Electromagnetic heating high-temperature shaft kiln

Abstract

The utility model discloses an electromagnetic heating high temperature vertical kiln, including support frame and the overhauling manhole of installation at its top, two vertical kiln are fixedly installed on the inner wall of support frame, two vertical kiln are installed in support frame through top flange plate, and the inner bag is installed between two vertical kiln, the outside of vertical kiln is around and is equipped with electromagnetic hollow copper pipe coil, and electromagnetic hollow copper pipe coil heats the material inside the inner bag through electromagnetic induction. The utility model discloses, adopt electromagnetic induction direct heating technology, compared with traditional resistance heating mode, the thermal efficiency is greatly improved and the energy consumption is reduced, realizes quick heating and accurate temperature control, through dynamic nitrogen protection system, ensures that material is exempted from oxidation under high temperature, cooperates intelligent temperature control, makes temperature distribution height even. The equipment adopts modular design, is convenient for maintenance and quick replacement core component, supports multiple process extension such as steam activation, different protection gas switching simultaneously, satisfies diversified industrial demand.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature vertical kiln technology, and more specifically, to an electromagnetically heated high-temperature vertical kiln. Background Technology

[0002] Traditional industrial high-temperature vertical kilns mainly use resistance heating, which works by heating electric elements (such as silicon carbide rods, resistance wires, etc.) by passing electricity through them, and then transferring the heat to the material through thermal radiation and conduction. The following defects exist: resistance heating transfers heat through thermal conduction, which takes a long time; the kiln body is in direct contact with the material and is easily corroded, requiring complete replacement; there is no nitrogen protection, and the material is easily oxidized at high temperatures; there are only 1-2 temperature probes, which cannot monitor the internal temperature of the material, resulting in large fluctuations in product quality. In view of this, those skilled in the art have provided an electromagnetically heated high-temperature vertical kiln to solve the aforementioned problems. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide an electromagnetically heated high-temperature vertical kiln.

[0004] To solve the aforementioned technical problems, the present invention adopts the following technical solution; An electromagnetically heated high-temperature vertical kiln includes a support frame and a maintenance manhole installed on its top. Two vertical kilns are fixedly installed on the inner wall of the support frame. The two vertical kilns are installed in the support frame through a top flange. An inner liner is installed between the two vertical kilns. An electromagnetic hollow copper tube coil is wound around the outside of the vertical kiln. The electromagnetic hollow copper tube coil heats the material inside the inner liner through electromagnetic induction. Both ends of the electromagnetic hollow copper tube coil are connected to a water cooling circulation system. The water cooling circulation system includes a cooling water tank, a circulating water pump installed on the cooling water tank, an inlet pipe connected to the circulating water pump, and a return pipe connected to the other side of the cooling water tank. The ends of the inlet pipe and the return pipe away from the cooling water tank are respectively connected to the two ends of an electromagnetic hollow copper tube coil. A central vent pipe is installed inside the support frame. The central vent pipe is located inside the inner liner. The bottom end of the central vent pipe passes through and extends to the bottom of the vertical kiln. An electric control valve is installed at the bottom end of the central vent pipe. A nitrogen pipe and a steam pipe are installed at the bottom of the electric control valve. An exhaust pipe is installed on the side of the vertical kiln.

[0005] As a further description of the above technical solution: the outside of the vertical kiln is wrapped with an aluminum silicate fiber insulation layer, and the electromagnetic hollow copper tube coil is located outside the aluminum silicate fiber insulation layer.

[0006] As a further description of the above technical solution: the inner liner is fixedly connected to the vertical kiln via a top flange, and the inner liner is made of corundum ceramic.

[0007] As a further description of the above technical solution: a uniformly distributed temperature sensor is installed inside the inner liner, and a processor is installed on the support frame. The temperature sensor and the electromagnetic hollow copper tube coil are both connected to the processor. The temperature sensor is used to obtain the internal temperature of the inner liner and transmit it to the processor. The processor controls the power and on / off state of the electromagnetic hollow copper tube coil by comparing the set value with the temperature value.

[0008] As a further description of the above technical solution: the number of temperature sensors evenly distributed is six, and the six temperature sensors are distributed in pairs at the top, middle and bottom of the inner liner.

[0009] As a further description of the above technical solution: multiple support feet at the bottom of the support frame are connected to anti-slip rubber pads to prevent the kiln body from sliding.

[0010] Compared with existing technologies, the advantages of this utility model are: This invention employs electromagnetic induction direct heating technology, which significantly improves thermal efficiency and reduces energy consumption compared to traditional resistance heating. It achieves rapid heating and precise temperature control. A dynamic nitrogen protection system ensures that materials are protected from oxidation at high temperatures, and intelligent temperature control ensures highly uniform temperature distribution. The equipment features a modular design, facilitating maintenance and rapid replacement of core components. It also supports multiple process expansions, such as steam activation and switching between different protective gases, to meet diverse industrial needs. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the inner liner of this utility model; Figure 3 This is a front view schematic diagram of the vertical kiln structure of this utility model; Figure 4 This is a side view of the vertical kiln structure of this utility model; Figure 5 This is a schematic diagram illustrating the principle of this utility model.

[0012] Explanation of the labels in the diagram: 1. Support frame; 2. Inspection manhole; 3. Vertical kiln; 4. Inner liner; 5. Electromagnetic hollow copper tube coil; 6. Water cooling circulation system; 601. Cooling water tank; 602. Circulating water pump; 603. Inlet pipe; 604. Return pipe; 7. Central vent pipe; 8. Electrically controlled valve; 9. Nitrogen pipe; 10. Steam pipe; 11. Exhaust pipe; 12. Aluminum silicate fiber insulation layer; 13. Temperature sensor; 14. Processor; 15. Anti-slip rubber pad. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] To address the pain points of uneven heating, high maintenance costs, and material oxidation in traditional vertical kilns, this solution provides Example 1: Please see Figures 1-5 In this utility model, an electromagnetically heated high-temperature vertical kiln includes a support frame 1 and a maintenance manhole 2 installed on its top. Two vertical kilns 3 are fixedly installed on the inner wall of the support frame 1. The two vertical kilns 3 are installed in the support frame 1 through a top flange. An inner liner 4 is installed between the two vertical kilns 3. The inner liner 4 is fixedly connected to the vertical kilns 3 through a top flange. The inner liner 4 is made of corundum ceramic. An electromagnetic hollow copper tube coil 5 is wound around the outside of the vertical kiln 3. The electromagnetic hollow copper tube coil 5 heats the material inside the inner liner 4 through electromagnetic induction. Both ends of the electromagnetic hollow copper tube coil 5 are connected to a water cooling circulation system 6.

[0015] The water cooling circulation system 6 includes a cooling water tank 601, a circulating water pump 602 installed on the cooling water tank 601, an inlet pipe 603 connected to the circulating water pump 602, and a return pipe 604 connected to the other side of the cooling water tank 601. The ends of the inlet pipe 603 and the return pipe 604 away from the cooling water tank 601 are respectively connected to the two ends of the electromagnetic hollow copper tube coil 5.

[0016] A central vent pipe 7 is installed inside the support frame 1. The central vent pipe 7 is located inside the inner liner 4. The bottom end of the central vent pipe 7 passes through and extends to the bottom of the vertical kiln 3. An electric control valve 8 is installed at the bottom end of the central vent pipe 7. A nitrogen pipe 9 and a steam pipe 10 are installed at the bottom of the electric control valve 8. An exhaust pipe 11 is installed on the side of the vertical kiln 3. The outside of the vertical kiln 3 is wrapped with an aluminum silicate fiber insulation layer 12. An electromagnetic hollow copper tube coil 5 is located outside the aluminum silicate fiber insulation layer 12.

[0017] In this invention, the top inspection manhole 2 is opened, and materials such as ceramic blanks and battery materials are manually or mechanically loaded into the corundum ceramic inner liner 4. The inspection manhole 2 is then closed, and a sealed environment is formed through the flange to ensure stable subsequent heating and gas control.

[0018] Open the electric control valve 8 to introduce nitrogen gas. Connect the nitrogen pipe 9 to the central vent pipe 7 to continuously purge the air inside the kiln. Depending on the sensitivity of the material, continue for 5-10 minutes to ensure that the oxygen content is <0.1% to prevent high-temperature oxidation.

[0019] Start the electromagnetic hollow copper tube coil 5 and apply a high-frequency alternating current to generate an eddy current heating effect on the corundum ceramic inner liner 4. The electromagnetic heating efficiency is high, which allows the room temperature to rise to the threshold set in the background until the heating is completed. Then, electromagnetic heating is stopped, and nitrogen is introduced to assist in cooling down to <300℃ to prevent the material from cracking due to sudden cooling. The water cooling circulation system 6 operates synchronously, and the circulating water pump 602 drives the cooling water to flow through the copper pipe, thereby reducing the temperature of the copper pipe and the room to the set threshold until it is cooled down. Then, the pressure is released, the maintenance manhole 2 is opened, and the material is taken out. After the material is discharged, the wear of the inner tank 4 is checked, and it is replaced if necessary.

[0020] Please see Figures 1-4 Among them, multiple support feet at the bottom of the support frame 1 are connected to anti-slip rubber pads 15 to prevent the kiln body from sliding.

[0021] In this invention, the anti-slip rubber pad 15 is located between the support frame 1 and the installation ground, and plays a certain role in shock absorption and anti-slip.

[0022] Based on the above Embodiment 1, since the internal temperature of the vertical kiln cannot be intelligently controlled, potentially leading to high or low temperatures affecting the heating quality, this solution provides Embodiment 2: Please see Figures 1-5 The inner liner 4 is equipped with evenly distributed temperature sensors 13, and the support frame 1 is equipped with a processor 14. The temperature sensors 13 and the electromagnetic hollow copper tube coil 5 are both connected to the processor 14. The temperature sensors 13 are used to obtain the internal temperature of the inner liner 4 and transmit it to the processor 14. The processor 14 controls the power and opening / closing of the electromagnetic hollow copper tube coil 5 by comparing the set value with the temperature value.

[0023] There are six temperature sensors 13 evenly distributed in pairs at the top, middle and bottom of the inner liner 4.

[0024] In this invention, six temperature sensors monitor the top, middle and bottom temperatures of the inner liner 4 in real time to ensure a small temperature difference. During the heating process, when the indoor temperature reaches the set threshold, steam is introduced through the steam pipe to activate the material and improve its activity. At the same time, when the temperature deviates, the processor 14 controls the electromagnetic module power of the electromagnetic hollow copper tube coil 5 to ensure that the internal temperature difference is kept within a small error range.

[0025] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A high-temperature vertical kiln with electromagnetic heating, comprising a support frame (1) and a maintenance manhole (2) installed on its top, characterized in that: Two vertical kilns (3) are fixedly installed on the inner wall of the support frame (1). The two vertical kilns (3) are installed in the support frame (1) through the top flange. An inner liner (4) is installed between the two vertical kilns (3). An electromagnetic hollow copper tube coil (5) is wound around the outside of the vertical kiln (3). The electromagnetic hollow copper tube coil (5) heats the material inside the inner liner (4) through electromagnetic induction. Both ends of the electromagnetic hollow copper tube coil (5) are connected to a water cooling circulation system (6). The water cooling circulation system (6) includes a cooling water tank (601), a circulating water pump (602) is installed on the cooling water tank (601), an inlet pipe (603) is connected to the circulating water pump (602), a return pipe (604) is connected to the other side of the cooling water tank (601), and the ends of the inlet pipe (603) and the return pipe (604) away from the cooling water tank (601) are respectively connected to the two ends of the electromagnetic hollow copper tube coil (5); A central vent pipe (7) is installed inside the support frame (1). The central vent pipe (7) is located inside the inner liner (4). The bottom end of the central vent pipe (7) extends through and to the bottom of the vertical kiln (3). An electric control valve (8) is installed at the bottom end of the central vent pipe (7). A nitrogen pipe (9) and a steam pipe (10) are installed at the bottom of the electric control valve (8). An exhaust pipe (11) is installed on the side of the vertical kiln (3).

2. The electromagnetically heated high-temperature vertical kiln according to claim 1, characterized in that: The vertical kiln (3) is wrapped with an aluminum silicate fiber insulation layer (12) on the outside, and the electromagnetic hollow copper tube coil (5) is located on the outside of the aluminum silicate fiber insulation layer (12).

3. The electromagnetically heated high-temperature vertical kiln according to claim 1, characterized in that: The inner liner (4) is fixedly connected to the vertical kiln (3) via a top flange, and the inner liner (4) is made of corundum ceramic.

4. The electromagnetically heated high-temperature vertical kiln according to claim 1, characterized in that: The inner liner (4) is equipped with uniformly distributed temperature sensors (13), and the support frame (1) is equipped with a processor (14). The temperature sensors (13) and the electromagnetic hollow copper tube coil (5) are both connected to the processor (14) via signal. The temperature sensors (13) are used to obtain the internal temperature of the inner liner (4) and transmit it to the processor (14). The processor (14) controls the power and opening / closing of the electromagnetic hollow copper tube coil (5) by comparing the set value with the temperature value.

5. The electromagnetically heated high-temperature vertical kiln according to claim 4, characterized in that: The temperature sensors (13) are evenly distributed in a number of six, with each of the six temperature sensors (13) distributed in pairs at the top, middle and bottom of the inner liner (4).

6. The electromagnetically heated high-temperature vertical kiln according to claim 1, characterized in that: The support frame (1) has multiple support feet at the bottom connected to anti-slip rubber pads (15) to prevent the kiln body from sliding.

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