METHOD FOR TREATMENT AND UTILIZATION OF LIGHT PYROLYSIS RESIN Russian patent published in 2006 - IPC C10G7/00 C07C7/04 

FIELD: petroleum processing and petroleum chemistry, chemical technology.

SUBSTANCE: method involves separating resin for four fractions and mixing three fractions between them The rectifying stage is carried out for three steps resulting to preparing a single ready product and three intermediate fractions: at the first step vat residue of fraction 140-220°C is isolated from the resin; at the second step the light fraction 35-75°C as distillate is isolated from the remained part; at the third step the remained part is separated for the residual fraction 85-140°C and the benzene fraction 75-85°C as the ready product. At the mixing stage two types of solvent are prepared: heavy type by mixing fractions 35-75°C and 140-220°C in the ratio = 1:(1-1.5), and light type by mixing fractions 35-75°C and 85-140°C in the ratio = 1:(1-1.5). Invention provides expanding the assortment of preparing products.

EFFECT: improved method for treatment and utilization.

2 tbl, 2 dwg, 2 ex