HYDROCARBON DESULPHURATION METHOD Russian patent published in 2010 - IPC C10G69/02 C10G47/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for desulphuration of two streams containing hydrocarbon material involving the following steps: (a) reaction of a first hydrocarbon material-containing stream (1), containing hydrocarbon components which boil above 343°C, and hydrogen (28), with a desulphuration catalyst in a desulphuration zone (3) used in desulphuration conditions to produce an outgoing stream (4) from the desulphuration zone; (b) feeding the outgoing stream from the desulphuration zone into vapour-liquid separator (5) which provides a vaporous stream (17) and a first liquid hydrocarbon-containing stream (6); (c) feeding the vaporous stream (17) and a second hydrocarbon-containing stream (18) into a hydrocracking zone (21) to produce an outgoing stream from the hydrocracking zone. (d) feeding the outgoing stream from the hydrocracking zone and the hydrocarbon-containing stream (16) of a repeated cycle into a hydrogenation zone (22) to produce an outgoing stream (23) from the hydrogenation zone; (e) fractionation of the outgoing stream (23) from the hydrogenation zone to produce an ultralow-sulphur hydrocarbon-containing stream (38); and (f) fractionation of the first liquid hydrocarbon-containing stream (6) extracted from step (b) to obtain a hydrocarbon-containing stream (16) of the repeated cycle, and a second liquid hydrocarbon-containing stream (17) containing hydrocarbon components and having low sulphur concentration.

EFFECT: obtaining ultralow-sulphur hydrocarbon products.

7 cl, 1 ex, 3 tbl, 1 dwg