A gas recovery device and its usage method for the production of pyridine hydrogen fluoride

Abstract

This invention discloses a gas recovery device and method for producing pyridine fluoride, relating to the field of pyridine fluoride production technology. It includes a gas recovery mechanism and an electrically operated telescopic rod installed inside the gas recovery mechanism. A reaction mechanism is located at the bottom of the gas recovery mechanism, and a drain valve is fixedly installed on one side of the bottom of the reaction mechanism. The gas recovery mechanism includes a recovery chamber, with an exhaust port on one side of the front of the recovery chamber. A first recovery pipe is fixedly installed on the side of the recovery chamber near the exhaust port. The electrically operated telescopic rod is fixedly installed inside the recovery chamber, and a compression piston is fixedly connected to its output end. The recovery chamber recovers and reuses excess hydrogen fluoride gas. The electrically operated telescopic rod allows the hydrogen fluoride gas to enter the recovery bend through the exhaust port and compress the second sealing plate, discharging it into the third inlet pipe, thereby carrying out a secondary reaction of the excess hydrogen fluoride.

Description

Technical Field

[0001] This invention relates to the field of pyridine fluoride production technology, specifically to a gas recovery device and its usage method for pyridine fluoride production. Background Technology

[0002] In the manufacturing process of organofluorine chemicals, some fluorine-containing acyl fluoride compounds are often produced as intermediates, such as pyridine hydrogen fluoride. Pyridine hydrogen fluoride can be used as an intermediate in laboratory research and development processes and chemical and pharmaceutical synthesis processes. Pyridine hydrogen fluoride is a chemical substance.

[0003] Publication No. CN 220759243 U discloses a production apparatus for pyridine hydrogen fluoride. The apparatus involves opening a first solenoid valve on a first connecting pipe, allowing hydrogen fluoride gas from a hydrogen fluoride cylinder to be injected through the first connecting pipe, a hollow rotating rod, and a hollow rod into multiple hollow stirring rods. The gas is then discharged through multiple through-holes, allowing the hydrogen fluoride gas to react with liquid pyridine to produce pyridine hydrogen fluoride. The output shaft of a motor drives a driving gear, a driven gear, a hollow rotating rod, a limiting block, another hollow rod, and multiple hollow stirring rods to agitate the mixture. The rotation of the multiple hollow stirring rods ensures that the hydrogen fluoride gas reacts with the liquid pyridine. Sufficient contact ensures a complete reaction. As the hollow rod rotates, it engages with a reciprocating screw, causing the hollow rod and hollow stirring rod to move up and down (during this process, the hollow rotating rod and limiting block slide up and down on the hollow rod). The simultaneous rotation and movement of multiple hollow stirring rods ensures a complete reaction between the hydrogen fluoride gas and the pyridine liquid, resulting in a high-purity hydrogen fluoride-pyridine mixture. Excess hydrogen fluoride gas is injected into the water tank through an exhaust pipe. Hydrogen fluoride gas is highly soluble in water, preventing leakage. However, the above patent still has the following problems in practical use:

[0004] Although the hydrogen fluoride pyridine production unit can absorb excess unreacted hydrogen fluoride gas through the exhaust pipe, it cannot reuse the excess hydrogen fluoride gas, resulting in a waste of hydrogen fluoride raw materials. This is not conducive to saving production costs of hydrogen fluoride pyridine. At the same time, because the excess hydrogen fluoride gas cannot react with the pyridine raw materials, the ratio of hydrogen fluoride to pyridine is deviated, thus affecting the concentration of hydrogen fluoride pyridine.

[0005] A gas recovery device and its usage method for the production of pyridine hydrogen fluoride are proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a gas recovery device and method for producing pyridine fluoride, in order to solve the problem that although the pyridine fluoride production device mentioned in the background art can absorb excess unreacted hydrogen fluoride gas through the exhaust pipe, it cannot reuse the excess hydrogen fluoride gas, resulting in waste of hydrogen fluoride raw materials and hindering cost savings in pyridine fluoride production. Furthermore, because the excess hydrogen fluoride gas cannot react with the pyridine raw materials, the ratio of hydrogen fluoride to pyridine deviates, thus affecting the concentration of pyridine fluoride.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a gas recovery device and method for producing pyridine hydrogen fluoride, comprising a gas recovery mechanism and an electric telescopic rod installed inside the gas recovery mechanism;

[0008] The gas recovery mechanism is equipped with a reaction mechanism at its bottom, and a drain valve is fixedly installed on one side of the bottom of the reaction mechanism.

[0009] Also includes:

[0010] The gas recovery mechanism includes a recovery chamber, an exhaust port is provided on one side of the front of the recovery chamber, and a first recovery pipe is fixedly installed on the side of the recovery chamber near the exhaust port.

[0011] The electric telescopic rod is fixedly installed inside one side of the recycling bin, and a compression piston is fixedly connected to the output end of the electric telescopic rod.

[0012] The first air inlet pipe is fixedly installed on one side of the inside of the recycling bin, and the first air inlet pipe is fixedly connected to the first recycling pipe.

[0013] Preferably, the recovery chamber is symmetrically equipped with first sealing springs on the side near the first air inlet pipe, the end of the first sealing spring is fixedly connected to a first spring connecting block, the outer side of the two first spring connecting blocks is fixedly installed with a first sealing plate, the first sealing plate is fitted and connected to the end of the first air inlet pipe, and the bottom of the recovery chamber is fixedly installed with a first support frame.

[0014] By adopting the above technical solution, the gas recovery mechanism can not only recover and reuse excess hydrogen fluoride gas using the recovery chamber, but also recover excess hydrogen fluoride gas into the recovery chamber using the first recovery pipe and the first air inlet pipe. This causes the gas to squeeze the first spring connecting block and separate from the first air inlet pipe. When the recovery chamber is full of gas, the squeezing piston will push the electric telescopic rod to retract, thereby storing excess hydrogen fluoride gas.

[0015] Preferably, a recycling bend is fixedly installed on the outer side of the recycling bin near the exhaust port. An installation groove is provided at the end of the recycling bend. A second sealing spring is fixedly installed on the inner side of the installation groove. A second spring connecting piece is fixedly connected to the end of the second sealing spring. A second sealing plate is fixedly installed on the outer side of the second spring connecting piece. The second sealing plate is in close contact with the end of the recycling bend.

[0016] By adopting the above technical solution, the electric telescopic rod drives the extrusion piston to move inside the recovery chamber. Under the elastic force of the first sealing spring, the first spring connecting block is brought into contact with the first air inlet pipe, allowing hydrogen fluoride gas to enter the recovery bend through the exhaust port and squeeze the second sealing plate into the third air inlet pipe, thereby carrying out a secondary reaction of excess hydrogen fluoride until no excess hydrogen fluoride gas is generated. This enables the recovery and utilization of excess hydrogen fluoride gas, and at the same time, it can accurately control the ratio of hydrogen fluoride gas to pyridine raw material, thereby controlling the concentration of hydrogen fluoride pyridine.

[0017] Preferably, the reaction mechanism includes a reaction chamber, a rotating sealing plate is rotatably connected to the bottom inner side of the reaction chamber, a flip motor is fixedly installed at the center of the bottom inner side of the reaction chamber, a first bevel gear transmission assembly is fixedly connected to the output end of the flip motor, a second air inlet pipe is rotatably connected inside the first bevel gear transmission assembly, an air outlet pipe is fixedly installed around the first bevel gear transmission assembly, and a plurality of exhaust holes are opened at the top of the air outlet pipe.

[0018] By adopting the above technical solution, the reaction mechanism can not only use the flip motor to drive the first bevel gear transmission assembly to rotate, which in turn drives the second air inlet pipe to rotate, thus making the outlet pipe at the top of the second air inlet pipe face upwards, facilitating the entry of hydrogen fluoride gas into the interior of the pyridine raw material for a full reaction, but also control the rotation angle of the second air inlet pipe to control the contact area between the exhaust port and the rotating sealing plate, thereby controlling the amount of hydrogen fluoride gas discharged and ensuring that the hydrogen fluoride gas can fully react with the pyridine raw material.

[0019] Preferably, a first rotating bracket is fixedly installed on the top of the reaction chamber, a first rotating motor is fixedly installed on one side of the first rotating bracket, a first rotating worm is fixedly connected to the output end of the first rotating motor, and a first rotating worm wheel is meshed with one side of the first rotating worm.

[0020] By adopting the above technical solution, the first rotating motor drives the first rotating worm to rotate. Utilizing the meshing connection between the first rotating worm and the first rotating worm wheel, the first rotating worm wheel drives the second rotating sleeve to rotate, thereby achieving horizontal rotation of the gas outlet pipe, stirring rotating rod, and spiral stirring plate. This enables thorough stirring of the pyridine raw material and hydrogen fluoride gas, improving the reaction efficiency of the pyridine raw material and hydrogen fluoride gas.

[0021] Preferably, a second rotating bracket is fixedly installed on the top of the first rotating worm gear, a second rotating motor is fixedly installed on one side of the second rotating bracket, a second rotating worm is fixedly connected to the output end of the second rotating motor, a second rotating worm is meshed with one side of the second rotating worm, and a third air intake pipe is rotatably connected inside the second rotating worm, the third air intake pipe being fixedly connected to the second air intake pipe.

[0022] By adopting the above technical solution, the second rotating motor drives the second rotating worm to rotate, and the meshing connection between the second rotating worm and the second rotating worm wheel is utilized to drive the first rotating sleeve and the second bevel gear transmission assembly to rotate. The second bevel gear transmission assembly then drives the stirring rotating rod and the spiral stirring plate to rotate, which can further improve the reaction efficiency of pyridine raw material and hydrogen fluoride gas.

[0023] Preferably, a first rotating sleeve is fixedly installed at the bottom of the second rotating worm gear, and a plurality of second bevel gear transmission assemblies are provided in the middle of the first rotating sleeve. There are two second bevel gear transmission assemblies, and stirring rotating rods are fixedly connected around the two second bevel gear transmission assemblies. Spiral stirring plates are symmetrically installed at the top and bottom of the stirring rotating rods, and a plurality of venting holes are opened inside the spiral stirring plates.

[0024] By adopting the above technical solution, the stirring rod and the spiral stirring plate can be driven to rotate vertically by the second bevel gear transmission assembly, which can further enable the pyridine raw material to react with hydrogen fluoride gas and improve the reaction efficiency.

[0025] Preferably, a second rotating sleeve is fixedly connected to the bottom of the first rotating worm gear, the second rotating sleeve is fixedly installed on the top of the rotating sealing plate, the second rotating sleeve is rotatably connected to the gas outlet pipe and the stirring rotating rod respectively, the drain valve is fixedly installed on the bottom side of the reaction chamber, a hydrogen fluoride cylinder is fixedly installed on the top side of the reaction chamber, a gas pump is fixedly installed on the top of the reaction chamber, a fourth gas inlet pipe is fixedly connected to the output end of the gas pump, a connecting joint is fixedly connected to the end of the fourth gas inlet pipe, the connecting joint is fixedly connected to the recovery bend pipe and the third gas inlet pipe respectively, and a gas plug is provided on the top of the hydrogen fluoride cylinder.

[0026] By adopting the above technical solution, hydrogen fluoride gas can be pumped into the interior of the outlet pipe through the third and second inlet pipes using a gas pump. By pumping hydrogen fluoride gas into the bottom of the reaction chamber, the reaction efficiency of pyridine raw material and hydrogen fluoride gas can be improved. When hydrogen fluoride gas passes through the connecting joint, since the second sealing plate is in contact with the recovery bend, hydrogen fluoride gas will not flow into the interior of the recovery bend.

[0027] Preferably, a second support frame is symmetrically installed on the side of the reaction chamber away from the hydrogen fluoride cylinder. A pyridine raw material tank is fixedly installed on the top of the second support frame. A feed plug is provided on the top of the pyridine raw material tank. A scale is fixedly installed on the front of the pyridine raw material tank. A feed pump is fixedly installed on the bottom of the pyridine raw material tank. A feed pipe is fixedly connected to the output end of the feed pump. The feed pipe is fixedly connected to the reaction chamber.

[0028] By adopting the above technical solution, the pyridine raw material tank can be stably supported by the second support frame, the amount of raw material inside the pyridine raw material tank can be observed by a ruler, and the raw material can be quantitatively added by a feeding pump.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: This gas recovery device and method for producing pyridine with hydrogen fluoride utilizes a recovery chamber to recover and reuse excess hydrogen fluoride gas. An electric telescopic rod allows the hydrogen fluoride gas to enter the recovery bend through the exhaust port, and then squeezes the second sealing plate to discharge it into the third inlet pipe, thereby carrying out a secondary reaction of the excess hydrogen fluoride. A tilting motor causes the exhaust pipe at the top of the second inlet pipe to face upwards, facilitating the entry of hydrogen fluoride gas into the interior of the pyridine raw material for a thorough reaction. By controlling the rotation angle of the second inlet pipe, the contact area between the exhaust port and the rotating sealing plate can be controlled, thereby controlling the amount of hydrogen fluoride gas discharged. The specific details are as follows:

[0030] 1. By setting up a gas recovery mechanism, excess hydrogen fluoride gas can be recovered and reused using the recovery chamber. The excess hydrogen fluoride gas is recovered into the recovery chamber using the first recovery pipe and the first inlet pipe. The gas squeezes the first spring connecting block and separates from the first inlet pipe. When the recovery chamber is full of gas, the squeezing piston pushes the electric telescopic rod to retract, realizing the storage of excess hydrogen fluoride gas. At the same time, the electric telescopic rod drives the squeezing piston to move inside the recovery chamber. Under the elastic force of the first sealing spring, the first spring connecting block is made to fit with the first inlet pipe, allowing the hydrogen fluoride gas to enter the recovery bend through the exhaust port and squeeze the second sealing plate to be discharged into the third inlet pipe, thereby carrying out a secondary reaction of excess hydrogen fluoride until no excess hydrogen fluoride gas is generated. This enables the recovery and reuse of excess hydrogen fluoride gas. At the same time, it can accurately control the ratio of hydrogen fluoride gas to pyridine raw material, thereby controlling the concentration of hydrogen fluoride pyridine.

[0031] 2. By setting up a reaction mechanism, the first bevel gear transmission assembly can be rotated by a reversing motor, which in turn drives the second inlet pipe to rotate. This causes the outlet pipe at the top of the second inlet pipe to face upwards, facilitating the entry of hydrogen fluoride gas into the pyridine raw material for a complete reaction. By controlling the rotation angle of the second inlet pipe, the contact area between the exhaust port and the rotating sealing plate can be controlled, thereby controlling the amount of hydrogen fluoride gas discharged and ensuring a complete reaction between the hydrogen fluoride gas and the pyridine raw material. The first rotating motor drives the first rotating worm gear to rotate, and the meshing connection between the first rotating worm gear and the first rotating worm wheel causes the first rotating worm wheel to drive the second rotating sleeve to rotate. This achieves horizontal rotation of the outlet pipe, the stirring rod, and the spiral stirring plate, enabling the reaction of the pyridine raw material and the hydrogen fluoride gas. Thorough stirring improves the reaction efficiency of pyridine raw material and hydrogen fluoride gas. Simultaneously, a second rotating motor drives a second rotating worm gear. Utilizing the meshing connection between the second rotating worm gear and the second rotating worm wheel, the second rotating worm wheel drives the first rotating sleeve and the second bevel gear transmission assembly to rotate. The second bevel gear transmission assembly then drives the stirring rod and the spiral stirring plate, further enhancing the reaction efficiency of pyridine raw material and hydrogen fluoride gas. A gas pump pumps hydrogen fluoride gas into the outlet pipe through the third and second inlet pipes. Pumping hydrogen fluoride gas from the bottom of the reaction chamber further improves the reaction efficiency. When hydrogen fluoride gas passes through the connecting joint, the second sealing plate adheres to the recovery bend, preventing hydrogen fluoride gas from flowing into the recovery bend. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the gas recovery mechanism in this invention;

[0034] Figure 3 This is a three-dimensional structural diagram of the recycling bin in this invention;

[0035] Figure 4 This is a three-dimensional structural diagram of the cross-section of the recovery bin in this invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the first sealing plate in this invention;

[0037] Figure 6 This is a three-dimensional structural diagram of the cross-section of the recycling bend in this invention;

[0038] Figure 7 This is a three-dimensional structural diagram of the second sealing plate in this invention;

[0039] Figure 8This is a three-dimensional cross-sectional structural diagram of the reaction mechanism in this invention;

[0040] Figure 9 This is a three-dimensional structural diagram of the rotating sealing plate in this invention;

[0041] Figure 10 This is a three-dimensional structural diagram of the air outlet pipe in this invention;

[0042] Figure 11 This is a three-dimensional structural diagram of the first rotating worm and the second rotating worm wheel in this invention;

[0043] Figure 12 This is a schematic diagram of the three-dimensional structure of the spiral stirring plate in this invention.

[0044] In the diagram: 1. Gas recovery mechanism; 101. Recovery chamber; 102. Exhaust port; 103. First recovery pipe; 104. Electric telescopic rod; 105. Squeezing piston; 106. First air inlet pipe; 107. First sealing spring; 108. First spring connecting block; 109. First sealing plate; 110. Recovery bend pipe; 111. Mounting groove; 112. Second sealing spring; 113. Second spring connecting piece; 114. Second sealing plate; 115. First support frame; 2. Reaction mechanism; 201. Reaction chamber; 202. Rotating sealing plate; 203. Tilting motor; 204. First bevel gear transmission assembly; 205. Second air inlet pipe; 206. Exhaust pipe; 207. First rotating bracket; 208. First rotating motor; 2 09. First rotating worm gear; 210. First rotating worm wheel; 211. Second rotating support; 212. Second rotating motor; 213. Second rotating worm gear; 214. Second rotating worm wheel; 215. Third air inlet pipe; 216. First rotating sleeve; 217. Second bevel gear transmission assembly; 218. Stirring rotating rod; 219. Spiral stirring plate; 220. Vent hole; 221. Second rotating sleeve; 222. Drain valve; 223. Hydrogen fluoride cylinder; 224. Air pump; 225. Fourth air inlet pipe; 226. Connecting joint; 227. Gas plug; 228. Second support frame; 229. Pyridine raw material tank; 230. Feed plug; 231. Scale; 232. Feed pump; 233. Feed pipe; 234. Exhaust hole. Detailed Implementation

[0045] 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.

[0046] Please see Figure 1-12This invention provides a technical solution: a gas recovery device and method for producing pyridine hydrogen fluoride, comprising a gas recovery mechanism 1 and an electric telescopic rod 104 installed inside the gas recovery mechanism 1. A reaction mechanism 2 is provided at the bottom of the gas recovery mechanism 1, and a drain valve 222 is fixedly installed on one side of the bottom of the reaction mechanism 2. The gas recovery mechanism 1 includes a recovery chamber 101, with an exhaust port 102 on one side of the front of the recovery chamber 101. A first recovery pipe 103 is fixedly installed on the side of the recovery chamber 101 near the exhaust port 102. The electric telescopic rod 104 is fixedly installed inside the recovery chamber 101, and a compression piston 105 is fixedly connected to the output end of the electric telescopic rod 104. A first air inlet pipe 106 is fixedly installed inside the recovery chamber 101, and the first air inlet pipe 106 is fixedly connected to the first recovery pipe 103. A fixed connection is established, with first sealing springs 107 symmetrically installed on the side of the recovery chamber 101 near the first air inlet pipe 106. The ends of the first sealing springs 107 are fixedly connected to first spring connecting blocks 108, and first sealing plates 109 are fixedly installed on the outer sides of the two first spring connecting blocks 108. The first sealing plates 109 are fitted and connected to the ends of the first air inlet pipe 106. By setting up the gas recovery mechanism 1, not only can excess hydrogen fluoride gas be recovered and reused using the recovery chamber 101, but also excess hydrogen fluoride gas can be recovered into the recovery chamber 101 using the first recovery pipe 103 and the first air inlet pipe 106. This causes the gas to squeeze the first spring connecting blocks 108 and separate them from the first air inlet pipe 106. When the recovery chamber 101 is full of gas, the squeezing piston 105 will push the electric telescopic rod 104 to retract, thereby storing excess hydrogen fluoride gas.

[0047] A first support frame 115 is fixedly installed at the bottom of the recovery bin 101. A recovery bend 110 is fixedly installed on the outer side of the recovery bin 101 near the exhaust port 102. An installation groove 111 is opened at the end of the recovery bend 110. A second sealing spring 112 is fixedly installed on the inner side of the installation groove 111. A second spring connecting piece 113 is fixedly connected to the end of the second sealing spring 112. A second sealing plate 114 is fixedly installed on the outer side of the second spring connecting piece 113. The second sealing plate 114 is fitted and connected to the end of the recovery bend 110. The compression is driven by the electric telescopic rod 104. Piston 105 moves inside recovery chamber 101. Under the elastic force of first sealing spring 107, first spring connecting block 108 is brought into contact with first air inlet pipe 106, allowing hydrogen fluoride gas to enter recovery bend 110 through exhaust port 102 and squeeze second sealing plate 114 into third air inlet pipe 215, thereby carrying out secondary reaction of excess hydrogen fluoride until no excess hydrogen fluoride gas is generated. This enables the recovery and utilization of excess hydrogen fluoride gas, and at the same time, it can precisely control the ratio of hydrogen fluoride gas to pyridine raw material, thereby controlling the concentration of hydrogen fluoride pyridine.

[0048] The reaction mechanism 2 includes a reaction chamber 201. A rotating sealing plate 202 is rotatably connected to the inner bottom of the reaction chamber 201. A tilting motor 203 is fixedly installed at the center of the inner bottom of the reaction chamber 201. A first bevel gear transmission assembly 204 is fixedly connected to the output end of the tilting motor 203. A second air inlet pipe 205 is rotatably connected inside the first bevel gear transmission assembly 204. An air outlet pipe 206 is fixedly installed around the first bevel gear transmission assembly 204. Several exhaust holes 234 are opened at the top of the air outlet pipe 206. By setting the reaction mechanism 2... Not only can the first bevel gear transmission assembly 204 be rotated by the flip motor 203, causing the first bevel gear transmission assembly 204 to drive the second air inlet pipe 205 to rotate, so that the air outlet pipe 206 at the top of the second air inlet pipe 205 faces upward, making it easier for hydrogen fluoride gas to enter the interior of the pyridine raw material and carry out a full reaction, but by controlling the rotation angle of the second air inlet pipe 205, the contact area between the exhaust port 234 and the rotating sealing plate 202 can be controlled, thereby controlling the amount of hydrogen fluoride gas discharged, so that the hydrogen fluoride gas can fully react with the pyridine raw material.

[0049] A first rotating bracket 207 is fixedly installed on the top of the reaction chamber 201. A first rotating motor 208 is fixedly installed on one side of the first rotating bracket 207. A first rotating worm 209 is fixedly connected to the output end of the first rotating motor 208. A first rotating worm wheel 210 is meshed with one side of the first rotating worm 209. A second rotating bracket 211 is fixedly installed on the top of the first rotating worm wheel 210. A second rotating motor 212 is fixedly installed on one side of the second rotating bracket 211. A second rotating worm 213 is fixedly connected to the output end of the second rotating motor 212. A second rotating worm 213 is meshed with one side of the second rotating worm wheel 213. A second rotating worm gear 214 is connected, and a third air intake pipe 215 is rotatably connected inside the second rotating worm gear 214. The third air intake pipe 215 is fixedly connected to the second air intake pipe 205. A first rotating sleeve 216 is fixedly installed at the bottom of the second rotating worm gear 214. Several second bevel gear transmission assemblies 217 are arranged in the middle of the first rotating sleeve 216. There are two second bevel gear transmission assemblies 217. Stirring rotating rods 218 are fixedly connected to the four sides of the two second bevel gear transmission assemblies 217. Spiral stirring plates 219 are symmetrically installed at the top and bottom of the stirring rotating rods 218. The interior of plate 19 has several vent holes 220. A second rotating sleeve 221 is fixedly connected to the bottom of the first rotating worm gear 210. The second rotating sleeve 221 is fixedly installed on the top of the rotating sealing plate 202. The second rotating sleeve 221 is rotatably connected to the vent pipe 206 and the stirring rotating rod 218. The first rotating motor 208 drives the first rotating worm 209 to rotate. Utilizing the meshing connection between the first rotating worm 209 and the first rotating worm gear 210, the first rotating worm gear 210 drives the second rotating sleeve 221 to rotate, thereby realizing the rotation of the vent pipe 206, the stirring rotating rod 218, and the worm gear 220. The horizontal rotation of the stirring plate 219 can fully stir the pyridine raw material and hydrogen fluoride gas, improving the reaction efficiency of the pyridine raw material and hydrogen fluoride gas. At the same time, the second rotating motor 212 drives the second rotating worm 213 to rotate. Utilizing the meshing connection between the second rotating worm 213 and the second rotating worm wheel 214, the second rotating worm wheel 214 drives the first rotating sleeve 216 and the second bevel gear transmission assembly 217 to rotate. The second bevel gear transmission assembly 217 drives the stirring rotating rod 218 and the spiral stirring plate 219 to rotate, which can further improve the reaction efficiency of the pyridine raw material and hydrogen fluoride gas.

[0050] A drain valve 222 is fixedly installed on one side of the bottom of the reaction chamber 201. A hydrogen fluoride cylinder 223 is fixedly installed on one side of the top of the reaction chamber 201. A gas pump 224 is fixedly installed on the top of the reaction chamber 201. A fourth inlet pipe 225 is fixedly connected to the output end of the gas pump 224. A connecting connector 226 is fixedly connected to the end of the fourth inlet pipe 225. The connecting connector 226 is fixedly connected to the recovery bend pipe 110 and the third inlet pipe 215, respectively. A gas plug 227 is provided on the top of the hydrogen fluoride cylinder 223. A second support frame 228 is symmetrically installed on the side of the reaction chamber 201 away from the hydrogen fluoride cylinder 223. A pyridine raw material tank 229 is fixedly installed on the top of the second support frame 228. A gas filling plug 227 is provided on the top of the pyridine raw material tank 229. A scale 231 is fixedly installed on the front of the pyridine raw material tank 229, and a feed pump 232 is fixedly installed at the bottom of the pyridine raw material tank 229. The output end of the feed pump 232 is fixedly connected to the feed pipe 233, which is fixedly connected to the reaction chamber 201. Hydrogen fluoride gas can be pumped into the interior of the outlet pipe 206 through the third inlet pipe 215 and the second inlet pipe 205 by the gas pump 224. By pumping hydrogen fluoride gas from the bottom of the reaction chamber 201, the reaction efficiency of pyridine raw material and hydrogen fluoride gas can be improved. When hydrogen fluoride gas passes through the connecting joint 226, it will not flow into the interior of the recovery bend pipe 110 because the second sealing plate 114 is in contact with the recovery bend pipe 110.

[0051] Working principle: Before using this gas recovery device for pyridine fluoride production and its operating method, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 12 As shown, firstly, the pyridine raw material is pumped into the interior of the reaction chamber 201 using the feed pump 232. The hydrogen fluoride gas is pumped into the interior of the outlet pipe 206 through the third inlet pipe 215 and the second inlet pipe 205 using the gas pump 224. By pumping the hydrogen fluoride gas from the bottom of the reaction chamber 201, the reaction efficiency of the pyridine raw material and the hydrogen fluoride gas can be improved. When the hydrogen fluoride gas passes through the connecting joint 226, the second sealing plate 114 is in contact with the recovery bend pipe 110, so the hydrogen fluoride gas will not flow into the interior of the recovery bend pipe 110.

[0052] Secondly, the first bevel gear transmission assembly 204 is rotated by the reversing motor 203, which in turn drives the second intake pipe 205 to rotate. This causes the exhaust pipe 206 at the top of the second intake pipe 205 to face upwards, facilitating the entry of hydrogen fluoride gas into the pyridine raw material for a complete reaction. By controlling the rotation angle of the second intake pipe 205, the contact area between the exhaust port 234 and the rotating sealing plate 202 can be controlled, thereby controlling the amount of hydrogen fluoride gas discharged and ensuring a complete reaction between the hydrogen fluoride gas and the pyridine raw material. The first rotating motor 208 drives the first rotating worm gear 209 to rotate. Utilizing the meshing connection between the first rotating worm gear 209 and the first rotating worm wheel 210, the first rotating worm gear 209... The worm gear 210 drives the second rotating sleeve 221 to rotate, thereby realizing the horizontal rotation of the gas outlet pipe 206, the stirring rotating rod 218, and the spiral stirring plate 219. This allows for thorough stirring of the pyridine raw material and hydrogen fluoride gas, improving the reaction efficiency of the pyridine raw material and hydrogen fluoride gas. At the same time, the second rotating motor 212 drives the second rotating worm 213 to rotate. Utilizing the meshing connection between the second rotating worm 213 and the second rotating worm wheel 214, the second rotating worm wheel 214 drives the first rotating sleeve 216 and the second bevel gear transmission assembly 217 to rotate. The second bevel gear transmission assembly 217 then drives the stirring rotating rod 218 and the spiral stirring plate 219 to rotate, further improving the reaction efficiency of the pyridine raw material and hydrogen fluoride gas.

[0053] Finally, excess hydrogen fluoride gas is recovered into the recovery chamber 101 using the first recovery pipe 103 and the first air inlet pipe 106. This causes the gas to compress the first spring connecting block 108 and separate it from the first air inlet pipe 106. When the recovery chamber 101 is full of gas, the compression piston 105 will push the electric telescopic rod 104 to retract, thus storing the excess hydrogen fluoride gas. At the same time, the electric telescopic rod 104 drives the compression piston 105 to move inside the recovery chamber 101. Under the elastic force of the first sealing spring 107, the first spring connecting block 108 is brought into contact with the first air inlet pipe 106, allowing the hydrogen fluoride gas to enter the recovery bend 110 through the exhaust port 102 and compress the second sealing plate 114 to discharge into the third air inlet pipe 215. This allows for a secondary reaction of the excess hydrogen fluoride until no more excess hydrogen fluoride gas is produced, thus enabling the recovery and utilization of excess hydrogen fluoride gas. Simultaneously, it allows for precise control of the ratio of hydrogen fluoride gas to pyridine raw material, thereby controlling the concentration of hydrogen fluoride pyridine.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas recovery device for the production of pyridine hydrogen fluoride, comprising a gas recovery mechanism (1) and an electric telescopic rod (104) installed inside the gas recovery mechanism (1). The gas recovery mechanism (1) is provided with a reaction mechanism (2) at the bottom, and a drain valve (222) is fixedly installed on one side of the bottom of the reaction mechanism (2). Its features are, Also includes: The gas recovery mechanism (1) includes a recovery chamber (101), an exhaust port (102) is provided on one side of the front of the recovery chamber (101), and a first recovery pipe (103) is fixedly installed on the side of the recovery chamber (101) near the exhaust port (102). Among them, the electric telescopic rod (104) is fixedly installed on one side of the inside of the recycling bin (101), and the output end of the electric telescopic rod (104) is fixedly connected to the compression piston (105). Among them, a first air inlet pipe (106) is fixedly installed on one side of the inside of the recycling bin (101), and the first air inlet pipe (106) is fixedly connected to the first recycling pipe (103); A recovery bend (110) is fixedly installed on the outer side of the recovery chamber (101) near the exhaust port (102). The reaction mechanism (2) includes a reaction chamber (201). A rotating sealing plate (202) is rotatably connected to the inner bottom of the reaction chamber (201). A flip motor (203) is fixedly installed at the center of the inner bottom of the reaction chamber (201). A first bevel gear transmission assembly (204) is fixedly connected to the output end of the flip motor (203). A second air inlet pipe (205) is rotatably connected inside the first bevel gear transmission assembly (204). An air outlet pipe (206) is fixedly installed around the first bevel gear transmission assembly (204). Several openings are provided on the top of the air outlet pipe (206). The exhaust port (234), the second air inlet pipe (205) and the third air inlet pipe (215) are fixedly connected. A hydrogen fluoride cylinder (223) is fixedly installed on one side of the top of the reaction chamber (201). A gas pump (224) is fixedly installed on the top of the reaction chamber (201). The output end of the gas pump (224) is fixedly connected to a fourth air inlet pipe (225). The end of the fourth air inlet pipe (225) is fixedly connected to a connector (226). The connector (226) is fixedly connected to the recovery bend pipe (110) and the third air inlet pipe (215) respectively. The gas pump (224) can pump hydrogen fluoride gas into the interior of the exhaust pipe (206) through the third air inlet pipe (215) and the second air inlet pipe (205).

2. The gas recovery device for the production of pyridine hydrogen fluoride according to claim 1, characterized in that: The recovery chamber (101) is symmetrically equipped with first sealing springs (107) on the side near the first air inlet pipe (106). The ends of the first sealing springs (107) are fixedly connected to first spring connecting blocks (108). The outer sides of the two first spring connecting blocks (108) are fixedly installed with first sealing plates (109). The first sealing plates (109) are closely connected to the ends of the first air inlet pipe (106). The bottom of the recovery chamber (101) is fixedly equipped with a first support frame (115).

3. The gas recovery device for the production of pyridine hydrogen fluoride according to claim 2, characterized in that: The end of the recycling bend (110) is provided with an installation groove (111). A second sealing spring (112) is fixedly installed on the inner side of the installation groove (111). A second spring connecting piece (113) is fixedly connected to the end of the second sealing spring (112). A second sealing plate (114) is fixedly installed on the outer side of the second spring connecting piece (113). The second sealing plate (114) is in close contact with the end of the recycling bend (110).

4. The gas recovery device for the production of pyridine hydrogen fluoride according to claim 3, characterized in that: The top of the reaction chamber (201) is fixedly mounted with a first rotating bracket (207), a first rotating motor (208) is fixedly mounted on one side of the first rotating bracket (207), a first rotating worm (209) is fixedly connected to the output end of the first rotating motor (208), and a first rotating worm wheel (210) is meshed with one side of the first rotating worm (209).

5. A gas recovery device for the production of pyridine hydrogen fluoride according to claim 4, characterized in that: A second rotating bracket (211) is fixedly installed on the top of the first rotating worm gear (210). A second rotating motor (212) is fixedly installed on one side of the second rotating bracket (211). A second rotating worm (213) is fixedly connected to the output end of the second rotating motor (212). A second rotating worm wheel (214) is meshed on one side of the second rotating worm wheel (213). A third air intake pipe (215) is rotatably connected inside the second rotating worm wheel (214).

6. A gas recovery device for the production of pyridine hydrogen fluoride according to claim 5, characterized in that: The bottom of the second rotating worm gear (214) is fixedly installed with a first rotating sleeve (216). The middle part of the first rotating sleeve (216) is provided with a number of second bevel gear transmission assemblies (217). There are two second bevel gear transmission assemblies (217). Stirring rotating rods (218) are fixedly connected around the two second bevel gear transmission assemblies (217). Spiral stirring plates (219) are symmetrically installed on the top and bottom of the stirring rotating rods (218). A number of ventilation holes (220) are opened inside the spiral stirring plates (219).

7. A gas recovery device for the production of pyridine hydrogen fluoride according to claim 6, characterized in that: The bottom of the first rotating worm gear (210) is fixedly connected to a second rotating sleeve (221). The second rotating sleeve (221) is fixedly installed on the top of the rotating sealing plate (202). The second rotating sleeve (221) is rotatably connected to the gas outlet pipe (206) and the stirring rotating rod (218) respectively. The drain valve (222) is fixedly installed on the bottom side of the reaction chamber (201). The top of the hydrogen fluoride cylinder (223) is provided with a gas plug (227).

8. A gas recovery device for the production of pyridine hydrogen fluoride according to claim 7, characterized in that: A second support frame (228) is symmetrically installed on the side of the reaction chamber (201) away from the hydrogen fluoride cylinder (223). A pyridine raw material tank (229) is fixedly installed on the top of the second support frame (228). A feed plug (230) is provided on the top of the pyridine raw material tank (229). A scale (231) is fixedly installed on the front of the pyridine raw material tank (229). A feed pump (232) is fixedly installed at the bottom of the pyridine raw material tank (229). A feed pipe (233) is fixedly connected to the output end of the feed pump (232). The feed pipe (233) is fixedly connected to the reaction chamber (201).

9. A method of using a gas recovery device for the production of pyridine fluoride, comprising the gas recovery device for the production of pyridine fluoride as described in claim 8, wherein the manufacturing method comprises the following steps: Step 1: The pyridine raw material is pumped into the reaction chamber (201) using the feed pump (232). Hydrogen fluoride gas is pumped into the outlet pipe (206) through the third inlet pipe (215) and the second inlet pipe (205) using the gas pump (224). By pumping hydrogen fluoride gas from the bottom of the reaction chamber (201), the reaction efficiency of the pyridine raw material and hydrogen fluoride gas can be improved. When the hydrogen fluoride gas passes through the connecting joint (226), the second sealing plate (114) is in contact with the recovery bend pipe (110), so the hydrogen fluoride gas will not flow into the interior of the recovery bend pipe (110). Step 2: The first bevel gear transmission assembly (204) is rotated by the flip motor (203), which in turn drives the second intake pipe (205) to rotate. This causes the exhaust pipe (206) at the top of the second intake pipe (205) to face upwards, facilitating the entry of hydrogen fluoride gas into the pyridine raw material for a full reaction. By controlling the rotation angle of the second intake pipe (205), the contact area between the exhaust port (234) and the rotating sealing plate (202) can be controlled, thereby controlling the amount of hydrogen fluoride gas discharged and ensuring a full reaction between the hydrogen fluoride gas and the pyridine raw material. The first rotating motor (208) drives the first rotating worm (209) to rotate. Utilizing the meshing connection between the first rotating worm (209) and the first rotating worm wheel (210), the first rotating worm... The wheel (210) drives the second rotating sleeve (221) to rotate, thereby realizing the horizontal rotation of the gas outlet pipe (206), the stirring rotating rod (218) and the spiral stirring plate (219), which can fully stir the pyridine raw material and hydrogen fluoride gas, and improve the reaction efficiency of the pyridine raw material and hydrogen fluoride gas. At the same time, the second rotating motor (212) drives the second rotating worm (213) to rotate. Utilizing the meshing connection between the second rotating worm (213) and the second rotating worm wheel (214), the second rotating worm wheel (214) drives the first rotating sleeve (216) and the second bevel gear transmission assembly (217) to rotate, which in turn drives the stirring rotating rod (218) and the spiral stirring plate (219) to rotate, which can further improve the reaction efficiency of the pyridine raw material and hydrogen fluoride gas. Step 3: Using the first recovery pipe (103) and the first inlet pipe (106), excess hydrogen fluoride gas is recovered into the recovery chamber (101), causing the gas to compress the first spring connecting block (108) and separate from the first inlet pipe (106). When the recovery chamber (101) is full of gas, the compression piston (105) will push the electric telescopic rod (104) to retract, realizing the storage of excess hydrogen fluoride gas. At the same time, the electric telescopic rod (104) drives the compression piston (105) to move inside the recovery chamber (101), and the first seal is formed. Under the elastic force of the spring (107), the first spring connecting block (108) is brought into contact with the first air inlet pipe (106), so that the hydrogen fluoride gas enters the recovery bend pipe (110) through the exhaust port (102) and squeezes the second sealing plate (114) into the third air inlet pipe (215), thereby carrying out a secondary reaction of excess hydrogen fluoride until no excess hydrogen fluoride gas is generated. This enables the recovery and utilization of excess hydrogen fluoride gas, and at the same time, it can accurately control the ratio of hydrogen fluoride gas to pyridine raw material, thereby controlling the concentration of hydrogen fluoride pyridine.

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