Waste gas purification device for metal silicon production

Abstract

The utility model discloses a waste gas purification device for metal silicon production, which belongs to the technical field of waste gas purification and comprises a bottom plate, a pretreatment box, a spray purification box and an adsorption purification box are sequentially mounted at the top end of the bottom plate, two sides of the spray purification box are communicated with the pretreatment box and the adsorption purification box through connecting pipes, and the spray purification box is communicated with the adsorption purification box through connecting pipes. A waste gas inlet is formed in the bottom end of one side of the pretreatment box, multiple layers of staggered flow guide plates are mounted on the inner wall of the pretreatment box, a plurality of adsorption protrusions are arranged on the surfaces of the flow guide plates, an atomization nozzle is arranged at the top end of the inner wall of the spraying purification box, and a liquid collecting groove is formed in the bottom of the inner wall of the spraying purification box; the liquid collecting tank is connected with the atomization nozzle through a first water pipe, a circulating pump is installed on the first water pipe, multiple layers of adsorption nets are arranged in the adsorption purification box, an exhaust pipe is arranged on one side of the adsorption purification box, and the device is efficient in purification, reasonable in structure, convenient and fast to maintain and high in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, and more specifically, to a waste gas purification device for the production of metallic silicon. Background Technology

[0002] In the production of silicon metal, high-temperature smelting and other processes continuously generate large quantities of complex waste gases. These waste gases not only contain fine dust particles but also harmful gases such as sulfur dioxide and nitrogen oxides, which are extremely detrimental to the ecological environment. Currently available waste gas purification devices exhibit a series of problems when dealing with these waste gases generated from silicon metal production. Some purification equipment has significant deficiencies in its dust filtration mechanism, making it difficult to completely intercept dust in the waste gas. This leads to frequent dust blockages in subsequent treatment equipment, severely affecting the operational stability and lifespan of the equipment. Furthermore, the purification methods for harmful gases are often relatively simple, relying solely on simple adsorption or conventional chemical reactions, which cannot adequately address the complex and diverse harmful components in silicon metal production waste gases. This results in purified waste gas failing to meet increasingly stringent environmental emission standards. In addition, existing devices generally suffer from complex structures and numerous components, which not only increases manufacturing costs but also makes daily maintenance more difficult and costly. Therefore, developing a targeted, efficient, and structurally sound waste gas purification device has become an urgent need to solve the problem of waste gas purification in the production of metallic silicon. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a waste gas purification device for the production of metallic silicon, which aims to improve the problem that the purification methods for harmful gases are usually relatively simple and difficult to clean.

[0004] This utility model is implemented as follows: A waste gas purification device for the production of metallic silicon includes a base plate. A pretreatment box, a spray purification box, and an adsorption purification box are sequentially installed on the top of the base plate. The spray purification box is connected to the pretreatment box and the adsorption purification box on both sides through connecting pipes. A waste gas inlet is installed at the bottom of one side of the pretreatment box. Multiple layers of staggered guide plates are installed on the inner wall of the pretreatment box. The surface of the guide plates is provided with several adsorption protrusions. An atomizing nozzle is provided at the top of the inner wall of the spray purification box. A liquid collection tank is provided at the bottom of the inner wall of the spray purification box. The liquid collection tank is connected to the atomizing nozzle through a first water pipe. A circulation pump is installed on the first water pipe. Multiple layers of adsorption mesh are provided inside the adsorption purification box. An exhaust pipe is provided on one side of the adsorption purification box.

[0005] In a preferred embodiment of this utility model, the guide plates are arranged in an inclined manner, and multiple guide plates form a serpentine channel. The inclination angle of the guide plates is between 30° and 60°.

[0006] In a preferred embodiment of this utility model, the adsorption protrusion is hemispherical, the surface of the adsorption protrusion is provided with micropores, the adsorption protrusion is made of silicone material, the diameter of each adsorption protrusion is between 0.5 and 1 cm, and the distance between adjacent adsorption protrusions is 0.3 to 0.5 cm.

[0007] In a preferred embodiment of this utility model, the atomizing nozzle is a spiral atomizing nozzle with a spray angle of 120°-150° and a nozzle diameter of 0.2 to 0.3 cm, which can atomize liquid into tiny droplets with a diameter of 50 to 100 micrometers to achieve the best purification reaction effect.

[0008] In a preferred embodiment of this utility model, a pH sensor is provided in the liquid collection tank, and the circulation pump is electrically connected to the pH sensor. The pH sensor can monitor the acidity or alkalinity of the liquid in the liquid collection tank in real time.

[0009] In a preferred embodiment of this utility model, a water outlet pipe is provided on one side of the liquid collection tank, a valve is installed on the water outlet pipe, a filter plate is fixedly installed on the inner wall of the liquid collection tank, a water inlet is fixedly installed on one side of the top of the spray purification box, a sealing cap is snapped onto the top of the water inlet, and the filter plate is positioned above the connection between the first water pipe and the liquid collection tank.

[0010] In a preferred embodiment of this utility model, a sealing top plate is snapped onto the top of the adsorption purification box, and multiple sets of guide grooves are symmetrically arranged on both sides of the inner wall of the adsorption purification box. The adsorption net is slidably connected to the inner wall of the guide groove, and the adsorption net is made of activated carbon fiber and nano titanium dioxide composite.

[0011] In a preferred embodiment of this utility model, the adsorption purification box is equipped with a vibration device, which is an electromagnetic vibrator. The electromagnetic vibrator can effectively drive the adsorption net to vibrate, thereby achieving the purpose of cleaning impurities on the adsorption net. The vibration frequency of the electromagnetic vibrator can be adjusted between 50 and 200 Hz. According to the adsorption situation of the adsorption net and the accumulation rate of impurities, the vibration frequency can be adjusted by the controller to effectively clean impurities.

[0012] The beneficial effects of this utility model are:

[0013] Highly efficient purification, meeting emission standards: The pretreatment chamber features multiple layers of staggered and inclined guide plates, working in conjunction with hemispherical adsorption protrusions on the surface to extend the gas flow path and increase the contact area, effectively adsorbing some dust and harmful gases, reducing the burden on subsequent purification processes. The spray purification chamber uses spiral atomizing nozzles to atomize liquid into tiny droplets, with a 120°-150° spray angle fully covering the space, ensuring thorough reaction with the exhaust gas. Combined with a pH sensor to monitor and control the circulation pump flow in real time, this ensures highly efficient removal of harmful gases. The adsorption purification chamber contains a multi-layered adsorption mesh made of activated carbon fiber and nano-titanium dioxide composite, which further adsorbs residual impurities. The purified exhaust gas meets increasingly stringent environmental emission standards.

[0014] Optimized structure for easy maintenance: The top of the adsorption purification box is snapped with a sealed top plate, and guide grooves are set on both sides of the inner wall. The adsorption net is slidably connected to the guide grooves, making it easy to disassemble and replace the adsorption net and facilitate cleaning or maintenance. A water outlet pipe is provided on one side of the liquid collection tank for easy discharge of treated liquid, and the valve on the water outlet pipe can control the drainage; the filter plate in the liquid collection tank can prevent impurities from entering the circulation system and ensure the normal operation of the circulation pump and atomizing nozzles; the water inlet at the top of the spray purification box facilitates liquid replenishment, and the sealing cover can prevent liquid evaporation and the entry of external impurities. The overall structural design facilitates the daily maintenance and upkeep of the equipment.

[0015] Cost reduction and economic practicality: Compared to existing complex waste gas purification devices with numerous components, this device has a relatively simple structure, reducing unnecessary parts and lowering manufacturing costs. At the same time, optimized design improves purification efficiency, reducing the cost of repeated treatments due to substandard purification. Good maintenance convenience reduces maintenance costs and extends the equipment's lifespan, making it highly economical and practical overall.

[0016] Flexible adjustment and strong adaptability: The spray angle, nozzle diameter, and ability to atomize liquid into tiny droplets of a specific diameter of the atomizing nozzle are all optimized to adapt to different waste gas purification needs. The vibration frequency of the electromagnetic vibrator can be adjusted between 50 and 200 Hz, according to the adsorption status of the adsorption net and the rate of impurity accumulation, ensuring that the adsorption net always maintains good adsorption performance, enabling the device to better cope with waste gas purification work under different operating conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a waste gas purification device for the production of metallic silicon provided by an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the pretreatment box is provided for the embodiments of this utility model;

[0020] Figure 3 A schematic diagram of the structure of the spray purification box is provided for the embodiments of this utility model;

[0021] Figure 4 A schematic diagram of the adsorption purification box is provided for the embodiments of this utility model.

[0022] In the diagram: 110-Base plate; 120-Pretreatment box; 121-Exhaust gas inlet; 122-Guide plate; 123-Adsorption protrusion; 130-Spray purification box; 1301-Connecting pipe; 131-Atomizing nozzle; 132-First water pipe; 133-Outlet pipe; 134-Filter plate; 135-Water inlet; 136-Sealing cover; 140-Adsorption purification box; 141-Adsorption net; 142-Sealing top plate; 143-Guide groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a waste gas purification device for the production of metallic silicon, including a base plate 110. A pretreatment box 120, a spray purification box 130, and an adsorption purification box 140 are sequentially installed on the top of the base plate 110. The spray purification box 130 is connected to the pretreatment box 120 and the adsorption purification box 140 on both sides through connecting pipes 1301. A waste gas inlet 121 is installed at the bottom of one side of the pretreatment box 120. A multi-layer staggered guide plate 122 is installed on the inner wall of the pretreatment box 120. A plurality of adsorption protrusions 123 are provided on the surface of the guide plate 122. An atomizing nozzle 131 is provided at the top of the inner wall of the spray purification box 130. A liquid collection tank is provided at the bottom of the inner wall of the spray purification box 130. The liquid collection tank and the atomizing nozzle 131 are connected through a first water pipe 132. A circulation pump is installed on the first water pipe 132. A multi-layer adsorption net 141 is provided inside the adsorption purification box 140. An exhaust pipe is provided on one side of the adsorption purification box 140.

[0025] In some specific implementations, the guide vanes 122 are arranged at an angle, with multiple guide vanes 122 forming a serpentine channel. The angle of inclination of the guide vanes 122 is between 30° and 60°. This angle range can effectively extend the flow path of the exhaust gas within the pretreatment box 120, allowing the exhaust gas to fully contact the surface of the guide vanes 122 and enhancing the adsorption effect of the adsorption protrusions 123 on impurities in the exhaust gas. At the same time, the inclined guide vanes 122 facilitate the natural sliding of dust and other impurities under gravity, preventing excessive accumulation of impurities on the guide vanes 122.

[0026] In some specific implementations, the adsorption protrusions 123 are hemispherical, with micropores on their surface. The protrusions 123 are made of silica gel, and each protrusion has a diameter between 0.5 and 1 cm, with a spacing of 0.3 to 0.5 cm between adjacent protrusions. Silica gel has excellent adsorption properties, and the micropores on its surface further enhance its adsorption capacity, effectively adsorbing dust and some harmful gas molecules from the exhaust gas, thus reducing the burden on subsequent purification steps.

[0027] Please see Figure 3 The atomizing nozzle 131 is a spiral atomizing nozzle 131 with a spray angle of 120°-150° and a nozzle diameter of 0.2 to 0.3 cm. It can atomize liquid into tiny droplets with a diameter of 50 to 100 micrometers to achieve the best purification reaction effect. A pH detection sensor is installed in the liquid collection tank. The circulation pump is electrically connected to the pH detection sensor, which can monitor the acidity and alkalinity of the liquid in the liquid collection tank in real time.

[0028] In some specific implementations, a water outlet pipe 133 is provided on one side of the collection tank, and a valve is installed on the water outlet pipe 133. A filter plate 134 is fixedly installed on the inner wall of the collection tank. A water inlet 135 is fixedly installed on one side of the top of the spray purification box 130, and a sealing cap 136 is snapped onto the top of the water inlet 135. The filter plate 134 is positioned above the connection between the first water pipe 132 and the collection tank. This prevents impurities from entering the first water pipe 132 and effectively prevents the atomizing nozzle 131 from becoming clogged.

[0029] Please see Figure 4 The top of the adsorption purification box 140 is fitted with a sealing top plate 142. Multiple sets of guide grooves 143 are symmetrically arranged on both sides of the inner wall of the adsorption purification box 140. The adsorption net 141 is slidably connected to the inner wall of the guide groove 143. The adsorption net 141 is made of activated carbon fiber and nano titanium dioxide composite.

[0030] In some specific implementation schemes, the adsorption purification box 140 is equipped with a vibration device, which is an electromagnetic vibrator. The electromagnetic vibrator effectively drives the adsorption net 141 to vibrate, thereby achieving the purpose of cleaning impurities on the adsorption net 141. The vibration frequency of the electromagnetic vibrator can be adjusted between 50 and 200 Hz. Based on the adsorption status of the adsorption net 141 and the rate of impurity accumulation, the vibration frequency is adjusted by a controller to effectively clean impurities. The electromagnetic vibrator effectively drives the adsorption net 141 to vibrate, thereby achieving the purpose of cleaning impurities on the adsorption net 141. The vibration frequency of the electromagnetic vibrator can be adjusted between 50 and 200 Hz. Based on the adsorption status of the adsorption net 141 and the rate of impurity accumulation, the vibration frequency is adjusted by a controller to reduce the frequency of cleaning the adsorption net 141.

[0031] Working Principle: Pretreatment Stage: Waste gas generated during silicon metal production enters the device through the waste gas inlet 121 at the bottom of one side of the pretreatment box 120. After entering the pretreatment box 120, the waste gas passes through multiple layers of staggered and inclined guide plates 122. As the waste gas flows in the serpentine channel, it makes full contact with the surface of the guide plates 122. The hemispherical adsorption protrusions 123 on the surface of the guide plates 122 are made of silica gel and can adsorb some of the dust and harmful gases in the waste gas, thus initially purifying the waste gas.

[0032] Spray purification stage: The pre-treated exhaust gas enters the spray purification chamber 130 through the connecting pipe 1301. The spiral atomizing nozzle 131 at the top of the inner wall of the spray purification chamber 130 starts working, with a spray angle of 120°-150°, which can atomize the liquid into tiny droplets with a diameter of 50 to 100 micrometers. These tiny droplets come into full contact with the exhaust gas, undergoing physical and chemical reactions to further remove harmful components from the exhaust gas. The liquid in the collection tank is continuously circulated to the atomizing nozzle 131 for spraying through the first water pipe 132 under the action of the circulation pump. The collection tank is equipped with a pH detection sensor, which can monitor the acidity or alkalinity of the liquid in real time. When the acidity or alkalinity changes, it transmits the signal to the circulation pump, which adjusts the flow rate accordingly to maintain the best spray purification effect. The outlet pipe 133 on one side of the collection tank can be used to discharge the treated liquid. A valve is installed on the outlet pipe 133 for easy control of drainage.

[0033] Adsorption purification stage: The waste gas purified by spraying then enters the adsorption purification box 140 through the connecting pipe 1301. The adsorption net 141 is slidably connected to the inner wall of the guide grooves 143 symmetrically arranged on both sides of the inner wall of the adsorption purification box 140, facilitating installation, disassembly, and replacement. The adsorption net 141 can further adsorb residual harmful gases and fine dust and other impurities in the waste gas. The electromagnetic vibrator inside the adsorption purification box 140 acts as a vibration device, driving the adsorption net 141 to vibrate, causing impurities on the adsorption net 141 to fall off, thereby maintaining the adsorption performance of the adsorption net 141. The purified gas is finally discharged from the device through the exhaust pipe on one side of the adsorption purification box 140.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waste gas purification device for metal silicon production, comprising a base plate, characterized in that, The pretreatment box, spray purification box, and adsorption purification box are sequentially installed on the top of the base plate. The spray purification box is connected to the pretreatment box and the adsorption purification box on both sides through connecting pipes. An exhaust gas inlet is installed at the bottom of one side of the pretreatment box. The inner wall of the pretreatment box is equipped with multiple layers of staggered guide plates, and the surface of the guide plates is provided with several adsorption protrusions. The top of the inner wall of the spray purification box is provided with an atomizing nozzle, and the bottom of the inner wall of the spray purification box is provided with a liquid collection tank. The liquid collection tank is connected to the atomizing nozzle through a first water pipe, and a circulation pump is installed on the first water pipe. The adsorption purification box is equipped with multiple layers of adsorption mesh, and an exhaust pipe is provided on one side of the adsorption purification box.

2. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The guide vanes are arranged at an angle, and multiple guide vanes form a serpentine channel. The angle of inclination of the guide vanes is between 30° and 60°.

3. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The adsorption protrusion is hemispherical, and the surface of the adsorption protrusion is provided with micropores.

4. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The atomizing nozzle is a spiral atomizing nozzle, and the spray angle of the atomizing nozzle is 120°-150°.

5. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The collection tank is equipped with a pH sensor, and the circulation pump is electrically connected to the pH sensor.

6. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, A water outlet pipe is provided on one side of the liquid collection tank, and a valve is installed on the water outlet pipe. A filter plate is fixedly installed on the inner wall of the liquid collection tank. A water inlet is fixedly installed on one side of the top of the spray purification box, and a sealing cap is snapped onto the top of the water inlet.

7. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The top of the adsorption purification box is fitted with a sealing top plate, and multiple sets of guide grooves are symmetrically arranged on both sides of the inner wall of the adsorption purification box. The adsorption net is slidably connected to the inner wall of the guide groove.

8. A metal silicon production exhaust gas purification device according to claim 1, characterized in that, The adsorption purification box is equipped with a vibration device, which is an electromagnetic vibrator.

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