PRODUCTION OF OLEFIN AND AROMATIC HYDROCARBONS BY PYROLYSIS OF GAS CONDENSATE

The preparation of ethylene and propylene by following the pyrolysis of the 36-279°C cut of gas condensate, and the optimal conditions for the preparation are discussed. The pyrolysis was conducted in a unit consisting of a heating section, a reactor with two connected tanks required for delivery of feedstock, and water for its dilution to a ratio of 1:0.5, and a section for cooling and receiving of the pyrolysis products. The temperature was maintained constant by regulating the voltage in the metallic winding of the furnace with an autotransformer during pyrolysis. The methane yield is maximum at 800°C, and then diminishes with increasing temperature. Higher-molecular paraffin and olefin hydrocarbons content in the pyrolysis gas decreases with increasing process temperature resulting in an increase in the percentage of their conversion to aromatic hydrocarbons. The benzene content in the aromatic concentrate also decreases at pyrolysis temperatures above 800°C due to the alkylation of the molecules of excited benzene with excited ethylene molecules.