A wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst

Abstract

The present invention provides a wastewater treatment equipment for vanadium catalyst sulfuric acid catalyst production, which relates to the field of water treatment technology, including: an acid treatment pipeline, the acid treatment pipeline includes a main line, an acid adding and mixing device, the acid adding and mixing device is installed at intervals on the main line, so as to add acid solution to the vanadium catalyst wastewater in the main line in sequence along the radial direction of the main line, and stir and mix during the adding process; a precipitation pipeline, the precipitation pipeline is connected to the downstream of the main line, and the reduced vanadium pentoxide reaching a preset amount is isolated and discharged; and a reduction treatment pipeline, the reduction treatment pipeline is connected to the downstream of the precipitation pipeline, and the reduction treatment pipeline is arranged obliquely, so that after adding a reducing agent, the reduced vanadium pentoxide slides into the precipitation pipeline along the oblique direction of the reduction treatment pipeline. The wastewater treatment equipment provided by the present invention can effectively realize the uniform treatment of wastewater with acid solution, and after being reduced to vanadium pentoxide, can realize efficient precipitation recovery.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst. Background Art

[0002] Vanadium catalyst is a catalyst. A catalyst that produces catalytic action through surface contact is also called a catalyst or contact agent. Vanadium catalysts usually contain 5% to 10% vanadium pentoxide (V2O5), which is the main component with catalytic activity. In addition to vanadium pentoxide, the catalyst also contains potassium oxide (K2O) or sodium oxide (Na2O) as a co-catalyst to increase the activity of the vanadium catalyst. Diatomaceous earth (most of which is silicon dioxide) is used as a carrier to increase the surface area of ​​the active components of the catalyst in contact with the gas. Some vanadium catalysts also contain substances such as tin oxide, antimony oxide, iron oxide and aluminum oxide.

[0003] In the existing vanadium catalyst wastewater treatment process, the vanadate is first treated with an acid solution such as ammonium chloride, and then the vanadate is further reduced to a more stable vanadium pentoxide using a reducing agent. However, in the acid treatment process, due to the large amount of wastewater, it is difficult to efficiently realize the conversion of wastewater to vanadate, and it is also not convenient to realize the rapid and efficient recovery of the precipitate after the vanadate is generated. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a wastewater treatment device for vanadium catalyst sulfuric acid catalyst production, which is used to solve the problem that in the prior art, after the vanadium catalyst wastewater is treated with an acid solution such as ammonium chloride to form vanadate, the vanadate is further reduced to a more stable vanadium pentoxide by using a reducing agent. In the acid solution treatment process, due to the large amount of wastewater, it is difficult to efficiently realize the conversion of wastewater to vanadate, and it is not convenient to realize the rapid and efficient recovery of precipitation after the vanadate is generated.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a wastewater treatment equipment for vanadium catalyst sulfuric acid catalyst production, comprising: an acid treatment pipeline, the acid treatment pipeline comprising a main line and an acid adding and mixing device, the acid adding and mixing device being installed at intervals on the main line to sequentially add acid liquid to the vanadium catalyst wastewater in the main line along the radial direction of the main line, and stirring and mixing during the adding process; a sedimentation pipeline, the sedimentation pipeline is connected to the downstream of the main line, and the reduced vanadium pentoxide reaching a preset amount is isolated and discharged; and a reduction treatment pipeline, the reduction treatment pipeline is connected to the downstream of the precipitation pipeline, and the reduction treatment pipeline is arranged obliquely, so that after the reducing agent is added, the reduced vanadium pentoxide slides into the sedimentation pipeline along the oblique direction of the reduction treatment pipeline.

[0006] In one embodiment of the present invention, the acid adding and mixing device includes: a rotating seat, which is rotatably installed on the main line, and the outside of the rotating seat is connected to a sealing tube; a driving assembly, which is installed on the main line, and the power output end of the driving assembly is transmission-connected to the rotating seat; a feeding pipe, which is movably inserted on the rotating seat and located in the sealing tube, and the feeding pipe is provided with discharge holes at intervals along its length direction; a feeding cavity, which is connected to the sealing tube outside the rotating seat to transport acid from the sealing tube to the feeding pipe; and an adjusting assembly, which is arranged in the rotating seat, and the power output end of the adjusting assembly is connected to the end of the feeding pipe to drive the feeding pipe to extend and retract along the sealing tube to adjust the number of discharge holes for adding acid along the rotating seat.

[0007] In one embodiment of the present invention, the driving assembly includes: a mounting seat, which is mounted on the main pipeline; a first gear, which is arranged on one side of the mounting seat and is transmission-connected to the rotating seat; a driving motor, which is mounted on the mounting seat and the power output end of the driving motor is connected to the first gear.

[0008] In one embodiment of the present invention, a toothed disc meshing with the first gear is disposed on the rotating seat, and the toothed disc is circumferentially sleeved on the outer wall of the rotating seat.

[0009] In one embodiment of the present invention, the diameters of the discharge holes decrease successively along the length direction of the feed pipe, and the diameter of a group of discharge holes close to the central axis of the main feed line is the smallest.

[0010] In one embodiment of the present invention, the adjustment component includes: a bracket, which is connected to a rotating seat; an adjustment motor, which is installed on the bracket, and a connecting piece is circumferentially provided on the power output end of the adjustment motor, and the connecting piece is movably connected to the end of the feeding pipe; and a stirring rod, which is connected to the power output end of the adjustment motor.

[0011] In one embodiment of the present invention, the feeding pipe is a soft pipe, and a sealing gasket is provided between the outer wall of one end of the feeding pipe and the inner wall of the sealing pipe.

[0012] In one embodiment of the present invention, the precipitation pipeline includes: a V-shaped tube, one end of the V-shaped tube is movably connected to the acid treatment pipeline, the other end of the V-shaped tube is movably connected to the reduction treatment pipeline, and the lower end of the V-shaped tube is connected to the discharge pipe; a drive unit, the drive unit is respectively installed on the acid treatment pipeline and the reduction treatment pipeline, and each drive unit is drivingly connected to both ends of the V-shaped tube; an induction sleeve, the induction sleeve is movably inserted into the lower end of the discharge pipe, and a discharge port is provided at the bottom of the induction sleeve, and a first solenoid valve is provided in the discharge port to control the first solenoid valve to open and discharge after the induction sleeve senses that the reduced vanadium pentoxide reaches a preset amount; and a second solenoid valve, the second solenoid valve is installed in the discharge pipe and is located above the first solenoid valve, so that when the first solenoid valve is closed, the second solenoid valve is controlled to open, and when the first solenoid valve is opened, the second solenoid valve is controlled to close.

[0013] In one embodiment of the present invention, the induction sleeve includes: a tube body, a guide rod is connected to the top of the tube body; a guide seat, the guide seat is installed on the outer wall of the discharge pipe, and the guide rod moves through the guide seat; a spring, the spring is sleeved on the guide rod, and one end of the spring is connected to the tube body, and the other end of the spring is connected to the guide seat; and a pressure sensor is provided at the upper end of the guide seat to control the first solenoid valve to open and discharge when the pressure sensor contacts the guide seat.

[0014] In one embodiment of the present invention, the reduction treatment pipeline includes: an inclined tube body, the outer side wall of the lower end of the inclined tube body is connected to the reducing agent input pipeline; a storage chamber, the storage chamber is connected to the top of the inclined tube body; a spiral rod, the spiral rod is inserted in the inclined tube body; and a spiral drive motor, the spiral drive motor is installed on one side of the bottom of the inclined tube body, and the power output end of the spiral drive motor is connected to the lower end of the spiral rod to drive the reduced vanadium pentoxide to move downward to the precipitation pipeline.

[0015] As described above, the wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst of the present invention has the following beneficial effects: through the mutual cooperation between the main line and the acid adding and mixing device, it can be realized that when an acid solution such as ammonium chloride is added to the wastewater in the main line through the acid adding and mixing device to generate soluble vanadates for the wastewater, the acid solution is applied to the wastewater along the radial direction of the main line by utilizing the feed pipe in the acid adding and mixing device that can move back and forth in the main line, and then the acid solution can be applied while stirring to improve the application effect of the acid solution in the wastewater, thereby improving the conversion rate of vanadates. In addition, in order to further adapt to the vanadium content in the wastewater, the length of the feed pipe in the main line can be adjusted, and then the distribution amount of the discharge holes along the radial direction of the wastewater can be adjusted to achieve the adjustment of the discharge amount of the acid solution from the discharge hole under the condition that the discharge rate of the discharge hole remains unchanged. Moreover, when vanadium pentoxide precipitate is generated, the cooperation between the precipitation pipeline and the reduction treatment pipeline can facilitate the precipitate to quickly reach the reduction treatment pipeline along the precipitation pipeline, and when the precipitate in the reduction treatment pipeline reaches the set amount, automatic isolation and discharge can be achieved to ensure the automatic recovery and treatment of the generated vanadium pentoxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of the wastewater treatment equipment of the present invention.

[0017] Figure 2 Shown is a schematic structural diagram of the acid treatment pipeline of the present invention.

[0018] Figure 3 It is a schematic diagram showing the structural coordination of the acid adding and mixing device and the main pipeline of the present invention.

[0019] Figure 4 Shown is a schematic structural diagram of one side of the acid adding and mixing device of the present invention.

[0020] Figure 5 Shown is a schematic structural diagram of the other side of the acid adding and mixing device of the present invention.

[0021] Figure 6 Shown is a schematic diagram of the structural arrangement of the feed pipe of the present invention.

[0022] Figure 7 It shows a schematic diagram of the structural coordination of the precipitation pipeline and the reduction treatment pipeline of the present invention.

[0023] Figure 8 Shown as the present invention Figure 7 Enlarged view of point A in the middle.

[0024] Fig. 9 Shown is a structural cross-sectional view of the precipitation pipeline and the reduction treatment pipeline of the present invention.

[0025] Component number description

[0026] Acid treatment pipeline 1; precipitation pipeline 2; reduction treatment pipeline 3; main pipeline 11; acid adding and mixing device 12; rotating seat 121; driving assembly 122; feeding pipe 123; feeding cavity 124; adjusting assembly 125; sealing tube 1211; discharge hole 1231; mounting seat 1221; first gear 1222; driving motor 1223; bracket 1251; adjustment motor 1252; connecting piece 1253; stirring rod 1254; V-shaped tube 21; driving unit 22; induction sleeve 23; first solenoid valve 24; second solenoid valve 25; discharge pipe 211; discharge port 231; tube body 232; guide rod 233; guide seat 234; spring 235; pressure sensor 236; inclined tube body 31; reducing agent input pipeline 32; storage cavity 33; screw rod 34; screw driving motor 35. DETAILED DESCRIPTION

[0027] See also Figure 1 and Figure 2 The present invention provides a wastewater treatment device for vanadium catalyst sulfuric acid catalyst production, comprising: an acid treatment pipeline 1, the acid treatment pipeline 1 comprising a main line 11 and an acid adding and mixing device 12, the acid adding and mixing device 12 being installed at intervals on the main line 11, so as to add acid solution to the vanadium catalyst wastewater in the main line 11 in sequence along the radial direction of the main line 11, and stir and mix during the adding process; a precipitation pipeline 2, the precipitation pipeline 2 being connected to the downstream of the main line 11, isolating and discharging the reduced vanadium pentoxide reaching a preset amount; and a reduction treatment pipeline 3, the reduction treatment pipeline 3 being connected to the downstream of the precipitation pipeline 2, the reduction treatment pipeline 3 being arranged obliquely, so that after adding the reducing agent, the reduced vanadium pentoxide slides into the precipitation pipeline 2 along the oblique direction of the reduction treatment pipeline 3.

[0028] It is not difficult to find from the above content that in the vanadium catalyst sulfuric acid catalyst wastewater treatment process, acid dissolution and reducing agent precipitation are sequentially performed to obtain vanadium pentoxide. Specifically, by passing the vanadium catalyst wastewater into the main line 11 corresponding to the acid treatment pipeline 1, an acid solution such as ammonium chloride is added to the main line 11 through an acid adding and mixing device 12. And when adding the main line 11, the acid adding and mixing device 12 will also allow the acid solution to be added along the radial direction of the main line 11, thereby achieving addition along the cross-sectional direction of the vanadium catalyst wastewater flow, so as to improve the uniformity of the addition of the acid solution, ensure the acid solution treatment effect, and obtain soluble vanadate. Further, the soluble vanadate obtained by the acid solution treatment is converted into a vanadium pentoxide with a relatively stable form by a reducing agent. And when adding the reducing agent, by adding the reducing agent into the obliquely arranged reduction treatment pipeline 3, the vanadium pentoxide precipitate enters the precipitation pipeline 2 through the reduction treatment pipeline 3, and sinks to the bottom along the precipitation pipeline 2. When the vanadium pentoxide precipitate reaches a preset amount, it will be automatically discharged from the precipitation pipeline 2, so as to realize the automatic collection and treatment of the vanadium pentoxide precipitate, thereby ensuring the recovery efficiency of the vanadium pentoxide.

[0029] In one embodiment of the present invention, a collection tank (not shown in the figure) may be provided below the precipitation pipeline 2 so that when the vanadium pentoxide precipitate is discharged from the precipitation pipeline 2, it can be collected by the collection tank.

[0030] like Figures 3 to 5 As shown, the acid adding and mixing device 12 comprises: a rotating seat 121, which is rotatably mounted on the main pipeline 11, and the outside of the rotating seat 121 is connected to a sealing tube 1211; a driving component 122, which is mounted on the main pipeline 11, and the power output end of the driving component 122 is transmission-connected to the rotating seat 121; a feeding pipe 123, which is movably inserted on the rotating seat 121 and located in the sealing tube 1211, and the feeding pipe 123 is provided with outlets at intervals along its length direction. A material hole 1231; a material delivery cavity 124, which is connected to a sealing tube 1211 on the outside of the rotating seat 121 to deliver acid from the sealing tube 1211 to the feeding tube 123; and an adjusting component 125, which is arranged in the rotating seat 121, and a power output end of the adjusting component 125 is connected to the end of the feeding tube 123 to drive the feeding tube 123 to extend and retract along the sealing tube 1211, so as to adjust the number of discharge holes 1231 for adding acid along the rotating seat 121.

[0031] In one embodiment of the present invention, during the treatment, the acid adding and mixing device 12 can drive the rotating seat 121 to rotate circumferentially through the driving component 122. In addition, when the driving component 122 rotates circumferentially, it will also drive the feeding pipe 123 to rotate, and then the acid solution and the wastewater are evenly mixed by the rotation and stirring of the feeding pipe 123, thereby improving the efficiency of conversion into vanadate. In addition, in order to improve the effect of the feeding pipe 123 on the application of the acid solution, the discharge holes 1231 of the acid solution are arranged along the length direction of the feeding pipe 123, so as to achieve uniform application of the acid solution along the radial direction of the wastewater discharge. At the same time, in order to adapt to the needs of the vanadium concentration in the wastewater, the distribution length of the feeding pipe 123 in the main line 11 can also be adjusted by adjusting the component 125, so that the length of the feeding pipe 123 in the main line 11 can be effectively adjusted, and then the arrangement amount of the discharge holes 1231 along the radial direction of the wastewater flow can be adjusted, so that the intensity of the acid solution treatment can be effectively controlled. In this embodiment, when the feeding pipe 123 moves in the main line 11, the other end of the corresponding feeding pipe 123 moves back and forth in the sealing tube 1211. In addition, a feeding channel is provided on the feeding cavity 124, so as to transport the external acid liquid to the feeding pipe 123 through the feeding cavity 124 and the sealing tube 1211, and evenly distribute the acid liquid in the wastewater through the discharge hole 1231 of the feeding pipe 123.

[0032] Furthermore, the driving assembly 122 includes: a mounting seat 1221, which is mounted on the main pipeline 11; a first gear 1222, which is arranged on one side of the mounting seat 1221 and is transmission-connected to the rotating seat 121; a driving motor 1223, which is mounted on the mounting seat 1221 and a power output end of the driving motor 1223 is connected to the first gear 1222.

[0033] In this embodiment, when the driving assembly 122 drives the rotating seat 121 to rotate, the power output end of the driving motor 1223, which is preferably a servo motor, can drive the first gear 1222 to rotate, and then transmit the power to the rotating seat 121 through the first gear 1222, so that the rotating seat 121 rotates.

[0034] Preferably, the rotating seat 121 is provided with a toothed disc meshed with the first gear 1222, and the toothed disc is circumferentially mounted on the outer wall of the rotating seat 121. On the rotating seat 121, the toothed disc can mesh with the first gear 1222, and then the rotating seat 121 can be driven to rotate under the rotation of the first gear 1222.

[0035] like Figure 6 As shown, the diameters of the discharge holes 1231 along the length direction of the feeding pipe 123 decrease successively, and the diameter of a group of discharge holes 1231 close to the central axis of the main line 11 is the smallest.

[0036] In this embodiment, the diameter of the area closer to the center of the wastewater flow is smaller, so the required acid solution is relatively reduced. Therefore, the diameter of the discharge holes 1231 along the length direction of the feed pipe 123 can be reduced successively, and the diameter of a group of discharge holes 1231 close to the central axis of the main line 11 is the smallest, so that the amount of acid solution can be saved while ensuring that the acid solution treats the wastewater uniformly.

[0037] like Figure 5 As shown, the adjustment component 125 includes: a bracket 1251, which is connected to the rotating seat 121; an adjustment motor 1252, which is installed on the bracket 1251, and a connecting piece 1253 is circumferentially provided on the power output end of the adjustment motor 1252, and the connecting piece 1253 is movably connected to the end of the feeding pipe 123; and a stirring rod 1254, which is connected to the power output end of the adjustment motor 1252.

[0038] In one embodiment of the present invention, during the process of adjusting the length of the feed pipe 123, the adjusting component 125 rotates the connecting piece 1253 on the force output end of the adjusting motor 1252, which is preferably a servo motor, to drive the feed pipe 123 connected by the connecting piece 1253 to perform telescopic movement back and forth in the sealing tube 1211. Thus, when the feed pipe 123 is extended into the main line 11, the distribution amount of the discharge holes 1231 along the radial direction of the wastewater flow is increased, thereby effectively improving the conversion efficiency of the wastewater to vanadate, and if the acid discharge rate of the discharge holes 1231 remains unchanged, the increase of the discharge holes 1231 can further adapt to the change of the vanadium content measured in the wastewater.

[0039] In one embodiment of the present invention, the feed pipe 123 is a soft pipe, and a sealing gasket 1232 is provided between the outer wall of one end of the feed pipe 123 and the inner wall of the sealing tube 1211. When the connector 1253 on the adjustment motor 1252 drives the feed pipe 123 to extend and retract, by utilizing the soft characteristics of the feed pipe 123, as the length of the feed pipe 123 in the main line 11 increases or decreases, the bending degree of the feed pipe 123 is adaptively adjusted, thereby adjusting the distribution amount of the discharge hole 1231 in the radial direction of the wastewater flow.

[0040] like Figures 7 to 9As shown, the precipitation pipeline 2 includes: a V-shaped tube 21, one end of the V-shaped tube 21 is movably connected to the acid treatment pipeline 1, the other end of the V-shaped tube 21 is movably connected to the reduction treatment pipeline 3, and the lower end of the V-shaped tube 21 is connected to the discharge pipe 211; a driving unit 22, the driving unit 22 is respectively installed on the acid treatment pipeline 1 and the reduction treatment pipeline 3, and each driving unit 22 is drivingly connected to both ends of the V-shaped tube 21; an induction sleeve 23, the induction sleeve 23 is movably inserted into the lower end of the discharge pipe 211, and ... A discharge port 231 is provided at the bottom of the sleeve 23, and a first solenoid valve 24 is provided in the discharge port 231 to control the first solenoid valve 24 to open and discharge after the induction sleeve 23 senses that the reduced vanadium pentoxide reaches a preset amount, and a second solenoid valve 25 is installed in the discharge pipe 211 and located above the first solenoid valve 24 to control the second solenoid valve 25 to open when the first solenoid valve 24 is closed, and to control the second solenoid valve 25 to close when the first solenoid valve 24 is opened.

[0041] In one embodiment of the present invention, when the precipitation pipeline 2 recovers the vanadium pentoxide precipitate, it can be recovered through the discharge pipe 211 connected to the lower end of the V-shaped tube 21. Specifically, after the vanadate is converted into a relatively stable vanadium pentoxide by the reducing agent through the reduction treatment pipeline 3, it can fall into the discharge pipe 211 along the reduction treatment pipeline 3 and the V-shaped tube 21, thereby increasing the weight borne by the induction sleeve 23. At the same time, when the weight borne by the induction sleeve 23 reaches a preset value, that is, when the reduced vanadium pentoxide reaches a preset amount, the second solenoid valve 25 can be controlled to be closed, and the first solenoid valve 24 can be opened at the same time, so that the reduced vanadium pentoxide is isolated and discharged. For example, when the reduced vanadium pentoxide reaches the lower position of the second solenoid valve 25, the preset amount of reduced vanadium pentoxide is reached, so as to control the opening of the first solenoid valve 24, and the reduced vanadium pentoxide is isolated and discharged.

[0042] like Figure 8 and Fig. 9 As shown, the sensing sleeve 23 includes: a tube body 232, a guide rod 233 is connected to the top of the tube body 232; a guide seat 234, the guide seat 234 is installed on the outer wall of the discharge pipe 211, and the guide rod 233 moves through the guide seat 234; a spring 235, the spring 235 is sleeved on the guide rod 233, and one end of the spring 235 is connected to the tube body 232, and the other end of the spring 235 is connected to the guide seat 234; and a pressure sensor 236 is provided at the upper end of the guide seat 234, so that when the pressure sensor 236 contacts the guide seat 234, the first solenoid valve 24 is controlled to open and discharge.

[0043] In one embodiment of the present invention, during the operation of the induction sleeve 23, the reduced vanadium pentoxide will continuously fall to the first solenoid valve 24 corresponding to the bottom of the tube body 232 for processing, thereby causing the tube body 232 to move downward under the guidance of the guide rod 233 and the guide seat 234. As the guide rod 233 moves downward, when the pressure sensor 236 on the guide rod 233 contacts the guide seat 234, the first solenoid valve 24 is controlled to open the discharge, and at the same time, in order to achieve the isolation between the vanadium pentoxide and the wastewater, the second solenoid valve 25 will be in a closed state. And after the discharge is completed, the first solenoid valve 24 is further closed and the second solenoid valve 25 is opened in sequence.

[0044] It is worth noting that one end of the V-shaped tube 21 is movably connected to the acid treatment pipeline 1, and the other end of the V-shaped tube 21 is movably connected to the reduction treatment pipeline 3, and the V-shaped tube 21 can also be driven to rotate by the driving unit 22, so that the vanadium pentoxide precipitate reaching the V-shaped tube 21 is subjected to centrifugal motion, and then quickly moves to the discharge pipe 211 at the bottom of the V-shaped tube 21, so as to further control the separation between the vanadium pentoxide precipitate and the wastewater through the first solenoid valve 24 and the second solenoid valve 25.

[0045] like Figure 7 and Fig. 9 As shown, the reduction treatment pipeline 3 includes: an inclined tube body 31, the outer side wall of the lower end of the inclined tube body 31 is connected to the reducing agent input pipeline 32; a storage chamber 33, the storage chamber 33 is connected to the top of the inclined tube body 31; a spiral rod 34, the spiral rod 34 is inserted in the inclined tube body 31; and a spiral drive motor 35, the spiral drive motor 35 is installed on one side of the bottom of the inclined tube body 31, and the power output end of the spiral drive motor 35 is connected to the lower end of the spiral rod 34 to drive the reduced vanadium pentoxide to move downward to the precipitation pipeline 2.

[0046] In one embodiment of the present invention, a plurality of reducing agent input pipelines 32 can be provided along the length direction of the inclined tube body 31. Acid solution that reduces vanadate to vanadium pentoxide can be directly added to the inclined tube body 31 through the reducing agent input pipeline 32. When the wastewater is continuously transported upward along the inclined tube body 31, the spiral drive motor 35, which is preferably a servo motor, drives the spiral rod 34 to rotate, so that the spiral rod 34 generates a driving force opposite to the wastewater transport direction, thereby driving the combined reducing agent to be reduced to vanadium pentoxide precipitation to move in the opposite direction along the inclined tube body 31 to the V-shaped tube 21, so as to further achieve rapid separation from the wastewater.

[0047] It is worth noting that the storage chamber 33 is a cavity structure whose radial size increases first and then decreases from bottom to top, so as to temporarily recover the vanadate and the reducing agent, and then after the reaction, the precipitate in the storage chamber 33 is further sent to the V-shaped tube 21 through the inclined tube body 31.

[0048] In summary, the wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst provided by the present invention can realize that when an acid solution such as ammonium chloride is added to the wastewater in the main line 11 through the acid adding and mixing device 12 to generate soluble vanadate in the wastewater, the acid solution is applied to the wastewater along the radial direction of the main line 11 by using the feed pipe 123 in the acid adding and mixing device 12 that can move back and forth in the main line 11, and then the acid solution can be applied while stirring to improve the application effect of the acid solution in the wastewater, thereby improving the conversion rate of vanadate. In addition, in order to further adapt to the vanadium content in the wastewater, the length of the feed pipe 123 in the main line 11 can be adjusted, and then the distribution amount of the discharge hole 1231 along the radial direction of the wastewater can be adjusted to achieve the discharge rate of the discharge hole 1231 to the acid solution when the discharge rate of the discharge hole 1231 remains unchanged. Furthermore, when vanadium pentoxide precipitation is generated, the mutual cooperation between the precipitation pipeline 2 and the reduction treatment pipeline 3 can facilitate the precipitation to quickly reach the reduction treatment pipeline 3 along the precipitation pipeline 2, and when the precipitation in the reduction treatment pipeline 3 reaches a set amount, automatic isolation and discharge are achieved to ensure the automatic recovery and treatment of the generated vanadium pentoxide. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst, characterized in that: include: An acid treatment pipeline (1), the acid treatment pipeline (1) comprising a main pipeline (11) and an acid adding and mixing device (12), the acid adding and mixing device (12) being installed at intervals on the main pipeline (11) to sequentially add acid to the vanadium catalyst wastewater in the main pipeline (11) along the radial direction of the main pipeline (11), and stirring and mixing during the adding process; A precipitation pipeline (2), the precipitation pipeline (2) is connected to the downstream of the main pipeline (11) to isolate and discharge the reduced vanadium pentoxide that reaches a preset amount; as well as a reduction treatment pipeline (3), the reduction treatment pipeline (3) being connected downstream of the precipitation pipeline (2), the reduction treatment pipeline (3) being arranged obliquely so that after the addition of the reducing agent, the reduced vanadium pentoxide slides along the oblique direction of the reduction treatment pipeline (3) into the precipitation pipeline (2); The acid adding and mixing device (12) comprises: A rotating seat (121), the rotating seat (121) being rotatably mounted on the main line (11), and the outside of the rotating seat (121) being connected to a sealing tube (1211); A driving assembly (122), the driving assembly (122) being mounted on the main pipeline (11), and the power output end of the driving assembly (122) being in transmission connection with the rotating seat (121); A feeding pipe (123), the feeding pipe (123) being movably inserted on the rotating seat (121) and located in the sealing tube (1211), and the feeding pipe (123) being provided with discharge holes (1231) at intervals along its length direction; a material delivery cavity (124), the material delivery cavity (124) being connected to the sealing tube (1211) outside the rotating seat (121) so as to deliver acid liquid from the sealing tube (1211) to the feeding tube (123); and An adjusting component (125), wherein the adjusting component (125) is disposed in the rotating seat (121), and a power output end of the adjusting component (125) is connected to an end of the feeding pipe (123) to drive the feeding pipe (123) to extend and retract along the sealing tube (1211), thereby adjusting the number of discharge holes (1231) for adding acid along the rotating seat (121).

2. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The driving assembly (122) comprises: A mounting seat (1221), the mounting seat (1221) being mounted on the main line (11); a first gear (1222), the first gear (1222) being arranged on one side of the mounting seat (1221), and the first gear (1222) being transmission-connected to the rotating seat (121); A driving motor (1223), wherein the driving motor (1223) is mounted on the mounting seat (1221), and a power output end of the driving motor (1223) is connected to the first gear (1222).

3. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 2, characterized in that: The rotating seat (121) is provided with a toothed disc meshing with the first gear (1222), and the toothed disc is sleeved on the outer wall of the rotating seat (121) along the circumferential direction.

4. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The diameters of the discharge holes (1231) decrease successively along the length direction of the feeding pipe (123), and the diameter of a group of discharge holes (1231) close to the central axis of the main line (11) is the smallest.

5. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The adjustment component (125) comprises: A bracket (1251), the bracket (1251) being connected to the rotating seat (121); an adjusting motor (1252), the adjusting motor (1252) being mounted on the bracket (1251), a connecting piece (1253) being circumferentially provided on a power output end of the adjusting motor (1252), the connecting piece (1253) being movably connected to an end of the feeding pipe (123); and A stirring rod (1254), wherein the stirring rod (1254) is connected to a power output end of the adjustment motor (1252).

6. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The feeding pipe (123) is a soft pipe, and a sealing gasket ring (1232) is provided between the outer wall of one end of the feeding pipe (123) and the inner wall of the sealing pipe (1211).

7. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The sedimentation pipeline (2) comprises: a V-shaped tube (21), one end of the V-shaped tube (21) being movably connected to the acid treatment pipeline (1), the other end of the V-shaped tube (21) being movably connected to the reduction treatment pipeline (3), and the lower end of the V-shaped tube (21) being connected to a discharge pipe (211); A driving unit (22), wherein the driving unit (22) is installed on the acid treatment pipeline (1) and the reduction treatment pipeline (3), respectively, and each of the driving units (22) is drivingly connected to both ends of the V-shaped pipe (21); an induction sleeve (23), the induction sleeve (23) being movably inserted into the lower end of the discharge pipe (211), and a discharge port (231) being provided at the bottom of the induction sleeve (23), and a first solenoid valve (24) being provided in the discharge port (231) so as to control the first solenoid valve (24) to open and discharge material after the induction sleeve (23) senses that the reduced vanadium pentoxide reaches a preset amount; and A second solenoid valve (25), the second solenoid valve (25) is installed in the discharge pipe (211) and is located above the first solenoid valve (24), so as to control the second solenoid valve (25) to open when the first solenoid valve (24) is closed, and to control the second solenoid valve (25) to close when the first solenoid valve (24) is opened.

8. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 7, characterized in that: The induction sleeve (23) comprises: A tube body (232), wherein the top of the tube body (232) is connected to a guide rod (233); A guide seat (234), the guide seat (234) being mounted on the outer side wall of the discharge pipe (211), and the guide rod (233) movably passing through the guide seat (234); a spring (235), wherein the spring (235) is sleeved on the guide rod (233), one end of the spring (235) is connected to the tube body (232), and the other end of the spring (235) is connected to the guide seat (234); and A pressure sensor (236) is provided at the upper end of the guide seat (234) so ​​as to control the first solenoid valve (24) to open and discharge material when the pressure sensor (236) contacts the guide seat (234).

9. The wastewater treatment equipment for the production of vanadium catalyst sulfuric acid catalyst according to claim 1, characterized in that: The reduction treatment pipeline (3) comprises: An inclined tube body (31), wherein the outer side wall of the lower end of the inclined tube body (31) is connected to a reducing agent input pipeline (32); A material storage chamber (33), the material storage chamber (33) being connected to the top end of the inclined tube body (31); a spiral rod (34), the spiral rod (34) being inserted into the inclined tube body (31); and A spiral drive motor (35), the spiral drive motor (35) is installed on one side of the bottom of the inclined tube body (31), and the power output end of the spiral drive motor (35) is connected to the lower end of the spiral rod (34) to drive the reduced vanadium pentoxide to move downward to the precipitation pipeline (2).

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