CN114604918B - Distillation assembly for reducing phenol entering desalted water by using super-hydrophilic honeycomb activated carbon - Google Patents
Distillation assembly for reducing phenol entering desalted water by using super-hydrophilic honeycomb activated carbon Download PDFInfo
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- CN114604918B CN114604918B CN202210270746.9A CN202210270746A CN114604918B CN 114604918 B CN114604918 B CN 114604918B CN 202210270746 A CN202210270746 A CN 202210270746A CN 114604918 B CN114604918 B CN 114604918B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 238000004821 distillation Methods 0.000 title claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000013535 sea water Substances 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 230000008020 evaporation Effects 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 239000012774 insulation material Substances 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims description 17
- 238000010612 desalination reaction Methods 0.000 claims description 11
- 239000006260 foam Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 claims description 10
- 239000006229 carbon black Substances 0.000 claims description 10
- 238000005185 salting out Methods 0.000 claims description 10
- 239000002041 carbon nanotube Substances 0.000 claims description 8
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 8
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 239000002957 persistent organic pollutant Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000007777 multifunctional material Substances 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000003575 carbonaceous material Substances 0.000 claims 1
- 238000009938 salting Methods 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 235000002639 sodium chloride Nutrition 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000002207 thermal evaporation Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- -1 phenol compound Chemical class 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Abstract
The application discloses a distillation component for reducing phenol entering desalted water by using super-hydrophilic honeycomb activated carbon, which comprises honeycomb activated carbon, a photo-thermal film covered on one side surface of the honeycomb activated carbon with pore channels, and a heat insulation material wrapped around the honeycomb activated carbon, wherein the photo-thermal film is obtained by adsorbing photo-thermal material on dust-free paper. The integrated component can efficiently absorb solar energy by adopting different photo-thermal conversion materials and prevent heat from diffusing to the bottom seawater by wrapping the heat insulation materials, so that the photo-thermal conversion efficiency is greatly improved. The assembly can continuously absorb and convey seawater and ensure the evaporation rate.
Description
Technical Field
The application belongs to the field of drinking water treatment, and particularly relates to a distillation assembly for improving the evaporation rate of photo-thermal distilled seawater by using super-hydrophilic honeycomb active carbon and synchronously reducing phenol entering desalted water.
Background
Desalination of sea water is considered to be the most promising way to solve the island water supply problem. In the current sea water desalination process, reverse osmosis and multi-effect distillation become the most mainstream sea water desalination technology at present, but the current desalination technology is not applicable to remote island areas with energy shortage and limited physical conditions. The thermal method represented by multi-effect distillation requires a large amount of seawater circulation, and has high energy consumption and high cost; the membrane method represented by reverse osmosis has strict requirements on the quality of the inlet water, and has the problems of membrane pollution and high electric energy consumption. Therefore, green pollution-free sea water desalination technology using solar energy has been developed. Because water evaporation only occurs in a thin water layer where liquid and air contact, based on this principle, solar photo-thermal distillation sea water desalination technology based on gas-liquid interface heating has been proposed in recent years. The technology concentrates energy at a gas-liquid interface, reduces heat energy conduction to bulk liquid, and realizes rapid water heating and vaporization of the sea water on the surface under standard solar illumination.
In the process of photo-thermal distillation sea water desalination, a high-temperature high-salt illumination environment is formed on the surface of a distillation assembly, and the precipitated sea salt can reduce the evaporation rate of sea water and even damage the distillation assembly; the high temperature volatilizes organic pollutants in the seawater, particularly volatile phenolic substances, into the condensed and desalinated water, thereby causing the water quality safety risk. In particular, the index of volatile phenol in the seawater quality in China is seriously exceeded, and the maximum concentration reaches 0.0059mg/L. Therefore, the problems of salting out of the distillation assembly and synchronously removing volatile phenol to ensure the water quality safety of the condensed and desalted water are the problems to be solved in the application of the sea water desalination photo-thermal distillation technology.
Disclosure of Invention
Aiming at the technical problems in the prior art, the application provides a method for improving the evaporation rate of photo-thermal distilled seawater by using super-hydrophilic honeycomb active carbon and synchronously reducing the entry of phenol into desalinated water.
In a first aspect, the application provides an integrated distillation assembly, which comprises honeycomb activated carbon, a photo-thermal film covered on one side surface of the honeycomb activated carbon with pore channels, and a heat insulation material wrapped around the honeycomb activated carbon, wherein the photo-thermal film is obtained by adsorbing photo-thermal material on dust-free paper.
As a further improvement, the photo-thermal material is carbon black, graphene, disulfide, or carbon nanotubes.
As a further improvement, the disulfide is MoS 2 。
As a further development, the insulating material is an expanded foam.
As a further improvement, the photo-thermal material is attached to the dust-free paper by suction filtration.
In a second aspect, the present application provides a distillation apparatus comprising an integrated distillation assembly as described above.
In a third aspect, the present application provides a method for preparing the integrated distillation assembly, comprising: step 1): dispersing the photothermal material in water for ultrasonic dispersion to obtain turbid liquid, and step 2): adsorbing the turbid liquid on dust-free paper through vacuum suction filtration to form a photo-thermal film, and the step 3): and cutting the photo-thermal film, covering the upper surface of the honeycomb activated carbon with pore channels, and then wrapping the periphery of the honeycomb activated carbon with a heat insulation material to obtain the integrated distillation assembly.
As a further improvement, the photo-thermal material is carbon black, graphene, disulfide, or carbon nanotubes.
In a fourth aspect, the application provides an application of the integrated distillation assembly in synchronously improving the evaporation rate of photo-thermal distilled seawater and reducing the volatilization of seawater phenol into condensed and desalinated water.
As a further improvement scheme, when the integrated distillation assembly performs photo-thermal distillation on seawater, the immersed seawater level height is a middle water level, and the middle water level is the middle position of the honeycomb activated carbon of the integrated distillation assembly.
The present application is described in further detail below:
the application utilizes super-hydrophilic honeycomb activated carbon as a multifunctional material for seawater transportation, salting-out resistance and phenol adsorption removal, and assembles the multifunctional material, a photo-thermal material (carbon black, graphene and disulfide) and a heat insulation material (expansion foam) into an integrated distillation assembly for synchronously improving the evaporation rate of photo-thermal distillation seawater and reducing the volatilization of seawater phenol into condensation desalinated water, thereby ensuring dual safety of the quality and the quantity of the photo-thermal distillation seawater desalinated water.
The multifunctional material with super hydrophilicity and excellent adsorption performance, honeycomb active carbon, is used as sea water conveying and phenol adsorption and removal integrated material, and is assembled with photo-thermal material (carbon black, carbon nanotube, disulfide) and heat insulating material (expanded foam) to form the distillation component integrating photo-thermal conversion, sea water conveying, salting-resisting, phenol adsorption and removal and heat insulation. The assembly is placed in seawater and the surface seawater is heated by broad spectrum solar absorption with different photothermal materials (i.e. photothermal conversion materials), and thermal insulation materials (expanded foam) are used to reduce heat conduction downwards in order to concentrate heat at the surface. The super-hydrophilicity of the multifunctional honeycomb activated carbon ensures that the seawater is conveyed into the distillation assembly, and volatile organic pollutants in the seawater are removed by high specific surface area adsorption while the seawater is conveyed. In the sea water evaporation and desalination process, the pore canal of the honeycomb activated carbon is used as a salt drainage channel, so that the fluid convection is enhanced, the salting-out resistance is realized, and the long-term stable operation can be satisfied. The assembly schematic diagram of the photo-thermal conversion-seawater transportation-salting-phenol adsorption removal-heat insulation integrated distillation assembly is shown in figure 1.
Compared with the prior art, the application has the beneficial effects that:
(1) The material combining the water delivery channel and the adsorption technology is used for controlling the quality of the photo-thermal distillation seawater desalination, and the removal of organic pollutants in the seawater is not reported yet.
(2) No physical cleaning or hydrophobic design is needed, and no report is made on the distillation component for realizing salting-out resistance by means of the characteristics of the material.
(3) The integrated component can efficiently absorb solar energy by adopting different photo-thermal conversion materials and prevent heat from diffusing to the bottom seawater by wrapping the heat insulation materials, so that the photo-thermal conversion efficiency is greatly improved. The assembly can continuously absorb and convey seawater and ensure the evaporation rate.
(4) The integrated distillation component utilizes the honeycomb activated carbon produced commercially, has high efficiency of removing volatile organic pollutants in seawater for a long time, low operation cost, and strong durability, and is nontoxic and harmless to the material, thereby ensuring the possibility of the component for desalting the seawater in the remote islands.
Drawings
Figure 1 is a schematic diagram of the assembly of a photo-thermal conversion-seawater transportation-salting-phenol adsorption removal-heat insulation integrated distillation assembly,
figure 2 is a honeycomb activated carbon contact angle experiment,
figure 3 is a graph of water evaporation rates for different photothermal conversion material assemblies based on honeycomb activated carbon,
figure 4 is the effect of honeycomb activated carbon channels on salting out,
figure 5 is a graph of different photo-thermal evaporation surface water evaporation rates based on honeycomb activated carbon,
figure 6 is a graph of the water evaporation rate for the various water immersion height assemblies based on honeycomb activated carbon,
FIG. 7 is a graph showing the concentration of condensed desalinated water phenol obtained by distilling a phenol solution with a "contaminant adsorption removal-water channel-photothermal conversion-salt resistance" integrated honeycomb activated carbon distillation module.
Detailed Description
The embodiment provides an integrated distillation assembly, as shown in fig. 1, comprising honeycomb activated carbon, a photo-thermal film covered on one side surface of the honeycomb activated carbon with pore channels, and a heat insulation material wrapped around the honeycomb activated carbon, wherein the photo-thermal film is obtained by adsorbing the photo-thermal material on dust-free paper through vacuum filtration.
In some embodiments, the photothermal material is carbon black, graphene, disulfide, carbon nanotubes, e.g., the disulfide is MoS 2 . In some embodiments, the insulating material is an expanded foam (insulating foam).
The embodiment also provides a distillation device, which comprises the integrated distillation assembly of the embodiment.
The embodiment also provides a preparation method of the integrated distillation assembly, which comprises the following steps: step 1): dispersing the photothermal material in water for ultrasonic dispersion to obtain turbid liquid, and step 2): adsorbing the turbid liquid on dust-free paper through vacuum suction filtration to form a photo-thermal film, cutting the photo-thermal film, covering the photo-thermal film on the upper surface of the honeycomb activated carbon with pore channels, and wrapping the periphery of the honeycomb activated carbon with a heat insulation material to obtain the photo-thermal conversion-seawater conveying-salting-resisting-phenol adsorption removal-heat insulation integrated distillation assembly (the integrated distillation assembly for short).
In some embodiments, the integrated distillation assembly may be used to simultaneously increase the rate of evaporation of photo-thermal distilled seawater and reduce the volatilization of seawater phenol into the condensed desalinated water. In some embodiments, when the integrated distillation assembly performs photo-thermal distillation of seawater, the immersed seawater level is a middle water level, and the middle water level is the middle position of the honeycomb activated carbon of the integrated distillation assembly.
Firstly, in order to verify the water absorption effect of the honeycomb activated carbon as a water delivery material, a contact angle experiment is adopted to examine the hydrophilicity of the honeycomb activated carbon. As shown in fig. 2, the water droplets are rapidly absorbed within 2s, indicating that the honeycomb activated carbon has super-hydrophilicity.
Example 1
50mg of MoS 2 The powder was dispersed in 50mL deionized water and sonicated for 30min to uniformly disperse the powder. Filtering the turbid liquid to white dust-free paper by vacuum filtration to form a film with a diameter of about 4cm, and drying in air to obtain MoS 2 Photo-thermal conversion film (carbon black photo-thermal conversion film and carbon nanotube photo-thermal conversion film were also produced in the same manner). The prepared photo-thermal conversion film is respectively covered on the upper surface of a honeycomb activated carbon with the diameter of 4cm, the aperture of 1.5mm and the height of 10cm and provided with a pore canal, foam heat insulation is wrapped around the honeycomb activated carbon (the upper surface and the lower surface of the honeycomb activated carbon are not wrapped with foam heat insulation, and the other sides are wrapped with foam heat insulation), so that the photo-thermal conversion-seawater conveying-salting-resisting-phenol adsorption removal-heat insulation integrated distillation assembly is obtained. The water evaporation experiments were performed under the same conditions using 3.5% nacl solution as a water source, and the water evaporation rate results are shown in fig. 3. In fig. 3, a: a carbon nanotube photothermal conversion film; b: moS (MoS) 2 A photothermal conversion film; c: carbon black light-heat conversion film. As can be seen from FIG. 3, the water evaporation rate of the integrated distillation module prepared by using the three photo-thermal materials is 1.1kg.m -2 .h -1 The water evaporation rate of the distillation assembly in the prior art is 0.8kg.m -2 .h -1 Therefore, the integrated distillation assembly prepared by the preparation method can improve the evaporation rate of photo-thermal distilled seawater.
As shown in fig. 4, the influence of the pore canal of the honeycomb activated carbon on salting out is explored, the honeycomb activated carbon is used as a photo-thermal conversion material, the non-porous side and the pore canal side of the honeycomb activated carbon are used as photo-thermal evaporation surfaces under the same working conditions of 3.5% NaCl solution as a water source and sun illumination, and a water evaporation experiment is carried out as shown in fig. 4 (in fig. 4, the honeycomb activated carbon is used as the photo-thermal conversion material, foam is wrapped around for heat insulation, so as to obtain a distillation assembly, and the water evaporation experiment is carried out). After 4 hours, the pore-free side of the honeycomb activated carbon is used as the surface of the photo-thermal evaporation surface for salting out, and the pore channel side of the honeycomb activated carbon is used as the surface of the photo-thermal evaporation surface for salting out, so thatThe open honeycomb activated carbon pore canal has the function of salt resistance. In fig. 4, fig. 4a: the non-porous side of the honeycomb activated carbon is a photo-thermal evaporation surface, and the upper left area is salted out; fig. 4b: the porous side of the honeycomb activated carbon is a photo-thermal evaporation surface, and no salt is separated out. The different photo-thermal evaporation surface water evaporation rates based on honeycomb activated carbon are shown in fig. 5. As can be seen from FIG. 5, the evaporation rate of water was 0.9kg.m for both the non-porous side and the porous side of the honeycomb activated carbon -2 .h -1 Above, the honeycomb activated carbon itself increases the rate of water evaporation as an important component of the distillation assembly beyond the existing level.
As shown in fig. 6, the water evaporation rate based on the honeycomb activated carbon photo-thermal distillation assembly is optimized, and after the pores in the material are filled with water, the water absorption height influences the water supply effect, the water evaporation experiment is performed by respectively immersing the honeycomb activated carbon distillation assembly into three water levels of high water level, medium water level and low water level under the conditions of 3.5% NaCl solution as a water source, solar illumination and the same working condition. From the results of fig. 6, it is shown that too high or too low a water level affects the evaporation effect.
As shown in fig. 7, the "photothermal conversion-seawater transport-anti-salting-phenol adsorption removal-heat insulation" integrated distillation module with the surface covered with the carbon black photothermal conversion film was placed in a condensing apparatus. The phenol compound has higher volatility and condensation property, so that the pollution potential to distilled water is maximum. The honeycomb activated carbon distillation assembly (i.e. the integrated distillation assembly) was examined for the effectiveness of adsorbing volatile organic compounds using typical volatile phenols as model organic contaminants.
The 1mg/L phenol and 3.5% NaCl solution are used as water sources, and the assembly desalinated water is collected. The surface of the honeycomb activated carbon is free from salt precipitation after 4 hours of sun illumination, and the result of the high performance liquid chromatography in fig. 7 shows that the concentration of phenol in the obtained condensed and desalted water is far lower than that of phenol in the phenol stock solution and the condensed and desalted water collected by directly distilling phenol. In fig. 7 a: the concentration of condensed and desalted water phenol obtained by distilling phenol solution by a 'pollutant adsorption removal-water delivery channel-photo-thermal conversion-salt resistance' integrated honeycomb active carbon distillation component; b: the concentration of the original solution is 1mg/L of phenol solution.
Claims (9)
1. An integrated distillation assembly, characterized in that: the honeycomb activated carbon comprises honeycomb activated carbon, a photo-thermal film covered on one side surface of the honeycomb activated carbon with pore channels and a heat insulation material wrapped around the honeycomb activated carbon, wherein the photo-thermal film is obtained by adsorbing photo-thermal material on dust-free paper; the integrated distillation assembly is used for synchronously improving the evaporation rate of photo-thermal distilled seawater and reducing the volatilization of seawater phenol into condensed desalted water and resisting salting out, when the integrated distillation assembly is used for photo-thermal distilled seawater, the immersed seawater level height is a middle water level, and the middle water level is the middle position of the honeycomb activated carbon of the integrated distillation assembly;
the water evaporation rate of the integrated distillation component is 0.9-1.1 kg.m -2 .h -1 ；
Wherein, the carbon-based material with super hydrophilicity and excellent adsorption performance, honeycomb activated carbon, is used as a multifunctional material integrating seawater transportation and phenol adsorption removal, and is assembled with a photo-thermal material and a heat insulation material to form a distillation component integrating photo-thermal conversion, seawater transportation, salting-resistant, phenol adsorption removal and heat insulation; the super-hydrophilicity of the multifunctional honeycomb activated carbon is utilized to ensure that the seawater is conveyed into the distillation assembly, and volatile organic pollutants in the seawater are removed by high specific surface area adsorption during the seawater conveying; in the sea water evaporation and desalination process, the pore canal of the honeycomb activated carbon is used as a salt drainage channel, so that the fluid convection is enhanced, and the honeycomb activated carbon has salting-out resistance.
2. The integrated distillation assembly according to claim 1, wherein: the photo-thermal material is carbon black, graphene, disulfide and carbon nano tube.
3. The integrated distillation assembly according to claim 2, wherein: the disulfide is MoS 2 。
4. The integrated distillation assembly according to claim 1, wherein: the heat insulating material is expanded foam.
5. The integrated distillation assembly according to claim 1, wherein: the photo-thermal material is attached to dust-free paper in a suction filtration mode.
6. The method for producing an integrated distillation assembly according to any one of claims 1 to 5, wherein: comprising the following steps: step 1): dispersing the photothermal material in water for ultrasonic dispersion to obtain turbid liquid, and step 2): adsorbing the turbid liquid on dust-free paper through vacuum suction filtration to form a photo-thermal film, and the step 3): and cutting the photo-thermal film, covering the upper surface of the honeycomb activated carbon with pore channels, and then wrapping the periphery of the honeycomb activated carbon with a heat insulation material to obtain the integrated distillation assembly.
7. The method of manufacturing according to claim 6, wherein: the photo-thermal material is carbon black, graphene, disulfide and carbon nano tube.
8. Use of an integrated distillation assembly according to any one of claims 1 to 5 for simultaneously increasing the evaporation rate of photo-thermal distilled seawater and reducing the volatilization of seawater phenol into condensed desalinated water.
9. A distillation apparatus, characterized in that: an integrated distillation assembly comprising any of claims 1-5.
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| CN109592732A (en) * | 2019-01-22 | 2019-04-09 | 电子科技大学 | Solar energy effluent treatment plant and method based on low temperature pyrogenation carbon sponge |
| CN110761078A (en) * | 2019-11-11 | 2020-02-07 | 中国科学技术大学 | Preparation method and application of black body material |
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