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    • 83. 发明公开
    • PROCÉDÉ DE PRÉPARATION DE DISULFURE DE DIMÉTHYLE
    • PROCÉDÉDEPRÉPARATIONDE DISULFURE DEDIMÉTHYLE
    • EP3164382A1
    • 2017-05-10
    • EP15736579.2
    • 2015-06-29
    • Arkema France
    • FREMY, GeorgesBARRE, PatriceRAYMOND, Jean-Michel
    • C07C319/02C07C319/24C07C321/04C07C321/14
    • C07C319/24C01B32/75C07C319/02C07C319/06C07C321/04C07C321/14
    • The present invention relates to a method for preparing dimethyl disulphide, in batches or continuously, preferably continuously, said method including at least the following steps: a) reacting at least one hydrocarbon feedstock in the presence of hydrogen sulphide (H
      2 S) and optionally sulphur (S) such as to form carbon disulphide (CS
      2 ) and hydrogen (H
      2 ); b) reacting said carbon disulphide (CS
      2 ) by hydrogenation in the presence of said hydrogen (H
      2 ) obtained in step a), such as to form methyl mercaptan (CH
      3 SH), hydrogen sulphide(H
      2 S) and optionally hydrogen (H
      2 ); c) optionally, but preferably, recirculating said hydrogen sulphide (H
      2 S) formed in step b) to step a); d) reacting the methyl mercaptan formed in step b) with sulphur such as to form dimethyl disulphide and hydrogen sulphide; e) optionally recirculating the hydrogen sulphide formed during step d) to step a); and f) recovering the dimethyl disulphide.
    • 本发明涉及分批或连续,优选连续地制备二甲基二硫化物的方法,所述方法至少包括以下步骤:a)使至少一种烃原料在硫化氢(H 2 S)和任选的硫( S)以形成二硫化碳(CS2)和氢气(H2); b)通过在步骤a)中获得的所述氢(H 2)存在下氢化所述二硫化碳(CS 2),例如形成甲硫醇(CH 3 SH),硫化氢(H 2 S)和任选氢(H 2); c)任选但优选地,将步骤b)中形成的所述硫化氢(H 2 S)再循环至步骤a); d)使步骤b)中形成的甲硫醇与硫反应以形成二甲基二硫化物和硫化氢; e)任选将步骤d)中形成的硫化氢再循环至步骤a); 和f)回收二甲基二硫化物。