FIELD: petroleum processing. SUBSTANCE: distributor unit has annular plate with multiple attached hollow rising pipes for distributing hydrogen-containing gas and liquid hydrocarbon stock through openings of pipes. Unit is connected to inner wall side of reactor. Hydrogenation treatment is effected by passing mixture of hydrogen- containing gas and liquid hydrocarbon stock stream into reaction zone of tubular reactor. When reaction mixture flows through tubular zones, released hydrogen-containing gas is admixed to liquid phase. EFFECT: achieved steady-state liquid-gas mixture flow. 5 cl, 7 dwg
