Purifying and filtering device for phosphorus oxychloride production

Abstract

The invention relates to the technical field of phosphorus oxychloride production, and discloses a purifying and filtering device for phosphorus oxychloride production, which comprises a mounting table, the top of the mounting table is fixedly connected with a mounting frame, the mounting frame is internally and rotatably connected with a mounting shaft, one end of the mounting shaft is fixedly connected with a preparation tank, and the preparation tank is internally and rotatably connected with a transmission pipe. According to the purifying and filtering device for phosphorus oxychloride production, phosphorus trichloride and oxygen are introduced into the preparation tank, then the reaction between the phosphorus trichloride and the oxygen is improved through the preparation mechanism in the preparation tank to generate phosphorus oxychloride, and then the prepared phosphorus oxychloride is introduced into the purifying mechanism; and then the generated phosphorus oxychloride is purified through the purification mechanism, so that the preparation and purification integrated processing of the phosphorus oxychloride is realized, and the preparation effect and the preparation efficiency of the phosphorus oxychloride are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of phosphorus oxychloride production, and in particular to a purification and filtering device for phosphorus oxychloride production. Background Art

[0002] Phosphorus oxychloride, an industrial chemical raw material, is a colorless, transparent, fuming liquid. It is a colorless, transparent liquid with a pungent odor that fumes violently in humid air, hydrolyzes into phosphoric acid and hydrogen chloride, and further generates HP2O4C l 3. It is widely used in the production of pesticides, medicines, dyes, phosphates and flame retardants. It is a raw material for the manufacture of organophosphorus pesticides, herbicides, chlordimeform, etc., and is used to produce plasticizers. It is also used in the chlorination reaction of long-acting sulfonamide drugs, an intermediate for the production of dyes, a chlorinating agent and catalyst for organic synthesis, and a uranium ore extractant. Electronic grade phosphorus oxychloride is used in the solar industry, integrated circuits, separation devices, optical preforms and other liquid phosphorus sources can also prepare phosphates, and is mainly used as an N-type doping source in the semiconductor industry.

[0003] Phosphorus oxychloride can be prepared by reacting phosphorus trichloride and oxygen in a reactor. Since phosphorus trichloride and oxygen fail to react fully during the reaction, a portion of phosphorus trichloride remains in the prepared phosphorus oxychloride, resulting in low purity of the prepared phosphorus oxychloride. At the same time, during the preparation process, phosphorus trichloride and oxygen need to be reacted and prepared first, and then placed in a purification tank for evaporation and purification, resulting in complex steps in the preparation process, which leads to low preparation efficiency and poor preparation effect of phosphorus oxychloride. Summary of the invention

[0004] The object of the present invention is to provide a purification and filtering device for the production of phosphorus oxychloride to solve the shortcomings of the above-mentioned background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A purification and filtering device for phosphorus oxychloride production, comprising a mounting platform, a mounting frame fixedly connected to the top of the mounting platform, a mounting shaft rotatably connected in the mounting frame, a preparation tank fixedly connected to one end of the mounting shaft, a transmission pipe rotatably connected in the preparation tank, and a preparation mechanism connected to the preparation tank is arranged on the transmission pipe;

[0007] The transmission tube is provided with a purification mechanism connected to the mounting platform, and the purification mechanism is used to purify the phosphorus oxychloride prepared by the preparation mechanism, and at the same time speed up the preparation of phosphorus oxychloride in the preparation tank. The outer surface of the transmission tube is transmission-connected with a transmission mechanism connected to the preparation tank, and the transmission mechanism is used to drive the transmission tube to rotate. The outer surface of the installation shaft is transmission-connected with a driving mechanism connected to the mounting frame, and the driving mechanism is used to drive the installation shaft to rotate.

[0008] As a further scheme of the present invention: the preparation mechanism includes a feeding funnel fixedly connected to the preparation tank, the feeding funnel is provided with an electromagnetic valve, two spacers are fixedly connected in the transmission tube, an air intake pipe fixedly connected to the spacer is fixedly connected in the transmission tube, a plurality of air outlet pipes are fixedly connected to the outer surface of the transmission tube, two air bags are fixedly connected to the outer surface of the preparation tank, a first spring is fixedly connected in the air bags, the outer surfaces of the air bags are fixedly connected to the first air supply pipe, the first air supply pipes are provided with a first one-way air valve, one end of the air intake pipe is rotatably connected to the first connecting pipe fixedly connected to the preparation tank, one end of the first connecting pipe is fixedly connected to the second air supply pipe fixedly connected to the first air supply pipe, the outer surface of the air bag is fixedly connected to the return pipe fixedly connected to the preparation tank, the return pipe is provided with a second one-way air valve, and the outer surface of the air bag is provided with an air supply mechanism connected to the mounting frame.

[0009] As a further solution of the present invention: the air supply mechanism includes an oxygen tank fixedly connected to the mounting frame, the outer surface of the oxygen tank is fixedly connected to an air pump through a pipeline, the output end of the air pump is fixedly connected to an air supply hose fixedly connected to the airbag, and a third one-way air valve is arranged on the air supply hose.

[0010] As a further solution of the present invention: the driving mechanism includes a driving motor fixedly connected to the mounting frame, the output end of the driving motor is fixedly connected to the driving shaft through a coupling, the outer surface of the driving shaft is fixedly sleeved with a first driving gear, and the outer surface of the first driving gear is meshingly connected with a second driving gear fixedly sleeved with the mounting shaft.

[0011] As a further solution of the present invention: the transmission mechanism includes a transmission motor fixedly connected to the preparation tank, the output end of the transmission motor is fixedly connected to the transmission shaft through a coupling, the outer surface of the transmission shaft is fixedly sleeved with a first gear, and the outer surface of the first gear is meshingly connected with a second gear fixedly sleeved with the transmission pipe.

[0012] As a further scheme of the present invention: the purification mechanism includes a purification tank fixedly connected to the mounting table, an electric heating plate fixedly connected inside the purification tank, a discharge pipe fixedly connected to the bottom of the preparation tank, an electromagnetic valve is arranged on the discharge pipe, a first hose fixedly connected to the purification tank is fixedly connected to the bottom of the discharge pipe, a second connecting pipe is fixedly connected between the two purification tanks, a second hose is fixedly connected to the outer surface of the second connecting pipe, one end of the second hose is fixedly connected to a third connecting pipe rotatably connected to a transmission pipe, the third connecting pipe is fixedly connected to the preparation tank, a plurality of cooling bends are fixedly connected to the outer surface of the transmission pipe, a fourth connecting pipe is fixedly connected to the outer surface of the transmission pipe, and a condensation mechanism connected to the mounting table is fixedly connected to the outer surface of the fourth connecting pipe.

[0013] As a further solution of the present invention: the condensation mechanism includes a condensation tank fixedly connected to the mounting table, a condensation pipe is fixedly connected inside the condensation tank, the outer surface of the fourth connecting pipe is fixedly connected to the third hose fixedly connected to the condensation pipe, and the outer surface of the condensation pipe is fixedly connected to a discharge pipe.

[0014] As a further solution of the present invention: the top of the mounting platform is fixedly connected with the output end of a water cooler which is connected to a condensation tank via a pipeline and a water pump, and the outer surface of the condensation tank is fixedly connected to the water cooler via a pipeline.

[0015] As a further solution of the present invention: a plurality of heat sinks are fixedly connected to the outer surface of the condensation tank.

[0016] Beneficial effects of the present invention:

[0017] (1) Phosphorus trichloride and oxygen are introduced into a preparation tank, and then a preparation mechanism in the preparation tank is used to increase the reaction between phosphorus trichloride and oxygen to generate phosphorus oxychloride, and then the prepared phosphorus oxychloride is introduced into a purification mechanism, and then the generated phosphorus oxychloride is purified by the purification mechanism, thereby realizing the integrated preparation and purification of phosphorus oxychloride, and greatly improving the preparation effect and efficiency of phosphorus oxychloride.

[0018] (2) Phosphorus trichloride and oxygen are introduced into a preparation tank, and then the preparation tank is driven to swing and the transmission pipe is driven to rotate. During the rotation, the air bag supplies oxygen into the preparation tank by squeezing the air, so that oxygen and phosphorus trichloride react fully. At the same time, the heat during cooling in the purification process is used to heat the phosphorus trichloride and oxygen during the reaction process, further promoting the reaction of phosphorus trichloride and oxygen, thereby achieving a full reaction of phosphorus oxychloride and oxygen during the reaction process, reducing the residual phosphorus trichloride and improving the purity of the prepared phosphorus oxychloride.

[0019] (3) The phosphorus oxychloride vaporized by heating and evaporation is introduced into the preparation tank through the cooling elbow, and the phosphorus oxychloride in the preparation tank is used to preliminarily liquefy the purified and vaporized phosphorus oxychloride, which is convenient for subsequent condensation and liquefaction, and reduces the waste of resources for subsequent condensation and liquefaction. Then, the phosphorus oxychloride is introduced into the condenser again for re-liquefaction, thereby achieving sufficient condensation and liquefaction of the purified and vaporized phosphorus oxychloride, preventing a part of the vaporized phosphorus oxychloride from being not fully liquefied and being lost into the air, causing waste of phosphorus oxychloride and also causing pollution to the environment, thereby greatly improving the purification effect and purification efficiency of the prepared phosphorus oxychloride. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a first stereogram of the external structure of the present invention;

[0022] Figure 2 is a second stereoscopic diagram of the external structure of the present invention;

[0023] Figure 3 It is a three-dimensional diagram of the internal structure of the present invention;

[0024] Figure 4 This is a front view of the internal structure of the transmission tube of the present invention;

[0025] Figure 5 It is a front view of the internal structure of the airbag of the present invention;

[0026] Figure 6 This is a front view of the internal structure of the purification tank of the present invention;

[0027] Figure 7 The present invention Figure 1 A magnified view of middle;

[0028] Figure 8 The present invention Figure 2 Enlarged view of middle B;

[0029] Fig. 9 The present invention Figure 3 Amplification of middle C.

[0030] In the figure: 1, mounting table; 2, mounting frame; 3, mounting shaft; 4, preparation tank; 5, transmission pipe; 11, feeding funnel; 12, spacer; 13, air inlet pipe; 14, air bag; 15, first spring; 16, first air supply pipe; 17, first one-way air valve; 18, first connecting pipe; 19, second air supply pipe; 190, return air pipe; 191, second one-way air valve; 192, outlet pipe; 21, oxygen tank; 22, air pump; 23, air supply hose; 24, third one-way air valve; 31, drive motor; 3 2. Drive shaft; 33. First drive gear; 34. Second drive gear; 41. Transmission motor; 42. Drive shaft; 43. First gear; 44. Second gear; 51. Purification tank; 52. Discharge pipe; 53. First hose; 54. Second connecting pipe; 55. Second hose; 56. Third connecting pipe; 57. Cooling elbow; 58. Fourth connecting pipe; 59. Electric heating plate; 61. Condensation tank; 62. Condensation pipe; 63. Third hose; 64. Discharge pipe; 65. Water cooler; 66. Heat sink. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 As shown, the present invention is a purification and filtration device for the production of phosphorus oxychloride, a purification and filtration device for the production of phosphorus oxychloride, comprising a mounting platform 1, a mounting frame 2 is fixedly connected to the top of the mounting platform 1, a mounting shaft 3 is rotatably connected in the mounting frame 2, a preparation tank 4 is fixedly connected to one end of the mounting shaft 3, a transmission pipe 5 is rotatably connected in the preparation tank 4, and a preparation mechanism connected to the preparation tank 4 is arranged on the transmission pipe 5;

[0033] A purification mechanism connected to the mounting platform 1 is provided on the transmission tube 5, and the purification mechanism is used to purify the phosphorus oxychloride prepared by the preparation mechanism, and at the same time accelerate the preparation of phosphorus oxychloride in the preparation tank 4. The outer surface of the transmission tube 5 is transmission-connected with a transmission mechanism connected to the preparation tank 4, and the transmission mechanism is used to drive the transmission tube 5 to rotate. The outer surface of the mounting shaft 3 is transmission-connected with a driving mechanism connected to the mounting frame 2, and the driving mechanism is used to drive the mounting shaft 3 to rotate.

[0034] Phosphorus trichloride and oxygen are introduced into a preparation tank 4, and then a preparation mechanism in the preparation tank 4 is used to enhance the reaction between phosphorus trichloride and oxygen to generate phosphorus oxychloride, and then the prepared phosphorus oxychloride is introduced into a purification mechanism, and then the generated phosphorus oxychloride is purified by the purification mechanism, thereby realizing an integrated process of preparation and purification of phosphorus oxychloride, and greatly improving the preparation effect and efficiency of phosphorus oxychloride.

[0035] The preparation mechanism includes a feeding funnel 11 fixedly connected to the preparation tank 4, the feeding funnel 11 is provided with an electromagnetic valve, two spacers 12 are fixedly connected in the transmission pipe 5, an air intake pipe 13 fixedly connected to the spacer 12 is fixedly connected in the transmission pipe 5, a plurality of air outlet pipes 192 are fixedly connected to the outer surface of the transmission pipe 5, two air bags 14 are fixedly connected to the outer surface of the preparation tank 4, a first spring 15 is fixedly connected in the air bag 14, a first air supply pipe 16 is fixedly connected to the outer surface of the air bag 14, a first one-way air valve 17 is provided on the first air supply pipe 16, one end of the air intake pipe 13 is rotatably connected to a first connecting pipe 18 fixedly connected to the preparation tank 4, one end of the first connecting pipe 18 is fixedly connected to a second air supply pipe 19 fixedly connected to the first air supply pipe 16, a return air pipe 190 fixedly connected to the preparation tank 4 is fixedly connected to the outer surface of the air bag 14, a second one-way air valve 191 is provided on the return air pipe 190, and an air supply mechanism connected to the mounting frame 2 is provided on the outer surface of the air bag 14.

[0036] The air supply mechanism includes an oxygen tank 21 fixedly connected to the mounting frame 2, an outer surface of the oxygen tank 21 is fixedly connected to an air pump 22 through a pipeline, an output end of the air pump 22 is fixedly connected to an air supply hose 23 fixedly connected to the air bag 14, a third one-way air valve 24 is arranged on the air supply hose 23, the third one-way air valve 24 is prior art, so no further elaboration is made here, and the oxygen can be controlled to enter the air bag 14 only from the air supply hose 23, thereby preventing the oxygen from flowing back from the air bag 14.

[0037] The oxygen in the oxygen tank 21 is introduced into the air supply hose 23 through the air pump 22 and the pipeline, and then enters the air bag 14 through the third one-way air valve 24 on the air supply hose 23 to supplement the air bag 14 with oxygen.

[0038] The driving mechanism includes a driving motor 31 fixedly connected to the mounting frame 2. The driving motor 31 is controlled by a PLC programming program, and can be controlled to rotate forward and reverse and rotate at an angle. The output end of the driving motor 31 is fixedly connected to a driving shaft 32 through a coupling. The outer surface of the driving shaft 32 is fixedly sleeved with a first driving gear 33, and the outer surface of the first driving gear 33 is meshingly connected with a second driving gear 34 fixedly sleeved with the mounting shaft 3.

[0039] The driving motor 31 drives the driving shaft 32 to rotate, and the driving shaft 32 drives the mounting shaft 3 to rotate through the first driving gear 33 and the second driving gear 34 .

[0040] The transmission mechanism includes a transmission motor 41 fixedly connected to the preparation tank 4. The transmission motor 41 is controlled by a PLC programming program, and the transmission motor 41 can be controlled to rotate forward and reverse and rotate at an angle. The output end of the transmission motor 41 is fixedly connected to a transmission shaft 42 through a coupling, and an additional surface of the transmission shaft 42 is fixedly sleeved with a first gear 43, and an outer surface of the first gear 43 is meshingly connected with a second gear 44 fixedly sleeved with the transmission tube 5.

[0041] The transmission shaft 42 is driven to rotate by the transmission motor 41 , and the transmission shaft 42 drives the transmission tube 5 to rotate via the first gear 43 and the second gear 44 .

[0042] The phosphorus trichloride is introduced into the preparation tank 4 through the feed funnel 11, and then the electromagnetic valve on the feed funnel 11 is closed, and oxygen is filled into the air bag 14 through the air supply mechanism, and then the installation shaft 3 is driven by the driving mechanism to rotate back and forth, thereby driving the preparation tank 4 to swing back and forth. At the same time, during the swinging process, the preparation tank 4 drives the air bags 14 on the left and right sides to alternately squeeze the mounting frame 2. When the air bags 14 are squeezed, the oxygen in the air bags 14 is passed into the transmission pipe 5 through the first air supply pipe 16, the first one-way air valve 17, the first connecting pipe 18, the second air supply pipe 19 and the air inlet pipe 13. Then, the phosphorus trichloride drives the transmission pipe 5 to rotate back and forth through the transmission mechanism, and the transmission pipe 5 drives multiple air outlet pipes 192 to rotate back and forth. At the same time, the oxygen is uniformly passed into the preparation tank 4 through the multiple air outlet pipes 192. At the same time, the phosphorus trichloride in the preparation tank 4 swings back and forth in the preparation tank 4 and collides with the oxygen, so that it collides with the phosphorus trichloride in the preparation tank 4. The mixture is uniformly mixed to promote the full reaction of phosphorus trichloride and oxygen, so that phosphorus trichloride is fully reacted, thereby improving the purity of phosphorus oxychloride after preparation. At the same time, when the airbag 14 on one side is squeezed, the gas in the airbag 14 passes through the transmission pipe 5 and the air outlet pipe 192 to pass the gas into the preparation tank 4, and then the unreacted oxygen enters the other airbag 14 through the return pipe 190 and the second one-way air valve 191. At this time, the airbag 14 is inflated to relieve the pressure in the preparation tank 4. However, due to the filling of gas at this time, the pressure in the preparation tank 4 is relatively large. Under the action of the large pressure, the bonding tightness between oxygen and phosphorus trichloride is enhanced, thereby further promoting the reaction between phosphorus trichloride and oxygen, and at the same time, the unreacted oxygen is also recovered into the airbag 14. When it swings to the other side, the airbag 14 on the other side begins to compress and continuously supply the oxygen in the preparation tank 4, thereby achieving full reaction of phosphorus oxychloride and oxygen in the reaction process, thereby improving the purity of phosphorus oxychloride after preparation. At the same time, during the reaction process, the purification mechanism is also carried out, and during the purification process, the preparation tank 4 is heated to further promote the reaction between oxygen and phosphorus trichloride, so that the raw material phosphorus trichloride is fully reacted.

[0043] The purification mechanism includes a purification tank 51 fixedly connected to the mounting platform 1, an electric heating plate 59 fixedly connected inside the purification tank 51, a discharge pipe 52 fixedly connected to the bottom of the preparation tank 4, an electromagnetic valve is provided on the discharge pipe 52, a first hose 53 fixedly connected to the purification tank 51 is fixedly connected to the bottom of the discharge pipe 52, a second connecting pipe 54 is fixedly connected between the two purification tanks 51, a second hose 55 is fixedly connected to the outer surface of the second connecting pipe 54, one end of the second hose 55 is fixedly connected to a third connecting pipe 56 rotatably connected to the transmission pipe 5, the third connecting pipe 56 is fixedly connected to the preparation tank 4, a plurality of cooling bends 57 are fixedly connected to the outer surface of the transmission pipe 5, a fourth connecting pipe 58 is fixedly connected to the outer surface of the transmission pipe 5, and a condensation mechanism connected to the mounting platform 1 is fixedly connected to the outer surface of the fourth connecting pipe 58.

[0044] The condensation mechanism includes a condensation tank 61 fixedly connected to the mounting platform 1, a condensation pipe 62 fixedly connected inside the condensation tank 61, an outer surface of the fourth connecting pipe 58 fixedly connected to a third hose 63 fixedly connected to the condensation pipe 62, and an outer surface of the condensation pipe 62 fixedly connected to a discharge pipe 64.

[0045] The top of the mounting platform 1 is fixedly connected with the output end of the water cooler 65 which is connected to the condensation tank 61 through a pipeline and a water pump, and the outer surface of the condensation tank 61 is fixedly connected to the water cooler 65 through a pipeline.

[0046] The water in the condensation tank 61 is pumped into the water cooler 65 for cooling by a water pump, and the cooled coolant is pumped into the condensation tank 61 through the water pump and the pipeline, so that the coolant in the condensation tank 61 is circulated and cooled.

[0047] A plurality of heat sinks 66 are fixedly connected to the outer surface of the condensation tank 61 .

[0048] The heat dissipation of the coolant in the condensate tank 61 is improved by the heat sink 66 .

[0049] The discharge pipe 52 at the bottom of the preparation tank 4 is opened, and then the discharge pipe 52 supplies the phosphorus oxychloride obtained after the reaction into the purification tank 51 through the first hose 53. At this time, the preparation tank 4 prepares and processes the next batch of phosphorus oxychloride. At the same time, the electric heating plate 59 in the purification tank 51 works to heat the prepared phosphorus oxychloride solution. The heated and vaporized phosphorus oxychloride enters the transmission pipe 5 through the second connecting pipe 54, the second hose 55 and the third connecting pipe 56, and then enters the cooling elbow 57 through the transmission pipe 5. The phosphorus trichloride in the preparation tank 4 preliminarily cools the cooling elbow 57 and the vaporized phosphorus oxychloride introduced into the cooling elbow 57. At the same time, the heat in the cooling elbow 57 is conducted to the preparation tank 4 to heat the solution in the preparation tank 4, increase the temperature in the preparation tank 4, further promote the reaction efficiency and reaction effect between phosphorus trichloride and oxygen, and also After preliminary cooling, the preliminary vaporized phosphorus oxychloride is then introduced into the condenser 62 through the fourth connecting pipe 58 and the third hose 63 on the transmission pipe 5. At this time, the coolant in the condenser tank 61 dissipates heat to the condenser 62, thereby achieving full condensation and liquefaction of the purified and vaporized phosphorus oxychloride, preventing a part of the vaporized phosphorus oxychloride from being fully liquefied and dissipated into the air, causing waste of phosphorus oxychloride and also causing environmental pollution, thereby greatly improving the purification effect and efficiency of the prepared phosphorus oxychloride. At the same time, the phosphorus trichloride in the preparation tank 4 is used to perform preliminary liquefaction on the purified and vaporized phosphorus oxychloride, which is convenient for subsequent condensation and liquefaction, reducing the waste of resources for subsequent condensation and liquefaction, and also utilizing the heat in the preliminary condensation process to promote the reaction of phosphorus oxychloride and oxygen, thereby achieving integrated processing of phosphorus oxychloride, and also improving the production effect and efficiency of phosphorus oxychloride.

[0050] The working principle of the present invention is as follows: phosphorus trichloride is introduced into the preparation tank 4 through the feed funnel 11, and then the electromagnetic valve on the feed funnel 11 is closed, and oxygen is filled into the air bag 14 through the air supply mechanism, and then the installation shaft 3 is driven by the driving mechanism to rotate back and forth, thereby driving the preparation tank 4 to swing back and forth. At the same time, during the swinging process, the preparation tank 4 drives the air bags 14 on the left and right sides to alternately squeeze the mounting frame 2. When the air bags 14 are squeezed, the oxygen in the air bags 14 is passed into the transmission pipe 5 through the first air supply pipe 16, the first one-way air valve 17, the first connecting pipe 18, the second air supply pipe 19 and the air inlet pipe 13. Then, the phosphorus trichloride drives the transmission pipe 5 to rotate back and forth through the transmission mechanism, and the transmission pipe 5 drives multiple air outlet pipes 192 to rotate back and forth. At the same time, the oxygen is uniformly passed into the preparation tank 4 through the multiple air outlet pipes 192. At the same time, the phosphorus trichloride in the preparation tank 4 swings back and forth in the preparation tank 4 and collides with the oxygen, so that it collides with the oxygen in the preparation tank 4. The phosphorus trichloride is evenly mixed to promote the full reaction of phosphorus trichloride and oxygen, so that the phosphorus trichloride is fully reacted, thereby improving the purity of the prepared phosphorus oxychloride. At the same time, when the airbag 14 on one side is squeezed, the gas in the airbag 14 passes the transmission pipe 5 and the air outlet pipe 192 to pass the gas into the preparation tank 4, and then the unreacted oxygen enters the other airbag 14 through the return pipe 190 and the second one-way air valve 191. At this time, the airbag 14 is inflated to relieve the pressure in the preparation tank 4, but at this time, due to the filling of gas, the pressure in the preparation tank 4 is relatively large. Under the action of the large pressure, the bonding tightness between oxygen and phosphorus trichloride is enhanced, thereby further promoting the reaction between phosphorus trichloride and oxygen, and at the same time, the unreacted oxygen is also recovered into the airbag 14. When it swings to the other side, the airbag 14 on the other side begins to compress and continuously supply the oxygen in the preparation tank 4, so that the phosphorus oxychloride in the reaction process is fully reacted with oxygen, thereby improving the purity of the prepared phosphorus oxychloride. At the same time, during the reaction process, the purification mechanism is also carried out, and during the purification process, the preparation tank 4 is heated to further promote the reaction between oxygen and phosphorus trichloride, so that the raw material phosphorus trichloride is fully reacted.

[0051] The discharge pipe 52 at the bottom of the preparation tank 4 is opened, and then the discharge pipe 52 supplies the phosphorus oxychloride obtained after the reaction into the purification tank 51 through the first hose 53. At this time, the preparation tank 4 prepares and processes the next batch of phosphorus oxychloride. At the same time, the electric heating plate 59 in the purification tank 51 works to heat the prepared phosphorus oxychloride solution. The heated and vaporized phosphorus oxychloride enters the transmission pipe 5 through the second connecting pipe 54, the second hose 55 and the third connecting pipe 56, and then enters the cooling elbow 57 through the transmission pipe 5. The phosphorus trichloride in the preparation tank 4 preliminarily cools the cooling elbow 57 and the vaporized phosphorus oxychloride introduced into the cooling elbow 57. At the same time, the heat in the cooling elbow 57 is conducted to the preparation tank 4, and the solution in the preparation tank 4 is heated to increase the temperature in the preparation tank 4, further promoting the reaction efficiency and reaction effect between phosphorus trichloride and oxygen, and also The phosphorus oxychloride after purification and vaporization is fully condensed and liquefied, and a part of the vaporized phosphorus oxychloride is prevented from being fully liquefied and lost into the air, causing waste of phosphorus oxychloride and pollution to the environment, thereby greatly improving the purification effect and efficiency of the prepared phosphorus oxychloride. At the same time, the phosphorus trichloride in the preparation tank 4 is used to preliminarily liquefy the purified and vaporized phosphorus oxychloride, which is convenient for subsequent condensation and liquefaction, and reduces the waste of resources for subsequent condensation and liquefaction. At the same time, the heat in the preliminary condensation process is also used to promote the reaction of phosphorus oxychloride and oxygen, thereby realizing the integrated processing of phosphorus oxychloride, and also improving the production effect and efficiency of phosphorus oxychloride.

[0052] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A purification and filtration device for phosphorus oxychloride production, comprising a mounting platform (1), characterized in that: The top of the mounting platform (1) is fixedly connected to a mounting frame (2), a mounting shaft (3) is rotatably connected inside the mounting frame (2), one end of the mounting shaft (3) is fixedly connected to a preparation tank (4), a transmission pipe (5) is rotatably connected inside the preparation tank (4), and a preparation mechanism connected to the preparation tank (4) is provided on the transmission pipe (5); The transmission tube (5) is provided with a purification mechanism connected to the mounting platform (1), the purification mechanism is used to purify the phosphorus oxychloride prepared by the preparation mechanism, and at the same time accelerate the preparation of the phosphorus oxychloride in the preparation tank (4); the outer surface of the transmission tube (5) is transmission-connected to a transmission mechanism connected to the preparation tank (4), the transmission mechanism is used to drive the transmission tube (5) to rotate; the outer surface of the mounting shaft (3) is transmission-connected to a driving mechanism connected to the mounting frame (2), the driving mechanism is used to drive the mounting shaft (3) to rotate.

2. A purification and filtering device for phosphorus oxychloride production according to claim 1, characterized in that: The preparation mechanism comprises a feed hopper (11) fixedly connected to a preparation tank (4), the feed hopper (11) being provided with an electromagnetic valve, two spacers (12) being fixedly connected inside the transmission tube (5), an air intake pipe (13) being fixedly connected to the spacer (12) inside the transmission tube (5), a plurality of air outlet pipes (192) being fixedly connected to the outer surface of the transmission tube (5), two air bags (14) being fixedly connected to the outer surface of the preparation tank (4), a first spring (15) being fixedly connected inside the air bags (14), and a first air supply pipe (192) being fixedly connected to the outer surface of the air bags (14). 6), the first air supply pipe (16) is provided with a first one-way air valve (17), one end of the air inlet pipe (13) is rotatably connected to a first connecting pipe (18) fixedly connected to the preparation tank (4), one end of the first connecting pipe (18) is fixedly connected to a second air supply pipe (19) fixedly connected to the first air supply pipe (16), the outer surface of the air bag (14) is fixedly connected to a return air pipe (190) fixedly connected to the preparation tank (4), the return air pipe (190) is provided with a second one-way air valve (191), and the outer surface of the air bag (14) is provided with an air supply mechanism connected to the mounting frame (2).

3. A purification and filtering device for producing phosphorus oxychloride according to claim 2, characterized in that: The gas supply mechanism comprises an oxygen tank (21) fixedly connected to the mounting frame (2); an outer surface of the oxygen tank (21) is fixedly connected to an air pump (22) via a pipeline; an output end of the air pump (22) is fixedly connected to an air supply hose (23) fixedly connected to the air bag (14); and a third one-way air valve (24) is provided on the air supply hose (23).

4. A purification and filtering device for phosphorus oxychloride production according to claim 1, characterized in that: The driving mechanism comprises a driving motor (31) fixedly connected to the mounting frame (2); an output end of the driving motor (31) is fixedly connected to a driving shaft (32) via a coupling; a first driving gear (33) is fixedly sleeved on an outer surface of the driving shaft (32); and a second driving gear (34) is meshingly connected to an outer surface of the first driving gear (33) fixedly sleeved on the mounting shaft (3).

5. A purification and filtering device for phosphorus oxychloride production according to claim 1, characterized in that: The transmission mechanism comprises a transmission motor (41) fixedly connected to the preparation tank (4); the output end of the transmission motor (41) is fixedly connected to a transmission shaft (42) via a coupling; a first gear (43) is fixedly sleeved on the outer surface of the transmission shaft (42); and a second gear (44) fixedly sleeved on the outer surface of the first gear (43) is meshingly connected to a transmission tube (5).

6. A purification and filtering device for phosphorus oxychloride production according to claim 1, characterized in that: The purification mechanism comprises a purification tank (51) fixedly connected to the mounting platform (1), an electric heating plate (59) fixedly connected inside the purification tank (51), a discharge pipe (52) fixedly connected to the bottom of the preparation tank (4), an electromagnetic valve provided on the discharge pipe (52), a first hose (53) fixedly connected to the purification tank (51) fixedly connected to the bottom of the discharge pipe (52), a second connecting pipe (54) fixedly connected between the two purification tanks (51), the second connecting pipe (54) A second hose (55) is fixedly connected to the outer surface of the transmission tube (5); one end of the second hose (55) is fixedly connected to a third connecting tube (56) rotatably connected to the transmission tube (5); the third connecting tube (56) is fixedly connected to the preparation tank (4); a plurality of cooling bends (57) are fixedly connected to the outer surface of the transmission tube (5); a fourth connecting tube (58) is fixedly connected to the outer surface of the transmission tube (5); and a condensing mechanism connected to the mounting platform (1) is fixedly connected to the outer surface of the fourth connecting tube (58).

7. A purification and filtering device for phosphorus oxychloride production according to claim 6, characterized in that: The condensation mechanism comprises a condensation tank (61) fixedly connected to the mounting platform (1), a condensation pipe (62) fixedly connected inside the condensation tank (61), an outer surface of the fourth connecting pipe (58) fixedly connected to a third hose (63) fixedly connected to the condensation pipe (62), and an outer surface of the condensation pipe (62) fixedly connected to a discharge pipe (64).

8. A purification and filtering device for phosphorus oxychloride production according to claim 7, characterized in that: The top of the mounting platform (1) is fixedly connected to an output end of a water cooler (65) which is connected to a condensation tank (61) via a pipeline and a water pump, and the outer surface of the condensation tank (61) is fixedly connected to the water cooler (65) via a pipeline.

9. A purification and filtering device for producing phosphorus oxychloride according to claim 7, characterized in that: A plurality of heat sinks (66) are fixedly connected to the outer surface of the condensation tank (61).

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