公开(公告)号：US20170121240A1

公开(公告)日：2017-05-04

申请号：US15305111

申请日：2015-04-20

Applicant: BASF SE

Inventor： Michael HÜBNER ,  Lukas SCHULZ ,  Pawel CZAJKA ,  Oliver Christian GOBIN ,  Nicole HOLUB ,  Daniel PFEIFFER ,  Andreas WEICKGENANNT ,  Marta PORTA GARCIA

IPC: C07C5/03 ,  C07C7/04 ,  C07C5/31

CPC classification number: C07C5/03 ,  C07C5/10 ,  C07C5/29 ,  C07C5/31 ,  C07C7/04 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2523/46 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/755 ,  C07C2527/08 ,  C07C2527/11 ,  C07C2527/1213 ,  C07C2527/126 ,  C07C2527/135 ,  C07C2531/02 ,  C07C2601/14 ,  C07C13/18

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 possibly 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 (that present in the hydrocarbon mixture (HM2)), while MCP is isomerized in the presence of a catalyst, preferably of an acidic ionic liquid, to cyclohexane. After the hydrogenation but prior to the isomerization the dimethylpentanes (DMP) are removed, with initial removal of the cyclohexane present in the hydrocarbon mixture (HM2) together with DMP. This cyclohexane already present prior to the isomerization can be separated again from DMP in a downstream rectification step and isolated and/or recycled into the process for cyclohexane preparation. Between the DMP removal and MCP isomerization—if low boilers are present in the hydrocarbon mixture (HM1)—low boilers are, optionally removed. After the isomerization, the cyclohexane is isolated, optionally with return of unisomerized MCP and optionally of low boilers. Preferably, cyclohexane and/or low boilers are present in the hydrocarbon mixture (HM1), and so a low boiler removal is preferably conducted between the DMP removal from isomerization. It is additionally preferable that the removal of the cyclohexane from DMP is additionally conducted, meaning that the cyclohexane component which arises in the benzene hydrogenation and may be present in the starting mixture (HM1) is isolated and hence recovered.

公开(公告)号：US20170157537A1

公开(公告)日：2017-06-08

申请号：US15039084

申请日：2014-12-01

Applicant: BASF SE

Inventor： Daniel PFEIFFER ,  Stefan BITTERLICH ,  Michael HÜBNER

IPC: B01D17/04 ,  C07C7/00

CPC classification number: B01D17/045 ,  B01D17/08 ,  B01D17/10 ,  C07C7/005

Abstract: The present invention relates to a process for separating a phase (A) comprising at least one ionic liquid from a phase (B), where the phase (A) has a higher viscosity than the phase (B), which comprises the following steps: a) provision of a stream (S1) comprising a dispersion (D1) in which the phase (A) is dispersed in the phase (B), b) introduction of the stream (S1) into a coalescing device (KV), where the inflow rate of the stream (S1) is from 0.05 to 150 kg/(cm2*h) based on the average cross-sectional area of the coalescing device (KV), c) separation of the disperse phase (A) from the phase (B) in the coalescing device (KV), d) discharge of a stream (S2) comprising at least 70% by weight, preferably at least 90% by weight, of phase (A) from the coalescing device (KV) and e) discharge of a stream (S3) comprising at least 70% by weight, preferably at least 90% by weight, of phase (B) from the coalescing device (KV).