Automatic control equipment for preparing phosphorus pentafluoride

Abstract

The utility model discloses automatic control equipment for preparing phosphorus pentafluoride, and relates to the technical field of phosphorus pentafluoride preparation. The device comprises a reactor, three supporting legs are fixedly connected to the outer surface of the reactor, a refrigerator is fixedly connected to the outer surface of the reactor, a discharging pipe is fixedly connected to the top of the reactor, and two feeding boxes are fixedly connected to the top of the reactor. According to the device, the material control assembly is arranged, specifically, a motor II is started to drive a rotating shaft to rotate, so that a moving block can drive two rotating plates II to rotate, and the discharging speed of two feeding boxes into the reactor is adjusted, so that the device can add a chemical reagent according to the temperature change, and the reaction is carried out according to the expected direction and speed; the purity and quality of phosphorus pentafluoride are improved, meanwhile, safety accidents caused by sharp temperature rise during reagent reaction can be avoided, and the safety during preparation of phosphorus pentafluoride is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of phosphorus pentafluoride preparation, and in particular relates to an automatic control device for preparing phosphorus pentafluoride. Background Art

[0002] Phosphorus pentafluoride is a phosphorus-halide compound with an oxidation number of +5 and a three-center, four-electron bond. Phosphorus pentafluoride is primarily used as a polymerization catalyst. For example, in the synthesis of certain polymer materials, it can promote the polymerization of monomers, resulting in polymers with specific properties.

[0003] Traditional methods for preparing phosphorus pentafluoride rely primarily on two pathways: the phosphorus pentachloride method and the polyphosphoric acid method. These methods present significant technical challenges and safety risks in industrial applications.

[0004] First, the phosphorus pentachloride method involves a gas-solid phase reaction, which often suffers from incomplete reaction. The limited contact area between the gas and the solid leads to low reaction efficiency, which not only affects product yield but also increases energy consumption and material loss.

[0005] Secondly, the polyphosphoric acid method is difficult to implement efficiently on an industrial scale due to its cumbersome reaction steps and complex operation. This method usually involves multiple intermediate steps, each of which requires precise control of conditions such as temperature, pressure, and time, which places high demands on equipment and operators.

[0006] Crucially, both the phosphorus pentachloride and polyphosphoric acid methods are difficult to monitor and adjust in real time during actual operation. This can lead not only to incomplete reactions but also to excessive byproducts, compromising the purity and quality of the final product. Furthermore, the drastic temperature fluctuations that can accompany the reaction create potential safety risks. For example, runaway temperature control can lead to equipment damage or even dangerous accidents.

[0007] Therefore, existing phosphorus pentafluoride production methods cannot meet the efficiency, safety, and cost-effectiveness requirements of industrial production. To address these issues, the development of a simple, efficient, and precisely controlled automated phosphorus pentafluoride production equipment is particularly urgent. This new equipment would utilize an advanced control system to monitor and adjust reaction conditions in real time, ensuring complete reaction completion, minimizing byproduct formation, and improving phosphorus pentafluoride yield and quality. This would also reduce operational risks and enhance overall production safety and economic efficiency. Utility Model Content

[0008] The purpose of the utility model is to provide an automated control device for the preparation of phosphorus pentafluoride. By providing a material control component, the device can control the feeding speed, thereby solving the problem that the feeding speed of the existing phosphorus pentafluoride preparation cannot be adjusted according to the reaction conditions and temperature of the internal chemical reagents. This not only leads to incomplete reaction and affects the purity and quality of phosphorus pentafluoride, but also may cause the temperature of the reagents to rise sharply during the reaction, leading to safety accidents.

[0009] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0010] An automated control device for preparing phosphorus pentafluoride, comprising a reactor, wherein the outer surface of the reactor is fixedly connected to support legs, the number of the support legs being three, the outer surface of the reactor is fixedly connected to a refrigerator, the front of the top of the reactor is fixedly connected to a discharge pipe, the top of the reactor is fixedly connected to a feed box, the number of the feed boxes being two, a stirring assembly is provided inside the reactor, and a material control assembly is provided inside each of the two feed boxes, the two material control assemblies are symmetrically arranged with the reactor as the center, the parts contained in the two material control assemblies are the same, the material control assembly includes a rotating shaft, the outer surface of the rotating shaft ... The surface is rotatably connected to the inner wall of the feed box, the left side of the feed box is fixedly connected to motor 2, the right output end of motor 2 is fixedly connected to the left side of the rotating shaft, the outer surface of the rotating shaft is fixedly connected to bevel gear 1, the bottom of bevel gear 1 is meshed with bevel gear 2, and the inner wall of the feed box is fixedly connected to support frame 2. By setting up the material control component, the device can not only add chemical reagents according to temperature changes, ensure that the reaction proceeds in the expected direction and rate, and improve the purity and quality of phosphorus pentafluoride, but also avoid safety accidents caused by rapid temperature increase during reagent reaction, thereby improving the safety during the preparation of phosphorus pentafluoride.

[0011] Furthermore, a circular groove 1 is provided inside the second support frame, and a threaded rod is rotatably connected to the inner wall of the circular groove 1, and the top of the threaded rod is fixedly connected to the bottom of the second bevel gear, and a support block is fixedly connected to the inner wall of the feed box, and a groove is provided on the top of the support block, and the inner wall of the groove is rotatably connected to the outer surface of the threaded rod, and the inner wall of the support block is fixedly connected to a round rod. By setting up the support frame, the threaded rod can rotate more stably.

[0012] Furthermore, there are two round rods, and the outer surfaces of the two round rods are rotatably connected to a rotating plate 2. The sides of the two rotating plates 2 that are away from each other are in contact with the inner wall of the feed box. A sliding groove is provided on the top of the two rotating plates 2. The inner walls of the two sliding grooves are slidably connected to a slider. The tops of the two sliders are rotatably connected to a rotating rod. By setting the sliding groove, the slider can more conveniently drive the rotating plate 2 to rotate.

[0013] Furthermore, a moving block is rotatably connected to one side of the two rotating rods that are close to each other, and a circular groove 2 is opened inside the moving block. The inner wall of the circular groove 2 is threadedly connected to the outer surface of the threaded rod. By setting the threaded rod, the rotating plate can control the feeding speed more quickly and accurately.

[0014] Furthermore, the stirring assembly includes a stirring shaft, a motor 1 is fixedly connected to the top of the reactor, the bottom output end of the motor 1 is fixedly connected to the top of the stirring shaft, and a support frame 1 is fixedly connected to the inner wall of the reactor. The stirring assembly is provided to increase the collision chance between reactant molecules, accelerate the chemical reaction, and improve the reaction rate of the mixed solution of liquid anhydrous hydrogen fluoride and liquid chlorine with the phosphorus trichloride liquid.

[0015] Furthermore, a circular groove three is opened inside the support frame one, the inner wall of the circular groove three is rotatably connected to the outer surface of the stirring shaft, and a fixed block one is fixedly connected to the outer surface of the stirring shaft. There are two fixed blocks one. By setting the stirring shaft, the quality of the reagent reaction is improved.

[0016] Furthermore, the left and right sides of the two fixed blocks are fixedly connected to a rotating frame, the sides of the two rotating frames away from each other are fixedly connected to a scraper, the sides of the two scrapers away from each other are in contact with the inner wall of the reactor, the bottoms of the two rotating frames are in contact with the top of the support frame, and the inner walls of the two rotating frames are rotatably connected to a rotating plate. By providing the scraper, liquid of the chemical reagent is prevented from remaining inside the reactor.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model provides a material control component, specifically, turns on the second motor to drive the rotating shaft to rotate, so that the moving block can drive the two rotating plates to rotate, and adjusts the speed at which the two feed boxes discharge materials into the reactor. This enables the device to not only add chemical reagents according to temperature changes, ensuring that the reaction proceeds in the expected direction and rate, thereby improving the purity and quality of phosphorus pentafluoride, but also avoids safety accidents caused by a sharp increase in temperature during the reagent reaction, thereby improving the safety of phosphorus pentafluoride preparation.

[0019] 2. The utility model provides a stirring assembly, specifically, turns on a motor to drive the stirring shaft to rotate, so that one side of the scraper rotates on the inner wall of the reactor, thereby avoiding liquid chemical reagents from remaining inside the reactor, and increasing the collision opportunities between reactant molecules, accelerating the chemical reaction, and improving the reaction rate of the mixed solution of liquid anhydrous hydrogen fluoride and liquid chlorine with the phosphorus trichloride liquid.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-sectional structure of the reactor of the utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the utility model rotating frame;

[0025] Figure 4 This is a front cross-sectional structural diagram of the feed box of the utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the second rotating plate of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Reactor; 2. Support legs; 3. Discharge pipe; 4. Freezer; 5. Feed box; 6. Thermocouple temperature sensor; 11. Stirring assembly; 111. Stirring shaft; 112. Motor 1; 113. Fixed block 1; 114. Support frame 1; 115. Rotating frame; 116. Scraper; 117. Rotating plate 1; 22. Material control assembly; 221. Rotating shaft; 222. Motor 2; 223. Bevel gear 1; 224. Support frame 2; 225. Bevel gear 2; 226. Threaded rod; 227. Support block; 228. Round rod; 229. Rotating plate 2; 230. Moving block; 231. Rotating rod; 232. Slider. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the embodiments described are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the utility model.

[0030] See also Figure 1-5As shown, the utility model is an automatic control device for the preparation of phosphorus pentafluoride, comprising a reactor 1, a support leg 2 fixedly connected to the outer surface of the reactor 1, the number of the support legs 2 being three, a refrigerator 4 fixedly connected to the outer surface of the reactor 1, a discharge pipe 3 fixedly connected to the front of the top of the reactor 1, a feed box 5 fixedly connected to the top of the reactor 1, the number of the feed boxes 5 being two, a stirring component 11 being provided inside the reactor 1, and a material control component 22 being provided inside the two feed boxes 5, the two material control components 22 being based on the reactor 1. The two material control components 22 are arranged in a centrally symmetrical manner, and the parts contained in the two material control components 22 are the same. The material control component 22 includes a rotating shaft 221, the outer surface of the rotating shaft 221 is rotatably connected to the inner wall of the feed box 5, the left side of the feed box 5 is fixedly connected to a motor 222, the right output end of the motor 222 is fixedly connected to the left side of the rotating shaft 221, the outer surface of the rotating shaft 221 is fixedly connected to a bevel gear 1 223, the bottom of the bevel gear 1 223 is meshedly connected to a bevel gear 2 225, and the inner wall of the feed box 5 is fixedly connected to a support frame 2 224.

[0031] A circular groove 1 is provided inside the support frame 224, and a threaded rod 226 is rotatably connected to the inner wall of the circular groove 1. The top of the threaded rod 226 is fixedly connected to the bottom of the bevel gear 225. A support block 227 is fixedly connected to the inner wall of the feed box 5. A groove is provided on the top of the support block 227. The inner wall of the groove is rotatably connected to the outer surface of the threaded rod 226. The inner wall of the support block 227 is fixedly connected to a circular rod 228.

[0032] There are two round rods 228, and the outer surfaces of the two round rods 228 are rotatably connected to the rotating plate 229. The sides of the two rotating plates 229 that are away from each other are in contact with the inner wall of the feed box 5. A sliding groove is provided on the top of the two rotating plates 229. The inner walls of the two sliding grooves are slidably connected to the slider 232, and the tops of the two sliders 232 are rotatably connected to the rotating rod 231.

[0033] The two rotating rods 231 are rotatably connected to the side where the two rotating rods 231 are close to each other with a moving block 230. A circular groove 2 is opened inside the moving block 230, and the inner wall of the circular groove 2 is threadedly connected to the outer surface of the threaded rod 226. By setting the material control component 22, specifically turning on the motor 222 to drive the rotating shaft 221 to rotate, the moving block 230 can drive the two rotating plates 229 to rotate, and adjust the speed at which the two feed boxes 5 discharge the materials into the reactor 1. This enables the device to not only add chemical reagents according to temperature changes, ensure that the reaction proceeds in the expected direction and rate, and improve the purity and quality of phosphorus pentafluoride, but also avoid safety accidents caused by a sharp increase in temperature during the reagent reaction, thereby improving the safety during the preparation of phosphorus pentafluoride.

[0034] The stirring assembly 11 includes a stirring shaft 111, a motor 112 is fixedly connected to the top of the reactor 1, the bottom output end of the motor 112 is fixedly connected to the top of the stirring shaft 111, and a support frame 114 is fixedly connected to the inner wall of the reactor 1.

[0035] A circular groove three is formed inside the support frame 114 , and the inner wall of the circular groove three is rotatably connected to the outer surface of the stirring shaft 111 . The outer surface of the stirring shaft 111 is fixedly connected to a fixing block 113 , and there are two fixing blocks 113 .

[0036] The left and right sides of the two fixed blocks 113 are fixedly connected to a rotating frame 115, and the sides of the two rotating frames 115 away from each other are fixedly connected to a scraper 116. The sides of the two scrapers 116 away from each other are in contact with the inner wall of the reactor 1, and the bottoms of the two rotating frames 115 are in contact with the top of the support frame 114. The inner walls of the two rotating frames 115 are rotatably connected to a rotating plate 117. By providing a stirring assembly 11, specifically turning on the motor 112 to drive the stirring shaft 111 to rotate, one side of the scraper 116 rotates on the inner wall of the reactor 1, thereby avoiding the liquid of the chemical reagent from remaining inside the reactor 1, and at the same time increasing the collision chance between the reactant molecules, accelerating the chemical reaction, and improving the reaction rate of the mixed solution of liquid anhydrous hydrogen fluoride and liquid chlorine and the phosphorus trichloride liquid.

[0037] A specific application of this embodiment is as follows: first, a mixed solution of liquid anhydrous hydrogen fluoride and liquid chlorine and liquid phosphorus trichloride are respectively discharged into the reactor 1 through two feed boxes 5 for reaction. Then, motor 112 is turned on to drive the stirring shaft 111 to rotate. The rotation of the stirring shaft 111 also drives the two fixed blocks 113 to rotate. The rotation of the two fixed blocks 113 also drives the two rotating racks 115 to rotate. During the rotation of the rotating racks 115, one side of the scraper 116 rotates on the inner wall of the reactor 1, so that the liquid chemical reagent does not remain in the reactor 1. The rotation of the rotating racks 115 also drives the rotating plate 117 to rotate, increasing the collision opportunities between the reactant molecules, accelerating the chemical reaction, and increasing the reaction rate of the mixed solution of liquid anhydrous hydrogen fluoride and liquid chlorine with the phosphorus trichloride liquid. During the reaction, the liquid releases a large amount of heat. The thermocouple temperature sensor 6 at the bottom of the inner wall of the reactor 1 has its two ends exposed to the medium of the object to be measured. When there is a temperature difference between the two ends, a temperature gradient is formed at the connection, which causes the rearrangement of charges between the metals and leads to the existence of an electric field. The temperature is obtained according to the thermoelectric voltammetry law and the principle of thermoelectric effect. The ethylene glycol solution in the interlayer of the reactor 1 is adjusted by the refrigerator 4 so that the ethylene glycol solution can help maintain the stability of the reaction. When the temperature of the chemical reagent inside the reactor 1 is high, the motor 222 is turned on to drive the rotating shaft 221 to rotate. When the rotating shaft 221 rotates, it will drive the bevel gear 1 223 to rotate. When the bevel gear 1 223 rotates, it will drive the bevel gear 2 225 to rotate. When the bevel gear 225 rotates, it will drive the threaded rod 226 to rotate clockwise. When the threaded rod 226 rotates, it will drive the moving The block 230 moves downward, and while the moving block 230 moves downward, the two rotating plates 229 are driven to rotate through the rotating rod 231 and the slider 232, and the speed at which the two feed boxes 5 discharge into the reactor 1 is adjusted, so that the device can not only add chemical reagents according to temperature changes, ensure that the reaction proceeds in the expected direction and rate, and improve the purity and quality of phosphorus pentafluoride, but also avoid safety accidents caused by a sharp increase in temperature during the reaction of the reagents, thereby improving the safety during the preparation of phosphorus pentafluoride. The discharge pipe 3 is used to discharge the generated gas, and being arranged at the top can better discharge the gas.

[0038] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments do not describe all details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. This specification selects and describes these embodiments in detail to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automated control device for preparing phosphorus pentafluoride, comprising a reactor (1), wherein the outer surface of the reactor (1) is fixedly connected to support legs (2), the number of the support legs (2) being three, the outer surface of the reactor (1) is fixedly connected to a refrigerator (4), and the top front of the reactor (1) is fixedly connected to a discharge pipe (3), characterized in that: A feed box (5) is fixedly connected to the top of the reactor (1), and there are two feed boxes (5). A stirring assembly (11) is provided inside the reactor (1), and a material control assembly (22) is provided inside the two feed boxes (5); The two material control components (22) are symmetrically arranged with the reactor (1) as the center. The parts contained in the two material control components (22) are the same. The material control components (22) include a rotating shaft (221). The outer surface of the rotating shaft (221) is rotatably connected to the inner wall of the feed box (5). The left side of the feed box (5) is fixedly connected to the second motor (222). The right output end of the second motor (222) is fixedly connected to the left side of the rotating shaft (221). The outer surface of the rotating shaft (221) is fixedly connected to the first bevel gear (223). The bottom of the first bevel gear (223) is meshedly connected to the second bevel gear (225). The inner wall of the feed box (5) is fixedly connected to the second support frame (224). A circular groove 1 is provided inside the second support frame (224), and a threaded rod (226) is rotatably connected to the inner wall of the circular groove 1. The top of the threaded rod (226) is fixedly connected to the bottom of the second bevel gear (225). The inner wall of the feed box (5) is fixedly connected to a support block (227). A groove is provided on the top of the support block (227). The inner wall of the groove is rotatably connected to the outer surface of the threaded rod (226). The inner wall of the support block (227) is fixedly connected to a circular rod (228). There are two round rods (228), and the outer surfaces of the two round rods (228) are rotatably connected to the rotating plate 2 (229). The sides of the two rotating plates 2 (229) that are away from each other are in contact with the inner wall of the feed box (5). The tops of the two rotating plates 2 (229) are provided with a sliding groove, and the inner walls of the two sliding grooves are slidably connected to the slider (232). The tops of the two sliders (232) are rotatably connected to the rotating rod (231).

2. The automated control device for preparing phosphorus pentafluoride according to claim 1, characterized in that: The two rotating rods (231) are rotatably connected to a moving block (230) on one side close to each other. A second circular groove is provided inside the moving block (230). The inner wall of the second circular groove is threadedly connected to the outer surface of the threaded rod (226).

3. The automated control device for preparing phosphorus pentafluoride according to claim 1, characterized in that: The stirring assembly (11) includes a stirring shaft (111), a motor 1 (112) is fixedly connected to the top of the reactor (1), a bottom output end of the motor 1 (112) is fixedly connected to the top of the stirring shaft (111), and a support frame 1 (114) is fixedly connected to the inner wall of the reactor (1).

4. The automated control device for preparing phosphorus pentafluoride according to claim 3, characterized in that: A circular groove three is provided inside the support frame one (114), and the inner wall of the circular groove three is rotatably connected to the outer surface of the stirring shaft (111). The outer surface of the stirring shaft (111) is fixedly connected to a fixing block one (113), and the number of the fixing blocks one (113) is two.

5. The automated control device for preparing phosphorus pentafluoride according to claim 4, characterized in that: The left and right sides of the two fixed blocks (113) are both fixedly connected to a rotating frame (115), and the sides of the two rotating frames (115) that are away from each other are both fixedly connected to a scraper (116).

6. The automated control device for preparing phosphorus pentafluoride according to claim 5, characterized in that: The sides of the two scrapers (116) that are away from each other are in contact with the inner wall of the reactor (1), the bottoms of the two rotating frames (115) are in contact with the top of the support frame (114), and the inner walls of the two rotating frames (115) are rotatably connected to the rotating plate (117).

Images