Industrial waste salt pyrolysis oxidation comprehensive treatment system
By introducing a stirring mechanism and a feeding mechanism into the rotary kiln, the problems of uneven material tumbling and coking during the pyrolysis of waste salt were solved, achieving more efficient pyrolysis oxidation treatment and heat transfer effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU PIONEER ENVIRONMENTAL PROTECTION MATERIALS CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-14
AI Technical Summary
In existing integrated treatment systems for industrial waste salt pyrolysis and oxidation, uneven material tumbling during the pyrolysis reaction in rotary kilns leads to localized overheating or incomplete pyrolysis. Furthermore, high-viscosity waste salt tends to adhere to the kiln wall, forming a coking layer that affects heat transfer efficiency.
An integrated treatment system for industrial waste salt pyrolysis oxidation, comprising a stirring mechanism and a feeding mechanism, was designed. The system improves the uniformity of waste salt mixing through the rotation and revolution of the stirring rod and the scraping function of the wall scraper, and achieves a good sealing effect through the feeding mechanism to prevent air leakage.
It improves the pyrolysis and oxidation treatment effect of waste salt, enhances the heat transfer efficiency of rotary kiln, avoids the formation of coking layer, and improves the overall performance of the system.
Smart Images
Figure CN224487129U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial waste salt treatment technology, specifically to an integrated treatment system for industrial waste salt pyrolysis and oxidation. Background Technology
[0002] Industrial waste salt mainly refers to solid waste generated during industrial production processes, with inorganic salts as the main component. Industrial waste salt mainly contains various inorganic salts, such as sodium chloride and sodium sulfate, and may also contain various organic substances, heavy metals and other impurities. Industrial waste salt mainly comes from industries such as chemical, pharmaceutical, agrochemical and coal chemical industries. The treatment technologies for industrial waste salt include wet treatment and dry treatment.
[0003] The integrated treatment system for industrial waste salt pyrolysis and oxidation can be divided into pyrolysis reaction process, oxidation combustion process, and flue gas purification process. The pyrolysis reaction process is carried out in an oxygen-free or low-oxygen environment, in which the organic matter in the waste salt is pyrolyzed into gaseous, liquid, and solid products by heating. The oxidation combustion process is used to completely oxidize and decompose the organic matter in the pyrolysis gas, while treating the residual carbon in the solid residue. The flue gas purification process is used to remove pollutants from the flue gas to ensure that the emissions meet the standards. The inorganic salts after the treatment are recovered through multiple processes to achieve resource utilization.
[0004] However, considering the existing industrial waste salt pyrolysis oxidation integrated treatment system, during the pyrolysis reaction process, the material inside the rotary kiln is prone to uneven tumbling as the cylinder rotates, leading to localized overheating or incomplete pyrolysis of the industrial waste salt. Furthermore, high-viscosity waste salt or tar-containing components tend to adhere to the kiln wall, forming a coking layer, which affects the heat transfer efficiency of the rotary kiln and consequently reduces the effectiveness of the industrial waste salt pyrolysis oxidation integrated treatment system. Utility Model Content
[0005] The purpose of this invention is to provide a comprehensive treatment system for industrial waste salt pyrolysis and oxidation.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A comprehensive treatment system for industrial waste salt pyrolysis and oxidation is provided, including a rotary kiln, an oxidizer, a quench tower, a stirring mechanism, and a feeding mechanism. The rotary kiln is connected to the oxidizer and the quench tower in sequence through a conveying pipe. The rotary kiln and the oxidizer are connected through a connecting pipe. The stirring mechanism is fixedly installed on the rotary kiln and is used to stir the waste salt in the rotary kiln. The feeding mechanism is fixedly installed on the rotary kiln and is used to add the waste salt into the rotary kiln.
[0008] The stirring mechanism includes two stirring rods and a drive mechanism, which is used to drive the two stirring rods to move and rotate.
[0009] Furthermore, the stirring mechanism also includes a motor, a rotating shaft, and two scraper rods. The motor is fixedly mounted on the rotary kiln via a baffle, the rotating shaft is rotatably mounted on the baffle, and the rotating shaft is fixedly connected to the output shaft of the motor. The two scraper rods are fixedly mounted on the rotating shaft via two connecting plates, and each of the two connecting plates has a groove, through which the two stirring rods pass.
[0010] Furthermore, the drive mechanism includes two moving blocks, two rings, a cylindrical rod, two cylindrical blocks, and an eccentric ring. The two moving blocks are connected by the cylindrical rod, which passes through the rotating shaft. The two rings are hinged to the moving blocks by two connecting rods, and are rotatably connected to two stirring rods. The eccentric ring is fixedly installed on the baffle. The two cylindrical blocks are fixedly installed on the two moving blocks, and both cylindrical blocks are in contact with the inner wall of the eccentric ring.
[0011] Furthermore, the drive mechanism also includes two racks and two gears. The two racks are fixedly mounted on two connecting plates, and the two gears are fixedly mounted on two stirring rods, with the two gears meshing with the two racks respectively.
[0012] Furthermore, the feeding mechanism includes a feeding hopper, a cover plate, a sealing ring, a fixing block, and an insert block. The feeding hopper is fixedly installed on the rotary kiln, the cover plate is hinged to the feeding hopper, the sealing ring is fixedly installed on the cover plate, the fixing block is fixedly installed on the feeding hopper, and the insert block is fixedly installed on the cover plate, with the insert block and the fixing block being inserted into each other.
[0013] Furthermore, the feeding mechanism also includes a snap-fit post and a pull rod. The snap-fit post is connected to the fixed block by a spring, and the snap-fit post and the fixed block are slidably connected. The pull rod is fixedly installed on the snap-fit post and passes through the fixed block. A round hole is opened on the insert block, and the snap-fit post snaps into the round hole.
[0014] The beneficial effects of this utility model are as follows: This industrial waste salt pyrolysis oxidation integrated treatment system, through its set stirring and driving mechanisms, can drive the stirring rod inside the rotary kiln to rotate and revolve simultaneously, thereby improving the stirring range and effect of the waste salt. Furthermore, the set scraper rods remove the coking layer adhering to the inner wall of the rotary kiln, thus improving the overall performance of the industrial waste salt pyrolysis oxidation integrated treatment system. In addition, the set feeding mechanism provides a good sealing effect on the feed hopper of the rotary kiln after the industrial waste salt is added, preventing air from entering the rotary kiln or gas leakage, further improving the overall performance of the industrial waste salt pyrolysis oxidation integrated treatment system. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic cross-sectional view of the rotary kiln of this utility model;
[0018] Figure 3 This is a schematic diagram of the main structure of the stirring mechanism of this utility model;
[0019] Figure 4 This is a cross-sectional view of the connecting plate of this utility model;
[0020] Figure 5 This is a schematic diagram of the disassembled structure of the baffle and cylindrical block of this utility model;
[0021] Figure 6 This is a schematic diagram of the disassembled structure of the feeding mechanism of this utility model.
[0022] In the diagram: 1. Rotary kiln; 2. Oxidizer; 3. Quenching tower; 4. Conveying pipe; 5. Connecting pipe; 6. Agitating mechanism; 61. Baffle; 62. Motor; 63. Rotating shaft; 64. Connecting plate; 65. Scraper rod; 66. Agitating rod; 67. Slide chute; 68. Drive mechanism; 681. Moving block; 682. Connecting rod; 683. Ring; 684. Cylindrical rod; 685. Rack; 686. Gear; 687. Cylindrical block; 688. Eccentric ring; 7. Feeding mechanism; 71. Feeding hopper; 72. Cover plate; 73. Sealing ring; 74. Fixing block; 75. Insert block; 76. Round hole; 77. Snap-fit post; 78. Spring; 79. Pull rod. Detailed Implementation
[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0025] Reference Figure 1 and Figure 2The industrial waste salt pyrolysis and oxidation integrated treatment system shown includes a rotary kiln 1, an oxidizer 2, a quench tower 3, a stirring mechanism 6, and a feeding mechanism 7. The rotary kiln 1 is connected to the oxidizer 2 and the quench tower 3 sequentially via a conveying pipe 4. The rotary kiln 1 is used for pyrolysis treatment of industrial waste salt, and the oxidizer 2 is used for combustion and decomposition of the residue after pyrolysis treatment. The flue gas generated during pyrolysis and oxidation combustion is conveyed to the quench tower 3 for rapid cooling and purification via the conveying pipe 4. The rotary kiln 1 and the oxidizer 2 are connected by a connecting pipe 5, through which the flue gas generated during pyrolysis and oxidation combustion is transported to the quench tower 3 for rapid cooling and purification. The residue produced after pyrolysis in rotary kiln 1 is transported to oxidizer 2 for oxidation and combustion. A stirring mechanism 6 is fixedly installed on rotary kiln 1 to stir the waste salt inside. Simultaneously, the stirring mechanism 6 can scrape and clean the coke adhering to the inner wall of rotary kiln 1. A feeding mechanism 7 is fixedly installed on rotary kiln 1 to add waste salt into it. The feeding mechanism 7 provides a good sealing effect for rotary kiln 1 when the feeding hopper 71 is closed. The stirring mechanism 6 includes two stirring rods 66 and a drive mechanism 68. The drive mechanism 68 drives the two stirring rods 66 to move and rotate. The rotation and movement of the two stirring rods 66 improves the stirring range and effect on the waste salt, thereby enhancing the uniformity of the waste salt heating process.
[0026] Reference Figures 1 to 3 The stirring mechanism 6 also includes a motor 62, a rotating shaft 63, and two scraper rods 65. The motor 62 is fixedly installed on the rotary kiln 1 via a baffle 61. Starting the motor 62 can drive the rotating shaft 63 to rotate. The rotating shaft 63 is rotatably installed on the baffle 61 and is fixedly connected to the output shaft of the motor 62. The rotation of the rotating shaft 63 can drive the connecting plate 64 to rotate. The two scraper rods 65 are fixedly installed on the rotating shaft 63 via two connecting plates 64, and each of the two connecting plates 64 has a groove 67. The rotation of the connecting plates 64 can drive the scraper rods 65 to rotate, thereby scraping and cleaning the coke adhering to the inner wall of the rotary kiln 1. The two stirring rods 66 pass through the two grooves 67 respectively. The rotation of the connecting plates 64 can drive the stirring rods 66 to rotate and stir around the rotating shaft 63.
[0027] Reference Figure 3 and Figure 5The drive mechanism 68 includes two movable blocks 681, two rings 683, a cylindrical rod 684, two cylindrical blocks 687, and an eccentric ring 688. The two movable blocks 681 are connected by the cylindrical rod 684, which passes through the rotating shaft 63. The two movable blocks 681 are staggered, and the cylindrical rod 684 guides and supports the movable blocks 681. The movement of the movable blocks 681 drives the connecting rod 682 to move. The two rings 683 are hinged to the movable blocks 681 through the two connecting rods 682, and the two rings 683 are rotatably connected to the two stirring rods 66. The movement of the connecting rods 682 drives the stirring rod 687 to move. The moving ring 683 moves, thereby driving the stirring rod 66 to move along the slide groove 67. The eccentric ring 688 is fixedly installed on the baffle 61, and the center of the eccentric ring 688 is offset from the center of the rotating shaft 63. The two cylindrical blocks 687 are fixedly installed on the two moving blocks 681 respectively, and the two cylindrical blocks 687 are in contact with the inner wall of the eccentric ring 688. Through the rotation effect of the rotating shaft 63, the cylindrical rod 684 and the moving block 681 can be driven to rotate, thereby causing the cylindrical block 687 to move along the inner wall of the eccentric ring 688. This causes the two moving blocks 681 to reciprocate, driving the two stirring rods 66 to move simultaneously in the same direction.
[0028] Reference Figure 3 and Figure 4 The drive mechanism 68 also includes two racks 685 and two gears 686. The two racks 685 are fixedly mounted on the two connecting plates 64 respectively. The fixing effect of the racks 685 prevents them from falling off. The two gears 686 are fixedly mounted on the two stirring rods 66 respectively, and the two gears 686 mesh with the two racks 685 respectively. The movement of the stirring rods 66 can drive the gears 686 to move. Since the gears 686 mesh with the racks 685, the gears 686 can drive the stirring rods 66 to rotate.
[0029] Reference Figure 1 and Figure 6The feeding mechanism 7 includes a feeding hopper 71, a cover plate 72, a sealing ring 73, a fixing block 74, and an insert block 75. The feeding hopper 71 is fixedly installed on the rotary kiln 1. By adding waste salt into the feeding hopper 71, it can fall into the rotary kiln 1 for pyrolysis treatment. The cover plate 72 is hinged to the feeding hopper 71. Through the hinge effect of the cover plate 72, the feeding hopper 71 can be opened and closed. The sealing ring 73 is fixedly installed on the cover plate 72. Through the setting of the sealing ring 73, the cover... The cover plate 72 closes the feed hopper 71. The cover plate 72 and the feed hopper 71 can compress the sealing ring 73, thereby causing the sealing ring 73 to expand and deform, which has a sealing effect between the cover plate 72 and the feed hopper 71. The fixing block 74 is fixedly installed on the feed hopper 71, and the insert block 75 is fixedly installed on the cover plate 72. The insert block 75 and the fixing block 74 are inserted into each other. Through the insertion effect of the insert block 75 and the fixing block 74, the cover plate 72 can be limited, so that the cover plate 72 remains in a fixed closed state.
[0030] Reference Figure 6 The feeding mechanism 7 also includes a locking post 77 and a pull rod 79. The locking post 77 is connected to the fixed block 74 by a spring 78, and the locking post 77 and the fixed block 74 are slidably connected. Through the elastic force of the spring 78, the locking post 77 is always locked with the round hole 76 when no external force is applied. The pull rod 79 is fixedly installed on the locking post 77 and passes through the fixed block 74. Through the movement of the pull rod 79, the locking post 77 can be driven to squeeze the spring 78, thereby releasing the locking effect of the locking post 77 with the round hole 76. The insertion block 75 has a round hole 76, and the locking post 77 is locked with the round hole 76. Through the locking effect of the locking post 77 and the round hole 76, the insertion block 75 can be limited.
[0031] Reference Figures 1 to 6 This integrated pyrolysis and oxidation treatment system for industrial waste salt, through its set stirring and driving mechanisms, enables the stirring rods inside the rotary kiln to rotate and revolve simultaneously, thereby improving the stirring range and effect on the waste salt. The system also features a scraper to remove the coking layer adhering to the inner wall of the rotary kiln, enhancing its overall performance. Furthermore, the feeding mechanism effectively seals the feed hopper of the rotary kiln after the waste salt is added, preventing air from entering or leaking into the kiln, further improving the system's effectiveness.
[0032] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.
Claims
1. A comprehensive treatment system for industrial waste salt through pyrolysis and oxidation, characterized in that, The system includes a rotary kiln (1), an oxidizer (2), a quench tower (3), a stirring mechanism (6), and a feeding mechanism (7). The rotary kiln (1) is connected to the oxidizer (2) and the quench tower (3) in sequence through a conveying pipe (4). The rotary kiln (1) and the oxidizer (2) are connected through a connecting pipe (5). The stirring mechanism (6) is fixedly installed on the rotary kiln (1) and is used to stir the waste salt in the rotary kiln (1). The feeding mechanism (7) is fixedly installed on the rotary kiln (1) and is used to add waste salt into the rotary kiln (1). The stirring mechanism (6) includes two stirring rods (66) and a driving mechanism (68), which is used to drive the two stirring rods (66) to move and rotate.
2. The integrated treatment system for industrial waste salt pyrolysis and oxidation according to claim 1, characterized in that, The stirring mechanism (6) also includes a motor (62), a rotating shaft (63) and two scraper rods (65). The motor (62) is fixedly installed on the rotary kiln (1) through a baffle (61). The rotating shaft (63) is rotatably installed on the baffle (61) and is fixedly connected to the output shaft of the motor (62). The two scraper rods (65) are fixedly installed on the rotating shaft (63) through two connecting plates (64), and each of the two connecting plates (64) is provided with a sliding groove (67). The two stirring rods (66) pass through the two sliding grooves (67) respectively.
3. The integrated treatment system for industrial waste salt pyrolysis and oxidation according to claim 2, characterized in that, The drive mechanism (68) includes two moving blocks (681), two rings (683), a cylindrical rod (684), two cylindrical blocks (687), and an eccentric ring (688). The two moving blocks (681) are connected by the cylindrical rod (684), and the cylindrical rod (684) passes through the rotating shaft (63). The two rings (683) are respectively hinged to the moving blocks (681) by two connecting rods (682), and the two rings (683) are respectively rotatably connected to the two stirring rods (66). The eccentric ring (688) is fixedly installed on the baffle (61). The two cylindrical blocks (687) are respectively fixedly installed on the two moving blocks (681), and the two cylindrical blocks (687) are in contact with the inner wall of the eccentric ring (688).
4. The integrated treatment system for industrial waste salt pyrolysis and oxidation according to claim 3, characterized in that, The drive mechanism (68) further includes two racks (685) and two gears (686). The two racks (685) are fixedly mounted on two connecting plates (64) respectively, and the two gears (686) are fixedly mounted on two stirring rods (66) respectively, and the two gears (686) mesh with the two racks (685) respectively.
5. The integrated treatment system for industrial waste salt pyrolysis and oxidation according to claim 1, characterized in that, The feeding mechanism (7) includes a feeding hopper (71), a cover plate (72), a sealing ring (73), a fixing block (74), and an insert block (75). The feeding hopper (71) is fixedly installed on the rotary kiln (1). The cover plate (72) is hinged to the feeding hopper (71). The sealing ring (73) is fixedly installed on the cover plate (72). The fixing block (74) is fixedly installed on the feeding hopper (71). The insert block (75) is fixedly installed on the cover plate (72), and the insert block (75) is inserted into the fixing block (74).
6. The integrated treatment system for industrial waste salt pyrolysis and oxidation according to claim 5, characterized in that, The feeding mechanism (7) also includes a snap-fit post (77) and a pull rod (79). The snap-fit post (77) is connected to the fixed block (74) by a spring (78), and the snap-fit post (77) is slidably connected to the fixed block (74). The pull rod (79) is fixedly installed on the snap-fit post (77) and passes through the fixed block (74). The insert block (75) has a round hole (76), and the snap-fit post (77) snaps into the round hole (76).