摘要
The performance of sheet metal structured packing Mellapak 350Y in a pilot-scale high-pressure column(0.15 m I.D.) was investigated at 700-1900 kPa. The packing height was 2.0 m. Isobutane and n -butane was used as test mixture. The imperfect flow phenomena in column,such as maldistribution,wall flow,end effect and backmixing could be revealed by testing the composition profile along the packing. A concave or convex composition profile curve might be a result of maldistribution,and f _ max ,which was the maximum value of liquid maldistribution friction could be used to judge the sensitivity to maldistribution of a proposed packed bed. Through comparing the separation efficiency at the top section of packing with that at the bottom section would disclose the existence of wall flow and end effect in the column. Moreover,the extent of gas and liquid backmixing in packing could be estimated if the composition profile along the whole column could be obtained.
The performance of sheet metal structured packing Mellapak 350Y in a pilot-scale high-pressure column (0.15 m I.D.) was investigated at 700-1900 KPa. The packing height was 2.0 m. The mixture of isobutane and n-butane was used as test sample. The imperfect flow phenomena in column, such as maldistribution, wall flow, end effect and backmixing could be revealed by testing the composition profile along tin packing. A concave or convex composition profile curve might be a result of maldistribution, and fmax, which was the maximum value of liquid maldistribution friction, could be used to judge the sensitivity to maldistribution of a proposed packed bed. Through comparing the separating efficiency at the top section of packing with that at the bottom section would disclose the existence of wall flow and end effect in the column. Moreover, the extent of gas and liquid backmixing in packing could be estimated if the composition profile along the whole column could be obtained.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第5期810-814,共5页
CIESC Journal
基金
国家自然科学基金资助项目 (No 2 0 2 0 60 2 1
2 0 13 60 10 )~~
