PRELIMINARY HYDROFINING OF NAPHTHENES WITH FURTHER HIGH-TEMPERATURE REFORMING Russian patent published in 2015 - IPC C10G69/08 C10G63/02 C10G59/06 C10G67/02 C07C15/08 C07C5/27 C07C5/393 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to the method increasing yield of aromatic products out of hydrocarbon stock. The method includes passage of hydrocarbon stock to the first system of reactors operated with the first set of reaction conditions, which include the first reaction temperature within range of 445-475°C in order to obtain hydrocarbon flow with reduced naphthene content. Then passage of hydrocarbon stock to the second system of reactors operated with the second set of reaction conditions, which include high reaction temperature within range of 540-600°C for the purpose of ring formation and aromatization of paraffin compounds in order to obtain process flow of aromatic products; at that in the first system of reactors and in the second system of reactors catalyst is used, moreover catalyst in the first and second system of reactors is the same. Further process flow of aromatic products is passed into reformate splitter in order to obtain flow reformate overhead fractions containing aromatic compounds C6 and C7 and bottom reformate products containing heavy hydrocarbons.

EFFECT: usage of the method allows reduced energy consumption.

9 cl, 4 dwg, 5 tbl