A feeding device for refining titanium tetrachloride

Abstract

The utility model discloses a kind of feeding devices for refining titanium tetrachloride, it is related to chemical equipment technical field, including mineral oil storage tank, for storing high viscosity mineral oil, the outside of mineral oil storage tank is equipped with steam jacket, steam inlet and steam outlet are equipped on the steam jacket;Coarse titanium storage tank, for storing coarse titanium tetrachloride;Mixing tank, the discharge outlet of mineral oil storage tank is communicated with the mixing tank by feeding assembly, the discharge outlet of coarse titanium storage tank is communicated with the mixing tank by first material transmission pipeline, the mixing tank is communicated with the feed inlet of rectification system by second material transmission pipeline, the second material transmission pipeline is used to send coarse titanium tetrachloride-mineral oil mixed solution into the rectification system.Upper described feeding device for refining titanium tetrachloride, realizes the technical effect of improving refining efficiency and product quality, reduces pipeline jamming risk, guarantees the stable operation of production.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a feeding device for refining titanium tetrachloride. Background Technology

[0002] In the field of titanium chemistry, titanium tetrachloride is a key intermediate carrier for the production of sponge titanium and titanium dioxide, and its quality directly affects the performance and quality of the final product.

[0003] In the refining process of crude titanium tetrachloride, the use of high-viscosity mineral oil for vanadium removal has significant advantages, including low reagent consumption and high vanadium removal efficiency. However, in actual production, it has been found that although high-viscosity mineral oil has excellent vanadium removal performance, its physical properties also bring many operational challenges:

[0004] Due to its high viscosity and poor fluidity at room temperature, it can easily cause blockage in the feeding pipes, resulting in abnormal situations such as improper feeding, which in turn affects production efficiency and may also have an adverse impact on product quality.

[0005] Therefore, how to provide a feeding device for refining titanium tetrachloride to improve production efficiency is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a feeding device for refining titanium tetrachloride, which solves the technical problem that existing feeding devices cannot stably convey materials.

[0007] To achieve the above objectives, this utility model provides a feeding device for refining titanium tetrachloride, comprising:

[0008] A mineral oil storage tank for storing high-viscosity mineral oil, wherein the outer side of the mineral oil storage tank is provided with a steam jacket, and the steam jacket is provided with a steam inlet and a steam outlet;

[0009] Crude titanium storage tank, used to store crude titanium tetrachloride;

[0010] The mixing tank is connected to the outlet of the mineral oil storage tank via a feeding assembly. The outlet of the crude titanium storage tank is connected to the mixing tank via a first material transfer pipeline. The mixing tank is connected to the inlet of the distillation system via a second material transfer pipeline. The second material transfer pipeline is used to transport the crude titanium tetrachloride-mineral oil mixture to the distillation system.

[0011] Preferably, the feeding assembly includes:

[0012] The first and second feeding branches are arranged in parallel. The first ends of the first and second feeding branches are connected to the outlet of the mineral oil storage tank through the discharge pipe, and the second ends are connected to the mixing tank through the feed pipe.

[0013] The first and second feeding branches are each equipped with a regulating valve, a plunger pump, and a flow meter in sequence along the material flow direction.

[0014] Preferably, the end of the feed pipe is provided with a submersible discharge port, which is always located below the liquid level of the mixing tank.

[0015] Preferably, it also includes a DCS control system, which establishes a signal connection with the regulating valve, the plunger pump and the flow meter to regulate the feed flow rate and speed of the mineral oil.

[0016] Preferably, the mixing tank is equipped with a level gauge, which establishes a signal connection with the DCS control system.

[0017] Preferably, the feed pipe is provided with a nitrogen purging branch pipe, and the nitrogen purging branch pipe is provided with a control valve, which establishes a signal connection with the DCS control system.

[0018] Preferably, the mixing tank is equipped with a stirring device to achieve mixing of crude titanium tetrachloride and mineral oil.

[0019] Preferably, the second material transfer pipeline is equipped with a filter.

[0020] Preferably, both the first material transfer pipeline and the second material transfer pipeline are connected to a feed pump.

[0021] Preferably, the outer wall of the steam jacket is covered with a heat insulation layer.

[0022] Compared to the aforementioned background technology, this utility model provides a feeding device for refining titanium tetrachloride. A steam jacket is installed outside the mineral oil storage tank. High-temperature steam flows within the jacket, transferring heat to the mineral oil in the storage tank, causing its temperature to rise and its viscosity to decrease. The feeding assembly ensures that the mineral oil is stably and uniformly delivered to the mixing tank. Simultaneously, the outlet of the crude titanium storage tank is connected to the mixing tank via a first material transfer pipe, allowing the high-viscosity mineral oil and crude titanium tetrachloride to be thoroughly mixed in the mixing tank within a short time, forming a uniform crude titanium tetrachloride-mineral oil mixture. A second material transfer pipe then transports the crude titanium tetrachloride-mineral oil mixture to the distillation system for refining the titanium tetrachloride.

[0023] This application provides a feeding device for refining titanium tetrachloride, which increases the temperature and decreases the viscosity of mineral oil, facilitating transportation, and ensuring uniform mixing with crude titanium tetrachloride, thereby improving refining efficiency and product quality, reducing the risk of pipeline blockage, and ensuring stable production operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a feeding device for refining titanium tetrachloride, provided in an embodiment of the present invention.

[0026] in:

[0027] 1-Mineral oil storage tank, 2-Steam jacket, 3-Steam inlet, 4-Steam outlet, 5-Crude titanium storage tank, 6-Mixing tank, 7-Distillation system, 8-First feeding branch, 9-Second feeding branch, 10-Discharge pipe, 11-Infeed pipe, 12-Regulating valve, 13-Plunger pump, 14-Flow meter, 15-Submerged discharge port, 16-DCS control system, 17-Nitrogen purging branch pipe. Detailed Implementation

[0028] 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.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figure 1This application provides a feeding device for refining titanium tetrachloride, comprising a mineral oil storage tank 1 for storing high-viscosity mineral oil, a steam jacket 2 on the outside of the mineral oil storage tank 1, a steam inlet 3 and a steam outlet 4 on the steam jacket 2; a crude titanium storage tank 5 for storing crude titanium tetrachloride; and a mixing tank 6. The outlet of the mineral oil storage tank 1 is connected to the mixing tank 6 through a feeding assembly, the outlet of the crude titanium storage tank 5 is connected to the mixing tank 6 through a first material transfer pipe, and the mixing tank 6 is connected to the inlet of a distillation system 7 through a second material transfer pipe, the second material transfer pipe being used to transport the crude titanium tetrachloride-mineral oil mixture to the distillation system 7.

[0031] In other words, to ensure the mineral oil maintains good fluidity at a suitable temperature for smooth feeding, a steam jacket 2 is installed on the outside of the mineral oil storage tank 1. The steam jacket 2 is tightly fitted to the outer wall of the mineral oil storage tank 1, forming a closed heating space. The steam jacket 2 is equipped with a steam inlet 3 and a steam outlet 4. High-temperature steam is introduced into the jacket through the steam inlet 3. As the high-temperature steam flows within the jacket, it transfers heat to the mineral oil in the mineral oil storage tank 1, causing its temperature to rise and its viscosity to decrease. The steam outlet 4 is used to discharge the steam that has released heat and cooled down, ensuring a continuous supply of high-temperature steam within the steam jacket 2 to maintain a stable heating effect. In addition, to further improve insulation performance and reduce heat loss, the outer wall of the steam jacket 2 is also covered with a high-efficiency heat insulation layer, effectively reducing energy consumption and improving heating efficiency.

[0032] Crude titanium storage tank 5 is used to store crude titanium tetrachloride. Its tank body has good sealing and corrosion resistance, which can safely and reliably store crude titanium tetrachloride and prevent it from leaking and deteriorating.

[0033] The purpose of mixing tank 6 is to achieve thorough mixing of high-viscosity mineral oil and crude titanium tetrachloride. The outlet of mineral oil storage tank 1 is connected to mixing tank 6 via a feeding assembly, which ensures stable and uniform delivery of mineral oil to mixing tank 6. Simultaneously, the outlet of crude titanium storage tank 5 is connected to mixing tank 6 via a first material transfer pipe. Inside mixing tank 6, a stirring device is installed, which enables the high-viscosity mineral oil and crude titanium tetrachloride to be thoroughly mixed in a short time, forming a uniform crude titanium tetrachloride-mineral oil mixture. Mixing tank 6 is tightly connected to the inlet of distillation system 7 via a second material transfer pipe, which transports the crude titanium tetrachloride-mineral oil mixture to distillation system 7 for titanium tetrachloride refining.

[0034] This application provides a feeding device for refining titanium tetrachloride, which increases the temperature and decreases the viscosity of mineral oil, facilitating transportation, and ensuring uniform mixing with crude titanium tetrachloride, thereby improving refining efficiency and product quality, reducing the risk of pipeline blockage, and ensuring stable production operation.

[0035] Based on the above embodiments, the feeding assembly includes a first feeding branch 8 and a second feeding branch 9 arranged in parallel. The first ends of the first feeding branch 8 and the second feeding branch 9 are connected to the outlet of the mineral oil storage tank 1 through the discharge pipe 10, and the second ends are connected to the mixing tank 6 through the inlet pipe 11. The first feeding branch 8 and the second feeding branch 9 are each provided with a regulating valve 12, a plunger pump 13 and a flow meter 14 in sequence along the material flow direction.

[0036] In other words, the first ends of the first feeding branch 8 and the second feeding branch 9 are both closely connected to the outlet of the mineral oil storage tank 1 through the discharge pipe 10, ensuring that the mineral oil can smoothly enter the feeding branch from the mineral oil storage tank 1. The second ends are both stably connected to the mixing tank 6 through the inlet pipe 11, ensuring that the mineral oil can be accurately delivered to the mixing tank 6 to achieve mixing with crude titanium tetrachloride.

[0037] On the first feeding branch 8 and the second feeding branch 9, a regulating valve 12, a plunger pump 13, and a flow meter 14 are sequentially arranged along the material flow direction. Operators can adjust the opening of the regulating valve 12 according to actual production needs, thereby controlling the flow rate of mineral oil entering the corresponding branch and meeting production requirements under different operating conditions. The plunger pump 13 provides sufficient power for high-viscosity mineral oil, ensuring its smooth flow within the pipeline and effectively overcoming the flow resistance problem caused by high viscosity, thus guaranteeing the continuity and stability of feeding. The flow meter 14 can measure the flow rate of mineral oil passing through this branch in real time and accurately.

[0038] Based on the above embodiments, the end of the feed pipe 11 is provided with a submersible discharge port 15, which is always located below the liquid level of the mixing tank 6.

[0039] Specifically, when high-viscosity mineral oil is conveyed to the submerged discharge port 15 through the feed pipe 11, because the discharge port is below the liquid level, the mineral oil will be released into the liquid in the mixing tank 6 at a relatively stable and uniform rate under the static pressure of the surrounding liquid. This avoids direct contact between the mineral oil and air, effectively reducing the oxidation reaction of the mineral oil during the feeding process, thus ensuring the chemical stability of the mineral oil and ensuring that its vanadium removal effect is not affected. At the same time, it also prevents the mineral oil from absorbing moisture or other impurities that may be caused by exposure to air, further improving product quality.

[0040] Based on the above embodiments, a DCS (Distributed Control System) 16 is also included. The DCS 16 establishes a signal connection with the regulating valve 12, the plunger pump 13, and the flow meter 14 to regulate the feed flow rate and speed of mineral oil, control the start and stop of the regulating valve 12, the plunger pump 13, and the flow meter 14, control the opening degree of the regulating valve 12 to 60~70%, control the feed speed of the plunger pump 13 to 9~10 kg / h, and monitor the flow rate of the mineral oil during the feed process. On the one hand, it monitors whether oil is added, and on the other hand, it compares with the feed speed of the plunger pump. By controlling the opening degree of the regulating valve, the flow fluctuation during the feed process is reduced.

[0041] In actual operation, the DCS control system 16 can stably control the opening of the regulating valve 12 within the range of 60-70% according to preset process parameters and production requirements. For the plunger pump 13, the DCS control system 16 will control its feeding rate at 9-10 kg / h. In addition, the DCS control system 16 will also record and statistically analyze the running time and cumulative feeding amount of the plunger pump 13.

[0042] The flow meter 14 can monitor the flow rate of mineral oil during the feeding process in real time and accurately. On one hand, monitoring the flow rate can determine whether the mineral oil is being added to the mixing tank 6 normally. If the flow meter 14 detects a flow rate of zero or abnormally low, it indicates that the mineral oil may not be being added normally, and the DCS control system 16 will remind the operator to check for blockages in the feeding components and whether the mineral oil storage tank 1 is low on material. On the other hand, the flow meter 14 will feed back the real-time monitored flow data to the DCS control system 16. The DCS control system 16 will compare and analyze the flow data with the preset feeding speed of the plunger pump 13. If a deviation is found, it indicates that flow fluctuations have occurred during the feeding process. At this time, the DCS control system 16 will automatically adjust the opening of the regulating valve 12 according to the magnitude and direction of the deviation, thereby adjusting the flow rate of the mineral oil by changing the resistance in the pipeline, effectively reducing flow fluctuations during the feeding process and ensuring the stability and uniformity of mineral oil feeding.

[0043] Based on the above embodiments, the mixing tank 6 is equipped with a level gauge, which establishes a signal connection with the DCS control system 16 to ensure that the submersible outlet 15 of the feed pipe 11 is always below the level of the mixing tank 6.

[0044] A level gauge is installed on the side wall of the mixing tank 6 to ensure a comprehensive and accurate reflection of the actual liquid level inside the tank. A signal connection is established between the level gauge and the DCS control system 16. After receiving the level data transmitted by the level gauge, the DCS control system 16 immediately compares and analyzes it in real time with the preset safe level range. When the level data approaches the lower limit of the safe level range, the opening of the regulating valve 12 and the operating speed of the plunger pump 13 are controlled to replenish mineral oil into the mixing tank 6, gradually raising the level to the safe range. Conversely, when the level data approaches the upper limit of the safe level range, the feeding of raw materials into the mixing tank 6 is stopped, thereby ensuring that the submersible outlet 15 of the feed pipe 11 is always below the liquid level in the mixing tank 6.

[0045] Based on the above embodiments, a nitrogen purging branch pipe 17 is provided on the feed pipe 11, and a control valve is provided on the nitrogen purging branch pipe 17. The control valve establishes a signal connection with the DCS control system 16.

[0046] Specifically, the connection between the nitrogen purging branch pipe 17 and the feed pipe 11 must ensure a good seal at the connection point and no risk of leakage, thereby ensuring that nitrogen can be blown into the feed pipe 11. A control valve is installed on the nitrogen purging branch pipe 17. This control valve is an electric regulating valve that can quickly act after receiving instructions from the DCS control system 16, and promptly open or close the nitrogen purging branch pipe 17, or adjust the nitrogen flow rate.

[0047] During production, the DCS control system 16 controls the operation of the control valve on the nitrogen purging branch pipe 17 according to different working conditions and operational stages. For example, before feeding begins, to ensure that there is no residual air or impurities in the feed pipe 11, the DCS control system 16 issues a command to open the control valve, allowing nitrogen to enter the feed pipe 11 at a certain flow rate and pressure for purging. The purging time is preset according to the pipe length and actual conditions.

[0048] When the feeding process is proceeding normally, the DCS control system 16 will adjust the opening of the control valve appropriately according to the material flow rate to control the flow rate of nitrogen, so that it plays an auxiliary role in conveying materials and prevents materials from getting blocked in the pipeline.

[0049] After feeding is completed, in order to prevent material from remaining and solidifying in the feed pipe 11, the DCS control system 16 will open the control valve again and use nitrogen to thoroughly purge the pipe, blowing all the remaining material into the mixing tank 6. After purging, the control valve will be closed to complete the entire feeding and purging process.

[0050] Based on the above embodiments, a filter is provided on the second material transmission pipeline, and a feeding pump is connected to both the first and second material transmission pipelines.

[0051] In other words, the filter installed on the second material transfer pipeline can intercept impurities and ensure product quality; both the first and second material transfer pipelines are connected to a feed pump, thereby ensuring stable material transfer.

[0052] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0053] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A feeding device for refining titanium tetrachloride, characterized in that, include: A mineral oil storage tank (1) is used to store high-viscosity mineral oil. The outer side of the mineral oil storage tank (1) is provided with a steam jacket (2). The steam jacket (2) is provided with a steam inlet (3) and a steam outlet (4). Crude titanium storage tank (5) is used to store crude titanium tetrachloride; The mixing tank (6) is connected to the discharge port of the mineral oil storage tank (1) through a feeding assembly. The discharge port of the crude titanium storage tank (5) is connected to the mixing tank (6) through a first material transmission pipeline. The mixing tank (6) is connected to the inlet of the distillation system (7) through a second material transmission pipeline. The second material transmission pipeline is used to transport the crude titanium tetrachloride-mineral oil mixture to the distillation system (7).

2. The feeding device for refining titanium tetrachloride according to claim 1, characterized in that, The feeding assembly includes: The first feeding branch (8) and the second feeding branch (9) are arranged in parallel. The first end of the first feeding branch (8) and the second feeding branch (9) are connected to the outlet of the mineral oil storage tank (1) through the discharge pipe (10), and the second end of the second feeding branch (9) are connected to the mixing tank (6) through the inlet pipe (11). In this process, the first feeding branch (8) and the second feeding branch (9) are each provided with a regulating valve (12), a plunger pump (13) and a flow meter (14) in sequence along the material flow direction.

3. The feeding device for refining titanium tetrachloride according to claim 2, characterized in that, The feed pipe (11) is provided with a submersible discharge port (15) at the end, and the submersible discharge port (15) is always located below the liquid level of the mixing tank (6).

4. The feeding device for refining titanium tetrachloride according to claim 3, characterized in that, It also includes a DCS control system (16), which establishes a signal connection with the regulating valve (12), the plunger pump (13) and the flow meter (14) to regulate the feed flow rate and speed of mineral oil.

5. The feeding device for refining titanium tetrachloride according to claim 4, characterized in that, The mixing tank (6) is equipped with a level gauge and establishes a signal connection with the DCS control system (16).

6. The feeding device for refining titanium tetrachloride according to claim 5, characterized in that, The feed pipe (11) is provided with a nitrogen purging branch pipe (17), and the nitrogen purging branch pipe (17) is provided with a control valve. The control valve establishes a signal connection with the DCS control system (16).

7. The feeding device for refining titanium tetrachloride according to any one of claims 2-6, characterized in that, The mixing tank (6) is equipped with a stirring device to achieve the mixing of crude titanium tetrachloride and mineral oil.

8. The feeding device for refining titanium tetrachloride according to claim 7, characterized in that, The second material transfer pipeline is equipped with a filter.

9. The feeding device for refining titanium tetrachloride according to claim 8, characterized in that, Both the first material transfer pipeline and the second material transfer pipeline are connected to a feed pump.

10. The feeding device for refining titanium tetrachloride according to claim 9, characterized in that, The outer wall of the steam jacket (2) is covered with a heat insulation layer.

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