AROMATIC HYDROCARBON PRODUCTION PROCESS Russian patent published in 2006 - IPC C07C2/08 C10G35/95 

FIELD: petrochemical processes.

SUBSTANCE: feedstock is brought into contact with catalyst based on Pentasil family zeolite in at least two zones differing from each other in conditions of conversion of aliphatic hydrocarbons into aromatic hydrocarbons, first in low-temperature conversion zone to covert more active feedstock components to produce aromatic hydrocarbons containing product followed by recovering C₅₊-hydrocarbons therefrom and, then, contacting the rest of hydrocarbons produced in low-temperature conversion zone with catalyst in high-temperature conversion zone, wherein less active component(s) is converted into aromatic hydrocarbons containing product followed by recovering C₅₊-hydrocarbons therefrom.

EFFECT: enabled production of aromatic hydrocarbons under optimal conditions from feedstock containing aliphatic C₁-C₄-hydrocarbons with no necessity of separating the latter.

4 cl, 1 dwg, 1 tbl