Reaction kettle for petrochemical production process

Abstract

The utility model discloses a petrochemical production process reaction kettle which comprises a columnar kettle body, a rotating shaft is coaxially arranged in the kettle body, a plurality of vertical rollers are uniformly distributed on the circumference of an inner cavity of the kettle body, the rollers are attached to the inner wall of the kettle body, the upper end and the lower end of each roller are respectively connected with a supporting rod through a bearing, and the other end of each supporting rod is fixed with the rotating shaft. A material stirring device is arranged between each roller and the rotating shaft and freely rotates relative to the rotating shaft, a connecting rod is arranged between each material stirring device and the two supporting rods on each roller, one end of each connecting rod is hinged to the corresponding supporting rod, the middle of each connecting rod is slidably connected with the corresponding material stirring device, and a scraping plate is fixed to the other end of each connecting rod. When the angle between the supporting rod and the material stirring device is enlarged, the distance between the scraping plate and the inner wall of the kettle body is enlarged, and when the angle between the supporting rod and the material stirring device is minimum, the scraping plate is in contact with the inner wall of the kettle body.

Description

Technical Field

[0001] The utility model belongs to the field of petrochemical industry, in particular to a petrochemical production process reactor. Background Art

[0002] In the petrochemical industry, crude oil needs to go through multiple processes such as cracking, hydrogenation and desulfurization before it can be turned into fuel oil. During this process, many processes require the use of reactors to achieve the reaction conditions of each process, such as heating, cooling, stirring and distillation. However, petroleum raw materials are relatively viscous. If the raw materials on the inner wall of the reactor are not scraped off in time during processing in the reactor, the raw materials will easily solidify on the inner wall of the reactor, hindering the heat exchange between the reactor and the reactants, resulting in uncontrollable reaction conditions and the generation of excess by-products. Therefore, at this stage, many agitators in reactors are equipped with a scraping function. During the stirring process, the inner wall of the reactor is continuously scraped to prevent the reactants from contacting and agglomerating with a certain part of the reactor for a long time. This method not only has large friction resistance and increases the power consumption of the device, but also generates more heat, which is not suitable for processes that require cooling. Utility Model Content

[0003] The utility model aims to solve the problem that the agitator of the reactor at present consumes a lot of energy and generates excess heat when scraping the wall, and proposes a reactor for petrochemical production process.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A petrochemical production process reactor comprises a cylindrical reactor body, a rotating shaft is coaxially arranged in the reactor body, and a plurality of vertical rollers are evenly distributed around the circumference of the inner cavity of the reactor body, the rollers are in contact with the inner wall of the reactor body, and the upper and lower ends of each roller are connected to a support rod through bearings, and the other end of the support rod is fixed to the rotating shaft; a material diverter device is provided between each roller and the rotating shaft, and the material diverter device can rotate freely relative to the rotating shaft, and a connecting rod is provided between each material diverter device and the two support rods on each roller, one end of the connecting rod is hinged to the support rod, the middle part of the connecting rod is slidably connected to the material diverter device, and a scraper is fixed to the other end of the connecting rod; when the angle between the support rod and the material diverter device becomes larger, the distance between the scraper and the inner wall of the reactor body becomes larger, and when the angle between the support rod and the material diverter device is minimum, the scraper contacts the inner wall of the reactor body.

[0006] As a further description of the above technical solution:

[0007] The material-diverting device includes two square rods arranged upper and lower, and multiple vertical baffles are fixed between the two square rods. The multiple baffles are parallel to each other, and the normal vectors of the baffles do not intersect with the axis of the rotating shaft. Two sleeves are mounted on the rotating shaft, and the two sleeves are located between the two support rods on the same roller. The two square rods on the same material-diverting device are respectively fixed to the two sleeves on the rotating shaft, thereby realizing the free rotation of multiple material-diverting devices relative to the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] A cylindrical block is fixed on each opposite side of the two support rods connected to the roller, and a slider is fixed on each of the upper and lower ends of the material diverter device. A circular hole is opened at one end of the connecting rod, and a sliding groove is opened in the middle of the connecting rod. The connecting rod is hinged to the cylindrical block through the circular hole, and the two sliders on the material diverter device are respectively located in the sliding grooves on the two connecting rods; when the rotating shaft rotates, the material diverter device can be driven to rotate through the support rod and the connecting rod, and when the angle between the material diverter device and the support rod changes, the distance between the scraper fixed on the connecting rod and the inner wall of the kettle body also changes accordingly.

[0010] As a further description of the above technical solution:

[0011] A through hole is opened at the center of the upper end of the kettle body, and the upper end of the rotating shaft extends out of the kettle body from the through hole. A liquid inlet and a manhole are provided on the outside of the through hole, and a liquid outlet is provided at the lower end of the kettle body. Multiple support seats are fixed on the outer wall of the kettle body, and the multiple support seats are evenly distributed along the circumference of the kettle body, which is convenient for installing the kettle body.

[0012] As a further description of the above technical solution:

[0013] The support rod and the rotating shaft, the square rod and the shaft sleeve, and the baffle and the square rod are all connected by bolts to facilitate disassembly and cleaning, and each component can pass through the manhole to facilitate installation and maintenance.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] (1) The present invention scrapes the inner wall of the kettle through the roller during operation, thereby preventing the viscous material from agglomerating in contact with the kettle for a long time. Compared with the methods in the prior art, the present invention converts hard friction into rolling friction, which not only reduces friction and reduces motor energy consumption, but also avoids the disadvantage of excess heat generated by hard friction. For processes that require cooling, the solution proposed by the present invention can better guarantee the reaction conditions, has a wider range of applications, and is highly practical.

[0016] (2) The utility model is provided with multiple sets of material-dispensing devices on the inner sides of multiple rollers. The material-dispensing devices can not only gather the materials toward the center during operation to enhance the radial circulation of the materials, but also can form an outward impact flow of the cleaning liquid when cleaning the kettle body to improve the cleaning effect. In addition, the device is also provided with a connecting rod and a scraper between the material-dispensing device and the support rod on the roller. With the help of the rotation margin of the material-dispensing device and the liquid generating reaction forces in different directions on the material-dispensing device when the motor rotates forward and reverse, the material-dispensing device can automatically change the contact state between the scraper and the inner wall of the kettle body according to the working state. When performing cleaning work, the scraper contacts and scrapes the inner wall of the kettle body. When performing normal process reactions, the scraper is separated from the inner wall of the kettle body to avoid excessive wear and improve the service life of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main view of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a top view of the utility model during stirring operation;

[0021] Figure 5 This is a top view of the utility model during cleaning work;

[0022] Figure 6 This is a schematic diagram of the assembly of the rotating shaft 2, the support rod 4 and the roller 3 of the utility model;

[0023] Figure 7 This is a schematic diagram of the assembly of the shaft sleeve 9, square rod 7 and baffle 8 of the utility model;

[0024] Figure 8 This is a schematic diagram of the assembly of the connecting rod 5 and the scraper 6 of the utility model.

[0025] Legend: 1. Kettle body; 2. Rotating shaft; 3. Roller; 4. Support rod; 5. Connecting rod; 6. Scraper; 7. Square rod; 8. Baffle; 9. Bushing; 10. Cylindrical block; 11. Slider; 12. Round hole; 13. Slide; 14. Liquid inlet; 15. Manhole; 16. Liquid outlet; 17. Support seat. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention; the "up", "down", "left" and "right" mentioned in the description are based on the orientation of the main view, and "clockwise" and "counterclockwise" are based on the orientation of the top view.

[0027] See also Figure 1-8 The utility model provides a technical solution for a petrochemical production process reactor:

[0028] A petrochemical production process reactor, comprising a cylindrical reactor body 1, a through hole is opened at the center of the upper end of the reactor body 1, a liquid inlet 14 and a manhole 15 are arranged on the outside of the through hole, a liquid outlet 16 is arranged at the lower end of the reactor body 1, a plurality of support seats 17 are fixed on the outer wall of the reactor body 1, and the plurality of support seats 17 are evenly distributed along the circumference of the reactor body 1 to facilitate the installation of the reactor body 1, a rotating shaft 2 is coaxially provided in the through hole, and a plurality of vertical rollers 3 are evenly distributed on the circumference of the inner cavity of the reactor body 1, the rollers 3 are in contact with the inner wall of the reactor body 1, and the upper and lower ends of each roller 3 are There is a support rod 4 connected by a bearing, and the other end of the support rod 4 is fixed to the rotating shaft 2; a feeding device that can rotate freely relative to the rotating shaft 2 is provided between each roller 3 and the rotating shaft 2, and the feeding device comprises two square rods 7 arranged above and below, and a plurality of vertical baffles 8 are fixed between the two square rods 7, and the plurality of baffles 8 are parallel to each other, and the normal vectors of the baffles 8 do not intersect with the axis of the rotating shaft 2. Two shaft sleeves 9 are set on the rotating shaft 2, and the two shaft sleeves 9 are located between the two support rods 4 on the same roller 3. The two square rods 7 on the same feeding device are fixed to the two shaft sleeves 9 on the rotating shaft 2 respectively, and a cylindrical block 10 is fixed on the opposite side of the two support rods 4 connected to the roller 3, and a slider 11 is fixed at the upper and lower ends of the feeding device, and a connecting rod 5 is provided between each feeding device and the two support rods 4 on the corresponding side, and a circular hole 12 is opened at one end of the connecting rod 5, and a slide groove 13 is opened in the middle of the connecting rod 5. The connecting rod 5 is hinged to the cylindrical block 10 through the circular hole 12, and the two sliders 11 on the feeding device are respectively A scraper 6 is fixed to the other end of the connecting rod 5 in the slide groove 13 on the two connecting rods 5; when the angle between the support rod 4 and the material-dispensing device becomes larger, the distance between the scraper 6 and the inner wall of the kettle body 1 becomes larger, and when the angle between the support rod 4 and the material-dispensing device is minimum, the scraper 6 contacts the inner wall of the kettle body 1; the support rod 4 and the rotating shaft 2, the square rod 7 and the shaft sleeve 9, and the baffle 8 and the square rod 7 are all connected by bolts to facilitate disassembly and cleaning, and enable each component to pass through the manhole 15 for easy installation and maintenance.

[0029] Working principle:

[0030] Before use, the utility model fixes the kettle body 1 in a designated position through the support base 17, inserts the lower end of the rotating shaft 2 into the kettle body 1 through the through hole, connects the upper end of the rotating shaft 2 to the motor, and then introduces each component into the kettle body 1 through the manhole 15 and installs them one by one, ensuring that when the rotating shaft 2 rotates counterclockwise, the baffle 8 can gather the material to the center of the kettle body 1, and when the rotating shaft 2 rotates counterclockwise, the baffle 8 is located behind the rotation of the drum 3;

[0031] When in use, close the liquid outlet 16, add the material into the kettle body 1 through the liquid inlet 14, turn on the motor power, the motor drives the shaft 2 to rotate counterclockwise, and the shaft 2 drives the roller 3 to do circular motion in the kettle body 1 through the support rod 4. Since the roller 3 is always in contact with the inner wall of the kettle body 1, the roller 3 revolves around the shaft 2 and rotates around its own axis, thereby squeezing the reactants near the inner wall of the kettle body 1 forward in the direction of rotation. At the same time, no hard friction is generated between the roller 3 and the inner wall of the kettle body 1, avoiding the generation of excess heat and reducing the motor rotation load. Since the baffle 8 can gather the material to the center of the kettle body 1 at this time, the material will also give the baffle 8 a clockwise reaction force, and because a connecting rod 5 is provided between the support rod 4 and the square rod 7, the baffle 8 is always located behind the drum 3 under the drive of the connecting rod 5 and rotates counterclockwise with the rotating shaft 2, and the slider 11 is located in the chute 13 near the end of the scraper; at this time, the drum 3 squeezes the material forward to achieve the effect of scraping the wall, and the baffle 8 gathers the material to the center of the kettle body 1 to achieve the effect of promoting the material to flow radially, and because the drum 3 is always in contact with the inner wall of the kettle body 1, it is equivalent to increasing the inner wall area of the kettle body 1, thereby improving the heat exchange rate between the reactants and the kettle body 1, which is more conducive to maintaining the reaction conditions and reducing the formation of by-products;

[0032] Even though the roller 3 is always in contact with the inner wall of the kettle body 1 during operation and continuously squeezes out and circulates the material near the inner wall of the kettle body 1, it is inevitable that the material will stick to the inner wall of the kettle body 1 after long-term use. At this time, it is necessary to stop the machine and clean the kettle body 1. Cleaning liquid is added to the kettle body 1, and the motor drives the rotating shaft 2 to rotate clockwise. At this time, the baffle 8 is subjected to the counterclockwise reaction force given by the cleaning liquid, so that the angle between the square rod 7 and the support rod 4 becomes smaller, and the slider 11 slides in the slide groove 13 toward the circular hole 12. The scraper 6 at the other end of the connecting rod 5 rotates toward the inner wall of the kettle body 1 until the scraper 6 contacts the inner wall of the kettle body 1 and the angle between the square rod 7 and the support rod 4 reaches the minimum. At this time, the motor continues to drive the rotating shaft 2 to rotate. The rotating shaft 2 drives the scraper 6 through the support rod 4, the connecting rod 5 and the square tube to scrape and clean the inner wall of the kettle body 1. At this time, the baffle 8 pushes the cleaning liquid toward the inner wall of the kettle body 1, so that the cleaning liquid forms an impact flow flowing outward, which is conducive to improving the scraping effect of the scraper 6.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Technical personnel familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and all of them should be covered by the protection scope of the present invention.

Claims

1. A petrochemical production process reactor, characterized in that: The invention comprises a columnar kettle body (1), wherein a rotating shaft (2) is coaxially provided in the kettle body (1), and a plurality of vertical rollers (3) are evenly distributed on the circumference of the inner cavity of the kettle body (1), and the rollers (3) are in contact with the inner wall of the kettle body (1), and the upper and lower ends of each roller (3) are connected to a support rod (4) through a bearing, and the other end of the support rod (4) is fixed to the rotating shaft (2); a material-dispensing device is provided between each roller (3) and the rotating shaft (2), and the material-dispensing device is free to rotate relative to the rotating shaft (2). A connecting rod (5) is provided between the device and the two supporting rods (4) on each roller (3); one end of the connecting rod (5) is hinged to the supporting rod (4); the middle part of the connecting rod (5) is slidably connected to the material-dispensing device; and a scraper (6) is fixed to the other end of the connecting rod (5); when the angle between the supporting rod (4) and the material-dispensing device increases, the distance between the scraper (6) and the inner wall of the kettle body (1) increases; when the angle between the supporting rod (4) and the material-dispensing device is minimum, the scraper (6) contacts the inner wall of the kettle body (1).

2. A petrochemical production process reactor according to claim 1, characterized in that: The material-dispensing device comprises two square rods (7) arranged one above the other, a plurality of vertical baffles (8) being fixed between the two square rods (7), the plurality of baffles (8) being parallel to each other, and the normal vectors of the baffles (8) not intersecting with the axis of the rotating shaft (2), two shaft sleeves (9) being mounted on the rotating shaft (2), and the two shaft sleeves (9) being located between two support rods (4) on the same roller (3), and the two square rods (7) on the same material-dispensing device being fixed to the two shaft sleeves (9) on the rotating shaft (2) respectively.

3. A petrochemical production process reactor according to claim 2, characterized in that: A cylindrical block (10) is fixed on each of the two supporting rods (4) connected to the roller (3), and a slider (11) is fixed on each of the upper and lower ends of the material-dispensing device. A circular hole (12) is opened at one end of the connecting rod (5), and a sliding groove (13) is opened in the middle of the connecting rod (5). The connecting rod (5) is hinged to the cylindrical block (10) through the circular hole (12), and the two sliders (11) on the material-dispensing device are respectively located in the sliding grooves (13) on the two connecting rods (5).

4. A petrochemical production process reactor according to claim 1, characterized in that: A through hole is formed at the center of the upper end of the kettle body (1), and the upper end of the rotating shaft (2) extends out of the kettle body (1) from the through hole. A liquid inlet (14) and a manhole (15) are provided on the outer side of the through hole. A liquid outlet (16) is provided at the lower end of the kettle body (1). A plurality of support seats (17) are fixed on the outer wall of the kettle body (1), and the plurality of support seats (17) are evenly distributed along the circumference of the kettle body (1).

5. A petrochemical production process reactor according to claim 3, characterized in that: The support rod (4) and the rotating shaft (2), the square rod (7) and the shaft sleeve (9), and the baffle (8) and the square rod (7) are all connected by bolts.

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