A hydrate method air purification device and method

Abstract

The present application relates to air purification technical field, disclose a kind of hydrate method air purification device and method, including electromagnetic field component, filter screen, Laval nozzle and reaction component;The filter screen is arranged between electromagnetic field component and Laval nozzle, and the filter screen is installed in the end of Laval nozzle;The reaction component is communicated and is arranged in the air outlet end of Laval nozzle.The present application is accelerated by Laval nozzle, and the gas that is passed in is cooled, and get rid of the energy consumption of traditional refrigeration equipment and the problem of slow cooling speed, energy saving, while accelerating the generation of CO2 hydrate;Different particle size pollutants are purified by electromagnetic field, filter screen, water droplet and water mist attached on filter screen, and the purification effect is good;Hydrate method and Laval nozzle are added in purification method, two major elements, provide new idea for air purification;Pure CO2 and water are obtained after decomposition, and the pure CO2 of CO2 hydrate decomposition can be transported to sprinkler for recycling.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to an air purification device and method using hydrates. Background Technology

[0002] The atmosphere is an essential environmental element for human survival and development. However, with increasing population and frequent human activities, air pollution is becoming increasingly severe. Based on the pollutants and their state of existence, air pollution control technologies can be divided into two main categories: particulate matter control and gaseous pollutant control. Air pollution is one of the world's most significant environmental problems, causing significant harm to human health, industrial and agricultural production, plant and animal growth, social property, and the global environment. The increasingly deteriorating urban air quality and the emergence of global pollution have resulted in air pollution being characterized by its wide scope, severe harm, and continuous worsening. Therefore, taking a holistic approach, unified planning, and comprehensive application of various means and measures to effectively control air pollution has become an urgent matter.

[0003] Natural gas hydrates, as a novel clean energy source, are abundant in polar permafrost, marine sedimentary layers, and at the junction of land and sea. Under the same conditions, the carbon content of a given volume of natural gas hydrate is far higher than that of other fossil fuels. Therefore, natural gas hydrates have attracted worldwide attention as a potential clean energy source to replace fossil fuels. The formation of hydrates mainly involves two processes: nucleation and growth. Nucleation refers to the process by which stable hydrate nuclei, reaching a critical size, form when the solution is in a supercooled or supersaturated state. Once the nuclei reach a certain critical size, the hydrate enters a stable growth stage. The formation conditions for hydrates are quite stringent, which is a challenge for industrial applications. Experiments involving hydrate formation require a certain amount of time to cool down to meet the conditions for hydrate formation, which means that energy is needed for cooling. Summary of the Invention

[0004] The purpose of this invention is to provide an air purification device and method based on hydrates, which solves the problems of long cooling time and energy consumption in the traditional generation of hydrates.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A hydrate-based air purification device includes an electromagnetic field component, a filter, a Laval nozzle, and a reaction component;

[0007] The filter screen is disposed between the electromagnetic field assembly and the Laval nozzle, and the filter screen is installed at the end of the Laval nozzle;

[0008] The reaction assembly is connected to the air outlet end of the Laval nozzle.

[0009] Preferably, it further includes an air intake assembly, wherein the electromagnetic field assembly is disposed on the air outlet side of the air intake assembly, the electromagnetic field generated by the electromagnetic field assembly covers the air input by the air intake assembly, and the air intake assembly is installed at one end of the filter chamber.

[0010] Preferably, a buffer grid is provided in the electromagnetic field generated by the electromagnetic field component, and the gas travels through the buffer grid longer than the length of the electromagnetic field.

[0011] Preferably, a sprayer is provided between the electromagnetic field component and the filter screen, the sprayer being above the filter screen and the spraying angle of the sprayer being downward along the surface of the filter screen.

[0012] Preferably, the filter screen has a mesh size of 300-400 and is made of stainless steel.

[0013] Preferably, the electromagnetic field assembly includes a cathode plate and an anode plate, which are used to generate an electromagnetic field;

[0014] A dust hopper is provided on the air inlet side of the filter screen, below the cathode plate and the anode plate.

[0015] Preferably, the Mach number of the Laval nozzle is 1.0 to 3.5.

[0016] Preferably, the reaction assembly is provided with a decomposition assembly, and the decomposition assembly is provided with a heating assembly, which is heated by a solar panel.

[0017] Preferably, an exhaust channel and a drain pipe are provided on the decomposition component, and the sprayer is connected to the decomposition component through the drain pipe.

[0018] A hydrate-based air purification method includes the following steps:

[0019] Air is introduced into a buffer grid in an electromagnetic field, which prolongs the gas's journey through the electromagnetic field and the purification time of the electromagnetic field.

[0020] The gas, after initial purification, passes through a filter covered with atomized water vapor and water droplets for further purification and dust removal.

[0021] After being filtered, the gas is accelerated and cooled through the Laval nozzle before entering the reaction assembly, where water in the gas reacts with CO2 to form CO2 hydrate.

[0022] Preferably, the method further includes the following steps:

[0023] The CO2 hydrate generated in the reaction assembly is transported to the decomposition assembly for heating and decomposition.

[0024] The water produced by decomposition is sent to the sprayer for recycling through the drain pipe; the CO2 produced by decomposition is collected through the exhaust channel.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention accelerates and cools the introduced gas through a Laval nozzle, thus overcoming the problems of energy consumption and slow cooling speed of traditional refrigeration equipment, saving energy, and at the same time accelerating the formation of CO2 hydrates.

[0027] 2. This invention uses electromagnetic fields to initially purify the air. In the air passing through the electromagnetic field, large dust particles are removed by the filter screen and the water droplets attached to the filter screen, while fine dust particles are captured by the water mist, thus achieving the purpose of purifying pollutants of different particle sizes and having a good purification effect.

[0028] 3. The purification method of this invention incorporates two key elements: the hydrate method and the Laval nozzle, providing a new approach to air purification. After the CO2 hydrate generated by the generating component decomposes, pure CO2 and water are obtained. The pure CO2 from the decomposition of CO2 hydrate can be transported to the sprayer for recycling, realizing the reuse of water sources. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the purification device of the present invention;

[0031] Figure 2 This is a schematic diagram of the gas flow direction within the buffer grid in an embodiment of the present invention.

[0032] In the diagram: 1. Air intake assembly; 2. Power supply; 3. Cathode plate; 4. Anode plate; 5. Sprayer; 6. Filter screen; 7. Drain pipe; 8. Laval nozzle; 9. Exhaust passage; 10. Decomposition assembly; 11. Reaction assembly; 12. Air supply assembly; 13. Heating assembly; 14. Dust hopper. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Figure 1 This is a schematic diagram of the purification device. Figure 1 As shown, an air purification device using hydrates includes a filter chamber, an air inlet assembly 1, an electromagnetic field assembly, a Laval nozzle 8, a decomposition assembly 10, a reaction assembly 11, an air supply assembly 12, and a heating assembly 13.

[0035] The air intake assembly 1 is installed inside the filter chamber and is located at one end of the filter chamber. It is used to send outside air into the purification device. The electromagnetic field assembly is installed inside the filter chamber, and the air blown in from the air intake assembly 1 passes through the electromagnetic field generated by the electromagnetic field assembly.

[0036] It should be noted that, in order to ensure that all the air blown in by the air intake component 1 passes through the electromagnetic field, a channel can be set between the electromagnetic field component and the air intake component 1 to connect the two for directional airflow.

[0037] It should be noted that the electromagnetic field component can also be embedded in the inner wall of the filter chamber to form an electromagnetic field that is vertical, horizontal, or tilted, ensuring that the air blown in passes through the electromagnetic field when it flows through the filter chamber. Therefore, any inventive changes and improvements are also within the scope of protection of this invention.

[0038] The electromagnetic field assembly includes a cathode plate 3, an anode plate 4, and a power supply 2. The power supply 2 is used to supply power to the cathode plate 3 and the anode plate 4. When powered on, an electromagnetic field is generated between the cathode plate 3 and the anode plate 4. Different types of pollutants are removed by the electromagnetic field, causing the pollutant particles to be charged and deposited.

[0039] To facilitate cleaning, an automatic cleaning device can be installed on the cathode plate 3 and anode plate 4 for surface cleaning of the cathode plate 3 and anode plate 4 of the electromagnetic field assembly when they are not in operation, thereby improving the efficiency of subsequent deposition; manual cleaning can also be performed when they are not in operation.

[0040] A buffer grid is installed between the cathode plate 3 and the anode plate 4 in the electromagnetic field assembly. The buffer grid can be installed on the inner wall of the filter chamber or on the cathode plate 3 and the anode plate 4. It is necessary to ensure that all the air introduced enters the buffer grid to prolong the gas's journey in the electromagnetic field, increase the duration of the electromagnetic field, and ensure that the gas is fully purified.

[0041] The buffer grid can be composed of an array of upper barrier plates a and lower barrier plates b, such as... Figure 2 As shown, the upper barrier plate a and the lower barrier plate b are alternately distributed in the electromagnetic field. While ensuring normal airflow, the upper barrier plate a and the lower barrier plate b should ideally be relatively long to significantly increase the air travel distance between them, thereby increasing the duration of the electromagnetic field's effect and extending the time for pollutant particle charging and deposition, ultimately achieving a better deposition effect. The upper barrier plate a and the lower barrier plate b are positioned perpendicular to the cathode plate 3 and the anode plate 4 to ensure that positive and negative ions in the pollutant particles can precipitate smoothly on the cathode plate 3 and the anode plate 4. All air entering from the air intake assembly 1 passes through the channel formed by the upper barrier plate a and the lower barrier plate b.

[0042] A sprayer 5 and a filter 6 are installed on the air outlet side of the electromagnetic field. The sprayer 5 is located between the electromagnetic field component and the filter 6. The sprayer 5 can be installed on the inner wall of the filter chamber or on the fixing frame of the filter 6.

[0043] Sprayer 5 sprays water mist onto filter screen 6. Water droplets fall onto filter screen 6, covering the entire screen. The water droplets and spray mist simultaneously purify the gas treated by the electromagnetic field. Large dust particles are removed by both the water droplets and filter screen 6, while fine dust particles are captured by the water mist. Filter screen 6 has a mesh size of 300-400 and is made of either metal or plastic, with stainless steel being the preferred material. It is washable and reusable, has high air permeability, and an exceptionally long service life.

[0044] A dust hopper 14 is provided on the air inlet side of the filter 6. The dust hopper 14 is located below the cathode plate 3 and the anode plate 4. It is used to collect dust that has not been captured and pollutant particles deposited by the electromagnetic field components. The cathode plate 3 and the anode plate 4 are projected vertically into the dust hopper 14, which facilitates the collection of dust and pollutant particles and keeps the purification chamber clean.

[0045] The Laval nozzle 8 is installed on the air outlet side of the filter screen 6, and all air filtered by the filter screen 6 enters the Laval nozzle 8. The Laval nozzle 8 is made of stainless steel and is designed with a Mach number of 1.0 to 3.5.

[0046] After passing through the filter screen 6, the gas enters the Laval nozzle 8 (the front half of which narrows towards the middle to form a narrow throat, and then expands outwards from the narrow throat). The gas temperature is rapidly cooled after passing through the Laval nozzle 8, making the gas flow temperature below 5°C, thus forming a low-temperature gas.

[0047] A reaction assembly 11 is connected to the outlet side of the Laval nozzle 8. Cooled gas is introduced into the reaction assembly 11, where water and CO2 in the gas rapidly generate CO2 hydrate (solid) under low-temperature conditions. A decomposition assembly 10 is connected to the reaction assembly 11, and its connection is controlled to open and close by a telescopic plate or control valve with a drive source, reducing the risk of other gases being mixed in.

[0048] The decomposition component 10 is installed on the upper side of the reaction component 11, or it can be installed on the lower side of the reaction component 11. When the decomposition component 10 is installed on the upper side of the reaction component 11, CO2 hydrate can be transported into the decomposition component 10 by a conveying component (screw conveyor, conveyor belt or other conveyable equipment); when the decomposition component 10 is installed on the lower side of the reaction component 11, it falls into the decomposition component 10 by its own gravity.

[0049] The decomposition component 10 is equipped with a heating component 13. The heating component 13 converts solar energy into heat energy through a solar panel to heat the CO2 hydrate inside the decomposition component 10. After heating, the CO2 hydrate decomposes rapidly to produce pure CO2 and water.

[0050] An exhaust channel 9 and a drain pipe 7 are provided on the decomposition component 10. One end of the drain pipe 7 is connected to the decomposition component 10, and the other end is connected to the sprayer 5. The drain pipe 7 is used to transport the decomposed water in the decomposition component 10 to the sprayer 5 for recycling. CO2 in the decomposition component 10 is discharged through the exhaust channel 9 and then collected.

[0051] It should be noted that CO2 hydrates are decomposed within the decomposition component 10. To avoid insufficient water supply to the sprayer 5 due to untimely decomposition of CO2 hydrates and other decomposition processes, an external water inlet pipe can be added to the sprayer 5, and a flow valve can be installed on the drain pipe 7. When the value of the flow valve per unit time is less than the set threshold, water is supplemented through the external water inlet pipe to ensure sufficient water supply to the sprayer 5. When the value of the flow valve per unit time is higher than the set threshold, the external water inlet pipe stops supplying water, and only the water required by the sprayer 5 is supplied through the drain pipe 7.

[0052] The air supply assembly 12 is connected to the reaction assembly 11 and is used to send out, collect, enter the next process or exhaust the gas that has not participated in the reaction in the reaction assembly 11 to the outside.

[0053] The hydrate-based air purification method includes the following steps:

[0054] Air enters through the air intake assembly 1, passes through the channel into the electromagnetic field assembly and the buffer grid, and the power supply 2 simultaneously powers the cathode plate 3 and the anode plate 4 to generate an electromagnetic field to remove suspended particles in the air. The preliminarily purified gas passes through the filter screen 6. At this time, the sprayer 5 sprays water onto the filter screen 6, causing water droplets to adhere to the filter screen 6 and removing some larger dust particles. At the same time, the water mist generated can remove smaller dust particles. The dust hopper 14 is used to collect the dust that falls during this process and the particulate pollutants deposited by the charged electromagnetic assembly.

[0055] Then the gas enters the Laval nozzle 8, and the temperature drops sharply to about 5°C. The gas cools down rapidly and enters the reaction assembly 11. After the temperature drops, CO2 and water in the air form CO2 hydrate.

[0056] The generated CO2 hydrate is fed into the decomposition component 10 through the transmission component. The connection between the decomposition component 10 and the reaction component 11 is closed. The heating component 13 converts solar energy from the solar panel into thermal energy to provide thermal energy to the decomposition component 10, so that the CO2 hydrate is decomposed quickly to produce pure CO2 and water. The pure CO2 is recycled and reused, and the pure water is fed into the sprayer 5 through the drain pipe 7 to realize the reuse of resources.

[0057] Unreacted gases in the reaction assembly 11 are discharged outdoors through the air supply assembly 12, achieving the purpose of air purification.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A hydrate method air purification device, characterized by, It includes an electromagnetic field assembly, a filter (6), a Laval nozzle (8), and a reaction assembly (11); The filter (6) is disposed between the electromagnetic field assembly and the Laval nozzle (8), and the filter (6) is installed at the end of the Laval nozzle (8); The reaction assembly (11) is connected to the air outlet end of the Laval nozzle (8); It also includes an air intake assembly (1), the electromagnetic field assembly is set on the air outlet side of the air intake assembly (1), the electromagnetic field generated by the electromagnetic field assembly covers the air input by the air intake assembly (1), the air intake assembly (1) is installed at one end of the filter chamber; a buffer grid is set in the electromagnetic field generated by the electromagnetic field assembly, the gas travels through the buffer grid longer than the length of the electromagnetic field; a sprayer (5) is set between the electromagnetic field assembly and the filter screen (6), the sprayer (5) is on the upper side of the filter screen (6), and the spray angle of the sprayer (5) is downward along the surface of the filter screen (6); The reaction assembly (11) is provided with a decomposition assembly (10), and a heating assembly (13) is provided inside the decomposition assembly (10). The heating assembly (13) is heated by a solar panel. An exhaust channel (9) and a drain pipe (7) are provided on the decomposition assembly (10). The sprayer (5) is connected to the decomposition assembly (10) through the drain pipe (7).

2. The hydrate-based air purification device according to claim 1, characterized in that, The filter screen (6) has a mesh size of 300-400 and is made of stainless steel.

3. A hydrate-based air purification device according to claim 1 or 2, characterized in that, The electromagnetic field assembly includes a cathode plate (3) and an anode plate (4), which are used to generate an electromagnetic field; A dust hopper (14) is provided on the air inlet side of the filter (6), and the dust hopper (14) is below the cathode plate (3) and the anode plate (4).

4. A hydrate-based air purification device according to claim 1 or 2, characterized in that, The Mach number of the Laval nozzle (8) is 1.0 to 3.

5.

5. A hydrate-based air purification method, characterized in that, The air purification device based on the hydrate method according to any one of claims 1-4 includes the following steps: air is introduced into a buffer grid in an electromagnetic field for preliminary purification; The gas, after initial purification, passes through a filter (6) covered with atomized water vapor and water droplets for further purification and dust removal; After being filtered by the filter screen (6), the gas is accelerated and cooled by the Laval nozzle (8) and enters the reaction assembly (11). The water in the gas reacts with CO2 to form CO2 hydrate.

6. The air purification method using hydrates according to claim 5, characterized in that, The process also includes the following steps: CO2 hydrate generated in the reaction assembly (11) is transported to the decomposition assembly (10) for heating and decomposition; The water produced by decomposition is sent to the sprayer (5) through the drain pipe (7) for recycling; the CO2 produced by decomposition is collected through the exhaust channel (9).

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