Patent GB-372028-A (GB)
Title: Process for chlorinating organic compounds
IPC: B01J10/00
Filed: 1931-03-16
Abstract: In a process for chlorinating organic compounds in which the p reaction takes place continuously within a rectifying column and the products are rectified during their removal from the reaction zone, the temperature is controlled by the introduction into the reaction zone of a vaporizable liquid, for example a condensate obtained in the process.  The Figure shows an apparatus suitable for the chlorination of butane.  The column 5 contains a reaction zone 12 situated between rectifying zones 11, 13.  Butane is introduced through pipe 21 or 22 and chlorine through pipe 23. The uncondensed vapours leaving the upper zone 13 pass into a condenser 14 where unconverted butane condenses and is fed back at a controllable rate either into the upper part of the column by the pipe 31 or directly into the reaction zone by the pipe 32. Hydrochloric acid is removed from the uncondensed vapours by the absorber 33, and the chlorine is returned to the reaction zone by the pump 37.  The butyl chloride after rectification in the zone 11 descends to the reboiler 7 and is drawn off as required.  <PICT:0372028/III/1> The Specification as open to inspection under Sect. 91 (3) (a) describes broadly the carrying out of chemical reactions in a rectifying column, and mentions many other types of reaction to which the invention is applicable.  The production of sulphuric esters by the action of sulphuric acid on propylene is described in detail, and reference is also made to oxidations, esterifications, saponifications, oxidation of sulphur dioxide, and absorptions with acids.  This subject-matter does not appear in the Specification as accepted.ALSO:Chlorination. -- In a process for chlorinating organic compounds in which the reaction takes place continuously within a rectifying column and the products are rectified during their removal from the reaction zone, the temperature is controlled by the introduction into the reaction zone of a vaporizable liquid, for example a condensate obtained in the process.  The Figure shows an apparatus suitable for the chlorination of butane.  The column 5 contains a reaction zone 12 situated between rectifying zones 11, 13.  Butane is introduced through pipe 21 or 22 and chlorine through pipe 23.  The uncondensed vapours leaving the upper zone 13 pass into a condenser 14 where unconverted butane condenses and is fed back at a controllable rate either into the upper part of the column by the pipe 31 or directly into the reaction zone by the pipe 32.  Hydrochloric <PICT:0372028/IV/1> acid is removed from the uncondensed vapours by the absorber 33, and the chlorine is returned to the reaction zone by the pump 37. The butyl chloride after rectification in the zone 11 descends to the re-boiler 7 and is drawn off as required.  Oxidation; esterification; saponification; sulphonation; nitration; ethereal sulphates; sulphur trioxide; ammonia.  The Specification as open to inspection under Sect. 91 (3) (a) describes broadly the carrying out of chemical reactions in a rectifying column, and mentions many other types of reaction to which the invention is applicable.  The production of sulphuric esters by the action of sulphuric acid on propylene is described in detail, and reference is also made to oxidation, esterification, saponification, sulphonation, nitration, ammonia synthesis, oxidation of sulphur dioxide, and absorption with acids.  This subject-matter does not appear in the Specification as accepted.