共查询到19条相似文献,搜索用时 93 毫秒
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简介了空分装置中分子筛纯化器的工作原理,流程。分析了分子筛纯化器的透水的原因及危害,阐述了分子筛透水的处理方法及预防措施。 相似文献
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简介了小型空分设备及分子筛净化器的工作流程,分析其常见的几种故障,并提出了相对的维修与处理措施,希望促进小型空分设备的分子筛纯化器系统的平稳运行。 相似文献
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介绍了制氮系统的基本原理,对我公司的制氮纯化器中分子筛的特性及工况进行了分析,找出其失效原因,提出了延长分子筛使用寿命的具体方法. 相似文献
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通过对大量数据的统计、对比、分析阐述了空分装置主换热器异常的现象、发展过程及原因;通过对分子筛床层阻力的计算、分析给予曾过水的分子筛以定性,指导了检修工作。 相似文献
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筛板喷射工况下的雾沫夹带 总被引:2,自引:0,他引:2
以空气/水为物系,对筛板上泡沫和喷射两种工况下的雾沫夹带进行了实验测量,依据喷射工况下雾沫夹带量随气液流量变化的规律,提出了喷射强度的概念及其定量表示,发现喷射工况存在一般喷射和强烈喷射两个状态,并对一般喷射状态下的雾沫夹带进行了新法关联。 相似文献
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Screen trays are proprietary devices similar to sieve trays which are used in distillation and absorption applications. The pressure drop, liquid holdup and entrainment are measured for screen trays in an air/water column and compared to results obtained with sieve trays. The effciencies of both types of trays were compared in a distillation column using systems of various physical properties (methanol/water, acetic acid/water and cyclohexane/n-heptane mixtures). It was found that the screen tray has a lower dry pressure drop, higher liquid holdup, lower entrainment and weeping, and higher jet flooding capacity than the sieve tray. However, the effciencies of both trays are similar for the systems studied. A model was developed for predicting total pressure drop for screen trays using an air/water column. The model was tested using results for methanol/water, cyclohexane/n-heptane and acetic acid/water systems at total reflux. The deviations are within +/- 20% for 90% of the data points. The effect of a bed of mesh packing on the screen tray was also studied. It was found that the packing led to a higher tray effciency, but resulted in a higher tray pressure drop. 相似文献
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Screen trays are proprietary devices similar to sieve trays which are used in distillation and absorption applications. The pressure drop, liquid holdup and entrainment are measured for screen trays in an air/water column and compared to results obtained with sieve trays. The effciencies of both types of trays were compared in a distillation column using systems of various physical properties (methanol/water, acetic acid/water and cyclohexane/n-heptane mixtures). It was found that the screen tray has a lower dry pressure drop, higher liquid holdup, lower entrainment and weeping, and higher jet flooding capacity than the sieve tray. However, the effciencies of both trays are similar for the systems studied. A model was developed for predicting total pressure drop for screen trays using an air/water column. The model was tested using results for methanol/water, cyclohexane/n-heptane and acetic acid/water systems at total reflux. The deviations are within +/- 20% for 90% of the data points. The effect of a bed of mesh packing on the screen tray was also studied. It was found that the packing led to a higher tray effciency, but resulted in a higher tray pressure drop. 相似文献
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简要介绍了ZSM-5分子筛的结构,综述了ZSM-5分子筛作为吸附剂处理大气以及水污染的研究进展。阐述了该材料在吸附领域中的优势及其发展趋势,小结了ZSM-5分子筛在水和大气污染治理方面的应用及发展方向,提出了针对处理对象来调整孔道结构和半径、硅铝比以及负载活性成分,以提高其吸附容量,为环境污染治理提供指导。 相似文献