METHOD OF CO-PRODUCING HEXANE SOLVENT AND CYCLOPENTHANE Russian patent published in 2017 - IPC C07C7/04 C07C7/163 C07C9/15 C07C13/10 

FIELD: chemistry.

SUBSTANCE: invention relates to the method of co-producing a hexane solvent and cyclopentane from the hexane-containing fraction allocated from a wide fraction of light hydrocarbons, including the allocation of the fractionation of the hexane-containing fraction in the column, hydrotreating of the hexane-containing fraction, distillation of the hydrotreated hexane-containing faction to extract the isohexane fraction and the hexane solvent. The method is characterized by the fact that the top product of the fractionation column is sent to the reactor of hydrotreating with the boiling point of no higher than 75°C in a volumetric ratio of hydrogen, equal to 1:500-700 and the hexane solvent allocated from the cube of the distillation column of the hydrotreated hexane-containing fraction is sent for the purification to the hydrogenation reactor and the hexane solvent is produced with a benzene content of less than 0.02 wt %, and the isohexane fraction allocated from the top of the distillation column of the hydrotreated hexane-containing fraction is sent to the distillation column for allocation from the top of the pentane fraction and the cube of the methylpentane-cyclopentane fraction, which is sent to the next distillation column for separation from the cube of the methylpentane fraction and from the top of the target cyclopentane fraction.

EFFECT: simultaneous production of a hexane-containing fraction allocated from WSLH, a hexane solvent containing benzene and cyclopentane.

3 cl, 1 dwg, 3 ex