vacuum relief valve

Study on regeneration of ethanol-loaded activated carbon by microwave irradiation under vacuum condition;

载乙醇活性炭真空微波解吸实验研究

The research of far-infrared drying of carrot under vacuum conditions;

胡萝卜远红外真空干燥试验参数的研究

Effects of overlap steps on oxygen production by vacuum pressure swing adsorption;

重叠步骤对真空变压吸附制氧性能的影响

The influence factors on the polyester polycondensation vaccum system and their treatment;

影响聚酯缩聚真空的因素及处理

Different type of vaccum pump and its combination used in existing polyester plant were introduced,also the economic analysis was done.

介绍已有的聚酯装置中所使用的不同形式的真空泵及组合 ,并对其进行经济分析。

Introduced are four displacing methods, namely complete mixing, non-mixing, vaccum deaeration, and pressure displacement.

介绍了常用的四种置换方法,即完全混合置换、无混合置换、真空置换和加压置换。