Abstract:

The polymer content of styrene product of the 27 kt/a pyrolysis gasoline extraction unit at SINOPEC Zhenhai Refining and Chemical Company has fluctuated greatly since its start-up in this operation cycle, and the effect of measures such as optimizing process parameters and solidifying on-site operation was limited. Finally, the problem of high polymer content of styrene product was effectively solved by trying out new polymerization inhibitor and optimizing injection position, the product quality grade was improved, the tar production was reduced, and both the environmental benefit and economic benefit were achieved.

Key words:  ')">

 , pyrolysis gasoline, styrene, polymer, new polymerization inhibitor