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Light and small type solar seawater desalination device and method

A solar energy, light and small technology, applied in the field of solar seawater desalination, can solve the problems of impossible circulation and ineffective treatment of high salinity solution, achieve stable and reliable water production and water quality, improve product competitiveness, The effect of low manufacturing cost

Pending Publication Date: 2018-11-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these patents are feasible in principle, it is impossible to realize the circulation at all in practice.
In addition, most devices do not work well with high salinity solutions

Method used

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  • Light and small type solar seawater desalination device and method
  • Light and small type solar seawater desalination device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 , The light and small solar seawater desalination device is composed of four parts: a feed liquid heating system 1, an energy supply system 16, an air humidification system 6 and an air dehumidification system 23.

[0046] The feed liquid heating system 1 includes a solar heat collector 2, a heat exchanger 3, a heat collecting circulation pump 4 and an oil storage tank 5, which convert the sun's radiant energy into heat energy, heat the circulating medium to provide a heat source, and then use it for the Heating of seawater; the oil storage tank is used to hold the heating circulation medium, the outlet of the oil storage tank is connected to the inlet of the collector circulation pump, the outlet of the collector circulation pump is connected to the inlet of the solar collector, and the circulation medium is transported into the solar collector through the collector circulation pump The solar collector increases the temperature by absorbing solar radia...

Embodiment 2

[0052] In this embodiment, the light and small solar seawater desalination device in Embodiment 1 is selected as the experimental device to conduct a long-term stable operation test experiment of the device. In this embodiment, the seawater with a salt concentration of 3.5wt% is selected as the solution to be treated, the temperature of the solution in the evaporation shower is set at 55°C, the flow controller is adjusted to make the circulation flow of the solution 60L / h, and the circulation flow of the cooling water It is 50L / h, and the cooling water temperature is controlled at 20-25°C. Adjust the air volume regulator so that the circulating wind speed of the system is 2.5m / s (2.65m 3 / min), the device runs continuously for 8 hours. The results of system water production and desalination rate are as follows: figure 2 shown. It can be seen that the water production per unit time of the system remains relatively stable at around 1600g / h. The desalination rate has also be...

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Abstract

The invention discloses a light and small type solar seawater desalination device and method. The device comprises a material liquid heating system, an energy source supplying system, an air humidification system and an air dehumidification system, wherein a circulating medium is heated through a solar heat collector and then enters a heat exchanger; after seawater is subjected to heat exchange with the circulating medium, the seawater enters a humidifier; air enters the humidifier from the bottom through a draught fan; the humidified and heated air enters a dehumidifier from the bottom and issubjected to heat medium exchange with cooling water which is sprayed from the upper part in the dehumidifier; fresh water is produced by condensation and is mixed with cooling water, and then a mixture falls into the bottom of the dehumidifier; cooled and dehumidified air enters the humidifier from the draught fan, and the process is circulated. According to the system disclosed by the invention, solar energy is used for supplying heat supplying power, and an air humidification process is strengthened by combining spraying and filler and the seawater distillation efficiency is improved; thedevice is operated under normal pressure, does not need a vacuum pump and can be used for treating a high-salinity solution; the method has a flexible scale and a wide application range, can be used for desalting seawater in coastal and island regions and also can be used for concentrating industrial wastewater.

Description

technical field [0001] The invention belongs to the technical field of solar seawater desalination, and in particular relates to a light and small solar seawater desalination device and method operating under low temperature and normal pressure, and has the characteristics of light, small, portable and modular. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water, which is an open-source incremental technology to realize the utilization of fresh water resources. At present, the commonly used seawater desalination methods include low-temperature multi-effect, reverse osmosis, multi-stage flash evaporation, thermal membrane cogeneration, electrodialysis, etc. In the reverse osmosis method, under the action of a high-pressure pump, water molecules pass through the reverse osmosis membrane to achieve the separation of salt and water, which requires continuous supply of electrical energy or mechanical energy, and as the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/043C02F1/14C02F2103/08Y02A20/142Y02A20/212Y02A20/124
Inventor 郭飞从硕蔡景成付清腾王天娇武志强张帆
Owner DALIAN UNIV OF TECH
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