METHOD FOR PREPARING SINTERING ADDITIVE Russian patent published in 2011 - IPC C10C1/16 

FIELD: oil and gas production.

SUBSTANCE: oil stock is heated up in a furnace 3 and subjected to polycondensation in a reactor 9 at high temperature and pressure while a residual stock and a distillate are produced and recovered. The polycondensation process is discrete throughout the height of the reactor 9 by formation and sequential bottom-up movement of a reaction zone in the reactor 9 as far as said zone is filled with an end product. The distillates are supplied from the top of the reactor 9 by a line 14 into a rectification column 4 for separation.

EFFECT: invention allows providing higher productivity of the production process of the sintering additive by heat-treatable stock timing in the reaction zone.

6 cl, 1 dwg, 1 tbl