Abstract: The control of viscosity of quench oil is the key and difficult point for an ethylene plant to reduce energy consumption and remain stable operation.Through analyzing the viscosity-rising mechanism of quench oil,it is found that the asphaltene content in quench oil is the main reason for the rise in viscosity.General viscosity reduction measurements practiced widely in the industry are summarized,such as regularly adding diesel,installing a viscosity reducing tower,and injecting t viscosity reducer,etc.Combined with actual production,some process adjustment measures are proposed such as feedstocks formula optimization,deeply controlling cracking reaction,control of tower bottom temperature and coke powder removal,aiming to ensure efficient,stable,and long-term operation of the quench oil system.
邹铖. 乙烯装置急冷油黏度控制措施探讨[J]. 现代化工, 2022, 42(1): 230-234.
ZOU Cheng. Measurements for controlling viscosity of quench oil in ethylene plant. Modern Chemical Industry, 2022, 42(1): 230-234.