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vacuum purification
相关语句
  真空净化
     Study on Transformer Oil Cleavage in Vacuum Purification
     变压器油在真空净化过程中裂解的研究
短句来源
     In accordance with the theoretic research,transformer oil flowing mode is improved under vacuum condition and applied to 136 sets vacuum oil purification machines. The results indicate that improvement can reduce transformer oil cleavage in vacuum purification.
     根据理论研究的结果,提出了改进真空状态下变压器油流动方式的方案并应用到136台真空净油机上,从而有效降低了真空净化过程中变压器油的裂解程度。
短句来源
  真空提纯
     Design of vacuum purification puller by rare earth
     稀土金属真空提纯炉的研制
短句来源
  相似匹配句对
     Purification of Tellurium by Vacuum Distillation Method
     碲真空蒸馏提纯效果的探讨
短句来源
     Purification of Brine for Vacuum Production of Salt
     真空制盐中的卤水净化
短句来源
     ON DEGREE OF VACUUM
     真空度刍议
短句来源
     On the frying in vacuum
     真空油炸技术
短句来源
     PURIFICATION OF FENBENDAZOLE
     芬苯达唑精制方法
短句来源
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  vacuum purification
A concept of a closed mode of gas-separation membrane modules is introduced and applied to analyzing a vacuum purification procedure and to comparing radial and plane-parallel modules.
      


This paper discusses the typical processes for used oil purification and recovery,and discribles a new one for cost-effective oil purification-ZJF series oil vacuum purification and absorb plant.This plant's system compositoin and working principle are detailly described and the application conditions and its results also gived.

本文讨论了几种典型的废油再生与净化工艺。介绍了一种经济实用的净化与再生新工艺和设备——ZJF系列真空净化与吸附设备。并对该设备的系统构成及工作原理做了详细的叙述,列举了几种可应用的场合和使用效果。

A high vacuum purification line with lower leakage and lower background level had been established. The contamination of atmospheric argon to the samples was eliminated. The author determined the 40 Ar/ 36 Ar ratios of the samples analyzed previously using new method. Precise 40 Ar/ 36 Ar ratio is obtained by this system. The 40 Ar/ 36 Ar ratio observed by the new method is significantly higher than the previously determined ones, and the discrepancy was related to the...

A high vacuum purification line with lower leakage and lower background level had been established. The contamination of atmospheric argon to the samples was eliminated. The author determined the 40 Ar/ 36 Ar ratios of the samples analyzed previously using new method. Precise 40 Ar/ 36 Ar ratio is obtained by this system. The 40 Ar/ 36 Ar ratio observed by the new method is significantly higher than the previously determined ones, and the discrepancy was related to the Ar content of nature gas. Separating Ar from Kr and Xe is basically successful by temperature modulated cold finger, Kr and Xe isotopic compositions then can be measured.

在天然气稀有气体同位素分析技术方面 ,目前国内存在着主机辅助设备不足和检测项目较少等急需解决的问题 ,为此 ,本文建立了高真空、低漏率和低本底的天然气进样系统 ,成功地解决了实验室分析过程中空气Ar对天然气样品Ar的污染 ,获得了天然气中4 0 Ar/ 36Ar的准确值 ,新测比值较国内外已发表的4 0 Ar/ 36Ar值普遍高 ,二者差值的大小与天然气中Ar的含量密切相关。同时 ,应用自制的液氮调温冷阱实现了Ar与Kr+Xe的粗分离和天然气Kr与Xe同位素组成的检测

The progress of oil gas geochemistry has been accelerated by the development of determination on argon isotopic composition in recent years. The main difficulty with determination on argon isotopic composition in natural gas is the presence of atmospheric argon as a ubiquitous contaminant. This problem can be partially alleviated by the high vacuum purification and separation system designed in this work. On the request of “973” reseach project, some natural gas samples determined by ZHT1301 and MAT 271...

The progress of oil gas geochemistry has been accelerated by the development of determination on argon isotopic composition in recent years. The main difficulty with determination on argon isotopic composition in natural gas is the presence of atmospheric argon as a ubiquitous contaminant. This problem can be partially alleviated by the high vacuum purification and separation system designed in this work. On the request of “973” reseach project, some natural gas samples determined by ZHT1301 and MAT 271 mass spectrometry ten years ago are measured. By comparison between the new data and old determinations, it is found that the old measurement was contaminated by the high background and the method of sample transferred with the isotopic fractionation and about 73% of the old data can be used to calculate the source rock age. During determination of argon isotope in this work, a method called “transferring sample under tranquil state by different intervals” is used for avoiding the isotopic fractionation during the moving of sample to analytical room.

近年实验室研制了高精度、超高真空的净化系统与VG5400质谱计在线连接,实现了天然气中He、Ar同位素的在线测量。在测量过程中为杜绝进样过程的氩同位素质量分馏效应,本次工作采用了“分段静态平衡移样”法,提高了天然气中氩同位素测量的精度。应国家重大基础研究“973”天然气项目的要求和安排,对过去测量过氩同位素的一批钢瓶样(51个)进行了对比测量分析。研究结果表明,过去测量过程中存在空气本底的污染和同位素分馏效应,但两次测量结果有73%的数据在估算源岩年代公式的数据误差范围之内,本实验室认为原测量数据能够满足源岩地质年代段的粗略估算要求。另外,对比研究结果还表明,过去认为同一样品40Ar/36Ar测量结果较高值是正确的这一说法是不全面的。

 
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