PURIFICATION OF LIQUID MIXTURES USING DISTILLATORY-MEMBRANE SEPARATION Russian patent published in 2008 - IPC B01D3/14 B01D53/22 B01D67/00 B01D69/00 C07C7/144 B01D61/00 

FIELD: chemistry.

SUBSTANCE: proposed integrated device comprises a fractional distillation column and one or more devices using selective membranes. The liquid mixture in the form of feed stock of petroleum origin is subjected to fractional distillation in the specified device. Part or all of the fluid extracted from the column, made up of two or more components, which have different boiling points, are distributed on the membrane device for discharge from the flow permeable and impermeable liquid, containing different amounts of at least one of the components of the mixture. Systematic inspection of enthalpy is carried out for maintaining the performance criterion of the membrane for the impermeable liquid medium from 0.5 to 1.5.

EFFECT: simultaneous reconstruction of very clean permeable products of the required impermeable stream and one or more products of distillation of the liquid mixtures containing two components with different boiling points.

20 cl, 3 dwg, 5 tbl, 6 ex