Ash bucket anti-condensation device and system

Abstract

The invention discloses an ash bucket anti-condensation device and system.The ash bucket anti-condensation device comprises an air inlet header pipe, a heat exchange pipe set and an air return header pipe; the heat exchange tube group is used for heating materials in the ash hopper; a hot-air blower is arranged at the air inlet end of the air inlet header pipe, and an air inlet of the hot-air blower is communicated with a working cavity of the belt type roasting machine; the air outlet end of the air return header pipe is communicated with the surrounding environment of the belt type roasting machine through the dust remover, and the air outlet end of the air inlet header pipe is communicated with the air inlet end of the air return header pipe through the heat exchange pipe set. The hot-air blower in the dust hopper anti-condensation device can pump out hot smoke generated when the belt type roasting machine works, the hot smoke is conveyed into the heat exchange pipe set through the air inlet header pipe and used for increasing the temperature in the dust hopper, the situation that air dews and blocks when the air is connected with materials is avoided, special heat source equipment does not need to be additionally arranged on the dust hopper anti-condensation device, and the dust hopper anti-condensation device is simple in structure and convenient to use. And the investment of construction and operation cost of the whole production system is reduced, so that the effects of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of dust removal equipment, and specifically relates to an ash hopper anti-condensation device and system. Background Art

[0002] In winter or cold environments, the materials in the hopper are easily affected by low temperatures. When the temperature of the material is lower than its dew point, condensation will form water droplets on the surface of the material. These water droplets will combine with the material to form lumps, affecting the fluidity and conveying efficiency of the material. In addition, if the material in the hopper is severely lumped, it may also cause the hopper to be blocked, affecting the normal production.

[0003] At present, the dust collector hopper is mostly heated by electric heating or steam heating to increase the temperature of the material in the hopper and avoid condensation or agglomeration of the material in the hopper.

[0004] However, electric heating has the problem of uneven heating, and it is still easy for materials to agglomerate, resulting in blockage of the ash hopper.

[0005] However, in engineering construction, some factories cannot provide steam for heating, and adding steam equipment (heat source equipment) alone will lead to a significant increase in the cost of the project. Therefore, inventing a low-cost ash hopper anti-condensation device is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] In order to solve the above technical problems, the present application provides an ash hopper anti-condensation device on the one hand, so as to solve the technical problem of high cost of the heating device in the prior art.

[0007] The technical solution adopted to achieve the purpose of this application is:

[0008] An anti-condensation device for an ash hopper comprises an air inlet main pipe, a heat exchange pipe group and a return air main pipe;

[0009] The heat exchange tube group is used to heat the materials in the ash hopper;

[0010] A hot air blower is provided at the air inlet end of the air inlet main pipe, and the air inlet of the hot air blower is connected to the working chamber of the belt roasting machine;

[0011] The air outlet end of the return air main pipe is connected to the surrounding environment of the belt roasting machine through a dust collector, and the air outlet end of the inlet air main pipe is connected to the inlet end of the return air main pipe through the heat exchange tube group.

[0012] In order to better realize the present application, further optimization is made in the above structure, wherein the heat exchange tube group includes an air inlet branch pipe, an air return branch pipe and a heat exchange pipe fitting;

[0013] The heat exchange pipe is a bent pipe, and both ends of the heat exchange pipe are connected to the air inlet main pipe and the air return main pipe through the air inlet branch pipe and the air return branch pipe respectively.

[0014] In order to better realize the present application, further optimization is made in the above structure, the number of the heat exchange pipe fittings is multiple, and the multiple heat exchange pipe fittings are arranged along the length direction of the air inlet branch pipe.

[0015] In order to better realize the present application, further optimization is made in the above structure, the number of the heat exchange tube groups is multiple, the air inlet ends of the multiple groups of heat exchange tube groups are connected to the air outlet ends of the air inlet main duct, and the air outlet ends of the multiple groups of heat exchange tube groups are connected to the air inlet end of the return air main duct.

[0016] In order to better realize the present application, further optimization is made in the above structure, the air inlet branch pipe is an "L"-shaped or "Z"-shaped curved pipe; the return air branch pipe is an "L"-shaped or "Z"-shaped curved pipe.

[0017] In order to better realize the present application, further optimization is made in the above structure, and the heat exchange pipe is an "S"-shaped elbow.

[0018] In order to better realize the present application, further optimization is made in the above structure, the air inlet main pipe includes a first pipe body and a second pipe body;

[0019] The first tube body and the second tube body are connected through a pipeline compensator, one end of the first tube body away from the second tube body is connected to the hot air blower, and the second tube body is connected to the heat exchange tube group.

[0020] In order to better implement the present application, further optimization is made in the above structure, and an opening and closing valve is provided at one end of the first tube body away from the second tube body.

[0021] On the other hand, the present application also provides an ash hopper anti-condensation system, which includes an ash hopper and the above-mentioned ash hopper anti-condensation device;

[0022] The heat exchange tube group in the ash hopper anti-condensation device is arranged in the ash hopper.

[0023] In order to better realize the present application, further optimization is made in the above structure, and at least two groups of heat exchange tube groups are arranged in each ash hopper.

[0024] It can be seen from the above technical scheme that the hot air blower in the ash hopper anti-condensation device provided in the present application can extract the hot flue gas generated when the belt roasting machine is working, and send it to the heat exchange tube group through the air inlet main pipe, so as to increase the temperature in the ash hopper and avoid condensation of air and agglomeration caused by the combination with the material. The ash hopper anti-condensation device does not require the addition of special heat source equipment, thereby reducing the investment in the construction and operation costs of the entire production system, thereby achieving the effect of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of an anti-condensation device for an ash hopper in this application

[0026] Figure 2 This is a top view of an anti-condensation device for an ash hopper of the present application;

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle A part;

[0028] Figure 4 This is a connection diagram between a heat exchange tube group and an ash hopper in an ash hopper anti-condensation device of the present application;

[0029] Figure 5 This is a structural schematic diagram of an ash hopper anti-condensation system for this application.

[0030] Description of reference numerals:

[0031] 1-air inlet main pipe, 11-first pipe body, 12-second pipe body, 13-pipeline compensator; 14-opening and closing valve;

[0032] 2-heat exchange tube group, 21-air inlet branch pipe, 22-return air branch pipe, 23-heat exchange pipe fittings;

[0033] 3-Return air main;

[0034] 4- Ash hopper. DETAILED DESCRIPTION

[0035] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0036] In the embodiments of the present application, Figures 1 to 4 As shown, the ash hopper anti-condensation device includes an air inlet main pipe 1, a heat exchange tube group 2 and a return air main pipe 3; wherein,

[0037] The heat exchange tube group 2 is arranged in the ash hopper 4 to increase the temperature of the air in the ash hopper 4 to prevent the air in the ash hopper 4 from condensing and bonding with the material to form agglomerates;

[0038] A hot air blower (not shown) is provided at the air inlet end of the air inlet main pipe 1, and the air inlet of the hot air blower is connected to the working chamber of the belt roaster;

[0039] The air outlet end of the return air main pipe 3 is connected to the surrounding environment of the belt roaster through a dust collector (not shown in the figure), and the air outlet end of the inlet air main pipe 1 is connected to the air inlet end of the return air main pipe 3 through the heat exchange tube group 2.

[0040] When the ambient temperature is low and materials are passing through the ash hopper 4 (i.e., the dust removal device is in working condition), the staff 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 in 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 hot flue gas passes through the heat exchange tube group 2 to heat the temperature of the air in the ash hopper 4, so as to avoid the air in the ash hopper 4 from condensing and bonding with the materials to form agglomerates.

[0041] The flue gas after heat exchange can be discharged to the surrounding environment through the dust collector to avoid 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 (the belt roasting machine in this application) when it is working, and there is no need to add dedicated heat source equipment separately, thereby reducing the investment in the construction and operation costs of the entire production system, thereby achieving the effect of reducing costs and increasing efficiency.

[0043] In addition, the hot flue gas from the working chamber of the belt roaster is led out and utilized, which can improve the energy utilization rate of the entire production system, thereby achieving the effect of energy saving and environmental protection.

[0044] In some embodiments, the heat exchange tube group 2 includes an air inlet branch pipe 21, a return air branch pipe 22 and a heat exchange pipe 23. Figure 3 and Figure 4 ;in,

[0045] The heat exchange fitting 23 is an "S"-shaped natural compensation connection method, that is, the heat exchange fitting 23 is a bent pipe, which can prevent the heat exchange 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 exchange fitting 23 are connected to the air inlet main pipe 1 and the return air main pipe 3 through the air inlet branch pipe 21 and the return air branch pipe 22 respectively.

[0046] In addition, the “S”-shaped heat exchange pipe 23 can also increase the contact area between the heat exchange pipe 23 and the material, thereby improving the heat exchange effect of the heat exchange pipe 23 .

[0047] In some embodiments, the number of the above-mentioned heat exchange pipes 23 is multiple, and the multiple heat exchange pipes 23 are arranged at intervals along the length direction of the air inlet branch pipe 21 to form a material heat exchange surface. Two adjacent heat exchange pipes 23 do not contact each other 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 the ash hopper 4 is a funnel-shaped structure with a large top and a small bottom, see Figure 4 The arrangement of the 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, thereby more evenly exchanging heat with the material in the ash hopper 4.

[0049] Preferably, the number of the above-mentioned heat exchange tube groups 2 is multiple, the air inlet ends of the multiple heat exchange tube groups 2 are connected to the air outlet ends of the air inlet main pipe 1, and the air outlet ends of the multiple heat exchange tube groups 2 are connected to the air inlet end of the return air main pipe 3.

[0050] In some embodiments, the air inlet branch pipe 21 and the air return branch pipe 22 are both "L"-shaped or "Z"-shaped curved pipes to achieve a natural compensation effect and increase the service life of the ash hopper anti-condensation device;

[0051] In this embodiment, multiple groups of heat exchange tube groups 2 are symmetrically arranged on both sides of the air inlet main pipe 1. Figure 1 and Figure 2 Each heat exchange tube group 2 has two air inlet branches 21, two air return branches 22 and two groups of heat exchange tubes 23; wherein,

[0052] The two air inlet branches 21 are respectively "L"-shaped and "Z"-shaped, and the two air return branches 22 are respectively "L"-shaped and "Z"-shaped;

[0053] One end of the "Z"-shaped air inlet branch pipe 21 is connected to the air inlet main pipe 1, and the end of the "Z"-shaped air inlet branch pipe 21 away from the air inlet main pipe 1 is in a blocked state. Both bends of the "Z"-shaped air inlet branch pipe 21 have a natural compensation effect.

[0054] One end of the heat exchange pipe 23 is connected to a horizontal pipe (a pipe perpendicular to the air inlet main pipe 1) of the "Z"-shaped air inlet branch pipe 21 away from the air inlet main pipe 1;

[0055] The short tube of the "L"-shaped air inlet branch pipe 21 is connected to a horizontal tube of the "Z"-shaped air inlet branch pipe 21 close to the air inlet main pipe 1, and one end of another group of heat exchange pipes 23 is connected to the long tube of the "L"-shaped air inlet branch pipe 21. The bend of the "L"-shaped air inlet branch pipe 21 has a natural compensation effect;

[0056] The arrangement of the two return air branch pipes 22 is the same as the arrangement of the two inlet air branch pipes 21;

[0057] The above-mentioned arrangement of the heat exchange tube group 2 can better utilize the space in the ash hopper anti-condensation device to reduce the floor space of the ash hopper anti-condensation device.

[0058] In some embodiments, the air intake manifold 1 includes a first tube body 11 and a second tube body 12. Figure 2 ;in,

[0059] The first tube body 11 and the second tube body 12 are connected through a pipe compensator 13 to prevent the air inlet main pipe 1 from being damaged due to thermal displacement. The end of the first tube body 11 away from the second tube body 12 is connected to the hot air blower, and the second tube body 12 is connected to the heat exchange tube group 2.

[0060] It is worth noting that the above-mentioned return air main duct 3 includes a tube body A and a tube body B, and the tube body A and the tube body B are connected through a pipe compensator, and the end of the tube body A away from the tube body B is connected to the dust collector, and multiple return air branch pipes 22 are connected to the tube body B; the return air main duct 3 achieves natural compensation through the pipe compensator between the tube body A and the tube body B, thereby avoiding the return air main duct 3 being damaged due to thermal displacement.

[0061] In some embodiments, an opening and closing valve 14 is disposed at one end of the first tube body 11 away from the second tube body 12, see Figure 1 and Figure 2 The staff can control the amount of hot flue gas entering the ash hopper anti-condensation device by adjusting the opening of the on-off valve 14 to better control the heat exchange effect of the ash hopper anti-condensation device.

[0062] Based on the above-mentioned ash hopper anti-condensation device, this embodiment provides an ash hopper anti-condensation system, see, 1 to Figure 5 , which includes an ash hopper 4 and the above-mentioned ash hopper anti-condensation device;

[0063] The heat exchange tube group 2 in the ash hopper anti-condensation device is arranged 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 agglomerates.

[0064] In some embodiments, at least two groups of heat exchange tube groups 2 are provided in each ash hopper 4 to further improve the heat exchange effect of the ash hopper anti-condensation system;

[0065] In this embodiment, the ash hopper 4 is a quadrangular pyramid structure, and two groups of heat exchange tube groups 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 preventing the material in the ash hopper 4 from agglomerating and clogging the ash hopper 4.

[0066] Through the above embodiments, the present 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 when the belt roaster is working, 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 agglomerating and clogging the ash hopper 4. The ash hopper anti-condensation device does not need to add special heat source equipment, reduces the investment in the construction and operation costs of the entire production system, and thus achieves the effect of reducing costs and increasing efficiency.

[0068] 2) The heat exchange pipe 23 in the ash hopper anti-condensation device is an "S"-shaped elbow, 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 air inlet main pipe 1 in the ash hopper anti-condensation device includes a first tube body 11 and a second tube body 12, and the first tube body 11 and the second tube body 12 are connected through a pipeline compensator 13 to prevent the air inlet main pipe 1 from being damaged due to thermal displacement, thereby ensuring the service life of the ash hopper anti-condensation device.

[0070] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0071] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An anti-condensation device for an ash hopper, characterized in that: It comprises an air inlet main pipe (1), a heat exchange tube group (2) and an air return main pipe (3); The heat exchange tube group (2) is used to increase the temperature in the ash hopper (4); The air inlet end of the air inlet main pipe (1) is provided with a hot air blower, and the air inlet of the hot air blower is connected to the working chamber of the belt roasting machine; The air outlet end of the return air main pipe (3) is connected to the surrounding environment of the belt roasting machine through a dust collector, and the air outlet end of the inlet air main pipe (1) is connected to the inlet end of the return air main pipe (3) through the heat exchange tube group (2).

2. The ash hopper anti-dew condensation device according to claim 1, characterized in that: The heat exchange tube group (2) comprises an air inlet branch pipe (21), an air return branch pipe (22) and a heat exchange pipe member (23); The heat exchange pipe (23) is a bent pipe, and the two ends of the heat exchange pipe (23) are respectively 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).

3. The ash hopper anti-dew condensation device according to claim 2, characterized in that: The number of the heat exchange pipes (23) is multiple, and the multiple heat exchange pipes (23) are arranged along the length direction of the air inlet branch pipe (21).

4. The ash hopper anti-dew condensation device according to claim 3, characterized in that: The number of the heat exchange tube groups (2) is multiple, the air inlet ends of the multiple heat exchange tube groups (2) are all connected to the air outlet ends of the air inlet main pipe (1), and the air outlet ends of the multiple heat exchange tube groups (2) are all connected to the air inlet ends of the return air main pipe (3).

5. The ash hopper anti-dew condensation device according to claim 4, characterized in that: The air inlet branch pipe (21) is an "L"-shaped or "Z"-shaped curved pipe; the air return branch pipe (22) is an "L"-shaped or "Z"-shaped curved pipe.

6. The ash hopper anti-dew condensation device according to claim 4, characterized in that: The heat exchange pipe (23) is an "S"-shaped elbow.

7. The ash hopper anti-condensation device according to any one of claims 1 to 6, characterized in that: The air intake main pipe (1) comprises a first pipe body (11) and a second pipe body (12); The first tube body (11) and the second tube body (12) are connected via a pipeline compensator (13); an end of the first tube body (11) away from the second tube body (12) is connected to the hot air blower; and the second tube body (12) is connected to the heat exchange tube group (2).

8. The ash hopper anti-dew condensation device according to claim 7, characterized in that: An opening and closing valve (14) is provided at one end of the first tube body (11) away from the second tube body (12).

9. An anti-condensation system for ash hopper, characterized in that: It comprises an ash hopper (4) and an ash hopper anti-condensation device according to any one of claims 1 to 8; The heat exchange tube group (2) in the ash hopper anti-condensation device is arranged in the ash hopper (4).

10. The ash hopper anti-dew condensation system according to claim 9, characterized in that: At least two groups of heat exchange tube groups (2) are arranged in each ash hopper (4).

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