Polyethylene wax modification reaction kettle
By introducing a combination of spiral guide plates and heating tubes into the polyethylene wax reactor, the problem of uneven heating was solved, achieving more efficient temperature control and heating uniformity, and improving the effect of polyethylene wax modification reaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ZHONGZI PLASTICS CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-28
AI Technical Summary
The existing polyethylene wax reactor has low heating efficiency, especially the temperature near the center is much lower than that on the outside, resulting in uneven heating.
The design employs a combination of spiral guide plates and heating tubes. The spiral flow channel ensures uniform flow of the heating medium, while the baffle plates and spacers ensure uniform distribution of the heating medium within the reactor vessel. Combined with the heating medium within the jacket, this improves heating efficiency.
This achieved uniform heating within the reactor, improved heating efficiency, and ensured the uniformity and efficiency of the polyethylene wax reaction.
Smart Images
Figure CN224167491U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of polyethylene wax manufacturing technology, specifically a polyethylene wax modified reaction vessel. Background Technology
[0002] Polyethylene wax (PE wax), also known as polymer wax or simply polyethylene wax, is widely used due to its excellent cold resistance, heat resistance, chemical resistance, and abrasion resistance. During its manufacturing and modification processes, it requires heating, stirring, and cooling within a reaction vessel to promote the smooth progress of the chemical reaction. The reaction vessel is typically equipped with a jacket, through which a heating or cooling medium is circulated. Heating or cooling the reaction vessel body allows for temperature control and good safety. However, the heating medium tends to accumulate at the bottom of the jacket due to gravity, and the heating medium must first heat the reaction vessel body before heat can be transferred to the polyethylene wax inside. Furthermore, the temperature of the polyethylene wax towards the center is significantly lower than that of the outer layers, resulting in lower heating efficiency, which needs improvement. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a polyethylene wax modified reactor to address the above-mentioned defects and solve the problems mentioned in the background art.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a polyethylene wax modified reaction vessel, including a reaction vessel body, an upper cover disposed at the top of the reaction vessel body, and a jacket disposed on the outer wall of the reaction vessel body. An annular gap space is left between the inner wall of the jacket and the outer wall of the reaction vessel body. A first inlet is disposed at the top of one side of the jacket, and a first outlet is disposed at the bottom of the other side of the jacket. A spiral guide plate is disposed between the inner wall of the jacket and the outer wall of the reaction vessel body. The two ends of the spiral guide plate are respectively connected to the inner wall of the jacket and the outer wall of the reaction vessel body. The wall is fixedly connected, and the spiral guide plate forms a spiral flow channel in the annular space. Multiple heating tubes are arranged in a ring at the top of the top cover. The bottom end of the heating tubes penetrates the top cover and extends into the interior of the reactor tank. A baffle plate is arranged between the inner walls of the two ends of the heating tube. A first gap space is left between the two sides of the baffle plate and the inner wall of the heating tube. A second gap space is left between the bottom end of the baffle plate and the bottom end of the interior of the heating tube. A second inlet is provided on one side of the heating tube at the top of the top cover, and a second outlet is provided on the other side of the heating tube at the top of the top cover.
[0005] Furthermore, a discharge pipe is provided at the bottom of the reactor body, an electromagnetic control valve is provided on the discharge pipe, and a feed pipe is provided on one side of the top cover.
[0006] Furthermore, a rotating shaft extending into the interior of the reactor vessel is rotatably provided at the center of the bottom end of the upper cover. A stirring rod is provided at the bottom end of the outer surface of the rotating shaft. The stirring rod is located below the heating tube. A motor is provided at the center of the top end of the upper cover. The drive end of the motor is connected to the rotating shaft.
[0007] Furthermore, annular liquid inlet pipes are arranged inside the plurality of heating tubes and are connected to the second inlet in sequence. The top of the annular liquid inlet pipes is evenly provided with feed pipes. Annular liquid outlet pipes are arranged outside the plurality of heating tubes and are connected to the second outlet in sequence. The outer surface of the annular liquid outlet pipes is evenly provided with discharge pipes.
[0008] Furthermore, the outer surface of the jacket is provided with a heat insulation layer.
[0009] The beneficial effects of this utility model are:
[0010] This invention utilizes a combination of a spiral guide plate, heating tubes, a baffle plate, a first space, a second space, a second inlet, and a second outlet. The heating medium flows along the spiral heat-conducting plate, making uniform contact with the outer surface of the reactor vessel. It is not affected by gravity and does not accumulate at the bottom of the jacket, resulting in more uniform heating. Furthermore, the heating medium can enter the interior of the heating tubes through the second inlet, flow along the baffle plate, from the first space on one side through the second space, then into the first space on the other side, and finally out through the second outlet. The multiple annularly arranged heating tubes directly heat the interior of the reactor vessel, working in conjunction with the heating medium inside the jacket to effectively improve the heating efficiency of the reactor. Attached Figure Description
[0011] The foregoing and other objects, features and advantages of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
[0012] Figure 1 This is a front sectional view of the present invention.
[0013] Figure 2 This is a top view of the heating tube of this utility model.
[0014] Figure 3 This is a top sectional view of the heating tube of this utility model.
[0015] Figure 4 This is a cross-sectional view of the outer surface of the reaction vessel of this utility model.
[0016] The components are as follows: 1. Reactor body; 2. Top cover; 3. Jacket; 301. First inlet; 302. First outlet; 303. Insulation layer; 4. Spiral guide plate; 5. Heating tube; 501. Baffle plate; 502. First partition space; 503. Second partition space; 504. Second inlet; 505. Second outlet; 6. Discharge pipe; 601. Electromagnetic control valve; 7. Feed pipe; 8. Rotary shaft; 9. Stirring rod; 10. Motor; 11. Annular liquid inlet pipe; 1101. Feed pipe; 12. Annular liquid outlet pipe; 1201. Discharge pipe. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Reference Figure 1-4 As shown, the polyethylene wax modification reactor includes a reactor body 1, a top cover 2 disposed at the top of the reactor body 1, and a jacket 3 disposed on the outer wall of the reactor body 1. An annular space is left between the inner wall of the jacket 3 and the outer wall of the reactor body 1. A first inlet 301 is disposed at the top of one side of the jacket 3, and a first outlet 302 is disposed at the bottom of the other side of the jacket 3. The heating medium enters the annular space of the jacket 3 from the first inlet 301 and then exits from the first outlet 302, continuously flowing into the jacket 3. A heating medium is introduced to heat the reactor vessel 1. A spiral guide plate 4 is provided between the inner wall of the jacket 3 and the outer wall of the reactor vessel 1. The two ends of the spiral guide plate 4 are fixedly connected to the inner wall of the jacket 3 and the outer wall of the reactor vessel 1, respectively. The spiral guide plate 4 forms a spiral flow channel in the annular space. After the heating medium enters the jacket 3, it flows along the spiral guide plate 4 and then flows evenly along the outer surface of the reactor vessel 1 inside the spiral flow channel. It will not be affected by gravity and will not collect at the bottom of the jacket, making the heating more uniform.
[0019] Multiple heating tubes 5 are arranged in a ring at the top of the cover 2. The bottom ends of the heating tubes 5 penetrate the cover 2 and extend into the interior of the reactor body 1. A baffle plate 501 is provided between the inner walls of the two ends of the heating tubes 5. A first gap space 502 is left between the inner walls of the baffle plate 501. A second gap space 503 is left between the bottom end of the baffle plate 501 and the bottom end of the interior of the heating tube 5. A second inlet 504 is provided on one side of the heating tubes 5 at the top of the cover 2, and a second outlet 505 is provided on the other side of the heating tubes 5 at the top of the cover 2. The heating medium enters through the second inlet 504. Inside the heating tube 5, limited by the baffle plate 501, the heating medium flows from the first interval space 502 on one side through the second interval space 503 and then into the first interval space 502 on the other side, and then out from the second outlet 505, continuously feeding in the heating medium to heat the heating tube 5. The multiple heating tubes 5 arranged in a ring directly heat the inside of the reactor tank 1, working together with the heating medium inside the jacket 3 to effectively improve the heating efficiency of the reactor. External equipment simultaneously supplies heating medium to the heating tubes 5 and the jacket 3.
[0020] The bottom of the reactor tank 1 is provided with a discharge pipe 6, and an electromagnetic control valve 601 is provided on the discharge pipe 6. The electromagnetic control valve 601 controls the discharge pipe 6 to be in an open or closed state. A feed pipe 7 is provided on one side of the top cover 2. The discharge pipe 6 is used for discharging material, and the feed pipe 7 is used for feeding material into the reactor tank 1.
[0021] A rotating shaft 8 extending into the interior of the reactor vessel 1 is rotatably installed at the center of the bottom end of the top cover 2. A stirring rod 9 is installed at the bottom end of the outer surface of the rotating shaft 8. The stirring rod 9 is located below the heating tube 5. A motor 10 is installed at the center of the top end of the top cover 2. The drive end of the motor 10 is connected to the rotating shaft 8. The motor 10 drives the rotating shaft 8 to rotate, which in turn drives the stirring rod 9 to rotate, so that the material is fully stirred and reacted evenly.
[0022] Multiple heating tubes 5 are provided with annular inlet pipes 11 connected to the second inlet 504 in sequence on their inner sides. The top of the annular inlet pipes 11 is provided with feed pipes 1101 evenly distributed. Multiple heating tubes 5 are provided with annular outlet pipes 12 connected to the second outlet 505 in sequence on their outer sides. The outer surface of the annular outlet pipes 12 is provided with discharge pipes 1201 evenly distributed. The feed pipes 1101 are connected to the conveying equipment through the pipeline, and the discharge pipes 1201 are connected to the external recycling equipment through the pipeline. The heating medium is centrally supplied to the multiple heating tubes 5 through the annular inlet pipes 11 and centrally discharged through the annular outlet pipes 12, so as to continuously supply heating medium to the heating tubes 5.
[0023] The outer surface of the jacket 3 is provided with an insulation layer 303, which can be an aerogel felt covering the outer surface of the jacket 3 to prevent the heating medium from exchanging heat with the outside through the side wall of the jacket and improve the heating efficiency.
[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A polyethylene wax-modified reaction vessel, comprising a reaction vessel body (1), a top cover (2) disposed at the top of the reaction vessel body (1), and a jacket (3) disposed on the outer wall of the reaction vessel body (1), wherein an annular gap space is left between the inner wall of the jacket (3) and the outer wall of the reaction vessel body (1), a first inlet (301) is disposed at the top of one side of the jacket (3), and a first outlet (302) is disposed at the bottom of the other side of the jacket (3), characterized in that: A spiral guide plate (4) is provided between the inner wall of the jacket (3) and the outer wall of the reactor body (1). The two ends of the spiral guide plate (4) are fixedly connected to the inner wall of the jacket (3) and the outer wall of the reactor body (1), respectively. The spiral guide plate (4) forms a spiral flow channel in the annular space. Multiple heating tubes (5) are arranged in a ring at the top of the cover. The bottom end of the heating tube (5) penetrates the cover (2) and extends into the reactor body (1). A baffle plate (501) is provided between the inner walls of the two ends of the heating tube (5). A first gap space (502) is left between the inner walls of the baffle plate (501). A second gap space (503) is left between the bottom end of the baffle plate (501) and the bottom end of the heating tube (5). A second inlet (504) is provided on one side of the heating tube (5) at the top of the cover (2). A second outlet (505) is provided on the other side of the heating tube (5) at the top of the cover (2).
2. The polyethylene wax-modified reaction vessel according to claim 1, characterized in that: The bottom of the reactor vessel (1) is provided with a discharge pipe (6), and an electromagnetic control valve (601) is provided on the discharge pipe (6). A feed pipe (7) is provided on one side of the top cover (2).
3. The polyethylene wax-modified reaction vessel according to claim 1, characterized in that: The bottom center of the upper cover (2) is rotatably provided with a rotating shaft (8) extending into the interior of the reactor body (1). The bottom end of the outer surface of the rotating shaft (8) is provided with a stirring rod (9). The stirring rod (9) is located below the heating tube (5). The top center of the upper cover (2) is provided with a motor (10). The driving end of the motor (10) is connected to the rotating shaft (8).
4. The polyethylene wax-modified reaction vessel according to claim 1, characterized in that: The inner side of the plurality of heating tubes (5) is provided with an annular liquid inlet pipe (11) that is sequentially connected to the second inlet (504). The top end of the annular liquid inlet pipe (11) is uniformly provided with a feed pipe (1101). The outer side of the plurality of heating tubes (5) is provided with an annular liquid outlet pipe (12) that is sequentially connected to the second outlet (505). The outer surface of the annular liquid outlet pipe (12) is uniformly provided with a discharge pipe (1201).
5. The polyethylene wax-modified reaction vessel according to claim 1, characterized in that: The outer surface of the jacket (3) is provided with a heat insulation layer (303).