DE857955C - Process for the production of tetrachlorethylene in addition to carbon tetrachloride - Google Patents

Process for the production of tetrachlorethylene in addition to carbon tetrachloride

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Publication number
DE857955C
DE857955C DEB14290A DEB0014290A DE857955C DE 857955 C DE857955 C DE 857955C DE B14290 A DEB14290 A DE B14290A DE B0014290 A DEB0014290 A DE B0014290A DE 857955 C DE857955 C DE 857955C
Authority
DE
Germany
Prior art keywords
tetrachlorethylene
carbon tetrachloride
addition
production
methane
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
DEB14290A
Other languages
German (de)
Inventor
Otto Dr Rommel
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB14290A priority Critical patent/DE857955C/en
Application granted granted Critical
Publication of DE857955C publication Critical patent/DE857955C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
    • 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

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

Description

Verfahren zur Herstellung von Tetrachloräthylen neben Tetrachlorkohlenstoff Es ist bekannt, daß man durch Behandeln von Methan mit mehr als i Mol Chlor im Licht bei Temperaturen bis zu etwa 400° neben Methylchlorid, Methylenchlorid und Chloroform im wesentlichen Tetrachlorkohlenstoff erhält, und daß man Tetrachlorkohlenstoff durch Erhitzen auf Temperaturen zwischen etwa 5oo und iooo° in Tetrachloräthvlen und Chlor spalten kann.Process for the production of tetrachlorethylene in addition to carbon tetrachloride It is known that by treating methane with more than 1 mole of chlorine in the light at temperatures up to about 400 ° in addition to methyl chloride, methylene chloride and chloroform essentially obtained carbon tetrachloride, and that one carbon tetrachloride by heating to temperatures between about 500 and 100 ° in tetrachlorethylene and can split chlorine.

Es wurde nun gefunden, daß man in technisch einfacher Weise Tetrachloräthylen neben Tetrachlorkohlenstoff erhält, wenn man auf Methan bei 150 bis 450', insbesondere bei 250 und 32o°, unter intensiver Bestrahlung mit Licht vom Wellenbereich 300 bis 400 mu Chlor einwirken läßt. Das Mengenverhältnis von Chlor und Methan spielt dabei eine untergeordnete Rolle; man verwendet aber zweckmäßig ein Volumenverhältnis von i Volumen Methan zu 2 bis 5 Volumen Chlor und eine Reaktionszeit von mindestens i Minute.It has now been found that tetrachlorethylene is obtained in a technically simple manner in addition to carbon tetrachloride if methane is allowed to act on methane at 150 to 450 °, in particular at 250 and 320 °, under intensive irradiation with light in the wave range of 300 to 400 mu of chlorine. The proportions of chlorine and methane play a subordinate role; but it is expedient to use a volume ratio of 1 volume of methane to 2 to 5 volumes of chlorine and a reaction time of at least 1 minute.

Geeignete Lichtquellen sind insbesondere Quecksilberdampflampen mit oder ohne fluoreszierenden Belag. Je größer die Intensität des Lichtes ist, bei um so tieferer Temperatur kann man arbeiten. Die günstigsten Temperaturbedingungen und die Mindestreaktionszeit für eine gegebene Lichtquelle lassen sich durch Vorversuche leicht ermitteln, und umgekehrt. Wesentlich ist, daß man eine Erhöhung der Temperatur auf über 45o° vermeidet, gegebenenfalls durch Kühlung, da andernfalls Entflammung unter RuB-bildung erfolgt.Suitable light sources are in particular mercury vapor lamps or without a fluorescent coating. The greater the intensity of the light is at the lower the temperature one can work. The most favorable temperature conditions and the minimum response time for a given light source can be determined by preliminary experiments easily determined, and vice versa. It is essential that you increase the temperature to over 45o °, if necessary by Cooling, otherwise Inflammation takes place with the formation of soot.

Das entstehende Gemisch von Tetrachlorkohlenstoff und Tetrachloräthylen wird in üblicher Weise von Chlorwasserstoff und überschüssigem Chlor befreit und kann als solches, z. B. als Lösungsmittel, verwendet werden. Es läBt sich auch leicht durch fraktionierte Destillation trennen. Beispiel Durch ein mit keramischem Material oder Graphit ausgekleidetes Rohr von 8oo 1 Inhalt, in welches mehrere Quecksilberdampflampen eingebaut sind, leitet man bei 28o° Methan und Chlor im Volumenverhältnis 1 : 3,8 mit einer solchen Geschwindigkeit, daß das Gasgemisch etwa 5 Minuten im Rohr verweilt. Die erhaltenen Reaktionsprodukte werden gekühlt und mit Wasser gewaschen. Man erhält Tetrachloräthylen und Tetrachlorkohlenstoff im Mengenverhältnis von etwa 6o: 40, entsprechend einer Ausbeute von 35 °;o Tetrachloräthylen, bezogen auf angewendetes Methan.The resulting mixture of carbon tetrachloride and tetrachlorethylene is freed from hydrogen chloride and excess chlorine in the usual way and can as such, e.g. B. can be used as a solvent. It can also be easy separate by fractional distillation. Example by one with ceramic material or graphite-lined tube with a capacity of 800 liters, in which several mercury-vapor lamps are installed, methane and chlorine in a volume ratio of 1: 3.8 are passed at 280 ° at such a rate that the gas mixture remains in the tube for about 5 minutes. The reaction products obtained are cooled and washed with water. You get Tetrachlorethylene and carbon tetrachloride in a proportion of about 6o: 40, corresponding to a yield of 35 °; o tetrachlorethylene, based on the applied Methane.

Claims (3)

PATENTA\Sf'RÜ(;IiE: i. Verfahren zur Herstellung von Tetrachloräthylen neben Tetrachlorkohlenstoff, dadurch gekennzeichnet, daB man auf Methan bei i5o bis 45o° unter intensiver Bestrahlung mit Licht vom Wellenbereich 300 bis 400 mu Chlor einwirken läBt. PATENTA \ Sf'RÜ (; IiE: i. Process for the production of tetrachlorethylene in addition to carbon tetrachloride, characterized in that chlorine is allowed to act on methane at 150 to 45o ° under intensive irradiation with light in the wave range 300 to 400 mu. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daB man bei Temperaturen zwischen 25o und 32o° arbeitet. 2. The method according to claim i, characterized in that that one works at temperatures between 25o and 32o °. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daB man Methan und Chlor im Volumenverhältnis 1 : 2 bis 5 anwendet.3. The method according to claim i and 2, characterized in that methane and chlorine are used in a volume ratio of 1 : 2 to 5 applies.
DEB14290A 1951-03-23 1951-03-23 Process for the production of tetrachlorethylene in addition to carbon tetrachloride Expired DE857955C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB14290A DE857955C (en) 1951-03-23 1951-03-23 Process for the production of tetrachlorethylene in addition to carbon tetrachloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB14290A DE857955C (en) 1951-03-23 1951-03-23 Process for the production of tetrachlorethylene in addition to carbon tetrachloride

Publications (1)

Publication Number Publication Date
DE857955C true DE857955C (en) 1952-12-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEB14290A Expired DE857955C (en) 1951-03-23 1951-03-23 Process for the production of tetrachlorethylene in addition to carbon tetrachloride

Country Status (1)

Country Link
DE (1) DE857955C (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013096311A1 (en) * 2011-12-22 2013-06-27 Dow Global Technologies, Llc Process for the production of tetrachloromethane
US8558041B2 (en) 2009-10-09 2013-10-15 Dow Global Technologies, Llc Isothermal multitube reactors and processes incorporating the same
US8581012B2 (en) 2009-10-09 2013-11-12 Dow Global Technologies, Llc Processes for the production of chlorinated and/or fluorinated propenes and higher alkenes
US8581011B2 (en) 2009-10-09 2013-11-12 Dow Global Technologies, Llc Process for the production of chlorinated and/or fluorinated propenes
US8907149B2 (en) 2011-05-31 2014-12-09 Dow Global Technologies Llc Process for the production of chlorinated propenes
US8907148B2 (en) 2011-08-07 2014-12-09 Dow Global Technologies Llc Process for the production of chlorinated propenes
US8927792B2 (en) 2011-06-08 2015-01-06 Dow Agrosciences, Llc Process for the production of chlorinated and/or fluorinated propenes
US9056808B2 (en) 2011-05-31 2015-06-16 Dow Global Technologies, Llc Process for the production of chlorinated propenes
US9067855B2 (en) 2011-11-21 2015-06-30 Dow Global Technologies Llc Process for the production of chlorinated alkanes
US9199899B2 (en) 2011-12-02 2015-12-01 Blue Cube Ip Llc Process for the production of chlorinated alkanes
US9233896B2 (en) 2011-08-07 2016-01-12 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9284239B2 (en) 2011-12-02 2016-03-15 Blue Cube Ip Llc Process for the production of chlorinated alkanes
US9321707B2 (en) 2012-09-20 2016-04-26 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9334205B2 (en) 2011-12-13 2016-05-10 Blue Cube Ip Llc Process for the production of chlorinated propanes and propenes
US9382176B2 (en) 2013-02-27 2016-07-05 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9403741B2 (en) 2013-03-09 2016-08-02 Blue Cube Ip Llc Process for the production of chlorinated alkanes
US9475740B2 (en) 2012-12-19 2016-10-25 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9512049B2 (en) 2011-12-23 2016-12-06 Dow Global Technologies Llc Process for the production of alkenes and/or aromatic compounds
US9512053B2 (en) 2012-12-18 2016-12-06 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9598334B2 (en) 2012-09-20 2017-03-21 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9795941B2 (en) 2012-09-30 2017-10-24 Blue Cube Ip Llc Weir quench and processes incorporating the same
US10065157B2 (en) 2012-10-26 2018-09-04 Blue Cube Ip Llc Mixer and processes incorporating the same

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8933280B2 (en) 2009-10-09 2015-01-13 Dow Global Technologies Llc Processes for the production of hydrofluoroolefins
US8558041B2 (en) 2009-10-09 2013-10-15 Dow Global Technologies, Llc Isothermal multitube reactors and processes incorporating the same
US8581012B2 (en) 2009-10-09 2013-11-12 Dow Global Technologies, Llc Processes for the production of chlorinated and/or fluorinated propenes and higher alkenes
US8581011B2 (en) 2009-10-09 2013-11-12 Dow Global Technologies, Llc Process for the production of chlorinated and/or fluorinated propenes
US8926918B2 (en) 2009-10-09 2015-01-06 Dow Global Technologies Llc Isothermal multitube reactors
US9056808B2 (en) 2011-05-31 2015-06-16 Dow Global Technologies, Llc Process for the production of chlorinated propenes
US8907149B2 (en) 2011-05-31 2014-12-09 Dow Global Technologies Llc Process for the production of chlorinated propenes
US8927792B2 (en) 2011-06-08 2015-01-06 Dow Agrosciences, Llc Process for the production of chlorinated and/or fluorinated propenes
US9475739B2 (en) 2011-08-07 2016-10-25 Blue Cube Ip Llc Process for the production of chlorinated propenes
US8907148B2 (en) 2011-08-07 2014-12-09 Dow Global Technologies Llc Process for the production of chlorinated propenes
US9233896B2 (en) 2011-08-07 2016-01-12 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9067855B2 (en) 2011-11-21 2015-06-30 Dow Global Technologies Llc Process for the production of chlorinated alkanes
US9284239B2 (en) 2011-12-02 2016-03-15 Blue Cube Ip Llc Process for the production of chlorinated alkanes
US9199899B2 (en) 2011-12-02 2015-12-01 Blue Cube Ip Llc Process for the production of chlorinated alkanes
US9334205B2 (en) 2011-12-13 2016-05-10 Blue Cube Ip Llc Process for the production of chlorinated propanes and propenes
US9169177B2 (en) 2011-12-22 2015-10-27 Blue Cube Ip Llc Process for the production of tetrachloromethane
WO2013096311A1 (en) * 2011-12-22 2013-06-27 Dow Global Technologies, Llc Process for the production of tetrachloromethane
CN104011000A (en) * 2011-12-22 2014-08-27 陶氏环球技术有限责任公司 Process For The Production Of Tetrachloromethane
US9512049B2 (en) 2011-12-23 2016-12-06 Dow Global Technologies Llc Process for the production of alkenes and/or aromatic compounds
US9321707B2 (en) 2012-09-20 2016-04-26 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9598334B2 (en) 2012-09-20 2017-03-21 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9795941B2 (en) 2012-09-30 2017-10-24 Blue Cube Ip Llc Weir quench and processes incorporating the same
US10065157B2 (en) 2012-10-26 2018-09-04 Blue Cube Ip Llc Mixer and processes incorporating the same
US9512053B2 (en) 2012-12-18 2016-12-06 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9475740B2 (en) 2012-12-19 2016-10-25 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9382176B2 (en) 2013-02-27 2016-07-05 Blue Cube Ip Llc Process for the production of chlorinated propenes
US9403741B2 (en) 2013-03-09 2016-08-02 Blue Cube Ip Llc Process for the production of chlorinated alkanes

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