EP0442088B1 - Procédé de l'oxidation de composés organiques/insolubles dans l'eau - Google Patents

Procédé de l'oxidation de composés organiques/insolubles dans l'eau Download PDF

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Publication number
EP0442088B1
EP0442088B1 EP90124224A EP90124224A EP0442088B1 EP 0442088 B1 EP0442088 B1 EP 0442088B1 EP 90124224 A EP90124224 A EP 90124224A EP 90124224 A EP90124224 A EP 90124224A EP 0442088 B1 EP0442088 B1 EP 0442088B1
Authority
EP
European Patent Office
Prior art keywords
bar
chlorinated
oxidised
phase
autoclave
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.)
Expired - Lifetime
Application number
EP90124224A
Other languages
German (de)
English (en)
Other versions
EP0442088A1 (fr
Inventor
Hans-Helmut Dr. Schwarz
Friedhelm Sahlmen
Otto Dr. Immel
Hanno Dr. Henkel
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of EP0442088A1 publication Critical patent/EP0442088A1/fr
Application granted granted Critical
Publication of EP0442088B1 publication Critical patent/EP0442088B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A62D3/38—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by oxidation; by combustion
    • 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
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen

Definitions

  • the invention relates to a process for breaking down water-insoluble chlorinated hydrocarbons according to claim 1.
  • Radiolytic destruction (Singh, A, et al .: Radiat. Phys. Chem. 24 (1985) 11) and decomposition in supercritical water (Freeman, HM and Oletsey, RA: J. Air Pollut. Control Assoc. 36 (1986) 11, 1, p. 67) are also processes that require a very high technical outlay.
  • water-insoluble chlorinated hydrocarbons can be largely degraded if these compounds are mixed with nitric acid and heated to temperatures of 150 ° C. to 350 ° C. at pressures from 6 bar to 350 bar.
  • Is preferably carried out at a temperature between 250 and 310 ° C. Degradation of the substances can then be achieved in a short reaction time, and the pressure required to maintain a liquid phase should not be unnecessarily high.
  • the minimum operating pressure is preferably approximately 30 bar and at a temperature of 320 ° C 100 bar.
  • the concentration of the nitric acid used for the oxidation can vary within wide limits. A 20 to 70% acid is preferably used. However, the use of more concentrated acid is also possible.
  • the reaction time depends on the temperature, the nitric acid concentration and the mixing of the Components. Of particular importance is the observation that even when the autoclave tests are not mixed, the organic substance decomposes with nitric acid, even if it proceeds more slowly than with intensive stirring.
  • the process according to the invention can be carried out either continuously or batchwise.

Claims (4)

  1. Procédé pour la dégradation d'hydrocarbures chlorés insolubles dans l'eau, les hydrocarbures étant oxydés par de l'acide nitrique à des températures allant de 150°C à 350°C et sous des pressions allant de 6 bar à 350 bar.
  2. Procédé selon la revendication 1, dans lequel on opère avec un excès de 2 g à 40 g d'acide nitrique, de préférence 2,5 g à 7 g par gramme de substance organique.
  3. Procédé selon les revendications 1 et 2, dans lequel l'oxydation est mise en oeuvre dans un autoclave sous des pressions comprises entre 30 bar et 100 bar.
  4. Procédé selon les revendications 1 à 3, dans lequel on oxyde des dibenzodioxines chlorées et des dibenzofurannes chlorés étant oxydés.
EP90124224A 1990-01-23 1990-12-14 Procédé de l'oxidation de composés organiques/insolubles dans l'eau Expired - Lifetime EP0442088B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001782A DE4001782A1 (de) 1990-01-23 1990-01-23 Verfahren zur oxidation wasserunloeslicher organischer verbindungen
DE4001782 1990-01-23

Publications (2)

Publication Number Publication Date
EP0442088A1 EP0442088A1 (fr) 1991-08-21
EP0442088B1 true EP0442088B1 (fr) 1993-04-21

Family

ID=6398544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124224A Expired - Lifetime EP0442088B1 (fr) 1990-01-23 1990-12-14 Procédé de l'oxidation de composés organiques/insolubles dans l'eau

Country Status (6)

Country Link
US (1) US5174985A (fr)
EP (1) EP0442088B1 (fr)
AT (1) ATE88368T1 (fr)
DE (2) DE4001782A1 (fr)
DK (1) DK0442088T3 (fr)
ES (1) ES2055284T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4107972A1 (de) * 1991-03-13 1992-09-17 Basf Ag Verfahren zum abbau von aromatischen nitroverbindungen enthaltenden abwaessern
US5799257A (en) * 1992-10-27 1998-08-25 Lockheed Martin Idaho Technologies Company Process for gamma ray induced degradation of polychlorinated biphenyls
US5454844A (en) * 1993-10-29 1995-10-03 Minnesota Mining And Manufacturing Company Abrasive article, a process of making same, and a method of using same to finish a workpiece surface
US6973678B2 (en) 2002-03-13 2005-12-13 Jones Timothy B Easily assembled specimen container

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793225A (fr) * 1971-12-22 1973-06-22 Stamicarbon Procede de traitement des eaux residuaires
NO762638L (no) * 1975-09-15 1977-03-22 Continental Oil Co Fremgangsm}te ved spaltning av halogenerte organiske forbindelser.
US4080168A (en) * 1976-02-18 1978-03-21 The Curators Of The University Of Missouri Method and apparatus for the wet digestion of organic and biological samples
US4497782A (en) * 1982-10-28 1985-02-05 S. Garry Howell Method for destroying toxic organic chemical products
US5019175A (en) * 1989-05-11 1991-05-28 The United States Of America As Represented By The Administrator, Environmental Protection Agency Method for the destruction of halogenated organic compounds in a contaminated medium
US4995916A (en) * 1990-04-30 1991-02-26 The United States Of America As Represented By The United States Department Of Energy Method of recovering hazardous waste from phenolic resin filters

Also Published As

Publication number Publication date
ATE88368T1 (de) 1993-05-15
DE4001782A1 (de) 1991-07-25
DK0442088T3 (da) 1993-05-17
DE59001261D1 (de) 1993-05-27
ES2055284T3 (es) 1994-08-16
US5174985A (en) 1992-12-29
EP0442088A1 (fr) 1991-08-21

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