EP0295454A2 - Procédé et dispositif pour la destruction orientée (craquage) de polychlorodibenzodioxines et/ou dibenzofuranes polychlorés et pour le traitement non polluant de matières craquées - Google Patents

Procédé et dispositif pour la destruction orientée (craquage) de polychlorodibenzodioxines et/ou dibenzofuranes polychlorés et pour le traitement non polluant de matières craquées Download PDF

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Publication number
EP0295454A2
EP0295454A2 EP88108074A EP88108074A EP0295454A2 EP 0295454 A2 EP0295454 A2 EP 0295454A2 EP 88108074 A EP88108074 A EP 88108074A EP 88108074 A EP88108074 A EP 88108074A EP 0295454 A2 EP0295454 A2 EP 0295454A2
Authority
EP
European Patent Office
Prior art keywords
fluid mixture
substances
fluid
mixture
cracking
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
EP88108074A
Other languages
German (de)
English (en)
Other versions
EP0295454B1 (fr
EP0295454A3 (en
Inventor
Henner Dipl.-Ing. Otromke
Uwe Dipl.-Ing. Theerkorn
Gerd Hedemann
Wolfgang Dr. Rer.Nat. Meiners
Lothar Dipl.-Ing. Hartung
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.)
Dipl-Ing Lothar Hartung Te Kreuztal-Buschhuetten
Original Assignee
Felten and Guilleaume Energietechnik 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
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Application filed by Felten and Guilleaume Energietechnik AG filed Critical Felten and Guilleaume Energietechnik AG
Priority to AT88108074T priority Critical patent/ATE60347T1/de
Publication of EP0295454A2 publication Critical patent/EP0295454A2/fr
Publication of EP0295454A3 publication Critical patent/EP0295454A3/de
Application granted granted Critical
Publication of EP0295454B1 publication Critical patent/EP0295454B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/40Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by heating to effect chemical change, e.g. pyrolysis
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20Organic substances
    • A62D2101/22Organic substances containing halogen
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20Organic substances
    • A62D2101/28Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2203/00Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
    • A62D2203/10Apparatus specially adapted for treating harmful chemical agents; Details thereof

Definitions

  • the invention relates to a method for the targeted decomposition (cracking) of organic-chemical substances in the production and for the environmentally friendly preparation of the cracked substances according to the preamble of claim 1.
  • a further embodiment of the method is specified in claim 2.
  • Devices for carrying out the method are characterized in the subclaims.
  • PCDD Polychlorodibenzodioxins
  • PCDF polychlorinated dibenzofurans
  • PCDD and PCDF arise as trace products in the chemical synthesis of chlorinated hydrocarbons, especially in the synthesis of more chlorinated aromatic hydrocarbons, and can also arise when aromatic chlorinated hydrocarbons are used as intermediates in chemical syntheses.
  • Preferred reaction conditions for the formation of PCDD and PCDF are high temperatures and alkaline medium.
  • PCDD and PCDF can also arise in all types of combustion processes if organic chlorine compounds are present.
  • a well-known example is waste incineration plants. Even when burning wood and fuel, small amounts of PCDD and PCDF must be expected.
  • PCDD and PCDF can today be detected as ubiquitous in nature as predominantly anthropogenic environmental contamination.
  • identification and especially the quantification of this class of substances, which is characterized by a large number of isomers - often referred to simply as "dioxins" by the public - was only possible through modern instrumental analysis.
  • PCDD and PCDf-containing waste The main requirement in the disposal of PCDD and PCDf-containing waste is the removal of this material from the natural cycle. However, the conditions of the applicable laws must be observed.
  • the yardstick for assessing which disposal path to take is the content of PCDD and PCDF in the waste on the one hand, and the level of the disposal facilities on the other.
  • the invention is therefore based on the object of finding a method which makes it possible to carry out an environmentally friendly removal of waste containing PCDD and PCDf and to provide an apparatus for using this method.
  • a further embodiment of the method is specified in claim 2, for which a device is specified in subclaims.
  • the main advantage of the process described in claims 1 and 2 is the treatment of organic chemical substances under defined reductive conditions with a very constant temperature over the entire reaction scheme. This means e.g. created the possibility of eliminating PCDD and PCDF-containing waste in an anaerobic atmosphere. A high reduction potential is built up through a high hydrogen content.
  • the reaction temperature can be kept very precisely at better than +/- 2 ° C for a long period of time.
  • Technical and chemical parameters are selected so that e.g. the formation or destruction of PCDD and PCDF is not only influenced kinetically, but also via the existing reaction partners.
  • the first part of the device is used to generate an anaerobic atmosphere.
  • a fluid mixture of nitrogen, hydrogen and residual gases is processed in a gas cracking plant 1.
  • the fluid mixture prepared in this way is further refined in a fine control stage 2 downstream of the gas gap system 1 with the aid of hydrogen and / or nitrogen, a manipulated variable from a computer-controlled gas analysis system 6 influencing the fine control.
  • the fluid mixture is preheated and enters a fluid bed 3 through gas inlet nozzles 32 below a nozzle plate 31.
  • solid substances in a defined sphere size, here aluminum oxide spheres 34.
  • a container 4 for the organic chemical substances to be treated which are injected into the fluid bed 3 via an injection pump 5 through injection nozzles 33.
  • a fluid mixture that is always processed is guided past the surfaces of the aluminum oxide spheres 34.
  • other elements such as chlorine and possibly existing oxygen are bound by the hydrogen of the fluid mixture.
  • the cracked low molecular weight substances are carried out of the fluid bed 3 according to the flow rate of the fluid mixture and sucked off or blown out.
  • the fluid mixture can also be fed to a piston compressor 11 via a charger 10.
  • the loader has the task of compressing and conveying the fluid mixture from a low initial pressure to a higher final pressure.
  • the piston compressor consists of a cylindrical compression chamber 12 as a working space with a piston reciprocating in a straight line.
  • the organic chemical substances to be treated in liquid form are initially in a container 4, from which they are injected into the piston compressor by means of an injection pump 5.
  • the fluid mixture passes from the charger 10 via inlet valves 14 into the piston compressor 11.
  • the mixture consisting of the fluid mixture and the cracked products leaves the piston compressor 11 via outlet valves 15, previously passing through a catalytic converter 16.
  • the mixture consisting of the fluid mixture and the cracking products is then analyzed in the gas analysis system 6.
  • This system consists of a gas chromatograph and other analysis systems, from which control values are transmitted to fine control level 2.
  • a subsequent one Filtering the mixture consisting of fluid mixture and cracking products in a washing system 7 has the result that the hydrochloric acid contained in the mixture is washed out.
  • a decision is then made as to whether the remainder is washed back to new substances 9 by recycling measures or is fed to a thermal afterburning 8.
  • manipulated variables of the gas analysis system 6 can influence the process sequence in the final stage. 2, the charger is influenced by manipulated variables of the gas analysis system 6.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Emergency Management (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Processing Of Solid Wastes (AREA)
EP19880108074 1987-06-13 1988-05-20 Procédé et dispositif pour la destruction orientée (craquage) de polychlorodibenzodioxines et/ou dibenzofuranes polychlorés et pour le traitement non polluant de matières craquées Expired - Lifetime EP0295454B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88108074T ATE60347T1 (de) 1987-06-13 1988-05-20 Verfahren und vorrichtung zur gezielten zerlegung (cracken) von polychlordibenzodioxinen und/oder polychlorierten dibenzofuranen und zur umweltfreundlichen aufbereitung der gecrackten stoffe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3719824A DE3719824C1 (de) 1987-06-13 1987-06-13 Verfahren und Vorrichtung zur gezielten Zerlegung (Cracken) von Halogenkohlenwasserstoffen mit anschliessender umweltfreundlicher Aufbereitung der gecrackten Stoffe
DE3719824 1987-06-13

Publications (3)

Publication Number Publication Date
EP0295454A2 true EP0295454A2 (fr) 1988-12-21
EP0295454A3 EP0295454A3 (en) 1989-03-15
EP0295454B1 EP0295454B1 (fr) 1991-01-23

Family

ID=6329667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880108074 Expired - Lifetime EP0295454B1 (fr) 1987-06-13 1988-05-20 Procédé et dispositif pour la destruction orientée (craquage) de polychlorodibenzodioxines et/ou dibenzofuranes polychlorés et pour le traitement non polluant de matières craquées

Country Status (4)

Country Link
EP (1) EP0295454B1 (fr)
AT (1) ATE60347T1 (fr)
DE (2) DE3719824C1 (fr)
ES (1) ES2021113B3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2671990A1 (fr) * 1991-01-24 1992-07-31 Chaussonnet Pierre Systeme pour le traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est prejudiciable pour l'environnement.
EP0570645A1 (fr) * 1992-05-20 1993-11-24 Societe Francaise De Thermolyse Système et procédé de traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est préjudiciable pour l'environnement
WO1993023497A1 (fr) * 1992-05-20 1993-11-25 Societe Francaise De Thermolyse Systeme et procede de traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est prejudiciable pour l'environnement
US5730947A (en) * 1991-01-24 1998-03-24 Societe Francaise De Thermolyse System and process for vacuum thermolysis treatment of liquid or gas products the disposal of which is detrimental to the environment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886605A (en) * 1954-10-11 1959-05-12 Dow Chemical Co Method of reducing the halogen content of halohydrocarbons
US3542532A (en) * 1968-01-11 1970-11-24 Exxon Research Engineering Co Process for the production of hydrogen from petroleum coke
US3597327A (en) * 1969-04-02 1971-08-03 Arthur M Squires Process for pyrolyzing a solid or liquid hydrocarbonaceous fuel in a fluidized bed
AU533902B2 (en) * 1979-09-21 1983-12-15 Monsanto Company Oxidants for gasifying carbon - containing materials
CA1260959A (fr) * 1984-05-21 1989-09-26 Sidney W. Benson Conversion de substances toxiques halogenees
DE3616785A1 (de) * 1986-05-17 1987-11-19 Union Rheinische Braunkohlen Verfahren zur aufarbeitung von kohlenstoff enthaltenden abfaellen und biomassen
CA1294111C (fr) * 1986-08-08 1992-01-14 Douglas J. Hallett Procede de destruction de rebuts organiques

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2671990A1 (fr) * 1991-01-24 1992-07-31 Chaussonnet Pierre Systeme pour le traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est prejudiciable pour l'environnement.
US5730947A (en) * 1991-01-24 1998-03-24 Societe Francaise De Thermolyse System and process for vacuum thermolysis treatment of liquid or gas products the disposal of which is detrimental to the environment
EP0570645A1 (fr) * 1992-05-20 1993-11-24 Societe Francaise De Thermolyse Système et procédé de traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est préjudiciable pour l'environnement
WO1993023497A1 (fr) * 1992-05-20 1993-11-25 Societe Francaise De Thermolyse Systeme et procede de traitement par thermolyse sous vide des produits liquides ou gazeux dont le rejet est prejudiciable pour l'environnement

Also Published As

Publication number Publication date
DE3719824C1 (de) 1989-03-09
EP0295454B1 (fr) 1991-01-23
EP0295454A3 (en) 1989-03-15
ES2021113B3 (es) 1991-10-16
ATE60347T1 (de) 1991-02-15
DE3861632D1 (de) 1991-02-28

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