METHOD OF DELAYED CARBONISATION OF OIL RESIDUES Russian patent published in 2012 - IPC C10B55/00 C10G9/14 

FIELD: oil-and-gas production.

SUBSTANCE: proposed method comprises heating initial carbonisation stock in tubular furnace 1, feeding it into evaporator 2 for mixing with recycle and producing secondary stock of carbonisation in tubular furnace 4, and feeding it into carbonisation chambers 5. It includes feeding produced carbonisation products from carbonisation chambers 5 into rectification column 3 for fractionation to produce gas, gasoline, light and heavy gas oil of carbonisation, and distillation residue. It includes also feeding cooled heavy gas oil to mass exchange devices at said rectification column bottom. Note here that cooled light gas oil is fed to heat exchangers of rectification column top. Amount of aforesaid gas oils is varied subject to required quantity and quality of said gas oils and distillation residues. Heavy gas oil of carbonisation is used as recycle.

EFFECT: expanded process performances, control over quantity and quality of gas oil fractions, longer life.

3 cl, 1 dwg, 2 tbl, 4 ex