Carbonization furnace waste heat recovery equipment

Abstract

The utility model relates to carbonization furnace waste heat recovery equipment which comprises a carbonization furnace and a flue gas combustion device, a first flue gas pipeline is arranged on the flue gas combustion device, the output end of the first flue gas pipeline is fixedly connected with a second flue gas pipeline, and the upper end of the second flue gas pipeline is connected with a waste heat treatment device. The lower end of the second flue gas pipeline is communicated with the cooling section of the carbonization furnace, a sliding block is slidably connected in the second flue gas pipeline in a sealed mode, a cavity is formed in the sliding block, a first air outlet hole is formed in the top of the sliding block, an air inlet hole is formed in the sliding block, and a driving mechanism is installed on the outer side wall of the second flue gas pipeline. According to the utility model, the heat generated by the flue gas combustion device can be conveniently and independently conveyed into the carbonization furnace or the flue gas waste heat device by a worker, so that less heat supplied into the carbonization furnace or the flue gas waste heat device in the initial stage of operation is avoided; and heat is consumed and dissipated in the process of being conveyed to the carbonization furnace and the flue gas waste heat device, so that the beneficial effect of heat waste is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas recovery and utilization of carbonization furnaces, and specifically refers to a waste heat recovery device for carbonization furnaces. Background Art

[0002] The vertical carbonization furnace, whose structure covers multiple functional sections such as preheating, supplementary carbonization, activation, cooling, and discharging, is a key device in the production of coal-based activated carbon. During operation, the furnace raises the temperature to the range of 1000°C to 1200°C by burning natural gas in the combustion chamber, and then, with the help of a induced draft fan, introduces the high-temperature flue gas rich in heat and the heat source into the carbonization furnace together to form a temperature gradient decreasing from the furnace head to the furnace tail to meet the specific requirements of the carbonization process. However, it should be noted that the high-temperature flue gas released during the operation of the vertical carbonization furnace, although desulfurized to reduce pollution, is often directly discharged into the atmosphere due to its high calorific value and flammability, and this treatment method actually causes significant waste of gas resources.

[0003] In the prior art, CN219829550U vertical carbonization furnace flue gas waste heat recovery and utilization system is provided to solve this technical problem. By setting the first flue gas pipeline, the second flue gas pipeline and the third flue gas pipeline, the heat generated by the flue gas combustion device is re-transported back into the vertical carbonization furnace and other devices that can utilize the flue gas waste heat, so as to recover and utilize the flue gas waste heat generated by the vertical carbonization furnace and reduce energy loss.

[0004] However, during its use, there may also be certain technical problems. For example, when the device is in use, to ensure that the heat generated by the flue gas combustion device is not wasted, it is necessary to start the carbonization furnace and other devices that can utilize the flue gas waste heat simultaneously, so that the flue gas waste heat device can utilize the heat generated by the flue gas combustion device. However, there is often not much flue gas at the initial stage of starting the carbonization furnace. At this time, the heat generated by the flue gas passing through the flue gas combustion device is also less. If the heat is then divided into multiple parts and supplied to different devices respectively, the heat may be lost and dissipated during the process of being transported to the carbonization furnace and the flue gas waste heat device due to the small amount of heat, resulting in waste of heat. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a waste heat recovery device for a carbonization furnace, which can facilitate the staff to separately transport the heat generated by the flue gas combustion device into the carbonization furnace or the flue gas waste heat device, so as to avoid less heat being supplied to the carbonization furnace or the flue gas waste heat device at the initial stage of operation, resulting in loss and dissipation of heat during the process of being transported to the carbonization furnace and the flue gas waste heat device, thus causing waste of heat.

[0006] The present utility model is realized through the following technical solutions. A waste heat recovery device for a carbonization furnace is provided, including a carbonization furnace and a flue gas combustion device installed on the top of the carbonization furnace. A first flue gas pipeline is arranged on the flue gas combustion device. The output end of the first flue gas pipeline is fixedly connected with a second flue gas pipeline arranged vertically. The upper end of the second flue gas pipeline is connected to a waste heat treatment device, and the lower end of the second flue gas pipeline is communicated with the cooling section of the carbonization furnace. A slider is hermetically and slidably connected in the second flue gas pipeline. A cavity is formed in the slider. A first air outlet hole communicated with the cavity is formed at the top of the slider. An air inlet hole communicated with the cavity is formed on the side wall of the slider facing the first flue gas pipeline. A driving mechanism for driving the slider to move up and down in the second flue gas pipeline is installed on the outer side wall of the second flue gas pipeline.

[0007] During the use of the present utility model, by setting the carbonization furnace and the flue gas combustion device installed on the top of the carbonization furnace, a first flue gas pipeline is arranged on the flue gas combustion device. The output end of the first flue gas pipeline is fixedly connected with a second flue gas pipeline arranged vertically. The upper end of the second flue gas pipeline is connected to a waste heat treatment device, and the lower end of the second flue gas pipeline is communicated with the cooling section of the carbonization furnace. A slider is hermetically and slidably connected in the second flue gas pipeline. A cavity is formed in the slider. A first air outlet hole communicated with the cavity is formed at the top of the slider. An air inlet hole communicated with the cavity is formed on the side wall of the slider facing the first flue gas pipeline. A driving mechanism for driving the slider to move up and down in the second flue gas pipeline is installed on the outer side wall of the second flue gas pipeline. When the device is in use, first start the carbonization furnace and the flue gas combustion device, so that the flue gas combustion device ignites the flue gas generated by the carbonization furnace and generates heat, and makes the heat enter the first flue gas pipeline. Then drive the slider to move in the second flue gas pipeline through the driving mechanism, so that the slider blocks the outlet of the first flue gas pipeline, and makes the air inlet hole on the slider align with the outlet of the first flue gas pipeline, so that the heat in the first flue gas pipeline can enter the second flue gas pipeline through the air inlet hole, the cavity and the first air outlet hole, and enter the waste heat treatment device, so as to utilize this part of the heat, which is beneficial to increasing the utilization ways of flue gas waste heat. Drive the slider to move in the second flue gas pipeline through the driving mechanism and return to the initial position, so that the slider no longer blocks the outlet of the first flue gas pipeline, and the air inlet hole on the slider no longer aligns with the outlet of the first flue gas pipeline. At this time, the slider will block the second flue gas pipeline leading to the waste heat treatment device, so that the heat in the first flue gas pipeline can only enter the cooling section of the carbonization furnace through the second flue gas pipeline, so as to supplement heat to the vertical carbonization furnace. In this way, it is convenient for the staff to separately transport the heat generated by the flue gas combustion device into the carbonization furnace or the flue gas waste heat device, so as to avoid less heat supplied to the carbonization furnace or the flue gas waste heat device in the initial operation, resulting in heat loss and dissipation during the transportation of heat to the carbonization furnace and the flue gas waste heat device, thus causing waste of heat.

[0008] Preferably, the slider is located above the first flue gas pipe. By positioning the slider above the first flue gas pipe, it is convenient for the staff to re - convey the heat generated by the flue gas combustion device back into the carbonization furnace.

[0009] Preferably, a second air outlet hole communicating with the cavity is formed at the bottom of the slider. A rubber plug is fixedly connected to the inner side wall of the second air outlet hole. A cross - shaped hole is formed on the rubber plug. A push rod is fixedly connected to the inner side wall of the second flue gas pipe. The lower end of the push rod passes through the first air outlet hole and the second air outlet hole and presses on the rubber plug. By forming a second air outlet hole communicating with the cavity at the bottom of the slider, a rubber plug is fixedly connected to the inner side wall of the second air outlet hole, a cross - shaped hole is formed on the rubber plug, a push rod is fixedly connected to the inner side wall of the second flue gas pipe, the lower end of the push rod passes through the first air outlet hole and the second air outlet hole and presses on the rubber plug, and by driving the slider to move upward through the driving mechanism, the cross - shaped hole on the rubber plug can be pushed open by the push rod, so that the heat generated by the flue gas combustion device can be simultaneously conveyed into the carbonization furnace and the waste heat treatment device.

[0010] Preferably, the driving mechanism includes a cylinder fixedly connected to the outer side wall of the second flue gas pipe. One end of the piston rod of the cylinder is fixedly connected with a connecting rod. A rectangular long hole is vertically formed on the side wall of the second flue gas pipe far away from the first flue gas pipe. One end of the connecting rod passes through the rectangular long hole and is fixedly connected with the slider. The driving mechanism includes a cylinder fixedly connected to the outer side wall of the second flue gas pipe, one end of the piston rod of the cylinder is fixedly connected with a connecting rod, a rectangular long hole is vertically formed on the side wall of the second flue gas pipe far away from the first flue gas pipe, one end of the connecting rod passes through the rectangular long hole and is fixedly connected with the slider. By controlling the piston rod of the cylinder to extend or retract, the connecting rod can be driven to move in the rectangular long hole, so that it is convenient for the staff to drive the slider to move in the second flue gas pipe.

[0011] Preferably, the connecting rod and the slider are arranged as an integral structure. By arranging the connecting rod and the slider as an integral structure, the stability of the device during use can be improved.

[0012] The beneficial effects of the present utility model are as follows: By providing a carbonization furnace and a flue gas combustion device installed on the top of the carbonization furnace, a first flue gas pipeline is provided on the flue gas combustion device. The output end of the first flue gas pipeline is fixedly connected to a second flue gas pipeline arranged vertically. The upper end of the second flue gas pipeline is connected to a waste heat treatment device, and the lower end of the second flue gas pipeline communicates with the cooling section of the carbonization furnace. A slider is hermetically slidably connected in the second flue gas pipeline. A cavity is formed in the slider. A first air outlet hole communicating with the cavity is formed at the top of the slider. An air inlet hole communicating with the cavity is formed on the side wall of the slider facing the first flue gas pipeline. A driving mechanism for driving the slider to move up and down in the second flue gas pipeline is installed on the outer side wall of the second flue gas pipeline. When the device is in use, the driving mechanism drives the slider to move in the second flue gas pipeline, so that the slider blocks the outlet of the first flue gas pipeline, and the air inlet hole on the slider can be aligned with the outlet of the first flue gas pipeline. Then, the carbonization furnace and the flue gas combustion device are started, so that the flue gas combustion device ignites the flue gas generated by the carbonization furnace and generates heat, and the heat enters the first flue gas pipeline. In this way, the heat in the first flue gas pipeline can enter the second flue gas pipeline and the waste heat treatment device through the air inlet hole, the cavity and the first air outlet hole, so as to utilize this part of heat, which is beneficial to increasing the utilization ways of flue gas waste heat. By driving the slider to move in the second flue gas pipeline and return to the initial position by the driving mechanism, the slider no longer blocks the outlet of the first flue gas pipeline, and the air inlet hole on the slider no longer aligns with the outlet of the first flue gas pipeline. At this time, the slider blocks the second flue gas pipeline leading to the waste heat treatment device, so that the heat in the first flue gas pipeline can only enter the cooling section of the carbonization furnace through the second flue gas pipeline, so as to supplement heat to the vertical carbonization furnace. In this way, it is convenient for the staff to separately transport the heat generated by the flue gas combustion device into the carbonization furnace or the flue gas waste heat device, so as to avoid less heat supplied to the carbonization furnace or the flue gas waste heat device in the initial operation, resulting in heat loss and dissipation during the process of transporting the heat to the carbonization furnace and the flue gas waste heat device, thus causing waste of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is Figure 1 a perspective view of the structure of part A in

[0015] Figure 3 is Figure 2 a perspective view of the structure of part B in

[0016] Figure 4 is Figure 3 a perspective view of the structure of part C in

[0017] As shown in the figure:

[0018] 1. Flue gas combustion device, 2. Carbonization furnace, 3. First flue gas pipeline, 4. Second flue gas pipeline, 5. Slide block, 6. Push rod, 7. Cylinder, 8. Connecting rod, 9. Rectangular long hole, 10. First air outlet hole, 11. Cavity, 12. Second air outlet hole, 13. Air inlet hole, 14. Cross hole, 15. Rubber plug. Specific embodiments

[0019] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific embodiments.

[0020] As Figures 1-4 shown, the waste heat recovery device of the carbonization furnace of the present utility model includes a carbonization furnace 2 and a flue gas combustion device 1 installed on the top of the carbonization furnace 2. A first flue gas pipeline 3 is provided on the flue gas combustion device 1. The output end of the first flue gas pipeline 3 is fixedly connected to a vertically arranged second flue gas pipeline 4. The upper end of the second flue gas pipeline 4 is connected to a waste heat treatment device, and the lower end of the second flue gas pipeline 4 is communicated with the cooling section of the carbonization furnace 2. A slide block 5 is hermetically slidably connected in the second flue gas pipeline 4. A cavity 11 is opened in the slide block 5. A first air outlet hole 10 communicating with the cavity 11 is opened at the top of the slide block 5. An air inlet hole 13 communicating with the cavity 11 is opened on the side wall of the slide block 5 facing the first flue gas pipeline 3. A driving mechanism for driving the slide block 5 to move up and down in the second flue gas pipeline 4 is installed on the outer side wall of the second flue gas pipeline 4.

[0021] By making the slide block 5 located above the first flue gas pipeline 3, it is convenient for the staff to re - convey the heat generated by the flue gas combustion device 1 back into the carbonization furnace 2. By opening a second air outlet hole 12 communicating with the cavity 11 at the bottom of the slide block 5, a rubber plug 15 is fixedly connected to the inner side wall of the second air outlet hole 12, a cross hole 14 is opened on the rubber plug 15, a push rod 6 is fixedly connected to the inner side wall of the second flue gas pipeline 4, the lower end of the push rod 6 passes through the first air outlet hole 10 and the second air outlet hole 12 and presses on the rubber plug 15. By driving the slide block 5 to move upward through the driving mechanism, the cross hole 14 on the rubber plug 15 can be pushed open by the push rod 6, so that the heat generated by the flue gas combustion device 1 can be simultaneously conveyed to the carbonization furnace 2 and the waste heat treatment device. The driving mechanism includes a cylinder 7 fixedly connected to the outer side wall of the second flue gas pipeline 4. The end of the piston rod of the cylinder 7 is fixedly connected to a connecting rod 8. A rectangular long hole 9 is vertically opened on the side wall of the second flue gas pipeline 4 away from the first flue gas pipeline 3. One end of the connecting rod 8 passes through the rectangular long hole 9 and is fixedly connected to the slide block 5. By controlling the piston rod of the cylinder 7 to extend or retract, the connecting rod 8 can be driven to move in the rectangular long hole 9, so as to facilitate the staff to drive the slide block 5 to move in the second flue gas pipeline 4. By setting the connecting rod 8 and the slide block 5 as an integral structure, the stability of the device during use can be improved.

[0022] Combined with the attachedFigures 1-4 It can be seen that the usage method of the present utility model is as follows: First, it is necessary to start the carbonization furnace 2 and the flue gas combustion device 1 first, so that the flue gas combustion device 1 ignites the flue gas generated by the carbonization furnace 2 and generates heat to enter the first flue gas pipeline 3. When the staff needs to separately transport the heat generated by flue gas combustion into the waste heat treatment device, it is necessary to first extend the piston rod of the control cylinder 7 to push the connecting rod 8 to move downward in the rectangular long hole 9, so that the connecting rod 8 drives the slider 5 to move downward in the second flue gas pipeline 4, thereby enabling the slider 5 to block the outlet of the first flue gas pipeline 3 and enabling the air inlet hole 13 on the slider 5 to align with the outlet of the first flue gas pipeline 3, so that the heat in the first flue gas pipeline 3 can enter the second flue gas pipeline 4 through the air inlet hole 13, the cavity 11 and the first air outlet hole 10 and enter the waste heat treatment device. When the staff needs to separately transport the heat generated by flue gas combustion into the carbonization furnace 2, it is necessary to retract the piston rod of the control cylinder 7 to drive the connecting rod 8 to move upward in the rectangular long hole 9, so that the connecting rod 8 drives the slider 5 to move upward in the second flue gas pipeline 4 and return to the initial position, thereby enabling the slider 5 to no longer block the outlet of the first flue gas pipeline 3, and the air inlet hole 13 on the slider 5 also no longer aligns with the outlet of the first flue gas pipeline 3. At this time, the slider 5 will block the second flue gas pipeline 4 leading to the waste heat treatment device, so that the heat in the first flue gas pipeline 3 can only enter the cooling section of the carbonization furnace 2 through the second flue gas pipeline 4. When the heat generated by flue gas combustion is relatively large and the staff needs to transport heat to both the carbonization furnace 2 and the waste heat treatment device at the same time, by retracting the piston rod of the control cylinder 7, driving the connecting rod 8 to move upward in the rectangular long hole 9, so that the connecting rod 8 drives the slider 5 to move upward in the second flue gas pipeline 4, thereby enabling the ejector rod 6 to push the cross hole 14 on the rubber plug 15 to open, so that the heat generated by flue gas combustion can enter the waste heat treatment device through the cross hole 14, the second air outlet hole 12, the cavity 11 and the first air outlet hole 10.

[0023] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not a limitation to the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also fall within the scope of the claims of the present utility model.​

Claims

1. A carbonization furnace waste heat recovery device, comprising a carbonization furnace (2) and a flue gas combustion device (1) installed on the top of the carbonization furnace (2), wherein the flue gas combustion device (1) is provided with a first flue gas duct (3), characterized in that: The output end of the first flue gas duct (3) is fixedly connected to a second flue gas duct (4) arranged vertically, the upper end of the second flue gas duct (4) is connected to a waste heat treatment device, the lower end of the second flue gas duct (4) is connected to a cooling section of the carbonization furnace (2), a slider (5) is sealingly slidably connected inside the second flue gas duct (4), a cavity (11) is provided inside the slider (5), a first air outlet (10) connected to the cavity (11) is provided at the top of the slider (5), an air inlet (13) connected to the cavity (11) is provided on a side wall of the slider (5) facing the first flue gas duct (3), and a driving mechanism for driving the slider (5) to move up and down inside the second flue gas duct (4) is installed on the outer side wall of the second flue gas duct (4).

2. The waste heat recovery equipment for carbonization furnace according to claim 1 is characterized in that: The sliding block (5) is located above the first flue gas duct (3).

3. The waste heat recovery equipment for carbonization furnace according to claim 2 is characterized in that: A second air outlet (12) communicating with the cavity (11) is formed at the bottom of the slider (5); a rubber plug (15) is fixedly connected to the inner wall of the second air outlet (12); a cross hole (14) is formed on the rubber plug (15); a push rod (6) is fixedly connected to the inner wall of the second smoke duct (4); a lower end of the push rod (6) passes through the first air outlet (10) and the second air outlet (12) and is pressed on the rubber plug (15).

4. The waste heat recovery equipment for a carbonization furnace according to claim 1 is characterized in that: The driving mechanism comprises a cylinder (7) fixedly connected to the outer wall of the second smoke duct (4); a connecting rod (8) is fixedly connected to the end of the piston rod of the cylinder (7); a rectangular long hole (9) is vertically opened on the side wall of the second smoke duct (4) away from the first smoke duct (3); one end of the connecting rod (8) passes through the rectangular long hole (9) and is fixedly connected to the slider (5).

5. The waste heat recovery equipment for a carbonization furnace according to claim 4 is characterized in that: The connecting rod (8) and the sliding block (5) are arranged as an integrated structure.

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