Pyrolysis waste gas dust collection device
By designing a pyrolysis waste gas dust collection device that combines a cyclone separation drum, a gravity settling chamber and a water-cooled screw conveyor, the problem of dust-containing airflow removal during low-temperature pyrolysis is solved, achieving efficient dust removal and cooling collection, and meeting the requirements of environmental protection and processing efficiency requirements.
Patent Information
- Application Number
- CN202423267528.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the prior art, dust-containing airflow generated during low-temperature pyrolysis is difficult to effectively remove, and the existing devices have problems such as the device being too simple, unclear filtering, too high smoke and dust temperature, and inability to collect uniformly.
A pyrolysis waste gas dust collection device including a cyclone separation cylinder, a gravity settling chamber and a water-cooled screw conveyor is designed. The smoke and dust in the dust-containing airflow are removed through the combined action of the cyclone separation cylinder and the gravity settling chamber. The water-cooled screw conveyor uses For cooling and collecting solid waste.
It achieves efficient removal of dust-containing airflow generated by volatilization during low-temperature pyrolysis, has good cooling effect and dust removal efficiency, avoids dust-containing airflow from entering the incinerator, and realizes water-cooling cooling and collection of high-temperature dust.
Smart Images
Figure CN222384385U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tail gas treatment and environmental protection, and specifically provides a pyrolysis waste gas dust collecting device. Background Art
[0002] With the continuous development of the economy, the call for low-carbon and environmental protection is getting louder and louder. Effective measures must be taken to ensure that exhaust emissions meet emission standards. This has prompted the emergence of a series of technologies for different waste gas treatments, which have gradually developed from the initial simple treatment methods to the current more complete comprehensive treatment technology system.
[0003] Low-temperature pyrolysis volatilization is a process route in the incineration treatment of the industrial field. The low-temperature pyrolysis volatilization method will produce a dust-containing airflow carrying complex solid waste. If it directly enters the incinerator for secondary incineration treatment, it will not only corrode the incinerator, but also produce various toxic and harmful chemical gases. The commonly used dust-containing waste gas treatment solutions in the prior art have problems such as too simple equipment, unclean filtration, too high smoke temperature, and inability to collect uniformly.
[0004] Therefore, designing an exhaust gas dust collection device with a complete structure, high dust removal rate, good cooling effect and easy collection is an urgent problem to be solved. Utility Model Content
[0005] In order to solve the above problems, the utility model provides a pyrolysis waste gas dust collecting device, which can effectively remove the dust-containing airflow volatilized in the low-temperature pyrolysis process and has good cooling effect and dust removal efficiency.
[0006] The utility model provides a pyrolysis waste gas dust collecting device, comprising a cyclone separation cylinder, a gravity settling chamber and a water-cooled screw conveyor connected to the cyclone separation cylinder and the bottom of the gravity settling chamber; the top air outlet of the cyclone separation cylinder is connected to a centrifugal fan, and a connecting pipe is provided between the centrifugal fan and the gravity settling chamber; the air inlet of the cyclone separation cylinder is connected to an air inlet pipe, and the air outlet of the gravity settling chamber is connected to an air outlet pipe, and both the air inlet pipe and the air outlet pipe are segmented assembly structures; the water-cooled screw conveyor comprises a double-layer cooling mechanism arranged inside and outside; the water-cooled screw conveyor The conveyor includes a water-cooled hollow shaft and a water-cooled sleeve sleeved on the water-cooled hollow shaft, and the water-cooled hollow shaft and the water-cooled sleeve together constitute a double-layer cooling mechanism; the water-cooled sleeve is provided with a water inlet 1 and a water outlet 1, and the water-cooled hollow shaft is provided with a water inlet 2 and a water outlet 2; the lower ends of the cyclone separation cylinder and the gravity settling chamber are respectively provided with an ash hopper 1 and an ash hopper 2, and both the ash hopper 1 and the ash hopper 2 are of a reduced diameter structure with an inner diameter gradually decreasing from top to bottom; a plurality of feed ports are opened on the water-cooled sleeve, and the lower ends of the ash hopper 1 and the ash hopper 2 are respectively connected to different feed ports.
[0007] Furthermore, water inlet 1 and water outlet 1 are respectively opened at the two ends of the water-cooling sleeve, water inlet 1 is located at the upper end of the water-cooling sleeve, and water outlet 1 is located at the lower end of the water-cooling sleeve; water inlet 2 and water outlet 2 are both located at one end of the water-cooled hollow shaft close to water inlet 1.
[0008] Furthermore, a rectangular connecting platform is provided on the water-cooling sleeve extending upward from the feed port, and a rectangular ash outlet platform is provided at the lower ends of the ash collecting hopper 1 and the ash collecting hopper 2 to match the connecting platform, and a clamp-type butterfly valve is provided between the connecting platform and the ash outlet platform.
[0009] Furthermore, air vibrators are arranged on the conical cylinder walls of the first ash collecting hopper and the second ash collecting hopper.
[0010] Furthermore, the water-cooled screw conveyor also includes a drive motor located at the end of the water-cooling sleeve, and the drive motor is arranged close to the water outlet; a discharge port is also provided at the lower end of the water-cooling sleeve away from the drive motor.
[0011] Furthermore, the air inlet duct includes an upper herringbone tube 1 and an inclined tube 1 and an inclined tube 2 respectively connected to the lower ends of both sides of the herringbone tube 1, a vertical tube 1 is provided at the lower end of the inclined tube 1 and an opening valve is provided at the bottom end of the vertical tube 1, and the vertical tube 1 and the inclined tube 1 are connected by an elbow; a horizontal tube is included between the inclined tube 2 and the cyclone separation cylinder, and the inclined tube 2 and the horizontal tube are connected by an elbow; the horizontal tube is also connected to an insertion tube through a flange 1, and the part of the insertion tube extending into the cyclone separation cylinder includes a pointed head.
[0012] Furthermore, the connecting pipe is an L-shaped pipe, in which the vertical pipe 2 is connected to the gravity settling chamber; the air outlet pipe includes a vertical pipe 3 connected to the upper end of the gravity settling chamber and parallel to the vertical pipe 2; the air outlet pipe also includes an upper herringbone pipe 2 and an inclined pipe 3 and an inclined pipe 4 respectively connected to the lower ends of both sides of the herringbone pipe 2, and the inclined pipe 3 is connected to the vertical pipe 3 through an elbow; the lower end of the inclined pipe 4 is connected to the vertical pipe 4 connected to the incinerator.
[0013] Furthermore, blind covers are provided at the upper ends of the first herringbone tube and the second herringbone tube; and the second ash collecting hopper includes two ash collecting hoppers that are evenly arranged.
[0014] Compared with the prior art, the utility model can achieve the following beneficial effects: the dust collecting device in the utility model has a simple and complete structure, and can effectively remove the dust-containing airflow generated by volatilization during low-temperature pyrolysis only through equipment such as cyclone separation drum, gravity settling chamber and water-cooled screw conveyor, thereby preventing the dust-containing airflow from entering the exhaust gas incinerator. At the same time, the high-temperature complex dust can be collected by water cooling to prevent it from being exposed to the natural environment, thus maintaining environmental protection requirements, and having significant advantages such as efficient dust removal, cooling recovery and centralized treatment, providing reliable technical support for the environmental protection disposal of exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of a dust collecting device provided according to an embodiment of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the air inlet duct provided according to an embodiment of the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of a cyclone separation cylinder provided according to an embodiment of the utility model;
[0018] Figure 4 It is a structural schematic diagram of a water-cooled screw conveyor provided according to an embodiment of the utility model;
[0019] Figure 5 It is a structural schematic diagram of an air outlet duct provided according to an embodiment of the utility model.
[0020] The reference numerals include: cyclone separation cylinder 1, wafer-type butterfly valve 11, ash hopper 1 12, air vibrator 13, gravity settling chamber 2, ash hopper 2 21, water-cooled screw conveyor 3, feed port 1 31, feed port 2 32, feed port 3 33, discharge port 34, water-cooled sleeve 35, water-cooled hollow shaft 36, water inlet 1 37, water outlet 1 38, water inlet 2 39, water outlet 2 3X, drive Motor 3Y, air inlet duct 4, opening valve 41, elbow 42, blind cover 43, herringbone tube 1 44, oblique tube 1 45, oblique tube 2 46, vertical tube 1 47, horizontal tube 48, flange 1 49, inserted tube 4X, pointed head 4Y, centrifugal fan 5, connecting duct 6, vertical tube 2 61, air outlet duct 7, vertical tube 3 71, herringbone tube 2 72, vertical tube 4 73, oblique tube 3 74, oblique tube 4 75. DETAILED DESCRIPTION
[0021] The following is combined with Figure 1-5 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.
[0022] A pyrolysis waste gas dust collecting device, such as Figure 1 As shown, it includes a cyclone separation drum 1, a gravity settling chamber 2 and a water-cooled screw conveyor 3 connected to the cyclone separation drum 1 and the bottom of the gravity settling chamber 2. The top air outlet of the cyclone separation drum 1 is connected to a centrifugal fan 5. A connecting pipe 6 is provided between the centrifugal fan 5 and the gravity settling chamber 2. The connecting pipe 6 is an L-shaped pipe. The vertical pipe 61 is connected to the gravity settling chamber 2 in the L-shaped pipe. The air inlet of the cyclone separation drum 1 is connected to an air inlet pipe 4. The air outlet of the gravity settling chamber 2 is connected to an air outlet pipe 7. The air inlet pipe 4 and the air outlet pipe 7 are both segmented assembly structures.
[0023] like Figure 1 , Figure 2 As shown, the air inlet duct 4 includes an upper herringbone tube 1 44 and an oblique tube 1 45 and an oblique tube 2 46 respectively connected to the lower ends of both sides of the herringbone tube 1 44, a vertical tube 1 47 is provided at the lower end of the oblique tube 1 45, an electric regulating opening valve 41 is provided at the bottom end of the vertical tube 1 47, the vertical tube 1 47 and the oblique tube 1 45 are connected by an elbow 42, a horizontal tube 48 is included between the oblique tube 2 46 and the cyclone separation cylinder 1, the oblique tube 2 46 and the horizontal tube 48 are connected by an elbow 42, and the flow direction is adjusted by the elbow 42, the horizontal tube 48 is also connected to an insertion tube 4X through a flange 1 49, the part of the insertion tube 4X extending into the cyclone separation cylinder 1 includes a pointed head 4Y, the pointed head 4Y facilitates the insertion tube 4X to extend into the interior of the cyclone separation cylinder 1, and a blind cover 43 is provided at the upper end of the herringbone tube 1 44. The air inlet duct 4 is assembled from a herringbone tube 1 44, an oblique tube 1 45, an oblique tube 2 46, two elbows 42, a vertical tube 1 47, a horizontal tube 48, and an insertion tube 4X, which is convenient for installation and disassembly.
[0024] like Figure 1 , Figure 5 As shown, the air outlet duct 7 includes a vertical pipe 3 71 connected to the upper end of the gravity settling chamber 2 and parallel to the vertical pipe 2 61, the vertical pipe 3 71 is connected to the end of the gravity settling chamber 2, the air outlet duct 7 also includes an upper herringbone pipe 2 72 and an oblique pipe 3 74 and an oblique pipe 4 75 respectively connected to the lower ends of both sides of the herringbone pipe 2 72, the oblique pipe 3 74 and the vertical pipe 3 71 are connected through an elbow 42, and the lower end of the oblique pipe 4 75 is connected to a vertical pipe 4 73 connected to the incinerator. The air outlet duct 7 is assembled by the herringbone pipe 2 72, the oblique pipe 3 74, the oblique pipe 4 75, the vertical pipe 3 71, the elbow 42 and the vertical pipe 4 73, and the air outlet duct 7 and the air inlet duct 4 are both segmented assembly structures.
[0025] like Figure 4 As shown, the water-cooled screw conveyor 3 includes a double-layer cooling mechanism arranged inside and outside. The water-cooled screw conveyor 3 includes a water-cooled hollow shaft 36 and a water-cooled sleeve 35 sleeved on the water-cooled hollow shaft 36. The water-cooled hollow shaft 36 and the water-cooled sleeve 35 together constitute a double-layer cooling mechanism. The water-cooled sleeve 35 is provided with a water inlet 37 and a water outlet 38. The water-cooled hollow shaft 36 is provided with a water inlet 39 and a water outlet 3X. The water inlet 37 and the water outlet 38 are respectively opened at both ends of the water-cooled sleeve 35 for easy operation. The water inlet 37 is located at the upper end of the water-cooled sleeve 35, and the water outlet 38 is located at the lower end of the water-cooled sleeve 35. The water inlet 39 and the water outlet 3X are both located at one end of the water-cooled hollow shaft 36 close to the water inlet 37.
[0026] like Figure 1 , Figure 3 , Figure 4As shown, the lower ends of the cyclone separation drum 1 and the gravity settling chamber 2 are respectively provided with an ash hopper 1 12 and an ash hopper 2 21. Both the ash hopper 1 12 and the ash hopper 2 21 are of a reducing structure with an inner diameter gradually decreasing from top to bottom. A plurality of feed ports are opened on the water-cooling sleeve 35. The lower ends of the ash hopper 1 12 and the ash hopper 2 21 are respectively connected to different feed ports. The ash hopper 2 21 includes two evenly arranged ones.
[0027] The feed port includes feed port 1 31, feed port 2 32 and feed port 3 33. Feed port 1 31 and feed port 2 32 are respectively connected to two ash collecting hoppers 2 21, and feed port 3 33 is connected to ash collecting hopper 1 12. The water-cooled screw conveyor 3 also includes a drive motor 3Y located at the end of the water-cooling sleeve 35. The drive motor 3Y is arranged close to the water outlet 1 38. A discharge port 34 is also provided at the lower end of the water-cooling sleeve 35 away from the drive motor 3Y.
[0028] A rectangular connecting platform is provided on the water-cooling sleeve 35 at the feed inlet. A rectangular ash outlet platform is provided at the lower ends of the ash collecting hopper 12 and the ash collecting hopper 21 to match the connecting platform. A clamp-type butterfly valve 11 is provided between the connecting platform and the ash outlet platform. Figure 1 As shown in M, the rectangular connection platform is as follows Figure 1 As shown in FIG. 1 , air vibrators 13 are provided on the conical cylinder walls of the ash collecting hopper 1 12 and the ash collecting hopper 2 21 .
[0029] When in use, a large amount of high-temperature dusty airflow is generated after the pyrolysis of the lithium-ion battery. The dusty airflow first passes through the air inlet duct 4, and the opening is adjusted by the electrically adjustable opening valve 41 to control the gas flow entering the cyclone separation cylinder 1. Under the centrifugal action of the internal structure of the cyclone separation cylinder 1, the smoke in the dusty airflow is deposited in the ash hopper 1 12 below, and the clean airflow is sucked into the gravity settling chamber 2 by the centrifugal fan 5. Under the action of gravity, the remaining smoke in the airflow continues to settle and is collected in the ash hopper 2 21 below. Then the filtered clean airflow enters the incinerator through the air outlet duct 7 for incineration. The solid waste in the ash hopper 1 12 and the ash hopper 2 21 enters the water-cooled screw conveyor 3 for cooling under the vibration action of the air vibrator 13. The solid waste that has been cooled is transported out from the discharge port 34 and stored in a specific closed container for treatment.
[0030] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A pyrolysis waste gas dust collecting device, characterized in that: The invention comprises a cyclone separation cylinder (1), a gravity settling chamber (2), and a water-cooled screw conveyor (3) connected to the bottom of the cyclone separation cylinder (1) and the gravity settling chamber (2); the top air outlet of the cyclone separation cylinder (1) is connected to a centrifugal fan (5), and a connecting pipe (6) is provided between the centrifugal fan (5) and the gravity settling chamber (2); the air inlet of the cyclone separation cylinder (1) is connected to an air inlet pipe (4), and the air outlet of the gravity settling chamber (2) is connected to an air outlet pipe (7), and the air inlet pipe (4) and the air outlet pipe (7) are both segmented assembly structures; the water-cooled screw conveyor (3) comprises a double-layer cooling mechanism arranged inside and outside; the water-cooled screw conveyor (3) comprises a water-cooled hollow shaft (36) and a water-cooled hollow shaft (36) arranged on the water-cooled hollow shaft (36). The water-cooling sleeve (35) on the hollow shaft (36) and the water-cooling hollow shaft (36) and the water-cooling sleeve (35) together constitute a double-layer cooling mechanism; the water-cooling sleeve (35) is provided with a water inlet 1 (37) and a water outlet 1 (38), and the water-cooling hollow shaft (36) is provided with a water inlet 2 (39) and a water outlet 2 (3X); the lower ends of the cyclone separation cylinder (1) and the gravity settling chamber (2) are respectively provided with an ash collecting hopper 1 (12) and an ash collecting hopper 2 (21), and both the ash collecting hopper 1 (12) and the ash collecting hopper 2 (21) are of a reduced diameter structure with an inner diameter gradually decreasing from top to bottom; a plurality of feed ports are opened on the water-cooling sleeve (35), and the lower ends of the ash collecting hopper 1 (12) and the ash collecting hopper 2 (21) are respectively connected to different feed ports.
2. The pyrolysis waste gas dust collecting device according to claim 1, characterized in that: The water inlet 1 (37) and the water outlet 1 (38) are respectively provided at two ends of the water-cooling sleeve (35), the water inlet 1 (37) is located at the upper end of the water-cooling sleeve (35), and the water outlet 1 (38) is located at the lower end of the water-cooling sleeve (35); the water inlet 2 (39) and the water outlet 2 (3X) are both located at one end of the water-cooling hollow shaft (36) close to the water inlet 1 (37).
3. The pyrolysis waste gas dust collecting device according to claim 2, characterized in that: A rectangular connecting platform is provided on the water-cooling sleeve (35) extending upward from the feed inlet, and a rectangular ash outlet platform is provided at the lower ends of the first ash collecting hopper (12) and the second ash collecting hopper (21) to match the connecting platform, and a clamp-type butterfly valve (11) is provided between the connecting platform and the ash outlet platform.
4. The pyrolysis waste gas dust collecting device according to claim 3, characterized in that: An air vibrator (13) is provided on the conical cylinder wall of the ash collecting hopper 1 (12) and the ash collecting hopper 2 (21).
5. The pyrolysis waste gas dust collecting device according to claim 4, characterized in that: The water-cooled screw conveyor (3) further comprises a drive motor (3Y) located at the end of the water-cooling sleeve (35), the drive motor (3Y) being arranged close to a water outlet (38); a discharge port (34) is also arranged at the lower end of the water-cooling sleeve (35) on a side away from the drive motor (3Y).
6. The pyrolysis waste gas dust collecting device according to any one of claims 1 to 5, characterized in that: The air inlet duct (4) comprises an upper herringbone tube 1 (44) and an inclined tube 1 (45) and an inclined tube 2 (46) respectively connected to the lower ends of both sides of the herringbone tube 1 (44); a vertical tube 1 (47) is provided at the lower end of the inclined tube 1 (45), and an opening valve (41) is provided at the bottom end of the vertical tube 1 (47); the vertical tube 1 (47) and the inclined tube 1 (45) are connected by an elbow (42); a horizontal tube (48) is included between the inclined tube 2 (46) and the cyclone separation cylinder (1); the inclined tube 2 (46) and the horizontal tube (48) are connected by an elbow (42); an insertion tube (4X) is also connected to the horizontal tube (48) by a flange 1 (49), and the portion of the insertion tube (4X) extending into the cyclone separation cylinder (1) comprises a pointed head (4Y).
7. The pyrolysis waste gas dust collecting device according to claim 6, characterized in that: The connecting pipe (6) is an L-shaped pipe, in which the second vertical pipe (61) is connected to the gravity settling chamber (2); the air outlet pipe (7) comprises a third vertical pipe (71) connected to the upper end of the gravity settling chamber (2) and parallel to the second vertical pipe (61); the air outlet pipe (7) further comprises a second herringbone pipe (72) at the upper end and an inclined pipe (74) and an inclined pipe (75) respectively connected to the lower ends of both sides of the second herringbone pipe (72); the inclined pipe (74) and the third vertical pipe (71) are connected via an elbow (42); the lower end of the fourth inclined pipe (75) is connected to a fourth vertical pipe (73) connected to the incinerator.
8. The pyrolysis waste gas dust collecting device according to claim 7, characterized in that: The upper ends of the herringbone tube 1 (44) and the herringbone tube 2 (72) are provided with blind covers (43); the ash collecting hopper 2 (21) comprises two evenly arranged ones.