Solar thermal membrane distillation device

A technology of distillation device and photothermal film, which is applied in general water supply saving, water/sludge/sewage treatment, water/sewage treatment, etc. It can solve the problems of bulky device, high system cost and high manufacturing cost, and achieve efficient collection , avoid membrane fouling, and solve the effect of blocking light

Pending Publication Date: 2019-08-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, existing solar membrane distillation systems often have complex structures and high manufacturing costs, such as: a solar membrane distillation device disclosed in Chinese Patent Application No. CN200520005444. The cold working medium cooling device adopts solar cooling device, and the driving device adopts solar power generation device, but the whole device is bulky and the system cost is high

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0056] Such as figure 1 , figure 2 As shown, the solar photothermal seawater desalination device provided by the present invention includes: a transparent glass plate 1, an independent photothermal evaporation material 2, a hydrophobic film 3, a water vapor channel 4, a spacer 5, a water supply tank 6, and a cold liquid tank 7. Raw water inlet 8, concentrated water outlet 9, condensed water inlet 10, condensed water outlet 11, solar battery 12, feed water pump 13, condensed water pump 14, feed water storage tank 15, condensed water storage tank 16. Wherein, the transparent glass plate 1 and the water supply tank 6 form a water supply chamber, the upper part of the water supply chamber is provided with a raw water inlet 8, and the lower part of the water supply chamber is provided with a concentrated water outlet 9. The independent photothermal evaporation material 2, the hydrophobic film 3, the water vapor channel 4 and the spacer 5 form an evaporation chamber. The lower pa...

Embodiment 2

[0073] The solar photothermal film distillation device used in this embodiment is as described in Example 1, wherein the pore diameter of the hydrophobic film 3 is 0.1 μm; the width of the water vapor channel 4 is 3 mm; the preparation method of the independent photothermal evaporation material 2 is as follows:

[0074] 1. Place nickel foam in the plasma-enhanced chemical vapor deposition reaction chamber, evacuate to <10Pa, and then heat to 700°C;

[0075] 2. Open CH 4 with H 2 Air valve, into CH 4 with H 2 mixed gas, where H 2 The flow rate is 5ml min -1 , CH 4 The flow rate is 5ml min -1 , adjust the air pressure to 50Pa;

[0076] 3. Turn on the inductively coupled plasma source, adjust the power to 250W, and maintain it for 60 minutes;

[0077] 4. Turn off the plasma source, turn off the CH 4 with H 2 Gas valve, open the Ar gas valve, pass into Ar as cooling gas, wait to be cooled to room temperature, take out the vertically oriented graphene / graphene foam;

[0...

Embodiment 3

[0081] The solar photothermal film distillation device used in this embodiment is as described in Example 1, wherein the pore diameter of the hydrophobic film 3 is 0.2 μm; the width of the water vapor channel 4 is 2 mm; the preparation method of the independent photothermal evaporation material 2 is as follows:

[0082] 1. Place nickel foam in the plasma-enhanced chemical vapor deposition reaction chamber, evacuate to <10Pa, and then heat to 650°C;

[0083] 2. Open CH 4 with H 2 Air valve, into CH 4 with H 2 mixed gas, where H 2 The flow rate is 5ml min -1 , CH 4 The flow rate is 5ml min -1 , adjust the air pressure to 400Pa;

[0084] 3. Turn on the inductively coupled plasma source, adjust the power to 250W, and maintain it for 30 minutes;

[0085] 4. Turn off the plasma source, turn off the CH 4 with H 2 Gas valve, open the Ar gas valve, pass into Ar as cooling gas, wait to be cooled to room temperature, take out the vertically oriented graphene / graphene foam;

[...

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Abstract

The invention discloses a solar thermal membrane distillation device which sequentially comprises a water supply chamber, a steam chamber and a condensate water chamber from the left to the right. Anindependent solar-thermal evaporation material, a plurality of water vapor channels and a hydrophobic membrane are sequentially arranged in the steam chamber from the left to the right; the bottom ofthe independent solar-thermal evaporation material is inserted into the water supply chamber; and water in the water supply chamber is evaporated to form steam via the steam chamber and enter the condensate water chamber. The solar thermal membrane distillation device provided by the invention has the characteristics of being simple in structure and easy to operate, membrane pollution caused by direct contact of the supplied water and the membrane is avoided, the condensate water can be efficiently collected, light blocking problems of the condensate water and the steam are solved, and the stability and solar energy utilization efficiency of the solar thermal membrane distillation system are improved.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a solar photothermal film distillation device. Background technique [0002] With climate change, population increase and economic development, the shortage and pollution of fresh water resources have become increasingly serious and become a global problem that needs to be solved urgently. Membrane distillation has recently attracted considerable attention as an efficient method for producing fresh water. Membrane distillation is a new type of membrane separation process that uses hydrophobic microporous membranes and uses the vapor pressure difference on both sides of the membrane as the driving force for mass transfer. It has the advantages of removing almost all non-volatile solutes. Solar energy is the most widely distributed and largest energy source on the earth. Because of its sustainable and green characteristics, research and industry have focused extensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44C02F1/14C02F103/08
CPCC02F1/14C02F1/447C02F2103/08Y02A20/212
Inventor 薄拯杨化超龚碧瑶
Owner ZHEJIANG UNIV
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