A layered tank for trioctyl phosphate

Abstract

The utility model relates to a technical field of chemical equipment, specifically disclose a layered tank for trioctyl phosphate, including the lower jar body, middle jar body, upper jar body and jar cover that are connected in proper order through flange from below to above, the anode plate is installed in the lower part of middle jar body, the cathode plate is installed in the lower part of upper jar body, the jar cover is fixed with the emulsion feed pipe that bottom extends to the middle part of middle jar body, the lower jar body is equipped with the water outlet pipe, and the upper jar body side wall is equipped with trioctyl phosphate export, the bottom of lower jar body is equipped with the vent, and the side wall is equipped with the observation opening for observation, the utility model discloses adopting the electric demulsification principle, through the anode plate and cathode plate 600-800V high voltage electric field is added, promotes the polarization of emulsion small droplet, collides and demulsification stratification, shortens the separation time, improves production efficiency, reduces operating cost.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a layered tank for trioctyl phosphate. Background Technology

[0002] Trioctyl phosphate is a flame retardant, plasticizer, and extractant widely used in chemical production, with its most important application in the production of hydrogen peroxide. As a solvent for anthraquinone, trioctyl phosphate possesses advantages such as high solubility of anthraquinone, a high partition coefficient of hydrogen peroxide between water and the solvent, a high boiling point, and a high flash point.

[0003] Trioctyl phosphate is typically synthesized by reacting phosphorus oxychloride with 2-ethylhexanol (i.e., isooctyl alcohol). In production, the acidic substances in the trioctyl phosphate are washed away with a weakly alkaline aqueous solution, and finally, residual alkaline substances are washed away with pure water. During the washing process, due to the emulsifying properties of the generated dioctyl phosphate and monooctyl phosphate, a large emulsion layer often appears at the separation interface. A common method is to collect the emulsions and allow them to stand for a long time to separate them. However, this method requires prolonged standing, has low separation efficiency, and exhibits poor continuity in the separation of the emulsion layer. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a layered container for trioctyl phosphate, which is specifically achieved through the following technical solution: A layered tank for trioctyl phosphate includes a lower tank, a middle tank, an upper tank, and a tank cover connected sequentially from bottom to top by flanges. An anode plate is installed at the lower part of the middle tank, and a cathode plate is installed at the lower part of the upper tank. An emulsion feed pipe is fixed on the tank cover, and the bottom of the emulsion feed pipe is located in the middle of the middle tank. A water outlet pipe is fixed on the lower tank, and a trioctyl phosphate outlet is provided on the side wall of the upper tank.

[0005] Both the cathode plate and the anode plate are provided with several water channels.

[0006] A vent pipe is also fixedly installed on the can lid. The vent pipe includes a horizontal part and a vertical part. The bottom of the vertical part penetrates the can lid and is located above the trioctyl phosphate outlet.

[0007] The bottom of the lower tank is provided with a vent.

[0008] An observation port for observing the contents of the lower tank is fixedly installed on the side wall of the lower tank, and the end of the observation port is closed by an end plate.

[0009] The water outlet pipe includes a horizontal section and a vertical section. The first end of the horizontal section extends to the outside of the observation port, and the second end is fixedly connected to the first end of the vertical section. The second end of the vertical section is located above the vent.

[0010] A jacket is fixedly installed on the outer wall of the tank; a hot water inlet is fixedly installed at the lower part of the jacket, and a hot water outlet is fixedly installed at the upper part.

[0011] The technical solution of this utility model has the following advantages: This device employs the principle of electro-demulsification, which utilizes a high-voltage electric field to polarize and deform small droplets in an emulsion, or cause them to collide and break the emulsion. The electro-demulsification process typically involves three steps: electro-induced aggregation of water droplets, droplet coalescence, and the settling and stratification of droplets at the oil-water interface. Electro-demulsification is economical, efficient, and suitable for continuous, large-scale emulsion treatment.

[0012] Add the trioctyl phosphate emulsion to be separated to the separator into the separation tank. Apply voltage to the anode and cathode plates, adjusting the voltage to 600-800V. The water outlet pipe at the observation port is L-shaped. The trioctyl phosphate emulsion to be separated is continuously introduced into the emulsion feed pipe. Adjust the voltage and emulsion flow rate to continuously demulsify and separate the emulsion. Passing hot water at 40-80℃ through the jacket is beneficial to improving the separation effect. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram, 1-vent, 2-lower tank, 3-anode plate, 4-hot water inlet, 5-jacket, 6-emulsion feed pipe, 7-cathode plate, 8-upper tank, 9-support leg, 10-tank cover, 11-vent pipe, 12-trioctyl phosphate outlet, 13-hot water outlet, 14-middle tank, 15-water outlet pipe. Detailed Implementation

[0015] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] As attached Figure 1 As shown, this utility model provides a layered tank for trioctyl phosphate, including a funnel-shaped lower tank 2, with a vent 1 at the bottom of the lower tank 2; during production, a shut-off valve needs to be installed at the vent 1 and kept in a normally closed state.

[0020] The top of the lower tank 2 is fixedly connected to the bottom of the middle tank 14 via a flange. The middle tank 14 is cylindrical and has a jacket 5 fixedly installed on its outer wall.

[0021] A hot water inlet 4 is fixedly installed at the lower part of the jacket 5, and a hot water outlet 13 is fixedly installed at the upper part. During use, hot water at 40-80℃ is introduced into the jacket to heat and keep the emulsion inside the tank warm, so that it is in a state most conducive to demulsification.

[0022] The top of the middle tank 14 is fixedly connected to the bottom of the upper tank 8 via a flange.

[0023] The diameter of the main body of the upper tank 8 is larger than that of the middle tank 14. Therefore, a funnel-shaped connecting part is provided at the bottom of the upper tank 8. The bottom of the connecting part, i.e. the small diameter end, is fixed to the top of the middle tank 14 by a flange.

[0024] The top of the upper tank body 8 is fitted with a tank cover 10 via a flange.

[0025] An emulsion feed pipe 6 is fixedly installed in the middle of the can lid 10. The bottom of the emulsion feed pipe 6 passes through the can lid 10 and extends downward.

[0026] As attached Figure 1 As shown, the bottom of the emulsion feed pipe 6 is located in the middle of the intermediate tank 14.

[0027] A trioctyl phosphate outlet 12 is provided on the side wall of the upper tank 8.

[0028] Several support legs 9 are fixedly installed on the side wall of the upper tank body 8, and the support legs 9 are fixedly installed on the side wall of the upper tank body 8 in a circumferential array. The support legs 9 are used to fix the entire tank body on the worktable.

[0029] An observation port is fixedly installed on the side wall of the lower tank 2. The observation port is made of a transparent material, such as glass, and is used to observe the situation inside the lower tank 2. The end of the observation port is closed by an end plate. A water outlet pipe 15 is fixedly installed on the end plate. The water outlet pipe 15 includes a horizontal part and a vertical part. The first end of the horizontal part extends to the outside of the observation port, and the second end is fixedly connected to the first end of the vertical part. The second end of the vertical part extends vertically downward and is located above the vent 1.

[0030] A cathode plate 7 is installed at the lower part of the upper tank body 8. The outer edge of the cathode plate 7 can be directly fixed to the inner wall of the upper tank body 8, or it can be fixed to the inner wall of the upper tank body 8 by means of support rods or other components. In this case, there is a gap between the outer edge of the cathode plate 7 and the inner wall of the upper tank body 8.

[0031] An anode plate 3 is installed at the lower part of the intermediate tank 14. The outer edge of the anode plate 3 can be directly fixed to the inner wall of the intermediate tank 14, or it can be fixed to the inner wall of the intermediate tank 14 by means of support rods or other components. In this case, there is a gap between the outer edge of the anode plate 3 and the inner wall of the intermediate tank 14.

[0032] Both the cathode plate 7 and the anode plate 3 are provided with several water channels.

[0033] A vent pipe 11 is also fixedly installed on the can lid 10. The vent pipe 11 includes a horizontal part and a vertical part. The top of the vertical part is fixedly connected to the horizontal part, and the bottom of the vertical part penetrates through the can lid 10. The bottom of the vent pipe 11 is located above the trioctyl phosphate outlet 12.

[0034] In use, first add trioctyl phosphate emulsion to the stratification tank through the emulsion feed pipe 6, turn on the hot circulating water of the jacket 5, adjust the temperature to 40-80℃, turn on the voltage of the anode plate 3 and the cathode plate 7, and adjust the voltage to 600-800V. The trioctyl phosphate emulsion will start to enter continuously. Observe the condition of the water outlet pipe 15. If emulsification occurs, adjust the flow rate of the emulsion feed pipe 6 and the voltage between the anode plate 3 and the cathode plate 7 until the water outlet is clear and stable, and then continuously enter the emulsion for separation.

[0035] This device achieves efficient and continuous separation of trioctyl phosphate emulsion by combining electro-demulsification with a heating and insulation system. It effectively solves the problems of low separation efficiency and poor continuity caused by the presence of an emulsion layer in existing technologies, greatly improving production efficiency and operational convenience. A high-voltage electric field of 600-800V is applied to the anode plate 3 and cathode plate 7, causing the small droplets in the emulsion to polarize, deform, and collide with each other, promoting droplet aggregation, coalescence, and sedimentation. This completes the demulsification process in a short time, shortening the separation time and improving processing capacity and economy. Simultaneously, hot water at 40-80℃ is circulated through the jacket 5, achieving circulating heating through the hot water inlet 4 and hot water outlet 13, providing a suitable temperature environment for the emulsion in the tank. This effectively reduces the emulsion viscosity, enhances fluidity, further optimizes the demulsification effect, and ensures a stable and reliable separation process. The emulsion feed pipe 6 provides continuous feeding, while the water outlet pipe 15 and trioctyl phosphate outlet 12 provide continuous discharge, enabling continuous operation throughout the entire process and meeting the needs of large-scale industrial production. Furthermore, the structural design of the layered tanks fully considers practicality and reliability. The funnel-shaped structure of the lower tank 2 facilitates the collection and rapid discharge of the aqueous phase, while the larger diameter of the upper tank 8 provides ample separation space to ensure thorough stratification of the oil and water phases. The support legs 9 firmly support the entire equipment, ensuring operational stability. The vent port 1 facilitates equipment maintenance and cleaning, improving operational flexibility, while the vent pipe 11 effectively prevents gas accumulation, avoids abnormal pressure, and ensures safe separation. The synergistic effect of these technical features not only significantly improves separation efficiency and continuity but also reduces energy consumption and operating costs, making this invention widely applicable in the chemical production field.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A layered container for trioctyl phosphate, characterized in that, The tank consists of a lower tank (2), a middle tank (14), an upper tank (8), and a tank cover (10) connected sequentially from bottom to top via flanges. An anode plate (3) is installed at the lower part of the middle tank (14), and a cathode plate (7) is installed at the lower part of the upper tank (8). An emulsion feed pipe (6) is fixed on the tank cover (10), and the bottom of the emulsion feed pipe (6) is located in the middle of the middle tank (14). A water outlet pipe (15) is fixed on the lower tank (2), and a trioctyl phosphate outlet (12) is provided on the side wall of the upper tank (8).

2. The layered tank for trioctyl phosphate according to claim 1, characterized in that, Both the cathode plate (7) and the anode plate (3) are provided with several water channels.

3. The layered tank for trioctyl phosphate according to claim 2, characterized in that, A vent pipe (11) is also fixedly installed on the can lid (10). The vent pipe (11) includes a horizontal part and a vertical part. The bottom of the vertical part penetrates the can lid (10) and is located above the trioctyl phosphate outlet (12).

4. The layered tank for trioctyl phosphate according to claim 3, characterized in that, The bottom of the lower tank (2) is provided with a vent (1).

5. The layered tank for trioctyl phosphate according to claim 4, characterized in that, An observation port for observing the inside of the lower tank (2) is fixedly installed on the side wall of the lower tank (2), and the end of the observation port is closed by an end plate.

6. The layered tank for trioctyl phosphate according to claim 5, characterized in that, The water outlet pipe (15) includes a horizontal part and a vertical part. The first end of the horizontal part extends to the outside of the observation port, and the second end is fixedly connected to the first end of the vertical part. The second end of the vertical part is located above the vent (1).

7. The layered tank for trioctyl phosphate according to claim 6, characterized in that, A jacket (5) is fixedly installed on the outer wall of the middle tank (14); a hot water inlet (4) is fixedly installed at the lower part of the jacket (5), and a hot water outlet (13) is fixedly installed at the upper part.

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