METHOD OF RECYCLING WASTES FROM CATALYTIC EPOXIDATION OF OLEFINS Russian patent published in 2010 - IPC C07D301/19 B01J38/68 C02F1/26 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of recycling wastes from catalytic epoxidation of olefins using organic hydroperoxides, which involves extraction and treatment of the heavy epoxidate fraction with an alkali solution and treatment of the resultant spent alkaline stream with an extractant. The invention proposes addition of a ligand which forms a molybdenum organometallic complex to the spent alkaline stream and extraction from the spent alkaline stream of a fraction containing propylene glycol, acetophenone, ethylbenzene, phenol, methyl phenyl carbinol and the molybdenum organometallic complex formed, treatment with an extractant at T≥T_cr and P≥P_cr with subsequent splitting of the extract into fractions through stepped reduction of pressure from P_extr to P<P_cr with number of pressure reduction steps equal to the number of fractions of the components which should be obtained, taking into account the molybdenum organometallic complex, where T_cr, P_cr are critical temperature and pressure values of the extractant and P_extr is extraction pressure.

EFFECT: maintaining high degree of extracting molybdenum from the spent alkaline stream regardless of its composition and possibility of extracting fractions of components contained in the spent alkaline stream.

1 dwg, 3 tbl, 8 ex