CATALYST, METHOD OF ITS USE AND INSTALLATION FOR ANTI-WASTE DEPARAFINIZATION OF HYDROCARBON RAW MATERIAL Russian patent published in 2018 - IPC B01J29/40 C10G11/05 

FIELD: chemistry.

SUBSTANCE: catalyst based on aluminosilicate zeolite ZSM-5, which is characterized by a molar ratio of SiO₂/Al₂O₃, equal to 23-80, the residual content of sodium ions is less than 0.1% and modified with zinc oxide in an amount of 1.0-4.0 wt % (in terms of zinc). Modification of zeolite is carried out in three stages: in the first stage - by impregnation with a solution of acetate or zinc nitrate, in the second stage - by calcination zinc-containing zeolite at 300-600°C, and in the third stage - by treatment with a solution of ammonium fluoride. A method for the dewaxing of a hydrocarbon feedstock using the inventive catalyst is also provided. An installation for the non-hydrogen dewaxing of hydrocarbon feedstock charged with the claimed catalyst is also provided.

EFFECT: increased activity and stability of the catalyst, increasing the yield of a high-quality target product in the dewaxing of raw materials with increasing the process productivity, as well as simplifying the installation, reducing its metal consumption, increasing safety at work.

9 cl, 1 dwg, 2 tbl, 8 ex