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    • 2. 发明申请
    • PRODUCTION METHOD OF ETHYLENE LOW POLYMER
    • 乙烯低聚物的生产方法
    • US20100036185A1
    • 2010-02-11
    • US12519778
    • 2007-10-25
    • Kazuyuki YokoyamaHiroki Emoto
    • Kazuyuki YokoyamaHiroki Emoto
    • C07C2/08
    • C07C2/32B01D1/225B01D3/143B01D3/148C07C7/04C07C2531/14C07C2531/22C08F10/00C08F110/02C08F210/16Y02P20/52C07C11/107C07C11/02C08F4/69C08F2500/02C08F210/14
    • The object of the present invention is to provide a method of recovering decene under the condition that a decomposition product of a chromium series catalyst and the like is difficult to form from a high boiler from which an ethylene low polymer has been separated, in a production method of an ethylene low polymer using a chromium series catalyst. The present invention relates to that an ethylene low polymer and a high boiler containing a chromium series catalyst, decene, tetradecene and a by-produced polymer are separated by evaporation operation from a reaction liquid containing an ethylene low polymer obtained by low polymerization reaction using a chromium series catalyst, and the high boiler is concentrated such that the tetradecene concentration is 5% by weight or more by an evaporative separator 70 and a liquid storage tank 80, and additionally, decene is evaporated and separated so as to satisfy the following general expression (1) wherein T is temperature (° C.) of a residual solution, and θ is residence time (min.) of a residual solution. [Exp. 1] θ/1.2EXP(850/T)≦1  (1)
    • 本发明的目的是提供一种回收癸烯的方法,该方法是在生产乙烯低聚合物的高锅炉难以形成铬系催化剂等的分解产物的条件下 使用铬系催化剂的乙烯低聚物的方法。 本发明涉及通过蒸发操作将乙烯低聚物和含有铬系催化剂,癸烯,十四碳烯和副产物聚合物的高锅炉从包含通过低聚合反应获得的乙烯低聚物的反应液体分离,使用 铬系催化剂,并且通过蒸发分离器70和液体储罐80将高沸点物浓缩至十四碳烯浓度为5重量%以上,此外,将癸烯蒸发分离,以满足以下通式 (1)其中T是残留溶液的温度(℃),θ是残留溶液的停留时间(min)。 [Exp。 1] theta / 1.2EXP(850 / T)