FIELD: technological processes.
SUBSTANCE: invention relates to an improved method of removing ionic liquid from a process stream, comprising steps of: introducing a process stream into a coalescent device for forming a stream of ionic liquid and a first treated process stream having an ionic liquid concentration which is less than the concentration thereof in the process stream; and introducing the first treated process stream into a separation device to form a second treated process stream, wherein the second treated process stream has an ionic liquid concentration less than its concentration in the first treated process stream, wherein said separating device is selected from a sand filter, an electrostatic separation zone or a combination thereof, wherein the ionic liquid concentration in the second treated process stream is less than 40 pts. wt./mln.
EFFECT: disclosed is an ion-liquid catalyst processing system.
6 cl, 2 ex, 1 dwg
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