Waste heat recovery treatment device for rotary kiln

Abstract

The utility model discloses a rotary kiln waste heat recovery processing device, which relates to the technical field of rotary kiln waste heat recovery and comprises a waste heat recovery device main body, a baffle movably penetrates through the top of the waste heat recovery device main body, and a connecting frame is detachably mounted at the bottom of the waste heat recovery device main body. And a mounting frame is detachably mounted in the connecting frame, a heat conduction pipe is connected into the mounting frame in a penetrating mode, and first heat conduction fins are detachably mounted on the outer side of the heat conduction pipe. According to the rotary kiln waste heat recovery treatment device, the flow direction of waste heat is changed through the arranged baffle, the waste heat enters the connecting frame to heat cold water conveyed from the heat conduction pipe, and compared with waste heat wasted in the preheating tower by a traditional waste heat recovery device body, the waste heat is fully utilized by adding a heating source, so that the waste heat recovery efficiency is improved. And a heating source is additionally arranged for the waste heat recovery device body through the arranged heat collection ring, heat dissipated from the outer side of the rotary kiln body is recycled, and heat waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery of rotary kilns, in particular to a waste heat recovery and treatment device for rotary kilns. Background Technique

[0002] The rotary kiln is similar in shape to a rotary bed, also called a rotary bed kiln, belonging to the building materials equipment category. It mainly consists of a kiln head, a kiln body, a kiln tail, a rotary bed kiln support frame, a preheating tower, a cooler and a conveyor belt. Among them, the preheating tower, also called a preheater, is a device that preliminarily heats materials by the waste heat of the tail gas discharged from the rotary bed kiln before the materials enter the rotary bed kiln. It is mostly of a vertical structure. Its principle is to realize the heating process of raw materials by passing the waste heat discharged from the kiln tail of the rotary bed kiln through the preheating tower filled with raw materials. In addition, the preheating tower can effectively reduce energy consumption and improve the quality grade of finished products.

[0003] However, the existing waste heat recovery and treatment device for rotary kilns has a single function. Before the rotary kiln stops, there is no need to preheat the raw materials again, resulting in waste of waste heat. Moreover, when the rotary kiln is working, a large amount of heat will also be dissipated from the heated part of the kiln body, and the waste heat is not fully utilized. In order to solve the deficiencies of the existing technology, we propose a waste heat recovery and treatment device for rotary kilns. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a waste heat recovery and treatment device for rotary kilns, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A waste heat recovery and treatment device for rotary kilns, including a main body of the waste heat recovery device. A baffle is movably penetrated through the top of the main body of the waste heat recovery device. A connecting frame is detachably installed at the bottom of the main body of the waste heat recovery device. An installation frame is detachably installed inside the connecting frame. A heat conduction tube is penetrated and connected inside the installation frame. A first heat conduction fin is detachably installed on the outer side of the heat conduction tube. One end of the heat conduction tube is penetrated and connected to one side of the installation frame, and the end of the heat conduction tube penetrating the installation frame is penetrated and connected to one side of the connecting frame. A filter plate is detachably installed on one side of the inner wall of the connecting frame. A connecting pipe is detachably installed on the other side of the connecting frame. A heat collecting ring is detachably installed at one end of the connecting pipe. A through hole is opened at the top of the heat collecting ring. An air extraction fan is detachably installed inside the through hole opened in the heat collecting ring. A heat preservation sleeve is rotatably connected to one side of the heat collecting ring. A second heat conduction fin is detachably installed inside the heat preservation sleeve. A heat conduction sleeve is detachably installed inside the second heat conduction fin.

[0007] Preferably, a preheating tower is detachably installed at one end of the main body of the waste heat recovery device. A feeding hopper is detachably installed at the top of the preheating tower. A rotary kiln body is rotatably connected to one side of the preheating tower. The outer side of the rotary kiln body is detachably installed with the inner side of the heat conduction sleeve, and the outer side of the rotary kiln body is rotatably connected to one side of the inner wall of the heat collection ring.

[0008] Preferably, a limiting plate is detachably installed on one side of the baffle plate, and the length of the limiting plate is the same as that of the baffle plate.

[0009] Preferably, an inlet is provided at the top of the connecting frame, and an outlet is provided at one side of the bottom of the main body of the waste heat recovery device. The outlet provided in the main body of the waste heat recovery device communicates with the inlet provided in the connecting frame.

[0010] Preferably, one end of the connecting pipe communicates with the inside of the connecting frame, and the other end of the connecting pipe communicates with the inside of the heat collection ring.

[0011] Preferably, one end of the main body of the waste heat recovery device communicates with the inside of the preheating tower, and the inside of the preheating tower communicates with one end of the rotary kiln body.

[0012] Beneficial effects

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. In the present utility model, by setting the baffle plate to change the flow direction of the waste heat, the waste heat enters the connecting frame to heat the cold water conveyed in the heat conduction pipe. Compared with the waste heat wasted in the preheating tower by the traditional waste heat recovery device main body, by adding a heating source, the waste heat is fully utilized. The cold water heated in the heat conduction pipe can be output to other workshops as a constant temperature hot water source, and the waste heat utilization is more sufficient, and the functionality of the waste heat recovery device main body is stronger.

[0015] 2. In the present utility model, by setting the heat collection ring to add a heat source to the waste heat recovery device main body, the heat dissipated from the outer side of the rotary kiln body is also recovered and utilized, reducing heat waste and also reducing the ambient temperature around the rotary kiln body, improving the working environment. Description of the drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the overall split structural schematic diagram of the present utility model;

[0018] Figure 3 is the exploded view of the connecting frame of the present utility model;

[0019] Figure 4 is the split structural schematic diagram of the heat collection ring of the present utility model.

[0020] In the figure: 1. Main body of the waste heat recovery device; 2. Baffle; 3. Connection frame; 4. Installation frame; 5. Heat conduction pipe; 6. First heat conduction fin; 7. Filter plate; 8. Connection pipe; 9. Heat collection ring; 10. Exhaust fan; 11. Heat preservation sleeve; 12. Second heat conduction fin; 13. Heat conduction sleeve; 14. Preheating tower; 15. Feeding hopper; 16. Rotary kiln body; 17. Limiting plate. Specific implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0022] As Figures 1-3 shown, a rotary kiln waste heat recovery and treatment device includes a main body 1 of the waste heat recovery device. A baffle 2 is movably penetrated through the top of the main body 1 of the waste heat recovery device. A connection frame 3 is detachably installed at the bottom of the main body 1 of the waste heat recovery device. When the last batch of raw materials is being processed in the rotary kiln body 16 and there is no raw material in the preheating tower 14, by pushing the baffle 2 into the main body 1 of the waste heat recovery device, the waste heat from the tail of the rotary kiln body 16 transported to the preheating tower 14 by the main body 1 of the waste heat recovery device is blocked, and the waste heat flow direction is changed. The waste heat enters the connection frame 3 and is conducted to the heat conduction pipe 5 through the first heat conduction fin 6, heating the cold water transported in the heat conduction pipe 5. Compared with the waste heat wasted in the preheating tower 14 by the traditional main body 1 of the waste heat recovery device, the waste heat is fully utilized by adding a heating source. The heated cold water in the heat conduction pipe 5 can be output to other workshops as a constant temperature hot water source, and the waste heat utilization is more sufficient, and the main body 1 of the waste heat recovery device has stronger functionality.

[0023] One end of the main body 1 of the waste heat recovery device is detachably installed with a preheating tower 14. A feeding hopper 15 is detachably installed at the top of the preheating tower 14. One side of the preheating tower 14 is rotatably connected with a rotary kiln body 16. The outer side of the rotary kiln body 16 is detachably installed with the inner side of the heat conduction sleeve 13, and the outer side of the rotary kiln body 16 is rotatably connected with one side of the inner wall of the heat collection ring 9. The waste heat emitted from the tail discharge part of the rotary kiln body 16 is transported into the preheating tower 14 by the main body 1 of the waste heat recovery device, and the feeding hopper 15 transports raw materials into the preheating tower 14, so as to use the waste heat transported from the tail of the rotary kiln body 16 by the main body 1 of the waste heat recovery device to preheat the raw materials in the preheating tower 14. The preheated raw materials enter the rotary kiln body 16 through the preheating tower 14.

[0024] As Figures 2-4As shown in the figure, a connecting pipe 8 is detachably installed on the other side of the connecting frame 3. One end of the connecting pipe 8 is detachably installed with a heat collecting ring 9. A through hole is opened at the top of the heat collecting ring 9. An exhaust fan 10 is detachably installed inside the through hole opened in the heat collecting ring 9. The heat conducted from the rotary kiln body 16 during operation is dissipated into the heat preservation sleeve 11 through the second heat conducting fins 12 by the heat conducting sleeve 13. The exhaust fan 10 transports the hot air dissipated into the heat preservation sleeve 11 by the second heat conducting fins 12 and the hot air in the heat collecting ring 9 into the connecting frame 3 through the connecting pipe 8, and conducts it to the heat conducting pipe 5 through the first heat conducting fins 6 to heat the cold water. The heat collecting ring 9 is used as an additional heat source for the waste heat recovery device main body 1, and the heat dissipated outside the rotary kiln body 16 is also recycled, reducing heat waste and also reducing the ambient temperature around the rotary kiln body 16, improving the working environment.

[0025] Working principle

[0026] It should be noted that the present utility model is a rotary kiln waste heat recovery and treatment device. When in use, first start the exhaust fan 10. The heat dissipated from the middle and rear sections of the rotary kiln body 16 during operation is conducted to the heat conducting sleeve 13 and the heat collecting ring 9. The heat conducting sleeve 13 dissipates the conducted heat into the heat preservation sleeve 11 through the second heat conducting fins 12. The heat preservation sleeve 11 insulates the heat dissipated by the second heat conducting fins 12. The exhaust fan 10 transports the hot air dissipated into the heat preservation sleeve 11 by the second heat conducting fins 12 and the hot air in the heat collecting ring 9 into the connecting frame 3 through the connecting pipe 8. The hot air transported into the connecting frame 3 has a small density and rises through the waste heat recovery device main body 1 into the preheating tower 14 to preheat the raw materials in the preheating tower 14. When the rotary kiln body 16 processes the last batch of raw materials and there is no raw material in the preheating tower 14, close the baffle 2. The baffle 2 blocks the connection between the waste heat recovery device main body 1 and the preheating tower 14. The hot air enters the connecting frame 3 under the push of the exhaust fan 10 and is conducted to the heat conducting pipe 5 through the first heat conducting fins 6 to heat the cold water, achieving the purpose of making full use of the waste heat generated by the rotary kiln body 16.

[0027] Push the baffle 2 into the waste heat recovery device main body 1 to block the waste heat from the tail of the rotary kiln body 16 transported by the waste heat recovery device main body 1 to the preheating tower 14. The waste heat is blocked by the baffle 2 and enters the connecting frame 3 under the continuous push of the waste heat. The waste heat entering the connecting frame 3 is conducted to the first heat conducting fins 6 and then conducted from the first heat conducting fins 6 to the heat conducting pipe 5. Cold water is introduced into the heat conducting pipe 5, and the conducted waste heat heats the cold water in the heat conducting pipe 5. The waste heat from the rotary kiln body 16 pushes the flue gas in the connecting frame 3 to be filtered by the filter plate 7 and then discharged. Thus, the waste heat from the rotary kiln body 16 continuously heats the cold water transported in the heat conducting pipe 5, achieving the purpose of increasing the heat source and making full use of the waste heat.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln waste heat recovery device, comprising a waste heat recovery device body (1), characterized in that: The top of the waste heat recovery device body (1) is movably penetrated by a baffle (2); the bottom of the waste heat recovery device body (1) is detachably mounted with a connection frame (3); a mounting frame (4) is detachably mounted inside the connection frame (3); a heat conduction pipe (5) is penetrated and connected inside the mounting frame (4); a first heat conduction fin (6) is detachably mounted outside the heat conduction pipe (5); one end of the heat conduction pipe (5) is penetrated and connected to one side of the mounting frame (4); one end of the heat conduction pipe (5) penetrates and is connected to one side of the mounting frame (4); the inside of the connection frame (3) is A filter plate (7) is detachably mounted on one side of the wall, a connecting pipe (8) is detachably mounted on the other side of the connecting frame (3), a heat collecting ring (9) is detachably mounted on one end of the connecting pipe (8), a through hole is provided on the top of the heat collecting ring (9), an exhaust fan (10) is detachably mounted inside the through hole provided in the heat collecting ring (9), a heat insulating sleeve (11) is rotatably connected to one side of the heat collecting ring (9), a second heat conducting fin (12) is detachably mounted on the inner side of the heat insulating sleeve (11), and a heat conducting sleeve (13) is detachably mounted on the inner side of the second heat conducting fin (12).

2. The rotary kiln waste heat recovery device according to claim 1, characterized in that: A preheating tower (14) is detachably mounted on one end of the waste heat recovery device body (1), a lower hopper (15) is detachably mounted on the top of the preheating tower (14), a rotary kiln body (16) is rotatably connected to one side of the preheating tower (14), the outer side of the rotary kiln body (16) is detachably mounted to the inner side of the heat-conducting sleeve (13), and the outer side of the rotary kiln body (16) is rotatably connected to one side of the inner wall of the heat collecting ring (9).

3. The rotary kiln waste heat recovery device according to claim 1, characterized in that: A limiting plate (17) is detachably mounted on one side of the baffle (2); the limiting plate (17) has the same length as that of the baffle (2).

4. The rotary kiln waste heat recovery device according to claim 1, characterized in that: An inlet is provided at the top of the connection frame (3), and an outlet is provided at one side of the bottom of the waste heat recovery device body (1); the outlet provided in the waste heat recovery device body (1) is connected to the inlet provided in the connection frame (3).

5. The rotary kiln waste heat recovery device according to claim 1, characterized in that: One end of the connecting pipe (8) is connected to the interior of the connecting frame (3), and the other end of the connecting pipe (8) is connected to the interior of the heat collecting ring (9).

6. The rotary kiln waste heat recovery device according to claim 1, characterized in that: One end of the waste heat recovery device body (1) is connected to the interior of a preheating tower (14), and the interior of the preheating tower (14) is connected to one end of a rotary kiln body (16).

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