压延孔板波纹填料性能研究

本文阐述了利用压延孔薄片制成的新型高效低阻力精馏填料的特性,给出在100mm塔径中用甲基环己烷-甲苯及乙醇-水两种不同体系在大气压下精馏的试验数据。由于压延孔薄片上的孔刺具有毛细作用,能使碳氢化合物或醇的水溶液自动地分散于其表面使填料润湿,因此汽-液之间能迅速达到平衡,显著地节约精馏操作的起动时间。 由于填料可由比较价廉的金属薄片制成,因此比用金属丝网制成的填料价格低廉。 实验数据还表明这种新型填料的等板高度为111—172mm,每块理论板的压阵为2.7—3mmH_2O随气体负荷F因子由1.22至2.25而异。 因此这种新型填料应用于真空精馏方面也是很有发展前途的。

Operating Characteristics of Protrusion Corrugated Ribbon Packing

The present paper delineates the characteristics of a new efficient low pressure drop distillation packing which is made from protruded thin metal ribbon. Test data are given on the packing in 100 millimeter diameter column by distillation of mixtures of methylcyclohexane and toluene, ethyl alcohol and water under atmospheric condition.Because of the capillary nature of the metallic barrier surface on which liquid hydrocarbon or aqueous alcohol can be automatically spread, the packing is readily wetted, and greatly aids the attainment of equilibrium thereby. Consequently, considerable time is saved in getting the distilling operation started. Since the packing is made from thin flat metal, a relatively inexpensive starting material, it is less expensive than packings made from wire gauze.Experimental results have shown that among the advantages of this packing as mentioned above, it features a H.E.T.P. of 111 to 172mm, and a pressure drop of 2.7 to 3 mm of water per theoretical plate, depending upon the gas load F-factor varying in the range of 1.22 to 2.25.Thus it would appear that the packing is also a promising low pressure drop packing suitable for vacuum distillation.