METHOD FOR PRODUCING BITUMEN AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC C10C3/04 

FIELD: oil and gas industry.

SUBSTANCE: for bitumen production, raw material is prepared by vacuum distillation at residual pressure of column top of 10-30 mm Hg with obtaining expanded spectrum of heavy oil fractions with T_{of boiling point}=410-445°C, obtained heavy fraction is fed into buffer tank, mixed with bitumen compound in volume up to 30%, which is supplied from the dispersion zone of the oxidation reactor, and the oxidation activator. The obtained mixture is fed into the middle part of the oxidation reactor under the separating plate to the oxidation zone, where oxidized bitumen with raw material in volume of up to 30% is supplied from the zone of the dispersion located above the separating plate, at the same time air mass in volume of 25-160 m³/t of raw material is supplied into the middle part and lower part of oxidation reactor, at that, the oxidation is carried out in laminar-film mode at 170-250°C to obtain finely dispersed bitumen, the obtained finely dispersed bitumen from the oxidation reactor is fed into the buffer tank of the second stage and mixed with the bituminous compound, in volume of up to 30%, and oxidation stabilizer. The obtained mixture is fed from the buffer tank of the second stage to the middle part of the oxidation reactor of the second stage under the separating plate into the oxidation zone, to which oxidized bitumen is supplied simultaneously with the raw material in a volume of up to 30% from the dispersion zone located above the separating plate, at the same time the air mass is fed in volume of 25-160 m³/t of raw material into the middle part and the lower part of the oxidation reactor, at that, the oxidation is carried out in laminar-film mode at 170-214°C, obtained bitumen is withdrawn from the lower part of the second-stage oxidation reactor as commercial bitumen.

EFFECT: method is implemented using proposed unit, which makes it possible to use raw materials not only from heavy oil residues of traditional oils, but also the raw material directly from the superviscous oils and also their mixtures, form the required fractional and group chemical composition of the raw material for bitumen and to obtain the finely dispersed bitumen, and to increase the efficiency of the oxidation process and to stabilize the qualitative characteristics of the obtained bitumen.

5 cl, 2 dwg, 2 tbl