Calcining furnace material pretreatment method for drying waste gas waste heat

Abstract

The utility model relates to the technical field of waste heat conversion, and discloses a calcining furnace material pretreatment device for waste gas waste heat drying, which comprises a calcining furnace, the top end of the calcining furnace is fixedly connected with a waste gas pipe, the right end of the waste gas pipe is fixedly connected with a heat exchange box, and the heat exchange box is connected with a second heat pipe through a heat exchange assembly. The upper end of the right side of the heat exchange box is fixedly connected with a cold air pipe, the right end of the cold air pipe is fixedly connected with an air blower, the upper end of the left side of the heat exchange box is fixedly connected with a hot air pipe, the tail end of the hot air pipe is fixedly connected with a material box, and the interior of the material box is connected with a second stirrer through a rotating assembly. According to the utility model, the first motor drives the rotating heat pipe to rotate to drive the first heat pipe and the second heat pipe to rotate, so that waste gas and fresh air are more fully contacted with the heat pipes, and the heat transfer efficiency and the air heating efficiency are improved. The second motor drives the rotating rod and the stirrer to rotate, materials are stirred to be evenly heated, and the drying efficiency effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat conversion technology, and in particular to a pretreatment method for calcining furnace materials for waste gas waste heat drying. Background Technology

[0002] Calcination furnaces are widely used equipment in industrial production, playing a crucial role, especially in material drying and calcination. During operation, calcination furnaces generate large amounts of high-temperature waste gas containing significant waste heat. Effectively recovering and utilizing this waste heat is not only essential for efficient energy use but also significantly reduces production costs and energy waste, aligning with the requirements of sustainable development.

[0003] However, traditional waste heat recovery devices typically employ static heat exchange structures, resulting in low contact efficiency between waste gas and heat pipes, leading to inefficient heat transfer and underutilization of significant waste heat resources. Secondly, existing devices often lack effective stirring methods during material drying, resulting in uneven heating and compromised drying efficiency and effectiveness. Specifically, because materials accumulate inside the drying chamber, hot air struggles to fully contact them, especially in the interior or bottom areas, leading to incomplete drying and impacting overall drying quality. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pretreatment method for calcining furnace materials in waste gas waste heat drying. A first motor drives a rotating heat pipe to rotate, which in turn drives the first and second heat pipes to rotate, allowing for more thorough contact between the waste gas and fresh air and the heat pipes, thus improving heat transfer and air heating efficiency. A second motor drives a rotating rod and agitator to rotate, turning the material to ensure even heating and further improving drying efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a calcining furnace material pretreatment method for waste heat drying of exhaust gas, comprising a calcining furnace, an exhaust gas pipe fixedly connected to the top of the calcining furnace, a heat exchange box fixedly connected to the right end of the exhaust gas pipe, a second heat pipe connected to the heat exchange box via a heat exchange assembly, a cold air pipe fixedly connected to the upper right side of the heat exchange box, a blower fixedly connected to the right end of the cold air pipe, a hot air pipe fixedly connected to the upper left side of the heat exchange box, a material box fixedly connected to the end of the hot air pipe, a second stirrer connected inside the material box via a rotating assembly, and an air outlet pipe fixedly connected to the lower left side of the material box.

[0006] Furthermore, the heat exchange assembly includes a first motor fixedly connected to the top of the heat exchange box, a rotating heat pipe fixedly connected to the drive end of the first motor, a first heat pipe fixedly connected to the upper outer wall of the rotating heat pipe, a partition plate rotatably connected to the middle end of the rotating heat pipe, and a second heat pipe fixedly connected to the lower outer wall of the rotating heat pipe.

[0007] Furthermore, the rotating assembly includes a second motor fixedly connected to the top of the material box, a rotating rod fixedly connected to the drive end of the second motor, a first stirrer fixedly connected to the upper outer wall of the rotating rod, and a second stirrer fixedly connected to the lower outer wall of the rotating rod.

[0008] Furthermore, the rotating heat pipe and the heat exchange box are rotatably connected, and the partition plate is fixedly connected to the middle of the inner wall of the heat exchange box.

[0009] Furthermore, one end of the exhaust gas pipe is fixedly connected to the lower left side of the heat exchange box, and one end of the hot air pipe is fixedly connected to the upper left side of the material box.

[0010] Furthermore, an exhaust pipe is fixedly connected to the lower right side of the heat exchange box, and an exhaust fan is fixedly connected to the right end of the exhaust pipe.

[0011] Furthermore, the rotating rod and the material box are rotatably connected.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the first motor drives the rotating heat pipe to rotate, which in turn drives the first heat pipe and the second heat pipe to rotate together, making the contact between the exhaust gas and the second heat pipe more sufficient and efficient, greatly improving the efficiency of heat transfer; at the same time, the fresh air has more sufficient contact with the first heat pipe, and the efficiency of heating the fresh air is also significantly improved.

[0014] 2. In this invention, by starting the second motor, its drive end will cause the rotating rod to start rotating, which in turn will cause the first and second agitators to rotate. The agitators continuously tumble the material in the material box, allowing the material to fully contact the hot air and ensuring that every part of the material is heated evenly, greatly improving the drying efficiency and effect. Attached Figure Description

[0015] Figure 1 This is a perspective view of a calcining furnace material pretreatment method for waste gas waste heat drying proposed in this utility model.

[0016] Figure 2 This is a cross-sectional view of a heat exchanger box for material pretreatment in a calcining furnace for waste gas waste heat drying, as proposed in this utility model.

[0017] Figure 3 This is a cross-sectional view of the material box for pretreatment of calcining furnace materials in waste gas waste heat drying according to the present invention.

[0018] Legend:

[0019] 1. Calcination furnace; 2. Exhaust gas pipe; 3. Heat exchange box; 4. First motor; 5. Divider plate; 6. Rotating heat pipe; 7. First heat pipe; 8. Second heat pipe; 9. Exhaust pipe; 10. Exhaust fan; 11. Blower; 12. Cold air pipe; 13. Hot air pipe; 14. Material box; 15. Second motor; 16. Rotating rod; 17. First agitator; 18. Second agitator; 19. Exhaust pipe. Detailed Implementation

[0020] 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.

[0021] Reference Figures 1-3 This utility model provides an embodiment of a calcining furnace material pretreatment method for waste gas waste heat drying, comprising a calcining furnace 1, a waste gas pipe 2 fixedly connected to the top of the calcining furnace 1, a heat exchange box 3 fixedly connected to the right end of the waste gas pipe 2, a first motor 4 fixedly connected to the top of the heat exchange box 3, a rotating heat pipe 6 fixedly connected to the drive end of the first motor 4, a first heat pipe 7 fixedly connected to the upper outer wall of the rotating heat pipe 6, a partition plate 5 rotatably connected to the middle end of the rotating heat pipe 6, a second heat pipe 8 fixedly connected to the lower outer wall of the rotating heat pipe 6, the rotating heat pipe 6 and the heat exchange box 3 being rotatably connected, the partition plate 5 fixedly connected to the middle of the inner wall of the heat exchange box 3, an exhaust pipe 9 fixedly connected to the lower right end of the heat exchange box 3, and an exhaust fan 10 fixedly connected to the right end of the exhaust pipe 9, for heat exchange... A cold air duct 12 is fixedly connected to the upper right side of the heat exchange box 3. A blower 11 is fixedly connected to the right end of the cold air duct 12. A hot air duct 13 is fixedly connected to the upper left side of the heat exchange box 3. A material box 14 is fixedly connected to the end of the hot air duct 13. A second motor 15 is fixedly connected to the top of the material box 14. A rotating rod 16 is fixedly connected to the drive end of the second motor 15. A first stirrer 17 is fixedly connected to the upper outer wall of the rotating rod 16. A second stirrer 18 is fixedly connected to the lower outer wall of the rotating rod 16. The rotating rod 16 and the material box 14 are rotatably connected. An air outlet duct 19 is fixedly connected to the lower left side of the material box 14. One end of the exhaust pipe 2 is fixedly connected to the lower left side of the heat exchange box 3. One end of the hot air duct 13 is fixedly connected to the upper left side of the material box 14.

[0022] Specifically, when using this device, the exhaust gas generated by the combustion in the furnace 1 is transported to the heat exchange box 3 via the exhaust gas pipe 2. The heat exchange box 3 is divided into two independent chambers by a partition plate 5. When the first motor 4 is turned on, its drive end will drive the rotating heat pipe 6 to start rotating. Since the rotating heat pipe 6 is linked with the first heat pipe 7 and the second heat pipe 8, the rotation of the rotating heat pipe 6 will synchronously drive the first heat pipe 7 and the second heat pipe 8 to rotate together. At this time, the exhaust gas containing a large amount of heat enters the lower chamber of the heat exchange box 3. When the exhaust gas comes into full contact with the second heat pipe 8, the heat in the exhaust gas will be quickly absorbed by the heat pipe and transferred upwards along the heat pipe to the first heat pipe 7. At the same time, the blower 11 is started, continuously blowing fresh air into the upper chamber of the heat exchange box 3 through the cold air pipe 12. Fresh air comes into full contact with the first heat pipe 7 in the upper chamber of heat exchange box 3. The heat absorbed by the first heat pipe 7 is efficiently transferred to the fresh air, causing it to heat up rapidly. The heated air is then transported to material box 14 through hot air pipe 13. This design ensures more thorough and efficient contact between the exhaust gas and the second heat pipe 8, greatly improving the efficiency of heat transfer. Simultaneously, the larger contact area between the fresh air and the first heat pipe 7 significantly improves the heating efficiency of the fresh air. After passing through heat exchange box 3, the exhaust gas, having absorbed some heat, is extracted by exhaust fan 10 through exhaust pipe 9, ensuring smooth gas flow within the device. The hot air entering material box 14 heats the material inside from all angles, causing the moisture in the material to gradually evaporate, achieving the drying purpose. To further enhance the drying effect, the device is also equipped with a stirring function. After starting the second motor 15, its drive end drives the rotating rod 16 to rotate, which in turn drives the first stirrer 17 and the second stirrer 18 to rotate. The agitator continuously tumbles the material in the material bin 14, ensuring full contact between the material and the hot air, guaranteeing uniform heating of every part of the material, and greatly improving drying efficiency and effectiveness. The air, after heat exchange, is discharged from the device through the exhaust pipe 19. This device achieves efficient resource recycling by absorbing waste heat from the exhaust gas and converting it into hot air to heat and dry the material in the material bin 14.

[0023] Working Principle: During operation, the exhaust gas generated by the combustion in the calcining furnace 1 is transported to the heat exchange box 3 through the exhaust gas pipe 2. The heat exchange box 3 is internally divided into two independent chambers by a partition plate 5. During operation, the first motor 4 drives the rotating heat pipe 6 to rotate, thereby achieving synchronous rotation of the first heat pipe 7 and the second heat pipe 8. When the exhaust gas flows through the second heat pipe 8, the heat it carries is efficiently absorbed and transferred to the first heat pipe 7 through the rotating heat pipe 6. Simultaneously, the blower 11 sends fresh air into the heat exchange box 3 through the cold air pipe 12, where it is heated after full contact with the first heat pipe 7, and then transported to the material box 14 through the hot air pipe 13. The exhaust gas, after heat exchange treatment, is extracted from the lower end of the heat exchange box 3 by the exhaust fan 10 through the exhaust pipe 9. The hot air entering the material box 14 heats the material inside, achieving a drying effect. At the same time, the second motor 15 drives the rotating rod 16 to rotate, which drives the first agitator 17 and the second agitator 18 to operate synchronously, continuously turning the material in the material box 14. After heat exchange, the air is finally discharged from the system through the air outlet pipe 19.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment method for calcining furnace materials in waste gas waste heat drying, comprising a calcining furnace (1), characterized in that: The top of the furnace (1) is fixedly connected to a waste gas pipe (2), and the right end of the waste gas pipe (2) is fixedly connected to a heat exchange box (3). The heat exchange box (3) is connected to a second heat pipe (8) through a heat exchange component. The upper right end of the heat exchange box (3) is fixedly connected to a cold air pipe (12), and the right end of the cold air pipe (12) is fixedly connected to a blower (11). The upper left end of the heat exchange box (3) is fixedly connected to a hot air pipe (13), and the end of the hot air pipe (13) is fixedly connected to a material box (14). The inside of the material box (14) is connected to a second stirrer (18) through a rotating component, and the lower left end of the material box (14) is fixedly connected to an air outlet pipe (19).

2. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 1, characterized in that: The heat exchange assembly includes a first motor (4) fixedly connected to the top of the heat exchange box (3), a rotating heat pipe (6) fixedly connected to the drive end of the first motor (4), a first heat pipe (7) fixedly connected to the upper outer wall of the rotating heat pipe (6), a partition plate (5) rotatably connected to the middle end of the rotating heat pipe (6), and a second heat pipe (8) fixedly connected to the lower outer wall of the rotating heat pipe (6).

3. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 1, characterized in that: The rotating assembly includes a second motor (15) fixedly connected to the top of the material box (14), a rotating rod (16) fixedly connected to the drive end of the second motor (15), a first stirrer (17) fixedly connected to the upper outer wall of the rotating rod (16), and a second stirrer (18) fixedly connected to the lower outer wall of the rotating rod (16).

4. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 2, characterized in that: The rotating heat pipe (6) and the heat exchange box (3) are rotatably connected, and the partition plate (5) is fixedly connected to the middle of the inner wall of the heat exchange box (3).

5. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 1, characterized in that: One end of the exhaust pipe (2) is fixedly connected to the lower left side of the heat exchange box (3), and one end of the hot air pipe (13) is fixedly connected to the upper left side of the material box (14).

6. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 1, characterized in that: The heat exchange box (3) is fixedly connected to the lower right side of the air outlet pipe (9), and the air outlet pipe (9) is fixedly connected to the right side of the exhaust fan (10).

7. The pretreatment of calcining furnace materials for waste gas waste heat drying according to claim 3, characterized in that: The rotating rod (16) and the material box (14) are rotatably connected.

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