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Solar seawater concentration desalting device and method

A technology of seawater concentration and solar energy, applied in chemical instruments and methods, seawater treatment, energy wastewater treatment, etc., can solve the problems of long start-up time, high cost, discontinuity, etc., and achieve the effect of ensuring continuity and increasing the concentration factor

Inactive Publication Date: 2014-03-19
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main advantage of humidification-dehumidification technology is that it relies on the ability of the air to carry moisture to complete the interphase transfer of water molecules. The process is simple to operate, but the efficiency is low
Especially the instability and discontinuity of solar radiation, it takes a long time to start when heating with a medium with a large heat capacity (such as silicone oil). takes a long time to run
However, the general air medium humidification-dehumidification solar seawater desalination is relatively low in efficiency and high in cost.

Method used

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  • Solar seawater concentration desalting device and method
  • Solar seawater concentration desalting device and method
  • Solar seawater concentration desalting device and method

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Embodiment 1

[0021] A solar seawater concentration and desalination device of the present invention, the air flow rate of fan 1 is 120m 3 / h, concentrating solar air heater 2 is a trough-type concentrating heat collector, the inner diameter of the heat-absorbing tube is 100mm, the focal length of the concentrator is 270mm, and the effective heat collecting area is 50m 2 , the characteristic size of evaporator 5 is 2000mm in length, 1500mm in width and 1500mm in height. Condenser 7 is a tubular condenser. 15 water-absorbing cloths are evenly arranged, and a float valve 4 and a concentrated brine discharge valve 8 are also provided. The concentrated solar air heater 2 and the evaporator 5 are connected through a Ф100mm pipe, and the evaporator 5 and the condenser 7 are also connected through a Ф100mm pipe . The heat collecting tubes of the concentrated solar air heater 2 are connected at both ends. The floating absorbent cloth turntable 6 is a rotatable rotating body, not limited to a circ...

Embodiment 2

[0023]In the solar seawater concentration and desalination method of the present invention, the fan 1 sends air into the concentrated solar air heater 2 and heats it into high-temperature hot air at 120°C. In the evaporator 5 of the concentrated brine discharge valve 8, there is a floating water-absorbing cloth turntable 6 that contains a fixed water-absorbing cloth support 9, a rotating shaft 10, a floating support axial support 11, a fixed water-absorbing cloth strip 12, and a floating support radial support 13 to absorb water. To the absorbent cloth, a microscopic evaporation environment is formed to promote the rapid and efficient diffusion of water into the air to form high-temperature saturated humid air. The material of the floating absorbent cloth turntable 6 is polymer absorbent fiber. The concentrated brine concentration is controlled at 150,000mg / L, and the floating absorbent cloth turntable 6 will automatically rotate due to the different salt concentrations in diff...

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Abstract

The invention provides a solar seawater concentration desalting device and method. The device mainly comprises a fan, a concentrating solar air heater, an evaporator, a floating type absorbent cloth turntable and a condenser. A micro-evaporation environment is actively formed by use of an absorbent cloth net, and the hot air is quickly evaporated through the floating type absorbent cloth turntable immersed in the evaporator; and the absorbent cloth generates density difference in the evaporation process so that the floating type absorbent cloth turntable automatically rotates in the evaporator in a manner of deviating from the gravity center to realize continuous operation of the evaporation process. Since the evaporation process is not influenced by the boiling point elevation and the scaling of inorganic salts such as calcium carbonate and magnesium hydroxide, up-to-quadruple concentration evaporation of seawater can be realized. The device and method can be applied to the concentration treatment of seawater desalination, solar salt making in a solar field and inorganic wastewater. Compared with a common distillation evaporation and reverse osmosis technology, the treatment is not influenced by the salt content in water, and the device can be used for treating seawater / brackish water until a high-concentration salt-containing water body is obtained.

Description

technical field [0001] The invention relates to a solar heat utilization device, in particular to a device and method for utilizing water diffusion and evaporation in hot air. Background technique [0002] At present, solar seawater concentration and desalination technology plays an active role in the supply of freshwater in coastal areas and islands. The basic process is to collect fresh water after evaporating water molecules in seawater or gathering water molecules through membrane methods. Concentration is accompanied by the desalination process, with different goals and different emphases. The desalination process focuses on the recovery rate of fresh water, while the concentration process pays more attention to the concentration multiple. In the seawater application technology of solar thermal utilization, desalination of seawater belongs to the former, while solar drying of salt belongs to the latter. The general solar desalination technology integrates solar heat co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F103/08
CPCY02A20/124Y02A20/142Y02A20/212Y02W10/37
Inventor 苏润西费学宁苑宏英姜远光
Owner TIANJIN CHENGJIAN UNIV
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