A phosphorus trichloride washing tower for enhanced separation

Abstract

This utility model relates to the field of phosphorus washing tower technology and discloses a phosphorus trichloride washing tower with enhanced separation. It includes a tower base, a tower section bolted to the top of the base, and two support blocks fixedly connected to the inner wall of the tower section. A packing support plate is bolted to the top of support block one, and a liquid dispersion assembly is bolted to the top of support block two. A suction pipe is fixedly connected to the outer surface of the tower base. By setting up the dispersion assembly, when the liquid enters the inlet pipe, it enters a rectangular tube. The liquid then exits from multiple outlet holes on its outer surface, thus undergoing primary dispersion before falling into multiple annular dispersion plates below. All the liquid flows out from multiple inclined slots and falls into the dispersion plates for secondary dispersion. Finally, the liquid exits from multiple through holes in the dispersion plates after a tertiary dispersion. This facilitates sufficient contact with phosphorus trichloride gas and improves the mass transfer efficiency during the phosphorus washing process.

Description

Technical Field

[0001] This utility model relates to the field of phosphorus washing tower technology, specifically a phosphorus trichloride phosphorus washing tower with enhanced separation. Background Technology

[0002] In the production of phosphorus trichloride, the phosphorus washing tower plays a crucial role in achieving efficient and enhanced separation. Phosphorus trichloride often contains impurities, which severely affect its purity and quality, thus negatively impacting its application in the production of numerous downstream chemical products. The phosphorus washing tower, through specific physical or chemical methods, effectively removes these impurities from phosphorus trichloride, ensuring that the product meets high purity standards and satisfies the demand for high-quality phosphorus trichloride in various industrial sectors.

[0003] The existing phosphorus washing towers have suboptimal internal separation structures, resulting in limited gas-liquid contact area and low mass transfer efficiency during the phosphorus washing process. This leads to poor removal of impurities from phosphorus trichloride within the same processing time, making it difficult to meet the growing demand for high-purity phosphorus trichloride. Furthermore, the low mass transfer efficiency also means consuming more washing reagents and energy, increasing production costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a phosphorus trichloride washing tower with enhanced separation capabilities, which has the advantages of enabling sufficient gas-liquid contact and mixing, and removing yellow phosphorus components from phosphorus trichloride, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a phosphorus trichloride washing tower for enhanced separation, comprising a tower base, a tower section bolted to the top of the tower base, a support block one and a support block two fixedly connected to the inner wall of the tower section, a packing support plate bolted to the top of the support block one, a liquid dispersion component bolted to the top of the support block two, a suction pipe fixedly connected to the outer surface of the tower base, a three-way valve flanged to one end of the suction pipe, a bend pipe flanged to one end of the three-way valve, a circulation pump flanged to one end of the bend pipe, a delivery pipe connected to the output end of the circulation pump, a diversion pipe fixedly connected to the outer surface of the delivery pipe, a tower top bolted to the top of the tower section, and a discharge pipe fixedly connected to the top of the tower top;

[0008] The dispersion assembly includes a dispersion plate, a support plate is fixedly connected to the top surface of the dispersion plate, a plurality of annular dispersion angle plates of different diameters are fixedly connected to the top of the support plate, the bottom of the annular dispersion angle plates is provided with inclined slot holes, and a rectangular tube is welded to the top of the annular dispersion angle plates. A liquid outlet hole is provided through the outer surface of the rectangular tube, and a liquid inlet pipe is fixedly connected to the outer wall of the rectangular tube.

[0009] Preferably, an air inlet pipe is fixedly connected to the outer wall of the tower base, and two tower sections are provided, which are connected by bolts.

[0010] Preferably, a plurality of support blocks 1 and support blocks 2 are welded to the inner wall of the tower section around its axial direction, and a dispersion plate is bolted to the upper surface of the support block 2, and a manhole is provided on the outer wall of the tower section.

[0011] Preferably, the top surface of the dispersion plate has multiple through holes, and the top of the dispersion plate is welded with multiple support plates around its axial direction.

[0012] Preferably, one end of the suction pipe extends into the interior of the tower base relative to the three-way valve, the middle end of the three-way valve is connected to a replenishment pipe via a flange, one end of the replenishment pipe is connected to a replenishment pump, and the suction end of the replenishment pump is connected to a bend.

[0013] Preferably, the bottom end of the replenishment pump is connected to the dosing tank, a level gauge is installed on the outer surface of the tower base, and the end of the second bend relative to the replenishment pump is inserted into the dosing tank.

[0014] Compared with the prior art, this utility model provides a phosphorus trichloride washing tower with enhanced separation, which has the following beneficial effects:

[0015] This invention features a dispersion assembly. When the liquid medicine enters the inlet pipe, it flows into a rectangular tube. Subsequently, the liquid medicine is discharged from multiple outlet holes on its outer surface. After primary dispersion, the liquid medicine falls into multiple annular dispersion plates below. All the medicine flows out from multiple inclined slots and falls into the dispersion plate for secondary dispersion. Finally, the medicine medicine is discharged from multiple through holes in the dispersion plate for tertiary dispersion. After tertiary dispersion, the medicine medicine can be evenly distributed inside the tower section, which is beneficial for subsequent full contact with phosphorus trichloride gas and improves the mass transfer efficiency in the phosphorus washing process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the structure of this utility model;

[0018] Figure 3This is a three-dimensional schematic diagram of the dispersed components in the structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the circulating pump and other components in the structure of this utility model.

[0020] The components are as follows: 1. Tower base; 2. Tower section; 3. Support block one; 4. Packing support plate; 5. Support block two; 6. Dispersion assembly; 61. Dispersion plate; 62. Support plate; 63. Annular dispersion angle plate; 64. Inclined slot hole; 65. Rectangular tube; 66. Liquid outlet hole; 67. Liquid inlet pipe; 7. Liquid suction pipe; 8. Three-way valve; 9. Bend one; 10. Circulation pump; 11. Delivery pipe; 12. Diverter pipe; 13. Tower top; 14. Discharge pipe; 15. Air inlet pipe; 16. Make-up pipe; 17. Make-up pump; 18. Bend two; 19. Chemical dosing tank; 20. Level gauge; 21. Manhole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 A phosphorus trichloride washing tower for enhanced separation includes a tower base 1, a tower section 2 bolted to the top of the tower base 1, a support block 3 and a support block 5 fixedly connected to the inner wall of the tower section 2, a packing support plate 4 bolted to the top of the support block 3, a liquid dispersion component 6 bolted to the top of the support block 5, a suction pipe 7 fixedly connected to the outer surface of the tower base 1, a three-way valve 8 connected to one end of the suction pipe 7 via a flange, a bend 9 connected to one end of the three-way valve 8 via a flange, a circulation pump 10 connected to one end of the bend 9 via a flange, a delivery pipe 11 connected to the output end of the circulation pump 10, a diversion pipe 12 fixedly connected to the outer surface of the delivery pipe 11, a tower top 13 bolted to the top of the tower section 2, and a discharge pipe 14 fixedly connected to the top of the tower top 13.

[0023] The dispersion assembly 6 includes a dispersion plate 61, a support plate 62 is fixedly connected to the top surface of the dispersion plate 61, a plurality of annular dispersion angle plates 63 of different diameters are fixedly connected to the top of the support plate 62, the bottom of the annular dispersion angle plate 63 is provided with a slanted groove hole 64, and a rectangular tube 65 is welded to the top of the annular dispersion angle plate 63. A liquid outlet hole 66 is provided through the outer surface of the rectangular tube 65, and a liquid inlet pipe 67 is fixedly connected to the outer wall of the rectangular tube 65.

[0024] Specifically, an air inlet pipe 15 is fixedly connected to the outer wall of the tower base 1, and two tower sections 2 are provided, which are connected by bolts.

[0025] Specifically, multiple support blocks 3 and 5 are welded around the inner wall of tower section 2 along its axis. A dispersion plate 61 is bolted to the upper surface of support block 5. A manhole 21 is opened on the outer wall of tower section 2.

[0026] Phosphorus trichloride gas is introduced through the inlet pipe 15, allowing it to enter the tower base 1. Simultaneously, phosphorus washing agents are stored inside the tower base 1. Operating the three-way valve 8 connects the bend 9 and the suction pipe 7. When the circulation pump 10 is started, the agents inside the tower base 1 are drawn into the delivery pipe 11. The delivery pipe 11 then delivers the agents to two branch pipes 12, one end of which is connected to the inlet pipe 67. This allows the liquid to enter the dispersion assembly 6. Packing material is installed on the packing support plate 4. The dispersion assembly 6 evenly disperses the liquid, allowing it to fall into the packing below. Phosphorus trichloride gas also enters the packing and reacts fully with the liquid. A manhole 21 with a cover bolted to its outer surface allows maintenance personnel to enter the tower section 2 to replace the packing.

[0027] Specifically, the top surface of the dispersion plate 61 has multiple through holes, and multiple support plates 62 are welded to the top of the dispersion plate 61 around its axial direction.

[0028] After the reagent enters the inlet pipe 67, it flows into the rectangular tube 65. Subsequently, the reagent is discharged from multiple outlet holes 66 on the outer surface of the rectangular tube 65. After primary dispersion, the reagent falls into multiple annular dispersion plates 63 below. All the reagent flows out from multiple inclined slot holes 64 and falls into the dispersion plate 61 for secondary dispersion. Finally, the reagent is discharged from multiple through holes in the dispersion plate 61 for tertiary dispersion. After tertiary dispersion, the reagent can be evenly distributed inside the tower section 2, which is conducive to sufficient contact with phosphorus trichloride gas in the subsequent process, improves the mass transfer efficiency in the phosphorus washing process, and more effectively removes the yellow phosphorus component in phosphorus trichloride, thereby improving the purity of the phosphorus trichloride product and meeting the production requirements for high-purity phosphorus trichloride.

[0029] Specifically, the suction pipe 7 extends into the tower base 1 at one end relative to the three-way valve 8. The middle end of the three-way valve 8 is connected to the replenishment pipe 16 via a flange. One end of the replenishment pipe 16 is connected to the replenishment pump 17. The suction end of the replenishment pump 17 is connected to the second bend pipe 18.

[0030] Specifically, the bottom end of the replenishment pump 17 is connected to the dosing tank 19, a level gauge 20 is installed on the outer surface of the tower base 1, and one end of the bend 18 relative to the replenishment pump 17 is inserted into the dosing tank 19.

[0031] After the reagent reacts with phosphorus trichloride gas, the unreacted reagent passes through the packing and falls into the interior of the tower base 1. This reagent can be reused by the circulation pump 10 and the suction pipe 7. The liquid level gauge 20 can detect the liquid level inside the tower base 1 in real time. Once the liquid level reaches the critical value, the controller connects the liquid level gauge 20 and the replenishment pump 17. The replenishment pump 17, together with the bend pipe 18, draws the reagent from the dosing tank 19 into the replenishment pipe 16, and then enters the interior of the tower base 1 through the suction pipe 7. This replenishes the lost reagent.

[0032] In operation, phosphorus trichloride gas is introduced through the inlet pipe 15, allowing it to enter the tower base 1, which already contains phosphorus washing agent. Then, the three-way valve 8 is operated to connect the bend 9 and the suction pipe 7, starting the circulation pump 10 to draw the agent from the tower base 1 into the delivery pipe 11, which then delivers it to two branch pipes 12. The branch pipes 12 deliver the liquid to the inlet pipe 67, where it enters the rectangular pipe 65 and then exits through the outlet hole 66 for primary dispersion. The liquid then falls into the annular dispersion plate 63, flows out through the inclined slot hole 64 for secondary dispersion, and finally exits through the through hole of the dispersion plate 61 for tertiary dispersion, evenly distributing throughout the tower section 2. Simultaneously, phosphorus trichloride gas enters the packing and reacts fully with the dispersed liquid. This process, achieved by using two tower sections... 2. Two sets of dispersion components 6 and packing are also provided, so that phosphorus trichloride gas undergoes two reactions. After the reaction, the gas continues to rise and converges from the top of the tower 13, and finally is discharged from the discharge pipe 14. If maintenance or replacement of the packing is required, the cover plate on the outer surface of the manhole 21 can be removed to allow maintenance personnel to enter the tower section 2. After the reagent reacts with the phosphorus trichloride gas, the reagent that did not participate in the reaction falls through the packing into the tower base 1 and is reused through the circulation pump 10 and the suction pipe 7. The level gauge 20 detects the liquid level in the tower base 1 in real time. When the water level reaches the critical value, the controller (connected to the level gauge 20 and the replenishment pump 17) controls the replenishment pump 17 to draw the liquid from the dosing tank 19 through the second bend 18 and enter the tower base 1 through the replenishment pipe 16 and the suction pipe 7 to replenish the lost liquid.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phosphorus trichloride scrubbing column for the intensification of separation of phosphorus trichloride, comprising a column base (1), characterized in that: The top of the tower base (1) is bolted to a tower section (2). Support block 1 (3) and support block 2 (5) are fixedly connected to the inner wall of the tower section (2). The top of support block 1 (3) is bolted to a packing support plate (4). The top of support block 2 (5) is bolted to a liquid dispersion component (6). The outer surface of the tower base (1) is fixedly connected to a suction pipe (7). One end of the suction pipe (7) is connected to a three-way valve (8) via a flange. One end of the three-way valve (8) is connected to a bend pipe 1 (9) via a flange. One end of the bend pipe 1 (9) is connected to a circulation pump (10) via a flange. The output end of the circulation pump (10) is connected to a delivery pipe (11). The outer surface of the delivery pipe (11) is fixedly connected to a diversion pipe (12). The top of the tower section (2) is bolted to a tower top (13). The top of the tower top (13) is fixedly connected to a discharge pipe (14). The dispersion component (6) includes a dispersion plate (61), a support plate (62) is fixedly connected to the top surface of the dispersion plate (61), a plurality of annular dispersion angle plates (63) of different diameters are fixedly connected to the top of the support plate (62), the bottom of the annular dispersion angle plate (63) is provided with a slanted groove hole (64), and a rectangular tube (65) is welded to the top of the annular dispersion angle plate (63). The outer surface of the rectangular tube (65) is provided with a liquid outlet hole (66), and a liquid inlet pipe (67) is fixedly connected to the outer wall of the rectangular tube (65).

2. A phosphorus trichloride scrubbing column for enhanced separation according to claim 1, characterized in that: An air inlet pipe (15) is fixedly connected to the outer wall of the tower base (1), and two tower sections (2) are provided, which are connected by bolts.

3. A phosphorus scrubber tower for enhanced separation of phosphorus trichloride according to claim 1, characterized in that: Multiple support blocks 1 (3) and support blocks 2 (5) are welded around the inner wall of the tower section (2) along its axial direction. A dispersion plate (61) is bolted to the upper surface of the support block 2 (5). A manhole (21) is opened on the outer wall of the tower section (2).

4. A phosphorus scrubber tower for enhanced separation of phosphorus trichloride according to claim 1, characterized in that: The top surface of the dispersion plate (61) has multiple through holes, and the top of the dispersion plate (61) is welded with multiple support plates (62) around its axial direction.

5. The enhanced separation phosphorus scrubbing column of claim 1, wherein: The suction pipe (7) extends into the tower base (1) at one end relative to the three-way valve (8). The middle end of the three-way valve (8) is connected to the replenishment pipe (16) via a flange. One end of the replenishment pipe (16) is connected to the replenishment pump (17). The suction end of the replenishment pump (17) is connected to the second bend (18).

6. A phosphorus trichloride scrubbing column for enhanced separation according to claim 5, characterized in that: The bottom end of the replenishment pump (17) is connected to the dosing tank (19), and a level gauge (20) is installed on the outer surface of the tower base (1). The second bend (18) is inserted into the dosing tank (19) at one end relative to the replenishment pump (17).

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