CIESC Journal

• SEPARATION SCIENCE & ENGINEERING • 上一篇    下一篇

充碳塑料管壳式增湿-去湿淡化装置及过程:模拟和实验研究

成怀刚; 王世昌   

  1. Chemical Engineering Research Center, State Key Laboratory of Chemical Engineering, School
    of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-08-28 发布日期:2007-08-28
  • 通讯作者: 成怀刚

Modelling and experimental investigation of humidification- dehumidification desalination
using a carbon-filled-plastic shell-tube column

CHENG Huaigang; WANG Shichang   

  1. Chemical Engineering Research Center, State Key Laboratory of Chemical Engineering, School
    of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-08-28 Published:2007-08-28
  • Contact: CHENG Huaigang

摘要: The modelling and experimental investigation of a thermally coupled humidification-
dehumidification desalination process using a carbon-filled-polypropylene shell-tube column
are presented. A heat/mass transfer model is established to study the correlation among
productivity, thermal efficiency, physicochemical parameters (gas/liquid phase temperature,
heat/mass transfer coefficient, Reynolds number etc.), and operating conditions (the
temperature of feed water, the flow rates of external steam, feed water, and carrier air);
at the same time, the effects of operating conditions on the productivity and thermal
eficiency of the column are investigated both theoretically and experimentally, which
indicate that the optimum flow rates of external steam, feed water, and carrier gas are
0.18, 60, and 10kg•h-1, respectively, and the higher the feed water temperature (≤95℃)
is, the greater the productivity and the thermal efficiency will be. Furthermore,
performance comparison with the previous study shows that the condensate productivity of
this carbon-filled-plastic column is not lower than that of the copper column, which
demonstrates the practicability and feasibility of applying such a plastic column to the
humidification-dehumidification desalination process.

关键词: desalination;humidification-dehumidification;carbon-filled-polypropylene;simulation

Abstract: The modelling and experimental investigation of a thermally coupled humidification-
dehumidification desalination process using a carbon-filled-polypropylene shell-tube column
are presented. A heat/mass transfer model is established to study the correlation among
productivity, thermal efficiency, physicochemical parameters (gas/liquid phase temperature,
heat/mass transfer coefficient, Reynolds number etc.), and operating conditions (the
temperature of feed water, the flow rates of external steam, feed water, and carrier air);
at the same time, the effects of operating conditions on the productivity and thermal
eficiency of the column are investigated both theoretically and experimentally, which
indicate that the optimum flow rates of external steam, feed water, and carrier gas are
0.18, 60, and 10kg•h-1, respectively, and the higher the feed water temperature (≤95℃)
is, the greater the productivity and the thermal efficiency will be. Furthermore,
performance comparison with the previous study shows that the condensate productivity of
this carbon-filled-plastic column is not lower than that of the copper column, which
demonstrates the practicability and feasibility of applying such a plastic column to the
humidification-dehumidification desalination process.

Key words: desalination, humidification-dehumidification, carbon-filled-polypropylene, simulation