Automatic dust cleaning device for volatile matter outlet of tank-type calcinator

Abstract

The utility model discloses a kind of volatile component passageway and volatile component overflow outlet soot automatic cleaning device of tank type calcinator, including purging main pipe, purging main pipe is arranged in the volatile component passageway of tank type calcinator, and the main body of purging main pipe is installed with the purging branch pipe being communicated therewith, purging main pipe and purging branch pipe are all equipped with several blowholes, the blowhole on purging main pipe is towards the inner wall of volatile component passageway setting, the blowhole on purging branch pipe is towards volatile component overflow outlet setting;Purging main pipe top and nitrogen buffer tank above tank type calcinator are communicated, and pulse solenoid valve is installed on purging main pipe, and pulse solenoid valve is connected with PLC control system;Nitrogen buffer tank is fixedly installed with connecting seat in one end portion along length direction.The utility model can use nitrogen pulse to blow to clean ash, through accurate control and comprehensive coverage, ensure that the soot of volatile component passageway and volatile component overflow outlet is thoroughly removed, improve ash cleaning efficiency and quality, guarantee the normal operation of equipment.

Description

Technical Field

[0001] This utility model relates to an automatic ash cleaning device, specifically, to an automatic ash cleaning device for the volatile matter channel and volatile matter overflow outlet of a tank calciner, belonging to the technical field of carbon calcining equipment. Background Technology

[0002] The tank calciner is a commonly used and widely applied thermal equipment in the carbon industry, primarily used for calcining petroleum coke to achieve the required physicochemical properties. Its core structure includes a feed tank, a flue system, a volatile matter channel, and a cooling system. It calcines the petroleum coke at high temperatures through indirect heating. During calcination, the petroleum coke raw material releases a large amount of volatile matter. The volatile matter overflow outlet connects to the volatile matter channel, through which these gases enter the combustion zone and mix with air for combustion. This not only efficiently removes impurities from the coke but also provides a continuous and stable source of heat energy for the system. However, the combustion of volatile matter produces ash and unburned residues. These substances easily adhere to the flue walls, volatile matter channels, and overflow outlets, forming an ash layer. This gradually reduces the cross-sectional area of ​​the volatile matter channel, obstructing gas discharge and affecting the flue of the tank calciner. If not cleaned promptly, this can lead to severe blockages, affecting heat exchange efficiency, reducing combustion efficiency, and in severe cases, even causing localized blockages or equipment damage.

[0003] Currently, most calcining furnaces use manual cleaning or periodic furnace maintenance to remove ash. Manual cleaning relies on tools such as compressed air, blowpipes, and steel rods to remove ash through high-pressure airflow or mechanical impact. This method is not only inefficient but also results in uneven ash removal, making it difficult to completely remove ash and posing numerous safety risks.

[0004] When using manual high-pressure air blowing, the sealing modules must be opened one by one, and each fire channel, overflow port, and other ash accumulation points must be repeatedly purged, making the operation cumbersome. Purge operations require stopping the furnace, each group taking 1-2 hours. During this time, the calcining furnace temperature fluctuates significantly, affecting subsequent heating and product quality, and easily causing odors and explosions. The purged dust contains harmful substances such as sulfur dioxide and carbon monoxide; direct emission would cause air pollution and harm human health. Waste and dust collection is difficult, easily leading to secondary pollution and failing to meet environmental protection requirements.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing an automatic cleaning device for ash accumulation at the volatile matter channel and overflow outlet of a tank-type calcining furnace. It utilizes nitrogen pulse jet cleaning to remove ash, and through precise control and comprehensive coverage, ensures that the ash accumulation at the volatile matter channel and overflow outlet is thoroughly removed, thereby improving cleaning efficiency and quality and guaranteeing the normal operation of the equipment.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: An automatic cleaning device for ash accumulation at the volatile matter channel and overflow outlet of a tank-type calciner includes a main purging pipe, which is installed inside the volatile matter channel of the tank-type calciner. A purging branch pipe is installed on the main body of the main purging pipe and is connected to it. Both the main purging pipe and the branch pipe are equipped with several spray holes. The spray holes on the main purging pipe face the inner wall of the volatile matter channel, and the spray holes on the branch pipe face the volatile matter overflow outlet. The top of the main purging pipe is connected to a nitrogen buffer tank above the tank-type calciner. A pulse solenoid valve is installed on the main purging pipe and is connected to a PLC control system. A connecting seat is fixedly installed at one end of the nitrogen buffer tank along its length.

[0008] Furthermore, a flange interface for the purging main pipe is installed at the top of the volatile matter avenue.

[0009] Furthermore, the flange interface is fastened to the ring plate with bolts, and the ring plate is sleeved and fixed around the purge main pipe and located below the pulse solenoid valve.

[0010] Furthermore, the nitrogen buffer tank is arranged laterally, and the nitrogen buffer tank is fixedly connected to the lowered support frame by at least two clamps, and the support frame is located at the top of the tank-type calcining furnace.

[0011] Furthermore, the nitrogen buffer tank is provided with multiple gas outlets on its side along the length direction, and the gas outlets are connected to the top of the purging main pipe.

[0012] Furthermore, the connector is equipped with an air inlet and a drain outlet.

[0013] Furthermore, a nitrogen inlet pipe is installed inside the air inlet.

[0014] Furthermore, the end of the nitrogen inlet pipe furthest from the nitrogen buffer tank is connected to the nitrogen generator.

[0015] Furthermore, a drain valve is installed inside the drain hole, and the inside of the drain valve is connected to the drain hose.

[0016] Furthermore, a countersunk head is installed at the end of the drain hose away from the drain valve, and the countersunk head is located at the bottom of the inner cavity of the nitrogen buffer tank.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This invention uses a PLC control system to control a pulse solenoid valve to achieve pulsed nitrogen injection. By installing composite alloy purge pipes at locations such as the volatile matter channel and overflow outlet, nitrogen is used to purge accumulated ash to the lower burner for combustion, achieving a ash removal effect. Using nitrogen injection can reduce secondary combustion in the fire channel, reduce the occurrence of coking, flame spraying and local high temperature phenomena, and improve system safety. This invention not only fills the current technological gap in the automatic cleaning of volatile matter channels in the carbon industry's tank calcining furnaces, but also effectively solves a series of problems such as high labor intensity, high cost, and environmental and safety hazards in the manual cleaning process.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view at point M; Figure 3 This is a cross-sectional schematic diagram of the inlet end of the nitrogen buffer tank.

[0020] In the diagram, 1-Purge main pipe, 2-Ring plate, 3-Flange interface, 4-Nitrogen buffer tank, 5-Outlet port, 6-Pulse solenoid valve, 7-Purge branch pipe, 8-Connecting seat, 9-Inlet port, 10-Drain port, 11-Nitrogen inlet pipe, 12-Drain valve, 13-Drain hose, 14-Clamp, 15-Support frame, 16-Volatile part main pipe, 17-Volatile part overflow port, 18-Tank calciner. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0022] like Figures 1-3 As shown in the figure, this utility model provides an automatic cleaning device for volatile matter channel and ash accumulation at the volatile matter overflow outlet of a tank calciner, including a purge main pipe 1, which is installed inside the volatile matter channel 16 of the tank calciner 18, and a purge branch pipe 7 connected to it is installed on the main body of the purge main pipe 1.

[0023] Both the main purging pipe 1 and the branch purging pipe 7 are provided with several spray holes. The spray holes on the main purging pipe 1 are set towards the inner wall of the volatile matter channel 16, and the spray holes on the branch purging pipe 7 are set towards the volatile matter overflow outlet 17.

[0024] The main purging pipe 1 and the branch purging pipe 7 are made of alloy and ceramic composite material, which has good oxidation resistance, corrosion resistance and high temperature resistance. They can operate continuously in high temperature environment to ensure long-term stable operation.

[0025] The top of the purge main pipe 1 is connected to the nitrogen buffer tank 4. A pulse solenoid valve 6 is installed on the purge main pipe 1, and the pulse solenoid valve 6 is connected to the PLC control system.

[0026] The top of the volatile matter channel 16 is equipped with a flange interface 3 for the purge main pipe 1 to pass through. The flange interface 3 is fastened to the ring plate 2 with bolts. The ring plate 2 is sleeved and fixed around the purge main pipe 1 and is located below the pulse solenoid valve 6. The connection between the ring plate 2 and the flange interface 3 ensures the sealing of the purge main pipe 1 insertion point and prevents external air from entering the furnace.

[0027] The nitrogen buffer tank 4 is arranged horizontally, and the nitrogen buffer tank 4 is fixedly connected to the support frame 15 below by at least two clamps 14. The support frame 15 is located at the top of the tank calcining furnace 18.

[0028] The nitrogen buffer tank 4 has multiple gas outlet ports 5 along its length, and the gas outlet ports 5 are connected to the top of the purging main pipe 1.

[0029] A connecting seat 8 is fixedly installed at one end of the nitrogen buffer tank 4 along its length. The connecting seat 8 has an air inlet 9 and a drain hole 10 inside.

[0030] A nitrogen inlet pipe 11 is installed inside the air inlet 9. The end of the nitrogen inlet pipe 11 away from the nitrogen buffer tank 4 is connected to the nitrogen generator to provide nitrogen for pulse.

[0031] A drain valve 12 is installed inside the drain hole 10. The drain valve 12 is connected to the drain hose 13. A countersunk head is installed at the end of the drain hose 13 away from the drain valve 12. The countersunk head is located at the bottom of the inner cavity of the nitrogen buffer tank 4.

[0032] Once condensate appears in the nitrogen buffer tank 4, it will be discharged in sequence through the countersunk head, drain hose 13 and drain valve 12 under high pressure to prevent condensate from entering the furnace with the pulse gas and ensure the cleanliness of the incoming gas.

[0033] The specific working principle of this utility model is as follows: A PLC control system controls the pulse solenoid valve to achieve pulsed nitrogen blowing. Composite alloy purge pipes are installed at volatile matter channels and overflow outlets, using nitrogen to blow accumulated ash to the lower combustion port for combustion, achieving a ash removal effect. Nitrogen blowing reduces secondary combustion within the combustion chamber, lowers the occurrence of coking, flame ejection, and localized high temperatures, and improves system safety. The composite alloy purge pipes possess high strength and corrosion resistance, enabling them to adapt to the high-temperature and complex environment inside the pot furnace, ensuring long-term stable operation. The pulse solenoid valve enables precise pulsed nitrogen injection, flexibly adjusting the blowing force and frequency according to the ash accumulation, achieving efficient and precise ash removal.

[0034] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. An automatic cleaning device for ash accumulation at the volatile matter outlet and volatile matter overflow port of a tank-type calcining furnace, characterized in that: The system includes a purge main pipe (1), which is installed inside the volatile matter channel (16) of the tank calciner (18). A purge branch pipe (7) connected to the main body of the purge main pipe (1) is installed thereon. Both the purge main pipe (1) and the purge branch pipe (7) are provided with several spray holes. The spray holes on the purge main pipe (1) are set towards the inner wall of the volatile matter channel (16), and the spray holes on the purge branch pipe (7) are set towards the volatile matter overflow port (17). The top of the purge main pipe (1) is connected to the nitrogen buffer tank (4) above the tank calciner (18). A pulse solenoid valve (6) is installed on the purge main pipe (1), and the pulse solenoid valve (6) is connected to the PLC control system. A connecting seat (8) is fixedly installed at one end of the nitrogen buffer tank (4) along the length direction.

2. The automatic cleaning device for volatile matter overflow outlet and ash accumulation in the calciner as described in claim 1, characterized in that: The top of the volatile matter avenue (16) is fitted with a flange interface (3) for the purge main pipe (1) to pass through.

3. The automatic cleaning device for volatile matter overflow outlet and ash accumulation in the calciner as described in claim 2, characterized in that: The flange interface (3) is fastened to the ring plate (2) by bolts. The ring plate (2) is fitted and fixed around the purge main pipe (1) and located below the pulse solenoid valve (6).

4. The automatic cleaning device for volatile matter overflow outlet and ash accumulation in the calciner as described in claim 1, characterized in that: The nitrogen buffer tank (4) is arranged in a horizontal direction. The nitrogen buffer tank (4) is fixedly connected to the support frame (15) below by at least two clamps (14). The support frame (15) is located on the top of the tank calcining furnace (18).

5. The automatic cleaning device for volatile matter overflow outlet and ash accumulation in the calciner as described in claim 1, characterized in that: The nitrogen buffer tank (4) has multiple air outlets (5) on its side along the length direction, and the air outlets (5) are connected to the top of the purging main pipe (1).

6. The automatic cleaning device for volatile matter overflow outlet and ash accumulation in the calciner as described in claim 1, characterized in that: The connector (8) has an air inlet (9) and a drain hole (10) inside.

7. The automatic cleaning device for ash accumulation at the volatile matter channel and overflow port of the tank-type calciner as described in claim 6, characterized in that: A nitrogen inlet pipe (11) is installed inside the air inlet (9).

8. The automatic cleaning device for ash accumulation at the volatile matter outlet of the calciner as described in claim 7, characterized in that: The end of the nitrogen inlet pipe (11) away from the nitrogen buffer tank (4) is connected to the nitrogen generating equipment.

9. The automatic cleaning device for volatile matter vents and ash accumulation at the overflow outlet of a tank-type calciner as described in claim 6, characterized in that: A drain valve (12) is installed inside the drain hole (10), and the inside of the drain valve (12) is connected to the drain hose (13).

10. The automatic cleaning device for ash accumulation at the volatile matter channel and overflow port of the tank-type calciner as described in claim 9, characterized in that: A countersunk head is installed at the end of the drain hose (13) away from the drain valve (12), and the countersunk head is located at the bottom of the inner cavity of the nitrogen buffer tank (4).

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