Phosphorus washing tower for phosphorus trichloride production

Abstract

The utility model discloses a phosphorus washing tower for phosphorus trichloride production, which comprises a phosphorus washing tower body, a condensate box is arranged on the top surface in the phosphorus washing tower body, the condensate box is integrally of a hollow cylinder structure, the condensate box is connected with an external liquid supply mechanism through a pump body, the bottom surface of the condensate box is a condensing surface, and the bottom surface of the condensate box is provided with a water inlet and a water outlet. The utility model provides a phosphorus washing tower for phosphorus trichloride production, which is characterized in that the phosphorus washing tower comprises a condensate tank, the condensate tank is internally filled with condensate, a plurality of mounting holes are formed in the bottom surface of the condensate tank, and the mounting holes are distributed in an annular array. The problems that liquid drops attached to the surface of a condensation plate cannot rapidly fall down, attachment to a condensation surface of follow-up gas inlet is reduced, and the follow-up gas condensation effect is poor due to the fact that condensation liquid drops are gathered and fall down through gravity along with condensation liquid drops are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphorus trichloride processing equipment, in particular to a phosphorus washing tower for phosphorus trichloride production. Background Art

[0002] Phosphorus trichloride (PCl3) is an inorganic compound belonging to the class of phosphorus halides with the chemical formula Cl3P. This colorless, clear, fuming liquid produces a white mist in moist air and reacts with water to produce phosphorous acid and hydrogen chloride, releasing a large amount of heat and smoke. At room temperature, phosphorus trichloride is a colorless, transparent, fuming liquid with a pungent and corrosive odor. Its melting point is -112°C, its boiling point is between 74 and 78°C, and its density is 1.574 g / cm3. 3 , soluble in a variety of organic solvents, such as benzene, ether, chloroform and carbon tetrachloride. Phosphorus trichloride needs to be condensed in a phosphorus washing tower. The gas in the phosphorus washing tower evaporates from the bottom of the tower upward, and the liquid flows downward from the upper packing layer, so that the gas and liquid phases contact in reverse in the packing layer, effectively removing solid particles and high-boiling point components carried in the gas.

[0003] Currently, during the condensation process of phosphorus trichloride, the gas directly contacts the condensation structure and forms condensate that adheres to the surface of the condensation structure. As the condensed droplets gather and fall by gravity, the condensation process is long, resulting in the droplets attached to the surface of the condensation plate not falling quickly, affecting the subsequent intake air and reducing the adhesion of the condensation surface, resulting in poor subsequent gas condensation effect.

[0004] Therefore, it is necessary to provide a phosphorus washing tower for phosphorus trichloride production to solve the above technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a phosphorus washing tower for phosphorus trichloride production to solve the problem that during the condensation process of the first phosphorus trichloride, the gas directly contacts the condensation structure and forms condensate that adheres to the surface of the condensation structure. As the condensed droplets gather and fall by gravity, the condensation process is long, resulting in the droplets attached to the surface of the condensation plate unable to fall quickly, affecting the reduction of the adhesion of the subsequent intake air to the condensation surface, resulting in poor subsequent gas condensation effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A phosphorus washing tower for phosphorus trichloride production, comprising: a phosphorus washing tower body;

[0008] A condensate tank is installed on the top surface of the phosphorus washing tower body. The condensate tank is a hollow cylindrical structure as a whole. The condensate tank is connected to an external liquid supply mechanism through a pump body. The bottom surface of the condensate tank is a condensation surface. Condensate is filled inside the condensate tank. Mounting holes are opened on the bottom surface of the condensate tank. A plurality of mounting holes are arranged in a circular array. A mounting pipe sealedly connected to the condensate tank is installed at the center of the bottom surface of the condensate tank. The upper and lower parts of the liquid removal mechanism are installed correspondingly above and below the condensate tank. A collection box is installed below the condensate tank.

[0009] In one embodiment, a condenser tube is installed in the mounting hole of the condensate tank. A plurality of condenser tubes are arranged in a circular array, and the condenser tubes are arranged in a one-to-one correspondence with the mounting holes.

[0010] In one embodiment, the condenser tube is a spiral structure with a hollow interior. An air inlet hole is provided at the bottom of the condenser tube. The condenser tube is sealed and connected to the mounting hole.

[0011] In one embodiment, the liquid removal mechanism consists of a motor, a rotating shaft, a collecting box, a scraper, a guide table, a guide groove, and a dripping port. The motor is installed on the top surface of the phosphorus washing tower body, and the motor is connected to the rotating shaft below. The rotating shaft passes through the mounting pipe and is connected to the collecting box located at the bottom surface of the condensate tank. A scraper is installed on the top surface of one side of the collecting box, and the top surface of the scraper abuts the bottom surface of the condensate tank. The scraper has an outer arc surface structure, and a guide table is installed on the inner bottom surface of the collecting box. A guide groove is provided on the top surface of the guide table, and the guide groove has an inner arc surface structure that is inclined downward as a whole. A dripping port is provided near the bottom end of the guide groove of the collecting box, and the dripping port is directly above the collecting box. The collecting box has an annular plate structure as a whole, and the top surface is open. The collecting box is connected to an external drainage pump body.

[0012] In one embodiment, the part of the rotating shaft located in the condensate tank is equipped with a fixed rod and a stirring plate, and two fixed rods are arranged at intervals, and the fixed rods are located between the condensation tubes. A stirring plate is installed at the bottom of the fixed rod, and the stirring plate is synchronously located between the condensation tubes, with a distance left between the stirring plate and the condensation tubes.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model starts the motor after the gas contacts the condensate tank and condenses, drives the rotating shaft to rotate, and simultaneously drives the collecting box to rotate, so that the scraper scrapes off the liquid droplets on the bottom of the condensate tank. Due to the arc surface structure of the scraper, the liquid droplets enter the interior of the collecting box and are introduced into the drip outlet through the inclined guide groove. As the gas rotates, the liquid droplets are discharged into the interior of the collecting box below, so that the liquid droplets on the bottom of the condensate tank are quickly scraped off, and will not cause space occupation problems for the subsequent condensation of the gas. The rotation of the rotating shaft synchronously drives the stirring plate to rotate in the area between the condenser tubes, stirring the condensate inside the condensate tank, which helps to change the position of the upper condensate and the lower condensate. The contact vibration generated during the stirring helps to increase the dripping of the condensate at the condenser tube and the condensate tank, further improving the liquid removal efficiency.

[0015] (2) The utility model condenses the gas into liquid through the bottom surface of the condensate tank, and part of the gas enters the spiral channel of the condenser tube. Since the upper part of the condenser tube is inside the condensate tank and the outer wall is inside the condensate, the gas condenses inside the condenser tube and flows back to the inside of the phosphorus washing tower body under the weight of the liquid droplets and the limitation of the spiral channel. The arrangement of the condenser tube increases the contact area between the gas and the condensation surface, improves the heat exchange condensation efficiency, and simultaneously improves the replacement of the condensation surface of the condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram and internal structure cross-sectional view of the utility model;

[0017] Figure 2 This is a detailed diagram of the components of the utility model after being disassembled;

[0018] Figure 3 This is a detailed diagram of the condenser tube of the utility model;

[0019] Figure 4 This is a detailed diagram of the liquid removal mechanism of the utility model.

[0020] Among them, the names corresponding to the figure marks are: phosphorus washing tower body 1, condensate tank 2, mounting hole 21, mounting pipe 22, liquid removal mechanism 3, motor 31, rotating shaft 32, collecting box 33, scraper 34, guide platform 35, guide groove 36, dripping port 37, fixing rod 38, stirring plate 39, condenser 4, air inlet 41, collecting box 5. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0022] like Figure 1-Figure 2As shown, the utility model provides a phosphorus washing tower for phosphorus trichloride production, comprising: a phosphorus washing tower body 1, a condensate tank 2, a liquid removal mechanism 3, a condensation pipe 4, and a collection box 5;

[0023] like Figure 1-Figure 2 As shown, a condensate tank 2 is installed on the top surface of the phosphorus washing tower body 1. The condensate tank 2 is a hollow cylindrical structure as a whole. The condensate tank 2 is connected to the external liquid supply mechanism through a pump body. The bottom surface of the condensate tank 2 is a condensation surface. The condensate tank 2 is filled with condensate. The bottom surface of the condensate tank 2 is provided with a mounting hole 21. There are multiple mounting holes 21 arranged in a circular array. A mounting pipe 22 sealed and connected thereto is installed at the center of the bottom surface of the condensate tank 2. The upper and lower parts of the liquid removal mechanism 3 are installed correspondingly on the top and bottom of the condensate tank 2. A collecting box 5 is installed on the bottom of the condensate tank 2.

[0024] Preferably, in one embodiment, Figure 2-Figure 3 As shown, a condenser tube 4 is installed in the installation hole 21 of the condensate tank 2 . A plurality of condenser tubes 4 are arranged in a circular array, and the condenser tubes 4 are arranged in a one-to-one correspondence with the installation holes 21 .

[0025] Preferably, in one embodiment, Figure 2-Figure 3 As shown, the condenser tube 4 is a spiral structure with a hollow interior as a whole. An air inlet 41 is provided at the bottom of the condenser tube 4. The condenser tube 4 is sealed and connected to the mounting hole 21. During operation, the gas condenses into liquid through the bottom surface of the condensate tank 2, and part of the gas enters the spiral channel of the condenser tube 4. Since the upper part of the condenser tube 4 is inside the condensate tank 4 and the outer wall is inside the condensate, the gas condenses inside the condenser tube 4 and is limited by the weight of the liquid droplets and the spiral channel and refluxes to the inside of the phosphorus washing tower body 1. Through the arrangement of the condenser tube 4, the contact area between the gas and the condensation surface is increased, the heat exchange condensation efficiency is improved, and the replacement of the condensation surface of the condensate is simultaneously improved.

[0026] Preferably, in one embodiment, Figure 4As shown, the liquid removal mechanism 3 is composed of a motor 31, a rotating shaft 32, a collecting box 33, a scraper 34, a guide platform 35, a guide groove 36, and a dripping port 37. The motor 31 is installed on the top surface of the phosphorus washing tower body 1, and the motor 31 is installed and connected to the rotating shaft 32 below. The rotating shaft 32 passes through the mounting tube 22 and is connected to the collecting box 33 located on the bottom surface of the condensate tank 2. A scraper 34 is installed on the top surface of one side of the collecting box 33. The top surface of the scraper 36 abuts against the bottom surface of the condensate tank 2. The scraper 34 has an outer arc surface structure. The inner bottom surface of the collecting box 33 is installed with a guide platform 35. The top surface of the guide platform 35 is provided with a guide groove 36. The guide groove 36 has an inner arc surface structure that is inclined downward. The collecting box 33 is close to the guide platform 35. A drip port 37 is provided at the bottom end of the groove 36. The drip port 37 is located directly above the collecting box 5. The collecting box 5 is an annular plate structure as a whole, and the top surface is open. The collecting box 5 is connected to the external drainage pump body. During operation, the gas condenses after contacting the condensate tank 2, and the motor 31 is started to drive the rotating shaft 32 to rotate, and the rotating shaft 32 synchronously drives the collecting box 33 to rotate, so that the scraper 34 scrapes off the droplets on the bottom surface of the condensate tank 2. Due to the arc surface structure of the scraper 34, the droplets enter the interior of the collecting box 35 and are introduced into the drip port 37 through the inclined guide groove 36. As the rotation occurs, the droplets are discharged into the interior of the collecting box 5 below, so that the droplets on the bottom surface of the condensate tank 2 are quickly scraped off, and no space occupation problem is caused for the subsequent condensation of the gas.

[0027] Preferably, in one embodiment, Figure 4 As shown, the part of the rotating shaft 32 located in the condensate tank 2 is equipped with a fixing rod 38 and a stirring plate 39, and the fixing rod 38 is provided with two at intervals. The fixing rod 38 is located between the condensation tubes 4, and the bottom of the fixing rod 38 is equipped with a stirring plate 39. The stirring plate 39 is synchronously located between the condensation tubes 4, and there is a distance between the stirring plate 39 and the condensation tubes 4. During operation, the rotation of the rotating shaft 32 synchronously drives the stirring plate 39 to rotate in the area between the condensation tubes 4, stirring the condensate inside the condensate tank 2, which helps to change the position of the upper condensate and the lower condensate. The contact vibration generated during stirring helps to promote the dripping of condensate at the condensation tubes 4 and the condensation tank 2, further improving the liquid removal efficiency.

[0028] Working principle of this utility model:

[0029] During operation, the gas condenses into liquid through the bottom surface of the condensate tank 2, and part of the gas enters the spiral channel of the condenser tube 4. Since the upper part of the condenser tube 4 is inside the condensate tank 4 and the outer wall is inside the condensate, the gas condenses inside the condenser tube 4 and flows back to the inside of the phosphorus washing tower body 1 under the weight of the droplets and the limitation of the spiral channel. The gas condenses after contacting the condensate tank 2, and the motor 31 is started to drive the rotating shaft 32 to rotate, and the rotating shaft 32 drives the collecting box 33 to rotate synchronously, so that the scraper 34 scrapes off the droplets on the bottom surface of the condensate tank 2. Due to the arc surface structure of the scraper 34, the droplets enter the inside of the collecting box 35 and are introduced into the drip port 37 through the inclined guide groove 36. As the scraper 34 rotates, the droplets are discharged into the inside of the collecting box 5 below, so that the droplets on the bottom surface of the condensate tank 2 are quickly scraped off, and no space occupation problem is caused for the subsequent condensation of the gas.

[0030] The above embodiment is only one of the preferred implementation methods of the present invention and should not be used to limit the scope of protection of the present invention. Any changes or modifications that have no substantive meaning made to the main design concept and spirit of the present invention, as long as the technical problems they solve are still consistent with the present invention, should be included in the scope of protection of the present invention.

Claims

1. A phosphorus washing tower for phosphorus trichloride production, characterized in that: include: Phosphorus washing tower body; A condensate tank is installed on the top surface of the phosphorus washing tower body. The condensate tank is a hollow cylindrical structure as a whole. The condensate tank is connected to an external liquid supply mechanism through a pump body. The bottom surface of the condensate tank is a condensation surface. Condensate is filled inside the condensate tank. Mounting holes are opened on the bottom surface of the condensate tank. A plurality of mounting holes are arranged in a circular array. A mounting pipe sealedly connected to the condensate tank is installed at the center of the bottom surface of the condensate tank. The upper and lower parts of the liquid removal mechanism are installed correspondingly above and below the condensate tank. A collection box is installed below the condensate tank.

2. A phosphorus washing tower for phosphorus trichloride production according to claim 1, characterized in that: A condensing tube is installed in the installation hole of the condensate tank. A plurality of the condensing tubes are arranged in a circular array, and the condensing tubes are arranged in a one-to-one correspondence with the installation holes.

3. A phosphorus washing tower for phosphorus trichloride production according to claim 2, characterized in that: The condenser tube is a spiral structure with a hollow interior. An air inlet hole is provided at the bottom of the condenser tube. The condenser tube is sealed and connected to the mounting hole.

4. A phosphorus washing tower for phosphorus trichloride production according to claim 1, characterized in that: The liquid removal mechanism consists of a motor, a rotating shaft, a collecting box, a scraper, a guide table, a guide groove, and a dripping port. The motor is installed on the top surface of the phosphorus washing tower body, and the motor is connected to the rotating shaft below. The rotating shaft passes through the mounting pipe and is connected to the collecting box located on the bottom surface of the condensate tank. A scraper is installed on the top surface of one side of the collecting box, and the top surface of the scraper abuts the bottom surface of the condensate tank. The scraper has an outer arc surface structure. The inner bottom surface of the collecting box is installed with a guide table. The top surface of the guide table is provided with a guide groove, and the guide groove has an inner arc surface structure that is inclined downward. The collecting box is provided with a dripping port near the bottom end of the guide groove, and the dripping port is directly above the collecting box. The collecting box has an annular plate structure as a whole, and the top surface is open. The collecting box is connected to an external drainage pump body.

5. A phosphorus washing tower for phosphorus trichloride production according to claim 4, characterized in that: The part of the rotating shaft located in the condensate tank is equipped with a fixing rod and a stirring plate. Two fixing rods are arranged at intervals. The fixing rods are located between the condensation tubes. A stirring plate is installed at the bottom of the fixing rod. The stirring plate is synchronously located between the condensation tubes and has a distance between the stirring plate and the condensation tubes.

Images