A coal and oil co-hydrotreating processing technology and equipment

A oil-coal co-hydrotreating processing technology, characterized as the following steps:

• first of all, pulverizing the coal and drying, wherein the pulverized coal is mixed with one or several of crude oil, atmospheric residue, vacuum residue, FCC slurry oil, deasphalted oil, vacuum gas oil, coal tar in the coal and oil mixing and pulping device to prepare oil-coal slurry;
• after mixed with hydrogen, catalyst and additive, the oil-coal slurry is preheated into a slurry bed reactor with reacting pressure for thermal cracking and hydrogenation reaction;
• the coke, asphaltene and heavy metals are adsorbed on the catalyst, additives and unreacted coal in the reaction process;
• after reaction, all the products go into the hot high pressure separator for separation of solid from the bottom and gas from the top, and the gas goes into the fixed bed reactor for further hydrocracking or refining;
• distillate obtained enters the fractionating tower, and bottom vacuum gas oil is recycled to the coal and oil mixing and pulping device;
• wherein the catalyst is a mixture of molybdate and iron, the additive is a sulfurizing reagent, and the reaction pressure in the slurry bed reactor is in the range of 17-20 MPa.