Device for precipitating vanadium solution

Abstract

The utility model discloses a device for precipitating a vanadium solution. The device comprises a reaction tank body and a pH (Potential of Hydrogen) detection mechanism, wherein the pH detection mechanism comprises a detection tank body, a pH meter, a peristaltic pump and a collection pipe, the collection pipe is communicated with a first end of the peristaltic pump through a first conveying pipeline, and a second end of the peristaltic pump is communicated to a sample inlet of the detection tank body through a second conveying pipeline; the detection end of the pH meter is positioned below the liquid level of the detection tank body; the collecting pipe is arc-shaped and is arranged in the reaction tank body. The pH detection mechanism is arranged, liquid in the reaction tank body is collected through the arc-shaped collecting pipe, the liquid is conveyed into the detection tank body through the peristaltic pump for pH value detection, the accuracy of sampling and detection results is high, and the technical problems that in the prior art, manual detection is poor in accuracy, high in hysteresis quality and the like are solved; and accurate detection can provide reliable guarantee for adjustment of process parameters, and the vanadium precipitation rate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vanadium metallurgy, in particular to a device for precipitation of vanadium solution. Background Art

[0002] High temperature, high humidity, airtightness, strong acid and alkali, relatively airtightness, and strong vibration working environment are the characteristics of the general high-purity vanadium precipitation tank area. In industrial production, the high-purity vanadium precipitation tank is mainly responsible for the aggregation and precipitation of vanadium trioxide in qualified vanadium-containing liquid under the action of catalyst. The solution precipitation process in the vanadium industry generally adopts the operator to collect acid value and temperature information on site, and then the operator performs it according to the sampling post operation standard. However, due to the presence of a scum layer in the precipitation reaction of the vanadium solution, the accuracy of the test results obtained by manual sampling is poor, which leads to the execution results often failing to meet production needs. At the same time, due to the lag of manual detection information and large real-time errors in the actual production process, it is difficult to ensure accuracy, and the timely guidance of process parameter changes in the production process is not strong. This leads to low production efficiency, delayed parameter adjustment during acid value ratio, long reaction time, low vanadium precipitation rate, and poor accuracy and scientificity.

[0003] Based on this, the existing technology still needs to be improved. Utility Model Content

[0004] In order to solve the above technical problems, the embodiment of the utility model proposes a device for vanadium solution precipitation to solve the technical problems of poor accuracy and large hysteresis of pH value detection of vanadium solution precipitation in the prior art.

[0005] In order to solve the above technical problems, some embodiments of the utility model disclose a device for precipitation of vanadium solution, including a reaction tank and a pH detection mechanism;

[0006] Wherein, the pH detection mechanism comprises a detection tank, a pH meter, a peristaltic pump and a collection tube, the collection tube is connected to the first end of the peristaltic pump through a first delivery pipeline, the second end of the peristaltic pump is connected to the sampling port of the detection tank through a second delivery pipeline, and the lower end of the detection tank is connected to the reaction tank through a third delivery pipeline;

[0007] The detection end of the pH meter is located below the liquid level of the detection tank;

[0008] The collection tube is arc-shaped and is arranged in the reaction tank body.

[0009] In some embodiments, the pH detection mechanism also includes a mounting rod, which is inserted from the top of the reaction tank body to below the liquid level of the reaction tank body, and the first end of the collection tube is fixed to the lower end of the mounting rod, so that the collection tube is located below the liquid level in the reaction tank body.

[0010] In some embodiments, a stirring device is further provided in the reaction tank body, and the curvature of the collection tube is equal to the curvature of the arc surface formed by the liquid surface vortex in the reaction tank body;

[0011] Furthermore, the distance between the second end of the collection tube and the center of the reaction tank body is greater than the distance between the first end of the collection tube and the center of the reaction tank body, the height of the second end of the collection tube is higher than the height of the first end of the collection tube, and the vertical projection of the collection tube is located on the diameter of the reaction tank body.

[0012] In some embodiments, the collection pipe is arranged below the scum layer in the reaction tank body;

[0013] And / or, a plurality of collecting holes are evenly arranged on the tube wall of the collecting tube, and a filtering layer is arranged at the first end of the collecting tube;

[0014] And / or, the second end of the collection tube is closed, a strip-shaped collection hole is arranged on the tube wall of the collection tube along the length direction, a plurality of hole-shaped collection holes are arranged at intervals on the strip-shaped collection hole, the aperture of the hole-shaped collection hole is larger than the width of the strip-shaped collection hole, and the center of the hole-shaped collection hole is located on the center line of the strip-shaped collection hole.

[0015] In some embodiments, the pH detection mechanism further includes a lifting mechanism, and the lifting mechanism is connected to the upper end of the mounting rod to drive the mounting rod to move up and down.

[0016] In some embodiments, a radar level meter, a temperature measuring component and an underflow valve are further included. The radar level meter and the temperature measuring component are inserted into the reaction tank body from above the reaction tank body; the underflow valve is arranged at the lower end of the reaction tank body.

[0017] In some embodiments, the first delivery pipe is fixed to the mounting rod by a guide ring.

[0018] In some embodiments, a clean water injection valve and a liquid discharge valve are further provided on the detection tank body. The clean water injection valve is provided at the upper portion of the detection tank body, and the liquid discharge valve is provided at the lower end of the detection tank body.

[0019] In some embodiments, an overflow valve is also provided on the upper portion of the detection tank.

[0020] In some embodiments, a pre-pump valve is disposed at one end of the first delivery pipeline close to the peristaltic pump.

[0021] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0022] The utility model provides a device for vanadium solution precipitation. By setting a pH detection mechanism, an arc-shaped collection tube is used to collect liquid in a reaction tank body, and the liquid is transported to a detection tank body through a peristaltic pump for pH value detection. The sampling and detection results are highly accurate, and the technical problems of poor accuracy and strong hysteresis in the manual inspection of the prior art are solved. Accurate detection and processing can provide reliable guarantee for the adjustment of process parameters, which is conducive to improving the vanadium precipitation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a device for precipitation of vanadium solution disclosed in some embodiments of the utility model;

[0025] Figure 2 A top view of a reaction tank of a device for vanadium solution precipitation disclosed in some embodiments of the utility model;

[0026] Figure 3 The present invention is a schematic structural diagram of a collection tube of a device for vanadium solution precipitation disclosed in some embodiments of the present invention.

[0027] Description of reference numerals:

[0028] 1. Reaction tank; 2. Detection tank; 3. pH meter; 4. Peristaltic pump; 5. Collection tube; 6. First delivery pipeline; 7. Second delivery pipeline; 8. Mounting rod; 9. Lifting mechanism; 10. Pump front valve; 11. Radar level gauge; 12. Temperature measuring component; 13. Bottom flow valve; 14. Clean water injection valve; 15. Drain valve; 16. Stirring device; 17. Strip collection hole; 18. Hole collection hole; 19. Steam valve. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0030] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0031] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0033] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] like Figure 1 , Figure 2 , Figure 3 As shown, some embodiments of the utility model disclose a device for precipitation of vanadium solution, comprising a reaction tank body 1 and a pH detection mechanism; wherein the pH detection mechanism comprises a detection tank body 2, a pH meter 3, a peristaltic pump 4 and a collection tube 5, wherein the collection tube 5 is connected to the first end of the peristaltic pump 4 through a first delivery pipe 6, the second end of the peristaltic pump 4 is connected to the sampling port of the detection tank body 2 through a second delivery pipe 7, and the lower end of the detection tank body is connected to the reaction tank body through a third delivery pipe; the detection end of the pH meter 3 is located below the liquid level of the detection tank body 2; the collection tube 5 is arc-shaped and is arranged in the reaction tank body 1.

[0037] In this embodiment, when pH value detection is required, the peristaltic pump 4 is started, the corresponding valve is opened, and the collection tube 5, under the power of the peristaltic pump 4, absorbs the liquid in the reaction tank body 1 and transports it to the detection tank body 2. The pH meter 3 in the detection tank body 2 performs detection to obtain the detection result. The lower end of the detection tank body is connected to the reaction tank body through a third delivery pipeline, so that the detection liquid flows back to the reaction tank body after the detection is completed, so that the detection liquid forms an external circulation outside the reaction tank body. In addition, after continuous online detection for a predetermined time, the detection tank body 2 can be rinsed to prepare for the next detection. By setting up a pH detection mechanism, an arc-shaped collection tube 5 is used to collect the liquid in the reaction tank body 1, and it is transported to the detection tank body 2 through the peristaltic pump 4 for pH value detection. The sampling and detection results are highly accurate, which solves the technical problems of poor accuracy and strong hysteresis in the manual inspection of the prior art. The accurate detection results can provide a reliable guarantee for the adjustment of process parameters, which is conducive to improving the vanadium precipitation rate.

[0038] Some embodiments of the utility model also disclose a device for precipitation of vanadium solution. On the basis of the above embodiments, the pH detection mechanism further comprises a mounting rod 8, wherein the mounting rod 8 is inserted from the top of the reaction tank body 1 to below the liquid level of the reaction tank body 1, and the first end of the collection tube 5 is fixed to the lower end of the mounting rod 8, so that the collection tube 5 is located below the liquid level in the reaction tank body 1. Generally, the height of the mounting rod 8 can be adjusted according to the liquid level height in the reaction tank body 1, so that the collection tube 5 collects a solution that meets the detection requirements, thereby ensuring the accuracy of the detection result.

[0039] During the precipitation process, a stirring device 16 should also be provided in the reaction tank body 1. Due to the presence of the stirring device 16, a vortex is formed on the liquid surface in the reaction tank body. In order to ensure that the collected liquid can meet the detection requirements, generally, the curvature of the collection tube 5 can be set to be equal to the curvature of the arc surface formed by the vortex of the liquid surface in the reaction tank body 1; and the distance between the second end of the collection tube 5 and the center of the reaction tank body 1 is greater than the distance between the first end of the collection tube 5 and the center of the reaction tank body 1, the height of the second end of the collection tube 5 is higher than the height of the first end of the collection tube 5, and the vertical projection of the collection tube 5 is located on the diameter of the reaction tank body 1. At the same time, it is necessary to ensure that the collection tube 5 is set lower than the scum layer in the reaction tank body 1; generally, a plurality of collection holes are evenly arranged on the tube wall of the collection tube 5, and a filter layer is arranged at the first end of the collection tube 5. In this way, it can be ensured that the solution collected by the collection tube 5 can represent the immediate state of the reaction solution, and avoid collecting the scum layer and affecting the detection results. At the same time, by arranging a filter layer at the first end of the collection tube 5, the peristaltic pump 4 can be effectively protected to avoid damage to the peristaltic pump 4, and the influence of residues on the detection results can be effectively avoided.

[0040] like Figure 3 As shown, the collection tube 5 can also be configured to be connected at the first end and provided with a filter screen, and closed at the second end. At the same time, in order to achieve solution collection, a strip-shaped collection hole is provided on the tube wall of the collection tube 5 along the length direction, and a plurality of hole-shaped collection holes 18 are arranged at intervals on the strip-shaped collection hole. The aperture of the hole-shaped collection hole 18 is greater than the width of the strip-shaped collection hole 17, and the center of the hole-shaped collection hole 18 is located on the center line of the strip-shaped collection hole 17. This structural setting can achieve rapid solution collection and effectively ensure the rigidity of the collection tube 5. The interval setting of the hole-shaped collection holes 18 can also increase the solution collection area and improve the collection rate. The setting of the filter screen can effectively prevent impurities from entering and avoid adverse effects on the pH test results, which is conducive to the accuracy and stability of the test results.

[0041] Some embodiments of the utility model disclose a device for precipitation of vanadium solution. On the basis of the above embodiments, in order to meet the sampling requirements in the reaction tank body 1 with different liquid level heights and to protect the sampling tube after the detection is completed, the pH detection mechanism also includes a lifting mechanism 9, and the lifting mechanism 9 is connected to the upper end of the mounting rod 8 to drive the mounting rod 8 to move up and down. The lifting mechanism 9 can be a lifting cylinder, and the lower end of the cylinder arm of the lifting cylinder is connected to the upper end of the mounting rod 8, and the two can be connected by a connecting sleeve or direct welding. Since the first delivery pipeline 6 is generally a soft or flexible pipeline, the first delivery pipeline 6 can be fixed to the mounting rod 8 by a guide ring. Specifically, one or more guide rings of annular structure can be welded on the mounting rod 8, and the first delivery pipeline 6 passes through the guide ring. The upper end of the collection tube 5 can be fixed to the lower end of the mounting rod 8 by a buckle or a slot. For example, a mounting portion can be fixed at the lower end of the mounting rod 8, and a slot is provided on the mounting portion. The slot is adapted to the upper end of the collection tube 5, so that the upper end of the collection tube 5 can be inserted into the slot for fixation. An internal thread can also be formed on the mounting portion, and the upper end of the collection tube 5 is provided with an external thread, and a fixed connection is achieved by a threaded connection. The material of the collection tube 5 needs to be selected from acid, alkali and high temperature resistant materials that do not react with the reaction solution.

[0042] A device for precipitation of vanadium solution disclosed in some embodiments of the utility model, on the basis of the above embodiments, further comprises a radar level gauge 11, a temperature measuring component 12, a steam valve 19 and an underflow valve 13, wherein the radar level gauge 11 and the temperature measuring component 12 are inserted into the reaction tank body 1 from above the reaction tank body 1; the underflow valve 13 is arranged at the lower end of the reaction tank body 1. The steam valve 19 is arranged at the upper end of the reaction tank body 1, and is mainly used for pressure control in the reaction tank body. The lifting cylinder can be adjusted based on the liquid level measured by the radar level gauge 11, so as to ensure that the collection pipe 5 is at a suitable height.

[0043] Some embodiments of the utility model disclose a device for precipitation of vanadium solution. On the basis of the above embodiments, in order to ensure the accuracy of pH value detection and avoid the influence of the residue of the previous measurement on the next measurement result, it is necessary to clean the detection tank body 2. Specifically, a clean water injection valve 14 and a drain valve 15 can be set on the detection tank body 2. The clean water injection valve 14 is set on the upper part of the detection tank body 2, and the drain valve 15 is set at the lower end of the detection tank body 2. The cleaning water can be returned to the reaction tank body through the third delivery pipeline, or it can be discharged by the drain valve. Specifically, when performing the tank cleaning operation, after the previous detection liquid is discharged through the drain valve 15, the clean water injection valve 14 can be opened, and clean water can be injected for multiple washings. After the washing is completed, the drain valve 15 can be opened to discharge the residual liquid. The detection liquid in the detection tank body 2 can also be reversely refluxed into the reaction tank body 1 through the third delivery pipeline. After the reaction is completed, open the clean water injection valve 14 to inject clean water for washing. After each washing is completed, the washing liquid is continuously pumped back into the reaction tank body 1. Since the capacity of the detection tank body 2 is extremely small, a small amount of washing water pumped back to the reaction tank body 1 will not have a significant impact on the entire reaction. A stirring device 16 can also be provided on the upper part of the detection tank body 2 to avoid the adverse effects caused by excessive pumping of solution or excessive injection of clean water. In addition, a pre-pump valve 10 can be provided at one end of the first delivery pipeline 6 close to the peristaltic pump 4 to further improve the safety of the detection.

[0044] In summary, the device for vanadium solution precipitation disclosed in the embodiment of the utility model can improve the accuracy of the detection element, make it scale-free or less scale-free, and have strong authenticity. It can timely reflect the process parameters such as the liquid level, temperature, and acid value of the vanadium solution, and realize rapid and accurate guidance of the setting of vanadium precipitation process parameters. Make the process parameter adjustment more scientific and authentic. Through the online mobile detection element and the scale-free collection tube, and the acid value tracking and calibration of the pH meter during the vanadium precipitation process, the process parameters such as the temperature, acid value, and ammonium-vanadium ratio of the vanadium solution are objectively, truly, accurately, and dynamically detected, so as to realize rapid and accurate guidance of the setting of vanadium precipitation process parameters and improve production efficiency. The vanadium precipitation rate reaches 99.8%. By accurately monitoring the acid value, the ammonium-vanadium ratio is further reduced to 0.2-0.45, which reduces the wastewater treatment cost of the next process. The specific gravity of the polyvanadate ammonium pile is greater than 0.75 / cm 3 Improve the vanadium yield. The utility model is easy to operate, has a wide range of applications, low cost, and has good social and economic benefits. So far, the various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0045] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A device for precipitation of vanadium solution, characterized in that: It includes a reaction tank and a pH detection mechanism; Wherein, the pH detection mechanism comprises a detection tank, a pH meter, a peristaltic pump and a collection tube, the collection tube is connected to the first end of the peristaltic pump through a first delivery pipeline, the second end of the peristaltic pump is connected to the sampling port of the detection tank through a second delivery pipeline, and the lower end of the detection tank is connected to the reaction tank through a third delivery pipeline; The detection end of the pH meter is located below the liquid level of the detection tank; The collection tube is arc-shaped and is arranged in the reaction tank body.

2. The device for precipitation of vanadium solution according to claim 1, characterized in that: The pH detection mechanism also includes a mounting rod, which is inserted from the top of the reaction tank body to below the liquid level of the reaction tank body. The first end of the collection tube is fixed to the lower end of the mounting rod so that the collection tube is located below the liquid level in the reaction tank body.

3. The device for precipitation of vanadium solution according to claim 2, characterized in that: The reaction tank body is also provided with a stirring device, and the curvature of the collection tube is equal to the curvature of the arc surface formed by the liquid surface vortex in the reaction tank body; Furthermore, the distance between the second end of the collection tube and the center of the reaction tank body is greater than the distance between the first end of the collection tube and the center of the reaction tank body, the height of the second end of the collection tube is higher than the height of the first end of the collection tube, and the vertical projection of the collection tube is located on the diameter of the reaction tank body.

4. The device for precipitation of vanadium solution according to claim 2 or 3, characterized in that: The collection pipe is arranged below the scum layer in the reaction tank body; And / or, a plurality of collecting holes are evenly arranged on the tube wall of the collecting tube, and a filtering layer is arranged at the first end of the collecting tube; And / or, the second end of the collection tube is closed, a strip-shaped collection hole is arranged on the tube wall of the collection tube along the length direction, a plurality of hole-shaped collection holes are arranged at intervals on the strip-shaped collection hole, the aperture of the hole-shaped collection hole is larger than the width of the strip-shaped collection hole, and the center of the hole-shaped collection hole is located on the center line of the strip-shaped collection hole.

5. The device for precipitation of vanadium solution according to claim 2 or 3, characterized in that: The pH detection mechanism also includes a lifting mechanism, and the lifting mechanism is connected to the upper end of the installation rod to drive the installation rod to move up and down.

6. The device for precipitation of vanadium solution according to claim 1, characterized in that: It also includes a radar level meter, a temperature measuring component and an underflow valve. The radar level meter and the temperature measuring component are inserted into the reaction tank body from above the reaction tank body; the underflow valve is arranged at the lower end of the reaction tank body.

7. The device for precipitation of vanadium solution according to claim 2, characterized in that: The first delivery pipe is fixed on the mounting rod by a guide ring.

8. The device for precipitation of vanadium solution according to claim 1, characterized in that: The detection tank body is also provided with a clean water injection valve and a liquid discharge valve. The clean water injection valve is arranged at the upper part of the detection tank body, and the liquid discharge valve is arranged at the lower end of the detection tank body.

9. The device for precipitation of vanadium solution according to claim 1, characterized in that: An overflow valve is also arranged on the upper part of the detection tank.

10. The device for precipitation of vanadium solution according to claim 1, characterized in that: A pre-pump valve is disposed at one end of the first delivery pipeline close to the peristaltic pump.

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