Polymerization kettle for producing petroleum resin

Abstract

The utility model provides a polymerizer for petroleum resin production, including cauldron body, the inside top of cauldron body is fixedly arranged with the rotating seat, the inside upside of rotating seat is rotatably arranged with the rotating pipe, the outer camber surface of rotating pipe is fixedly arranged with a plurality of support that is evenly distributed with the vertical center of rotating pipe, the side of support near cauldron body horizontal center is all fixedly arranged with the sliding seat, the inside of sliding seat all is slidably arranged with the connecting block. Through the polymerizer for petroleum resin production of the utility model, the movement mode of revolution, rotation and lifting of the stirring paddle is controlled, extremely complex fluid motion trajectory can be formed in the cauldron, strong radial, axial and tangential flow field is generated, thereby thoroughly eliminating the dead angle area of conventional stirrers, ensuring that C9 fraction raw material and catalyst (boron trifluoride diethyl ether solution) realize rapid, uniform mixing at molecular level, laying the foundation for the full and consistent polymerization reaction.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum resin production technology, and specifically relates to a polymerization reactor for petroleum resin production. Background Technology

[0002] Petroleum resins are a class of thermoplastic resins produced primarily from C5 and C9 fractions, byproducts of petroleum cracking, through processes such as pretreatment, polymerization, termination, and refining. They are not high polymers and typically have low molecular weights (hundreds to thousands). They are used as tackifying resins and film-forming resins in fields such as coatings, adhesives, rubber, and inks. The production process includes raw material pretreatment, polymerization, catalyst removal, and vacuum distillation. First, a distillation column is used to extract the refined C9 fraction as the raw material for the polymer. Then, a polymerization reaction is carried out. During the polymerization reaction, a catalyst is added for catalysis. Finally, the catalyst is removed to obtain the polymerization liquid, which is then distilled under vacuum to obtain C9 petroleum resin.

[0003] Existing polymerization reactors for petroleum resin production typically use stainless steel (such as 304, 316L) or higher-grade Hastelloy alloys and glass-lined surfaces for the reactor body and internal components. They are then controlled by anchor-type, frame-type, turbine-type, or combinations thereof stirring systems to ensure strong mixing and heat transfer across the entire reactor range from low to high viscosity. Coils are installed inside the reactor to increase the heat transfer area and improve the heating / cooling rate. However, in actual use, traditional stirrers can create certain dead zones, which can lead to uneven catalyst dispersion, gel formation, or an excessively wide molecular weight distribution, affecting product quality. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a polymerization reactor for petroleum resin production. By controlling the revolution, rotation, and lifting motion modes of the stirring paddle, it can form an extremely complex fluid motion trajectory within the reactor, generating strong radial, axial, and tangential flow fields. This completely eliminates the dead zones commonly found in traditional stirrers, ensuring rapid and uniform mixing of the C9 fraction feedstock and the catalyst (boron trifluoride diethyl ether solution) at the molecular level, laying the foundation for a full and consistent polymerization reaction.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a polymerization reactor for petroleum resin production, including a reactor body, a rotating seat fixedly arranged at the top of the interior of the reactor body, and a rotating tube rotatably arranged on the upper side of the interior of the rotating seat; Multiple supports are fixedly installed on the outer arc surface of the rotating tube, evenly distributed around the vertical center of the rotating tube. Each support is fixedly installed on the side near the horizontal center of the vessel body. A connecting block is slidably installed inside each of the supports. A drive seat is fixedly installed in the middle of the outer arc surface of the rotating tube. Multiple sliding cylinders are fixedly installed on the upper and lower sides of the drive seat, evenly distributed around the vertical center of the rotating tube. A slider is slidably installed inside each of the sliding cylinders. A rotating rod is rotatably installed between the slider and the vertically adjacent connecting block. A stirring paddle is fixedly sleeved on the outer arc surface of each rotating rod.

[0006] As a further improvement of this utility model, a splined cylinder is rotatably installed on the side of the support away from the vertical center of the rotating tube. A splined rod is slidably installed inside the splined cylinder. The ends of the splined rods are fixed to the adjacent rotating rods by couplings. A bevel gear 1 is fixedly sleeved on the outer arc surface of the splined cylinder. A linkage rod is rotatably installed between the support and the adjacent rotating tube. A bevel gear 2 is fixedly sleeved on the end of the linkage rod near the rotating rod, and a driven gear 2 is fixedly sleeved on the end of the linkage rod away from the rotating rod. An adjusting screw is rotatably installed inside the sliding cylinder. The adjusting screw is threadedly connected to the adjacent slider. A bevel gear 3 is fixedly installed on the side of the adjusting screw near the horizontal center of the vessel. Multiple driving rods are rotatably installed inside the drive base, evenly distributed around the vertical center of the rotating tube. A bevel gear 4 is fixedly sleeved on the end of the driving rod near the adjusting screw, and a driven gear 1 is fixedly sleeved on the end of the driving rod away from the adjusting screw.

[0007] As a further improvement of this utility model, a fixed column is fixedly installed at the top of the inner part of the rotating seat. A drive gear 1 is fixedly sleeved on the outer arc surface of the fixed column. All driven gears 1 are meshed with the drive gear 1. Multiple drive gears 2 are fixedly sleeved on the outer arc surface of the fixed column. The driven gears 2 are meshed with adjacent drive gears 2 respectively. A rotating gear 1 is fixedly sleeved on the upper side of the outer arc surface of the rotating tube. A rotating gear 2 is rotatably installed inside the rotating seat through a rotating shaft. The rotating gear 2 is meshed with the rotating gear 1. A servo motor is installed on the outer side of the rotating seat. The output shaft of the servo motor is fixed to the rotating shaft through a coupling.

[0008] As a further improvement of this utility model, a support frame is fixedly installed on the outer side of the vessel body, a feed pipe is fixedly installed at the upper end of the vessel body, and a discharge pipe is fixedly installed at the lower end of the vessel body. A solenoid valve one is fixedly installed at the upper end of the feed pipe, and a solenoid valve two is fixedly installed at the lower end of the discharge pipe. An inner coil is fixedly installed on the inner wall of the vessel body, and a heat exchanger is fixedly installed on the outer side of the support frame. Both ends of the inner coil are connected to the heat exchanger.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, it can achieve three-dimensional composite motion of the stirring paddle. Driven by a servo motor, the stirring paddle can not only revolve around the vertical central axis of the vessel, but also rotate around its own axis through a gear system (such as the meshing of driven gear 1 and driving gear 1). At the same time, it can move up and down reciprocally through the adjustment screw mechanism. This motion mode of revolution, rotation and lifting can form an extremely complex fluid motion trajectory in the vessel, generating strong radial, axial and tangential flow fields, thereby completely eliminating the dead zone area common in traditional stirrers. This ensures that the C9 fraction raw material and the catalyst (boron trifluoride diethyl ether solution) are mixed rapidly and uniformly at the molecular level, laying the foundation for the full and consistent polymerization reaction.

[0010] Secondly, the intense multi-directional stirring greatly increases the mass transfer area and heat transfer efficiency of the materials. On the one hand, this promotes full contact between the unsaturated components (such as styrene and indene) in the C9 fraction and the catalyst, which can effectively accelerate the rate of cationic polymerization and shorten the production cycle. On the other hand, the temperature control system composed of heat exchangers and internal coils can accurately maintain the reaction temperature in the reactor within a constant optimal range. A stable temperature environment helps to control the molecular weight distribution of the polymer and reduce side reactions, which is crucial for obtaining high-quality C9 petroleum resin products with lighter color, stable softening point, and consistent performance. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of the polymerization reactor for petroleum resin production according to this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the polymerization reactor for petroleum resin production according to this utility model; Figure 3 This is an enlarged structural diagram of point A in the polymerization reactor for petroleum resin production according to this utility model; Figure 4 This is an enlarged structural diagram of section B of the polymerization reactor for petroleum resin production according to this utility model.

[0013] In the diagram: 101, support frame; 102, vessel body; 103, feed pipe; 104, solenoid valve one; 105, discharge pipe; 106, solenoid valve two; 107, inner coil; 108, heat exchanger; 201, rotating seat; 202, rotating tube; 203, support; 204, slide; 205, connecting block; 206, drive seat; 207, slide cylinder; 208, slider; 209, rotating rod; 210, stirring paddle; 211. Splined cylinder; 212. Splined rod; 213. Bevel gear one; 214. Linkage rod; 215. Bevel gear two; 216. Adjusting screw; 217. Bevel gear three; 218. Drive rod; 219. Bevel gear four; 220. Driven gear one; 301. Fixed column; 302. Drive gear one; 303. Drive gear two; 304. Rotating gear one; 305. Rotating gear two; 306. Servo motor. Detailed Implementation

[0014] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0015] like Figure 2 , 4 As shown, it includes a vessel body 102, a rotating seat 201 is fixedly installed at the top of the interior of the vessel body 102, and a rotating tube 202 is rotatably installed on the upper side of the interior of the rotating seat 201; Multiple supports 203 are fixedly installed on the outer arc surface of the rotating tube 202, evenly distributed around the vertical center of the rotating tube 202. Each support 203 is fixedly installed on the side near the horizontal center of the vessel body 102. Each slide 204 has a connecting block 205 slidably installed inside it. A drive seat 206 is fixedly installed in the middle of the outer arc surface of the rotating tube 202. Multiple slide cylinders 207 are fixedly installed on the upper and lower sides of the drive seat 206, evenly distributed around the vertical center of the rotating tube 202. Each slide cylinder 207 has a slider 208 slidably installed inside it. A rotating rod 209 is rotatably installed between the slider 208 and the vertically adjacent connecting block 205. A stirring paddle 210 is fixedly sleeved on the outer arc surface of the rotating rod 209.

[0016] like Figure 2 , 3As shown, a splined cylinder 211 is rotatably mounted on the side of the support 203 away from the vertical center of the rotating tube 202. A splined rod 212 is slidably mounted inside the splined cylinder 211. The ends of the splined rods 212 are fixed to the adjacent rotating rods 209 by couplings. A bevel gear 213 is fixedly mounted on the outer arc surface of the splined cylinder 211. A linkage rod 214 is rotatably mounted between the support 203 and the adjacent rotating tube 202. A bevel gear 215 is fixedly mounted on the end of the linkage rod 214 near the rotating rod 209. A driven gear 215 is fixedly mounted on the end of the linkage rod 214 away from the rotating rod 209.

[0017] like Figure 2 , 4 As shown, each of the slide cylinders 207 has an adjusting screw 216 rotatably mounted inside. The adjusting screw 216 is threadedly connected to the adjacent slide block 208. A bevel gear 217 is fixedly mounted on the side of the adjusting screw 216 near the horizontal center of the vessel body 102. Multiple drive rods 218 are rotatably mounted inside the drive base 206, evenly distributed around the vertical center of the rotating tube 202. A bevel gear 219 is fixedly mounted on the end of the drive rod 218 near the adjusting screw 216, and a driven gear 220 is fixedly mounted on the end of the drive rod 218 away from the adjusting screw 216.

[0018] like Figure 2 , 3 As shown, a fixed post 301 is fixedly installed at the top of the interior of the rotating base 201. A drive gear 302 is fixedly sleeved on the outer arc surface of the fixed post 301. Driven gears 220 are all meshed with drive gears 302. Multiple drive gears 303 are fixedly sleeved on the outer arc surface of the fixed post 301. Driven gears 220 are meshed with adjacent drive gears 303. A rotating gear 304 is fixedly sleeved on the upper side of the outer arc surface of the rotating tube 202. A rotating gear 305 is rotatably installed inside the rotating base 201 via a rotating shaft. The rotating gear 305 is meshed with the rotating gear 304. A servo motor 306 is installed on the outer side of the rotating base 201. The output shaft of the servo motor 306 is fixed to the rotating shaft via a coupling.

[0019] According to another embodiment of the present invention, such as Figure 1 , 2 As shown, a support frame 101 is fixedly installed on the outer side of the vessel body 102, a feed pipe 103 is fixedly installed at the upper end of the vessel body 102, a discharge pipe 105 is fixedly installed at the lower end of the vessel body 102, a solenoid valve 104 is fixedly installed at the upper end of the feed pipe 103, and a solenoid valve 106 is fixedly installed at the lower end of the discharge pipe 105; an inner coil 107 is fixedly installed on the inner wall of the vessel body 102, a heat exchanger 108 is fixedly installed on the outer side of the support frame 101, and both ends of the inner coil 107 are connected to the heat exchanger 108.

[0020] During use, the solenoid valve 104 is controlled to operate, so that the C9 fraction of the raw material after distillation is fed into the reactor body 102 through the feed pipe 103, and then boron trifluoride diethyl ether solution (as a polymerization catalyst) is added into the reactor body 102. The servo motor 306 is controlled to run, so that the output shaft of the servo motor 306 drives the rotating gear 305 connected to it to rotate back and forth through the rotating shaft. Then, through the meshing relationship between the rotating gear 305 and the rotating gear 304, the rotating tube 202 where the rotating gear 304 is located is driven to rotate. In turn, the rotating tube 202 drives the stirring paddle 210 to rotate back and forth around the vertical center of the vessel body 102. During the reciprocating rotation of the rotating tube 202, the driven gear 220 rotates around the vertical center of the rotating tube 202. This rotation, in turn, causes the drive rod 218, where the driven gear 220 is located, to rotate through the meshing relationship between the driven gear 220 and the drive gear 302. This, in turn, causes the drive rod 218 to rotate the bevel gear 219, which is fixed at its end. This rotation, in turn, causes the adjusting screw 216, where the bevel gear 217 is located, to rotate through the meshing relationship between the bevel gear 219 and the bevel gear 217. This causes the adjusting screw 216 to rotate reciprocally. This, in turn, causes the slider 208 to move up and down during the reciprocating rotation of the rotating tube 202. This, in turn, causes the stirring paddle 210 to move up and down continuously during the reciprocating rotation of the vessel body 102. At the same time, the driven gear 202 drives the driven gear 2 to rotate around the vertical center of the rotating tube 202, which in turn drives the linkage rod 214 connected to it to rotate. This causes the linkage rod 214 to drive the bevel gear 215 fixed at its end to rotate. Then, through the meshing relationship between the bevel gear 215 and the bevel gear 213, the splined cylinder 211 where the bevel gear 213 is located is driven to rotate. As the splined cylinder 211 drives the stirring paddle 210 to rotate around the vertical center of the vessel 102 through the splined rod 212, it also rotates with the rotating tube 202. As the stirring paddle 210 reciprocates around the vertical center of the vessel 102, it also reciprocates along with the rotating tube 202. At the same time, the stirring paddle 210 moves up and down repeatedly as it reciprocates around the vertical center of the vessel 102, so that the stirring paddle 210 can quickly and evenly stir the material in the vessel 102 from multiple directions. During the stirring process, the operation of heat exchanger 108 is controlled so that the heat exchange medium circulates between heat exchanger 108 and inner coil 107, and the temperature inside the vessel 102 is controlled at the set constant temperature stage so as to achieve efficient reaction of raw material C9 fraction.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A polymerization reactor for petroleum resin production, comprising a reactor body (102), characterized in that: A rotating seat (201) is fixedly installed at the top of the inside of the vessel body (102), and a rotating tube (202) is rotatably installed on the upper side of the inside of the rotating seat (201); Multiple supports (203) are fixedly installed on the outer arc surface of the rotating tube (202), which are evenly distributed around the vertical center of the rotating tube (202). Each support (203) is fixedly installed on the side near the horizontal center of the vessel body (102). Each slide (204) is slidably installed inside the slide (204). A drive seat (206) is fixedly installed in the middle of the outer arc surface of the rotating tube (202). Multiple slide cylinders (207) are fixedly installed on the upper and lower sides of the drive seat (206), which are evenly distributed around the vertical center of the rotating tube (202). Each slide cylinder (207) is slidably installed inside the slide cylinder (207). Each slide cylinder (208) is rotatably installed between the slide cylinder (208) and the vertically adjacent connecting block (205). Each slide cylinder (209) is fixedly fitted with a stirring paddle (210).

2. The polymerization reactor for petroleum resin production as described in claim 1, characterized in that: Splined cylinders (211) are rotatably mounted on the side of the support (203) away from the vertical center of the rotating tube (202). Splined rods (212) are slidably mounted inside the splined cylinders (211). The ends of the splined rods (212) are fixed to the adjacent rotating rods (209) by couplings. A bevel gear (213) is fixedly mounted on the outer arc surface of the splined cylinders (211). A linkage rod (214) is rotatably mounted between the support (203) and the adjacent rotating tubes (202). A bevel gear (215) is fixedly mounted on the end of the linkage rod (214) near the rotating rod (209). A driven gear (215) is fixedly mounted on the end of the linkage rod (214) away from the rotating rod (209).

3. The polymerization reactor for petroleum resin production as described in claim 2, characterized in that: The sliding cylinder (207) is rotatably equipped with an adjusting screw (216), which is threadedly connected to the adjacent slider (208). The adjusting screw (216) is fixedly equipped with a bevel gear three (217) on the side of the adjusting screw (216) near the horizontal center of the vessel body (102). The drive seat (206) is rotatably equipped with a plurality of drive rods (218) evenly distributed around the vertical center of the rotating tube (202). The end of the drive rod (218) near the adjusting screw (216) is fixedly fitted with a bevel gear four (219), and the end of the drive rod (218) away from the adjusting screw (216) is fixedly fitted with a driven gear one (220).

4. The polymerization reactor for petroleum resin production as described in claim 3, characterized in that: A fixed column (301) is fixedly installed at the top of the inner part of the rotating seat (201). A drive gear 1 (302) is fixedly sleeved on the outer arc surface of the fixed column (301). All driven gears 1 (220) are meshed with the drive gear 1 (302). Multiple drive gears 2 (303) are fixedly sleeved on the outer arc surface of the fixed column (301). The driven gears 2 are meshed with the adjacent drive gears 2 (303) respectively.

5. The polymerization reactor for petroleum resin production as described in claim 4, characterized in that: A rotating gear one (304) is fixedly sleeved on the upper side of the outer arc surface of the rotating tube (202), and a rotating gear two (305) is rotatably arranged inside the rotating seat (201) through a rotating shaft. The rotating gear two (305) meshes with the rotating gear one (304).

6. The polymerization reactor for petroleum resin production as described in claim 5, characterized in that: Servo motors (306) are provided on the outer side of the rotating base (201), and the output shaft of the servo motor (306) is fixed to the rotating shaft by a coupling.

7. The polymerization reactor for petroleum resin production as described in claim 1, characterized in that: A support frame (101) is fixedly installed on the outside of the vessel body (102). A feed pipe (103) is fixedly installed at the upper end of the vessel body (102). A discharge pipe (105) is fixedly installed at the lower end of the vessel body (102). A solenoid valve one (104) is fixedly installed at the upper end of the feed pipe (103). A solenoid valve two (106) is fixedly installed at the lower end of the discharge pipe (105).

8. The polymerization reactor for petroleum resin production as described in claim 7, characterized in that: An inner coil (107) is fixedly installed on the inner wall of the vessel body (102), and a heat exchanger (108) is fixedly installed on the outer side of the support frame (101). Both ends of the inner coil (107) are connected to the heat exchanger (108).

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