In addition, three stage evaporation, two stage extraction, double solvent extraction, oxidation inhibitor, variable frequency technology and advanced control technique ( for example DCS) also can improve the unit's operating level. 另外三效蒸发、两段抽提、双溶剂萃取、抗氧剂、变频技术及先进控制技术如DCS应用都可提高装置操作水平。
Improving Stability of LCO by Double-Solvent Extraction 双剂抽提法提高FCC柴油氧化安定性