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Negative pressure strengthened multi-stage laminated disc type solar energy distillation system for desalination

A technology of distillation and desalination and solar energy, which is applied in the field of solar distillation and brackish water desalination, can solve the problems of large power consumption, high cost, and the membrane is easily affected by pollution and scaling, so as to reduce the cost of water production, save costs, The effect of excellent water quality

Inactive Publication Date: 2010-11-10
王鹤立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy consumption of the RO method is relatively low, but the membrane is easily affected by pollution and scaling, and has high requirements for pretreatment; MSF has the advantages of mature technology, reliable operation, low requirements for raw water pretreatment and good water quality; its disadvantages It consumes a lot of power and costs a lot

Method used

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  • Negative pressure strengthened multi-stage laminated disc type solar energy distillation system for desalination
  • Negative pressure strengthened multi-stage laminated disc type solar energy distillation system for desalination

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1: Water production test of a single-stage stacked disc system at different temperatures.

[0018] The distillation stack adopts a single-stage form, and the constant temperature brine (salt content is 10g / L) with a water temperature of 45°C, 50°C, 55°C, 60°C, and 65°C is successively passed through to test the dynamic water production rate, and the test suction pressure Both are 0.045Mpa. It is measured above 60°C and run for 20 hours a day. The water production rate can reach 241L / d, and the conductivity of the effluent water is 85μs / cm.

example 2

[0019] Example 2: Water production test of the two-stage stacked disc system at different temperatures.

[0020] The distillation stack adopts the two-level form of the upper and lower stacked plates, which are sequentially fed with constant temperature brine (salt content: 10g / L) with water temperatures of 45°C, 50°C, 55°C, 60°C, and 65°C for dynamic distillation. For the water production test, the experimental suction pressure is 0.045Mpa. It is measured that the water production rate can reach 368L / d and the conductivity of the effluent water is 72μs / cm.

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Abstract

The invention provides a negative pressure strengthened multi-stage laminated disc type solar energy distillation system for desalination, which takes solar energy as a heat source to heat brackish water in laminated discs, and under the negative pressure chimney effect of a vacuum pump, the multi-stage cyclic utilization of condensation heat and evaporation heat between the multi-stage laminated discs is realized, the heat transfer efficiency is increased, and pure distilled water can be obtained with less energy consumption. The system has the advantages of compact structure, small floor area, and low cost for water preparation, and is suitable for desalinating brackish water in western villages and small towns.

Description

Technical field: [0001] The invention relates to a technology for desalination of brackish water by solar energy distillation, which belongs to the technical field of water treatment equipment. Background technique: [0002] In the inland areas of Northwest my country, precipitation is scarce, evaporation is strong, and water resources are naturally scarce. Local people use groundwater as their main source of drinking water. However, the groundwater in this area generally contains salt and high fluorine content, and the salt content of water sources in some areas can reach more than 5000mg / L, far exceeding the limit value of total dissolved solids (1000mg / L) stipulated in the "Drinking Water Hygienic Standards". L). Long-term drinking of such highly mineralized brackish water can cause many diseases and seriously damage the health of the body; the chemical properties of various soluble inorganic salts contained in the brackish water are relatively active, which limits the u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14
CPCY02A20/124Y02A20/142Y02A20/212
Inventor 居玉坤王鹤立申亮
Owner 王鹤立
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