Condensing device for phosphorus trichloride production

Abstract

The invention discloses a condensing device for phosphorus trichloride production, which comprises a source supply structure, a scraping device and a spray-assisted cleaning device, and the source supply structure can provide nitrogen and gaseous phosphorus trichloride; the scraping device is arranged at the left end of the top surface of the center of the source supply structure, and the left end of the scraping device can primarily remove phosphorus pentachloride generated in the right end; the spray-assisted cleaning device is arranged at the right end of the center top surface of the source supply structure, the moving end of the spray-assisted cleaning device is embedded into the right end of the scraping device, and the spray-assisted cleaning device can clean and collect phosphorus pentachloride in the right end of the scraping device in a centralized manner; the efficient cleaning of phosphorus pentachloride is realized through the cooperation of the scraping device and the spray-assisted cleaning device so as to improve the condensation quality of phosphorus trichloride, the potential safety hazard of contact with highly toxic and highly corrosive substances can be avoided without dismounting core components, and the inert environment is maintained through the matching sealing of the short pipe and the arc-shaped plate, the sealing of the rubber ring at the pipeline penetrating part and the dry nitrogen.

Description

Technical Field

[0001] This invention relates to the field of phosphorus trichloride condensation technology, specifically a condensation device used in the production of phosphorus trichloride. Background Technology

[0002] In the production of phosphorus trichloride, gaseous phosphorus trichloride needs to be cooled and liquefied by a condenser in order to achieve subsequent collection and processing; however, existing phosphorus trichloride condensers still have many technical pain points in practical applications, making it difficult to meet the requirements of safe, stable and high-quality production. 1. Phosphorus pentachloride solid particles easily form on the inner wall of the condenser tube, seriously affecting the condensation quality. When gaseous phosphorus trichloride is cooled and liquefied in the condenser tube, some of the phosphorus trichloride easily reacts with residual chlorine or oxygen in the air to form phosphorus pentachloride solid particles that adhere to the inner wall of the condenser tube. As production continues, these solid particles will gradually accumulate, which on the one hand reduces the effective flow space in the condenser tube, hinders the full heat exchange between gaseous phosphorus trichloride and the coolant, and leads to a decrease in condensation efficiency; on the other hand, the accumulated phosphorus pentachloride may mix into the liquid phosphorus trichloride product, causing a decrease in product purity and failing to meet the quality standards of industrial-grade phosphorus trichloride.

[0003] 2. Existing methods for cleaning phosphorus pentachloride are cumbersome and pose high safety risks. To remove phosphorus pentachloride from the inner wall of the condenser tube, traditional techniques often involve disassembling the condenser unit, requiring the disassembly of core components such as the condenser tube and connecting pipes for manual or chemical cleaning. Both phosphorus trichloride and phosphorus pentachloride are highly toxic and corrosive. During disassembly, workers are at risk of direct contact with these hazardous media, and leaks may occur due to seal failure, leading to personnel poisoning, equipment corrosion, and other safety accidents, posing a serious threat to the safety of operators and the production environment. Summary of the Invention

[0004] The purpose of this invention is to provide a condensation device for phosphorus trichloride production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a condensation device for phosphorus trichloride production, comprising: a source supply structure, a scraping device, and a spray-assisted cleaning device; the source supply structure is capable of providing nitrogen and gaseous phosphorus trichloride; the scraping device is disposed at the left end of the center top surface of the source supply structure, and the left end of the scraping device is capable of scraping away the phosphorus pentachloride generated at the right end; the spray-assisted cleaning device is disposed at the right end of the center top surface of the source supply structure, and the movable end of the spray-assisted cleaning device is embedded in the right end of the scraping device, and the spray-assisted cleaning device is capable of cleaning and collecting the phosphorus pentachloride in the right end of the scraping device.

[0006] Preferably, to provide nitrogen and gaseous phosphorus trichloride to the scraping device and the spraying cleaning device, the power supply structure includes: a support platform, a gas-liquid separator, a tripod, a groove, a phosphorus trichloride gas storage tank, a first pressure regulating valve, a nitrogen storage tank, a second pressure regulating valve, and a nitrogen dryer. The support platform supports the top connecting components; the gas-liquid separator is located at the left end of the top surface of the support platform; the tripod is located near the center of the top surface of the support platform, and a vertically penetrating groove is formed at one corner of the left end of the top surface of the tripod; the phosphorus trichloride gas storage tank is located on the top surface of the support platform. The center of the support platform is as follows: a first pressure regulating valve is located at the output end of the phosphorus trichloride gas storage tank, and the bottom end of the first pressure regulating valve is fixedly connected to the top surface of the support platform. The top surfaces of the phosphorus trichloride gas storage tank and the first pressure regulating valve are at a certain distance from the bottom surface of the top of the tripod. A nitrogen storage tank is located at the right end of the top surface of the support platform. A second pressure regulating valve is located at the output end of the nitrogen storage tank, and the bottom end of the second pressure regulating valve is fixedly connected to the top surface of the support platform. A nitrogen dryer is located at the output end of the second pressure regulating valve, and the bottom end of the nitrogen dryer is fixedly connected to the top surface of the support platform.

[0007] Preferably, the three-section electric push rod pushes the connecting plate upward, causing the arc plate connected to the fixing block and hinge to move upward. The arc plate forms a complete closed pipeline with the short pipe through the arc groove at the bottom of the short pipe, preventing the liquid phosphorus trichloride from reacting with the air.

[0008] Preferably, to convert phosphorus trichloride from a gaseous state to a liquid state, the scraping device includes: a first rectangular block, a first chamber, a semi-circular groove, a three-section electric push rod, a connecting plate, a fixing block, a hinge, an arc-shaped plate, an inclined trigger rod, a short pipe, an arc-shaped groove, a condenser pipe, a coolant storage tank, a first support rod, a reciprocating bend pipe, a three-to-one connector pipe, a first drive assembly, and a scraping ring. The first rectangular block is located at the top edge of the right end of the groove, and the bottom surface of the first rectangular block is connected and fixed to the top surface of the tripod. The first rectangular block has a first chamber inside, and the top surface of the first rectangular block has three equidistant, vertically connected semi-circular grooves, each of which extends into the first chamber. The three-section electric push rod... Located at the center of the bottom surface within the first chamber; a connecting plate is located at the pushing end of the three-section electric push rod; three fixing blocks are equidistantly positioned on the top surface of the connecting plate; three hinges are respectively located at the top right side of the outer wall of the three fixing blocks via concave posts at both ends; three arc-shaped plates are respectively located on the rotating posts of the three hinges, and the three arc-shaped plates can be rotated by the three hinges; a tilting trigger rod is located at the center of the left side of the inner wall of the first chamber, and the top edge of the right end of the tilting trigger rod contacts the left end of the bottom surface of the outer wall of the three arc-shaped plates; three short tubes are respectively embedded in the three semi-circular grooves, and the bottom of the outer wall of each of the three short tubes is formed by openings. The device has three through-hole arc-shaped grooves, each matching one of three arc-shaped plates. A three-section electric push rod can push the three arc-shaped plates upwards, allowing them to pass through the arc-shaped grooves and form complete short tubes with the three short tubes. Three condenser tubes are located at the right ends of the three short tubes, with their inner cavities extending into the inner cavities of the three short tubes. A coolant reservoir is fitted onto both ends of the outer walls of the three condenser tubes. Four first support rods are located on the four sides of the bottom of the coolant reservoir's outer wall, with their bottom ends connected and fixed to the top surface of a tripod. Three bends are located equidistantly at the left ends of the three short tubes. The inner cavity of each tube extends into the inner cavity of the three short tubes; the three-to-one connector tube is located at the bottom end of the three reciprocating bends, and the inner cavity of the three-to-one connector tube extends into the inner cavity of the three reciprocating bends. The left end of the three-to-one connector tube is connected and fixed to the input end of the gas-liquid separator; the first drive assembly is located on the left side of the outer wall of the top end of the reciprocating bends, and the three moving ends of the first drive assembly extend through the top outer wall of the three reciprocating bends to the top of the inner cavity of the condenser tube; there are three scraper rings, which are respectively located on the three moving ends of the first drive assembly. The three scraper rings are respectively embedded in the right end of the inner cavity of the three condenser tubes, and the three scraper rings can move left and right along the inner wall of the condenser tube.

[0009] Preferably, for scraping off phosphorus pentachloride, the first driving assembly includes: a first support plate, a crank, a first brake motor, a slider, a sliding groove connecting rod, a fixed plate, a long rod, and a first rubber ring. The first support plate is located at the front left corner of the top surface of the tripod; the crank is located at the top of the rear side of the outer wall of the first support plate via a first bearing; the first brake motor is located at the top of the front side of the outer wall of the first support plate, and the output end of the first brake motor is connected and fixed to the front left end of the outer wall of the crank, and the first brake motor can drive the crank to rotate; the slider is located at the rear right end of the outer wall of the crank via a second bearing; the sliding groove connecting rod is sleeved on the outer side of the slider. The slide block is positioned along the inner wall of the sliding groove connecting rod, and the slider can move in a limited manner along the inner wall of the sliding groove connecting rod. A fixing plate is located at the center of the left side of the outer wall of the sliding groove connecting rod. Three long rods are equidistantly positioned on the right side of the outer wall of the fixing plate, and the three long rods pass through the left side of the outer wall of the top of the three reciprocating bends and are embedded in the top of the inner cavity of the three condensing tubes. Three first rubber rings are located at the penetration points of the three reciprocating bends. The first brake motor rotates to drive the crank to move the slider, and the sliding groove connecting rod is limited to move left and right by the limitation of the three long rods, so that the three scraper rings move in a limited manner along the inner cavity of the condensing tubes.

[0010] Preferably, the nitrogen storage tank outputs compressed nitrogen, which, after the flow rate is regulated by the second pressure regulating valve, enters the nitrogen dryer to remove moisture. The dried nitrogen is then transported through a telescopic hose to three metal nitrogen hard pipes, and finally enters the inner cavity of the condenser tube to maintain the inert environment inside the pipe, while also assisting the subsequent flow of liquid phosphorus trichloride.

[0011] Preferably, for dispensing liquid phosphorus trichloride, the spray cleaning device includes: an L-shaped tube, a second rectangular block, a second chamber, a first circular groove, a second circular groove, a connecting pipe, a metal nitrogen rigid pipe, a second rubber ring, a fixing rod, a moving block, a concave limiting rod, a second support rod, a second drive assembly, and a telescopic hose. Three L-shaped tubes are equidistantly positioned at the right ends of the three condenser tubes, with the inner cavities of each L-shaped tube extending into the three condenser tubes. The second rectangular block is positioned at the top of the three L-shaped tubes, and a second chamber is formed within it. A first circular groove extending horizontally is formed at the center of the right side of the inner wall of the second rectangular block, and two second circular grooves extending vertically are also equidistantly positioned. The three second chambers extend into the inner cavities of the three L-shaped tubes. The connecting pipe is fitted into the first circular groove, and one end of the connecting pipe is connected and fixed to the output end of the first pressure regulating valve. Three metal nitrogen rigid pipes are respectively inserted through the bottom ends of the inner cavities of the three L-shaped tubes. The telescopic hose... Three support rods are provided, each located at the right end of one of the three metal nitrogen rigid tubes. One end of each of the three telescopic hoses is connected and fixed to the output end of the nitrogen dryer. Three second rubber rings are provided at the penetration points at the bottom ends of the three metal nitrogen rigid tubes. A fixing rod is provided at the bottom of the outer wall of the right end of the three metal nitrogen rigid tubes. Two moving blocks are provided at the center of the front and rear ends of the fixing rod. Two concave limiting rods are provided, each sleeved on the outer wall of the two moving blocks. The fixing rod can be limited to move along the inner wall of the two concave limiting rods through the two moving blocks, thereby limiting the movement of the three metal nitrogen rigid tubes at the bottom of the inner cavity of the three second support rods. Two second support rods are provided at the center of the bottom surface of the concave limiting rods, and the bottom ends of the two second support rods are connected and fixed to the top surface of the tripod. A second drive assembly is provided at the center of the bottom surface of the fixing rod. The second drive assembly can drive the fixing rod to limit the movement of the three metal nitrogen rigid tubes at the bottom of the inner cavity of the condenser tube.

[0012] Preferably, for cleaning up the centralized waste phosphorus pentachloride, the second drive assembly includes: a second support plate, a rectangular plate, a gear, a second brake motor, and a rack. The second support plate is located at the bottom right end between the two concave limiting rods, and the bottom end of the second support plate is connected and fixed to the top surface of the tripod. The rectangular plate is located at the top end of the second support plate. The gear is located at the center of the top surface of the rectangular plate via a third bearing. The second brake motor is located at the center of the bottom surface of the rectangular plate, and the output end of the second brake motor is connected and fixed to the center of the bottom surface of the gear. The rack is located at the center of the bottom surface of the fixing rod, and one end of the rack meshes with the gear. The rotation of the second brake motor can drive the gear to rotate, thereby driving the rack to drive the fixing rod to move in a limiting position, thus driving the three metal nitrogen hard tubes to move in a limiting position at the bottom of the three condenser tube cavities.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention addresses the problem of phosphorus pentachloride solid particles easily forming on the inner wall of the condenser tube during phosphorus trichloride condensation. It achieves efficient cleaning through the coordinated operation of a scraping device and an auxiliary spray cleaning device. In the scraping device, the first driving component drives the scraper ring to move repeatedly along the inner wall of the condenser tube, which can scrape off the attached phosphorus pentachloride multiple times. The nitrogen rigid pipe of the auxiliary spray cleaning device can, under the drive of the second driving component, progressively spray dry nitrogen along the bottom of the condenser tube, thoroughly blowing the scraped phosphorus pentachloride into the chamber for centralized collection. The dual cleaning mechanism significantly reduces phosphorus pentachloride residue and significantly improves the condensation quality of phosphorus trichloride.

[0014] 2. Compared to the traditional method of cleaning phosphorus pentachloride by disassembling the condenser, this invention can clean phosphorus trichloride without disassembling any core components after the phosphorus trichloride processing is stopped. The cleaning can be completed simply by mechanical scraping of the scraping device and nitrogen blowing of the spray cleaning device. This avoids the safety hazards caused by contact with highly toxic and corrosive phosphorus trichloride and phosphorus pentachloride during the disassembly process.

[0015] 3. The short pipe and the arc plate are precisely matched through the arc groove. When the electric push rod drives the arc plate to close, the short pipe can be completely sealed to prevent liquid phosphorus trichloride from contacting the air. The rubber ring at the pipe penetration can effectively block air from entering the inner cavity of the condenser tube, avoiding the reaction of phosphorus trichloride with moisture in the air to generate corrosive substances. At the same time, the dry nitrogen output from the nitrogen dryer not only assists in cleaning, but also maintains the inert environment inside the condenser tube, further reducing safety risks and ensuring the stable operation of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the power supply structure of the present invention; Figure 3 This is a schematic diagram of the position and structure of the scraping device of the present invention; Figure 4 This is an enlarged structural diagram of point A of the scraping device of the present invention; Figure 5 This is an exploded structural diagram of the short tube connecting component of the scraping device of the present invention; Figure 6 This is a schematic diagram of the internal structure of the first rectangular block of the scraping device of the present invention. Figure 7 This is an exploded structural diagram of the top connecting component of the three-section electric push rod of the scraping device of the present invention; Figure 8 This is a schematic diagram of the internal structure of the coolant storage tank of the scraping device of the present invention. Figure 9 This is an exploded structural diagram of the first drive component of the scraping device of the present invention; Figure 10 This is a schematic diagram of the long rod position structure of the scraping device of the present invention; Figure 11 This is an exploded structural diagram of the first rubber ring connecting component of the scraping device of the present invention; Figure 12 This is a schematic diagram of the structure of the spray-assisted cleaning device of the present invention; Figure 13 This is an enlarged structural diagram of section B of the spray-assisted cleaning device of the present invention; Figure 14 This is an exploded structural diagram of the second rubber ring connecting component of the spray-assisted cleaning device of the present invention; Figure 15 This is a schematic diagram of the cross-sectional structure of the second rectangular block of the spray-assisted cleaning device of the present invention; Figure 16 This is an exploded view of the fixing rod of the spray cleaning device of the present invention; Figure 17 This is an exploded structural diagram of the second drive component of the spray cleaning device of the present invention.

[0017] In the diagram: 1. Power supply structure; 2. Scraping device; 3. Spray cleaning device; 11. Support platform; 12. Gas-liquid separator; 13. Quadrupole; 14. Groove; 15. Phosphorus trichloride gas storage tank; 16. First pressure regulating valve; 17. Nitrogen storage tank; 18. Second pressure regulating valve; 19. Nitrogen dryer; 21. First rectangular block; 22. First chamber; 23. Semi-circular groove; 24. Three-section electric push rod; 25. Connecting plate; 26. Fixing block; 27. Hinge; 28. Arc plate; 29. ​​Inclined trigger rod; 210. Short pipe; 211. Arc groove; 212. Condenser pipe; 213. Coolant storage tank; 214. First support rod; 215. Back-and-forth bend pipe; 216. Three-to-one... 217. Connector pipe; 218. First support plate; 219. Crank; 220. First brake motor; 221. Slider; 222. Slide bar; 223. Slide bar connecting rod; 224. Fixing plate; 225. Long rod; 226. First rubber ring; 227. Scraper ring; 31. L-shaped pipe; 32. Second rectangular block; 33. Second chamber; 34. First circular groove; 35. Second circular groove; 36. Connecting pipe; 37. Metal nitrogen hard pipe; 38. Second rubber ring; 39. Fixing rod; 310. Moving block; 311. Concave limiting rod; 312. Second support rod; 313. Second support plate; 314. Rectangular plate; 315. Gear; 316. Second brake motor; 317. Rack; 318. Telescopic hose. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-17 This invention provides a condensation device solution for phosphorus trichloride production, comprising: a supply structure 1, a scraping device 2, and a spray-assisted cleaning device 3. The supply structure 1 provides nitrogen and gaseous phosphorus trichloride. The scraping device 2 is located at the left end of the center top surface of the supply structure 1, and the left end of the scraping device 2 can scrape off the phosphorus pentachloride generated at the right end. The first driving component of the scraping device 2 has a repetitive operation mode, which can repeatedly scrape off the phosphorus pentachloride, thereby reducing phosphorus pentachloride and improving the condensation quality of phosphorus trichloride. The spray-assisted cleaning device 3 is located at the right end of the center top surface of the supply structure 1, and the moving end of the spray-assisted cleaning device 3 is embedded in the right end of the scraping device 2. The spray-assisted cleaning device 3 can clean and collect the phosphorus pentachloride in the right end of the scraping device 2. The spray-assisted cleaning device 3 can cooperate with the scraping device 2 to significantly reduce the residue of phosphorus pentachloride and has a certain boosting effect on liquid phosphorus trichloride.

[0020] As a preferred option, further, such as Figure 2As shown, the power supply structure 1 includes: a support platform 11, a gas-liquid separator 12, a quadrupole 13, a groove 14, a phosphorus trichloride gas storage tank 15, a first pressure regulating valve 16, a nitrogen storage tank 17, a second pressure regulating valve 18, and a nitrogen dryer 19. The support platform 11 is used to support the top connecting component and serves as a necessary support base plate, ensuring stable support for the top connecting component. The gas-liquid separator 12 is located at the left end of the top surface of the support platform 11 and can separate the mixed phosphorus trichloride gas... The system efficiently separates the gas and liquid phases, enabling the separate collection of both. A quadrupole 13 is positioned near the center of the top surface of the support platform 11. A through-groove groove 14 is formed at one corner of the left end of the top surface of the quadrupole 13, providing a stable support base for its top connecting components and raising them to a certain height, thus better facilitating cooperation with other components within the power supply structure 1. A phosphorus trichloride gas storage tank 15 is positioned at the center of the top surface of the support platform 11 and is used for storing phosphorus trichloride gas. The gaseous phosphorus trichloride; a first pressure regulating valve 16 is located at the output end of the phosphorus trichloride gas storage tank 15, and the bottom end of the first pressure regulating valve 16 is connected and fixed to the top surface of the support platform 11. The top surfaces of the phosphorus trichloride gas storage tank 15 and the first pressure regulating valve 16 are at a certain distance from the bottom surface of the top of the tripod 13. The first pressure regulating valve 16 is used to regulate the flow rate of phosphorus trichloride in the phosphorus trichloride gas storage tank 15; a nitrogen storage tank 17 is located at the right end of the top surface of the support platform 11, and the nitrogen storage tank 17 stores compressed nitrogen. The second pressure regulating valve 18 is located at the output end of the nitrogen storage tank 17, and the bottom end of the second pressure regulating valve 18 is connected and fixed to the top surface of the support platform 11. The second pressure regulating valve 18 is used to regulate the flow rate of nitrogen in the nitrogen storage tank 17. The nitrogen dryer 19 is located at the output end of the second pressure regulating valve 18, and the bottom end of the nitrogen dryer 19 is connected and fixed to the top surface of the support platform 11. The function of the nitrogen dryer 19 is to remove moisture, liquid water and water vapor from the nitrogen and output dry nitrogen to meet the requirements of subsequent processes for nitrogen dryness.

[0021] As a preferred option, further, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10As shown, the scraping device 2 includes: a first rectangular block 21, a first chamber 22, a semi-circular groove 23, a three-section electric push rod 24, a connecting plate 25, a fixing block 26, a hinge 27, an arc-shaped plate 28, an inclined trigger rod 29, a short pipe 210, an arc-shaped groove 211, a condenser pipe 212, a coolant storage tank 213, a first support rod 214, a reciprocating bend pipe 215, a three-to-one connector pipe 216, a first drive assembly, and a scraper ring 225. The first rectangular block 21 is located at the top edge of the right end of the groove 14, and the bottom surface of the first rectangular block 21 is connected and fixed to the top surface of the tripod 13. The first rectangular block 21 has a first chamber 22 inside, which is used to collect and store waste phosphorus pentachloride. The top surface of the first rectangular block 21 has three equidistant and vertically penetrating sections. Three semi-circular grooves 23 extend into the first chamber 22, and the semi-circular grooves 23 are matched with the short tube 210 for better fit. A three-section electric push rod 24 is located at the center of the bottom surface of the first chamber 22, and the three-section electric push rod 24 has a larger stroke. A connecting plate 25 is located at the pushing end of the three-section electric push rod 24, which is used to support the top connecting component. There are three fixing blocks 26, which are equidistantly arranged on the top surface of the connecting plate 25. The three fixing blocks 26 provide attachment support points for the three hinges 27. There are three hinges 27, which are respectively set at the top right side of the outer wall of the three fixing blocks 26 through concave posts at both ends. The hinges 27 can realize the rotation and opening and closing of the fixing blocks 26 and the arc plate 28, while maintaining... To maintain connection stability, three arc-shaped plates 28 are respectively set on the rotating posts of three hinges 27. Each of the three arc-shaped plates 28 can rotate via the three hinges 27. The arc-shaped plates 28 are used to form a complete short tube 210 with the arc-shaped groove 211 to seal it, preventing contact with air and ensuring the flow of liquid phosphorus trichloride. The three arc-shaped plates 28 are tilted to better allow phosphorus pentachloride to fall to the bottom of the first chamber 22 and prevent phosphorus pentachloride residue from remaining in the three arc-shaped plates 28. A tilting trigger rod 29 is located at the center left side of the inner wall of the first chamber 22, and the top edge of the right end of the tilting trigger rod 29 contacts the left end of the bottom surface of the outer wall of the three arc-shaped plates 28. The tilting trigger rod 29 is used to contact the three arc-shaped plates 28, causing the three arc-shaped plates 28 to... 8. Inclined; There are three short tubes 210, which are embedded in three semi-circular grooves 23. The three short tubes 210 are made of Teflon material, which can stably resist the corrosion of liquid phosphorus trichloride and extend the service life of the equipment. The bottom of the outer wall of each of the three short tubes 210 is provided with an arc-shaped groove 211 that runs vertically through the bottom. The three arc-shaped grooves 211 are matched with three arc-shaped plates 28 respectively. The three-section electric push rod 24 can push the three arc-shaped plates 28 upward. All three arc-shaped plates 28 can be connected to the three short tubes 210 through the arc-shaped grooves 211 to form a complete short tube 210. There are three condenser tubes 212, which are respectively set at the right end of the three short tubes 210. The inner cavity of the three condenser tubes 212 is connected to the inner cavity of the three short tubes 210 respectively. The condenser tubes 212 are used for the chamber where phosphorus trichloride changes from gaseous to liquid state.A coolant reservoir 213 is fitted onto both ends of the outer wall of three condenser tubes 212, and is used to store coolant. Four first support rods 214 are respectively installed on the four sides of the bottom of the outer wall of the coolant reservoir 213, and the bottom ends of the four first support rods 214 are connected and fixed to the top surface of the tripod 13. The four first support rods 214 provide stable support for the coolant reservoir 213 and also increase the height of the coolant reservoir 213. This allows for better compatibility between the coolant storage tank 213 and other connecting components; three bends 215 are provided, equidistantly positioned at the left ends of the three short pipes 210, with the inner cavities of each bend 215 extending into the inner cavities of the three short pipes 210. The bends 215 are made of Teflon, providing stable resistance to corrosion from liquid phosphorus trichloride and extending equipment lifespan; a three-to-one connector pipe 216 is located at the bottom of the three bends 215, and the inner... The cavity is connected to the inner cavity of three bends 215. The left end of the three-to-one connector pipe 216 is connected and fixed to the input end of the gas-liquid separator 12. The three-to-one connector pipe 216 is used to combine three different pipeline ports into one port to realize the integrated transfer of fluid gas or liquid. The three-to-one connector pipe 216 is made of Teflon material, which can stably resist the corrosion of liquid phosphorus trichloride and extend the service life of the equipment. The first drive assembly is set on the left side of the outer wall of the top of the bend 215. The three moving ends of the first drive assembly pass through the top outer wall of the three bends 215 and extend to the top of the inner cavity of the condenser pipe 212. There are three scraper rings 225, which are respectively set on the three moving ends of the first drive assembly. The three scraper rings 225 are embedded in the right end of the inner cavity of the three condenser pipes 212, and the three scraper rings 225 can move left and right along the inner wall of the condenser pipe 212. The three scraper rings 225 are used to scrape off the phosphorus pentachloride from the inner wall of the three condenser pipes 212.

[0022] As a preferred option, further, such as Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the first drive assembly includes: a first support plate 217, a crank 218, a first brake motor 219, a slider 220, a sliding connecting rod 221, a fixing plate 222, a long rod 223, and a first rubber ring 224. The first support plate 217 is located at the front left corner of the top surface of the tripod 13 and is used to support the top connecting assembly. The crank 218 is located at the top of the rear side of the outer wall of the first support plate 217 via a first bearing. The first brake motor 219 is located on the first support plate 217. The top of the front side of the outer wall of crank 218 is connected and fixed to the front left end of the outer wall of crank 218. The first brake motor 219 can drive the crank 218 to rotate. The first brake motor 219 has a certain self-locking ability, which can ensure that its connecting components can be stably positioned when the first brake motor 219 is not operating. The slider 220 is set on the rear right end of the outer wall of crank 218 through the second bearing. The sliding groove connecting rod 221 is sleeved on the outer wall of slider 220, and the slider 210 can move along the inner wall of the sliding connecting rod 221 with a limited position; the fixing plate 222 is set at the center of the left side of the outer wall of the sliding connecting rod 221, and the fixing plate 222 is used to connect and fix the sliding connecting rod 221 and the long rod 223; there are three long rods 223, which are set at equal intervals on the right side of the outer wall of the fixing plate 222, and the three long rods 223 pass through the left side of the top outer wall of the three reciprocating bends 215, and are embedded in the top of the inner cavity of the three condenser tubes 212, and the long rods 223 are made of Teflon. It has a certain hardness; there are three first rubber rings 224, which are respectively set at the through-holes of the three reciprocating bends 215. The first rubber rings 224 are used to seal and prevent air from entering the condenser pipe 212; the first brake motor 219 rotates to drive the crank 218 to move the slider 220, and the sliding groove connecting rod 221 is limited to move left and right by the three long rods 223, so that the three long rods 223 are limited to move left and right, and the three scraper rings 225 are respectively limited to move along the inner cavity of the condenser pipe 212.

[0023] As a preferred option, further, such as Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16As shown, the auxiliary spray cleaning device 3 includes: an L-shaped tube 31, a second rectangular block 32, a second chamber 33, a first circular groove 34, a second circular groove 35, a connecting pipe 36, a metal nitrogen rigid pipe 37, a second rubber ring 38, a fixing rod 39, a moving block 310, a concave limiting rod 311, a second support rod 312, a second drive assembly, and a telescopic hose 318. There are three L-shaped tubes 31, equidistantly positioned at the right ends of three condenser pipes 212. The inner cavities of the three L-shaped tubes 31 extend into the three condenser pipes 212. The L-shaped tubes 31 are made of Teflon material, which can stably resist the corrosion of liquid phosphorus trichloride, extending the service life of the equipment. The second rectangular block 32 is located at the top of the three L-shaped tubes 31, and the second rectangular block 32 has a first circular groove 34, a second circular groove 35, and a second circular groove 36. The inner wall of the second rectangular block 32 has a first circular groove 34 extending horizontally through the center of the right side of the two chambers 33. The second rectangular block 32 has two equally spaced second circular grooves 35 extending vertically through the center of the right side of each chamber. The three second chambers 33 connect to the inner cavities of the three L-shaped tubes 31. The second rectangular block 32 is used to convert the ports of the three L-shaped tubes 31 into a single port. A connecting pipe 36 is fitted into the first circular groove 34, and one end of the connecting pipe 36 is connected and fixed to the output end of the first pressure regulating valve 16. The connecting pipe 36 is used to connect the first circular groove 34 and the first pressure regulating valve 16. Three metal nitrogen hard pipes 37 are respectively installed at the bottom of the inner cavities of the three L-shaped tubes 31. The metal nitrogen hard pipes 37 can stably resist the corrosion of liquid phosphorus trichloride and extend the... The service life is specified; three telescopic hoses 318 are respectively installed at the right end of the three metal nitrogen rigid pipes 37. One end of each of the three telescopic hoses 318 is connected and fixed to the output end of the nitrogen dryer 19. The three telescopic hoses 318 can extend or shorten with the three metal nitrogen rigid pipes 37 during movement, ensuring uninterrupted delivery; three second rubber rings 38 are respectively installed at the bottom penetration of the three metal nitrogen rigid pipes 37. The second rubber rings 38 are used to seal and prevent air from entering the condenser pipe 212; a fixing rod 39 is installed at the bottom of the outer wall of the right end of the three metal nitrogen rigid pipes 37. The fixing rod 39 is used to fix the three metal nitrogen rigid pipes 37; the moving block 3 There are two 10s, which are respectively set at the center of the front and rear ends of the fixed rod 39. The three moving blocks 310 are respectively matched with the inner cavity of the two concave limiting rods 311. There are two concave limiting rods, which are respectively sleeved on the outer wall of the two moving blocks 310. The fixed rod 39 can be limited to move along the inner wall of the two concave limiting rods 311 through the two moving blocks 310, so that the three metal nitrogen hard tubes 37 are respectively limited to move at the bottom of the inner cavity of the three second support rods 312. There are two second support rods 312, which are respectively set at the center of the bottom surface of the concave limiting rods 311, and the bottom end of the two second support rods 312 is connected and fixed to the top surface of the quadrupole 13. The two second support rods 312 are respectively used to support the two concave limiting rods 311.The second drive assembly is located at the center of the bottom surface of the fixed rod 39. The second drive assembly can drive the fixed rod 39 to move the three metal nitrogen rigid tubes 37 within the bottom of the condenser tube 212.

[0024] As a preferred option, further, such as Figure 13 , Figure 16 and Figure 17 As shown, the second drive assembly includes: a second support plate 313, a rectangular plate 314, a gear 315, a second brake motor 316, and a rack 317. The second support plate 313 is located at the bottom right end between two concave limiting rods 311, and the bottom end of the second support plate 313 is connected and fixed to the top surface of the tripod 13. The rectangular plate 314 is located at the top end of the second support plate 313 and serves to provide a support platform. The gear 315 is located at the center of the top surface of the rectangular plate 314 via a third bearing. The second brake motor 316 is located at the center of the bottom surface of the rectangular plate 314, and the second... The output end of the brake motor 316 is fixedly connected to the center of the bottom surface of the gear 315. The second brake motor 316 has a certain self-locking capability, ensuring that the gear 315 and its connecting components can be stably positioned when the second brake motor 316 is not operating. The rack 317 is set at the center of the bottom surface of the fixed rod 39, and one end of the rack 317 meshes with the gear 315. The rotation of the second brake motor 316 can drive the gear 315 to rotate, thereby driving the rack 317 to drive the fixed rod 39 to move in a limited position, thereby driving the three metal nitrogen hard tubes 37 to move in a limited position at the bottom of the inner cavity of the three condenser tubes 212 respectively.

[0025] The detailed connection method is a well-known technology in the field. The following mainly introduces the working principle and process. The specific operation is as follows: the coolant storage tank 213 is filled with coolant, and the three arc-shaped plates 28 are driven upward by the three-section electric push rod 24 to close the three short pipes 210 respectively, ensuring that the liquid phosphorus trichloride output pipeline path is closed. Gaseous phosphorus trichloride is output to the inner cavity of the three condenser pipes 212 through the phosphorus trichloride gas storage tank 15 and the first pressure regulating valve 16. The gaseous phosphorus trichloride is located in the three condenser pipes 212. The coolant in the coolant storage tank 213 cools the three condenser pipes 212 to the liquid temperature of phosphorus trichloride, so that it can flow with the nitrogen gas sprayed by the three metal nitrogen hard pipes 37 to the gas-liquid separator 12 to complete the liquid phosphorus trichloride processing. At the same time, during the process of phosphorus trichloride condensation from gaseous to liquid phosphorus trichloride, solid particles of phosphorus pentachloride will be generated on the inner wall of the three condenser pipes 212. The long-term accumulation of phosphorus pentachloride will affect the quality of phosphorus trichloride condensation. Compared with traditional disassembly and cleaning, the present invention can achieve the desired effect in phosphorus trichloride condensation. During the processing shutdown, the phosphorus pentachloride on the inner walls of the three condenser tubes 212 is cleaned without disassembly. The first brake motor 219 rotates, driving three scraper rings 225 to scrape the phosphorus pentachloride from the inner walls of the three condenser tubes 212, causing it to fall to the bottom of the inner cavity of the condenser tubes 212. The first drive assembly can operate repeatedly, and multiple scrapings of the phosphorus pentachloride from the inner walls of the three condenser tubes 212 result in a cleaner finish, reducing residue and improving the quality of phosphorus trichloride condensation. The three-section electric push rod 24 moves downwards, causing the three arc-shaped... When plate 28 contacts tilt trigger rod 29, the three arc-shaped plates 28 tilt via hinge 27, starting nitrogen dryer 19. The second brake motor 316 drives three metal nitrogen hard pipes 37 to the left to move and spray phosphorus pentachloride into the bottom of the three condenser pipes 212, which then falls into the bottom of the first chamber 22. The moving and spraying action, during the concentrated treatment of phosphorus pentachloride, can make the inner wall of the three condenser pipes 212 cleaner, greatly reducing the residue of phosphorus pentachloride and improving the condensation quality of phosphorus trichloride.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A condensation device for phosphorus trichloride production, comprising: The power supply structure (1) is capable of providing nitrogen and gaseous phosphorus trichloride; The scraping device (2) is located at the left end of the center top surface of the power supply structure (1), and the left end of the scraping device (2) can scrape off the phosphorus pentachloride generated at the right end. The spraying cleaning device (3) is located at the right end of the center top surface of the power supply structure (1), and the moving end of the spraying cleaning device (3) is embedded in the right end of the scraping device (2). The spraying cleaning device (3) can clean and collect phosphorus pentachloride in the right end of the scraping device (2).

2. A condensation device for phosphorus trichloride production according to claim 1, characterized in that, The power supply structure (1) includes: Support platform (11) for supporting the top connecting component; A gas-liquid separator (12) is disposed at the left end of the top surface of the support platform (11); The quadrupole (13) is located at the center of the support platform (11) near the top surface, and a groove (14) is provided at the left corner of the top surface of the quadrupole (13) that runs vertically through it. A phosphorus trichloride gas storage tank (15) is located at the center of the top surface of the support platform (11); The first pressure regulating valve (16) is located at the output end of the phosphorus trichloride gas storage tank (15), and the bottom end of the first pressure regulating valve (16) is connected and fixed to the top surface of the support platform (11). The top surface of the phosphorus trichloride gas storage tank (15) and the first pressure regulating valve (16) are at a certain distance from the bottom surface of the top of the tripod (13). A nitrogen storage tank (17) is located at the right end of the top surface of the support platform (11); The second pressure regulating valve (18) is located at the output end of the nitrogen storage tank (17), and the bottom end of the second pressure regulating valve (18) is connected and fixed to the top surface of the support platform (11). A nitrogen dryer (19) is located at the output end of the second pressure regulating valve (18), and the bottom end of the nitrogen dryer (19) is connected and fixed to the top surface of the support platform (11).

3. A condensation device for phosphorus trichloride production according to claim 2, characterized in that, The scraping device (2) includes: The first rectangular block (21) is located at the top edge of the right end of the groove (14), and the bottom surface of the first rectangular block (21) is connected and fixed to the top surface of the tripod (13). The first rectangular block (21) has a first chamber (22) inside, and the top surface of the first rectangular block (21) has three equidistant and vertically connected semi-circular grooves (23), and the three semi-circular grooves (23) are respectively connected to the first chamber (22). A three-section electric actuator (24) is disposed at the center of the bottom surface inside the first chamber (22); A connecting plate (25) is disposed at the pushing end of the three-section electric push rod (24); There are three fixing blocks (26), which are equidistantly arranged on the top surface of the connecting plate (25); Three hinges (27) are respectively set at the top right side of the outer wall of the three fixing blocks (26) through concave posts at both ends; There are three arc-shaped plates (28), which are respectively set on the rotating posts of the three hinges (27). The three arc-shaped plates (28) can be rotated by the three hinges (27); The tilt trigger rod (29) is located at the center of the left side of the inner wall of the first chamber (22), and the top edge of the right end of the tilt trigger rod (29) is in contact with the left end of the bottom surface of the outer wall of the three arc plates (28); There are three short tubes (210), which are embedded in the three semi-circular grooves (23). The bottom of the outer wall of each of the three short tubes (210) is provided with an arc groove (211) that runs vertically through the bottom. The three arc grooves (211) are matched with three arc plates (28). The three-section electric push rod (24) can push the three arc plates (28) upward so that they can form a complete short tube (210) with the three short tubes (210) through the arc grooves (211). There are three condenser tubes (212), which are respectively located at the right end of the three short tubes (210), and the inner cavity of the three condenser tubes (212) is respectively connected to the inner cavity of the three short tubes (210); Coolant storage tank (213), sleeved at both ends of the outer wall of the three condenser tubes (212); The first support rod (214) consists of four rods, which are respectively set on the four sides of the bottom of the outer wall of the coolant storage tank (213), and the bottom ends of the four first support rods (214) are connected and fixed to the top surface of the tripod (13); There are three reciprocating bends (215), which are equidistantly located at the left ends of the three short pipes (210), and the inner cavities of the three reciprocating bends (215) are respectively connected to the inner cavities of the three short pipes (210). The three-to-one connector tube (216) is located at the bottom of the three reciprocating bends (215), and the inner cavity of the three-to-one connector tube (216) is connected to the inner cavity of the three reciprocating bends (215). The left end of the three-to-one connector tube (216) is connected and fixed to the input end of the gas-liquid separator (12).

4. A condensation device for phosphorus trichloride production according to claim 3, characterized in that, The three-section electric push rod (24) pushes the connecting plate (25) upward, causing the arc plate (28) connected to the fixing block (26) and the hinge (27) to move upward. The arc plate (28) forms a complete closed pipeline with the short pipe (210) through the arc groove (211) at the bottom of the short pipe (210) to prevent the liquid phosphorus trichloride from reacting with the air.

5. A condensation device for phosphorus trichloride production according to claim 4, characterized in that, The scraping device (2) further includes: The first driving component is located on the left side of the outer wall of the top of the reciprocating bend (215). The three moving ends of the first driving component extend through the top outer wall of the three reciprocating bends (215) to the top of the inner cavity of the condenser (212). There are three scraper rings (225), which are respectively set at the three moving ends of the first drive component. The three scraper rings (225) are respectively embedded in the right end of the inner cavity of the three condenser tubes (212), and the three scraper rings (225) can move left and right along the inner wall of the condenser tube (212).

6. A condensation device for phosphorus trichloride production according to claim 5, characterized in that, The first driving component includes: The first support plate (217) is located at the front left corner of the top surface of the quadrupole (13); The crank (218) is mounted on the top of the rear side of the outer wall of the first support plate (217) via a first bearing; The first brake motor (219) is located at the top of the front side of the outer wall of the first support plate (217), and the output end of the first brake motor (219) is connected and fixed to the front left end of the outer wall of the crank (218). The first brake motor (219) can drive the crank (218) to rotate. The slider (220) is disposed on the rear right end of the outer wall of the crank (218) via a second bearing; The sliding connecting rod (221) is sleeved on the outer wall of the slider (220), and the slider (210) can move along the inner wall of the sliding connecting rod (221) in a limited manner; A fixing plate (222) is disposed at the center of the left side of the outer wall of the sliding connecting rod (221); Three long rods (223) are set at equal intervals on the right side of the outer wall of the fixed plate (222), and the three long rods (223) pass through the left side of the top outer wall of the three back-and-forth bends (215) and are embedded in the top of the inner cavity of the three condenser tubes (212). The first rubber ring (224) has three parts, which are respectively set at the through-holes of the three reciprocating bends (215); the first brake motor (219) rotates to drive the crank (218) to move the slider (220), and the sliding groove connecting rod (221) is limited to move left and right by the three long rods (223), so that the three long rods (223) are limited to move left and right, and the three scraper rings (225) are respectively limited to move along the inner cavity of the condenser tube (212).

7. A condensation device for phosphorus trichloride production according to claim 6, characterized in that, The spray cleaning device (3) includes: There are three L-shaped tubes (31), which are equidistantly arranged at the right ends of the three condenser tubes (212), and the inner cavities of the three L-shaped tubes (31) are respectively connected to the three condenser tubes (212); The second rectangular block (32) is disposed at the top of the three L-shaped tubes (31). The second rectangular block (32) has a second chamber (33) inside. The center of the right side of the inner wall of the second rectangular block (32) has a first circular groove (34) that runs through from left to right. The second rectangular block (32) has a second circular groove (35) that runs through from top to bottom at equal intervals. The three second chambers (33) respectively run through the inner cavity of the three L-shaped tubes (31). A connecting pipe (36) is fitted into the first circular groove (34), and one end of the connecting pipe (36) is connected and fixed to the output end of the first pressure regulating valve (16); Three metal nitrogen hard tubes (37) are respectively installed through the bottom end of the inner cavity of the three L-shaped tubes (31); Three flexible hoses (318) are respectively installed at the right end of the three metal nitrogen hard tubes (37), and one end of the three flexible hoses (318) is connected and fixed to the output end of the nitrogen dryer (19). The second rubber ring (38) consists of three rings, which are respectively set at the penetration points at the bottom ends of the three metal nitrogen hard tubes (37); A fixing rod (39) is provided at the bottom of the outer wall of the right end of the three metal nitrogen hard tubes (37); There are two movable blocks (310), which are respectively set at the center of the front and rear ends of the fixed rod (39); Two concave limiting rods (311) are respectively sleeved on the outer walls of the two moving blocks (310). The fixed rod (39) can be limited to move along the inner walls of the two concave limiting rods (311) through the two moving blocks (310), so that the three metal nitrogen hard tubes (37) are limited to move at the bottom of the inner cavity of the three second support rods (312); There are two second support rods (312), which are respectively set at the center of the bottom surface of the concave limiting rod (311), and the bottom ends of the two second support rods (312) are connected and fixed to the top surface of the tripod (13); The second driving component is located at the center of the bottom surface of the fixed rod (39). The second driving component can drive the fixed rod (39) to make the three metal nitrogen hard tubes (37) move at the bottom of the inner cavity of the condenser tube (212).

8. A condensation device for phosphorus trichloride production according to claim 7, characterized in that, The nitrogen storage tank (17) outputs compressed nitrogen. After the flow rate is adjusted by the second pressure regulating valve (18), it enters the nitrogen dryer (19) to remove moisture. The dried nitrogen is then transported through the telescopic hose (318) to the three metal nitrogen hard pipes (37), and finally enters the inner cavity of the condenser (212) to maintain the inert environment inside the pipe and assist the subsequent flow of liquid phosphorus trichloride.

9. A condensation device for phosphorus trichloride production according to claim 8, characterized in that, The second driving component includes: The second support plate (313) is located at the bottom right end between the two concave limiting rods (311), and the bottom end of the second support plate (313) is connected and fixed to the top surface of the tripod (13). A rectangular plate (314) is disposed at the top of the second support plate (313); The gear (315) is disposed at the center of the top surface of the rectangular plate (314) via a third bearing; The second brake motor (316) is located at the center of the bottom surface of the rectangular plate (314), and the output end of the second brake motor (316) is connected and fixed to the center of the bottom surface of the gear (315). A rack (317) is disposed at the center of the bottom surface of the fixed rod (39), and one end of the rack (317) meshes with the gear (315).

10. A condensation device for phosphorus trichloride production according to claim 9, characterized in that, The rotation of the second brake motor (316) can drive the gear (315) to rotate, thereby driving the rack (317) to drive the fixed rod (39) to move in a limited position, thereby driving the three metal nitrogen hard tubes (37) to move in a limited position at the bottom of the inner cavity of the three condenser tubes (212).

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