Ash bucket anti-condensation device and system
By using the hot flue gas from the belt roaster to heat the material in the ash hopper, and employing a multi-set bent pipe structure and compensators, the problem of condensation and clumping in the ash hopper was solved, reducing costs and improving production efficiency and equipment lifespan.
Patent Information
- Application Number
- CN202520201393.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-10
AI Technical Summary
In winter or cold environments, the material in the ash hopper is prone to condensation and clumping, leading to blockages. Existing electric heating is uneven and steam heating is costly, increasing project costs.
The hot flue gas generated during the operation of the belt roaster is used to heat the material in the ash hopper through the heat exchange tube group, which avoids condensation and agglomeration. Multiple sets of bent pipe structures and compensators are used to prevent thermal displacement, and existing equipment is used to reduce costs.
This achieves uniform heating of materials in the ash hopper, avoids clumping, reduces the construction and operation costs of the production system, and improves energy utilization and equipment lifespan.
Smart Images
Figure CN223925435U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of dust removal equipment, specifically relating to a dust hopper anti-condensation device and system. Background Technology
[0002] In winter or cold environments, materials in the ash hopper are easily affected by low temperatures. When the material temperature is below its dew point, condensation will form on the material surface. These water droplets can combine with the material to form clumps, affecting the material's flowability and conveying efficiency. Furthermore, if the material in the ash hopper clumps severely, it may cause blockage, disrupting normal production.
[0003] Currently, electric or steam heating is mostly used for heat tracing in dust collector hoppers to raise the temperature of the material in the hopper and prevent condensation or clumping.
[0004] However, electric heating has the problem of uneven heating, which can easily cause material to clump together and block the ash hopper.
[0005] In engineering construction, some factories cannot provide steam for heat tracing, and adding separate steam equipment (heat source equipment) would significantly increase the project cost. Therefore, inventing a low-cost anti-condensation device for ash hoppers is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0006] To address the aforementioned technical problems, this application provides an anti-condensation device for ash hoppers, thereby solving the problem of high cost of existing heat tracing devices.
[0007] The technical solution adopted to achieve the purpose of this application is as follows:
[0008] A device for preventing condensation in an ash hopper includes an inlet main duct, a heat exchange tube assembly, and a return main duct.
[0009] The heat exchange tube assembly is used to heat the material in the ash hopper;
[0010] A hot air blower is installed at the air inlet end of the main air inlet pipe, and the air inlet of the hot air blower is connected to the working chamber of the belt roaster.
[0011] The outlet of the return air main is connected to the surrounding environment of the belt roaster through a dust collector, and the outlet of the inlet air main is connected to the inlet of the return air main through the heat exchange tube assembly.
[0012] To better realize this application, further optimizations are made to the above structure, wherein the heat exchange tube assembly includes an inlet branch pipe, a return branch pipe, and heat exchange tube fittings;
[0013] The heat exchange pipe is a bend, and its two ends are connected to the main air inlet pipe and the main air return pipe through the inlet branch pipe and the return branch pipe, respectively.
[0014] To better realize this application, the above structure is further optimized, and the number of heat exchange tubes is multiple, and the multiple heat exchange tubes are arranged along the length direction of the air inlet branch pipe.
[0015] To better realize this application, the above structure is further optimized. The number of heat exchange tube groups is multiple, and the air inlet of each of the multiple heat exchange tube groups is connected to the air outlet of the main air inlet pipe, and the air outlet of each of the multiple heat exchange tube groups is connected to the air inlet of the main return air pipe.
[0016] To better realize this application, further optimizations are made to the above structure, wherein the air inlet branch pipe is an "L" or "Z" shaped bend; and the air return branch pipe is an "L" or "Z" shaped bend.
[0017] To better realize this application, the above structure is further optimized, and the heat exchange pipe fitting is an "S" shaped bend.
[0018] To better realize this application, further optimizations are made to the above structure, wherein the air inlet duct includes a first duct body and a second duct body;
[0019] The first pipe and the second pipe are connected by a pipe compensator. The end of the first pipe away from the second pipe is connected to the hot air blower, and the second pipe is connected to the heat exchange tube group.
[0020] To better realize this application, the above structure is further optimized by providing an on / off valve at the end of the first tube that is away from the second tube.
[0021] On the other hand, this application also provides a dust hopper anti-condensation system, which includes a dust hopper and the aforementioned dust hopper anti-condensation device;
[0022] The heat exchange tube assembly in the ash hopper anti-condensation device is installed in the ash hopper.
[0023] To better realize this application, the above structure is further optimized, and each of the ash hoppers is provided with at least two sets of the heat exchange tube groups.
[0024] As can be seen from the above technical solution, the hot air blower in the ash hopper anti-condensation device provided in this application can extract the hot flue gas generated when the belt roaster is working and send it to the heat exchange tube group through the air inlet main pipe to increase the temperature inside the ash hopper and prevent air condensation from combining with the material and causing agglomeration. This ash hopper anti-condensation device does not require the addition of dedicated heat source equipment, which reduces the investment in the construction and operation costs of the entire production system, thereby achieving the effect of cost reduction and efficiency improvement. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of an anti-condensation device for a dust hopper according to this application.
[0026] Figure 2 This is a top view of an anti-condensation device for a dust hopper according to this application;
[0027] Figure 3 for Figure 2 Enlarged view of part A in the middle;
[0028] Figure 4 This is a diagram showing the connection relationship between the heat exchange tube assembly and the ash hopper in an anti-condensation device for an ash hopper according to this application.
[0029] Figure 5 This is a schematic diagram of the structure of an anti-condensation system for ash hoppers according to this application.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1-Main air inlet duct; 11-First duct body; 12-Second duct body; 13-Pipe compensator; 14-On / off valve;
[0032] 2-Heat exchanger tube assembly, 21-Inlet branch pipe, 22-Return branch pipe, 23-Heat exchanger fittings;
[0033] 3-Return air main;
[0034] 4-Grey hopper. Detailed Implementation
[0035] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0036] In the embodiments of this application, such as Figures 1 to 4 As shown, the ash hopper anti-condensation device includes an inlet main duct 1, a heat exchange tube assembly 2, and a return main duct 3; wherein,
[0037] The heat exchange tube assembly 2 is installed in the ash hopper 4 to raise the temperature of the air in the ash hopper 4 and prevent the air in the ash hopper 4 from condensing and combining with the material to form clumps.
[0038] A hot air blower (not shown in the figure) is installed at the air inlet end of the main air inlet pipe 1. The air inlet of the hot air blower is connected to the working chamber of the belt roaster.
[0039] The outlet of the return air main duct 3 is connected to the surrounding environment of the belt roaster through a dust collector (not shown in the figure), and the outlet of the inlet air main duct 1 is connected to the inlet of the return air main duct 3 through the heat exchange tube group 2.
[0040] When the ambient temperature is low and material passes through ash hopper 4 (i.e., when the dust removal device is in operation), the operator can turn on the ash hopper anti-condensation device. The hot air blower in the ash hopper anti-condensation device can introduce the hot flue gas from the working chamber of the belt roaster into the heat exchange tube group 2. Driven by the pressure difference between the hot air blower and the dust collector, the air passes through the heat exchange tube group 2, heating the temperature of the air in ash hopper 4 to prevent the air in ash hopper 4 from condensing and combining with the material to form clumps.
[0041] After heat exchange, the flue gas can be discharged into the surrounding environment through a dust collector to avoid causing pollution to the surrounding environment.
[0042] It is worth noting that the ash hopper anti-condensation device directly uses the heat source generated by other equipment in the factory (a belt roaster in this application) during operation, without the need to add a separate dedicated heat source device, thereby reducing the investment in the construction and operation costs of the entire production system and achieving the effect of cost reduction and efficiency improvement.
[0043] In addition, drawing out and utilizing the hot flue gas from the working chamber of the belt roaster can improve the energy utilization rate of the entire production system, thereby achieving the effect of energy conservation and environmental protection.
[0044] In some embodiments, the heat exchanger tube assembly 2 described above includes an inlet branch pipe 21, a return branch pipe 22, and heat exchanger tube fittings 23. See [link to documentation]. Figure 3 and Figure 4 ;in,
[0045] The heat exchanger fitting 23 is connected in an "S"-shaped natural compensation manner, that is, the heat exchanger fitting 23 is a bend, which can prevent the heat exchanger fitting 23 from being damaged due to thermal displacement, thereby ensuring the service life of the ash hopper anti-condensation device. The two ends of the heat exchanger fitting 23 are connected to the air inlet main pipe 1 and the air return main pipe 3 through the air inlet branch pipe 21 and the air return branch pipe 22, respectively.
[0046] In addition, the "S"-shaped heat exchange tube 23 can increase its contact area with the material, thereby improving the heat exchange effect of the heat exchange tube 23.
[0047] In some embodiments, the number of heat exchange tubes 23 is multiple, and the multiple heat exchange tubes 23 are arranged at intervals along the length direction of the air inlet branch pipe 21 to form a material heat exchange surface. Adjacent heat exchange tubes 23 do not contact each other, so as to increase the contact area between the material heat exchange surface and the material, thereby further improving the heat exchange effect of the ash hopper anti-condensation device.
[0048] It should be noted that, since ash hopper 4 has a funnel-shaped structure that is wider at the top and narrower at the bottom, see [reference needed]. Figure 4 The arrangement of multiple heat exchange tubes 23 also needs to correspond to the shape of the ash hopper 4. That is, the distance between two adjacent heat exchange tubes near the top of the ash hopper 4 is greater than the distance between two adjacent heat exchange tubes near the bottom of the ash hopper 4, so as to better fit the inner wall of the ash hopper 4 and thus exchange heat with the material in the ash hopper 4 more evenly.
[0049] Preferably, the number of heat exchange tube groups 2 is multiple, and the air inlet of each heat exchange tube group 2 is connected to the air outlet of the main air inlet pipe 1, and the air outlet of each heat exchange tube group 2 is connected to the air inlet of the main return air pipe 3.
[0050] In some embodiments, both the air inlet branch pipe 21 and the air return branch pipe 22 are “L” or “Z” shaped bends to achieve a natural compensation effect and improve the service life of the ash hopper anti-condensation device.
[0051] In this embodiment, multiple sets of heat exchange tubes 2 are symmetrically arranged on both sides of the main air inlet duct 1, see [reference]. Figure 1 and Figure 2 Each heat exchanger tube group 2 contains two inlet branch pipes 21, two return branch pipes 22, and two sets of heat exchanger tube fittings 23; among which,
[0052] The two air inlet branch pipes 21 are L-shaped and Z-shaped respectively, and the two return air branch pipes 22 are L-shaped and Z-shaped respectively;
[0053] One end of the “Z”-shaped air inlet branch pipe 21 is connected to the main air inlet pipe 1, and the end of the “Z”-shaped air inlet branch pipe 21 away from the main air inlet pipe 1 is blocked. Both bends of the “Z”-shaped air inlet branch pipe 21 have a natural compensation function.
[0054] One end of the heat exchanger fitting 23 is connected to a horizontal pipe (the fitting perpendicular to the main air inlet pipe 1) of the “Z”-shaped air inlet branch pipe 21 that is far away from the main air inlet pipe 1;
[0055] The short pipe of the “L”-shaped air inlet branch pipe 21 is connected to a horizontal pipe of the “Z”-shaped air inlet branch pipe 21 near the main air inlet pipe 1. One end of another set of heat exchange pipe fittings 23 is connected to the long pipe of the “L”-shaped air inlet branch pipe 21. The bend of the “L”-shaped air inlet branch pipe 21 has a natural compensation function.
[0056] The arrangement of the two return air branch pipes 22 is the same as that of the two inlet air branch pipes 21;
[0057] The arrangement of the heat exchange tube group 2 described above can make better use of the space in the ash hopper anti-condensation device, thereby reducing the footprint of the ash hopper anti-condensation device.
[0058] In some embodiments, the aforementioned main air inlet duct 1 includes a first duct body 11 and a second duct body 12, see [reference]. Figure 2 ;in,
[0059] The first pipe body 11 and the second pipe body 12 are connected by a pipe compensator 13 to prevent the air inlet main pipe 1 from being damaged due to thermal displacement. The end of the first pipe body 11 away from the second pipe body 12 is connected to the hot air blower, and the second pipe body 12 is connected to the heat exchange tube group 2.
[0060] It is worth noting that the aforementioned return air main duct 3 includes duct body A and duct body B, which are connected by a pipe compensator. The end of duct body A away from duct body B is connected to the dust collector, and multiple return air branch pipes 22 are connected to duct body B. The return air main duct 3 achieves natural compensation through the pipe compensator between duct body A and duct body B, thus avoiding damage to the return air main duct 3 due to thermal displacement.
[0061] In some embodiments, an on / off valve 14 is provided at the end of the first pipe body 11 away from the second pipe body 12, see [link]. Figure 1 and Figure 2 The amount of hot flue gas entering the anti-condensation device of the ash hopper can be controlled by adjusting the opening degree of the on / off valve 14, so as to better control the heat exchange effect of the anti-condensation device of the ash hopper.
[0062] Based on the above-mentioned ash hopper anti-condensation device, this embodiment provides an ash hopper anti-condensation system, see 1 to 2000. Figure 5 It includes ash hopper 4 and the aforementioned ash hopper anti-condensation device;
[0063] The heat exchange tube assembly 2 in the ash hopper anti-condensation device is installed in the ash hopper 4 so that the ash hopper anti-condensation device can heat the air inside the ash hopper 4 to prevent the air in the ash hopper 4 from condensing and combining with the material to form clumps.
[0064] In some embodiments, each ash hopper 4 is provided with at least two sets of heat exchange tube groups 2 to further improve the heat exchange effect of the ash hopper anti-condensation system.
[0065] In this embodiment, the ash hopper 4 has a four-sided pyramidal structure, and two sets of heat exchange tubes 2 are respectively arranged on opposite sides of the ash hopper 4 to better exchange heat with the material in the ash hopper 4, thereby avoiding the situation where the material in the ash hopper 4 clumps together and blocks the ash hopper 4.
[0066] Through the above embodiments, this application has the following beneficial effects or advantages:
[0067] 1) The hot air blower in the ash hopper anti-condensation device can extract the hot flue gas generated during the operation of the belt roaster and send it to the heat exchange tube group 2 through the air inlet main pipe 1 to heat the material in the ash hopper 4, so as to prevent the material in the ash hopper 4 from clumping and blocking the ash hopper 4. The ash hopper anti-condensation device does not require the addition of a dedicated heat source equipment, which reduces the investment in the construction and operation costs of the entire production system, thereby achieving the effect of cost reduction and efficiency improvement.
[0068] 2) The heat exchange pipe 23 in the ash hopper anti-condensation device is an "S" shaped bend, which can prevent the heat exchange pipe 23 from being damaged due to thermal displacement, thereby ensuring the service life of the ash hopper anti-condensation device.
[0069] 3) The main air inlet pipe 1 in the ash hopper anti-condensation device includes a first pipe body 11 and a second pipe body 12, and the first pipe body 11 and the second pipe body 12 are connected by a pipe compensator 13 to prevent the main air inlet pipe 1 from being damaged due to thermal displacement, thereby ensuring the service life of the ash hopper anti-condensation device.
[0070] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0071] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A device for preventing condensation in a dust hopper, characterized in that, It includes an air inlet duct (1), a heat exchange tube assembly (2), and a return air duct (3); The heat exchange tube assembly (2) is used to increase the temperature inside the ash hopper (4); A hot air blower is provided at the air inlet end of the main air inlet pipe (1), and the air inlet of the hot air blower is connected to the working chamber of the belt roaster. The outlet of the return air main (3) is connected to the surrounding environment of the belt roaster through a dust collector, and the outlet of the inlet air main (1) is connected to the inlet of the return air main (3) through the heat exchange tube group (2).
2. The anti-condensation device for ash hoppers according to claim 1, characterized in that, The heat exchange tube assembly (2) includes an inlet branch pipe (21), a return branch pipe (22), and heat exchange tube fittings (23); The heat exchange pipe (23) is a bend, and the two ends of the heat exchange pipe (23) are connected to the main air inlet pipe (1) and the main air return pipe (3) through the air inlet branch pipe (21) and the return air branch pipe (22), respectively.
3. The ash hopper anti-condensation device according to claim 2, characterized in that, The number of heat exchange tubes (23) is multiple, and the multiple heat exchange tubes (23) are arranged along the length direction of the air inlet branch pipe (21).
4. The ash hopper anti-condensation device according to claim 3, characterized in that, The heat exchange tube group (2) is in multiple groups, and the air inlet of each heat exchange tube group (2) is connected to the air outlet of the main air inlet pipe (1), and the air outlet of each heat exchange tube group (2) is connected to the air inlet of the main return air pipe (3).
5. The ash hopper anti-condensation device according to claim 4, characterized in that, The air inlet branch pipe (21) is an "L" or "Z" shaped bend; the air return branch pipe (22) is an "L" or "Z" shaped bend.
6. The ash hopper anti-condensation device according to claim 4, characterized in that, The heat exchange pipe fitting (23) is an "S" shaped bend.
7. The ash hopper anti-condensation device according to any one of claims 1 to 6, characterized in that, The main air inlet pipe (1) includes a first pipe body (11) and a second pipe body (12); The first pipe body (11) and the second pipe body (12) are connected by a pipe compensator (13). The end of the first pipe body (11) away from the second pipe body (12) is connected to the hot air blower, and the second pipe body (12) is connected to the heat exchange tube group (2).
8. The ash hopper anti-condensation device according to claim 7, characterized in that, An on / off valve (14) is provided at the end of the first pipe (11) away from the second pipe (12).
9. A dust hopper anti-condensation system, characterized in that, Includes an ash hopper (4) and an anti-condensation device for the ash hopper as described in any one of claims 1 to 8; The heat exchange tube group (2) in the ash hopper anti-condensation device is installed in the ash hopper (4).
10. The ash hopper anti-condensation system according to claim 9, characterized in that, Each of the ash hoppers (4) is provided with at least two sets of the heat exchange tube groups (2).