BITUMEN PRODUCTION PROCESS Russian patent published in 2006 - IPC C10C3/04 

FIELD: petroleum processing.

SUBSTANCE: mazut is subjected to vacuum distillation to produce weighted goudron at residual column top pressure 30-50 mm Hg. Weighted goudron is mixed with organic feedstock additives, namely with petroleum processing products, at ratio between 80:20 and 98:2. Resulting is oxidized with air oxygen at 230-270°C to give product characterized by needle penetration depth 35-45·0.1 mm at 25°C. Oxidized product is finally compounded with mixture of weighted goudron and organic feedstock additive (prepared goudron) at ratio between 80:20 and 90:10 until needle penetration depth achieves 50-200·0.1 mm at 25°C.

EFFECT: improved performance characteristics of target product.

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