从理论上分析了悬挂式降液管塔板上产生冲击漏液的原因,并提出在塔板的受液区安装防冲击漏液装置来减小冲击漏液量。在一f500的冷模塔内以空气-水为物系测定了冲击漏液量,在一 f 300的热模内以酒精-水为物系测定了塔板效率。结果表明:...从理论上分析了悬挂式降液管塔板上产生冲击漏液的原因,并提出在塔板的受液区安装防冲击漏液装置来减小冲击漏液量。在一f500的冷模塔内以空气-水为物系测定了冲击漏液量,在一 f 300的热模内以酒精-水为物系测定了塔板效率。结果表明:没装防冲击漏液装置的悬挂式降液管塔板的冲击漏液量达总液量的7%以上,而安装防冲击漏液装置的悬挂式降液管塔塔板基本上没有冲击漏液,可以提高塔板传质效率5%以上。展开更多
Membrane dispersion extraction is a process with a macroporous membrane as dispersion medium. In this paper, 30%TBP(in kerosene)/nitric acid/H 2O is chosen as an experimental system. The mass transfer characteristics ...Membrane dispersion extraction is a process with a macroporous membrane as dispersion medium. In this paper, 30%TBP(in kerosene)/nitric acid/H 2O is chosen as an experimental system. The mass transfer characteristics are studied in two kinds of membrane dispersion modules.In order to improve mass transfer performance, a concentric inner element is designed. The effects of transmembrane pressure and the flux of continuous phase on efficiency, as well as on the flux of dispersion phase are investigated. The experimental results show that the flux of disperse phase is increased with an increase of the transmembrane pressure. However, it could hardly be influenced by the flux of continuous phase. mass transfer efficiency decreases slightly when the pressure or the flux of continuous phase is increased. The concentric inner element can improve the mass transfer performance greatly. Membrane dispersion extraction can be carried out with a higher mass transfer efficiency.展开更多
The separation efficiency of a representative sheet metal structured packing (Mellapak 350Y) in experimental columns (0.15?m i.d.) is presented at high-pressure and total reflux distillation conditions. N -butane and ...The separation efficiency of a representative sheet metal structured packing (Mellapak 350Y) in experimental columns (0.15?m i.d.) is presented at high-pressure and total reflux distillation conditions. N -butane and n -pentane is used as the testing system.Pressures span the range of 0.7-1.9?MPa.With the increase of F -factor,the HETP values decrease slightly in the loading area at all test pressure but increase before flooding point.By comparing the experiment data with the predictions of SRP model,it is found that SRP model performance deteriorates at a high pressure.展开更多
文摘从理论上分析了悬挂式降液管塔板上产生冲击漏液的原因,并提出在塔板的受液区安装防冲击漏液装置来减小冲击漏液量。在一f500的冷模塔内以空气-水为物系测定了冲击漏液量,在一 f 300的热模内以酒精-水为物系测定了塔板效率。结果表明:没装防冲击漏液装置的悬挂式降液管塔板的冲击漏液量达总液量的7%以上,而安装防冲击漏液装置的悬挂式降液管塔塔板基本上没有冲击漏液,可以提高塔板传质效率5%以上。
文摘Membrane dispersion extraction is a process with a macroporous membrane as dispersion medium. In this paper, 30%TBP(in kerosene)/nitric acid/H 2O is chosen as an experimental system. The mass transfer characteristics are studied in two kinds of membrane dispersion modules.In order to improve mass transfer performance, a concentric inner element is designed. The effects of transmembrane pressure and the flux of continuous phase on efficiency, as well as on the flux of dispersion phase are investigated. The experimental results show that the flux of disperse phase is increased with an increase of the transmembrane pressure. However, it could hardly be influenced by the flux of continuous phase. mass transfer efficiency decreases slightly when the pressure or the flux of continuous phase is increased. The concentric inner element can improve the mass transfer performance greatly. Membrane dispersion extraction can be carried out with a higher mass transfer efficiency.
文摘The separation efficiency of a representative sheet metal structured packing (Mellapak 350Y) in experimental columns (0.15?m i.d.) is presented at high-pressure and total reflux distillation conditions. N -butane and n -pentane is used as the testing system.Pressures span the range of 0.7-1.9?MPa.With the increase of F -factor,the HETP values decrease slightly in the loading area at all test pressure but increase before flooding point.By comparing the experiment data with the predictions of SRP model,it is found that SRP model performance deteriorates at a high pressure.
