EP0635283A1 - Procédé pour la déshalogénation réductive des matériaux solides et liquides contenant des composés organiques halogénés - Google Patents

Procédé pour la déshalogénation réductive des matériaux solides et liquides contenant des composés organiques halogénés Download PDF

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Publication number
EP0635283A1
EP0635283A1 EP94250184A EP94250184A EP0635283A1 EP 0635283 A1 EP0635283 A1 EP 0635283A1 EP 94250184 A EP94250184 A EP 94250184A EP 94250184 A EP94250184 A EP 94250184A EP 0635283 A1 EP0635283 A1 EP 0635283A1
Authority
EP
European Patent Office
Prior art keywords
sodium
solid
ammonia
minutes
carried out
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
EP94250184A
Other languages
German (de)
English (en)
Other versions
EP0635283B1 (fr
Inventor
Frank-Dieter Kopinke
Matthias Remmler
Ulrich Stottmeister
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.)
Helmholtz Zentrum fuer Umweltforschung GmbH UFZ
Original Assignee
Helmholtz Zentrum fuer Umweltforschung GmbH UFZ
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=6493654&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0635283(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Helmholtz Zentrum fuer Umweltforschung GmbH UFZ filed Critical Helmholtz Zentrum fuer Umweltforschung GmbH UFZ
Publication of EP0635283A1 publication Critical patent/EP0635283A1/fr
Application granted granted Critical
Publication of EP0635283B1 publication Critical patent/EP0635283B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/37—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by reduction, e.g. hydrogenation
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/34—Dehalogenation using reactive chemical agents able to degrade
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/22—Organic substances containing halogen
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2203/00—Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
    • A62D2203/04—Combined processes involving two or more non-distinct steps covered by groups A62D3/10 - A62D3/40

Definitions

  • the invention relates to a chemical process for the dehalogenation of halogenated hydrocarbons which are contained in mixtures of solid or liquid substances.
  • Waste or by-products of industrial processes which contain organically bound halogens (fluorine, chlorine, bromine, iodine as organohalogens or halogenated hydrocarbons) represent a considerable risk potential because of their ecotoxic properties. Numerous processes are known for their destruction and z. T. technically tested (see G. Dehoust, Ch. Ewen, R. Gensicke: waste factory, shown using the example of the disposal of organic halogen waste, waste and refuse 1991 (5), 283-294).
  • Lissel and Fründ provide a current overview of available non-thermal processes ⁇ M. Lissel, M. Fründ, Labor 2000, 1991, 205 - 208Ü. After the Degussa sodium process DE-PS 28 13 200 C2 (1978), US Pat. 4 255 252 (1979) Sodium as a suspension (average 20 particle diameter below 100 ⁇ m, preferably below 30 ⁇ m) in oil at elevated temperatures (90-160 ° C) reacted with pretreated waste oils.
  • An advantage of this sodium process is its selectivity. In contrast to oxidative degradation and catalytic hydrogenation, hydrocarbons are not affected. Because of its high reactivity, sodium can cause complete dehalogenation even at low temperatures and short reaction times, provided that there is no transport limitation in the reaction medium.
  • the technical implementation of the sodium process requires a comparatively low investment and is therefore particularly suitable for smaller, possibly mobile systems.
  • An obvious disadvantage of using metal suspensions is that solid products cannot be easily treated with them because solid-solid reactions have a high inhibition of transport. It is precisely this application which is of interest for the treatment of solids such as loaded activated carbons and cokes, filter dusts and others in which there are low concentrations of more or less bound hydrogen halides on a solid matrix.
  • the invention solves the problem of making halogenated hydrocarbons, which are sorbed on solid matrices, available for direct dehalogenation with sodium without the need for an additional extraction step.
  • the contaminated solid is arranged in a fixed bed and a sodium solution in ammonia flows through it.
  • the treatment can be carried out at temperatures near the boiling point of ammonia under atmospheric pressure or at temperatures near ambient temperature under elevated pressure or under conditions between these corner points.
  • solvent ammonia can either be removed as a liquid phase from the purified solid or evaporated directly.
  • the evaporation is achieved depending on the reaction conditions by heating and / or relaxing. In any case, the ammonia is circulated.
  • Reaction temperatures above 30 ° C only make sense if this is to cause additional effects on the solid matrix (e.g. extraction of further pollutants).
  • the processing of the reaction products depends on the chosen embodiment and the waste product to be cleaned. It contains the following steps, which can be combined in different ways: (i) decomposition of excess sodium by adding water or other reagents with active hydrogen (e.g. methanol, acetic acid, dilute mineral acids or the like); (ii) evaporation of the solvent by heating or decompression, the evaporated ammonia being recycled after liquefaction; (iii) washing and neutralizing the cleaned solid or wash water, if necessary.
  • active hydrogen e.g. methanol, acetic acid, dilute mineral acids or the like

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)
EP94250184A 1993-07-24 1994-07-20 Procédé pour la déshalogénation réductive des matériaux solides contenant des composés organiques halogénés Revoked EP0635283B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4324931A DE4324931A1 (de) 1993-07-24 1993-07-24 Verfahren zur reduktiven Dehalogenierung von organohalogenhaltigen festen und flüssigen Stoffen
DE4324931 1993-07-24

Publications (2)

Publication Number Publication Date
EP0635283A1 true EP0635283A1 (fr) 1995-01-25
EP0635283B1 EP0635283B1 (fr) 1999-01-20

Family

ID=6493654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250184A Revoked EP0635283B1 (fr) 1993-07-24 1994-07-20 Procédé pour la déshalogénation réductive des matériaux solides contenant des composés organiques halogénés

Country Status (3)

Country Link
EP (1) EP0635283B1 (fr)
AT (1) ATE175882T1 (fr)
DE (2) DE4324931A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0880378A4 (fr) * 1995-11-07 1999-03-24 Commodore Applied Technologies Procede et equipement de destruction d'agents de guerre chimique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003230638A (ja) * 2002-02-07 2003-08-19 Toshiba Corp 有害有機塩素化合物の無害化処理システムおよび無害化処理された生成物と廃棄物のリサイクル方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017143A (en) * 1978-03-25 1979-10-03 Degussa Process for regenerating spent lubricating oils
EP0288408A1 (fr) * 1987-03-30 1988-10-26 A.L. Sandpiper Corporation Procédé pour la décontimination de substrats pollués
US4910353A (en) * 1983-02-07 1990-03-20 Transformer Service, Inc. Dehalogenation of polychlorinated biphenyls and other related compounds

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2249679C3 (de) * 1972-10-11 1980-09-11 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von 9cis Tricosen, Muscalure
CH668709A5 (de) * 1985-12-06 1989-01-31 Ciba Geigy Ag Verfahren zur enthalogenierung von polyhalogenierten aliphatischen und aromatischen verbindungen.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017143A (en) * 1978-03-25 1979-10-03 Degussa Process for regenerating spent lubricating oils
US4910353A (en) * 1983-02-07 1990-03-20 Transformer Service, Inc. Dehalogenation of polychlorinated biphenyls and other related compounds
EP0288408A1 (fr) * 1987-03-30 1988-10-26 A.L. Sandpiper Corporation Procédé pour la décontimination de substrats pollués

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 76, no. 13, 27 March 1972, Columbus, Ohio, US; abstract no. 69170s, M.V.KENNEDY ET AL: "Chemical and Thermal Aspects of Pesticide Disposal" page 115; column 2; *
CHEMICAL ABSTRACTS, vol. 83, no. 14, 6 October 1975, Columbus, Ohio, US; abstract no. 125874h, E.S.LAHANIATAS ET AL: "Ecological chemistry. XCIV. Analysis and photochemistry of high-boiling polychlorinated paraffin mixtures" page 805; column 1; *
J.DE LANNOY ET AL: "Sodium-Ammonia Reductions in N-Heteroaromatic Chemistry.", BULLETIN DES SOCIETES CHIMIQUES BELGES, vol. 79, 1970, OXFORD GB, pages 329 - 336 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0880378A4 (fr) * 1995-11-07 1999-03-24 Commodore Applied Technologies Procede et equipement de destruction d'agents de guerre chimique
US5998691A (en) * 1995-11-07 1999-12-07 Commodore Applied Technologies, Inc. Method and apparatus to destroy chemical warfare agents

Also Published As

Publication number Publication date
ATE175882T1 (de) 1999-02-15
DE59407681D1 (de) 1999-03-04
DE4324931A1 (de) 1995-01-26
EP0635283B1 (fr) 1999-01-20

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