Continuous feeding device of pyrolysis recovery furnace and pyrolysis recovery furnace

Abstract

The utility model discloses a continuous feeding device of a pyrolysis recovery furnace, which is characterized in that a feed port and a discharge port are arranged on a buffer bin, nitrogen making devices and valve mechanisms are arranged on the feed port and the discharge port, the valve mechanisms are arranged on the outer sides of the nitrogen making devices, and the valve mechanisms and the nitrogen making devices are in signal connection with a PLC (Programmable Logic Controller); the PLC controls the nitrogen making devices and the valve mechanisms respectively, the valve mechanisms are controlled to be opened through the PLC, only one of the two valve mechanisms is opened, the interior of the pyrolyzing furnace is kept in a sealed state all the time, when the valve mechanisms are opened, the corresponding nitrogen making devices increase nitrogen injection to form a barrier layer, air passing is reduced, and when continuous feeding is conducted on the pyrolyzing recovery furnace, the nitrogen making devices and the valve mechanisms are separated from each other. And air entering the pyrolysis recovery furnace is reduced, and the feeding efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis furnace equipment, in particular to a continuous feeding device of a pyrolysis recovery furnace and a pyrolysis recovery furnace. Background Art

[0002] A pyrolysis recovery furnace is a device used to decompose waste under high temperature conditions. It converts waste into reusable products such as fuel oil and carbon black by exposing the waste to high temperature conditions, triggering a pyrolysis reaction. Pyrolysis recovery furnaces usually require an oxygen-free environment and use heat energy to break down waste into smaller molecules. These molecules can be further processed to produce reusable products such as fuel oil, liquefied gas and carbon black. This technology has been widely used in practice and can effectively treat a variety of wastes, including plastics, rubber, paper and organic waste.

[0003] In order to maintain an oxygen-free environment in the pyrolysis recovery furnace, the existing method is to continuously fill nitrogen into the pyrolysis recovery furnace to reduce the oxygen content in the pyrolysis recovery furnace. The existing method can only reduce the oxygen content in the pyrolysis recovery furnace, but cannot prevent oxygen from entering the pyrolysis recovery furnace from the feeding port in the pyrolysis recovery furnace. Utility Model Content

[0004] Purpose of the utility model: The utility model provides a continuous feeding device for a pyrolysis recovery furnace, which can reduce the passage of oxygen during continuous feeding; another purpose of the utility model is to provide a pyrolysis recovery furnace, which can reduce the entry of oxygen and improve the safety of the pyrolysis recovery furnace.

[0005] Technical solution: A continuous feeding device for a pyrolysis recovery furnace, comprising a valve mechanism, a buffer silo, a nitrogen making device, and a PLC controller. The buffer silo is provided with a feed port and a discharge port, the feed port and the discharge port are both provided with the nitrogen making device and the valve mechanism, the valve mechanism is arranged outside the nitrogen making device, the valve mechanism and the nitrogen making device are both connected to the PLC controller signal, the PLC controller controls the nitrogen making device and the valve mechanism respectively, when the valve mechanism on the feed port or the discharge port is opened, the nitrogen making device on the feed port or the discharge port increases nitrogen spraying, and when the valve mechanism on the feed port or the discharge port is closed, the nitrogen making device on the feed port or the discharge port reduces nitrogen spraying.

[0006] Furthermore, the valve mechanism includes a valve body, a driving device, a plug plate, and a screw rod. The valve body is provided with a material port, and the valve body is arranged on the feed port or the discharge port through the material port. The plug plate is arranged in the material port and is movably connected to the material port. The screw rod is fixed on the plug plate, the driving device is drivingly connected to the screw rod, and the driving device is electrically connected to the PLC controller.

[0007] Furthermore, the valve mechanism further comprises a sealing ring, which is fixedly arranged on the circumference of the material opening to improve the sealing performance.

[0008] Furthermore, the driving device is a pneumatic device, which has a long service life and is safe.

[0009] Furthermore, the plug plate is composed of three layers of horizontal plates arranged in parallel up and down, and the horizontal plates are spaced at the same distance to improve the sealing performance.

[0010] Furthermore, a motor is provided at the center of the buffer silo, a material discharge rotator is provided on the motor, the material discharge rotator is drive-connected to the motor, and the motor is electrically connected to the PLC controller.

[0011] A pyrolysis recovery furnace, wherein the continuous feeding device is respectively provided on the inlet and outlet of the recovery furnace.

[0012] Beneficial effect: The advantage of the utility model is that the valve mechanism is controlled to open by the PLC controller, and only one of the two valve mechanisms is opened, so that the pyrolysis furnace is always kept in a sealed state. When the valve mechanism is opened, the corresponding nitrogen production device increases the injection of nitrogen to form a barrier layer, reducing the passage of air, so that when the pyrolysis recovery furnace is continuously fed, the air entering the pyrolysis recovery furnace is reduced, thereby improving the feeding efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of the feeding device;

[0014] Figure 2 This is a schematic diagram of the front view of the plug board;

[0015] Figure 3 This is a schematic diagram of the front view of the pyrolysis recovery furnace. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] A continuous feeding device for a pyrolysis recovery furnace, such as Figure 1As shown, it includes a valve mechanism 1, a buffer silo 2, a nitrogen making device 3, and a PLC controller. The buffer silo 2 is provided with a feed port 21 and a discharge port 22. The material enters from the feed port 21 and is discharged from the discharge port 22. The feed port 21 and the discharge port 22 are both provided with a nitrogen making device 3 and a valve mechanism 1, that is, a nitrogen making device 3 and a valve mechanism 1 are provided on the feed port 21, and a nitrogen making device 3 and a valve mechanism 1 are provided on the discharge port 22. The nitrogen making device 3 sprays nitrogen into the feed port 21 and the discharge port 22. The sprayed nitrogen forms a nitrogen layer in the feed port 21 and the discharge port 22 to block the air and prevent the air from passing through. The opening and closing of the valve mechanism 1 makes the buffer silo 2 in an open or closed state. The valve mechanism 1 and the nitrogen making device 3 are both connected to the PLC controller signal. The specific working principle is that before use, the valve mechanism 1 on the discharge port 22 is open, and the nitrogen making devices 3 on the discharge port 22 and the feed port 21 are connected to the PLC controller signal. The specific working principle is that before use, the valve mechanism 1 on the discharge port 22 is open, and the nitrogen making devices 3 on the discharge port 22 and the feed port 21 are connected to the PLC controller signal. 3 respectively slowly spray nitrogen, and the sprayed nitrogen will enter the pyrolysis recovery furnace to reduce the proportion of oxygen in the pyrolysis recovery furnace. When it is necessary to add materials, the PLC controller controls the valve mechanism 1 on the feed port 21 to open, and controls the valve mechanism 1 on the discharge port 22 to close. When the valve mechanism 1 on the feed port 21 is opened, the PLC controller controls the nitrogen making device 3 on the side of the feed port 21 to increase the amount of nitrogen spraying to form a larger nitrogen isolation layer. At this time, the material enters the buffer silo 2 from the feed port 21. After the material enters the buffer silo 2, the PLC controller controls the valve mechanism 1 on the feed port 21 to close, and the nitrogen making device 3 on the side of the feed port 21 reduces the amount of nitrogen spraying. When the material needs to be discharged, the valve mechanism 1 on the discharge port 22 is controlled to open, the nitrogen making device 3 on the side of the feed port 21 is controlled to reduce nitrogen spraying, and the nitrogen making device 3 on the side of the discharge port 22 increases nitrogen spraying to form a nitrogen layer on the discharge port 22. The feeding device always keeps one valve mechanism 1 open, so that the pyrolysis furnace is always kept in a sealed state, that is, when the valve mechanism 1 on the feed port 21 is opened, the valve mechanism 1 on the discharge port 22 is closed, and when one valve mechanism 1 is opened, the corresponding nitrogen making device 3 will increase the nitrogen injection to block the air from passing through.

[0018] The valve mechanism 1 includes a valve body 11, a driving device 12, a plug plate 13, and a screw rod 14. The valve body 11 is provided with a material port, and the material port is the same size as the feed port 21 and the discharge port 22. The valve body 11 is arranged on the feed port 21 or the discharge port 22 through the material port, that is, the feed port 21, the discharge port 22 and the material port on the valve body 11 are the same size, which does not affect the entry and exit of the material. The feed port 21 or the discharge port 22 is docked with the valve body 11 through the material port. The plug plate 13 is arranged in the material port and is movably connected to it, that is, the plug plate 13 can move back and forth in the material port of the valve body 11 to control the opening and closing of the valve mechanism 1. The screw rod 14 is fixed on the plug plate 13, that is, the screw rod 14 can drive the plug plate 13 to move, the driving device 12 and the screw rod 14 are drivingly connected, and the driving device 12 drives the plug plate 13 to move back and forth through the screw rod 14 to control the opening or closing of the valve mechanism 1. The driving device 12 is electrically connected to the PLC controller.

[0019] The valve mechanism 1 also includes a sealing ring 15, which is fixedly arranged on the circumference of the material port, that is, the sealing ring 15 is located between the plug plate 13 and the valve body 11. The sealing ring 15 plays a buffering role. When the plug plate 13 is closed, it avoids direct impact on the valve body 11 to cause damage. The sealing ring 15 can also improve the sealing between the valve body 11 and the plug plate 13 and reduce the entry of air.

[0020] like Figure 2 As shown, the plug board 13 is composed of three layers of horizontal plates 131 arranged in parallel up and down, and the horizontal plates 131 are spaced at the same distance, that is, the plug board 13 is composed of three horizontal plates 131, each horizontal plate 131 is stacked up and down and arranged in parallel, and there is a certain distance between two adjacent horizontal plates 131 and the distance is the same, so the sealing of the plug board 13 with a three-layer structure is improved.

[0021] The driving device 12 is a pneumatic device, which has high reliability, long service life, and is fireproof, explosion-proof, and moisture-proof. Compared with other methods, the pneumatic device can be used in high-temperature environments.

[0022] A motor is provided at the center of the buffer silo 2, and a material discharge rotor 23 is provided on the motor. The material discharge rotor 23 is connected to the motor drive, and the motor and the PLC controller are electrically connected. When the material in the buffer silo 2 is added into the pyrolysis recovery furnace, the PLC controller controls the motor to rotate, thereby rotating the material discharge rotor 23. The material discharge rotor 23 is provided so that the material in the buffer silo 2 can be discharged from the discharge port 22 more smoothly.

[0023] A pyrolysis recovery furnace, such as Figure 3 As shown, continuous feeding devices are respectively provided at the inlet and outlet of the recovery furnace. By providing the continuous feeding devices, the pyrolysis recovery furnace is always in a sealed state, thereby improving the pyrolysis efficiency and safety.

[0024] The utility model has the advantages that the valve mechanism is controlled to open by the PLC controller, and only one of the two valve mechanisms is opened, so that the pyrolysis furnace is always kept in a sealed state. When the valve mechanism is opened, the corresponding nitrogen production device increases the injection of nitrogen to form a barrier layer, reducing the passage of air, so that when the pyrolysis recovery furnace is continuously fed, the air entering the pyrolysis recovery furnace is reduced, thereby improving the feeding efficiency and safety.

Claims

1. A continuous feeding device for a pyrolysis recovery furnace, characterized in that: The invention comprises a valve mechanism (1), a buffer silo (2), a nitrogen generator (3), and a PLC controller. The buffer silo (2) is provided with a feed port (21) and a discharge port (22). The feed port (21) and the discharge port (22) are both provided with the nitrogen generator (3) and the valve mechanism (1). The valve mechanism (1) is arranged outside the nitrogen generator (3). The valve mechanism (1) and the nitrogen generator (3) are both connected to the PLC controller by signal. The PLC The controller controls the nitrogen generating device (3) and the valve mechanism (1) respectively. When the valve mechanism (1) on the feed port (21) or the discharge port (22) is opened, the nitrogen generating device (3) on the feed port (21) or the discharge port (22) increases nitrogen injection. When the valve mechanism (1) on the feed port (21) or the discharge port (22) is closed, the nitrogen generating device (3) on the feed port (21) or the discharge port (22) reduces nitrogen injection.

2. A continuous feeding device for a pyrolysis recovery furnace according to claim 1, characterized in that: The valve mechanism (1) comprises a valve body (11), a driving device (12), a plug plate (13), and a screw rod (14); the valve body (11) is provided with a material port, the valve body (11) is arranged on the feed port (21) or the discharge port (22) through the material port, the plug plate (13) is arranged in the material port and is movably connected thereto, the screw rod (14) is fixedly arranged on the plug plate (13), the driving device (12) and the screw rod (14) are drivingly connected, and the driving device (12) and the PLC controller are electrically connected.

3. A continuous feeding device for a pyrolysis recovery furnace according to claim 2, characterized in that: The valve mechanism (1) further comprises a sealing ring (15), wherein the sealing ring (15) is fixedly arranged in the circumferential direction of the material opening.

4. The continuous feeding device of a pyrolysis recovery furnace according to claim 2, characterized in that: The driving device (12) is a pneumatic device.

5. The continuous feeding device of a pyrolysis recovery furnace according to claim 2, characterized in that: The inserting plate (13) is composed of three layers of horizontal plates (131) arranged in parallel up and down, and the horizontal plates (131) are spaced at the same distance.

6. The continuous feeding device of a pyrolysis recovery furnace according to claim 1, characterized in that: A motor is provided at the center of the buffer silo (2), a material unloading rotator (23) is provided on the motor, the material unloading rotator (23) is drive-connected to the motor, and the motor is electrically connected to the PLC controller.

7. A pyrolysis recovery furnace, characterized in that: It comprises the continuous feeding device described in any one of claims 1 to 6, and the continuous feeding device is respectively provided on the inlet and outlet of the recovery furnace.

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