Heat exchange device for drying finished products by using waste heat of rotary kiln for barium sulfate production

Abstract

The utility model relates to the technical field of barium sulfate heat exchange devices, and discloses a heat exchange device for drying finished products by using waste heat of a rotary kiln for barium sulfate production, which comprises a rotary kiln heat exchange structure, and a waste heat recovery structure is arranged in the rotary kiln heat exchange structure; the rotary kiln heat exchange structure comprises a rotary kiln, a connecting pipe is arranged at the top of the rotary kiln, a heat exchange device is arranged at the bottom of the connecting pipe, a heat exchanger is arranged in the heat exchange device, and a waste heat storage device is arranged at the bottom of the heat exchanger. According to the heat exchange device for drying the finished product through the waste heat of the rotary kiln for barium sulfate production, the waste heat recycling structure is used for recycling and reusing the waste heat which is not used in the drying machine, the energy utilization rate is increased, the production cost is reduced, meanwhile, the temperature control system can accurately control the temperature of the waste heat storage container, and the product quality is improved. And the stability and safety of waste heat storage are ensured, and a stable heat source is provided for subsequent drying operation.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange devices for barium sulfate, in particular to a heat exchange device for drying finished products using waste heat from a rotary kiln in the production of barium sulfate. Background Art

[0002] During the production of barium sulfate, the rotary kiln will generate a large amount of waste heat. Through the heat exchange device, this part of the waste heat can be recycled to improve energy utilization efficiency, reduce production costs, and play a role and significance in ensuring product quality and promoting environmental protection.

[0003] At present, the energy utilization rate of the existing rotary kiln waste heat utilization device for barium sulfate production is low. For example, the existing heat exchange device for finished product drying does not have a device for recovering waste heat, resulting in a large amount of waste heat being wasted. In addition, the existing rotary kiln waste heat utilization device for barium sulfate production lacks a device for temperature control, resulting in unstable waste heat storage, which may cause large temperature fluctuations in the waste heat storage container, affecting the waste heat utilization effect. Therefore, the utility model provides a heat exchange device for using the waste heat of the rotary kiln for barium sulfate production to dry the finished product. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a heat exchange device for drying finished products using the waste heat of a rotary kiln used in barium sulfate production, which has the advantages of high energy utilization and stable temperature control, and solves the problems of low energy utilization and unstable temperature control.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned high energy utilization rate and stable temperature control purpose, the utility model provides the following technical solutions:

[0008] A heat exchange device for drying finished products using waste heat from a rotary kiln in barium sulfate production, comprising a rotary kiln heat exchange structure, wherein a waste heat recovery structure is provided inside the rotary kiln heat exchange structure;

[0009] The rotary kiln heat exchange structure comprises a rotary kiln, a connecting pipe is provided at the top of the rotary kiln, a heat exchange device is provided at the bottom of the connecting pipe, a heat exchanger is provided inside the heat exchange device, a waste heat storage device is provided at the bottom of the heat exchanger, a drying room is provided at the bottom of the waste heat storage device, a dryer is provided on the right side of the drying room, and a dust collector is provided on the top of the dryer;

[0010] The waste heat recovery structure includes a waste heat recovery device located on the right side of the dryer, a ventilation fan is provided on the left side of the waste heat recovery device, a water inlet is provided on the top of the waste heat recovery device, and an insulation water tank is provided at the bottom of the waste heat recovery device.

[0011] As an optimal technical solution of the utility model, a water pump is provided at the bottom of the water inlet, an insulation pipe is provided on the left side of the insulation water tank, the top of the insulation pipe is connected to the bottom of the waste heat recovery device, an air outlet channel is provided on the right side of the waste heat recovery device, and the right side of the air outlet channel is connected to the rotary kiln.

[0012] As an optimal technical solution of the utility model, a waste heat collector is provided on the top of the inner wall of the waste heat storage device, a waste heat storage container is provided at the bottom of the waste heat collector, a temperature control system is provided on the left and right sides of the waste heat storage container, and an insulation layer is provided on the inner wall of the drying room.

[0013] As an optimal technical solution of the utility model, the connecting pipe is connected to the rotary kiln and the heat exchange device by a snap-on method, an exhaust fan is provided at the connection between the connecting pipe and the heat exchange device, the bottom of the exhaust fan is connected to the heat exchanger, and the heat exchanger is connected to the top of the left side of the inner wall of the heat exchange device by a threaded connection.

[0014] As a preferred technical solution of the utility model, a first gas pipe is provided on the top of the waste heat storage device, a second gas pipe is provided on the right side of the drying room, two connecting ports are provided on the left side of the second gas pipe, the connecting ports are respectively connected to the waste heat storage device and the drying room, and the right side of the second gas pipe is connected to the dryer.

[0015] As an optimal technical solution of the utility model, a third air pipe is provided on the right side of the dust collector, and the right side of the third air pipe is connected to the rotary kiln. The third air pipe is connected to the rotary kiln and the dust collector by a snap-on method, and the dust collector is connected to the top of the right side of the heat exchange device by a threaded connection.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a heat exchange device for drying finished products using waste heat from a rotary kiln in barium sulfate production, which has the following beneficial effects:

[0018] The heat exchange device for drying the finished product using the waste heat from the rotary kiln in the production of barium sulfate can recover and reuse the unused waste heat in the dryer through the use of the waste heat recovery structure, thereby improving the utilization rate of energy and reducing production costs. At the same time, the temperature control system can accurately control the temperature of the waste heat storage container to ensure the stability and safety of waste heat storage and provide a stable heat source for subsequent drying operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the waste heat recovery structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the waste heat storage device of the utility model.

[0022] In the figure: 1. rotary kiln; 2. connecting pipe; 3. heat exchange device; 4. heat exchanger; 5. waste heat storage device; 6. drying room; 7. dryer; 8. dust collector; 9. waste heat recovery device; 10. ventilation fan; 11. water inlet; 12. insulation water tank; 13. water pump; 14. insulation pipe; 15. air outlet channel; 16. waste heat collector; 17. waste heat storage container; 18. temperature control system; 19. insulation layer; 20. exhaust fan; 21. first gas pipeline; 22. second gas pipeline; 23. third gas pipeline. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-3 , a heat exchange device for drying finished products using waste heat from a rotary kiln in barium sulfate production, comprising a rotary kiln heat exchange structure, wherein a waste heat recovery structure is provided inside the rotary kiln heat exchange structure;

[0027] Embodiment 1, the rotary kiln heat exchange structure comprises a rotary kiln 1, a connecting pipe 2 is provided at the top of the rotary kiln 1, a heat exchange device 3 is provided at the bottom of the connecting pipe 2, a heat exchanger 4 is provided inside the heat exchange device 3, a waste heat storage device 5 is provided at the bottom of the heat exchanger 4, a drying room 6 is provided at the bottom of the waste heat storage device 5, a dryer 7 is provided on the right side of the drying room 6, and a dust collector 8 is provided on the top of the dryer 7;

[0028] In this embodiment, a waste heat collector 16 is provided at the top of the inner wall of the waste heat storage device 5, a waste heat storage container 17 is provided at the bottom of the waste heat collector 16, a temperature control system 18 is provided on the left and right sides of the waste heat storage container 17, and an insulation layer 19 is provided on the inner wall of the drying room 6, wherein the waste heat storage device 5 is used to store the waste heat generated by the rotary kiln 1, and when necessary, the waste heat can be used for heating and drying other equipment to improve energy utilization; the waste heat collector 16 is used to collect the waste heat in the waste heat storage device 5 and store it through the waste heat storage container 17; the temperature control system 18 is used to control the temperature of the waste heat storage container to keep it stable; the insulation layer 19 is used to keep the temperature of the drying room 6 stable to prevent heat loss.

[0029] In this embodiment, the connecting pipe 2 is connected to the rotary kiln 1 and the heat exchange device 3 by a snap-on method. An exhaust fan 20 is provided at the connection between the connecting pipe 2 and the heat exchange device 3. The bottom of the exhaust fan 20 is connected to the heat exchanger 4. The heat exchanger 4 is connected to the top of the left side of the inner wall of the heat exchange device 3 by a threaded connection. The heat exchanger 4 converts the waste heat of the rotary kiln 1 into thermal energy by heat conduction. This thermal energy can be used for heating and drying other equipment. The exhaust fan 20 is used to transfer the waste heat generated by the rotary kiln 1 to the heat exchange device 3 through the connecting pipe 2.

[0030] In this embodiment, a first air pipe 21 is provided on the top of the waste heat storage device 5, a second air pipe 22 is provided on the right side of the drying room 6, and two connecting ports are provided on the left side of the second air pipe 22, which are respectively connected to the waste heat storage device 5 and the drying room 6, and the right side of the second air pipe 22 is connected to the dryer 7, wherein the first air pipe 21 transports the waste heat in the waste heat storage device 5 to the drying room 6; the second air pipe 22 transports the air in the waste heat storage device 5 and the drying room 6 to the dryer 7 for drying.

[0031] In this embodiment, a third air pipe 23 is provided on the right side of the dust collector 8, and the right side of the third air pipe 23 is connected to the rotary kiln 1. The third air pipe 23 is connected to the rotary kiln 1 and the dust collector 8 by a snap-on method, and the dust collector 8 is connected to the top of the right side of the heat exchange device 3 by a threaded connection. The third air pipe 23 connects the rotary kiln 1 and the dust collector 8, so that pollutants such as dust generated by the rotary kiln 1 can be collected and processed by the dust collector 8.

[0032] It should be noted that the dryer 7 is used to further heat and dry the finished barium sulfate product. By transferring the waste heat in the waste heat storage device 5 to the dryer 7, the energy utilization rate can be improved; the dust collector 8 is used to collect pollutants such as dust generated during the drying process to keep the environment clean.

[0033] In the second embodiment, the waste heat recovery structure also includes a waste heat recovery device 9 located on the right side of the dryer 7, a ventilation fan 10 is provided on the left side of the waste heat recovery device 9, a water inlet 11 is provided on the top of the waste heat recovery device 9, and an insulation water tank 12 is provided at the bottom of the waste heat recovery device 9, wherein the waste heat recovery device 9 is used to recover unused waste heat in the dryer 7, and this heat can be discharged through the ventilation fan 10 and transported to the insulation water tank 12 through the water inlet 11 for storage.

[0034] In this embodiment, a water pump 13 is provided at the bottom of the water inlet 11, an insulation pipe 14 is provided on the left side of the insulation water tank 12, the top of the insulation pipe 14 is connected to the bottom of the waste heat recovery device 9, and an air outlet channel 15 is provided on the right side of the waste heat recovery device 9, and the right side of the air outlet channel 15 is connected to the rotary kiln 1, wherein the insulation water tank 12 is used to store water heated by the waste heat recovery device 9, and the water temperature is kept stable by the insulation pipe; the air outlet channel 15 connects the waste heat recovery device 9 and the rotary kiln 1, so that the waste heat can be transported to the rotary kiln 1 through the air outlet channel 15.

[0035] The working principle of the above embodiment is:

[0036] See also Figure 1-3 When the utility model performs heat exchange, first, the raw materials are heated and reacted through the rotary kiln 1 to generate barium sulfate. In this process, the rotary kiln 1 will generate a large amount of waste heat. The waste heat generated by the rotary kiln 1 is transmitted to the heat exchange device 3 through the connecting pipe 2. The heat exchange device 3 receives the waste heat from the connecting pipe 2 and converts the waste heat into thermal energy through the heat exchanger 4. The converted thermal energy is stored through the waste heat storage device 5. The stored waste heat will be transported to the drying room 6. The drying room 6 can maintain the quality and dryness of the finished product. Then the waste heat in the waste heat storage device 5 and the drying room 6 will be transported to the dryer 7. The dryer 7 is used to further heat and dry the barium sulfate finished product. In this project, the waste heat recovery device 9 is used to recover the unused waste heat in the dryer 7. At the same time, the dust collector 8 collects pollutants such as dust generated during the drying process. After heating and drying are completed, the air outlet channel 15 enables the waste heat to be transported to the rotary kiln 1.

[0037] Beneficial effects of the above embodiments:

[0038] The heat exchange device for drying the finished product using the waste heat of the rotary kiln used in the production of barium sulfate can recover and reuse the unused waste heat in the dryer 7 through the use of the waste heat recovery structure, thereby improving the utilization rate of energy and reducing production costs. At the same time, the temperature control system 18 can accurately control the temperature of the waste heat storage container 17 to ensure the stability and safety of waste heat storage and provide a stable heat source for subsequent drying operations.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device for drying finished products using waste heat from a rotary kiln in barium sulfate production, comprising a rotary kiln heat exchange structure, wherein a waste heat recovery structure is provided inside the rotary kiln heat exchange structure; Features: The rotary kiln heat exchange structure comprises a rotary kiln (1), wherein a connecting pipe (2) is provided at the top of the rotary kiln (1), a heat exchange device (3) is provided at the bottom of the connecting pipe (2), a heat exchanger (4) is provided inside the heat exchange device (3), a waste heat storage device (5) is provided at the bottom of the heat exchanger (4), a drying room (6) is provided at the bottom of the waste heat storage device (5), a drying machine (7) is provided on the right side of the drying room (6), and a dust collector (8) is provided at the top of the drying machine (7); The waste heat recovery structure comprises a waste heat recovery device (9) located on the right side of the dryer (7), a ventilation fan (10) is provided on the left side of the waste heat recovery device (9), a water inlet (11) is provided on the top of the waste heat recovery device (9), and a heat preservation water tank (12) is provided on the bottom of the waste heat recovery device (9).

2. The heat exchange device for drying finished products using waste heat from a rotary kiln for barium sulfate production according to claim 1, characterized in that: A water pump (13) is provided at the bottom of the water inlet (11), a heat preservation pipe (14) is provided on the left side of the heat preservation water tank (12), the top of the heat preservation pipe (14) is connected to the bottom of the waste heat recovery device (9), an air outlet channel (15) is provided on the right side of the waste heat recovery device (9), and the right side of the air outlet channel (15) is connected to the rotary kiln (1).

3. The heat exchange device for drying finished products using waste heat from a rotary kiln for barium sulfate production according to claim 1, characterized in that: A waste heat collector (16) is provided at the top of the inner wall of the waste heat storage device (5), a waste heat storage container (17) is provided at the bottom of the waste heat collector (16), a temperature control system (18) is provided on the left and right sides of the waste heat storage container (17), and a heat preservation layer (19) is provided on the inner wall of the drying room (6).

4. The heat exchange device for drying finished products using waste heat from a rotary kiln for barium sulfate production according to claim 1, characterized in that: The connecting pipe (2) is connected to the rotary kiln (1) and the heat exchange device (3) by means of a snap connection. An exhaust fan (20) is provided at the connection between the connecting pipe (2) and the heat exchange device (3). The bottom of the exhaust fan (20) is connected to the heat exchanger (4). The heat exchanger (4) is connected to the top of the left side of the inner wall of the heat exchange device (3) by means of a threaded connection.

5. The heat exchange device for drying finished products using waste heat from a rotary kiln for barium sulfate production according to claim 1, characterized in that: A first gas pipe (21) is provided on the top of the waste heat storage device (5), a second gas pipe (22) is provided on the right side of the drying room (6), two connecting ports are provided on the left side of the second gas pipe (22), the connecting ports are respectively connected to the waste heat storage device (5) and the drying room (6), and the right side of the second gas pipe (22) is connected to the dryer (7).

6. The heat exchange device for drying finished products using waste heat from a rotary kiln for barium sulfate production according to claim 1, characterized in that: A third air supply pipe (23) is provided on the right side of the dust collector (8), and the right side of the third air supply pipe (23) is connected to the rotary kiln (1). The third air supply pipe (23) is connected to the rotary kiln (1) and the dust collector (8) by means of a snap connection, and the dust collector (8) is connected to the top of the right side of the heat exchange device (3) by means of a threaded connection.

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