LOW-SULPHUR OIL COKE'S PRODUCING METHOD Russian patent published in 2008 - IPC C10B55/00 

FIELD: oil and gas industry.

SUBSTANCE: method for producing low-sulphur oil coke lies in the fact that initial raw materials are made from oil chemistry and/or oil processing residue using mixer, which contain 5-15% of asphalt, and light fraction of slow coking liquids. Raw materials are heated in furnace convection coils and then mixed with vapour gases leaving the slow reactor in the still section of the rectifying column. Secondary raw materials enter furnace through transfer lines, whereinto some part of preheated light fraction of slow coking liquids is supplied via inlet point, and then they are heated up to the coking temperature and enter slow coking reactor through mixing point. The rest of light fraction of slow coking liquids is supplied to the above mixing point or directly to this reactor, and the total quantity of light fraction of slow coking liquids which is fed to secondary raw materials' inlet point prior to its heating up to coking temperature and to the mixing point before slow coking reactor or directly to this reactor is 10-20%.

EFFECT: invention allows increasing low-sulphur oil coke yield.

10 ex, 1 tbl, 1 dwg