共查询到18条相似文献,搜索用时 312 毫秒
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QH—1型扁环填料萃取塔的设计计算 总被引:2,自引:0,他引:2
在系统研究的基础上,选择基于特性速度的方法,得出用于中代界面张力体系的QH-1扁环填料萃取塔的管速度计算公式,可用于工业装置的设计计算。 相似文献
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QH—1新型填料萃取塔轴向混合和传质性能研究 总被引:9,自引:0,他引:9
针对润滑油精制等实际应用的特点,选用低界面张力的正丁醇-丁二酸-水体系,在φ100mm的填料萃取柱中对国外引进的两种新型填料和我校新开发的QH-1型填料的萃取性能进行了比较。结果表明,QH-1型填料的传质效率最高,轴向返混最小。 相似文献
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QH-1型扁环填料的气液接触性能 总被引:1,自引:0,他引:1
本文简要介绍了新近研制的QH-1型扁环填料对于汽液接触过程的流体力学与传质性能。实验表明,这种填料具有通量大、阻力小、传质效率高的优点,可望代替鲍尔环等常用填料,以取得良好经济效益 相似文献
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QH—1型扁环填料的气液接触性能 总被引:6,自引:0,他引:6
本文简要介绍了新近研制的QH-1型扁环填料对于汽液接触过程的流体力学与传质性能。实验表明,这种填料具有通量大,阻力小,传质效率高的优点,可望代替鲍代环等常用填料,以取得良好经济效益。 相似文献
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QH—1型扁环填料在合成氨系统改造中的应用 总被引:2,自引:0,他引:2
选用了QH-1型扁环专利技术对合成氨系统中的脱碳塔进行改造,生产能力提高了25%,阻力降减上了27%,收到明显的经济效益,具有推广价值。 相似文献
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In this study, extraction of p-cresol from the simulated wastewater has been studied using centrifugal extractors and QH-1 extractant. The distribution ratio of p-cresol was approximately 308.5 in the QH-1-p-cresol (pH =2.0) system. The extraction stage efficiency of the single-stage centrifugal extractor was higher than 92%, and the extraction rate of the three-stage cascade was higher than 99%. When 15% NaOH was used for the stripping of p-cresol in QH-1 solution, the stripping rate of the three-stage cascade reached 100%. A mathematical model of multistage countercurrent extraction process that considers the phase volume change, extraction stage efficiency, and phase entrainment was used to simulate the extraction of p-cresol using centrifugal extractors. The calculated results using this model were in good agreement with the experimental results. 相似文献
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Chen-Hui Chou Siang-Yun Lee Kao-Shuo Chang 《Journal of the American Ceramic Society》2020,103(8):4129-4139
This study examined the fabrication of high-density rhombohedral ZnSnO3 nanowire arrays on fluorine-doped SnO2 (FTO) substrates through single-step hydrothermal synthesis and their synergistic piezo-related performance. The band gap (approximately 3.7 eV) and valence band (Ev) position (approximately 2.7 eV below the Fermi energy of Au [approximately −4.9 eV]) of the arrays were obtained using ultraviolet-visible (UV-Vis) spectrometry and UV photoelectron spectroscopy, respectively. An energy band diagram was obtained, revealing the favorable band positions of the samples for photodegradation and water splitting. Reliable and superior piezophotodegradation capability with a degradation rate constant of approximately 17.6 × 10−3 min−1 was also observed. Holes and •OH were predominant for the degradation mechanism, as determined by scavenger studies. Moreover, the samples exhibited favorable piezophotoelectrochemical (PPEC) performance, which was validated by the obtained applied bias photon-to-current efficiency. The stress-induced photocurrent density observed in a PPEC reaction was more than twice that observed in a photoelectrochemical reaction. Both piezophotodegradation and PPEC reactions were attributable to the inhibition of electron-hole pair recombination because of the excellent alignment of the nanowires, piezopotential buildup, and band bending of the ZnSnO3 nanowires. Our results indicate a positive effect of piezoelectricity on the piezo-related applications of the sample. 相似文献
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充矿鲁南化肥厂根据合成氨生产装置的工艺特点,采用聚乙二醇二甲醚溶剂(NHD)通过物理吸收酸性气及加热再生的方法,对其排出的酸性气体进行处理来制取高纯度硫化氢气体。该工艺流程简单,两塔流程中吸收塔和再生塔均为填料塔,选用新型填料QH-1扁环,成功生产出体积分数大于95%的硫化氢产品。 相似文献
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为回收合成氨生产过程产生的酸性气体,采用聚乙二醇二甲醚溶剂(NHD),通过物理吸收及加热再生的方法,制取高纯度硫化氢气体。两塔流程中吸收塔和再生塔均为填料塔,选用QH-1扁环填料。结果表明,硫化氢产品体积分数大于95%。 相似文献
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