GB904022A - Manufacture of tetrafluoroethylene - Google Patents

Manufacture of tetrafluoroethylene

Info

Publication number
GB904022A
GB904022A GB26106/59A GB2610659A GB904022A GB 904022 A GB904022 A GB 904022A GB 26106/59 A GB26106/59 A GB 26106/59A GB 2610659 A GB2610659 A GB 2610659A GB 904022 A GB904022 A GB 904022A
Authority
GB
United Kingdom
Prior art keywords
steam
reaction zone
tetrafluoroethylene
pyrolysis
reaction
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
Application number
GB26106/59A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB904022A publication Critical patent/GB904022A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • 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
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement
    • B01J2219/00063—Temperature measurement of the reactants
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00083—Coils
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00157—Controlling the temperature by means of a burner
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Tetrafluoroethylene is obtained by the pyrolysis of CHF2Cl in the presence of water vapour. The reaction may be carried out at 650-1400 DEG C. with residence times of 0.005-0.8 second, using a proportion of steam of 15-70% mol based on the reaction mixture. The process may be carried out in a slit-shaped reaction zone as described in Specification 902,682 in the added presence of steam; or in a reaction zone supplied with an oxyhydrogen flame, the heat required for the pyrolysis being derived from the super-heated steam thereby introduced into the reaction zone.
GB26106/59A 1958-07-29 1959-07-29 Manufacture of tetrafluoroethylene Expired GB904022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0026279 1958-07-29

Publications (1)

Publication Number Publication Date
GB904022A true GB904022A (en) 1962-08-22

Family

ID=7091957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26106/59A Expired GB904022A (en) 1958-07-29 1959-07-29 Manufacture of tetrafluoroethylene

Country Status (4)

Country Link
US (1) US2994723A (en)
DE (1) DE1073475B (en)
FR (1) FR1241770A (en)
GB (1) GB904022A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446858A (en) * 1963-03-30 1969-05-27 Daikin Ind Ltd Process for the manufacture of hexafluoropropene
US6924402B2 (en) * 2002-10-23 2005-08-02 Korea Institute Of Science And Technology Simultaneous preparation of tetrafluoroethylene and hexafluoropropylene
WO2013137408A1 (en) * 2012-03-14 2013-09-19 旭硝子株式会社 Production method for 2,3,3,3-tetra-fluoropropene

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL269647A (en) * 1960-09-28
NL288069A (en) * 1962-01-24
GB1041592A (en) * 1962-02-21 1966-09-07 Daikin Ind Ltd Apparatus for the pyrolysis of chlorodifluoromethane
DE1217366B (en) * 1962-09-20 1966-05-26 Societa Edison, Mailand (Italien) Process for the production of tetrafluoroethylene
US3354233A (en) * 1963-10-01 1967-11-21 Allied Chem Production of tetrafluoroethylene
US3489807A (en) * 1968-02-09 1970-01-13 Haruo Shingu Process for the production of fluorinated olefinic compounds
GB8708618D0 (en) * 1987-04-10 1987-05-13 Ici Plc Production process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551573A (en) * 1945-11-30 1951-05-08 Du Pont Pyrolysis of chloro-fluoro alkanes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446858A (en) * 1963-03-30 1969-05-27 Daikin Ind Ltd Process for the manufacture of hexafluoropropene
US6924402B2 (en) * 2002-10-23 2005-08-02 Korea Institute Of Science And Technology Simultaneous preparation of tetrafluoroethylene and hexafluoropropylene
WO2013137408A1 (en) * 2012-03-14 2013-09-19 旭硝子株式会社 Production method for 2,3,3,3-tetra-fluoropropene
CN104169246A (en) * 2012-03-14 2014-11-26 旭硝子株式会社 Production method for 2,3,3,3-tetra-fluoropropene
US9206096B2 (en) 2012-03-14 2015-12-08 Asahi Glass Company, Limited Process for producing 2, 3, 3, 3-tetrafluoropropene
CN104169246B (en) * 2012-03-14 2016-08-24 旭硝子株式会社 The manufacture method of 2,3,3,3-tetrafluoropropene

Also Published As

Publication number Publication date
FR1241770A (en) 1960-09-23
US2994723A (en) 1961-08-01
DE1073475B (en) 1960-01-21

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