Automatic argon filling device for titanium tetrachloride storage tank

Abstract

The utility model provides an automatic argon filling device for a titanium tetrachloride storage tank. The automatic argon filling device comprises a refined titanium tetrachloride storage tank, a digital display pressure gauge, a breathing gas exchange tank and a PLC (Programmable Logic Controller), a gas inlet and a gas outlet are formed in the top of the refined titanium tetrachloride storage tank; the digital display pressure gauge for monitoring the internal pressure in real time is mounted at the top of the refined titanium tetrachloride storage tank; the gas inlet is communicated with an argon main pipe through a gas inlet pipeline; the air outlet is communicated with the breathing air exchange tank through an air outlet pipeline; a pneumatic control valve I is arranged on the air inlet pipeline; a pneumatic control valve II is arranged on the air outlet pipeline; the digital display pressure gauge, the pneumatic control valve I and the pneumatic control valve II are electrically connected with the PLC respectively; and the breathing gas exchange tank is filled with titanium tetrachloride liquid. According to the technical scheme, the problem that materials in the tank are polluted due to the large breath phenomenon frequently generated during feeding and discharging of the refined titanium tetrachloride storage tank is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy and chemical industry, and in particular to an automatic argon filling device for a titanium tetrachloride storage tank. Background Art

[0002] Refined titanium tetrachloride is an inorganic compound and an important intermediate product for the production of metallic titanium and its compounds. At room temperature, refined titanium tetrachloride is a colorless transparent liquid, which generates titanium dioxide solid and hydrochloric acid and their mixtures when in contact with air. Therefore, during the storage of refined titanium tetrachloride, it is necessary to select a suitable inert gas to protect the material in real time.

[0003] During the transportation and storage of refined titanium tetrachloride, refined titanium tetrachloride is transported to refined titanium tetrachloride storage tanks through stainless steel pipes. Refined titanium tetrachloride is stored in closed stainless steel storage tanks. When materials are put into and out of the storage tanks, a large breathing phenomenon will occur. The refined titanium tetrachloride in the storage tanks is more or less in contact with the air, producing hydrochloric acid and its mixture and dissolving in the titanium tetrachloride and the walls of the transportation pipelines. The storage tanks are constantly subjected to trace corrosion, and additional impurities such as iron and oxygen are introduced, which invisibly affect the purity and quality of refined titanium tetrachloride and cause pollution of refined titanium tetrachloride. Utility Model Content

[0004] According to the above technical problem that the material in the refined titanium tetrachloride storage tank is contaminated by the frequent large breathing phenomenon when the material is loaded and unloaded, an automatic argon filling device for the titanium tetrachloride storage tank is provided, which has a simple structure, a reasonable design and timely detection, and can realize real-time argon filling protection for the refined titanium tetrachloride in the storage tank, avoid the contact of the product in the storage tank with the air to affect the purity and chromaticity of the product, and ensure the grade of the refined titanium tetrachloride.

[0005] The technical means adopted by the utility model are as follows:

[0006] An automatic argon filling device for a titanium tetrachloride storage tank, comprising a refined titanium tetrachloride storage tank, a digital pressure gauge, a breathing tank and a PLC controller;

[0007] An air inlet and an air outlet are provided on the top of the refined titanium tetrachloride storage tank; a digital pressure gauge for real-time monitoring of the internal pressure is installed on the top of the refined titanium tetrachloride storage tank;

[0008] The air inlet is connected to the argon main pipe through an air inlet pipe, and the argon main pipe is used to transport argon to the refined titanium tetrachloride storage tank; the air outlet is connected to the breathing air exchange tank through an air outlet pipe;

[0009] The air inlet pipeline is provided with a pneumatic regulating valve I; the air outlet pipeline is provided with a pneumatic regulating valve II; the digital pressure gauge, the pneumatic regulating valve I and the pneumatic regulating valve II are electrically connected to the PLC controller respectively, the digital pressure gauge is used to send the monitored internal pressure data of the refined titanium tetrachloride storage tank 1 to the PLC controller, and the PLC controller is used to control the opening and closing of the pneumatic regulating valve I and the pneumatic regulating valve II according to the pressure data;

[0010] The breathing ventilation tank is filled with titanium tetrachloride liquid, which is used to condense and recover the titanium tetrachloride gas discharged through the outlet pipe when the pressure is released; the end of the outlet pipe is located below the liquid level in the breathing ventilation tank.

[0011] Furthermore, when the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is lower than 0.5 kpa, the PLC controller controls the pneumatic regulating valve I to open, so that the argon main pipe fills the refined titanium tetrachloride storage tank with argon through the air inlet pipe; when the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is higher than 3 kpa, the PLC controller controls the pneumatic regulating valve II to open, so that the refined titanium tetrachloride storage tank releases pressure through the air outlet pipe.

[0012] Furthermore, when the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is 0.5-3 kPa, the PLC controller controls the pneumatic regulating valve I and the pneumatic regulating valve II to close, so that the internal pressure of the refined titanium tetrachloride storage tank 1 can be maintained within the range of 0.5-3 kPa.

[0013] Furthermore, the digital pressure gauge is installed on the top of the refined titanium tetrachloride tank through a flange, and the detection end of the digital pressure gauge extends into the interior of the refined titanium tetrachloride storage tank.

[0014] Furthermore, the air inlet pipe and the air outlet pipe are both stainless steel pipes, and the air inlet pipe and the air inlet port, as well as the air outlet pipe and the air outlet port are both connected by flange docking.

[0015] Furthermore, the argon main pipe is provided with an argon flow meter for monitoring the flow rate of argon.

[0016] Furthermore, a manual ball valve is also provided on the air intake pipe.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The automatic argon filling device for a titanium tetrachloride storage tank provided by the utility model can stably control the pressure in the storage tank by automatically pressurizing and releasing the argon gas in the storage tank. The entire storage tank is always maintained in a state of slightly positive pressure, and the refined titanium tetrachloride in the storage tank is protected in real time. From the perspective of the quality of the refined titanium tetrachloride in the storage tank, the refined titanium tetrachloride can be efficiently protected by argon gas in the storage tank, and the quality of the refined titanium tetrachloride obtained can continuously meet the requirements of high-end sponge titanium raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is a schematic structural diagram of the automatic argon filling device for the titanium tetrachloride storage tank of the utility model.

[0021] In the figure: 1. Refined titanium tetrachloride storage tank; 2-1. Pneumatic regulating valve I; 2-2. Pneumatic regulating valve II; 3. Manual ball valve; 4. Digital pressure gauge; 5. Argon flow meter; 6. Breathing exchange tank. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0029] Example 1

[0030] like Figure 1 As shown, the utility model provides an automatic argon filling device for a titanium tetrachloride storage tank, comprising a refined titanium tetrachloride storage tank 1, a digital pressure gauge 4, a breathing tank 6 and a PLC controller;

[0031] An air inlet and an air outlet are provided on the top of the refined titanium tetrachloride storage tank 1; a digital pressure gauge 4 for real-time monitoring of the internal pressure is installed on the top of the refined titanium tetrachloride storage tank 1;

[0032] The air inlet is connected to the argon main pipe through an air inlet pipe, and the argon main pipe is used to transport argon to the refined titanium tetrachloride storage tank 1; the air outlet is connected to the breathing ventilation tank 6 through an air outlet pipe;

[0033] The air inlet pipeline is provided with a pneumatic regulating valve Ⅰ2-1; the air outlet pipeline is provided with a pneumatic regulating valve Ⅱ2-2; the digital pressure gauge 4, the pneumatic regulating valve Ⅰ2-1 and the pneumatic regulating valve Ⅱ2-2 are electrically connected to the PLC controller respectively, the digital pressure gauge 4 is used to send the monitored internal pressure data of the refined titanium tetrachloride storage tank 1 to the PLC controller, and the PLC controller is used to control the opening and closing of the pneumatic regulating valve Ⅰ2-1 and the pneumatic regulating valve Ⅱ2-2 according to the pressure data, so as to realize automatic argon filling and pressure relief;

[0034] The breathing ventilation tank 6 is filled with titanium tetrachloride liquid, which is used to condense and recover the titanium tetrachloride gas discharged through the outlet pipe when the pressure is released; the end of the outlet pipe is located below the liquid level in the breathing ventilation tank 6, which is used to establish a liquid seal to prevent air from entering the refined titanium tetrachloride storage tank 1 through the outlet pipe and contaminating the refined titanium tetrachloride.

[0035] Furthermore, when the digital pressure gauge 4 detects that the internal pressure of the refined titanium tetrachloride storage tank 1 is lower than 0.5 kpa, the PLC controller controls the pneumatic regulating valve Ⅰ2-1 to open, so that the argon main pipe fills the refined titanium tetrachloride storage tank 1 with argon through the air inlet pipe; when the digital pressure gauge 4 detects that the internal pressure of the refined titanium tetrachloride storage tank 1 is higher than 3 kpa, the PLC controller controls the pneumatic regulating valve Ⅱ2-2 to open, so that the refined titanium tetrachloride storage tank 1 is depressurized through the air outlet pipe, and argon and gaseous titanium tetrachloride will enter the breathing tank 6, and the titanium tetrachloride gas will be condensed and recovered after contacting the titanium tetrachloride liquid in the tank.

[0036] Furthermore, when the digital pressure gauge 4 monitors that the internal pressure of the refined titanium tetrachloride storage tank 1 is 0.5-3 kPa, the PLC controller controls the pneumatic regulating valve I2-1 and the pneumatic regulating valve II2-2 to close, so that the internal pressure of the refined titanium tetrachloride storage tank 1 can be maintained within the range of 0.5-3 kPa.

[0037] Furthermore, the digital pressure gauge 4 is installed on the top of the refined titanium tetrachloride tank 1 through a flange, and the detection end of the digital pressure gauge 4 extends into the interior of the refined titanium tetrachloride storage tank 1.

[0038] Furthermore, the air inlet pipe and the air outlet pipe are both stainless steel pipes, and the air inlet pipe and the air inlet port, as well as the air outlet pipe and the air outlet port are both connected by flange docking.

[0039] Furthermore, the argon main pipe is provided with the argon flow meter 5 for monitoring the flow rate of argon.

[0040] Furthermore, the argon flowmeter 5 is used to monitor the flow rate of the argon gas delivered from the argon main pipe to the refined titanium tetrachloride storage tank 1 to ensure that the argon gas can be delivered at a set flow rate.

[0041] Furthermore, when there are a plurality of the refined titanium tetrachloride storage tanks 1, they are respectively connected in series with the argon main pipe via the air intake pipeline.

[0042] Furthermore, the breathing ventilation tank 6 is connected to an exhaust gas treatment system for treating the gas not collected by the breathing ventilation tank 6 .

[0043] Furthermore, a manual ball valve 3 is provided on the air intake pipe, which is used to manually control the delivery of argon gas when the pneumatic regulating valve I2-1 fails, thereby playing a certain protective role.

[0044] Furthermore, the pneumatic regulating valve I2-1 and the pneumatic regulating valve II2-2 adopt ZJHRF DN25 / PN16 pneumatic regulating valve; the PLC controller can adopt existing PLC controllers such as Siemens LOGO and S7-200, which will not be repeated here.

[0045] In order to ensure that the refined titanium tetrachloride in the tank is filled with argon protective atmosphere in real time and the pressure in the tank is constant, the automatic argon filling device described in the utility model is used to introduce argon into the tank from the air inlet on the top of the refined titanium tetrachloride storage tank 1. According to the real-time monitoring of the tank pressure by the digital pressure gauge 4, the automatic argon filling and pressure relief valve can be controlled by the PLC controller to control the pressure in the tank, so that the internal pressure of the refined titanium tetrachloride storage tank 1 is continuously and stably within the specified range. When the pressure in the refined titanium tetrachloride storage tank 1 is higher than 3kpa, the excess gas can be condensed and collected through the breathing exchange tank 6, and the uncollected gas is transported to the exhaust gas treatment system.

[0046] The automatic argon filling device for titanium tetrachloride storage tank described in the utility model plays a role of maintaining a constant pressure in the tank by automatically replenishing argon and relieving pressure, thereby maintaining the real-time preservation of the quality of refined titanium tetrachloride in the storage tank, ensuring that the refined titanium tetrachloride in the storage tank is filled with an argon protective atmosphere in real time, isolating the refined titanium tetrachloride in the storage tank from contact with air and causing pollution under the protection of argon, greatly improving the grade rate of refined titanium tetrachloride in the storage tank, and significantly reducing the oxygen and nitrogen contents in the sponge titanium product.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An automatic argon filling device for a titanium tetrachloride storage tank, characterized in that: Including refined titanium tetrachloride storage tank, digital pressure gauge, breathing tank and PLC controller; An air inlet and an air outlet are provided on the top of the refined titanium tetrachloride storage tank; a digital pressure gauge for real-time monitoring of the internal pressure is installed on the top of the refined titanium tetrachloride storage tank; The air inlet is connected to the argon main pipe through an air inlet pipe, and the argon main pipe is used to transport argon to the refined titanium tetrachloride storage tank; the air outlet is connected to the breathing air exchange tank through an air outlet pipe; The air inlet pipeline is provided with a pneumatic regulating valve I; the air outlet pipeline is provided with a pneumatic regulating valve II; the digital pressure gauge, the pneumatic regulating valve I and the pneumatic regulating valve II are electrically connected to the PLC controller respectively, the digital pressure gauge is used to send the monitored internal pressure data of the refined titanium tetrachloride storage tank to the PLC controller, and the PLC controller is used to control the opening and closing of the pneumatic regulating valve I and the pneumatic regulating valve II according to the pressure data; The breathing ventilation tank is filled with titanium tetrachloride liquid, which is used to condense and recover the titanium tetrachloride gas discharged through the outlet pipe when the pressure is released; the end of the outlet pipe is located below the liquid level in the breathing ventilation tank.

2. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1, characterized in that: When the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is lower than 0.5 kpa, the PLC controller controls the pneumatic regulating valve I to open, so that the argon main pipe fills the refined titanium tetrachloride storage tank with argon through the air inlet pipe; when the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is higher than 3 kpa, the PLC controller controls the pneumatic regulating valve II to open, so that the refined titanium tetrachloride storage tank releases pressure through the air outlet pipe.

3. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1 is characterized in that: When the digital pressure gauge monitors that the internal pressure of the refined titanium tetrachloride storage tank is 0.5-3kPa, the PLC controller controls the pneumatic regulating valve I and the pneumatic regulating valve II to close, so that the internal pressure of the refined titanium tetrachloride storage tank can be maintained within the range of 0.5-3kPa.

4. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1 is characterized in that: The digital pressure gauge is installed on the top of the refined titanium tetrachloride tank through a flange, and the detection end of the digital pressure gauge extends into the interior of the refined titanium tetrachloride storage tank.

5. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1 is characterized in that: The air inlet pipe and the air outlet pipe are both stainless steel pipes, and the air inlet pipe and the air inlet port as well as the air outlet pipe and the air outlet port are both connected by flange docking.

6. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1 is characterized in that: The argon gas main pipe is provided with the argon gas flow meter for monitoring the argon gas flow rate.

7. The automatic argon filling device for titanium tetrachloride storage tank according to claim 1 is characterized in that: The air intake pipeline is also provided with a manual ball valve.

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