METHODS OF PURIFYING HYDROCARBON-CONTAINING WASTES USING MICROPOROUS MATERIALS HAVING FILTRATION AND ADSORPTION PROPERTIES Russian patent published in 2020 - IPC B01D63/14 C02F1/44 

FIELD: petroleum chemistry.

SUBSTANCE: invention relates to methods of cleaning flow of hydrocarbon-containing wastes using microporous materials with filtration and adsorption properties. Method involves passage of a stream of hydrocarbon-containing wastes through a microporous membrane to obtain aqueous permeate and a hydrocarbon-containing retentate. Membrane comprises a hydrophobic polymer matrix and a hydrophilic, finely granular filler in the form of particles distributed over said matrix, and the polymer matrix has pores with an average volume diameter of less than 1.0 micron, and at least 70 % of pores have an average diameter of less than 0.35 micron .Polymer matrix contains a polyolefin, and the finely divided filler in form of particles contains an inorganic filler material selected from a group consisting of silicon dioxide, aluminum oxide, calcium oxide, zinc oxide, magnesium oxide, titanium oxide, zirconium oxide and mixtures thereof.

EFFECT: technical result consists in increase of hydrocarbons production level, as well as elimination of environmental problems.

12 cl, 2 dwg, 7 tbl, 4 ex