CN-118894568-B - Cylindrical evaporator and device integrating seawater purification, sterilization and fixed-point salt precipitation

CN118894568BCN 118894568 BCN118894568 BCN 118894568BCN-118894568-B

Abstract

The invention discloses a cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation and a device thereof, which solve the problem of lower seawater desalination efficiency due to limited evaporation area of the evaporator in the prior art, and have the beneficial effects of improving the seawater evaporation efficiency and improving the antibacterial capacity of the evaporator, and the specific scheme is as follows: the cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation comprises a cylinder, wherein a certain section of the cylinder is provided with convex parts in the circumferential direction of the cylinder, namely a cylinder with a plurality of convex cylinders, the number of angles of the convex parts of the convex cylinders is more than or equal to 3, the central line of the convex parts of the convex cylinders is arranged along the radial direction of the convex cylinders, or the convex parts of the convex cylinders are positioned in the tangential direction of the cylinder or are obliquely arranged with the side edges of the cylinder; the surface of the column body is coated with a photo-thermal material.

Inventors

YU JIAHUI
LIU SHU
LIU YUXUAN
LI LELE
LI JIYE
NING JUNYI

Assignees

山东第一医科大学(山东省医学科学院)

Dates

Publication Date: 20260508
Application Date: 20240808

Claims (8)

1. The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation is characterized by comprising a cylinder, wherein a certain section of the cylinder is provided with a plurality of convex cylinders, namely convex parts are arranged in the circumferential direction of the cylinder, the number of angles of the plurality of convex cylinders is more than or equal to 3, the central line of the convex parts of the plurality of convex cylinders is arranged along the radial direction of the plurality of convex cylinders, or the convex parts of the plurality of convex cylinders are positioned in the tangential direction of the cylinder or are obliquely arranged with the side edges of the cylinder; The surface of the cylinder is coated with a photo-thermal material; The column body is a multi-convex column body in total length, and the multi-convex column body is an oblique twelve-pointed star column body; the multi-convex column body comprises a circular column body, a plurality of convex parts are arranged on the periphery of the circular column body, and the convex parts have set lengths; The length of the convex part is 1/5-1/3 of the diameter of the circular cylinder; the width of one side of the convex part far away from the circular cylinder is smaller than or equal to the width close to the circular cylinder.
2. The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation as claimed in claim 1, wherein when the section of the multi-convex cylinder is a regular multi-convex cylinder, the convex section of the multi-convex cylinder is isosceles triangle.
3. The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt formation into a whole according to claim 1, wherein the photo-thermal material is a titanium oxide material doped with carbon-loaded nitrogen and containing oxygen vacancies.
4. The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt formation into a whole according to claim 3, wherein the preparation process of the carbon-loaded nitrogen-doped titanium oxide material containing oxygen vacancies comprises the following steps: Mixing phthalic acid, benzoic acid completely dissolved in N, N-dimethylformamide and absolute methanol, adding tetrabutyl titanate, and stirring for a set time to obtain a mixed solution; Pouring the mixed solution into a reaction container, and reacting for a set time at a set temperature to obtain a solid; and cleaning the solid, and calcining in a nitrogen atmosphere after the cleaning is finished to obtain the titanium oxide material.
5. The cylindrical evaporation device integrating seawater purification, sterilization and fixed-point salt deposition into a whole is characterized by comprising a base, wherein at least one cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt deposition into a whole is arranged in the base, the base is provided with an opening so that seawater can enter the base, the top of the base is provided with a transparent or semitransparent top cover, the top cover is detachable relative to the base, and the side part of the base is provided with a water outlet pipe communicated with the top of the base.
6. The cylindrical evaporation device integrating seawater purification, sterilization and fixed-point salt precipitation as claimed in claim 5, wherein the bottom of the base is provided with the opening; and a limiting net is arranged in the base, and limiting holes matched with the column body are formed in the limiting net.
7. The cylindrical evaporation device integrating seawater purification, sterilization and fixed-point salt precipitation into a whole according to claim 5, wherein the top of the base is provided with a first concave part and a second concave part, the first concave part is positioned outside the second concave part, the first concave part is used for being matched with the top cover, and the second concave part is communicated with the water outlet pipe; The top cover is hemispherical in shape.
8. The working method of the cylindrical evaporation device integrating seawater purification, sterilization and fixed-point salt precipitation as claimed in claim 5, which is characterized by comprising the following steps: at least one column is arranged in the base, and the interval distance between two adjacent columns is set; covering the top cover on the top of the base; adding seawater into the base; the seawater evaporates to form water vapor, the water vapor meets the top cover to realize condensation, and the condensed water flows along the direction of the top cover and is discharged through the water outlet pipe.

Description

Cylindrical evaporator and device integrating seawater purification, sterilization and fixed-point salt precipitation Technical Field The invention relates to the field of sea water desalination, in particular to a cylindrical evaporator and a device integrating sea water purification, sterilization and fixed-point salt precipitation. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. Traditional sea water desalination technologies such as reverse osmosis are effective to a certain extent in solving the problem of shortage of fresh water resources, but have the problems of high energy consumption and high maintenance cost. In contrast, solar water purification can reduce the emission of toxic byproducts (brine), and is more environment-friendly and efficient. However, the solar water purification material still has some problems in practical application. One concern that is of relatively great concern is that salt crystallization can cover the surface of the material and thus affect evaporation performance. Therefore, the realization of fixed-point salt formation is very critical. The existing fixed-point salt-forming mode is mostly realized by regulating and controlling the macroscopic shape of the evaporator, including mushroom shape, cone shape and the like, and the shape design is ingenious, but the efficiency of sea water desalination is lower due to the limitation of evaporation area and water vapor dissipation. The inventor also finds that another problem of limiting the practical application of solar seawater desalination is that the material has limited anti-biological pollution performance, and the warm environment formed around the evaporator in the solar water desalination process can promote the growth of microorganisms, generate the phenomenon of microorganism aggregation and seriously influence the service life of the evaporator. At present, the photo-thermal material prepared by mainly utilizing the antibacterial capability of graphene is used for solar seawater desalination for resisting biological pollution, but the material is difficult to manufacture, has high production cost and is not suitable for mass production. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation into a whole so as to realize the aim of high-efficiency solar seawater desalination. In order to achieve the above object, the present invention is realized by the following technical scheme: The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt precipitation comprises a cylinder, wherein a certain section or the whole length of the cylinder in the circumferential direction is provided with a plurality of convex parts, the number of angles of the convex parts of the multi-convex cylinder is more than or equal to 3, the central line of the convex parts of the multi-convex cylinder is arranged along the radial direction of the multi-convex cylinder, or the convex parts of the multi-convex cylinder are positioned in the tangential direction of the cylinder or are obliquely arranged with the side edges of the cylinder; the surface of the column body is coated with a photo-thermal material. As the cylindrical evaporator is provided with a plurality of convex cylinders, namely, the circumference of the cylinder forms a plurality of convex parts, when the cylindrical evaporator works, compared with the evaporator without the convex parts, the evaporation area is effectively increased, the corresponding evaporation flux is gradually increased, and the evaporation flux reaches the highest position at the convex parts, because the convex parts are more beneficial to the diffusion of water vapor, the positioning evaporation of the water vapor and the positioning collection of salt can be realized, and the surface of the cylinder is coated with a photo-thermal material, so that the solar light is absorbed by the evaporator, and the water evaporation, purification and sterilization processes are accelerated. The cylindrical evaporator integrating seawater purification, sterilization and fixed-point salt formation is characterized in that the cylindrical evaporator is a multi-convex cylindrical body, the multi-convex cylindrical body is an oblique dodecapointed star cylindrical body, and the evaporation area of the oblique dodecapointed star cylindrical body is further increased compared with that of a regular dodecapointed star cylindrical body on the premise that the diameters of the cylindrical bodies are the same, so that the evaporation flux is effectively improved; The multi-convex column body comprises a circular column body, a plurality of convex parts are arranged on the periphery of the circular column body, at the moment, the con