SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (6): 949-954.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Effect of Working Temperature on the Resistance Characteristic of a Pleated Stainless Steel Woven Filter

LI Juan, SHI Yumei, WANG Rongshun   

  1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2008-09-05 Revised:2009-04-10 Online:2009-12-28 Published:2009-12-28
  • Supported by:
    Supported by the Shanghai Committee of Science and Technology, China (03DZ14014)

Effect of Working Temperature on the Resistance Characteristic of a Pleated Stainless Steel Woven Filter

李娟, 石玉美, 汪荣顺   

  1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
  • 通讯作者: LI Juan,E-mail:lijuan_54@sjtu.edu.cn
  • 基金资助:
    Supported by the Shanghai Committee of Science and Technology, China (03DZ14014)

Abstract: Effect of working temperature on the resistance characteristic including the permeability coefficient and the pressure drop evolution of a pleated stainless steel woven filter with a nominal pore size of 0.5 μm has been studied.The permeability coefficient was obtained based on the pressure drop data and the Darcy's law.In three filtration experiments,pure carbon dioxide at 283 K,nitrogen at 85 K and liquid helium at 18 K are adopted,respectively.It is found that the permeability coefficient decreases at the working temperature due to the cold shrink of the filter element at cryogenic temperature.Then,two kinds of feed slurries,mixture of liquid nitrogen and solid carbon dioxide at 85 K,and mixture of liquid helium and solid nitrogen at 18 K,flow into the filter cell.The solid particles are deposited on the filter surface to form a filter cake and the purified liquid flows through the filter.It is found that the pressure drop evolution shows the same trend on these two temperatures,which can be divided into three stages with high filtration efficiency,indicating the feasibility of the filter for cryogenic application.However,variant cake resistances are obtained,which is resulted from the different interactions between solid particles in the feed slurry at lower working temperature.

Key words: resistance characteristic, permeability coefficient, pressure drop, woven filter, working temperature

摘要: Effect of working temperature on the resistance characteristic including the permeability coefficient and the pressure drop evolution of a pleated stainless steel woven filter with a nominal pore size of 0.5 μm has been studied.The permeability coefficient was obtained based on the pressure drop data and the Darcy's law.In three filtration experiments,pure carbon dioxide at 283 K,nitrogen at 85 K and liquid helium at 18 K are adopted,respectively.It is found that the permeability coefficient decreases at the working temperature due to the cold shrink of the filter element at cryogenic temperature.Then,two kinds of feed slurries,mixture of liquid nitrogen and solid carbon dioxide at 85 K,and mixture of liquid helium and solid nitrogen at 18 K,flow into the filter cell.The solid particles are deposited on the filter surface to form a filter cake and the purified liquid flows through the filter.It is found that the pressure drop evolution shows the same trend on these two temperatures,which can be divided into three stages with high filtration efficiency,indicating the feasibility of the filter for cryogenic application.However,variant cake resistances are obtained,which is resulted from the different interactions between solid particles in the feed slurry at lower working temperature.

关键词: resistance characteristic, permeability coefficient, pressure drop, woven filter, working temperature