METHOD FOR PRODUCTION OF OILS AND PARAFFINS Russian patent published in 1994 - IPC

FIELD: petroleum industry. SUBSTANCE: method involves production of oils and paraffin in vertical multiple-section apparatus provided with partitions and overflows. Paraffin-containing feedstock is mixed with cold solvent, filtrate solution or mixture thereof under pulsating effect applied to entire volume of feedstock mixture at a frequency of 30-90min^-1 during reciprocating movement of feedstock mixture in overflows between sections with simultaneous continuous supply of cold solvent into said overflows. EFFECT: higher efficiency. 1 tbl, 2 dwg