An automatic salt-to-nitrate ratio adjustment device for coking wastewater salinization process

Abstract

This invention relates to the field of coking wastewater desalination technology and discloses an automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination. The device includes a first mixing tank, with a second, third, and fourth mixing tank stacked sequentially on top of the first mixing tank. A top cover is movably fitted onto the upper part of the fourth mixing tank. A liquid conveying and discharging tank is installed at the lower part of the first mixing tank, and a base plate is fixedly connected to the lower end of the interior of the first mixing tank. This automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination mixes solutions of different proportions sequentially through the first, second, third, and fourth mixing tanks. Simultaneously, when the solution inside the first mixing tank is used and discharged, the second, third, and fourth mixing tanks sequentially discharge the solution downwards, preventing cross-flow between solutions of different proportions during discharge.

Description

Technical Field

[0001] This invention relates to the field of coking wastewater desalination technology, specifically to an automatic salt-nitrate ratio adjustment device for coking wastewater desalination process. Background Technology

[0002] Coking wastewater is a typical type of toxic and recalcitrant organic wastewater. It mainly originates from the primary cooling of coke oven gas, production water used in the coking process, and steam condensate wastewater. In the coking wastewater treatment process, a coking wastewater desalination process is employed to remove harmful substances. This process requires sealing the wastewater using a salt-nitrate mixture. Furthermore, the salt-nitrate ratio needs to be adjusted during the preparation of the salt-nitrate solution. To improve the convenience of adjusting the salt-nitrate ratio, an automatic salt-nitrate ratio adjustment device has been developed.

[0003] In the automatic salt-to-nitrate ratio adjustment device, brine and nitrate solution are sequentially transported to the mixing tank in the corresponding proportions via a conveying pipeline. The mixing tank is equipped with a stirring device to mix the solutions in the correct proportions. However, when using a single mixing tank to carry the salt-to-nitrate solution for proportioning, when using the mixed solution in large quantities, the solution needs to be reproduced after the solution in the mixing tank is used up. This reproducion of the solution proportions creates a vacuum period during solution use. At the same time, when subsequent solutions are directly transported to the mixing tank that has not been fully used up, the mixing of unused solution with the newly injected solution will cause changes in the overall solution proportions, making it difficult to control and adjust the solution proportions during use. To address this issue, an automatic salt-to-nitrate ratio adjustment device for the coking wastewater desalination process is proposed. Summary of the Invention

[0004] To address the shortcomings of existing automatic salt-to-nitrate ratio adjustment devices used in coking wastewater desalination processes, this invention provides an automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination processes. This device comprises four mixing tanks—a first, second, third, and fourth—that are stacked on top of each other and sequentially interconnected. The device controls and adjusts the internal solution ratios of these four mixing tanks as needed, thus increasing the thoroughness of mixing and solving the problems mentioned in the background art.

[0005] This invention provides the following technical solution: an automatic salt-to-nitrate ratio adjustment device for a coking wastewater desalination process, comprising a first mixing tank, a second mixing tank, a third mixing tank, and a fourth mixing tank stacked sequentially on the upper part of the first mixing tank, a top cover movably fitted onto the upper part of the fourth mixing tank, a liquid conveying and discharging tank installed at the lower part of the first mixing tank, a bottom plate fixedly connected to the lower end of the interior of the first mixing tank, a rotating sealing plate movably fitted onto the outer side of the interior of the bottom plate, a limiting sleeve fixedly connected to the middle of the bottom end of the first mixing tank, a rotating column fixedly connected to the upper part of the limiting sleeve, a stirring rod fixedly connected to the outer side of the rotating column, a gear installed inside one side of the first mixing tank, a gear motor meshing with the outer side of the gear, a third brine pipe and a first nitrate pipe respectively installed on the two outer sides of the fourth mixing tank, a first brine pipe installed on one side of the upper part of the third mixing tank, a second nitrate pipe fixedly connected to the outer side of the second mixing tank, a second brine pipe and a third nitrate pipe fixedly connected to the two outer sides of the first mixing tank, a sealing plate fixedly connected inside the first nitrate pipe, and a spiral pipe installed inside the outer side of the first nitrate pipe.

[0006] Preferably, the bottom of the first mixing tank, the second mixing tank, the third mixing tank, and the fourth mixing tank are all equipped with a base plate. The interiors of the first mixing tank, the second mixing tank, the third mixing tank, and the fourth mixing tank are all threadedly connected to each other. Different amounts of brine and nitrate solution are added between the interiors of the first mixing tank, the second mixing tank, the third mixing tank, and the fourth mixing tank as needed to avoid cross-flow of liquids between different areas when the proportions of brine and nitrate solution are mixed.

[0007] Preferably, the rotating sealing plate is closely attached to the inside of the base plate, and a water outlet is provided on one side of the interior of the rotating sealing plate and the base plate. The rotating sealing plate seals the opening inside the base plate to prevent liquid from continuously flowing downward.

[0008] Preferably, a groove is provided inside the lower side of the first mixing box, one side of the gear is movably sleeved inside the groove, the inner side of the gear is meshed with the rotating sealing plate, and the gear and the gear motor are meshed with each other. By starting the gear motor, the gear motor can control and adjust whether the rotating sealing plate and the hole inside the bottom plate are sealed.

[0009] Preferably, a rhombus is installed on the upper part of the rotating column, and the rhombus is movably sleeved on the lower end of another set of rotating columns. A limiting sleeve is installed in the middle of the upper part of the base plate, and the limiting sleeve is movably sleeved inside the limiting sleeve. After the first mixing box, the second mixing box, the third mixing box and the fourth mixing box are stacked on top of each other, that is, the rotating columns are mutually sleeved and limited. At the same time, when the rotating column rotates, the rotating columns installed inside the first mixing box, the second mixing box, the third mixing box and the fourth mixing box can rotate continuously.

[0010] Preferably, two sets of stirring rods are installed outside the rotating column. The stirring rods are in close contact with the inner wall of the first mixing tank. The rotating column drives the stirring rods to rotate, and during the rotation of the stirring rods, the stirring rods mix the liquid filled inside the first mixing tank.

[0011] Preferably, a fastening bolt is installed between the liquid conveying discharge box and the lower end of the first mixing box. A water outlet is opened inside the lower end of the liquid conveying discharge box. The liquid conveying discharge box is installed inside the mixing equipment in the coking wastewater salinization process. The mixed liquid is continuously conveyed to the mixing equipment in the coking wastewater salinization process through the water outlet formed inside the liquid conveying discharge box, which increases the convenience of conveying the mixed liquid.

[0012] Preferably, the exterior of the third saline pipe, the first saline pipe, and the second saline pipe are interconnected with the interior of the saline mixing tank, and the exterior of the first nitrate pipe, the second nitrate pipe, and the third nitrate pipe are interconnected with the interior of the nitrate mixing tank. The liquid is reserved inside the first mixing tank. When it is necessary to adjust the liquid concentration, the concentration ratio can be adjusted again through the second saline pipe and the third nitrate pipe. That is, when the two solutions are mixed, the uniformity and variability of the solution mixing are increased.

[0013] Preferably, a groove covering a quarter of the interior of one side of the sealing plate is provided, and one side of the spiral pipe is in contact with the outer side of the sealing plate. A certain amount of liquid can be transported to the inside of the first nitric acid pipe through the spiral pipe. That is, after the spiral pipe rotates for a period of time, the uniformity of liquid transportation is increased. At the same time, the holes opened inside the sealing plate are aligned with the spiral pipe to prevent the liquid from being continuously transported to the inside.

[0014] Preferably, the motor installed on the outside of the spiral pipe is connected to the external detection equipment, and the external detection equipment is connected to the internal coking wastewater salinization process to control the rotation cycle of the motor and automatically control and adjust the content of the liquid continuously transported to the inside.

[0015] Compared with existing automatic salt-to-nitrate ratio adjustment devices used in coking wastewater desalination processes, this invention has the following advantages:

[0016] 1. The automatic salt-to-nitrate ratio adjustment device used in the coking wastewater desalination process involves stacking a first mixing tank, a second mixing tank, a third mixing tank, and a fourth mixing tank. Brine and nitrate are mixed sequentially within these four tanks. As needed, the ratio is fine-tuned within the fourth, third, and second mixing tanks. Simultaneously, when brine and nitrate are added to the first mixing tank and need to be discharged, the salt-to-nitrate ratio is adjusted again. This pre-adjustment of the salt-to-nitrate ratio prevents excessive time spent adjusting the ratio during discharge.

[0017] 2. The automatic salt-to-nitrate ratio adjustment device used in the coking wastewater salinization process mixes solutions of different proportions sequentially through a first mixing tank, a second mixing tank, a third mixing tank, and a fourth mixing tank. Simultaneously, after the solution in the first mixing tank is used and discharged, the second, third, and fourth mixing tanks sequentially carry the solution downwards to discharge it, thus avoiding cross-flow between solutions of different proportions when discharging them.

[0018] 3. The automatic salt-to-nitrate ratio adjustment device used in the coking wastewater salinization process, by starting the spiral pipe, the position between the spiral pipe and the sealing plate is mutually fixed. At the same time, during the rotation of the spiral pipe, the spiral pipe can sequentially carry brine or nitrate water inward. When the position between the inner side of the spiral pipe and the inner side of the sealing plate forms a hole, liquid discharge can be prevented, thus increasing the sealing performance of the liquid transport inside the third brine pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a side view of the main body of the invention without the delivery pipe.

[0021] Figure 3 This is a schematic cross-sectional view of the main body of the present invention;

[0022] Figure 4 This is a schematic diagram of the side cross-sectional structure of the main body of the present invention;

[0023] Figure 5 This is a partial top view of the main body of the present invention.

[0024] In the diagram: 1. First mixing tank; 2. Second mixing tank; 3. Third mixing tank; 4. Fourth mixing tank; 5. Top cover; 6. Liquid conveying and discharging tank; 7. Base plate; 8. Rotary sealing plate; 9. Limiting sleeve; 10. Rotating column; 11. Stirring rod; 12. Gear; 13. Gear motor; 14. First nitric acid pipe; 15. First brine pipe; 16. Second nitric acid pipe; 17. Second brine pipe; 18. Third nitric acid pipe; 19. Sealing plate; 20. Spiral pipe; 21. Third brine pipe. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5An automatic salt-to-nitrate ratio adjustment device for a coking wastewater desalination process includes a first mixing tank 1. A second mixing tank 2, a third mixing tank 3, and a fourth mixing tank 4 are sequentially stacked on top of the first mixing tank 1. These mixing tanks sequentially carry liquid and mix it between different zones. A top cover 5 is movably fitted onto the upper part of the fourth mixing tank 4. A liquid conveying and discharging tank 6 is installed at the lower part of the first mixing tank 1, conveying the liquid to be discharged downwards. A base plate 7 is fixedly connected to the lower end of the interior of the first mixing tank 1. The lower end of the first mixing chamber 1 is blocked. A rotating sealing plate 8 is movably sleeved on the outer side of the inner side of the bottom plate 7. The position of the rotating sealing plate 8 is adjusted to control whether the holes inside the bottom plate 7 are sealed. A limiting sleeve 9 is fixedly connected to the middle of the bottom end of the first mixing chamber 1, and the position between the limiting sleeve 9 and the bottom plate 7 is kept sealed. A rotating column 10 is fixedly connected to the upper part of the limiting sleeve 9. During the rotation of the rotating column 10, the rotating column 10 carries the stirring rod 11, which can rotate. The stirring rod 11 is fixedly connected to the outer side of the rotating column 10. During the rotation of the stirring rod 11, the stirring rod 11 carries... The liquids inside the first mixing tank 1, the second mixing tank 2, the third mixing tank 3, and the fourth mixing tank 4 are mixed. A gear 12 is installed inside one side of the first mixing tank 1. A gear motor 13 is meshed with the outside of the gear 12. When the gear motor 13 is started, it drives the gear 12 to rotate. The gear 12 meshes with the rotating sealing plate 8, and the gear 12 continuously rotates the rotating sealing plate 8. A third brine pipe 21 and a first nitrate pipe 14 are installed on the outer sides of the fourth mixing tank 4, respectively. The first nitrate pipe 14 and the third brine pipe 21 sequentially carry brine and nitrate water to the fourth mixing tank. The internal conveying of the first brine pipe 15 is installed on one side of the upper part of the third mixing box 3. The second nitrate pipe 16 is fixedly connected to the outside of the second mixing box 2. The second brine pipe 17 and the third nitrate pipe 18 are fixedly connected to the two sides of the outside of the first mixing box 1. The first brine pipe 15, the second nitrate pipe 16, the second brine pipe 17 and the third nitrate pipe 18 are controlled and regulated when carrying liquid. The sealing plate 19 is fixedly connected inside the first nitrate pipe 14. The sealing plate 19 controls whether the inside of the first nitrate pipe 14 is sealed. The spiral pipe 20 is installed inside the outside of the first nitrate pipe 14.

[0027] refer to Figure 1 and Figure 3Each of the first mixing tank 1, second mixing tank 2, third mixing tank 3, and fourth mixing tank 4 is equipped with a base plate 7. The interiors of the first mixing tank 1, second mixing tank 2, third mixing tank 3, and fourth mixing tank 4 are all threaded together. The first mixing tank 1, second mixing tank 2, third mixing tank 3, and fourth mixing tank 4 are stacked on top of each other in sequence. As needed, brine and nitrate water are mixed in the first mixing tank 1, second mixing tank 2, third mixing tank 3, and fourth mixing tank 4. At the same time, different amounts of brine and nitrate water can be added to the first mixing tank 1, second mixing tank 2, third mixing tank 3, and fourth mixing tank 4 as needed. That is, when the ratio of brine and nitrate water is controlled and adjusted, such as the common ratio of brine and nitrate water being controlled at 1:1, but when the content of different harmful substances in the wastewater is different, the ratio of brine and nitrate water can be controlled between 1-5:1-2. This can increase the convenience of adjusting the ratio of brine and nitrate water and avoid cross-flow between liquids in different areas when the brine and nitrate water are mixed.

[0028] refer to Figure 5 The rotating sealing plate 8 is tightly attached to the inside of the base plate 7. A water outlet is provided on one side of the interior of the rotating sealing plate 8 and the base plate 7. The rotating sealing plate 8 is movably sleeved inside the base plate 7. A water outlet is provided between the base plate 7 and the rotating sealing plate 8. The water outlet carries the upper liquid downward. At the same time, when the position of the rotating sealing plate 8 inside the base plate 7 is adjusted, the rotating sealing plate 8 seals the opening inside the base plate 7 to prevent the liquid from being continuously transported downward.

[0029] refer to Figure 1 and Figure 5 The lower side of the first mixing box 1 has a sliding groove. One side of the gear 12 is movably sleeved inside the sliding groove. The inner side of the gear 12 is meshed with the rotating sealing plate 8. The gear 12 and the gear motor 13 are meshed with each other. By starting the gear motor 13, the gear motor 13 carries the gear 12 to mesh. At the same time, during the rotation of the gear 12, the gear 12 and the rotating sealing plate 8 are meshed with each other. That is, starting the gear motor 13 controls and adjusts whether the rotating sealing plate 8 and the hole inside the bottom plate 7 are sealed.

[0030] refer to Figure 3 and Figure 4A rhombus is installed on the upper part of the rotating column 10. The rhombus is movably sleeved on the lower end of another set of rotating columns 10. A limiting sleeve is installed in the middle of the upper end of the base plate 7. The limiting sleeve 9 is movably sleeved inside the limiting sleeve and is movably sleeved on the outside of the rotating sealing plate 8. At the same time, the rotating columns 10 are stacked on top of each other in sequence. That is, after the first mixing box 1, the second mixing box 2, the third mixing box 3 and the fourth mixing box 4 are stacked on top of each other, the rotating columns 10 are mutually sleeved and limited. At the same time, when the rotating column 10 rotates, the rotating columns 10 installed inside the first mixing box 1, the second mixing box 2, the third mixing box 3 and the fourth mixing box 4 can continue to rotate.

[0031] refer to Figure 4 Two sets of stirring rods 11 are installed on the outside of the rotating column 10. The stirring rods 11 are close to the inner wall of the first mixing box 1. The stirring rods 11 are installed on the outside of the rotating column 10 and are close to the inner wall of the first mixing box 1. When the rotating column 10 rotates, the rotating column 10 drives the stirring rods 11 to rotate. During the rotation of the stirring rods 11, the stirring rods 11 mix the liquid filled inside the first mixing box 1.

[0032] refer to Figure 4 A fastening bolt is installed between the liquid conveying discharge box 6 and the lower end of the first mixing box 1. A water outlet is opened inside the lower end of the liquid conveying discharge box 6. The liquid conveying discharge box 6 is installed inside the mixing equipment in the coking wastewater salinization process. The fastening bolt is installed between the liquid conveying discharge box 6 and the lower end of the first mixing box 1. At the same time, a water outlet is installed at the lower part of the liquid conveying discharge box 6. When the liquid conveying discharge box 6 conveys the mixed liquid to the first mixing box 1, the mixed liquid can be continuously conveyed to the mixing equipment in the coking wastewater salinization process through the water outlet formed inside the liquid conveying discharge box 6, which increases the convenience of conveying the mixed liquid.

[0033] refer to Figure 1The exterior of the third brine pipe 21, the first brine pipe 15, and the second brine pipe 17 are interconnected with the interior of the brine mixing tank. The exterior of the first nitrate pipe 14, the second nitrate pipe 16, and the third nitrate pipe 18 are interconnected with the interior of the nitrate-water mixing tank. The third brine pipe 21, the first brine pipe 15, and the second brine pipe 17 are interconnected with the interior of the brine mixing tank, while the exterior of the first nitrate pipe 14, the second nitrate pipe 16, and the third nitrate pipe 18 are interconnected with the interior of the nitrate-water mixing tank. The third brine pipe 21, the first brine pipe 15, and the second brine pipe 17, along with the first nitrate pipe 14, the second nitrate pipe 16, and the third nitrate pipe 18, sequentially carry different liquids for mixing. The third brine pipe 21 and the first nitrate pipe 14... The liquids are initially mixed while maintaining uniformity between the two proportions. The liquid in the fourth mixing tank 4 is then transported to the third mixing tank 3. As needed, the brine transported in the first brine pipe 15 is mixed. The mixed brine in the third mixing tank 3 is then transported to the second mixing tank 2, where it is finely mixed and adjusted via the second nitrate pipe 16. The liquid after proportioning is completed is then transported to the first mixing tank 1 and reserved there. When the liquid concentration needs adjustment, it can be adjusted again via the second brine pipe 17 and the third nitrate pipe 18. This process increases the uniformity and variability of the mixed solution.

[0034] refer to Figure 2 and Figure 4 The sealing plate 19 has a groove in one-quarter of its interior. The spiral pipe 20 fits against the outer side of the sealing plate 19. The sealing plate 19 is installed inside the first nitric acid pipe 14. When the spiral pipe 20 is started, it rotates and continuously transports liquid to the other side. When the spiral pipe 20 rotates, it can transport a certain amount of liquid to the inside of the first nitric acid pipe 14. This increases the uniformity of liquid transport after each rotation cycle of the spiral pipe 20. At the same time, the holes inside the sealing plate 19 are aligned with the spiral pipe 20 to prevent the liquid from continuously being transported to the inside.

[0035] refer to Figure 1 The motor installed on the outside of the spiral pipe 20 is connected to the external detection equipment. The external detection equipment is connected to the internal coking wastewater salinization process. The external detection equipment, which includes a liquid concentration detection device and a concentration requirement control device, detects the output liquid ratio. When it is necessary to control the solution ratio, the motor rotation cycle is controlled, and the content of liquid continuously transported to the inside can be controlled and adjusted automatically.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic salt-to-nitrate ratio adjustment device for a coking wastewater desalination process, comprising a first mixing tank (1), wherein a second mixing tank (2), a third mixing tank (3), and a fourth mixing tank (4) are sequentially stacked on the upper part of the first mixing tank (1), wherein a top cover (5) is movably fitted onto the upper part of the fourth mixing tank (4), and a liquid conveying and discharging tank (6) is installed at the lower part of the first mixing tank (1), characterized in that: A base plate (7) is fixedly connected to the lower end of the first mixing box (1). A rotating sealing plate (8) is movably sleeved on the outer side of the base plate (7). A limiting sleeve (9) is fixedly connected to the middle of the bottom end of the first mixing box (1). A rotating column (10) is fixedly connected to the upper part of the limiting sleeve (9). A stirring rod (11) is fixedly connected to the outer side of the rotating column (10). A gear (12) is installed inside one side of the first mixing box (1). A gear motor (13) is meshed with the outer side of the gear (12). The fourth mixing box... A third brine pipe (21) and a first nitrate pipe (14) are installed on the two sides of the outer side of the box (4), a first brine pipe (15) is installed on one side of the upper part of the third mixing box (3), a second nitrate pipe (16) is fixedly connected to the outer side of the second mixing box (2), a second brine pipe (17) and a third nitrate pipe (18) are fixedly connected to the two sides of the outer side of the first mixing box (1), a sealing plate (19) is fixedly connected inside the first nitrate pipe (14), and a spiral pipe (20) is installed inside the outer side of the first nitrate pipe (14). The bottom of the first mixing box (1), the second mixing box (2), the third mixing box (3) and the fourth mixing box (4) are all equipped with a base plate (7), and the interiors of the first mixing box (1), the second mixing box (2), the third mixing box (3) and the fourth mixing box (4) are all threadedly connected to each other; The rotating sealing plate (8) is closely attached to the inside of the bottom plate (7), and a water outlet hole is provided on one side of the inside of the rotating sealing plate (8) and the bottom plate (7).

2. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: The first mixing box (1) has a groove on the lower side of its interior. One side of the gear (12) is movably fitted inside the groove. The inner side of the gear (12) is meshed with the rotating sealing plate (8). The gear (12) and the gear motor (13) are meshed with each other.

3. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: A rhombus is installed on the upper part of the rotating column (10), and the rhombus is movably sleeved on the lower end of another set of rotating columns (10). A limiting sleeve is installed in the middle of the upper end of the base plate (7), and the limiting sleeve (9) is movably sleeved inside the limiting sleeve.

4. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: Two sets of stirring rods (11) are installed on the outside of the rotating column (10), and the stirring rods (11) are in close contact with the inner wall of the first mixing box (1).

5. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: A fastening bolt is installed between the lower end of the liquid conveying discharge box (6) and the first mixing box (1). A water outlet is opened inside the lower end of the liquid conveying discharge box (6). The liquid conveying discharge box (6) is installed inside the mixing equipment in the coking wastewater salinization process.

6. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: The exterior of the third brine pipe (21), the first brine pipe (15), and the second brine pipe (17) are connected to the interior of the brine mixing tank, and the exterior of the first nitrate pipe (14), the second nitrate pipe (16), and the third nitrate pipe (18) are connected to the interior of the nitrate mixing tank.

7. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: The sealing plate (19) has a groove in one-quarter of its interior, and one side of the spiral pipe (20) is in contact with the outer side of the sealing plate (19).

8. The automatic salt-to-nitrate ratio adjustment device for coking wastewater desalination process according to claim 1, characterized in that: The motor installed on the outside of the spiral pipe (20) is connected to the external detection equipment, and the external detection equipment is connected to the internal coking wastewater salinization process.

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