Gas-solid separation device for waste rubber pyrolysis gas

Abstract

The utility model discloses a gas-solid separation device for waste rubber pyrolysis gas, which comprises a separation box (1), a separation cavity (2) is formed in the middle of the separation box (1), a waste gas inlet and a waste gas outlet are respectively arranged at two ends of the separation box (1), and a waste gas inlet pipe (3) and a waste gas outlet pipe (4) are respectively connected onto the waste gas inlet and the waste gas outlet. The end part of the waste gas inlet pipe (3) extends into the separation box (1) and is connected with a shutter guide plate (5), the end part of the waste gas outlet pipe (4) extends into the separation box (1) and is connected with an anti-vortex device (6), and a carbon black outlet pipe (7) is arranged on the side wall of one end, close to the waste gas outlet, of the separation box (1). According to the utility model, the waste gas filtering effect can be improved, and the centralized collection of carbon black particles is realized.

Description

Technical Field

[0001] This utility model relates to a waste rubber treatment device, and more particularly to a gas-solid separation device for waste rubber pyrolysis gas. Background Technology

[0002] Currently, the common method for treating waste rubber is to use a rotary cylindrical pyrolysis reactor to perform high-temperature pyrolysis of the waste rubber. This process, carried out within a sealed container, produces usable pyrolysis oil, gas, and carbon black, thus achieving the harmless treatment and recycling of the waste rubber. However, because the pyrolysis dry gas produced by the rotary pyrolysis reactor contains small amounts of carbon black particles and oil droplets, manufacturers need to filter and remove the oil from this waste gas sequentially after pyrolysis. This involves first using a filtration device to remove the carbon black particles, and then using an oil removal device to remove the oil droplets, resulting in harmless gases that can be directly emitted.

[0003] Based on the above, existing filtration devices generally use gravity settling to remove carbon black particles from exhaust gas. Specifically, the exhaust gas is horizontally introduced into the filter box, allowing it to pass horizontally through the box and enter the oil removal device. The carbon black particles in the exhaust gas fall to the bottom of the filter box under gravity during the flow, achieving separation. However, this separation method has two drawbacks. First, the separation effect is relatively poor, as some lighter carbon black particles are still affected by the airflow and enter the next process. Second, due to environmental considerations, manufacturers cannot directly discharge the exhaust gas remaining in the filter box into the external environment during the separation process. Consequently, it is also impossible to collect the carbon black particles scattered at the bottom of the filter box by simply opening it, increasing the difficulty of collecting the separated carbon black particles.

[0004] Therefore, existing filtration devices for waste rubber pyrolysis gas have problems such as poor filtration effect and difficulty in collecting carbon black particles. Utility Model Content

[0005] The purpose of this invention is to provide a gas-solid separation device for waste rubber pyrolysis gas. It can improve the filtration effect of waste gas and achieve centralized collection of carbon black particles.

[0006] The technical solution of this utility model is as follows: a gas-solid separation device for waste rubber pyrolysis gas, including a separation box, a separation chamber formed in the middle of the separation box, a waste gas inlet and a waste gas outlet respectively provided at both ends of the separation box, a waste gas inlet pipe and a waste gas outlet pipe respectively connected to the waste gas inlet and the waste gas outlet, the end of the waste gas inlet pipe extending into the separation box and connected to a louvered guide plate, the end of the waste gas outlet pipe extending into the separation box and connected to an anti-vortex device, and a carbon black outlet pipe provided on the side wall of the separation box near the waste gas outlet.

[0007] The louvered guide vane is used to guide the exhaust gas after it enters, so that the exhaust gas flows in a spiral direction towards the exhaust gas outlet after entering the separation chamber.

[0008] The anti-vortex device is used to guide and slow down the flow of exhaust gas to the exhaust outlet, so that the flue gas flows smoothly out of the separation chamber through the exhaust outlet pipe.

[0009] In the aforementioned gas-solid separation device for waste rubber pyrolysis gas, a collection trough is provided on the inner wall of the separation chamber at the bottom of the separation chamber. The carbon black outlet pipe is located at the end of the collection trough and is connected to the collection trough. A first air nozzle is connected to the end of the collection trough away from the carbon black outlet pipe. Second air nozzles are provided on both sides of the top of the separation chamber. The second air nozzle is used to blow the carbon black particles scattered on the inner wall of the separation chamber into the collection trough, and the first air nozzle is used to blow the carbon black particles in the collection trough into the carbon black outlet pipe.

[0010] In the aforementioned gas-solid separation device for waste rubber pyrolysis gas, a filtration mechanism is connected to the outside of the carbon black outlet pipe. The filtration mechanism includes a filter box, with an inlet pipe and an outlet pipe formed at both ends of the filter box. Both the inlet pipe and the outlet pipe are equipped with gate valves. An air pump is connected to the outside of the outlet pipe. A filter screen is provided in the middle of the filter box. A take-out hopper is provided at the bottom of the filter box. A discharge valve is provided on the take-out hopper. A vent pipe is connected to the outside of the filter box. A one-way valve is provided on the vent pipe.

[0011] In the aforementioned gas-solid separation device for waste rubber pyrolysis gas, the filter screen is horizontally arranged in the middle of the filter box, and the air pipe is located on the side wall of the filter box below the filter screen.

[0012] Compared with the prior art, this utility model has the following characteristics:

[0013] (1) This utility model, through the combination of separation chamber, louvered guide plate and anti-vortex device, enables the exhaust gas to first flow in a spiral under the guidance of the louvered guide plate after entering the separation chamber. During the spiral flow, the carbon black particles in the exhaust gas will be thrown outward by centrifugal force, thereby separating from the airflow and falling onto the inner wall of the separation chamber, thus improving the separation effect of carbon black particles. After the exhaust gas flows in a spiral to the exhaust gas outlet, it can be stably guided into the exhaust gas outlet pipe by the anti-vortex device and discharged outward through the exhaust gas outlet pipe, thereby realizing its filtration function.

[0014] (2) By combining the collection tank, the first jet nozzle and the second jet nozzle, the device can first blow the inner wall of the separation box through the second jet nozzle after filtration, so that the carbon black particles scattered on the inner wall of the separation box can enter the collection tank under the blowing action; the first jet nozzle can concentrate the carbon black particles in the collection tank and blow them into the carbon black outlet pipe, so that they can be discharged from the carbon black outlet pipe, that is, the concentrated discharge of carbon black particles in the separation box is realized, which is convenient for the manufacturer to collect.

[0015] (3) By limiting the structure of the filter mechanism, the carbon black particles and the waste gas retained in the separation box can be filtered through the filter screen after being discharged. The carbon black particles are separated and then enter the extraction hopper, while the waste gas can pass through the filter screen and flow to the subsequent oil removal device. On this basis, through the combination of the ventilation pipe and the one-way valve, the gate valve on the air inlet pipe can be closed after the carbon black particles are discharged, so that the outside air can enter the filter box through the ventilation pipe and replace the waste gas in the filter box with the exhaust pipe. After the waste gas is replaced, the operator can open the discharge valve and discharge the carbon black particles, thereby achieving the collection function while preventing the waste gas with oil droplets from overflowing into the external environment and improving its environmental protection effect.

[0016] Therefore, it can improve the filtration effect of exhaust gas and achieve centralized collection of carbon black particles. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Example 1;

[0018] Figure 2 This is a structural schematic diagram of Example 2;

[0019] Figure 3 This is a schematic diagram of the filtration mechanism in Example 2.

[0020] The labels in the attached diagram are as follows: 1-Separation box, 2-Separation chamber, 3-Exhaust gas inlet pipe, 4-Exhaust gas outlet pipe, 5-Louvre baffle, 6-Anti-vortex device, 7-Carbon black outlet pipe, 8-Collection tank, 9-First jet nozzle, 10-Second jet nozzle, 11-Filter box, 12-Inlet pipe, 13-Outlet pipe, 14-Filter screen, 15-Removal hopper, 16-Ventilation pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example 1. A gas-solid separation device for waste rubber pyrolysis gas, configured as follows: Figure 1 As shown, the system includes a separation box 1, a separation chamber 2 formed in the middle of the separation box 1, an exhaust gas inlet and an exhaust gas outlet at both ends of the separation box 1, an exhaust gas inlet pipe 3 and an exhaust gas outlet pipe 4 connected to the exhaust gas inlet and the exhaust gas outlet respectively, the end of the exhaust gas inlet pipe 3 extends into the separation box 1 and is connected to a louvered guide plate 5, the end of the exhaust gas outlet pipe 4 extends into the separation box 1 and is connected to an anti-vortex device 6, and a carbon black outlet pipe 7 is provided on the side wall of the separation box 1 near the exhaust gas outlet.

[0023] The louvered guide plate 5 is used to guide the exhaust gas after it enters, so that the exhaust gas flows in a spiral direction towards the exhaust gas outlet after entering the separation chamber 2.

[0024] The anti-vortex device 6 is used to guide and slow down the flow of exhaust gas to the exhaust gas outlet, so that the flue gas flows smoothly out of the separation chamber 2 through the exhaust gas outlet pipe 4.

[0025] The carbon black outlet pipe 7 is inclinedly disposed at the edge of the side wall of the separation box 1, and a valve is connected to the carbon black outlet pipe 7.

[0026] A collection trough 8 is provided on the inner wall of the separation box 1 at the bottom of the separation chamber 2. The carbon black outlet pipe 7 is located at the end of the collection trough 8 and is connected to the collection trough 8. A first air nozzle 9 is connected to the end of the collection trough 8 away from the carbon black outlet pipe 7. A second air nozzle 10 is provided on both sides of the top of the separation box 1. The second air nozzle 10 is used to blow the inner walls of both sides of the separation box 1 and blow the carbon black particles scattered on the inner wall of the separation box 1 into the collection trough 8. The first air nozzle 9 is used to blow the carbon black particles in the collection trough 8 into the carbon black outlet pipe 7.

[0027] In this embodiment, the waste gas generated by the cylindrical pyrolysis reactor enters the separation chamber 2 through the waste gas inlet pipe 3 after being discharged. As it passes through the louvered guide plate 5, it undergoes a spiral flow within the separation chamber 1, forming an external swirling airflow. The carbon black particles in the waste gas are thrown outwards by centrifugal force under the influence of this external swirling airflow, and subsequently fall onto the inner wall of the separation chamber 1. After passing through the separation chamber 2, the waste gas is discharged outwards through the waste gas outlet pipe 4, and is guided back to a normal flow state by the anti-vortex device 6, thus ensuring the subsequent gas supply effect.

[0028] After the exhaust gas is separated, the second jet nozzle 10 blows through the inner walls of both sides of the separation chamber 1, causing the carbon black particles scattered on the inner walls of the separation chamber 1 to be blown into the collection tank 8 at the bottom. At the same time, the first jet nozzle 9 at the end of the collection tank 8 blows through the carbon black particles in the collection tank 8, causing the carbon black particles to be concentrated and blown into the carbon black outlet pipe 7 at the other end, thereby realizing the collection and centralized discharge of carbon black particles in the separation chamber 1.

[0029] Example 2. A gas-solid separation device for waste rubber pyrolysis gas, configured as follows: Figure 2 and 3 As shown, the system includes a separation box 1, a separation chamber 2 formed in the middle of the separation box 1, an exhaust gas inlet and an exhaust gas outlet at both ends of the separation box 1, an exhaust gas inlet pipe 3 and an exhaust gas outlet pipe 4 connected to the exhaust gas inlet and the exhaust gas outlet respectively, the end of the exhaust gas inlet pipe 3 extends into the separation box 1 and is connected to a louvered guide plate 5, the end of the exhaust gas outlet pipe 4 extends into the separation box 1 and is connected to an anti-vortex device 6, and a carbon black outlet pipe 7 is provided on the side wall of the separation box 1 near the exhaust gas outlet.

[0030] The louvered guide plate 5 is used to guide the exhaust gas after it enters, so that the exhaust gas flows in a spiral direction towards the exhaust gas outlet after entering the separation chamber 2.

[0031] The anti-vortex device 6 is used to guide and slow down the flow of exhaust gas to the exhaust gas outlet, so that the flue gas flows smoothly out of the separation chamber 2 through the exhaust gas outlet pipe 4.

[0032] The carbon black outlet pipe 7 is inclinedly disposed at the edge of the side wall of the separation box 1.

[0033] A collection trough 8 is provided on the inner wall of the separation box 1 at the bottom of the separation chamber 2. The carbon black outlet pipe 7 is located at the end of the collection trough 8 and is connected to the collection trough 8. A first air nozzle 9 is connected to the end of the collection trough 8 away from the carbon black outlet pipe 7. A second air nozzle 10 is provided on both sides of the top of the separation box 1. The second air nozzle 10 is used to blow the inner walls of both sides of the separation box 1 and blow the carbon black particles scattered on the inner wall of the separation box 1 into the collection trough 8. The first air nozzle 9 is used to blow the carbon black particles in the collection trough 8 into the carbon black outlet pipe 7.

[0034] The carbon black outlet pipe 7 is externally connected to a filtration mechanism, which includes a filter box 11. The two ends of the filter box 11 form an inlet pipe 12 and an outlet pipe 13, respectively. The outer end of the inlet pipe 12 is connected to the carbon black outlet pipe 7. Both the inlet pipe 12 and the outlet pipe 13 are equipped with gate valves. An air pump is externally connected to the outlet pipe 13. A filter screen 14 is provided in the middle of the filter box 11. A take-out hopper 15 is provided at the bottom of the filter box 11. A discharge valve is provided on the take-out hopper 15. An air vent pipe 16 is externally connected to the filter box 11. A ball valve and a check valve are sequentially provided on the air vent pipe 16.

[0035] The filter screen 14 is horizontally arranged in the middle of the filter box 11, and the vent pipe 16 is located on the side wall of the filter box 11 below the filter screen 14.

[0036] Compared with Example 1, this example limits the structure of the filtration mechanism so that the carbon black particles, along with a small portion of the waste gas retained in the separation chamber 2, are discharged through the carbon black outlet pipe 7 and then enter the filter box 11. The waste gas is filtered by the filter screen 14, causing the carbon black particles in the waste gas to be intercepted and retained at the lower end of the filter box 11 by the filter screen 14 and fall into the bottom take-out hopper 15. The waste gas can pass through the filter screen 14 and be discharged from the air outlet pipe 13 at the top of the filter box 11, thus entering the subsequent oil removal device.

[0037] After the carbon black particles in the separation chamber 2 have been discharged, the operator can close the gate valve of the inlet pipe 12 and open the ball valve on the vent pipe 16. This allows the suction pump on the outlet pipe 13 to draw external gas into the filter box 11 through the vent pipe 16 during subsequent suction, replacing the waste gas remaining in the filter box 11 and ensuring complete extraction of waste gas. Once the waste gas has been completely extracted, the operator can open the discharge valve to allow the carbon black particles to be discharged from the extraction hopper 15. This achieves the collection function while preventing the overflow of pyrolysis gas, maintaining its environmental protection effect.

[0038] Since the separator 1 and filter 11 are separated after the gate valve of the inlet pipe 12 is closed, the separation process of the separator 1 and the filtration process of the filter mechanism can be completed simultaneously. That is, the filter mechanism does not affect the gas-solid separation function of the separator 1 for the exhaust gas, thus ensuring the gas-solid separation efficiency of the pyrolysis gas in this embodiment. At the same time, since the volume of the filter 11 is significantly reduced compared to the separator 1, it can improve the extraction efficiency of the exhaust gas in the filter 11, thereby facilitating the complete extraction of the exhaust gas retained in the filter 11 and the rapid collection of carbon black particles.

Claims

1. A gas-solid separation device for waste rubber pyrolysis gas, characterized in that: The separation box (1) includes a separation chamber (2) formed in the middle of the separation box (1). The two ends of the separation box (1) are respectively provided with an exhaust gas inlet and an exhaust gas outlet. An exhaust gas inlet pipe (3) and an exhaust gas outlet pipe (4) are respectively connected to the exhaust gas inlet and the exhaust gas outlet. The end of the exhaust gas inlet pipe (3) extends into the separation box (1) and is connected with a louvered guide plate (5). The end of the exhaust gas outlet pipe (4) extends into the separation box (1) and is connected with an anti-vortex device (6). A carbon black outlet pipe (7) is provided on the side wall of the separation box (1) near the exhaust gas outlet. The louvered guide plate (5) is used to guide the exhaust gas after it enters, so that the exhaust gas flows in a spiral direction towards the exhaust gas outlet after entering the separation chamber (2); The anti-vortex device (6) is used to guide and slow down the flow of exhaust gas to the exhaust gas outlet, so that the flue gas flows out of the separation chamber (2) smoothly through the exhaust gas outlet pipe (4).

2. The gas-solid separation device for waste rubber pyrolysis gas according to claim 1, characterized in that: A collection trough (8) is provided on the inner wall of the separation box (1) at the bottom of the separation chamber (2). The carbon black outlet pipe (7) is located at the end of the collection trough (8) and is connected to the collection trough (8). A first air nozzle (9) is connected to the end of the collection trough (8) away from the carbon black outlet pipe (7). A second air nozzle (10) is provided on both sides of the top of the separation box (1). The second air nozzle (10) is used to blow the carbon black particles scattered on the inner wall of the separation box (1) into the collection trough (8). The first air nozzle (9) is used to blow the carbon black particles in the collection trough (8) into the carbon black outlet pipe (7).

3. The gas-solid separation device for waste rubber pyrolysis gas according to claim 1, characterized in that: The carbon black outlet pipe (7) is externally connected to a filter mechanism, which includes a filter box (11). The two ends of the filter box (11) form an inlet pipe (12) and an outlet pipe (13), respectively. Both the inlet pipe (12) and the outlet pipe (13) are equipped with gate valves. An air pump is externally connected to the outlet pipe (13). A filter screen (14) is provided in the middle of the filter box (11). A take-out hopper (15) is provided at the bottom of the filter box (11). A discharge valve is provided on the take-out hopper (15). A vent pipe (16) is externally connected to the filter box (11). A one-way valve is provided on the vent pipe (16).

4. The gas-solid separation device for waste rubber pyrolysis gas according to claim 3, characterized in that: The filter screen (14) is horizontally arranged in the middle of the filter box (11), and the air pipe (16) is located on the side wall of the filter box (11) below the filter screen (14).

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