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.
它是由天然棉和可循环的纸质层精制而成，它没有使用任何难以回收再利用的化学油墨或是制剂。
It’s crafted from natural cotton and recycled paper layer and it doesn’t use any chemical ink or adhesives that are tough to recycle.
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