Zeolite rotating drum adsorber with special flow guiding structure

Abstract

The utility model discloses a zeolite rotary drum adsorber with special flow guide structure belongs to environmental protection equipment technical field, including the cylinder formula runner main part and the zeolite module of rotation installation in the cylinder formula runner main part, still include the poly flow box of dismantling formula installation in the adsorption entrance of cylinder formula runner main part and the flow guide cylinder of intercommunication in poly wind box rear side, poly flow box and flow guide cylinder all are located the clearance between cylinder formula runner main part and zeolite module, and poly flow box box body gradually contracts and gathers to flow guide cylinder place, and the opening of flow guide cylinder is towards zeolite module and is close to zeolite module place. This zeolite rotary drum adsorber through design contract and gather poly flow box and flow guide flow guide cylinder structure, make VOCs gas after entering adsorption entrance to the center contract, utilize flow guide cylinder concentrated direction zeolite module, significantly reduce the diffusion amount of airflow to all around, make more VOCs directly contact zeolite module, thereby significantly improve the purification efficiency of VOCs gas.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically a zeolite rotary adsorber with a special flow guiding structure. Background Technology

[0002] VOCs (volatile organic compounds) are a major source of air pollution, widely present in industries such as chemical, coating, and printing. Zeolite rotary adsorption is currently one of the mainstream technologies for treating low-concentration, high-volume VOCs waste gas. Its core principle is to adsorb and concentrate VOCs through zeolite modules (usually zeolite honeycomb carriers), and then regenerate and recycle the zeolite through high-temperature desorption.

[0003] However, existing zeolite rotary adsorbers generally suffer from the following problems: their adsorption inlet is usually a straight-through structure (as shown in the attached image). Figure 1 As shown in the figure, VOCs gas easily diffuses to the surrounding area after entering the adsorption inlet (as shown in the figure). Figure 2 As shown in the figure, this results in poor airflow guidance, making it difficult to achieve efficient and centralized delivery of VOCs to the zeolite module, which further limits the improvement of purification efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a zeolite rotary adsorber with a special flow guiding structure. By designing a shrinking and converging flow box and a flow guiding cylinder structure, VOCs gas is concentrated towards the center and guided to the zeolite module after entering the adsorption inlet, reducing diffusion loss and thus significantly improving the purification efficiency of VOCs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A zeolite rotary drum adsorber with a special flow guiding structure includes a cylindrical rotor body and a zeolite module rotatably installed inside the cylindrical rotor body; it also includes a flow-gathering box detachably installed inside the adsorption inlet of the cylindrical rotor body and a flow-guiding tube connected to the rear side of the flow-gathering box; the flow-gathering box and the flow-guiding tube are both located in the gap between the cylindrical rotor body and the zeolite module, the flow-gathering box gradually contracts and converges towards the flow-guiding tube, and the opening of the flow-guiding tube faces towards and is close to the zeolite module.

[0007] By adopting the above scheme, the zeolite rotary adsorber, through the design of a shrinking and converging flow box and a flow guiding cylinder structure, allows VOCs gas to converge towards the center after entering the adsorption inlet. Then, the flow guiding cylinder concentrates and guides the gas towards the zeolite module, significantly reducing the amount of gas diffusion to the surrounding areas. This allows more VOCs to directly contact the zeolite module, thereby significantly improving the purification efficiency of VOCs gas.

[0008] In a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the flow guiding tube is connected to the center of the flow gathering box. The flow gathering box is tilted and gathered at the flow guiding tube from the top, bottom, left, and right, thus forming a symmetrical contraction structure, which makes the VOCs gas more uniform when gathered.

[0009] As a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the angle between the inner wall of the air collecting box and the central axis of the flow guiding cylinder is 15-30°. This angle design can optimize the effect of airflow contraction and gathering, avoiding the problems of excessive flow resistance due to too small an angle or insufficient gathering due to too large an angle.

[0010] In a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the length L1 of the flow guiding cylinder and the length L2 of the flow gathering box satisfy L1:L2=1:(1.5-2), where the length of the flow gathering box is the dimension along the axial direction of the flow guiding cylinder. The above ratio can ensure that the flow gathering box's contraction and guidance of the airflow matches the flow guiding and conveying of the flow guiding cylinder, avoiding airflow instability caused by the mismatch of length ratios.

[0011] As a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the inner wall of the flow guiding cylinder is connected to multiple flow guiding blades arranged in a spiral circumferential array. Through the guiding effect of the spiral blades, the airflow can form a rotating flow inside the flow guiding cylinder, further enhancing the concentration of the airflow and reducing radial diffusion.

[0012] As a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the number of flow guiding blades is 8-12, the helix angle of each flow guiding blade relative to the central axis of the flow guiding cylinder is 30-60°, and the radial spacing between each pair of adjacent flow guiding blades is equal. Under the above parameter range, the helical blades can effectively guide the airflow to rotate and converge, and will not cause excessive flow resistance due to too many blades or too large angles.

[0013] As a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, the side of the current collection box is fixed with a positioning frame that matches the adsorption inlet. The positioning frame enables the current collection box to be quickly positioned and disassembled within the adsorption inlet.

[0014] In a preferred embodiment of a zeolite rotary adsorber with a special flow guiding structure, a sealing gasket is provided on the mating surface between the positioning frame and the adsorption inlet. The gasket is made of silicone or fluororubber and has a thickness of 2-5mm. It is used to seal the gap between the flow collection box and the adsorption inlet to prevent VOCs gas leakage and ensure that the airflow passes through the flow collection box and the flow guiding cylinder to guide the zeolite module.

[0015] The beneficial effects of this utility model are:

[0016] 1. Shrinking and converging structure reduces diffusion: The box of the flow convergence chamber gradually shrinks and converges at the flow guide tube, and all four sides are inclined towards the center. This can concentrate and guide the VOCs gas entering the adsorption inlet to the flow guide tube, significantly reducing the amount of airflow diffusion to the surroundings, and allowing more VOCs gas to directly contact the zeolite module.

[0017] 2. Symmetrical flow guidance enhances concentration: The flow guide tube is connected to the center of the flow collection box, and the symmetrical inclined side design of the flow collection box, together with the spirally distributed flow guide blades inside the flow guide tube, can make the airflow form an axisymmetric stable flow during the flow collection-guiding process, further avoiding radial dispersion, ensuring that the VOCs airflow impacts the zeolite module uniformly and concentratedly, and improving the sufficiency of the adsorption reaction.

[0018] 3. Parameter optimization improves stability: The optimized design of parameters such as the angle between the inner wall of the flow box and the central axis (15-30°), the length ratio of the guide tube to the flow box (1:1.5-2), and the helix angle of the guide blades (30-60°) can reduce flow resistance while ensuring the airflow guiding effect and avoid uneven adsorption caused by excessively high or low local flow velocities.

[0019] 4. Detachable structure facilitates maintenance: The flow collection box is detachable and can be installed by means of a fitting design between the positioning frame and the adsorption inlet (with a sealing gasket). This makes it easy to clean the accumulated dust or blockages in the flow collection box and the guide tube regularly, and also makes it easy to replace damaged parts, thus reducing equipment maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 The background technology shows the three-dimensional structure of a traditional zeolite rotary adsorber. Figure 1 ;

[0022] Figure 2 for Figure 1 A schematic diagram showing how VOCs gas easily diffuses to the surrounding area after entering the adsorption inlet;

[0023] Figure 3 A three-dimensional structural diagram of a zeolite rotary adsorber with a special flow guiding structure;

[0024] Figure 4 for Figure 3 A schematic diagram showing how VOCs gas gathers towards the center and is guided to the zeolite module after entering the adsorption inlet;

[0025] Figure 5 for Figure 3 Three-dimensional structure with special flow guiding structure Figure 1 ;

[0026] Figure 6 for Figure 3 Three-dimensional structure with special flow guiding structure Figure 2 ;

[0027] The markings in the diagram are: 1-Cylindrical rotor body; 2-Zeolite module; 3-Adsorption inlet; 4-Gathering box; 5-Guide tube; 6-Guide blade; 7-Positioning frame. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 3 to 6 As shown, a zeolite rotary adsorber with a special flow guiding structure is provided, which is used to concentrate and guide VOCs gas towards the center after entering the adsorption inlet 3 and to the zeolite module 2. Specifically, it includes a cylindrical rotor body 1 (for supporting the zeolite module 2 and driving its rotation) and a zeolite module 2 (composed of multiple zeolite honeycomb carriers stacked and bonded) rotatably installed in the cylindrical rotor body 1; it also includes a detachable flow-gathering box 4 installed in the adsorption inlet 3 of the cylindrical rotor body 1 and a flow guide tube 5 connected to the rear side of the flow-gathering box; the flow-gathering box 4 and the flow guide tube 5 are both located in the gap between the cylindrical rotor body 1 and the zeolite module 2. The box body of the flow-gathering box 4 gradually contracts and gathers towards the flow guide tube 5. The opening of the flow guide tube 5 faces the zeolite module 2 and is close to the zeolite module 2 (usually 30mm away from the zeolite module). This zeolite rotary adsorber, through the design of a convergent chamber 4, causes VOCs gas to converge towards the center after entering the adsorption inlet 3. Then, it is guided to the zeolite module 2 by the guide tube 5, which significantly reduces the amount of airflow diffusing to the surroundings. This allows more VOCs to directly contact the zeolite module 2, thereby significantly improving the purification efficiency of VOCs gas.

[0030] like Figures 5 to 6 As shown, the guide tube 5 is connected to the center of the collector box 4. The upper, lower, left and right sides of the collector box 4 are inclined to the guide tube 5 to form a symmetrical "funnel" structure, which makes the VOCs gas more uniform when it is gathered.

[0031] Continue as Figures 5 to 6As shown, the angle between the inner wall of the air-gathering box and the central axis of the guide tube 5 is 20°. This angle can be within the range of 15-30°. This angle design can optimize the effect of airflow contraction and gathering, and avoid the problems of excessive flow resistance due to too small an angle or insufficient gathering due to too large an angle.

[0032] Continue as Figures 5 to 6 As shown, the length L1 of the guide tube 5 and the length L2 of the convergent box 4 satisfy L1:L2=1:1.8. The ratio of L1:L2 can be within the range of 1:(1.5-2), where the length of the convergent box 4 is the dimension along the axial direction of the guide tube 5. The above ratio can ensure that the convergent box 4's contraction and guidance of the airflow matches the guide tube 5's guiding and conveying, avoiding airflow instability caused by the mismatch of length ratios.

[0033] Continue as Figures 5 to 6 As shown, the inner wall of the guide tube 5 is connected to multiple guide blades 6 arranged in a spiral circumferential array. Through the guiding effect of the spiral blades, the airflow can form a rotating flow in the guide tube 5, which further enhances the concentration of the airflow and reduces radial diffusion.

[0034] Continue as Figures 5 to 6 As shown, the number of guide vanes 6 is 10, which can be in the range of 8-12. The helix angle of each guide vane 6 relative to the central axis of the guide tube 5 is 50°, which can be in the range of 30-60°. The radial spacing between each pair of adjacent guide vanes 6 is equal. Under the above parameter range, the helical blades can effectively guide the airflow to rotate and converge, and will not cause excessive flow resistance due to too many blades or too large angles.

[0035] Continue as Figures 5 to 6 As shown, the side of the current collection box 4 is fixed with a positioning frame 7 that matches the adsorption inlet 3. The current collection box 4 can be quickly positioned and disassembled and installed in the adsorption inlet 3 by means of bolts through the positioning frame 7.

[0036] Continue as Figures 5 to 6 As shown, a sealing gasket (omitted in the figure) is provided on the mating surface of the positioning frame 7 and the adsorption inlet 3. It is made of silicone material, or of course, fluororubber material, with a thickness of 3mm. The thickness can be in the range of 2-5mm. It is used to seal the gap between the flow collection box 4 and the adsorption inlet 3 to prevent VOCs gas leakage and ensure that the airflow passes through the flow collection box 4 and the guide tube 5 to guide the zeolite module 2.

[0037] The working principle of this utility model:

[0038] like Figures 3 to 4As shown, during operation, VOC-containing waste gas enters through the adsorption inlet 3, first contacting the inclined side of the collector box 4, and flowing towards the guide tube 5 under the effect of contraction and convergence. The airflow then enters the guide tube 5, forming a rotating airflow guided by the spiral guide vanes 6, and finally concentrating to impact the surface of the zeolite module 2, where it fully contacts and is adsorbed by the zeolite. Due to the significantly reduced airflow diffusion, the contact efficiency between VOCs and zeolite is greatly improved, resulting in a purification efficiency 20%-30% higher than traditional structures. For regular maintenance, the collector box 4 and guide tube 5 can be removed from the adsorption inlet 3 by disassembling the positioning frame 7 to clean internal dust or replace the sealing gaskets; the operation is convenient.

[0039] The above-mentioned design effectively solves the problem of low adsorption efficiency caused by VOCs airflow diffusion through the shrinking and gathering of the flow box 4, the spiral guidance of the flow guide tube 5, and parameter optimization. It has the advantages of compact structure, convenient maintenance and high purification efficiency, and is suitable for adsorption and purification treatment of industrial VOCs waste gas.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A zeolite rotary drum adsorber with a special flow guiding structure, comprising a cylindrical rotor body and a zeolite module rotatably installed inside the cylindrical rotor body; Its features are: It also includes a detachable flow-gathering box installed inside the adsorption inlet of the cylindrical rotor body and a flow-guiding tube connected to the rear side of the flow-gathering box; The flow-gathering box and the flow-guiding tube are both located in the gap between the cylindrical rotor body and the zeolite module. The flow-gathering box body gradually contracts and converges towards the flow-guiding tube, and the opening of the flow-guiding tube faces the zeolite module and is close to the zeolite module.

2. The zeolite rotary adsorber with a special flow guiding structure according to claim 1, characterized in that: The guide tube is connected to the center of the flow-gathering box, and the flow-gathering box is tilted and gathered at the guide tube from the top, bottom, left and right sides.

3. The zeolite rotary adsorber with a special flow guiding structure according to claim 2, characterized in that: The angle between the inner wall of the air collecting box and the central axis of the guide tube is 15-30°.

4. The zeolite rotary adsorber with a special flow guiding structure according to claim 1, characterized in that: The length L1 of the guide tube and the length L2 of the flow-gathering box satisfy L1:L2=1:(1.5-2), where the length of the flow-gathering box is the dimension along the axial direction of the guide tube.

5. The zeolite rotary adsorber with a special flow guiding structure according to claim 1, characterized in that: The inner wall of the guide tube is connected to multiple guide blades arranged in a spiral circumferential array.

6. The zeolite rotary adsorber with a special flow guiding structure according to claim 5, characterized in that: The number of guide vanes is 8-12, the helix angle of each guide vane relative to the central axis of the guide tube is 30-60°, and the radial spacing between any two adjacent guide vanes is equal.

7. The zeolite rotary adsorber with a special flow guiding structure according to claim 1, characterized in that: The flow collection box has a positioning frame fixed to its side that matches the adsorption inlet.

8. The zeolite rotary adsorber with a special flow guiding structure according to claim 7, characterized in that: A sealing gasket is provided on the mating surface between the positioning frame and the adsorption inlet.

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