Kiln chimney waste heat recovery device

Abstract

The utility model provides a kiln chimney waste heat recovery device which comprises a chimney base, cooling fins, a vacuum heat pipe and a heat exchange water tank, the chimney base is provided with a smoke exhaust cavity, a smoke inlet and an exhaust chimney, the smoke exhaust cavity is arranged in the chimney base, and the exhaust chimney and the smoke inlet are arranged at the upper end and the lower end of the chimney base respectively and communicated with the smoke exhaust cavity; the heat exchange water tank is arranged on one side of the chimney base and connected with a water inlet pipe and a water outlet pipe, the two ends of the vacuum heat pipe extend into the smoke exhaust cavity and the heat exchange water tank respectively, the vacuum heat pipe at the smoke exhaust cavity end is lower than the heat exchange water tank end, and the cooling fins are arranged in the smoke exhaust cavity and connected with the vacuum heat pipe in a penetrating mode. According to the device, the chimney base is arranged at the high-temperature flue gas exhaust port of the kiln, the cooling fins and the vacuum heat pipes are arranged in the base, water is transferred to the heat exchange water tank, waste heat recovery is achieved, flue gas can be rapidly cooled, the recovered waste heat is used for refrigerating machine equipment, the production electricity cost is reduced, and the economic benefits of the whole production process are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production, and in particular relates to a kiln chimney waste heat recovery device. Background Art

[0002] During the production process of lithium battery ternary positive electrode materials, according to the production process design, the materials are shaken in the sagger to be leveled and then sent to the furnace for sintering. The kiln is energized and heated by silicon carbon rods to maintain the temperature required for the material reaction. At the same time, the high-temperature flue gas discharged from the kiln often takes away 20-50% of the heat supplied by the furnace, resulting in high production costs of ternary materials. Utility Model Content

[0003] The utility model provides a kiln chimney waste heat recovery device, which can effectively solve the above problems.

[0004] The utility model is achieved in this way:

[0005] A waste heat recovery device for a kiln chimney comprises a chimney base, a heat sink, a vacuum heat pipe and a heat exchange tank. The chimney base is provided with a smoke exhaust chamber, a smoke inlet and an exhaust chimney. The smoke exhaust chamber is arranged in the chimney base, and the exhaust chimney and the smoke inlet are respectively arranged at the upper and lower ends of the chimney base and are connected to the smoke exhaust chamber; the heat exchange tank is arranged on one side of the chimney base, and the heat exchange tank is connected to a water inlet pipe and a water outlet pipe. The two ends of the vacuum heat pipe extend into the smoke exhaust chamber and the heat exchange tank respectively, and the height of the vacuum heat pipe at the smoke exhaust chamber end is lower than that at the heat exchange tank end. The heat sink is arranged in the smoke exhaust chamber and is connected to the vacuum heat pipe through-piece.

[0006] As a further improvement, the vacuum heat pipes are provided in at least one row, and a plurality of heat sinks are provided at intervals.

[0007] As a further improvement, a mounting opening is provided on the side of the chimney base to communicate with the smoke exhaust cavity, and the heat exchange water tank is arranged on the mounting opening.

[0008] As a further improvement, an observation window is provided on one side of the water exchange tank.

[0009] As a further improvement, a cleaning port is provided on one side of the water exchange tank, the cleaning port is provided with a sealing cover, and a sealing member is provided between the cleaning port and the sealing cover; the observation window is provided on the sealing cover.

[0010] As a further improvement, the exhaust chimney is provided with an exhaust slot penetrating the chimney opening, and an exhaust plug plate is provided in the exhaust slot to adjust the size of the chimney opening.

[0011] As a further improvement, the exhaust chimney is connected to an air supply chimney, at least one side of the air supply chimney is provided with an air supply port, the air supply port is provided with an air supply slot that passes through the air supply chimney, and the air supply slot is provided with an air supply plug plate to adjust the size of the air supply port.

[0012] As a further improvement, one side of the cleaning port is hingedly connected to the sealing cover.

[0013] As a further improvement, the air inlet end of the chimney base is provided with a mounting groove, the air outlet end is provided with a mounting ridge, and the air supply chimney is provided with a connecting groove corresponding to the mounting ridge.

[0014] As a further improvement, the air supply port is arranged on the opposite side of the air supply chimney.

[0015] The beneficial effects of the utility model are as follows: the device realizes waste heat recovery by arranging a chimney base at the high-temperature flue gas exhaust port of the kiln, and arranging heat sinks and vacuum heat pipes in the base to transfer the waste heat to the water in the water exchange water tank, which can not only quickly cool the flue gas, but also use the recovered waste heat for refrigeration equipment, thereby reducing the production electricity cost and improving the economic benefits of the entire production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a kiln chimney waste heat recovery device of the utility model;

[0018] Figure 2 This is a partial structural schematic diagram of a kiln chimney waste heat recovery device of the utility model;

[0019] Figure 3 It is a partial schematic diagram of a kiln chimney waste heat recovery device of the utility model;

[0020] Figure 4 It is an explosion schematic diagram of a kiln chimney waste heat recovery device of the utility model;

[0021] Figure 5 It is another exploded view of a kiln chimney waste heat recovery device of the utility model.

[0022] Reference numerals:

[0023] Chimney base 1; smoke exhaust chamber 11; smoke inlet 12; exhaust chimney 13; exhaust slot 131; installation port 14; installation slot 15; installation ridge 16; heat sink 2; vacuum heat pipe 3; water exchange water tank 4; water inlet pipe 41; water outlet pipe 42; observation window 43; cleaning port 44; sealing cover 45; sealing member 46; hinged end 47; air supply chimney 5; air supply port 51; air supply slot 52; connecting slot 53. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the description of the present invention, the terms "upper", "middle", "side", "side", "upper side", "end" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-5As shown, a kiln chimney waste heat recovery device comprises a chimney base 1, a heat sink 2, a vacuum heat pipe 3 and a heat exchange tank 4, wherein the chimney base 1 is provided with a smoke exhaust chamber 11, a smoke inlet 12 and an exhaust chimney 13, wherein the smoke exhaust chamber 11 is arranged in the chimney base 1, and the exhaust chimney 13 and the smoke inlet 12 are respectively arranged at the upper and lower ends of the chimney base 1 and are connected with the smoke exhaust chamber 11; the heat exchange tank 4 is arranged at one side of the chimney base 1, and the heat exchange tank 4 is connected with a water inlet pipe 41 and a water outlet pipe 42, and the two ends of the vacuum heat pipe 3 extend into the smoke exhaust chamber 11 and the heat exchange tank 4 respectively, and the height of the vacuum heat pipe 3 at the end of the smoke exhaust chamber 11 is lower than that of the end of the heat exchange tank 4, and the heat sink 2 is arranged in the smoke exhaust chamber 11 and is connected with the vacuum heat pipe 3 through the sheet.

[0028] A chimney base 1 is provided to be connected to the exhaust pipe of the high-temperature flue gas of the kiln, and a heat sink 2 is provided in the chimney base 1. The heat sink 2 is connected to the vacuum heat pipe 3 through the plate. The heat sink 2 collects the heat of the high-temperature hot gas and transfers it to the vacuum heat pipe 3. The vacuum heat pipe 3 transfers the heat to the water in the heat exchange water tank 4 to complete the heat recovery.

[0029] The reason why the vacuum heat pipe 3 needs to be tilted upward from the chimney base 1 end toward the heat exchange water tank 4 is that the internal medium circulation of the vacuum heat pipe 3 relies on gravity and internal medium gasification to achieve heat transfer.

[0030] The exhaust chimney 13 and the chimney base 1 can be integrally formed or connected separately.

[0031] The water inlet pipe 41 and the water outlet pipe 42 can be arranged on the same side or different sides of the water exchange tank 4 as needed, and can be arranged at the same height or different heights; in order to facilitate drainage, the water outlet pipe 42 is arranged at a low position of the water exchange tank 4; in order to make the mixing of cold and hot water more uniform, the water inlet pipe 41 and the water outlet pipe 42 are arranged opposite to each other, and the water inlet pipe 41 is located in the middle or lower middle position of one side of the water exchange tank 4.

[0032] Furthermore, the vacuum heat pipes 3 are provided in at least one row, and the heat sinks 2 are provided with a plurality of fins at intervals, so as to achieve sufficient heat collection and rapid heat transfer.

[0033] Furthermore, a mounting opening 14 is provided on the side of the chimney base 1 to communicate with the smoke exhaust cavity 11, and the heat exchange water tank 4 is arranged on the mounting opening 14. The transmission path is reduced, and the high-temperature flue gas can also directly heat the heat exchange water tank 4.

[0034] Furthermore, an observation window 43 is provided on one side of the water exchange tank 4 for observing the internal conditions of the water tank, such as the water level and scaling conditions.

[0035] Furthermore, a cleaning port 44 is provided on one side of the water exchange tank 4, and a sealing cover 45 is provided on the cleaning port 44. A sealing member 46 is provided between the cleaning port 44 and the sealing cover 45; the observation window 43 is provided on the sealing cover 45. It is convenient to open and clean the inside, and it is also convenient to install the internal structure. The sealing member 46 connection can be locked by bolts, the plum blossom thread adjustment handle is locked with the slot, or the clamp is wrapped to achieve a sealed connection.

[0036] Furthermore, the exhaust chimney 13 is provided with an exhaust slot 131 penetrating the chimney opening, and an exhaust plug plate is provided in the exhaust slot 131 to adjust the size of the chimney opening, which is used to adjust the size of the chimney opening and the exhaust speed, and to a certain extent affect the heat exchange effect.

[0037] Furthermore, the exhaust chimney 13 is connected to an air supply chimney 5, and at least one side of the air supply chimney 5 is provided with an air supply port 51, and the air supply port 51 is provided with an air supply slot 52 that penetrates the air supply chimney 5, and an air supply plug plate is provided in the air supply slot 52 to adjust the size of the air supply port 51. The flue gas after heat exchange is further cooled by air supply to reduce the temperature of the flue gas to the exhaust requirement.

[0038] Furthermore, one side of the cleaning port 44 is hingedly connected to the sealing cover 45. A hinged end 47 is provided to facilitate opening and closing of the sealing cover 45.

[0039] Furthermore, the air inlet end of the chimney base 1 is provided with a mounting groove 15, the end of the exhaust chimney 13 is provided with a mounting convex rib 16, and the air supply chimney 5 is provided with a connecting groove 53 corresponding to the mounting convex rib 16. This is conducive to the accurate and rapid connection and installation of the chimney base 1 with the kiln chimney and the air supply chimney 5.

[0040] Furthermore, the air supply port 51 is arranged on the opposite side of the air supply chimney 5 to improve the air supply and cooling effect, and the symmetrical arrangement prevents the smoke from overflowing from the air supply port 51.

[0041] A kiln chimney waste heat recovery device, the specific heat recovery steps are as follows:

[0042] Step 1: The high-temperature flue gas from the kiln enters the waste heat recovery device through the chimney base 1;

[0043] Step 2: The heat sink 2 at the hot end of the waste heat recovery device captures the heat in the high-temperature flue gas;

[0044] Step 3: Use the excellent thermal conductivity of the vacuum heat pipe 3 to quickly transfer heat to the water exchange tank 4.

[0045] Step 4: The water in the water exchange water tank 4 is heated and supplied to the refrigerator to realize heat recovery;

[0046] Step 5: The chimney exhaust plug plate is opened according to the process, and adjusted according to the air intake and furnace pressure required for sintering of the material. The cooled flue gas is collected into the exhaust pipe through the exhaust chimney 13 and the air supply chimney 5;

[0047] Step six: Open the chimney air supply plug plate to further draw in air from the environment, so that the cooled flue gas can be cooled again.

[0048] Step seven, design an observation window 43 to facilitate observation of whether the heat pipe inside the water exchange water tank 4 is scaled, to facilitate spot inspection of the scaling and to open the sealing cover 45 to clean the scale.

[0049] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A kiln chimney waste heat recovery device, characterized in that: It includes a chimney base, a heat sink, a vacuum heat pipe and a heat exchange water tank. The chimney base is provided with a smoke exhaust chamber, a smoke inlet and an exhaust chimney. The smoke exhaust chamber is arranged in the chimney base. The exhaust chimney and the smoke inlet are respectively arranged at the upper and lower ends of the chimney base and are connected with the smoke exhaust chamber. The heat exchange water tank is arranged on one side of the chimney base. The heat exchange water tank is connected with a water inlet pipe and a water outlet pipe. The two ends of the vacuum heat pipe extend into the smoke exhaust chamber and the heat exchange water tank respectively, and the height of the vacuum heat pipe at the smoke exhaust chamber end is lower than that at the heat exchange water tank end. The heat sink is arranged in the smoke exhaust chamber and is connected with the vacuum heat pipe through-piece.

2. The kiln chimney waste heat recovery device according to claim 1, characterized in that: The vacuum heat pipes are arranged in at least one row, and the heat sinks are arranged in a plurality of intervals.

3. The kiln chimney waste heat recovery device according to claim 1, characterized in that: A mounting opening is provided on the side of the chimney base and is connected to the smoke exhaust cavity, and the heat exchange water tank is arranged on the mounting opening.

4. A kiln chimney waste heat recovery device according to claim 1 or 3, characterized in that: An observation window is arranged on one side of the water exchange tank.

5. The kiln chimney waste heat recovery device according to claim 4, characterized in that: A cleaning port is provided on one side of the water exchange tank, a sealing cover is provided on the cleaning port, and a sealing member is provided between the cleaning port and the sealing cover; the observation window is provided on the sealing cover.

6. The kiln chimney waste heat recovery device according to claim 1, characterized in that: The exhaust chimney is provided with an exhaust slot penetrating the chimney opening, and an exhaust plug plate is arranged in the exhaust slot to adjust the size of the chimney opening.

7. The kiln chimney waste heat recovery device according to claim 1, characterized in that: The exhaust chimney is connected to an air supply chimney, at least one side of the air supply chimney is provided with an air supply port, the air supply port is provided with an air supply slot penetrating the air supply chimney, and an air supply plug plate is provided in the air supply slot to adjust the size of the air supply port.

8. The kiln chimney waste heat recovery device according to claim 5, characterized in that: One side of the cleaning port is hingedly connected to the sealing cover.

9. The kiln chimney waste heat recovery device according to claim 1, characterized in that: The air inlet end of the chimney base is provided with a mounting groove, the air outlet end is provided with a mounting convex ridge, and the air supply chimney is provided with a connecting groove corresponding to the mounting convex ridge.

10. The kiln chimney waste heat recovery device according to claim 7, characterized in that: The air supply port is arranged on the opposite side of the air supply chimney.

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