METHOD OF PRODUCTION OF BITUMEN Russian patent published in 2006 - IPC C10C3/00 C10G27/10 

FIELD: oil processing industry; petrochemical industry; methods of production of bitumen.

SUBSTANCE: the invention is pertaining to the field of reprocessing of the wastes of the oil processing industry and the petrochemical industry, in particular, to reprocessing the acid sludges and can be used for production of the bitumens applied in the road construction, in production of roofing and insulating and other materials. Substance: the acid sludge preferentially with the contents of sulfuric acid, which is not exceeding 7 % from mass of the residual acid sludge, is heated in the flowing reactor at the temperatures of the cracking and below the temperature of the coke formation. The nonvolatile hydrocarbon fraction is withdrawn from the reactor. The components with the boiling point above 200°C are extracted from the vapor hydrocarbon fraction and mixed with the non-volatile hydrocarbon fraction.

EFFECT: the invention ensures production of the bitumens applied in the road construction, in production of roofing, insulating and other materials.

2 cl, 1 dwg, 2 ex