ROAD BITUMEN PRODUCTION METHOD Russian patent published in 2017 - IPC C10C3/00 C08L95/00 

FIELD: oil and gas industry.

SUBSTANCE: production method of bitumen is carried out by oxidation of the sludge part without its preliminary dilution to obtain superacidulated bitumen and its subsequent compound-filling with diluent oil products to produce bitumen. In this case, the sludge oxidation is carried out until the bitumen with the softening temperature of 60-90°C is obtained by the sequential deep oxidation in the column and then in the tubular reactor, and the part of unoxidized once-run sludge and/or asphalt of propane deasphalting and the residual extract of selective oil solvent refining is used as the diluent.

EFFECT: improve the quality of produced bitumen by reduction of the brittle temperature, increase of frost resistance, thermooxidative stability, expansion of the produced commercial bitumens range.

2 cl, 1 tbl, 4 ex