The refining process of elemene from oil of Rhizoma Curcuma was studied by vacuum batch distillation. The suitable operating conditions of the refined process were obtained.
采用真空间歇精馏方法对从莪术精油提取榄香烯的精制过程进行了研究，得到适宜的工艺条件。
The refining process of citral product from natural litsea cubeba was studied by means of vacuum batch distillation.
采用减压间歇精馏方法，对从天然产物山苍子油中提取柠檬醛产品的精制过程进行了研究。
The test results show that it is technically feasible to separate silver from crude bismuth by vacuum distillation instead of traditional Parke's process of desilverization(zinc desilverization).
试验结果表明，采用真空蒸馏法脱除粗铋中银代替传统的加锌除银法，在技术上是可行的。
Vacuum distillation is the key process to remove foreign materials from titanium sponge. Rational choosing of assembling vacuum unit is of vital importance to improving the quality of titanium sponge.
真空蒸馏是除去海绵钛中杂质的关键过程，合理选择真空机组对提高海绵钛的质量至关重要。
Meanwhile the refining process was improved, using crystallization from petroleum-benzene instead of high vacuum distillation. The process was simplified for the benefit of industry production.
同时改进了精制工艺，用石油醚-苯进行结晶代替高真空蒸馏，简化了工艺，有利于工业化生产。
The process flow sheet of vacuum distillation of Bi-Ag-Zn crust was drawn up, and its rationality was argued.
拟定了真空蒸馏铋银锌壳制取粗银、粗铋和粗锌的工艺流程，并论证了该流程的合理性。
PVDF hollow fiber membrane module and PTFE flat membrane module were compared in the vacuum membrane distillation processes for brine from SWRO desalination process.
采用PVDF中空纤维膜及PTFE微孔平板膜组件对反渗透海水淡化浓盐水的真空膜蒸馏过程进行了研究。
Such as: vacuum distillation, evaporation, dehydration, crystal, drying in the process.
如：真空蒸馏、蒸发、脱水、结晶、干燥等工艺过程中。
The 1 # atmospheric-vacuum distillation unit of SINOPEC Yangzi Petrochemical Company was revamped to process light crude oil.
介绍了中国石化扬子石油化工股份有限公司炼油厂Ⅰ套常减压蒸馏装置改炼轻质原油的改造设计情况。
The process is simple and can be integrated with atmospheric and vacuum distillation unit with profit.
本工艺简单，如与常减压组成浅度加工的联合装置，可以得到较好的经济收益。
The process is simple and can be integrated with atmospheric and vacuum distillation unit with profit.
本工艺简单，如与常减压组成浅度加工的联合装置，可以得到较好的经济收益。
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