ES2127355T3 - Produccion de compuestos fluorocarbonados. - Google Patents

Produccion de compuestos fluorocarbonados.

Info

Publication number
ES2127355T3
ES2127355T3 ES94307579T ES94307579T ES2127355T3 ES 2127355 T3 ES2127355 T3 ES 2127355T3 ES 94307579 T ES94307579 T ES 94307579T ES 94307579 T ES94307579 T ES 94307579T ES 2127355 T3 ES2127355 T3 ES 2127355T3
Authority
ES
Spain
Prior art keywords
fluocarbide
hot gas
compound
refrigeration
carbon
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
ES94307579T
Other languages
English (en)
Inventor
Jacobus Swanepoel
Ruan Lombaard
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.)
Atomic Energy Corp of South Africa Ltd
Original Assignee
Atomic Energy Corp of South Africa Ltd
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 Atomic Energy Corp of South Africa Ltd filed Critical Atomic Energy Corp of South Africa Ltd
Application granted granted Critical
Publication of ES2127355T3 publication Critical patent/ES2127355T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
    • B01J12/002—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor carried out in the plasma state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
    • C07C17/263—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions
    • C07C17/269—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions of only halogenated hydrocarbons
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0894—Processes carried out in the presence of a plasma
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3431—Coaxial cylindrical electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3442—Cathodes with inserted tip
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3468—Vortex generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S422/00—Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
    • Y10S422/906—Plasma or ion generation means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Geometry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Plasma Technology (AREA)

Abstract

EN LA INVENCION SE PRESENTAN UN METODO Y UN EQUIPO PARA LA PRODUCCION DE UN COMPUESTO DE FLUOCARBURO DESEADO QUE CONSISTE EN FORMAR UNA ZONA DE ALTA TEMPERATURA Y ALIMENTAR AL MENOS UN MATERIAL DE ENTRADA EN LA ZONA DE ALTA TEMPERATURA PARA GENERAR UN CUERPO DE GAS CALIENTE QUE INCLUYA ESPECIES QUE CONTENGAN FLUOR Y ESPECIES QUE CONTENGAN CARBONO. LA RELACION MOLAR C:F DEL CUERPO DE GAS CALIENTE SE CONTROLA DE MODO QUE TENGA UN VALOR SELECCIONADO DE ENTRE 0,4 Y 2; Y LA ENTALPIA ESPECIFICA DEL CUERPO DE GAS CALIENTE SE CONTROLA DE MODO QUE SEA DE ENTRE 1KWH/KG APROXIMADAMENTE Y 10KWH/KG APROXIMADAMENTE DURANTE UN INTERVALO DE TIEMPO DE TAL MODO QUE SE FORME UNA MEZCLA GASEOSA TERMICA REACTIVA, QUE CONTENGA ESPECIES REACTIVAS QUE INCLUYAN PRECURSORES REACTIVOS QUE CONTENGAN FLUOR Y PRECURSORES REACTIVOS QUE CONTENGAN CARBONO. A CONTINUACION SE REFRIGERA LA MEZCLA TERMICA REACTIVA A UNA VELOCIDAD DE REFRIGERACION Y A UNA TEMPERATURA DE REFRIGERACION SELECCIONADAS PARA OBTENER UN PRODUCTO FINALQUE INCLUYE EL COMPUESTO DE FLUOCARBURO DESEADO. EL MATERIAL DE ENTRADA ES NORMALMENTE UN COMPUESTO DE CARBONO PERFLUORADO C1-C10 DE LA FORMULA GENERAL CNFM EN LA QUE 0 < N (MENOR O IGUAL) 10 Y M = 2N, 2N + 2, O 2N EMPLO UN FLUOCARBURO GASEOSO TAL COMO TETRAFLUOMETANO (CF4).
ES94307579T 1993-10-14 1994-10-14 Produccion de compuestos fluorocarbonados. Expired - Lifetime ES2127355T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA937644 1993-10-14

Publications (1)

Publication Number Publication Date
ES2127355T3 true ES2127355T3 (es) 1999-04-16

Family

ID=25583316

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94307579T Expired - Lifetime ES2127355T3 (es) 1993-10-14 1994-10-14 Produccion de compuestos fluorocarbonados.

Country Status (13)

Country Link
US (1) US5611896A (es)
EP (1) EP0648530B1 (es)
JP (1) JP3892490B2 (es)
KR (1) KR100370184B1 (es)
CN (1) CN1076723C (es)
AU (1) AU687091B2 (es)
BR (1) BR9404115A (es)
CA (1) CA2118081C (es)
DE (1) DE69416073T2 (es)
ES (1) ES2127355T3 (es)
PL (1) PL305458A1 (es)
RU (1) RU2154624C2 (es)
ZA (1) ZA948100B (es)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1090164C (zh) * 1995-03-31 2002-09-04 纳幕尔杜邦公司 四氟乙烯的制备
AU5378096A (en) * 1995-03-31 1996-10-16 E.I. Du Pont De Nemours And Company Preparation of tetrafluoroethylene
CA2399138C (en) * 2000-02-10 2009-12-01 South African Nuclear Energy Corporation Limited Treatment of fluorocarbon feedstocks
WO2001058584A2 (en) * 2000-02-10 2001-08-16 South African Nuclear Energy Corporation Limited Treatment of fluorocarbon feedstocks
EP1263702B1 (en) * 2000-02-10 2009-08-26 South African Nuclear Energy Corporation Limited Treatment of fluorocarbon feedstocks
FR2825295B1 (fr) * 2001-05-31 2004-05-28 Air Liquide Application des plasmas denses crees a pression atmospherique au traitement d'effluents gazeux
US7622693B2 (en) * 2001-07-16 2009-11-24 Foret Plasma Labs, Llc Plasma whirl reactor apparatus and methods of use
US8764978B2 (en) 2001-07-16 2014-07-01 Foret Plasma Labs, Llc System for treating a substance with wave energy from an electrical arc and a second source
US7857972B2 (en) 2003-09-05 2010-12-28 Foret Plasma Labs, Llc Apparatus for treating liquids with wave energy from an electrical arc
US8981250B2 (en) 2001-07-16 2015-03-17 Foret Plasma Labs, Llc Apparatus for treating a substance with wave energy from plasma and an electrical Arc
US10188119B2 (en) 2001-07-16 2019-01-29 Foret Plasma Labs, Llc Method for treating a substance with wave energy from plasma and an electrical arc
US8734643B2 (en) 2001-07-16 2014-05-27 Foret Plasma Labs, Llc Apparatus for treating a substance with wave energy from an electrical arc and a second source
US7422695B2 (en) 2003-09-05 2008-09-09 Foret Plasma Labs, Llc Treatment of fluids with wave energy from a carbon arc
US8734654B2 (en) 2001-07-16 2014-05-27 Foret Plasma Labs, Llc Method for treating a substance with wave energy from an electrical arc and a second source
CA2385802C (en) * 2002-05-09 2008-09-02 Institut National De La Recherche Scientifique Method and apparatus for producing single-wall carbon nanotubes
US6919015B2 (en) * 2002-12-16 2005-07-19 3M Innovative Properties Company Process for manufacturing fluoroolefins
JP5628472B2 (ja) * 2004-04-19 2014-11-19 エスディーシーマテリアルズ， インコーポレイテッド 気相合成による高スループットの材料発見方法
GB2419132B (en) * 2004-10-04 2011-01-19 C Tech Innovation Ltd Method of production of fluorinated carbon nanostructures
WO2006042109A2 (en) 2004-10-08 2006-04-20 Sdc Materials, Llc An apparatus for and method of sampling and collecting powders flowing in a gas stream
WO2008008104A2 (en) 2006-04-05 2008-01-17 Foret Plasma Labs, Llc System, method and apparatus for treating liquids with wave energy from plasma
WO2008140786A1 (en) * 2007-05-11 2008-11-20 Sdc Materials, Inc. Method and apparatus for making uniform and ultrasmall nanoparticles
US8575059B1 (en) 2007-10-15 2013-11-05 SDCmaterials, Inc. Method and system for forming plug and play metal compound catalysts
USD627900S1 (en) 2008-05-07 2010-11-23 SDCmaterials, Inc. Glove box
US9039916B1 (en) 2009-12-15 2015-05-26 SDCmaterials, Inc. In situ oxide removal, dispersal and drying for copper copper-oxide
US8652992B2 (en) * 2009-12-15 2014-02-18 SDCmaterials, Inc. Pinning and affixing nano-active material
US20110144382A1 (en) * 2009-12-15 2011-06-16 SDCmaterials, Inc. Advanced catalysts for fine chemical and pharmaceutical applications
US8803025B2 (en) 2009-12-15 2014-08-12 SDCmaterials, Inc. Non-plugging D.C. plasma gun
US8557727B2 (en) * 2009-12-15 2013-10-15 SDCmaterials, Inc. Method of forming a catalyst with inhibited mobility of nano-active material
US9149797B2 (en) * 2009-12-15 2015-10-06 SDCmaterials, Inc. Catalyst production method and system
US8470112B1 (en) 2009-12-15 2013-06-25 SDCmaterials, Inc. Workflow for novel composite materials
US8545652B1 (en) 2009-12-15 2013-10-01 SDCmaterials, Inc. Impact resistant material
US9126191B2 (en) 2009-12-15 2015-09-08 SDCmaterials, Inc. Advanced catalysts for automotive applications
GB201010958D0 (en) * 2010-06-30 2010-08-11 3M Innovative Properties Co Process for manufacturing perfluoroolefins by pyrolysis of perfluorocarbons in the presence of hydrogen
US8669202B2 (en) 2011-02-23 2014-03-11 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
JP2014524352A (ja) 2011-08-19 2014-09-22 エスディーシーマテリアルズ， インコーポレイテッド 触媒作用および触媒コンバータに使用するための被覆基材ならびにウォッシュコート組成物で基材を被覆する方法
EP2642831A1 (de) * 2012-03-22 2013-09-25 Hollberg, Manfred Plasma-Elektrode für einen Plasma-Lichtbogenbrenner und Verfahren zur Herstellung
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
CN105143413B (zh) 2012-12-11 2017-07-04 弗雷特等离子实验室公司 高温逆流涡动反应器系统、方法和装置
MX358199B (es) 2013-03-12 2018-08-08 Foret Plasma Labs Llc Método y aparato para la sinterización de agentes de sostén.
WO2015013545A1 (en) 2013-07-25 2015-01-29 SDCmaterials, Inc. Washcoats and coated substrates for catalytic converters
CA2926135A1 (en) 2013-10-22 2015-04-30 SDCmaterials, Inc. Compositions of lean nox trap
JP2016536120A (ja) 2013-10-22 2016-11-24 エスディーシーマテリアルズ， インコーポレイテッド ヘビーデューティディーゼルの燃焼機関のための触媒デザイン
WO2015143225A1 (en) 2014-03-21 2015-09-24 SDCmaterials, Inc. Compositions for passive nox adsorption (pna) systems
EP3002273A1 (en) 2014-10-01 2016-04-06 3M Innovative Properties Company Process and apparatus for producing fluorinated alkenes
EP3401007A4 (en) * 2016-01-05 2019-09-04 Helix Co., Ltd. HYDROFLOW GENERATOR, WATER PLASMA PRODUCTION DEVICE, DECOMPOSITION TREATMENT DEVICE, VEHICLE WITH THE DECOMPOSITION TREATMENT DEVICE AND DECOMPOSITION TREATMENT METHOD
JP6914138B2 (ja) * 2017-07-26 2021-08-04 株式会社Ｓｃｒｅｅｎホールディングス 基板処理方法及び基板処理装置
EP3741736B1 (en) * 2018-01-17 2023-08-02 Resonac Corporation Method for producing tetrafluoromethane
JPWO2022255120A1 (es) * 2021-05-31 2022-12-08
CN117024245B (zh) * 2023-08-07 2024-06-18 浙江大学 一种热等离子体裂解废旧聚四氟乙烯生产四氟甲烷的方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732411A (en) * 1956-01-24 Preparation of tetrafluorgethylene
GB808442A (en) * 1955-06-15 1959-02-04 Du Pont Process of carrying out high temperature reactions by means of a continuous rotating electric arc and apparatus therefor
US2852574A (en) * 1955-06-15 1958-09-16 Du Pont Preparation of tetrafluoroethylene
US2785119A (en) * 1955-07-18 1957-03-12 Gen Electric Transient arc method of preparing fluorocarbons
US2924625A (en) * 1957-11-21 1960-02-09 Du Pont Process for preparing carbon tetrafluoride of high degree of purity from reactants heated in carbon electric arc
US3033767A (en) * 1958-09-02 1962-05-08 Dow Chemical Co Preparation of fluorocarbons
US3081245A (en) * 1960-03-17 1963-03-12 Du Pont Method for the preparation of tetrafluoroethylene
US3147998A (en) * 1962-09-10 1964-09-08 Hamilton Cosco Inc Back rest
GB1278495A (en) * 1969-08-08 1972-06-21 Ian George Sayce Production of flourine or volatile fluorine compounds by melt electrolysis
US3904501A (en) * 1973-10-04 1975-09-09 Massachusetts Inst Technology Fluorine plasma synthesis for carbon monofluorides
US4128589A (en) * 1977-06-22 1978-12-05 Hughes Aircraft Company Generation of CF4 from Teflon for reactive atmosphere processing and growth of metal fluorides
US4973773A (en) * 1988-11-29 1990-11-27 E. I. Du Pont De Nemours And Company Production of tetrafluoroethylene
US5147998A (en) * 1991-05-29 1992-09-15 Noranda Inc. High enthalpy plasma torch
CA2043504C (en) * 1991-05-29 1995-01-17 Peter G. Tsantrizos High enthalpy plasma torch
US5207999A (en) * 1991-08-13 1993-05-04 Cameco Corporation Generation of fluorine via thermal plasma decomposition of metal fluoride

Also Published As

Publication number Publication date
CA2118081A1 (en) 1995-04-15
RU94037594A (ru) 1996-12-10
CN1076723C (zh) 2001-12-26
US5611896A (en) 1997-03-18
KR950011382A (ko) 1995-05-15
AU687091B2 (en) 1998-02-19
AU7581194A (en) 1995-05-04
EP0648530B1 (en) 1999-01-20
ZA948100B (en) 1996-04-15
CA2118081C (en) 2006-10-03
RU2154624C2 (ru) 2000-08-20
KR100370184B1 (ko) 2003-10-17
CN1108638A (zh) 1995-09-20
BR9404115A (pt) 1995-06-27
JP3892490B2 (ja) 2007-03-14
DE69416073D1 (de) 1999-03-04
EP0648530A1 (en) 1995-04-19
JPH07238041A (ja) 1995-09-12
PL305458A1 (en) 1995-04-18
DE69416073T2 (de) 1999-06-24

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