从减压渣油得到额外的馏分油减压渣油的短程蒸馏（ＶＲＳＤ）方法可从炼油厂减渣油回收５０～６０％额外重馏分油，同时浓缩原油中金属和过量碳到较少的渣油中。试验了三种不同类型的原油。馏分油适合作ＦＣＣ原料、润滑油原料或生产高纯度蜡，视所加工原油类型而定。一般... Short Range Distillation (VRSD) Process to Obtain Extra Distillate Residue from Vacuum Residue Oil 50-60% extra heavy distillate can be recovered from the refinery residue while concentrating the crude and the excess carbon to less Residue. Three different types of crude oil were tested. Distillate suitable for FCC raw materials, lubricating oil raw materials or production of high purity wax, depending on the type of crude oil processing may be. general...