HYDROGEN-CONTAINING GAS CONCENTRATION SYSTEM Russian patent published in 2024 - IPC B01D3/14 B01D53/14 C10G45/02 

FIELD: oil refining industry.

SUBSTANCE: invention relates to equipment for hydrotreating middle distillate fractions. Invention relates to a hydrogen-containing gas concentration system, comprising a hot hydrogenation product separator with lines of a heavy fraction and vapors of a light fraction, on which there is an absorption refrigerating machine heater, an air cooler, refrigerator of absorption refrigerating machine and cold separator with line of light fraction and line of circulating hydrogen-containing gas, on which there is an absorber with a hydrocarbon absorbent line, a purified circulating hydrogen-containing gas line and an absorbate line, as well as a stabilization column, which top is equipped with cooling system and stabilization gas line, and bottom is equipped with stable fraction line. Light fraction line is equipped with reducing device, bottom of stabilization column is equipped with stable fraction output line and heating system, heater of absorption refrigerating machine and refrigerator of absorption refrigerating machine are connected to absorption refrigerating machine by lines of input/output of heat carrier and cooling agent, respectively. Absorption refrigerating machine is equipped with an additional refrigerator located on the hydrocarbon absorbent line before the absorber, and the absorbate line is equipped with a recuperative heat exchanger and is connected to the middle part of the stabilization column below its connection to the light fraction line in the upper part of the stabilization column, note here that stable fraction line is divided into stable light fraction line and absorbent line with recuperative heat exchanger, extra cooler and absorber top part.

EFFECT: increased concentration of hydrogen in purified circulating hydrogen-containing gas and reduced power consumption.

1 cl, 1 dwg, 1 ex