It is presented that some safety measure should be taken in the regeneration and fractionatingsystem to lower the production risk.
说明反应再生系统和分馏系统有必要采取一些安全防范措施，进一步降低生产的风险程度。
2
Revamping of the high-pressure separation system and the fractionating tower in the hydrofining unit for full range coker distillates by Yangzi Petrochemical Company are introduced.