Basf Se Corporation

Daniel Pfeiffer

Stefan Bitterlich

Michael Hübner

Marco Bosch

Nicole Holub

Steffen Tschirschwitz

Jochen Bürkle

Joni Joni

Ulrich Hammon

Thomas Daniel

Klaus Joachim Mueller-Engel

Otto Machhammer

Alois Kindler

Stephan Deuerlein

Andrea Haunert

Andreas Bode

Veronika Wloka

Martin Bock

Manfred Heilig

Steffen Oehlenschläger

Markus Schmitt

Roman Prochazka

Albena Kostova

Frank Huetten

Matthias Hinrichs

Lukas Schulz

Pawel Czajka

Andreas Weickgenannt

Markus Ottenbacher

Marta Porta Garcia

Kathrin Wissel-Stoll

Oliver Christian Gobin

Stefanie Herzog

Gauthier Luc Maurice Averlant

Michael Schreiber

Daniela Malkowsky

Katharina Spuhl

Jonathan Walter

Dirk Neumann

Keshav Ruthiya

Steffen OEHLENSCHLÄGER

The present invention relates to a chemical conversion process, preferably an isomerization process, for at least one hydrocarbon in the presence of an ionic liquid. The chemical conversion is performed in a dispersion, with dispersion of the hydrocarbon (phase (B)) in the ionic liquid (phase (A)) in the dispersion, the volume ratio of phase (A) to phase (B) being in the range from 2.5 to 4:1 [vol/vol].

Chemical conversion process in a dispersion

The present invention relates to a process for separating a phase (A) from a phase (B), phase (A) having a higher viscosity than phase (B), by inverting the direction of dispersion from phase (B) in phase (A) to phase (A) in phase (B) by recycling a stream comprising phase (B) in excess.

Phase separation process by inversion of the direction of dispersion

A process for separating a phase (A) comprising at least one ionic liquid from a phase (B), where phase (A) has a higher viscosity than phase (B), comprising: a) providing a stream (S) comprising a dispersion (D) in which phase (A) is dispersed in phase (B), b) introducing stream (S) into a coalescing device (KV), where the inflow rate of stream (S) is from 0.05 to 150 kg/(cm*h) based on the average cross-sectional area of coalescing device (KV), wherein the packing density of coalescing device (KV) is from 50 to 500 kg/m, separating phase (A) from phase (B) in coalescing device (KV), discharging a stream (S) comprising at least 70% by weight of phase (A) from coalescing device (KV) and discharging a stream (S) comprising at least 70% by weight of phase (B) from coalescing device (KV).

Separation of ionic liquids in coalescing devices

The present invention relates to a process for preparing cyclohexane by isomerizing a hydrocarbon mixture (HM) comprising methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. The starting material used is a stream (S) which originates from a steamcracking process. The hydrocarbon mixture (HM) obtained from this stream (S) in an apparatus for aromatics removal has a reduced aromatics content compared to stream (S), and (HM) may optionally also be (virtually) free of aromatics. Depending on the type and amount of the aromatics remaining in the hydrocarbon mixture (HM), especially in the case that benzene is present, the isomerization may additionally be preceded by performance of a hydrogenation of (HM). In addition, depending on the presence of other components of (HM), further purification steps may optionally be performed prior to or after the isomerization or hydrogenation. High-purity (on-spec) cyclohexane is preferably isolated from the hydrocarbon mixture (HM) obtained in the isomerization, the specifications being, for example, those applicable to the use of the cyclohexane for the preparation, known to those skilled in the art, of caprolactam.

Process for preparing cyclohexane with starting materials originating from a steamcracking process

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 C-C-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&#x2014;if low boilers are present in the hydrocarbon mixture (HM1)&#x2014;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.

Process for preparing cyclohexane from benzene and methylcyclopentane with upstream benzene hydrogenation

The present invention relates to an extraction columnhaving a vertically aligned column bodywhich is cylindrical at least in sections and forms a column cavityhaving a horizontal maximum extent, with provision in the column bodyof at least one first feedfor an extractant, at least one second feedfor the fluid to be extracted and at least one outletfor the extract mixture and at least one outlet for the raffinate. In the inventive extraction column, a vertically aligned dividerarranged within the column cavitysubdivides the column cavityinto a plurality of vertically aligned and horizontally divided regions, the horizontal maximum extent of each region being less than the horizontal maximum extent of the column cavity. The invention further relates to a process for extracting a constituent from a fluid by means of such an extraction column

Extraction column and process for extracting a constituent from a fluid

A process for separating water from pyrolysis gasoline obtained from a steam cracking step uses a coalescer for the water separation. And a device comprises a coalescer for water separation from pyrolysis gasoline.

Process for separation of water from pyrolysis gasoline

The present invention relates to a process for separating a phase (A) comprising at least one ionic liquid from a phase (B), phase (A) having a higher viscosity than phase (B), comprising the following steps:

Removal of ionic liquids by means of a knitted fabric

An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation;

Aqueous solution comprising acrylic acid and the conjugate base thereof

Removal of ionic liquids by means of coalescing filters made from acrylic/phenolic resin

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Neustadt, Germany

Daniel Pfeiffer