DJ-3 type tray and patent distributor were adopted to replace the original floatvalve trays without altering the tower shell.
采用DJ - 3型塔盘及DJ - 3型专利技术分布器替换了原浮阀塔板，实现了不动塔体的技术改造。
2
The simulation calculations and analysis was made for operation technology of separation column in Zimmer polyester plant. The inner structure were reformed by directed floatvalvetray.