为了降低重油催化裂化柴油中硫、氮等不安定组分的含量，采取添加fs化学精制剂的方法。
In order to decrease the content of unstable components such as sulphur, nitrogen and so on in RFCC LCO, an approach to chemical refining agent FS is adopted in our experiment.
对焦化柴油进行加氢精制前化学精制处理，可使焦化柴油中的胶质、氧化总不溶物、烯烃等含量大幅度降低。
The each content of gum, total oxidation insoluble matters and olefins, etc, is decreased significantly by chemical treatment of coker diesel oil before hydro-refining.
在高分子化学实验中，单体的精制主要是对烯类单体而言，也包括某些其它类型单体。
In polymer chemistry experiments, the monomer is refined mainly in terms of vinyl monomers, but also some other types of monomers.
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