公开(公告)号：US20140114100A1

公开(公告)日：2014-04-24

申请号：US14053647

申请日：2013-10-15

Applicant: BASF SE

Inventor： Steffen Tschirschwitz ,  Nicole Holub ,  Jochen Burkle ,  Oliver Christian Gobin ,  Markus Schmitt ,  Martin Bock ,  Aisha Ahmad Naddaf ,  Katharina SpuhI ,  Stefan Bitterlich ,  Daniel Pfeiffer

IPC: C07C5/29

CPC classification number: C07C5/29 ,  C07C5/10 ,  C07C7/163 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2523/46 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/755 ,  C07C2527/06 ,  C07C2527/11 ,  C07C2527/1206 ,  C07C2527/1213 ,  C07C2527/126 ,  C07C2527/135 ,  C07C2601/14 ,  C07C13/18 ,  C07C13/10

Abstract: The present invention relates to a process for preparing cyclohexane from methylcyclopentane (MCP) and benzene. In the context of the present invention, MCP and benzene are constituents of a hydrocarbon mixture (HM1) additionally comprising dimethylpentanes (DMP), possibly cyclohexane and at least one compound (low boiler) selected from acyclic C5-C6-alkanes and cyclopentane. First of all, benzene is converted in a hydrogenation step to cyclohexane, while MCP is isomerized in the presence of a catalyst, preferably of an acidic ionic liquid, to cyclohexane. The hydrogenation is preceded by a prior removal of the dimethylpentanes (DMP), with initial removal of any cyclohexane present in the hydrocarbon mixture (HM1) together with DMP. This cyclohexane already present can be separated again from DMP in a downstream rectification step and recycled into the process for cyclohexane preparation. Between hydrogenation and isomerization, low boilers are removed and, after the isomerization, the cyclohexane is isolated with return of unisomerized MCP and optionally of low boilers.

Abstract translation: 本发明涉及从甲基环戊烷（MCP）和苯制备环己烷的方法。 在本发明的上下文中，MCP和苯是另外包含二甲基戊烷（DMP），可能的环己烷和至少一种选自无环C5-C6烷烃和环戊烷的化合物（低沸点）的烃混合物（HM1）的组分。 首先，将苯在氢化步骤中转化为环己烷，而MCP在催化剂，优选酸性离子液体存在下异构化为环己烷。 之前先氢化二甲基戊烷（DMP），然后与DMP一起初始除去烃混合物（HM1）中存在的任何环己烷。 已经存在的环己烷可以在下游精馏步骤中再次从DMP分离并再循环到环己烷制备方法中。 在氢化和异构化之间，除去低锅炉，在异构化之后，环己烷被分离出来，分离出未异构化的MCP和任选的低锅炉。