Solid waste mineralization device capable of generating fine bubbles

Abstract

The utility model belongs to the technical field of solid waste treatment, and relates to a solid waste mineralization device for generating micro bubbles, which comprises a base, a cylindrical container, a liquid inlet pipe, a circulating pipe, a slurry booster pump, a gas delivery pipe, a gas ejector and a turbulent flow plate, the cylindrical container and the slurry booster pump are installed on the base, the gas inlet pipe is arranged at the bottom of the cylindrical container, the gas inlet pipe is communicated with the gas injector and used for inputting high-pressure carbon dioxide gas, the gas injector is arranged in the center of an inner cavity of the cylindrical container, and the slurry booster pump is arranged in the cylindrical container. The turbulent flow plate is vertically arranged and radially mounted on the inner side wall of the cylindrical container, and the liquid inlet pipe is arranged at the lower part of the cylindrical container along the tangential direction and is communicated with an inner cavity of the cylindrical container. The device has the advantages that carbon dioxide can be fully mixed, so that the carbon dioxide can be quickly and effectively dissolved in slurry; and the fineness of the carbonized product can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste treatment and relates to a solid waste mineralization device for generating fine bubbles. Background Art

[0002] Using solid waste such as steel slag as admixture for concrete is an effective way to recycle solid waste. However, if it is directly added, it will have an adverse effect on concrete due to the properties of the solid waste itself. Generally, it is necessary to mineralize these solid wastes rich in calcium and magnesium so that the solid waste can absorb carbon dioxide and transform it, thereby reducing its adverse effect on the performance of concrete as an admixture.

[0003] In the current technology for mineralization (also known as carbonization reaction) of solid waste, how to effectively improve the mineralization efficiency is a difficult point. Since the mineralization process requires the participation of water, a commonly used method is to perform preliminary treatment on the solid waste (such as crushing and cleaning), mix the solid waste with water by stirring, and then introduce carbon dioxide into it. However, if carbon dioxide is introduced directly, the carbon dioxide has a limited contact area with the solid waste at various locations due to the single entry channel, so the efficiency of the carbonization reaction is not high. Although stirring can allow the solid waste particles to be fully mixed with water to form a slurry, and also helps carbon dioxide to contact with solid waste at various locations, the carbon dioxide bubbles formed after the gas is directly introduced are larger, and they are easy to float up and leave the liquid surface quickly during the stirring process. This results in the carbon dioxide that is actually effectively dissolved in the slurry still being very low, reducing the efficiency of the carbonization reaction. Utility Model Content

[0004] The purpose of the utility model is to provide a solid waste mineralization device for generating fine bubbles, so as to solve the technical problem of low mineralization efficiency when mineralizing solid waste in the prior art.

[0005] The solid waste mineralization device for generating fine bubbles comprises a base, a cylindrical container, a liquid inlet pipe, a circulation pipe, a slurry booster pump, an air supply pipe, a gas injector and a turbulence plate; the cylindrical container and the slurry booster pump are installed on the base, the air supply pipe is provided at the bottom of the cylindrical container, the air supply pipe is connected to the gas injector for inputting high-pressure carbon dioxide gas, the gas injector is arranged at the center of the inner cavity of the cylindrical container and is used to spray gas uniformly to all sides, the turbulence plate is upright and radially installed on the inner side wall of the cylindrical container, the liquid inlet pipe is arranged tangentially at the lower part of the cylindrical container and is connected to the inner cavity of the cylindrical container, one end of the circulation pipe is connected to the upper part of the cylindrical container and the other end is connected to the inlet of the slurry booster pump, the outlet of the slurry booster pump is connected to the liquid inlet pipe, and the inlet height of the circulation pipe is lower than the liquid level in the cylindrical container.

[0006] Preferably, there are several turbulence plates which are evenly arranged around the center of the cylindrical container, and a number of turbulence holes are evenly arranged on the turbulence plates.

[0007] Preferably, the outer side edge of the turbulence plate is connected to the inner side wall of the cylindrical container through a mounting member, and there is a gap between the turbulence plate and the inner side wall of the cylindrical container.

[0008] Preferably, the solid waste mineralization device further includes an ultrasonic generator and an ultrasonic vibrator. The ultrasonic vibrator is arranged on the inner side wall of the cylindrical container, and the ultrasonic generator is electrically connected to the ultrasonic vibrator.

[0009] Preferably, the ultrasonic generator is installed in the bottom cavity, and the ultrasonic vibrator is arranged at the gap between the outer side edge of the turbulence plate and the inner side wall of the cylindrical container.

[0010] Preferably, the gas injector is a tubular structure with a closed top, and a number of spray holes are evenly distributed on its periphery.

[0011] Preferably, the bottom of the gas injector is provided with a bottom inlet. A bottom partition is horizontally installed in the lower part of the cylindrical container. The bottom partition divides the inside of the cylindrical container into a slurry chamber and a bottom cavity from top to bottom, and the liquid inlet pipe is arranged above the bottom partition.

[0012] The utility model has the following advantages: The utility model uniformly fills carbon dioxide into the slurry and converts it into microbubbles, so that carbon dioxide is fully mixed with the slurry of mixed solid waste. Microbubbles refer to microbubbles or nanobubbles with a bubble diameter of about 100 μm or less (with a diameter of about 50 - 500 nm), which can effectively accelerate the dissolution of carbon dioxide and accelerate the transfer of carbonate ions to the surface of solid waste for carbonization reaction. Compared with the conventional aeration method, the microbubbles formed by carbon dioxide have the advantages of slow bubble rising speed and sufficient mixing of carbon dioxide, which can quickly and effectively dissolve in the slurry; this method can also cause intense agitation and shearing action in this area of the slurry, intensify the collision of solid waste particles and ion dissolution, which can hinder the growth of calcium carbonate crystals of the carbonization reaction product, avoid the accumulation and coating of the carbonization product on the surface of solid waste, and effectively improve the fineness and carbonization degree of the carbonization product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a solid waste mineralization device for generating microbubbles according to the utility model.

[0014] Figure 2 is Figure 1 a top view of the structure shown.

[0015] Figure 3 is Figure 1Schematic diagram of the structure inside the cylindrical container in the shown structure.

[0016] The reference numerals in the drawings are as follows: 1, base; 2, cylindrical container; 3, slurry booster pump; 4, circulation pipe; 5, liquid inlet pipe; 6, gas transmission pipe; 7, gas injector; 8, turbulence plate; 9, bottom partition; 10, ultrasonic generator; 11, ultrasonic vibrator. Specific implementation mode

[0017] The following is a further detailed description of the specific implementation mode of the present utility model by describing the embodiments with reference to the drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present utility model.

[0018] As Figures 1-3 As shown, the present utility model provides a solid waste mineralization device for generating microbubbles, including a base 1, a cylindrical container 2, a liquid inlet pipe 5, a circulation pipe 4, a slurry booster pump 3, a gas transmission pipe 6, a gas injector 7 and a turbulence plate 8; the cylindrical container 2 and the slurry booster pump 3 are installed on the base 1, the bottom of the cylindrical container 2 is provided with the inlet pipe, and the inlet pipe is communicated with the gas injector 7 for inputting high-pressure carbon dioxide gas. The gas injector 7 is arranged at the center of the inner cavity of the cylindrical container 2 and is used for evenly spraying gas around. The turbulence plate 8 is vertically arranged and radially installed on the inner side wall of the cylindrical container 2. The liquid inlet pipe 5 is tangentially arranged at the lower part of the cylindrical container 2 and is communicated with the inner cavity of the cylindrical container 2. One end of the circulation pipe 4 is connected to the upper part of the cylindrical container 2 and the other end is communicated with the inlet of the slurry booster pump 3. The outlet of the slurry booster pump 3 is communicated with the liquid inlet pipe 5, and the inlet height of the circulation pipe 4 is lower than the liquid level height in the cylindrical container 2.

[0019] There are several turbulence plates 8 and they are evenly arranged around the center of the cylindrical container 2. The turbulence plates 8 are evenly provided with a number of turbulence holes, and the diameter range of the turbulence holes is 0.5 mm to 2 mm. When the sprayed carbon dioxide bubbles flow through the turbulence plate 8 with the slurry swirling, they will be disturbed by the turbulence holes and further broken into microbubbles under the vibration action of the turbulence plate 8.

[0020] The outer side edge of the turbulence plate 8 is connected to the inner side wall of the cylindrical container 2 through a mounting member, and there is a certain gap between the turbulence plate 8 and the inner side wall of the cylindrical container 2. This facilitates the loading and unloading of the turbulence plate 8, is convenient for maintenance and replacement; and also enables the turbulence plate 8 to achieve better elastic vibration.

[0021] The gas injector 7 is a tubular structure with a closed top. A number of spray holes are evenly distributed on the periphery of the gas injector 7, and the diameter of the spray holes is about 0.5 mm. In this way, carbon dioxide is evenly sprayed into the slurry in the form of finer bubbles in all directions, which is conducive to the mixing of carbon dioxide gas and the slurry and controls the initial bubble size, facilitating the more efficient generation of microbubbles.

[0022] A bottom inlet is provided at the bottom of the gas injector 7. A bottom partition 9 is horizontally installed in the lower part of the cylindrical container 2. The bottom partition 9 divides the interior of the cylindrical container 2 into a slurry chamber and a bottom cavity from top to bottom. The liquid inlet pipe 5 is arranged above the bottom partition 9. The bottom inlet is installed on the bottom partition 9, and one end of the gas inlet pipe extends into the bottom cavity and leads upward into the bottom inlet. This facilitates the installation and air intake of the gas injector 7 and also avoids the influence of the gas inlet pipe on the slurry swirl.

[0023] The solid waste mineralization device further includes an ultrasonic generator 10 and an ultrasonic vibrator 11. The ultrasonic vibrator 11 is arranged on the inner side wall of the cylindrical container 2, and the ultrasonic generator 10 is electrically connected to the ultrasonic vibrator 11. The ultrasonic vibration generated by the ultrasonic vibrator 11 can help the bubbles to be further broken and split into microbubbles, improving the generation efficiency of microbubbles. The ultrasonic generator 10 is installed in the bottom cavity, and the ultrasonic vibrator 11 is arranged at the gap between the outer side edge of the turbulence plate 8 and the inner side wall of the cylindrical container 2. This can concentrate the ultrasonic vibration and the vibration of the turbulence plate 8 in one place. Through the combined action of the turbulence plate 8 and the ultrasonic, the size of the carbon dioxide bubbles is reduced, thereby slowing down the rise of the bubbles in the liquid, accelerating the dissolution of carbon dioxide, ensuring the full absorption of carbon dioxide, and improving the carbon capture efficiency.

[0024] The working process and advantages of the present utility model are as follows: The slurry booster pump 3 takes in liquid from the upper part of the cylindrical container 2, and after boosting the pressure, fills the slurry into the lower part of the cylindrical container 2 at a high speed. The slurry forms a swirling upward movement along the inner cavity of the cylindrical container 2. After the slurry swirls through the turbulence plate 8, it is disturbed by the turbulence plate 8, thus realizing the stirring and flowing of the slurry. At the same time, carbon dioxide gas with a certain pressure enters the gas injector 7 from the inlet pipe, and under the action of pressure, it quickly sprays out from the spray holes on the periphery of the gas injector 7. Due to the limitation of the spray hole diameter, the carbon dioxide will form many small-diameter bubbles and radially spray to the periphery of the container, and then flow along with the slurry swirl and form fine bubbles under the action of the turbulence plate 8. At the same time, the ultrasonic oscillator 11 emits ultrasonic waves, further promoting the fragmentation and refinement of the bubbles. During the use process, a small amount of surfactant can be added to adjust the surface tension of the liquid phase, control the size of the fine bubbles, and accelerate the carbonization reaction. During the operation process, a certain crystal form control agent can also be added to regulate the particle size and crystal form of the calcium carbonate product; on the other hand, the particle size of the calcium carbonate product can also be controlled by adjusting the ultrasonic frequency and amplitude, which is beneficial to particle refinement and improving the carbonization degree and efficiency.

[0025] The present utility model has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various non-substantial improvements are made by adopting the inventive concept and technical solution of the present utility model, or the inventive concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A solid waste mineralization device for generating microbubbles, characterized in that: It includes a base (1), a cylindrical container (2), a liquid inlet pipe (5), a circulation pipe (4), a slurry booster pump (3), a gas transmission pipe (6), a gas injector (7), and a turbulence plate (8); the cylindrical container (2) and the slurry booster pump (3) are installed on the base (1), the bottom of the cylindrical container (2) is provided with the gas transmission pipe (6), the gas transmission pipe (6) is connected to the gas injector (7) for inputting high-pressure carbon dioxide gas, the gas injector (7) is arranged at the center of the inner cavity of the cylindrical container (2) and is used for evenly spraying gas around, the turbulence plate (8) is vertically arranged and radially installed on the inner side wall of the cylindrical container (2), the liquid inlet pipe (5) is arranged tangentially at the lower part of the cylindrical container (2) and is communicated with the inner cavity of the cylindrical container (2), one end of the circulation pipe (4) is connected to the upper part of the cylindrical container (2) and the other end is communicated with the inlet of the slurry booster pump (3), the outlet of the slurry booster pump (3) is communicated with the liquid inlet pipe (5), and the inlet height of the circulation pipe (4) is lower than the liquid level height in the cylindrical container (2).

2. The solid waste mineralization device for generating microbubbles according to claim 1, characterized in that: There are several pieces of the turbulence plate (8) and they are evenly arranged around the center of the cylindrical container (2), and several turbulence holes are evenly arranged on the turbulence plate (8).

3. The solid waste mineralization device for generating microbubbles according to claim 1, characterized in that: The outer side edge of the turbulence plate (8) is connected to the inner side wall of the cylindrical container (2) through a mounting member, and there is a gap between the turbulence plate (8) and the inner side wall of the cylindrical container (2).

4. A solid waste mineralization device for generating microbubbles according to claim 1, characterized in that: The solid waste mineralization device further includes an ultrasonic generator (10) and an ultrasonic vibrator (11), the ultrasonic vibrator (11) is arranged on the inner side wall of the cylindrical container (2), and the ultrasonic generator (10) is electrically connected to the ultrasonic vibrator (11).

5. The solid waste mineralization device for generating microbubbles according to claim 4, wherein: The ultrasonic generator (10) is installed in the bottom cavity, and the ultrasonic vibrator (11) is arranged at the gap between the outer side edge of the turbulence plate (8) and the inner side wall of the cylindrical container (2).

6. The solid waste mineralization device for generating microbubbles according to claim 1, characterized in that: The gas injector (7) is a tubular structure with a closed top, and several spray holes are evenly arranged on the periphery of the gas injector (7).

7. The solid waste mineralization device for generating microbubbles according to claim 1, characterized in that: The bottom of the gas injector (7) is provided with a bottom inlet, a bottom partition plate (9) is horizontally installed in the lower part of the cylindrical container (2), the bottom partition plate (9) divides the inside of the cylindrical container (2) into a slurry chamber and a bottom cavity from top to bottom, and the liquid inlet pipe (5) is arranged above the bottom partition plate (9).

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