Combined treatment equipment for recycling of acid from chlorinated organic waste gas

Abstract

The application discloses a combined treatment equipment for recycling of acid prepared from chlorine-containing organic waste gas, which comprises a quenching tower, a water washing tower, a first storage tank, a second storage tank and a collecting tank, wherein the bottom of the quenching tower is communicated with an air inlet pipe, the top of the quenching tower and the bottom of the water washing tower are communicated with an air guide pipe, the top of the water washing tower is communicated with an air outlet pipe, the second storage tank and the water washing tower are communicated with a second circulating pipe, the second storage tank and the first storage tank are communicated with a third circulating pipe, and the first storage tank is communicated with the collecting tank through a water outlet pipe.

Description

Technical Field

[0001] This invention relates to the field of waste gas recovery technology, specifically a combined treatment device for the reuse of chlorine-containing organic waste gas in acid production. Background Technology

[0002] Chlorine-containing organic waste gas, after being incinerated at high temperatures in an RTO (Regenerative Thermal Oxidizer), produces hydrogen chloride. Absorption with sodium hydroxide solution yields a sodium chloride salt solution, which requires further treatment before discharge. However, this treatment method not only increases disposal costs, but also wastes valuable resources as the hydrogen chloride solution itself is a usable byproduct.

[0003] In the prior art, a chlorine-containing waste gas absorption system disclosed in CN103736378B includes a pre-washing tower, a primary tower, and a secondary tower connected in series, as well as an alkali addition pump connected to the secondary tower. It also includes a control device, which controls the addition and discharge of liquid alkali. The system also discloses a method for absorbing chlorine-containing waste gas, in which liquid alkali is added to the secondary tower by the alkali addition pump. When the control device detects that the pH value of the absorbent in the primary tower is lower than the standard value, the absorbent in the primary tower is automatically discharged to the pre-washing tower, and the absorbent in the secondary tower is automatically discharged to the primary tower. When the control device detects that the pH value of the washing liquid in the pre-washing tower is lower than the standard value, the washing liquid is automatically discharged, and the absorbent in the primary tower is automatically discharged to the pre-washing tower. This chlorine-containing waste gas absorption system can maintain a high pH value in the liquid of each tower, ensuring that the chlorine-containing waste gas meets emission standards.

[0004] However, it still has its drawbacks: the above-mentioned device directly absorbs chlorine-containing waste gas by adding alkali. This treatment method not only increases the cost of preparing alkali solution, but also wastes the acidic solution formed after the chlorine-containing waste gas comes into contact with water. Therefore, improvements are needed. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a combined treatment device for the reuse of chlorine-containing organic waste gas to produce acid, so as to solve the problems mentioned in the background art.

[0006] A combined treatment device for the reuse of chlorinated organic waste gas to produce acid, comprising:

[0007] A quench tower, wherein an air inlet pipe is connected to the bottom of the quench tower;

[0008] A water washing tower is provided with a gas guide pipe connecting the top of the quench tower and the bottom of the water washing tower, and an exhaust pipe is provided connecting the top of the water washing tower.

[0009] A first storage tank is provided with a first spray pipe, which extends into a quench tower and is connected to a plurality of first spray heads. A first circulation pipe is connected between the quench tower and the first storage tank, and a first electrically controlled valve is provided on the first circulation pipe.

[0010] A second storage tank is provided, and a second spray pipe is provided in the second storage tank. The second spray pipe extends into the water washing tower, and multiple second spray heads are connected to this section of the second spray pipe. A second circulation pipe is provided between the second storage tank and the water washing tower. A second electrically controlled valve is provided on the second circulation pipe. A third circulation pipe is provided between the second storage tank and the first storage tank. A third electrically controlled valve is provided at the end of the third circulation pipe near the second storage tank. A fourth electrically controlled valve is provided at the end of the third circulation pipe near the first storage tank. A third concentration measuring instrument is provided in the second storage tank.

[0011] The first storage tank is connected to the collection tank via a drain pipe, and a fifth electrically controlled valve is installed on the drain pipe;

[0012] A guide pipe is connected to the second spray pipe, and the guide pipe extends into the water washing tower. A spray head and a second concentration measuring instrument are fixedly installed at the bottom of the guide pipe. A water storage tank is fixedly installed in the water washing tower. An overflow baffle is fixedly installed in the water storage tank. The overflow baffle divides the interior of the water storage tank into a water storage chamber and an overflow chamber. A first discharge pipe is connected to the bottom of the water storage chamber. A sixth electrically controlled valve is installed on the first discharge pipe. A second discharge pipe is connected to the bottom of the overflow chamber. A seventh electrically controlled valve is installed on the second discharge pipe.

[0013] The first storage box is equipped with a first concentration measuring instrument. A rotating shaft is hinged in the first storage box and fixed to the output end of a rotary motor. A single-tooth gear is fixedly sleeved on the rotating shaft. A complete gear is meshed on the side of the single-tooth gear. A transmission rod is fixedly inserted through the center of the complete gear. A disc is fixedly sleeved on the transmission rod. Three extension posts are fixedly installed on the disc. A first trigger switch, a second trigger switch, and a third trigger switch are fixedly installed at the ends of the three extension posts. A fixing plate is provided on the side of the disc. A conductive part is embedded in the fixing plate.

[0014] Preferably, a plurality of stirring blades and stirring plates are fixedly mounted on the rotating shaft.

[0015] Preferably, a cleaning pad is fixedly provided on one of the stirring plates, and the cleaning pad can clean the first concentration measuring instrument when it rotates with the rotating shaft.

[0016] Preferably, the bottom of the transmission rod is disposed in a bearing, and the bearing is fixedly disposed on the top of the first storage box.

[0017] Preferably, a support column is fixedly provided at the bottom of the fixed plate, and the support column is fixedly provided at the top of the first storage box.

[0018] Beneficial effects:

[0019] 1. The combined treatment equipment for acid production and reuse of chlorinated organic waste gas provided by the present invention can utilize the combination of a quench tower and a water scrubbing tower to spray and absorb the hydrogen chloride generated after the chlorinated organic waste gas is incinerated at high temperature by RTO, so as to form an aqueous solution of hydrogen chloride, and finally recycle the aqueous solution of hydrogen chloride, which saves the cost of traditional alkali treatment and realizes acid production and reuse.

[0020] 2. The combined treatment equipment for acid production and reuse of chlorine-containing organic waste gas provided by the present invention can realize the reciprocating circulation of the absorbent in structures such as a quench tower, a water washing tower, a first storage tank and a second storage tank, thereby continuously increasing the concentration of hydrogen chloride aqueous solution and achieving better acid production effect.

[0021] 3. The combined treatment equipment for acid production and reuse of chlorine-containing organic waste gas provided by the present invention can periodically start the first concentration measuring instrument in the first storage tank to detect whether the concentration of hydrogen chloride solution in the first storage tank has reached the set value. If so, it is discharged for collection. This timed start method can save electricity. In addition, the first storage tank is equipped with a stirring plate, which can not only stir the solution to make the concentration measurement more accurate and avoid local errors, but also clean the first concentration measuring instrument with a cleaning pad while stirring, thereby avoiding the impact of impurities on the detection.

[0022] 4. The combined treatment equipment for acid production and reuse of chlorinated organic waste gas provided by the present invention is equipped with a second spray head in the water washing tower, which can reabsorb hydrogen chloride in the waste gas. After absorption, a second concentration measuring instrument is also installed in the water washing tower to detect whether acidic gas still remains in the treated gas. If so, the spray water volume in the water washing tower can be increased; if not, the spray water volume can be appropriately reduced to avoid excessive dilution of the hydrogen chloride solution due to excessive water volume.

[0023] This invention provides a combined treatment device for the acid production and reuse of chlorinated organic waste gas. It can collect acidic gases in the waste gas through a quench tower, a water washing tower, a first storage tank, and a second storage tank, thereby continuously increasing the concentration of the resulting acidic solution. This effectively reduces the cost of traditional acidic gas treatment and produces an acidic solution product with good performance. Attached Figure Description

[0024] Figure 1 This is a front sectional view of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Enlarged view of point A in the image;

[0026] Figure 3 For the present invention Figure 1 Enlarged view of point B in the image;

[0027] Figure 4 This is a top view schematic diagram of the relevant structures on the complete gear of the present invention.

[0028] In the diagram: 1. Quenching tower; 2. Washing tower; 3. Inlet pipe; 4. Guide pipe; 5. Exhaust pipe; 6. First storage tank; 7. First spray pipe; 8. First spray head; 9. First circulation pipe; 10. First electrically controlled valve; 11. Second storage tank; 12. Second spray pipe; 13. Second spray head; 14. Second circulation pipe; 15. Second electrically controlled valve; 16. Third circulation pipe; 17. Third electrically controlled valve; 18. Fourth electrically controlled valve; 19. First concentration measuring instrument; 20. Drain pipe; 21. Collection tank; 22. Fifth electrically controlled valve; 23. Guide pipe; 24. Spray head; 25. Second concentration measuring instrument; 26. 1. Water tank; 261. Water storage chamber; 262. Overflow chamber; 27. Overflow baffle; 28. First discharge pipe; 29. ​​Sixth electrically controlled valve; 30. Second discharge pipe; 31. Seventh electrically controlled valve; 32. Rotating shaft; 33. Rotary motor; 34. Stirring blade; 35. Stirring plate; 36. Cleaning pad; 37. Third concentration measuring instrument; 38. Single tooth gear; 39. Complete gear; 40. Transmission rod; 41. Bearing; 42. Disc; 43. Extension column; 441. First trigger switch; 442. Second trigger switch; 443. Third trigger switch; 45. Fixed plate; 451. Conductive part; 46. Support column. Detailed Implementation

[0029] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0030] This invention provides the following technical solutions:

[0031] Example 1:

[0032] A combined treatment device for the reuse of chlorinated organic waste gas to produce acid, comprising:

[0033] The bottom of the quench tower 1 is connected to an air inlet pipe 3, through which the waste gas to be treated enters the interior of the quench tower 1 and flows from bottom to top.

[0034] A gas guide pipe 4 is connected between the top of the water washing tower 2 and the bottom of the quench tower 1. The gas guide pipe 4 has the function of gas conduction, so that the water washing tower 2 can further treat the waste gas. At this time, the waste gas also flows from bottom to top in the water washing tower 2. An exhaust pipe 5 is connected to the top of the water washing tower 2, and the treated waste gas is discharged through the exhaust pipe 5.

[0035] The first storage tank 6 contains absorbent liquid and is equipped with a first spray pipe 7 that extends into the quench tower 1. Multiple first spray nozzles 8 are connected to the first spray pipe 7, which sprays absorbent liquid downwards. Since the exhaust gas in the quench tower 1 flows upwards, it can come into counter-current contact with the absorbent liquid, using water spray to absorb hydrogen chloride and form hydrochloric acid, resulting in better absorption. A first circulation pipe 9 connects the quench tower 1 and the first storage tank 6, allowing the absorbent liquid from the first storage tank 6 to be repeatedly sprayed into the quench tower 1 for use, thereby continuously increasing the concentration of the hydrogen chloride solution. A first electrically controlled valve 10 is installed on the first circulation pipe 9.

[0036] The second storage tank 11 also stores absorbent liquid. A second spray pipe 12 is installed in the second storage tank 11, extending into the water washing tower 2. Multiple second spray heads 13 are connected to this section of the second spray pipe 12, spraying absorbent liquid downwards. Since the waste gas in the water washing tower 2 flows upwards, it can come into counter-current contact with the absorbent liquid for further absorption and dissolution. A second circulation pipe 14 connects the second storage tank 11 and the water washing tower 2, allowing the absorbent liquid in the second storage tank 11 to be sprayed into the water washing tower 2 multiple times, thereby continuously increasing the solution concentration. A second electrically controlled valve 1 is installed on the second circulation pipe 14. 5. A third circulation pipe 16 is provided between the second storage tank 11 and the first storage tank 6. When the concentration of hydrogen chloride solution in the second storage tank 11 reaches a predetermined value, the solution in the second storage tank 11 can be guided to the first storage tank 6 through the third circulation pipe 16. Then, the solution in the first storage tank 6 can absorb hydrogen chloride from the flue gas again in the quench tower 1 to increase the concentration, thereby realizing repeated acid production. A third electrically controlled valve 17 is provided at one end of the third circulation pipe 16 near the second storage tank 11, and a fourth electrically controlled valve 18 is provided at one end of the third circulation pipe 16 near the first storage tank 6. A third concentration measuring instrument 37 is provided in the second storage tank 11. The third concentration measuring instrument 37 is mainly used to detect the concentration of hydrogen chloride solution in the second storage tank 11.

[0037] The first storage tank 6 is connected to the collection tank 21 through the drain pipe 20, and the drain pipe 20 is equipped with a fifth electrically controlled valve 22. When the solution concentration in the first storage tank 6 reaches the set value, the fifth electrically controlled valve 22 opens, and the solution in the first storage tank 6 enters the collection tank 21 through the drain pipe 20 for temporary storage, which is convenient for subsequent centralized processing.

[0038] Example 2:

[0039] Based on Embodiment 1 above, this embodiment adds the following structure: A guide pipe 23 is connected to the second spray pipe 12, extending into the water washing tower 2. A spray head 24 is connected to the bottom of this section of the guide pipe 23, and a second concentration measuring instrument 25 is fixedly installed thereon. The spray head 24 can spray out a fine mist of absorbent liquid. A water storage tank 26 is fixedly installed in the water washing tower 2. The water storage tank 26 has a semi-enclosed structure with an open top and is directly fixed to the inner wall of the water washing tower 2. An overflow baffle 27 is fixedly installed in the water storage tank 26. The height of the overflow baffle 27 is lower than the side height of the water storage tank 26. The overflow baffle 27 divides the interior of the water storage tank 26 into a water storage chamber 261 and an overflow chamber 262. The gas treated by the second spray head 13 continues to flow upward and comes into countercurrent contact with the absorbent liquid sprayed from the spray head 24, forming a solution. The solution continuously accumulates in the water storage chamber 261 until the solution increases and the liquid level rises. As the temperature rises, the solution enters the overflow chamber 262 after exceeding the height of the overflow baffle 27. At this point, the second concentration measuring instrument 25 measures the concentration of the solution in the overflow chamber 262. Here, the overflow baffle 27 is designed to block impurities and dirt deposited in the water storage chamber 261, making the solution in the overflow chamber 262 cleaner and preventing the second concentration measuring instrument 25 from being blocked by dirt and affecting the detection. The bottom of the water storage chamber 261 is connected to a first discharge pipe 28, which is equipped with a sixth electrically controlled valve 29. The bottom of the overflow chamber 262 is connected to a second discharge pipe 30, which is equipped with a seventh electrically controlled valve 31. After detection, the sixth electrically controlled valve 29 and the seventh electrically controlled valve 31 can be opened simultaneously to discharge the solution in both the water storage chamber 261 and the overflow chamber 262. After discharge, they are closed for solution accumulation and concentration detection again.

[0040] The first storage tank 6 is equipped with a first concentration measuring instrument 19, which is mainly used to detect the concentration of the acidic solution in the first storage tank 6. A rotating shaft 32 is hinged in the first storage tank 6 and fixed to the output end of a rotating motor 33. A single-tooth gear 38 is fixedly sleeved on the rotating shaft 32, and a complete gear 39 is meshed on the side of the single-tooth gear 38. Therefore, when the single-tooth gear 38 rotates continuously, it will intermittently drive the complete gear 39 to rotate. A transmission rod 40 is fixedly inserted through the center of the complete gear 39. A disc 42 is fixedly sleeved on the transmission rod 40. Three extension posts 43 are fixedly installed on the disc 42, and the ends of the three extension posts 43 are respectively fixedly equipped with a first trigger. The device includes a switch 441, a second trigger switch 442, and a third trigger switch 443. A fixed plate 45 is provided on the side of the disc 42, and a conductive part 451 is embedded in the fixed plate 45. When the first trigger switch 441, the second trigger switch 442, and the third trigger switch 443 come into contact with the conductive part 451, they will be energized. In this embodiment, the first trigger switch 441 is signal-connected to the first concentration measuring instrument 19 and the third concentration measuring instrument 37, the second trigger switch 442 is signal-connected to the second concentration measuring instrument 25, and the third trigger switch 443 is signal-connected to the sixth solenoid valve 29 and the seventh solenoid valve 31. When the corresponding switch is triggered and energized, the corresponding electrical equipment will automatically turn on. The time interval is reasonable and more energy-saving.

[0041] Example 3:

[0042] Based on Embodiment 1 above, this embodiment adds the following structure: A guide pipe 23 is connected to the second spray pipe 12, extending into the water washing tower 2. A spray head 24 is connected to the bottom of this section of the guide pipe 23, and a second concentration measuring instrument 25 is fixedly installed thereon. The spray head 24 can spray out a fine mist of absorbent liquid. A water storage tank 26 is fixedly installed in the water washing tower 2. The water storage tank 26 has a semi-enclosed structure with an open top and is directly fixed to the inner wall of the water washing tower 2. An overflow baffle 27 is fixedly installed in the water storage tank 26. The height of the overflow baffle 27 is lower than the side height of the water storage tank 26. The overflow baffle 27 divides the interior of the water storage tank 26 into a water storage chamber 261 and an overflow chamber 262. The gas treated by the second spray head 13 continues to flow upward and comes into countercurrent contact with the absorbent liquid sprayed from the spray head 24, forming a solution. The solution continuously accumulates in the water storage chamber 261 until the solution increases and the liquid level rises. As the temperature rises, the solution enters the overflow chamber 262 after exceeding the height of the overflow baffle 27. At this point, the second concentration measuring instrument 25 measures the concentration of the solution in the overflow chamber 262. Here, the overflow baffle 27 is designed to block impurities and dirt deposited in the water storage chamber 261, making the solution in the overflow chamber 262 cleaner and preventing the second concentration measuring instrument 25 from being blocked by dirt and affecting the detection. The bottom of the water storage chamber 261 is connected to a first discharge pipe 28, which is equipped with a sixth electrically controlled valve 29. The bottom of the overflow chamber 262 is connected to a second discharge pipe 30, which is equipped with a seventh electrically controlled valve 31. After detection, the sixth electrically controlled valve 29 and the seventh electrically controlled valve 31 can be opened simultaneously to discharge the solution in both the water storage chamber 261 and the overflow chamber 262. After discharge, they are closed for solution accumulation and concentration detection again.

[0043] A first concentration measuring instrument 19 is installed in the first storage tank 6. The first concentration measuring instrument 19 is mainly used to detect the concentration of the acidic solution in the first storage tank 6. A rotating shaft 32 is hinged in the first storage tank 6 and fixed to the output end of a rotating motor 33. Multiple stirring blades 34 and stirring plates 35 are fixedly mounted on the rotating shaft 32. The stirring blades 34 and stirring plates 35 can rotate with the rotation of the rotating shaft 32, thereby stirring and mixing the solution in the first storage tank 6. This makes the concentration measurement by the first concentration measuring instrument 19 more accurate and avoids local errors. A cleaning pad 36 is fixedly mounted on the stirring plate 35. The cleaning pad 36 cleans the first concentration measuring instrument 19 as it rotates with the rotating shaft 32, thus preventing the surface of the first concentration measuring instrument 19 from being affected by dirt. A single-tooth gear 38 is fixedly mounted on the rotating shaft 32. A complete gear 39 is meshed with the side of the single-tooth gear 38. Therefore, when the single-tooth gear 38 rotates continuously, it intermittently drives the complete gear 39 to rotate. A transmission rod 40 is fixedly mounted through the center of the complete gear 39. The bottom of the transmission rod 40 is housed in a bearing 41, which is fixedly mounted on... At the top of the first storage box 6, the bearing 41 allows the transmission rod 40 to rotate stably. A disc 42 is fixedly sleeved on the transmission rod 40, and three extension posts 43 are fixedly mounted on the disc 42. A first trigger switch 441, a second trigger switch 442, and a third trigger switch 443 are fixedly mounted at the ends of the three extension posts 43, respectively. A fixing plate 45 is provided on the side of the disc 42, and a conductive part 451 is embedded in the fixing plate 45. When the first trigger switch 441, the second trigger switch 442, and the third trigger switch 443 come into contact with the conductive part 451, electricity is applied. In this embodiment, the first trigger switch 441 is signal-connected to the first concentration measuring instrument 19 and the third concentration measuring instrument 37, the second trigger switch 442 is signal-connected to the second concentration measuring instrument 25, and the third trigger switch 443 is signal-connected to the sixth electrically controlled valve 29 and the seventh electrically controlled valve 31. When the corresponding switch is triggered and energized, the corresponding electrical equipment will automatically turn on. The time interval is reasonable and more energy-saving. A support column 46 is fixedly installed at the bottom of the fixed plate 45. The support column 46 is fixedly installed at the top of the first storage box 6. The installation of the support column 46 makes the installation of the fixed plate 45 more stable.

[0044] Working principle:

[0045] During operation, the waste gas to be treated enters the interior of the quench tower 1 through the inlet pipe 3 and flows from bottom to top. Then, the waste gas enters the bottom of the water washing tower 2 from the top of the quench tower 1 through the guide pipe 4, also flowing from bottom to top, and is finally discharged through the exhaust pipe 5. During this process, the first spray head 8 in the quench tower 1 sprays the absorbent liquid downwards, and the second spray head 13 in the water washing tower 2 also sprays the absorbent liquid downwards. Therefore, the gas can come into countercurrent contact with the absorbent liquid, so that the hydrogen chloride gas can be better absorbed.

[0046] The absorbent in the first storage tank 6 is sprayed into the quench tower 1 through the first spray pipe 7. After absorption treatment, it is returned to the first storage tank 6 through the first circulation pipe 9. The absorbent in the second storage tank 11 is sprayed into the water washing tower 2 through the second spray pipe 12. After absorption treatment, it is returned to the second storage tank 11 through the second circulation pipe 14. Thus, the absorbent in the first storage tank 6 and the second storage tank 11 can be reused, and the concentration of acidic liquid can be increased through circulation.

[0047] The second storage tank 11 is equipped with a third concentration measuring instrument 37. When the third concentration measuring instrument 37 detects that the liquid concentration has reached the set value, it opens the third electrically controlled valve 17 and the fourth electrically controlled valve 18, so that the absorbent in the second storage tank 11 enters the first storage tank 6 through the third circulation pipe 16. At this time, the absorbent in the first storage tank 6 can be sprayed into the quench tower 1 again, so that the solution concentration is further increased. Until the first concentration measuring instrument 19 detects that the solution concentration has reached the set value, the fifth electrically controlled valve 22 opens, and the absorbent in the first storage tank 6 enters the collection tank 21 through the drain pipe 20, which is convenient for subsequent centralized processing and use.

[0048] During the above operation, the rotary motor 33 can be started. The rotary motor 33 will drive the stirring blades 34 and stirring plates 35 to rotate via the rotating shaft 32. Both the stirring blades 34 and stirring plates 35 can stir and mix the solution in the first storage tank 6, making the measurement of the first concentration measuring instrument 19 more accurate and avoiding local errors. A cleaning pad 36 is fixedly installed on one of the stirring plates 35. The cleaning pad 36 can clean the first concentration measuring instrument 19 as it rotates with the rotating shaft 32, thereby preventing the surface of the first concentration measuring instrument 19 from being affected by dirt. In addition, the rotating shaft 32 will also drive the single-tooth gear 38 to rotate at the same time. The continuously rotating single-tooth gear 38 intermittently meshes with and drives the full gear 39 to rotate. The full gear 39, in turn, drives the disk 42 to rotate via the transmission rod 40. This causes the first trigger switch 441, the second trigger switch 442, and the third trigger switch 443, which are fixedly mounted on the three extension posts 43, to rotate. When these switches contact the conductive part 451 on the fixed disk 45, they are energized. The first trigger switch 441 is signal-connected to the first concentration measuring instrument 19 and the third concentration measuring instrument 37, and is used to periodically detect whether the solution concentration in the first storage tank 6 and the second storage tank 11 has reached the set value. The second trigger switch 442 and the third concentration measuring instrument 37 are also connected. The measuring instrument 25 is connected to the signal. It should be noted that after the gas in the water washing tower 2 is sprayed by the second spray head 13, the gas continues to flow upwards. At this time, water mist is sprayed from the spray head 24, which reabsorbs the acidic gas, forming a solution. The solution continuously accumulates in the water storage chamber 261 until the solution increases and the liquid level rises. After exceeding the height of the overflow baffle 27, the solution enters the overflow chamber 262. When the second trigger switch 442 is triggered, the second concentration measuring instrument 25 measures the concentration of the solution in the overflow chamber 262. If it detects that acidic gas still remains in the treated gas, i.e., the solution is still acidic, the concentration can be increased. If the spray water volume in the water washing tower is insufficient, it can be appropriately reduced to avoid excessive dilution of the hydrogen chloride solution. The third trigger switch 443 is connected to the sixth and seventh electrically controlled valves 29 and 31. After the above detection operation, the sixth and seventh electrically controlled valves 29 and 31 can be opened simultaneously to discharge the solution in the water storage chamber 261 and the overflow chamber 262. After discharge, the valves are closed to perform subsequent solution accumulation and concentration detection. Thus, when the corresponding switch is triggered and energized, the corresponding electrical equipment will automatically start. The time interval is reasonable, the operation is more convenient, and a higher concentration of acidic solution can be obtained.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A combined treatment device for the reuse of chlorinated organic waste gas to produce acid, characterized in that, include: A quench tower (1) is provided with an air inlet pipe (3) at its bottom. A gas duct (4) is provided between the top of the quench tower (1) and the bottom of the water washing tower (2), and an exhaust pipe (5) is provided at the top of the water washing tower (2). A first storage tank (6) is provided in the first storage tank (6), a first spray pipe (7) is provided in the first storage tank (6), the first spray pipe (7) has a section extending into the quench tower (1), and a plurality of first spray heads (8) are connected to the first spray pipe (7) in this section, a first circulation pipe (9) is connected between the quench tower (1) and the first storage tank (6), and a first electrically controlled valve (10) is provided on the first circulation pipe (9). The second storage tank (11) is provided with a second spray pipe (12), which extends into the water washing tower (2) and is connected to a plurality of second spray heads (13). A second circulation pipe (14) is connected between the second storage tank (11) and the water washing tower (2), and a second electrically controlled valve (15) is provided on the second circulation pipe (14). A third circulation pipe (16) is connected between the second storage tank (11) and the first storage tank (6), and a third electrically controlled valve (17) is provided at one end of the third circulation pipe (16) near the second storage tank (11). A fourth electrically controlled valve (18) is provided at one end of the third circulation pipe (16) near the first storage tank (6). A third concentration measuring instrument (37) is provided in the second storage tank (11). The first storage box (6) is connected to the collection box (21) through a drain pipe (20), and a fifth electrically controlled valve (22) is provided on the drain pipe (20). A guide pipe (23) is connected to the second spray pipe (12). The guide pipe (23) extends into the water washing tower (2). A spray head (24) is connected to the bottom of the guide pipe (23), and a second concentration measuring instrument (25) is fixedly installed. A water storage tank (26) is fixedly installed in the water washing tower (2). An overflow baffle (27) is fixedly installed in the water storage tank (26). The overflow baffle (27) divides the interior of the water storage tank (26) into a water storage chamber (261) and an overflow chamber (262). A first discharge pipe (28) is connected to the bottom of the water storage chamber (261). A sixth electrically controlled valve (29) is installed on the first discharge pipe (28). A second discharge pipe (30) is connected to the bottom of the overflow chamber (262). A seventh electrically controlled valve (31) is installed on the second discharge pipe (30). The first storage box (6) is equipped with a first concentration measuring instrument (19). The first storage box (6) is hinged with a rotating shaft (32). The rotating shaft (32) is fixed to the output end of a rotating motor (33). A single tooth gear (38) is fixedly sleeved on the rotating shaft (32). A complete gear (39) is meshed on the side of the single tooth gear (38). A transmission rod (40) is fixedly inserted through the center of the complete gear (39). A disc (42) is fixedly sleeved on the transmission rod (40). Three extension columns (43) are fixedly installed on the disc (42). A first trigger switch (441), a second trigger switch (442), and a third trigger switch (443) are fixedly installed at the ends of the three extension columns (43). A fixed disc (45) is installed on the side of the disc (42). A conductive part (451) is embedded in the fixed disc (45).

2. The combined treatment equipment for acid production and reuse of chlorinated organic waste gas according to claim 1, characterized in that: Multiple stirring blades (34) and stirring plates (35) are fixedly mounted on the rotating shaft (32).

3. A combined treatment device for acid production and reuse of chlorine-containing organic waste gas according to claim 2, characterized in that: A cleaning pad (36) is fixedly provided on one of the stirring plates (35), and the cleaning pad (36) can clean the first concentration measuring instrument (19) when it rotates with the rotating shaft (32).

4. A combined treatment device for acid production and reuse of chlorine-containing organic waste gas according to claim 1, characterized in that: The bottom of the transmission rod (40) is disposed in the bearing (41), and the bearing (41) is fixedly disposed on the top of the first storage box (6).

5. A combined treatment device for the reuse of chlorinated organic waste gas to produce acid, as described in claim 1, characterized in that: A support column (46) is fixedly installed at the bottom of the fixed plate (45), and the support column (46) is fixedly installed at the top of the first storage box (6).

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