Film-shell type multiple-effect film-reducing distillation sea-water desalinating device

A technology of falling film distillation and multi-effect distillation, which is applied in seawater treatment, energy waste water treatment, general water supply conservation, etc., can solve the problems of high cost of seawater desalination equipment, difficult water production cost, and competition of large-scale equipment, and achieves simplified seawater pretreatment. Treatment process, the effect of reducing the cost of fresh water
CN101012071AInactive Publication Date: 2007-08-08NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Publication Date
2007-08-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a film-case typed multiple-effect falling-film distilling desalination device of seawater, which is characterized by the following: adopting plastic film to replace traditional metal heat exchange material to make film beam heat-exchange component; welding two films; drawing silk ribbon; supporting keel to form film beam; placing multiple film beams at equal interval; welding film beam and end film to make heat exchange component of film beam; connecting end film and case; insulating seawater from fresh water; placing film beam component in certain container unit of case to constitute evaporator.
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Description

technical field

[0001] The invention belongs to the field of water treatment and seawater desalination, in particular to a membrane shell type multi-effect falling film distillation seawater desalination device. Specifically, it uses the characteristics of small pressure difference between effects of multi-effect distillation devices, replaces traditional metal heat exchange materials with plastic films, designs a membrane shell structure, adopts falling film distillation process, and uses welding and equidistant ribbons between the films. Tension or keel support, used for multi-effect distillation seawater desalination and high-purity water preparation. Background technique

[0002] my country's annual per capita fresh water resources are about 2,400 cubic meters, which is 1 / 4 of the world's per capita fresh water resources. Among the more than 660 cities in the country, more than 400 cities are short of water, and 108 of them are seriously short of water. The shortage of...

Claims

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