Phosphorus trichloride split type storage tank

Abstract

The utility model relates to the technical field of chemical storage tanks, in particular to a phosphorus trichloride split type storage tank which comprises a tank body, a drying box, an air inlet pipe and an air outlet pipe. A discharge pipe and a communication port are arranged on the tank body, the drying box is fixedly arranged on the tank body, one side of the drying box is communicated with the tank body through an air inlet pipe, the other side of the drying box is communicated with the tank body through an air outlet pipe, and a drying pore plate is arranged in the drying box; a ventilator is arranged on the air inlet pipe, a first one-way valve is arranged between the air inlet pipe and the tank body so that air can flow from the tank body to the air inlet pipe in a one-way mode, and a second one-way valve is arranged between the air outlet pipe and the tank body so that air can flow from the air outlet pipe to the tank body in a one-way mode. In order to solve the technical problem that an existing storage tank has defects, a gas circulation drying path is established through the gas inlet pipe, the ventilator, the drying box, the gas outlet pipe and the like, so that air in the tank body can be dried continuously, and a drying atmosphere is created; and the potential influence of additionally introduced air on the contents in the tank body in the phosphorus trichloride introduction process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical industry storage tank technical field, concretely relates to a phosphorus trichloride split type storage tank. BACKGROUND

[0002] Phosphorus trichloride is an inorganic compound, mainly by a phosphorus atom and three chlorine atoms, it is a colorless to light yellow liquid, has strong irritating smell, has strong corrosive, commonly used in the production of pesticides, dyes, medicines and other chemicals, phosphorus trichloride is a volatile liquid at room temperature, easily soluble in a variety of organic solvents, such as alcohol and ether, but not in water, phosphorus trichloride storage tank is used for the special container of safe storage phosphorus trichloride this chemical substance, the design and operation of storage tank need to pay special attention to safety and environmental protection, because phosphorus trichloride will release toxic chlorine when leaking or contacting water.

[0003] In the process of introducing phosphorus trichloride into the storage tank, air is inevitably carried into the storage tank, the sources of these air include but are not limited to air from the outside environment, air in the system pipeline, and air from the empty storage tank, etc. The moisture in the air is difficult to control, and the existing storage tank lacks the ability to dry the air or exhaust the humid air. If the humidity in the tank exceeds the threshold value due to the humid air, the phosphorus trichloride will smoke and produce excessive toxic substances, causing harm to life when using phosphorus trichloride again. SUMMARY

[0004] In view of the technical problems of the existing storage tank defects, the utility model provides a phosphorus trichloride split type storage tank, which establishes a gas circulation drying path through the air inlet pipe, air exchanger, drying box and air outlet pipe, so that the gas entering the tank body can be continuously dried, a dry atmosphere is created, and the potential influence of additional air introduced during the introduction of phosphorus trichloride on the contents of the tank is reduced.

[0005] The technical scheme provided by the utility model is as follows: a phosphorus trichloride split type storage tank, comprising a tank body, a drying box, an air inlet pipe and an air outlet pipe; the tank body is provided with a discharge pipe and at least one communication port, the drying box is fixedly arranged on the tank body, one side of the drying box is communicated with the tank body through the air inlet pipe, the other side of the drying box is communicated with the tank body through the air outlet pipe, and a drying hole plate is arranged in the drying box; an air exchanger is arranged on the air inlet pipe, and a first one-way valve is arranged between the air inlet pipe and the tank body to enable the gas to flow from the tank body to the air inlet pipe in one direction, and a second one-way valve is arranged between the air outlet pipe and the tank body to enable the gas to flow from the air outlet pipe to the tank body in one direction.

[0006] Optionally, a filter plate is arranged on the side of the drying hole plate close to the air inlet pipe in the drying box.

[0007] Optionally, the communication between the drying box and the air inlet pipe is a first air outlet, the communication between the drying box and the air outlet pipe is a second air outlet, the first air outlet is lower than the second air outlet, and the filter plate and the drying hole plate are arranged in sequence from low to high between the first air outlet and the second air outlet.

[0008] Optionally, the drying hole plate is provided with at least two.

[0009] Optionally, the filter plate is provided with at least two.

[0010] Optionally, a clamping groove is arranged in the drying box, and the drying hole plate is inserted into the clamping groove in a plug-fit manner.

[0011] Optionally, the drying box comprises a box body and a cover plate, the cover plate is detachably connected with the box body, a sealing gasket is arranged between the cover plate and the box body, and the sealing gasket is used for filling a gap between the cover plate and the box body.

[0012] Optionally, a valve is arranged on the discharge pipe.

[0013] Optionally, a flange is arranged at the communication port.

[0014] Beneficial effects

[0015] Compared with the prior art, the technical scheme has the following beneficial effects: for the technical problem of defects existing in the existing storage tank, the gas circulation drying path is established through the air inlet pipe, the air exchange fan, the drying box and the air outlet pipe, so that the gas entering the tank body can be continuously dried, a dry atmosphere is created, and the potential influence of the additional air introduced in the process of introducing phosphorus trichloride on the content of the tank body is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The structure diagram of the phosphorus trichloride split type storage tank is provided for the embodiment of the utility model.

[0017] Fig. 2 The structure diagram of the drying box is provided for the embodiment of the utility model.

[0018] Fig. 3 The structure diagram of the cover plate is provided for the embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings and the embodiments.

[0020] The application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description. The first, second, and the like in the utility model are set for the convenience of describing the technical scheme of the utility model, and have no specific limiting effect, and are all generic, which does not constitute a limiting effect on the technical scheme of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The multiple technical schemes in the same embodiment, and the multiple technical schemes of different embodiments can be arranged and combined to form new technical schemes without contradiction or conflict, which are within the scope of the utility model.

[0021] In conjunction with the drawings Figs. 1-3 The embodiment provides a phosphorus trichloride split type storage tank, which comprises a tank body 1, a drying box 2, an air inlet pipe 3 and an air outlet pipe 4. The tank body 1 is provided with a discharge pipe 10 and at least one communication port 11, the drying box 2 is fixedly arranged on the tank body 1, one side of the drying box 2 is communicated with the tank body 1 through the air inlet pipe 3, the other side of the drying box 2 is communicated with the tank body 1 through the air outlet pipe 4, and the drying box 2 is provided with a drying hole plate 5.

[0022] The air inlet pipe 3 is provided with an air exchange fan 6, and a first one-way valve 71 is arranged between the air inlet pipe 3 and the tank body 1, so that the gas flows from the tank body 1 to the air inlet pipe 3 in one direction. A second one-way valve 72 is arranged between the air outlet pipe 4 and the tank body 1, so that the gas flows from the air outlet pipe 4 to the tank body 1 in one direction.

[0023] The phosphorus trichloride split type storage tank of the embodiment is a device specially designed for storing and handling phosphorus trichloride, which is an important chemical raw material used in the production of phosphoric acid, pesticides and other compounds. Due to its corrosive and toxic nature, special safety measures are required during storage and transportation.

[0024] The working principle is that before introducing phosphorus trichloride into the tank body 1, start the air exchange fan 6, and the air in the tank body 1 can flow into the drying box 2 through the first one-way valve 71 via the air inlet pipe 3. When the air passes through the drying hole plate 5, the moisture is absorbed, and the dried air flows back to the tank body 1 through the air outlet pipe 4 and the second one-way valve 72, thereby realizing the drying of the air in the tank body 1 before the introduction of phosphorus trichloride.

[0025] In addition, during the process of introducing phosphorus trichloride into the tank body 1, the air from the outside environment entering the production link or the air in the pipeline of the system where the tank body 1 is located will enter the tank body 1 along with the introduction of phosphorus trichloride. Therefore, during the process of introducing phosphorus trichloride into the tank body 1, the air exchange fan 6 is still continuously opened, consistent with the situation before the introduction of phosphorus trichloride. The gas circulation drying path established by the air inlet pipe 3, the air exchange fan 6, the drying box 2 and the air outlet pipe 4 will still function, continuously drying the air entering the tank body 1, ensuring that the humidity in the storage tank is below the threshold value.

[0026] In addition, during the process of transferring phosphorus trichloride from the tank body 1 to other process links, along with the export of phosphorus trichloride, gas will inevitably flow into the tank body 1 to ensure pressure balance in the tank body 1. During this process, the air exchange fan 6 is also kept open, and the above-mentioned gas circulation drying path will still function, continuously drying the air entering the tank body 1, ensuring that the humidity in the storage tank is below the threshold value.

[0027] For the process of transferring phosphorus trichloride from the tank body 1 to other process links, a dedicated pump and discharge pipe 10 must be used in cooperation. The discharge pipe 10 is preferably provided with a valve 101. By opening the valve 101 on the discharge pipe 10 and starting the pump, phosphorus trichloride is transferred from the tank body 1 to the subsequent process links such as reaction vessels, absolutely avoiding direct contact. The operator needs to ensure the sealing of the pipeline and the pump to prevent air leakage or leakage. The tank body 1 should be stored in a cool, well-ventilated place, avoiding direct sunlight and high temperature environment, and avoiding contact with water or other chemicals, because phosphorus trichloride reacts violently with water, which may generate hydrochloric acid and phosphoric acid.

[0028] The reaction of phosphorus trichloride with water generates hydrogen chloride gas, which is a strong corrosive and toxic gas. Through the drying treatment of the gas circulation drying path established by the air inlet pipe 3, the air exchange fan 6, the drying box 2 and the air outlet pipe 4 in the embodiment, the moisture in the air in the tank body 1 can be effectively reduced or removed, thereby significantly reducing the probability of this reaction and reducing the health risk of the operator.

[0029] In this embodiment, the arrangement of the first one-way valve 71 and the second one-way valve 72 ensures that air can only flow in one direction, preventing any possible reverse flow phenomenon, thereby reducing the risk of gas stagnation in the air inlet pipe 3 and the air outlet pipe 4, ensuring the stability and safety of the system.

[0030] At the same time as the addition of phosphorus trichloride, air is also continuously treated, avoiding the accumulation of moisture due to environmental factors during operation, and due to the continuous operation of the air exchange fan 6, the air treatment and phosphorus trichloride filling processes can be carried out in parallel, reducing the cycle time of each operation, thereby improving overall work efficiency.

[0031] Of course, as phosphorus trichloride continues to flow in, if the tank body 1 is not connected to the outside, the pressure inside the tank body 1 will gradually increase. In this embodiment, the arrangement of the communication port 11 allows the tank body 1 to be connected to the outside or other production links, and air can flow out of the tank body 1 through the communication channel and be collected and treated or used in other production links, thereby ensuring stable pressure in the tank. To facilitate the connection between the tank body 1 and other production links, a flange 110 is generally provided at the communication port 11.

[0032] In the preferred embodiment, the filter plate 8 is arranged on the side of the drying hole plate 5 close to the air inlet pipe 3 in the drying box 2, and through the multi-stage treatment of the filter plate 8 and the drying hole plate 5, it is ensured that the air introduced into the tank body 1 is subjected to sufficient filtration and drying. This design effectively removes particulate matter and moisture from the air, further improving air quality and reducing potential impacts on the contents of the tank body 1.

[0033] In the preferred embodiment, the communication between the drying box 2 and the air inlet pipe 3 is the first air port, the communication between the drying box 2 and the air outlet pipe 4 is the second air port, and the first air port is lower than the second air port; between the first air port and the second air port, the filter plate 8 and the drying hole plate 5 are arranged in order from low to high. In addition, the drying hole plate 5 and the filter plate 8 are both provided with multiple. In this way, the filtering and drying effect of the drying box 2 can be further improved.

[0034] The filter plate 8 and the drying hole plate 5 need to be detachably assembled in the drying box 2 for easy replacement and maintenance. In the preferred embodiment, the drying box 2 is provided with a clamping groove 20, and the drying hole plate 5 and the filter plate 8 can be inserted into the clamping groove 20 to realize assembly with the drying box 2. This assembly method is easy to disassemble and has high practicality and convenience.

[0035] In other embodiments, the drying box 2 comprises a box body 200 and a cover plate 201, the cover plate 201 is detachably connected with the box body 200, and a sealing gasket 202 is arranged between the cover plate 201 and the box body 200, which is used to fill the gap between the cover plate 201 and the box body 200. Through the use of the sealing gasket 202, it is ensured that there is no gap between the cover plate 201 and the drying box 2, thereby effectively preventing the leakage of gas inside the tank body 1, and such a sealing design greatly reduces the risk of accidents.

[0036] In this embodiment, the detachable design of the cover plate 201 enables the operator to conveniently open the drying box 2 for maintenance and repair, and regularly replace or clean the filter plate 8 and the drying hole plate 5, thereby ensuring the drying performance and avoiding the accumulation of dirt and impurities. Therefore, not only the work efficiency is improved, but also the service life is prolonged. It should be noted that when opening the drying box 2, the first one-way valve 71, the second one-way valve 72 and the air exchange fan 6 need to be closed in advance, which not only protects the substances in the tank body 1 from external influences, but also effectively reduces the possibility of releasing harmful gas to the environment.

[0037] In summary, the embodiment establishes a gas circulation drying path through the air inlet pipe 3, the air exchange fan 6, the drying box 2 and the air outlet pipe 4, so that the gas entering the tank body 1 can be continuously dried, a dry atmosphere is created, and the potential influence of the additional air introduced during the introduction of phosphorus trichloride on the contents of the tank body 1 is reduced.

[0038] The above describes the utility model and its embodiments in a schematic manner, which is not restrictive, and the drawings shown are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A split-type storage tank for phosphorus trichloride, characterized in that, It includes a tank (1), a drying oven (2), an air inlet pipe (3), and an air outlet pipe (4); The tank (1) is provided with a discharge pipe (10) and at least one connecting port (11). The drying box (2) is fixedly installed on the tank (1). One side of the drying box (2) is connected to the tank (1) through the air inlet pipe (3), and the other side of the drying box (2) is connected to the tank (1) through the air outlet pipe (4). A drying perforated plate (5) is provided inside the drying box (2). An air exchange fan (6) is provided on the air inlet pipe (3), and a first one-way valve (71) is provided between the air inlet pipe (3) and the tank (1) to allow gas to flow unidirectionally from the tank (1) to the air inlet pipe (3). A second one-way valve (72) is provided between the air outlet pipe (4) and the tank (1) to allow gas to flow unidirectionally from the air outlet pipe (4) to the tank (1).

2. The phosphorus trichloride split-type storage tank according to claim 1, characterized in that, Inside the drying chamber (2), a filter plate (8) is provided on the side of the drying perforated plate (5) near the air inlet pipe (3).

3. A phosphorus trichloride split-type storage tank according to claim 2, characterized in that, The connection between the drying chamber (2) and the air inlet pipe (3) is the first air outlet, and the connection between the drying chamber (2) and the air outlet pipe (4) is the second air outlet. The first air outlet is lower than the second air outlet. Between the first air outlet and the second air outlet, the filter plate (8) and the drying perforated plate (5) are arranged sequentially from low to high.

4. A phosphorus trichloride split-type storage tank according to claim 1 or 2, characterized in that, The drying perforated plate (5) is provided with at least two.

5. A phosphorus trichloride split-type storage tank according to claim 2, characterized in that, The filter plate (8) is provided with at least two.

6. A phosphorus trichloride split-type storage tank according to claim 1, characterized in that, The drying oven (2) is provided with a slot (20), and the drying perforated plate (5) is inserted into the slot (20).

7. A phosphorus trichloride split-type storage tank according to claim 1, characterized in that, The drying oven (2) includes a box body (200) and a cover plate (201). The cover plate (201) is detachably connected to the box body (200). A sealing gasket (202) is provided between the cover plate (201) and the box body (200). The sealing gasket (202) is used to fill the gap between the cover plate (201) and the box body (200).

8. A phosphorus trichloride split-type storage tank according to claim 1, characterized in that, A valve (101) is provided on the discharge pipe (10).

9. A phosphorus trichloride split-type storage tank according to claim 1, characterized in that, A flange (110) is provided at the connection port (11).

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