Phase separation process by inversion of the direction of dispersion
AssigneeBASF SE
InventorsDaniel Pfeiffer, Stefan Bitterlich
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A process for separating a phase (A) from a phase (B), phase (A) having a higher viscosity than phase (B), wherein phase (A) comprises at least one ionic liquid and phase (B) comprises at least one hydrocarbon, comprising the following steps:
- a) providing a stream (S1) comprising a dispersion (D1) in which phase (B) is dispersed in phase (A),
- b) introducing a stream (S2) comprising at least 70% by weight of phase (B), into stream (S1), stream (S2) being recycled from step f),
- c) to form a stream (S3) comprising a dispersion (D2) in which phase (A) is dispersed in phase (B),
- d) introducing stream (S3) into a phase separator,
- e) separating stream (S3) in the phase separator into a stream (S5) comprising at least 70% by weight of phase (B), and into a stream (S4) comprising at least 70% by weight of phase (A),
- f) removing a portion of stream (S5) as stream (S2) and recycling stream (S2) to step b).
A process for separating a phase (A) from a phase (B), phase (A) having a higher viscosity than phase (B), wherein phase (A) comprises at least one ionic liquid and phase (B) comprises at least one hydrocarbon, comprising the following steps:
- a) providing a stream (S1) comprising a dispersion (D1) in which phase (B) is dispersed in phase (A),
- b) introducing a stream (S2) comprising at least 70% by weight of phase (B), into stream (S1), stream (S2) being recycled from step f),
- c) to form a stream (S3) comprising a dispersion (D2) in which phase (A) is dispersed in phase (B),
- d) introducing stream (S3) into a horizontal, glass phase separator, which is operated in flooded mode resulting,
- e) separating stream (S3) in the phase separator based on viscosity difference in the phases into a stream (S5) comprising at least 70% by weight of phase (B), and into a stream (S4) comprising at least 70% by weight of phase (A),
- f) removing a portion of stream (S5) as stream (S2) and recycling stream (S2) to step b).
Dependencies are inferred from the claim text.