Exhaustive refining of crude oil under low hydrogen pressure

The method for exhaustive refining of crude oil under low hydrogen pressure was described. The crude oil is first refined by hydrogenation under low pressure. The distillates formed are hydrorefined and hydrotreated in one process chain. A homogeneous nanocatalytic system based on water-soluble compounds of such metals as molybdenum, nickel and iron, is used for initial hydrogenation of the crude oil. The hydrogen donors in native crude oil in the form of hydroderivatives of bi- and tricyclic aromatic hydrocarbons transfer hydrogen to unsaturated compounds and stabilize products of a radical nature formed in decomposition of a petroleum multimer. The hydrotreating is conducted independently or combined with hydrorefining of crude, directing the vapor-gas stream from the hot separator to the reactor with a stationary catalyst bed. It is shown that for the processing of hydrogen, the unit must be equipped with a block for short-cycle adsorption and steam conversion of gas.