19 |
| DE50313281D1 (de) | 2011-01-05 |
| EP1525032B1 (de) | 2010-11-24 |
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