GB575530A - Improvements in or relating to the production of trichlorethylene - Google Patents

Improvements in or relating to the production of trichlorethylene

Info

Publication number
GB575530A
GB575530A GB5310/44A GB531044A GB575530A GB 575530 A GB575530 A GB 575530A GB 5310/44 A GB5310/44 A GB 5310/44A GB 531044 A GB531044 A GB 531044A GB 575530 A GB575530 A GB 575530A
Authority
GB
United Kingdom
Prior art keywords
tetrachlorethane
trichlorethylene
water
chiefly
porcelain
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
GB5310/44A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB575530A publication Critical patent/GB575530A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons

Abstract

Trichlorethylene is prepared by the pyrolysis of tetrachlorethane, made by the chlorination of acetylene and containing 5 per cent impurities, at a temperature in the range 400-500 DEG C. Perchlorethyele and dichlorethylene are also formed. The hydrogen chloride evolved is adsorbed in water and the liquid products are water washed and separated by fractionation. The apparatus for pyrolysis is made of a corrosion resisting, non-catalytic metal such as iron, steel or nickel, or can be made of carbon, porcelain or similar materials. Cracking is carried out in unpacked coils of tube of small diameter, or in pipes of larger diameter packed with Rashig rings, porcelain or other non-catalytic materials. In the examples: (1) crude tetrachlorethane from the acetylene chlorinator is vaporized at 170-190 DEG C., preheated to 350-370 DEG C. and passed through the reaction chamber maintained at 460-470 DEG C. The liquid product, chiefly trichlorethylene, is condensed and the hydrogen chloride absorbed in water; (2) crude tetrachlorethane is vaporized at 200 DEG C. and passed through a nickel coil maintained at 460 DEG C. The liquid product is chiefly trichlorethylene, but contains some perchlorethylene and tetrachlorethane.
GB5310/44A 1943-03-23 1944-03-22 Improvements in or relating to the production of trichlorethylene Expired GB575530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US575530XA 1943-03-23 1943-03-23

Publications (1)

Publication Number Publication Date
GB575530A true GB575530A (en) 1946-02-21

Family

ID=22011289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5310/44A Expired GB575530A (en) 1943-03-23 1944-03-22 Improvements in or relating to the production of trichlorethylene

Country Status (1)

Country Link
GB (1) GB575530A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682512A (en) * 1948-08-02 1954-06-29 Minnesota Mining & Mfg Unsaturated organosilanes and method of making same
US2859254A (en) * 1955-11-21 1958-11-04 Columbia Southern Chem Corp Dehydrochlorination of tetrachloroethane
DE1090651B (en) * 1955-11-21 1960-10-13 Columbia Southern Chem Corp Process for the production of trichlorethylene

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682512A (en) * 1948-08-02 1954-06-29 Minnesota Mining & Mfg Unsaturated organosilanes and method of making same
US2859254A (en) * 1955-11-21 1958-11-04 Columbia Southern Chem Corp Dehydrochlorination of tetrachloroethane
DE1090651B (en) * 1955-11-21 1960-10-13 Columbia Southern Chem Corp Process for the production of trichlorethylene

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