A zeolite rotating drum desorption high-temperature gas air distribution device

Abstract

The utility model discloses a kind of zeolite rotary drum desorption high-temperature gas air distribution devices, it is related to zeolite rotary drum equipment technical field, including the gradually expanding pipe of connecting hot air pipe and hot air inlet;The gas outlet end of hot air pipe is vertically downward;The gas outlet direction of hot air inlet is horizontal direction, and its upper fixed mounting has air distribution plate;The gas inlet end of gradually expanding pipe is connected in the gas outlet end of hot air pipe, and its gas outlet end connects hot air inlet;The cross-sectional area of gradually expanding pipe gradually increases from gas inlet end to gas outlet end, until with hot air inlet match;Gradually expanding pipe inside is uniformly provided with multiple up and down arranged baffle according to its curvature, baffle separates gradually expanding pipe into multiple up and down arranged diameter expansion passage.By setting baffle, ensure that high-temperature hot air can evenly pass through zeolite cross section, improve the desorption effect and operating efficiency of zeolite rotary drum.

Description

Technical Field

[0001] This utility model relates to the technical field of zeolite rotary drum equipment, and in particular to a high-temperature gas distribution device for desorption of zeolite rotary drum. Background Technology

[0002] Zeolite rotary drums, playing a crucial role in gas separation, purification, and concentration, are widely used in various fields such as volatile organic compound (VOCs) treatment, air dehumidification, and industrial waste gas recovery. During the desorption process in a zeolite rotary drum, high-temperature hot air is counter-currently introduced into the saturated zeolite zone to promote the desorption of adsorbed pollutants. To achieve this, a dedicated hot air inlet is provided in the desorption zone of the zeolite rotary drum. Hot air is transported to the inlet through a hot air duct and then passes through the zeolite cross-section. To ensure that the high-temperature hot air passes evenly through the zeolite cross-section, a perforated plate is typically installed at the hot air inlet.

[0003] In practical applications, the hot air inlet size needs to be matched with the height of the zeolite to ensure that hot air can cover the entire zeolite cross-section, resulting in a generally relatively large hot air inlet. When hot air is introduced from the hot air duct to the hot air inlet, its flow characteristics change, causing it to naturally concentrate in the upper region of the inlet. Although the perforated plate can distribute the hot air to some extent, attempting to guide it downwards and distribute it evenly, the uneven distribution of hot air within the inlet itself is significant, limiting the effectiveness of this distribution. It remains difficult to guarantee sufficient hot air flow to the bottom zeolite. Due to insufficient hot air flow, the bottom zeolite cannot receive adequate thermal energy, leading to ineffective desorption of adsorbed pollutants and uneven desorption throughout the zeolite rotor. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature gas distribution device for zeolite rotary drum desorption. By setting baffles, it ensures that high-temperature hot air can pass evenly through the zeolite cross section, thereby improving the desorption effect and operating efficiency of the zeolite rotary drum.

[0005] To achieve the above objectives, this utility model provides a zeolite rotary drum desorption high-temperature gas distribution device, including a diffuser connecting a hot air pipe and a hot air inlet; the outlet end of the hot air pipe is vertically downward; the outlet direction of the hot air inlet is horizontal, and a distribution plate is fixedly installed on it; the inlet end of the diffuser is connected to the outlet end of the hot air pipe, and its outlet end is connected to the hot air inlet; the cross-sectional area of ​​the diffuser gradually increases from the inlet end to the outlet end until it matches the hot air inlet; multiple vertically arranged baffles are evenly arranged inside the diffuser according to its curvature, and the baffles divide the diffuser into multiple vertically arranged expansion channels.

[0006] With the above structure, the cross-sectional area of ​​the diffuser gradually increases from the inlet to the outlet until it matches the hot air inlet. This gradual expansion design allows the hot air to gradually adapt to the size changes during flow, reducing abrupt changes in flow velocity caused by sudden size changes, resulting in smoother hot air flow, avoiding turbulence and pressure loss, and improving hot air delivery efficiency. By setting baffles, the hot air can be guided to flow evenly in each expansion channel, preventing hot air from concentrating at the top and ensuring a more uniform distribution of hot air throughout the diffuser, providing a foundation for subsequent uniform air distribution.

[0007] Preferably, the hot air duct and the diffuser are connected by a flange and flange bolts for sealing. This connection method has the advantages of strong connection and good sealing performance. It can effectively prevent hot air leakage at the connection, ensure that hot air can smoothly enter the diffuser from the hot air duct, improve the stability and efficiency of hot air delivery, and avoid hot air loss and energy waste caused by leakage.

[0008] Preferably, the diffuser includes a vertical pipe connected to the hot air duct and pointing vertically downwards, a horizontal pipe connected to the hot air inlet, and a transition pipe connecting the vertical pipe and the horizontal pipe; the transition pipe is an inclined pipe installed from top to bottom. This structure allows hot air to change its flow direction more smoothly within the diffuser, gradually changing from vertical downward flow to horizontal flow, reducing energy loss and airflow turbulence caused by abrupt changes in flow direction, improving the smoothness and stability of hot air flow, and facilitating the uniform entry of hot air into the hot air inlet.

[0009] Preferably, the vertical pipe, transition pipe, and horizontal pipe are an integral structure welded from stainless steel. Stainless steel has excellent high-temperature resistance and corrosion resistance, ensuring the diffuser operates stably for a long time in high-temperature environments, is not easily damaged by high temperatures and corrosion, and extends the service life of the device. The integral structure enhances the overall strength and stability of the diffuser, reduces vibration and leakage problems caused by loose component connections, and improves the reliability of the device operation.

[0010] Preferably, the air distribution plate includes an arc-shaped plate body; the outlet end of the diffuser is fixed to the plate body; air distribution holes are formed on the plate body corresponding to the outlet end of the diffuser, and the air distribution holes constitute the hot air inlet. The arc-shaped plate body design can better adapt to the flow direction of hot air, allowing the hot air to flow more smoothly to the air distribution holes, reducing collisions and energy loss between the hot air and the plate body, and improving the efficiency of hot air passing through the air distribution holes. After exiting the diffuser, the hot air can directly enter the zeolite rotor through the air distribution holes, reducing the flow path and resistance of the hot air, ensuring that the hot air can enter the zeolite rotor with a more uniform flow rate and volume, and improving the air distribution effect.

[0011] Preferably, the air distribution holes corresponding to each expansion channel gradually increase in size from top to bottom. This design is based on the flow characteristics of hot air in the diffuser tube. Since the hot air velocity is relatively fast at the top and relatively slow at the bottom, increasing the size of the lower air distribution holes can make the hot air flux in the upper and lower parts more balanced, further ensuring the uniformity of hot air passing through the zeolite cross-section, making the desorption of the zeolite drum more efficient and uniform, and improving the desorption effect and processing capacity of the zeolite drum.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are:

[0013] This invention relates to a high-temperature gas distribution device for zeolite rotary drum desorption, which solves the problem of uneven hot air distribution during zeolite rotary drum desorption, leading to uneven zeolite desorption. This invention ensures that high-temperature hot air can pass evenly through the zeolite cross-section by setting up baffles, thereby improving the desorption effect and operating efficiency of the zeolite rotary drum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a zeolite rotary drum;

[0015] Figure 2 yes Figure 1 Top view;

[0016] Figure 3 yes Figure 2 Sectional view in the middle II direction;

[0017] Figure 4 This is a schematic diagram of the installation structure of a zeolite rotary drum desorption high-temperature gas distribution device according to this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of a gradually expanding tube;

[0019] Figure 6 yes Figure 4 Front view of the air distribution plate.

[0020] In the diagram, A is the adsorption zone, B is the desorption zone, C is the cooling zone, 1 is the hot air duct, 2 is the air distribution plate, 21 is the air distribution hole, 22 is the cold air hole, 3 is the diffuser, 30 is the baffle, 31 is the vertical pipe, 32 is the horizontal pipe, and 33 is the transition pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] The orientations mentioned in this specification are based on the orientation of the zeolite rotary drum desorption high-temperature gas distribution device of this utility model during normal operation, and do not limit the orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0023] like Figures 1-6 As shown, a zeolite rotary drum desorption high-temperature gas distribution device is installed on a zeolite rotary drum. The zeolite rotary drum includes an adsorption zone A, a desorption zone B, and a cooling zone C. The structure of the zeolite rotary drum can be referred to in Chinese Patent CN 118718665A, "A Novel Cylindrical Zeolite Rotary Concentrator," and will not be described in detail here.

[0024] A hot air duct 1 is installed at the top of desorption zone B, with its outlet pointing vertically downwards. Inside desorption zone B, a hot air inlet is located on one side of the zeolite, with the outlet direction horizontal, and a gas distribution plate 2 is fixedly installed on it. The size of the hot air inlet matches the height of the zeolite.

[0025] A zeolite rotary drum desorption high-temperature gas distribution device includes a diffuser 3 connecting a hot air pipe 1 and a hot air inlet, serving to transition and guide the hot air. The inlet end of the diffuser 3 is connected to the outlet end of the hot air pipe 1, and the outlet end of the diffuser 3 is connected to the hot air inlet. The cross-sectional area of ​​the diffuser 3 gradually increases from the inlet end to the outlet end until it matches the hot air inlet. This gradual expansion design allows the hot air to gradually adapt to changes in size during flow, reducing abrupt changes in flow velocity caused by sudden size changes. In this embodiment, both the hot air pipe 1 and the hot air inlet are square pipes; the width of the hot air inlet is the same as the side of the hot air pipe 1, and its height is greater than the other side of the hot air pipe 1. Multiple vertically arranged baffles 30 are uniformly arranged inside the diffuser 3 according to its curvature, that is, the baffles 30 divide the internal pipe of the diffuser 3 into multiple vertically arranged expansion channels. In this embodiment, it is preferable that the widths of adjacent vertically arranged baffles 30 are the same, thus the widths of the expansion channels are consistent and consistent with the overall curvature direction of the diffuser 3. By setting baffles 30, hot air can be guided to flow evenly in each expansion channel, avoiding the hot air from concentrating in the upper part, thereby ensuring that the distribution of hot air in the entire diffuser 3 is more uniform.

[0026] The diffuser 3 includes a vertical pipe 31 connected to the hot air duct 1 and extending vertically downwards, a horizontal pipe 32 connected to the hot air inlet, and a transition pipe 33 connecting the vertical pipe 31 and the horizontal pipe 32; the transition pipe 33 is an inclined pipe installed from top to bottom. The angle between the transition pipe 33 and the vertical pipe 31 is 125°, and this angle can be adjusted as needed in practical applications. The baffle 30 has the same overall curvature as the diffuser 3, and includes a vertical plate 301, a horizontal plate 302, and a transition plate 303; the transition plate 303 is an inclined plate installed from top to bottom. The vertical pipe 31, the transition pipe 33, and the horizontal pipe 32 are an integral structure welded from stainless steel.

[0027] This structure allows hot air to change its flow direction more smoothly within the diffuser 3, gradually transitioning from vertical downward flow to horizontal flow. Furthermore, the vertical pipe 31, transition pipe 33, and horizontal pipe 32 are an integral structure welded together from stainless steel. Stainless steel has excellent high-temperature resistance and corrosion resistance, ensuring long-term stable operation of the diffuser 3 in high-temperature environments. The integral structure also enhances the overall strength and stability of the diffuser 3.

[0028] Furthermore, the hot air duct 1 and the diffuser 3 are sealed together by a flange and flange bolts. This connection method has the advantages of strong connection and good sealing performance, which can effectively prevent hot air from leaking at the connection and ensure that hot air can smoothly enter the diffuser 3 from the hot air duct 1.

[0029] like Figure 3 and Figure 5 As shown, the air distribution plate 2 includes an arc-shaped plate body; the outlet end of the diffuser 3 is fixed on the plate body; air distribution holes 21 are opened on the plate body corresponding to the outlet end of the diffuser 3, forming a hot air inlet. The air distribution holes 21 corresponding to each expansion channel gradually increase in size from top to bottom. The arc-shaped plate body design can better adapt to the flow direction of hot air, allowing hot air to pass through the air distribution holes 21 more evenly. Furthermore, the air distribution holes 21 corresponding to each expansion channel gradually increase in size from top to bottom. This design is based on the flow characteristics of hot air in the diffuser 3. Since the hot air velocity is relatively fast at the top and relatively slow at the bottom, by increasing the size of the lower air distribution holes 21, the hot air flux in the upper and lower parts can be more balanced, further ensuring the uniformity of hot air passing through the zeolite cross section.

[0030] Furthermore, since the device also includes a cooling zone C, cold air holes 22 are provided on the air distribution plate 2 for the passage of cold air through the cooling zone C. Because the cooling zone C is not directly related to the improvement of this utility model, its specific structure will not be described here; however, existing technical structures can be referenced.

[0031] like Figures 1-6 As shown in the figure, the working process of a zeolite rotary drum desorption high-temperature gas distribution device is as follows:

[0032] During the zeolite rotor desorption process, high-temperature hot air (150–300℃) flows vertically downwards from the hot air duct 1 into the diffuser 3. As the cross-sectional area of ​​the diffuser 3 gradually increases, the hot air gradually diffuses during the flow. Simultaneously, the baffle 30 guides the hot air into each expansion channel, ensuring uniform distribution within the diffuser 3. After passing through the diffuser 3, the hot air enters the air distribution plate 2 and, through the air distribution holes 2, is introduced into the desorption zone B of the zeolite rotor at a uniform flow rate and volume. It then flows counter-currently through the saturated zeolite region, causing the adsorbed pollutants to desorb uniformly, thus achieving efficient and uniform desorption in the zeolite rotor.

[0033] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A zeolite rotary drum desorption high-temperature gas distribution device, characterized in that: This includes a diffuser pipe that connects the hot air duct to the hot air inlet; The outlet end of the hot air duct is vertically downward; the outlet direction of the hot air inlet is horizontal, and an air distribution plate is fixedly installed on it. The inlet end of the diffuser is connected to the outlet end of the hot air duct, and the outlet end is connected to the hot air inlet; the cross-sectional area of ​​the diffuser gradually increases from the inlet end to the outlet end until it matches the hot air inlet. The inside of the expanding tube is uniformly arranged with multiple vertically arranged baffles according to its curvature, and the baffles divide the expanding tube into multiple vertically arranged expansion channels.

2. The zeolite rotary drum desorption high-temperature gas distribution device according to claim 1, characterized in that: The hot air duct and the diffuser are connected by a flange and flange bolts for sealing.

3. The zeolite rotary drum desorption high-temperature gas distribution device according to claim 1, characterized in that: The diffuser includes a vertical pipe connected to the hot air pipe and pointing vertically downwards, a horizontal pipe connected to the hot air inlet, and a transition pipe connecting the vertical pipe and the horizontal pipe; the transition pipe is an inclined pipe that is inclined from top to bottom.

4. The zeolite rotary drum desorption high-temperature gas distribution device according to claim 3, characterized in that: The vertical pipe, the transition pipe, and the horizontal pipe are an integral structure welded together using stainless steel.

5. The zeolite rotary drum desorption high-temperature gas distribution device according to claim 1, characterized in that: The air distribution plate includes an arc-shaped plate body; the air outlet end of the diffuser is fixed on the plate body; air distribution holes are opened on the plate body corresponding to the air outlet end of the diffuser, and the air distribution holes form the hot air inlet.

6. The zeolite rotary drum desorption high-temperature gas distribution device according to claim 5, characterized in that: The air distribution holes corresponding to each of the expansion channels gradually increase in size from top to bottom.

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