METHOD OF PRODUCING CYCLOHEXANE Russian patent published in 2019 - IPC C07C13/18 C07C5/10 B01J23/72 B01J23/86 B01J23/883 B01J23/885 

FIELD: chemistry.

SUBSTANCE: disclosed is a method of producing cyclohexane by vapor phase hydrogenation of benzene, which contains impurities of sulfur compounds at high temperature and high pressure in several reaction zones in the presence of nickel-chromium and copper-containing catalysts located in different reaction zones, using a copper-containing catalyst in a first process zone reaction zone, with temperature control in a reaction zone containing a nickel-chromium catalyst, by feeding a condensate from the separator into the reaction zone, followed by evaporation thereof. Process is carried out in three reaction zones, in second zone nickel-chromium catalyst is used with addition of inert components – ceramic balls at weight ratio of nickel-chromium catalyst: ceramic balls equal to (60–70):(40–30), and in third zone nickel-chromium catalyst is used at weight ratio of copper-containing catalyst: nickel-chromium catalyst equal to (20–40):(80–60), and temperature control is carried out in each of reaction zones containing nickel-chromium catalyst by feeding condensate into reaction zones from separate separators.

EFFECT: technical result is the possibility of reducing power consumption and developing a method which enables reliable control of heat release during the process of hydrogenation of benzene.

3 cl, 1 tbl, 7 ex, 2 dwg