Abstract:
The present invention relates to an extraction column (1) comprising, at least in sections, a cylindrical, vertically orientated column body (2), said column body forming a hollow column space (3) having a maximum horizontal extension, wherein within the column body (2) are arranged at least one first inlet (4) for an extractant, at least one second inlet (5) for the fluid to be extracted, and at least one outlet (6) for the extractant mixture and at least one outlet for the raffinate. The extraction column (1) according to the invention is characterized in that a vertically oriented dividing device (7) is arranged within the hollow column space (3) that divides the hollow column space (3) into several vertically oriented and horizontally separated areas, wherein the maximum horizontal extent of each area is smaller than the maximum horizontal extent of the hollow column space (3). The invention further relates to a method for extracting a component from a fluid by means of such an extraction column (1).
Abstract:
The invention relates to a method for separating a phase (A) containing at least one ionic liquid from a phase (B), phase (A) being more viscous than phase (B). Said method comprises the following steps: a) providing a stream (S1) containing a dispersion (D1) in which phase (A) is dispersed in phase (B); b) introducing stream (S1) into a coalescing filter (K) made of acrylic phenolic resin; c) separating the dispersed phase (A) from phase (B) in the coalescing filter (K); d) discharging a stream (S2) comprising at least 70 wt.%, preferably at least 90 wt.%, of phase (A) from the coalescing filter (K); and e) discharging a stream (S3) comprising at least 70 wt.%, preferably at least 90 wt.%, of phase (B) from the coalescing filter (K).
Abstract:
The invention relates to a method for separating a phase (A), which contains at least one ionic liquid, from a phase (B), wherein the phase (A) has a higher viscosity than the phase (B), comprising the following steps: a) providing a current (S1) containing a dispersion (D1), in which the phase (A) is dispersed in the phase (B), b) introducing the current (S1) to a coalescing device (KV), wherein the inflow velocity of the current (S1) equals 0.05 to 150 kg/(cm 2 *h) based on the average cross-sectional area of the coalescing device (KV). c) separating the dispersed phase (A) from the phase (B) in the coalescing device (KV), d) channeling out a current (S2) comprising at least 70 wt%, preferably at least 90 wt% of phase (A) from the coalescing device (KV) and e) channeling out a current (S3) comprising at least 70 wt%, preferably at least 90 wt% of phase (B) from the coalescing device (KV).
Abstract:
The invention relates to a method for separating a phase (A) from a phase (B), phase (A) being more viscous than phase (B). In said method, the direction of dispersion, in which phase (B) is dispersed in phase (A), is inversed so that phase (A) is dispersed in phase (B), the inversion being created by recirculating a stream containing an excess of phase (B).
Abstract:
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.
Abstract:
The present invention concerns a process for preparing cyclohexane from methylcyclopentane (MCP) and benzene. In the present invention, MCP and benzene are constituents of a hydrocarbon mixture (KG1) also including dimethylpentanes (DMP), optionally cyclohexane and optionally at least one compound (low boiler) selected from non-cyclic C 5 -C 6 alkanes and cyclopentane. First, benzene is reacted in a hydrogenation step to give cyclohexane (present in the hydrocarbon mixture (KG2)), while MCP is isomerized to cyclohexane in the presence of a catalyst, preferably an acidic ionic liquid. After the hydrogenation but before the isomerization, the dimethylpentanes (DMP) are removed, and initially the cyclohexane present in the hydrocarbon mixture (KG2) is removed together with DMP. This pre-isomerization cyclohexane can be freed of DMP again in a downstream step of rectification and isolated and/or returned to the cyclohexane preparation process. If the hydrocarbon mixture (KG1) comprises low boilers, they can be removed between DMP removal and MCP isomerization. Following the isomerization comes the isolation of the cyclohexane, with optional recycling of unisomerized MCP and any low boilers. The hydrocarbon mixture (KG1) preferably includes cyclohexane and/or low boilers, and so low-boiler removal between DMP removal before isomerization is a preferred operation. Also preferred is an additional removal of DMP from the cyclohexane - that is, the cyclohexane fraction arising from the benzene hydrogenation and possibly forming part of the starting mixture (KG1) is isolated and hence recovered.