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Evaporation device and evaporation system for high-speed evaporation with multiple physical fields

An evaporation device and physical field technology, applied in seawater treatment, water/sewage treatment, heating water/sewage treatment, etc., can solve the problems of low evaporation rate, large footprint, poor weather resistance, etc., to achieve no secondary pollution, reduce Heat loss and good water absorption

Inactive Publication Date: 2019-10-25
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, when using clean energy for seawater desalination technology, many materials that use solar photothermal methods to convert seawater into steam have been studied, but only the materials that convert seawater into steam are often poor in weather resistance and not stable enough. In the case of high light-to-heat conversion efficiency, the evaporation rate is still very low, which cannot meet the demand, and requires a large area to cover, occupying a large area

Method used

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  • Evaporation device and evaporation system for high-speed evaporation with multiple physical fields
  • Evaporation device and evaporation system for high-speed evaporation with multiple physical fields
  • Evaporation device and evaporation system for high-speed evaporation with multiple physical fields

Examples

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Embodiment 1

[0037] see figure 1 and figure 2 As shown, the embodiment of the present invention provides an evaporation device that utilizes various physical fields for high-speed evaporation, including an evaporation layer, a hydrophobic heat insulating layer 2, and a power supply device 3. The evaporation layer is configured to have heating and hydrophilic properties, and the evaporation The layer is used to extend into the water to be treated, the hydrophobic heat insulating layer 2 is arranged at the bottom of the evaporation layer, the power supply device 3 is connected with the evaporation layer, further, the evaporation layer includes a heating layer 11 and a hydrophilic layer 12, and the heating layer 11 is used to transfer electric energy And / or light energy is converted into thermal energy, the hydrophilic layer 12 is attached to one side of the heating layer 11, the hydrophilic layer 12 is used to extend into the water to be treated, and conduct the water to be treated to a pos...

Embodiment 2

[0044] see image 3 As shown, the embodiment of the present invention provides an evaporation system, including:

[0045] The evaporation chamber 4 is provided with the evaporation device 9 and the light-transmitting area 31 of the above-mentioned embodiment 1 in the evaporation chamber 4, the light-transmitting area and the evaporation device 9 are arranged directly, and the light-transmitting area is used to transmit sunlight;

[0046] The first water storage tank 5, the first water storage tank 5 communicates with the evaporation chamber 4, and the first water storage tank 5 is used to store water to be treated;

[0047] Condensation heat exchange chamber 6, the condensation heat exchange chamber 6 communicates with the evaporation chamber 4;

[0048] The second water storage tank 7, the second water storage tank 7 communicates with the bottom of the condensation heat exchange chamber 6;

[0049] Negative pressure generating device 8, the negative pressure generating devi...

Embodiment 3

[0053] On the basis of Example 2, in this example, the heating layer 11 is carbon cloth, the hydrophilic layer 12 is a hydrophilic fiber cloth, and the hydrophobic heat insulating layer 2 is polystyrene foam, wherein the hydrophilic fiber cloth covers Hydrophobic and heat-insulating polystyrene foam, the two ends of the carbon cloth are connected to the power supply device 3 with platinum electrodes, the heating part of the carbon cloth is in close contact with the hydrophilic fiber cloth by bonding, and the carbon cloth is kept facing upwards. It is placed in seawater to be treated.

[0054] When seawater is desalinated through the evaporation system, the normal light AM 1.5G, that is, the radiation intensity is 1kW / m 2 Under light conditions, no electric field and negative pressure (the power supply device 3 does not supply power, and the negative pressure generating device 8 has no effect), the desalination rate of seawater can reach 1.5kg m -2 h -1 ;In the normal light A...

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Abstract

The invention discloses an evaporation device and an evaporation system for high-speed evaporation with multiple physical fields and relates to the technical field of desalted water preparation. The evaporation device comprises an evaporation layer, a hydrophobic thermal-insulating layer and a power supply device, wherein the evaporation layer comprises a heating layer and a hydrophilic layer; theheating layer is used for converting electric energy and / or optical energy into heat energy; the hydrophilic layer is adhered to one side surface of the heating layer; the hydrophilic layer extends into water to be treated and is used for conducting the water to be treated to a position contacting with the heating layer; the hydrophobic thermal-insulating layer is fixed with the bottom of the evaporation layer and is positioned below the heating layer; and the power supply device is connected with the heating layer. The evaporation system is constructed by putting the evaporation device in anegative pressure environment and comprises a condensation heat exchange device. By adopting the evaporation device and the evaporation system, the evaporation velocity of seawater desalting can be increased.

Description

technical field [0001] The invention relates to the technical field of desalinated water preparation, in particular to an evaporation device and an evaporation system that utilizes various physical fields for high-speed evaporation. Background technique [0002] The shortage of fresh water resources is a severe and urgent problem faced by human beings. The fresh water that human beings rely on for survival is less than 3% of the total surface water, and with the increase of population and the pollution of the environment, fresh water resources are becoming more and more scarce. It is particularly urgent for seawater, brackish water desalination and sewage treatment and purification, which is also an important long-term and sustainable way to solve freshwater resources and protect the environment. [0003] At present, seawater desalination technologies are mainly divided into two categories: thermal method and membrane method. Among them, the low-temperature multi-effect an...

Claims

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Application Information

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IPC IPC(8): C02F1/14C02F1/04C02F103/08
CPCC02F1/04C02F1/14C02F2103/08C02F2201/009Y02A20/124Y02A20/142Y02A20/212
Inventor 刘丰华赵斌元单爱党张毅赖奕坚
Owner SHANGHAI JIAO TONG UNIV
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