Titanium dioxide production acidolysis tail gas treatment mechanism

Abstract

The utility model discloses an acidolysis tail gas treatment mechanism for titanium dioxide production, which belongs to the field of titanium dioxide production and comprises a spray tower, a spray disc, a flow guide component, a gas inlet pipe, a gas outlet pipe and a gas quality detector, a cavity dividing plate is vertically arranged in the middle of the interior of the spraying tower, a flow dividing cavity and a primary treatment cavity integrally sleeved with the flow guide assembly, the spraying disc and the air inlet pipe are arranged in the spraying tower and located on the left side and the right side of the cavity dividing plate respectively, and a conveying plate is arranged in the flow dividing cavity and located below the spraying disc; a plurality of reaction plates are arranged between the conveying plate and the cavity dividing plate as well as between the conveying plate and the spraying tower; a graded reflux assembly is arranged at the gas outlet end of the gas quality detector; according to the acidolysis tail gas treatment mechanism, the circulation of tail gas treatment in the acidolysis tail gas treatment mechanism is improved, stage reflux treatment of tail gas is facilitated, and the tail gas treatment efficiency and sufficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium dioxide production, in particular to a titanium dioxide production acid hydrolysis tail gas treatment mechanism. Background Art

[0002] Titanium dioxide is an important inorganic chemical product, which is widely used in coating, ink, papermaking, plastic rubber, chemical fiber, ceramics and other industries. During the production process, the waste gas treatment structure is installed in the titanium dioxide acid gas production equipment to purify and treat harmful gases.

[0003] The existing acid hydrolysis tail gas treatment mechanism for titanium dioxide production will pass the tail gas into an alkaline tank, neutralize it by spraying alkaline liquid in an alkali cooling tower, and extend the reaction time of the tail gas by rotating the angle of the guide plate in the spray tower. The detection of the gas quality detector can facilitate the re-reflux treatment of the waste gas.

[0004] After searching, the Chinese patent authorization number CN218981066U discloses a titanium dioxide production acid hydrolysis tail gas treatment mechanism, including a spray tower for spray treatment, wherein a plurality of rows of parallel-arranged guide components are installed inside the spray tower, and the guide components are composed of a plurality of rotatable guide plates. An outlet pipe is installed near the top of the outside of the spray tower, and a three-way pipe is installed on the outlet pipe, and one of the outlets of the three-way pipe is connected to the bottom of the spray tower through a reflux pipe; the utility model arranges a guide component inside the spray tower, and the guide plates in the guide component can slow down the floating speed of the exhaust gas and the falling speed of the spray liquid, thereby increasing the time of the gas-liquid reaction, and at the same time, the exhaust gas treated by the spray tower is refluxed to the spray tower for reprocessing under the control of the three-way pipe, so as to ensure that the gas and the spray liquid react fully.

[0005] The acidolysis exhaust gas treatment mechanism in the above patent has the following shortcomings: 1. The reflux treatment steps of the acidolysis exhaust gas are relatively cumbersome, which affects the circulation of the treated exhaust gas; 2. During the reflux treatment, the acidolysis exhaust gas will be integrated into the untreated exhaust gas in the spray tower, increasing the processing burden of the treatment mechanism and easily causing insufficient exhaust gas treatment; therefore, a titanium dioxide production acidolysis exhaust gas treatment mechanism is proposed to solve the problem. Utility Model Content

[0006] The utility model aims to solve the problems of poor fluidity and insufficient tail gas treatment in the prior art of reflux treatment, and proposes a titanium dioxide production acid hydrolysis tail gas treatment mechanism.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A titanium dioxide production acid hydrolysis tail gas treatment mechanism, comprising a spray tower, a spray plate and a guide assembly on the upper side of the spray tower, an air inlet pipe on the lower side of the spray tower, and an air outlet pipe and a gas quality detector at the upper end of the outer side of the spray tower. A chamber dividing plate is vertically arranged in the middle of the interior of the spray tower, and a diverter chamber and a primary treatment chamber integrated with the guide assembly, the spray plate and the air inlet pipe are respectively arranged on the left and right sides of the chamber dividing plate in the spray tower, a transfer plate is arranged in the diverter chamber below the spray plate, and a plurality of reaction plates are arranged between the transfer plate, the chamber dividing plate and the spray tower, a graded reflux assembly is arranged at the air outlet end of the gas quality detector, a first reflux pipe is arranged between the graded reflux assembly and the diverter chamber, and a second reflux pipe is arranged between the graded reflux assembly and the primary treatment chamber.

[0009] As a preferred technical solution of the present application, the upper end of the cavity plate extends to the upper side of the flow guide assembly, and an upper flow chamber is provided between the cavity plate and the spray plate.

[0010] As a preferred technical solution of the present application, the lower end of the chamber plate is fixedly connected to the spray tower, and the lower end of the spray tower is provided with a waste liquid collection pipe which is through-connected to the primary treatment chamber and the diversion chamber.

[0011] As a preferred technical solution of the present application, the transmission plate and the chamber plate are arranged in parallel, a lower flow cavity is arranged between the transmission plate and the spray tower, and a plurality of through openings are evenly opened on the reaction plate.

[0012] As a preferred technical solution of the present application, the graded reflux assembly includes a four-way pipe arranged at the gas outlet end of the gas quality detector, a first valve arranged at one end of the four-way pipe close to the first reflux pipe, a second valve arranged at one end of the four-way pipe close to the second reflux pipe, and an exhaust valve arranged at the opposite end of the gas quality detector.

[0013] As a preferred technical solution of the present application, the four-way pipe is a "cross"-shaped tubular structure, and connecting lines are provided between the first valve, the second valve and the exhaust valve and the gas quality detector.

[0014] As a preferred technical solution of the present application, it also includes a post-processing box, and the gas outlet end of the discharge valve is connected to the post-processing box.

[0015] As a preferred technical solution of the present application, a data display module and a switch control module connected to the first valve, the second valve and the discharge valve are arranged on the top of the gas quality detector.

[0016] Compared with the prior art, the utility model provides a titanium dioxide production acid hydrolysis tail gas treatment mechanism, which has the following beneficial effects:

[0017] 1. The titanium dioxide production acid hydrolysis tail gas treatment mechanism is convenient for integrating the tail gas treatment mechanism in the existing spray tower into the primary treatment chamber by means of the arranged chamber plate, the transmission plate, the diversion chamber and the reaction plate. By arranging the secondary tail gas treatment structure in the spray tower, the circulating tail gas is more fully and comprehensively reacted with the alkaline solution, the contact area between the tail gas and the reaction solution is increased, and the treatment time of the tail gas treatment is increased. Moreover, by arranging the upper flow chamber and the lower flow chamber in the diversion chamber at the upper and lower positions, the tail gas is conveniently transported upward, the tail gas treatment area and the flowability of the tail gas treatment are increased, and the tail gas is conveniently discharged quickly;

[0018] 2. The titanium dioxide production acid hydrolysis tail gas treatment mechanism, through the set graded reflux components, the first reflux pipe and the second reflux pipe, is convenient for utilizing the tail gas quality detection data of the existing gas quality detector, and adding a reflux classification processing mechanism on the tail gas treatment mechanism. Through the use of the data display module and the switch control module on the gas quality detector, it is convenient to compare the detection data of the gas quality detector with the secondary value, the primary value and the tail gas qualified value, and it is convenient to pass the tail gas with a detection value between the secondary value and the primary value into the diversion cavity for secondary tail gas treatment again, and pass the tail gas with a detection value between the secondary value and the tail gas qualified value into the primary tail gas treatment cavity for primary and secondary tail gas treatment, and discharge the tail gas with qualified detection values ​​into the post-treatment box for the next stage of tail gas treatment and discharge, thereby increasing the tail gas treatment efficiency, saving the time of tail gas reflux treatment, and increasing the quality of tail gas reflux treatment, and having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a titanium dioxide production acid decomposition tail gas treatment mechanism proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a spray tower and a second reflux pipe in a titanium dioxide production acid hydrolysis tail gas treatment mechanism proposed by the utility model;

[0021] Figure 3 This is a structural cross-sectional view of a spray tower in a titanium dioxide production acid decomposition tail gas treatment mechanism proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a gas quality detector and a graded reflux component in a titanium dioxide production acid hydrolysis tail gas treatment mechanism proposed by the utility model;

[0023] Figure 5 The utility model provides a schematic diagram of the connection structure between a gas quality detector and a graded reflux component in a titanium dioxide production acid hydrolysis tail gas treatment mechanism.

[0024] In the figure:

[0025] 1. Spray tower; 2. Guide assembly; 3. Inlet pipe; 4. Divider plate; 5. Transfer plate; 6. Diverter chamber; 7. Reaction plate; 8. Through port; 9. Exit pipe; 10. Gas quality detector; 11. Graded reflux assembly; 12. First reflux pipe; 13. Second reflux pipe; 14. Spray plate; 15. Upper flow chamber; 16. Lower flow chamber; 17. Four-way pipe; 18. First valve; 19. Second valve; 20. Data display module; 21. Switch control module; 22. Connecting wire; 23. Discharge valve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] Example:

[0028] Reference Figure 1 A titanium dioxide production acid hydrolysis tail gas treatment mechanism comprises a spray tower 1, a spray plate 14 and a guide component 2 on the upper side of the spray tower 1, an air inlet pipe 3 on the lower side of the spray tower 1, and an air outlet pipe 9 and a gas quality detector 10 on the upper end of the outer side of the spray tower 1. A chamber dividing plate 4 is vertically arranged in the middle of the spray tower 1, and a diversion chamber 6 and a primary treatment chamber integrated with the guide component 2, the spray plate 14 and the air inlet pipe 3 are respectively arranged on the left and right sides of the chamber dividing plate 4 in the spray tower 1. A transmission plate 5 is arranged below the spray plate 14 in the diversion chamber 6, and a plurality of reaction plates 7 are arranged between the transmission plate 5, the chamber dividing plate 4 and the spray tower 1. A graded reflux component 11 is arranged at the gas outlet end of the gas quality detector 10, a first reflux pipe 12 is arranged between the graded reflux component 11 and the diversion chamber 6, and a second reflux pipe 13 is arranged between the graded reflux component 11 and the primary treatment chamber.

[0029] The spray tower 1, guide assembly 2, air inlet pipe 3, air outlet pipe 9, gas quality detector 10 and spray plate 14 in this embodiment are all existing mechanisms of the acid hydrolysis tail gas treatment mechanism for titanium dioxide production. The guide assembly 2 is located between the air inlet pipe 3 and the spray plate 14, and the air outlet pipe 9 is connected to the gas quality detector 10. The tail gas is introduced into the interior of the spray tower 1 through the air inlet pipe 3. The spray plate 14 is used to introduce alkaline liquid into the interior of the spray tower 1. The power drive of the regulating motor in the guide assembly 2 can drive the pulley to rotate, and can drive the guide plate inside the spray tower 1 to rotate at an angle, so as to block and reduce the speed of the treated tail gas and increase the treatment time. In this embodiment, a cavity is formed inside the spray tower 1. The use of plate 4 and the positioning of the guide component 2 and the dividing chamber plate 4 on the left side of the dividing chamber plate 4 in the primary treatment chamber facilitate the equipment to perform primary treatment on the exhaust gas while extending the exhaust gas reaction time, and divide the interior of the spray tower 1 into two treatment intervals, thereby increasing the exhaust gas treatment adequacy and efficiency, and through the setting of the graded reflux component 11 at the outlet end of the gas quality detector 10, the graded reflux component 11 can be connected to the diversion chamber 6 through the first reflux pipe 12, and the graded reflux component 11 can be connected to the primary treatment chamber through the second reflux pipe 13, so as to realize different levels of reflux treatment of the exhaust gas, thereby solving the problem of slow treatment efficiency and inability to realize recycling treatment of the exhaust gas during reflux treatment of the exhaust gas.

[0030] The upper end of the cavity plate 4 extends to the upper side of the flow guide assembly 2 , and an upper flow cavity 15 is provided between the cavity plate 4 and the spray plate 14 .

[0031] Through the setting of the upward flow chamber 15, it is convenient to connect the primary treatment chamber with the diversion chamber 6, so that the exhaust gas in the primary treatment chamber can be passed into the diversion chamber 6 for further treatment after treatment, thereby increasing the reaction time and reaction sufficiency of the exhaust gas with the alkaline solution and the treatment solution, improving the treatment quality of the exhaust gas, and reducing the reflux treatment of the exhaust gas.

[0032] In addition, the lower end of the chamber dividing plate 4 is fixedly connected to the spray tower 1 , and the lower end of the spray tower 1 is provided with a waste liquid collecting pipe which is connected to the primary processing chamber and the diversion chamber 6 .

[0033] When the spray tower 1 is in use, the exhaust gas introduced into the air inlet pipe 3 enters the primary treatment chamber on the left side of the spray tower 1, and then enters the diversion chamber 6 through the upper flow chamber 15. The exhaust gas passes through the diversion chamber plate 4 and the middle part of the lower flow chamber 16 and then enters the lower flow chamber 16 and the middle space of the spray tower 1. It is worth noting that the waste liquid collection pipe is an existing structure of the exhaust gas treatment mechanism. Through the through connection between the waste liquid collection pipe and the diversion chamber 6, it can collect and discharge the waste liquid inside the diversion chamber 6 at the same time.

[0034] It should be noted that the transmission plate 5 and the chamber dividing plate 4 are arranged in parallel, a lower flow chamber 16 is arranged between the transmission plate 5 and the spray tower 1 , and a plurality of through openings 8 are evenly opened on the reaction plate 7 .

[0035] By setting the lower flow chamber 16, it is convenient to set a connecting chamber on the lower side of the diversion chamber 6, so as to adjust the flow direction of the exhaust gas upward, so as to facilitate the exhaust gas to be discharged from the exhaust pipe 9, and at the same time increase the treatment sufficiency and treatment time of the exhaust gas in the spray tower 1, and improve the treatment quality of the exhaust gas. During the treatment of the exhaust gas by the spray tower 1, when the spray disc 14 sprays the alkaline solution into the interior of the spray tower 1, the solution can also be sprayed on the outer surface of the multiple reaction plates 7. By opening multiple openings 8 on the reaction plates 7, the exhaust gas can circulate through the lower flow chamber 16, while increasing the contact area between the exhaust gas and the solution.

[0036] Reference Figure 4 As a preferred embodiment, on the basis of the above-mentioned method, further, the graded reflux assembly 11 includes a four-way pipe 17 arranged at the gas outlet end of the gas quality detector 10, a first valve 18 arranged at one end of the four-way pipe 17 close to the first reflux pipe 12, a second valve 19 arranged at one end of the four-way pipe 17 close to the second reflux pipe 13, and a discharge valve 23 arranged at the opposite end of the gas quality detector 10.

[0037] By using the four-way pipe 17, the exhaust gas output from the gas quality detector 10 can be divided into three directions. By setting the first valve 18, the second valve 19 and the discharge valve 23 on the four-way pipe 17, the graded reflux component 11 can discharge the exhaust gas into pipes in three different directions.

[0038] Reference Figure 1 and Figure 5 As a preferred embodiment, on the basis of the above-mentioned method, further, the four-way pipe 17 is a "cross"-shaped tubular structure, and connecting lines 22 are provided between the first valve 18, the second valve 19 and the discharge valve 23 and the gas quality detector 10. In addition, the titanium dioxide production acid hydrolysis tail gas treatment mechanism also includes a post-treatment box, and the gas outlet end of the discharge valve (23) is connected to the post-treatment box.

[0039] By applying the switch control technology of the existing electric valve and using it through the connecting line 22, it is convenient for the processing mechanism to use the detection value of the gas quality detector 10 to control the switch use of the three valves, so that the first valve 18 can pass the exhaust gas that is easy to reflux through the first reflux pipe 12 into the diversion chamber 6, and the second valve 19 can pass the exhaust gas that is more difficult to reflux through the second reflux pipe 13 into the primary processing chamber, and the discharge valve 23 can pass the qualified exhaust gas into the post-processing box of the existing exhaust gas treatment mechanism for the next stage of exhaust gas treatment and discharge, thereby realizing the differentiated treatment of exhaust gas output, facilitating the rapid reflux treatment of exhaust gases of different qualities, reducing the reflux treatment time of exhaust gas, increasing the cyclicity of exhaust gas treatment, and improving the exhaust gas treatment efficiency.

[0040] It should be noted that a data display module 20 and a switch control module 21 connected to the first valve 18 , the second valve 19 and the discharge valve 23 are disposed on the top of the gas quality detector 10 .

[0041] The data display module 20 uses the data on the display screen of the existing gas quality detector 10 to display, so that external staff can grasp the detection quality of the exhaust gas through the data display module 20, and three switch values ​​are set in the switch control module 21, namely the secondary value, the primary value and the exhaust gas qualified value. The three switch values ​​of the detected exhaust gas data are compared and judged through the switch control module 21, so that the graded reflux component 11 uses the first valve 18, the second valve 19 and the discharge valve 23 respectively, to pass the exhaust gas with seriously unqualified quality into the primary treatment chamber, to pass the exhaust gas with generally unqualified quality into the diversion chamber 6, and to pass the qualified exhaust gas into the post-treatment box for the next stage of exhaust treatment, so as to realize the intelligent and classified exhaust treatment and increase the rate and quality of the exhaust reflux treatment.

[0042] Specifically, the utility model applies the existing gas detection technology for exhaust gas treatment when treating the exhaust gas of the acidolysis exhaust gas treatment mechanism, and sets the secondary value, primary value and exhaust gas qualified value on the switch control module 21 of the gas quality detector 10; then, the existing acidolysis exhaust gas treatment technology is applied, the exhaust gas is first introduced into the primary treatment chamber on the left side of the spray tower 1 through the air inlet pipe 3, and the exhaust gas is first subjected to primary treatment by spraying the alkaline solution in the spray plate 14. The treated exhaust gas can pass through the upper flow cavity 15 and enter between the chamber plate 4 and the transmission plate 5. The exhaust gas flows downward through the multiple openings 8 opened on the reaction plate 7, and the exhaust gas can also be treated at the same time by the alkaline solution sprayed on the reaction plate 7. The treated exhaust gas is introduced into the lower end of the transmission plate 5, and the exhaust gas is transported upward through the opening of the lower flow cavity 16 to realize the circulation of the treated exhaust gas, and then, it is treated again through the multiple reaction plates 7 between the spray tower 1 and the transmission plate 5, and when it is introduced to the gas quality control system, the exhaust gas is further treated. The gas quality detector 10 is used for transportation; by applying the existing air quality detection technology, the gas quality detector 10 can detect the treated exhaust gas, and use the switch control module 21 to compare the detection data with the set data. When the exhaust gas detection value is between the secondary value and the primary value, the first valve 18 is opened, and the exhaust gas is passed into the primary treatment chamber through the first reflux pipe 12, and the secondary exhaust gas treatment is performed again; when the detection value is greater than the primary value, the second valve 19 is opened, and the exhaust gas is passed into the primary exhaust gas treatment chamber using the second reflux pipe 13, and the primary and secondary exhaust gas treatment is performed; when the detection value is greater than the qualified value of the exhaust gas, the discharge valve 23 is opened, and the exhaust gas is discharged into the post-treatment box, and the next stage of exhaust gas treatment and discharge is performed, and the reflux classification treatment mechanism of the exhaust gas treatment mechanism is increased, which is convenient for the intelligent reflux treatment of the exhaust gas reflux treatment, increases the exhaust gas treatment efficiency, saves the time of the exhaust gas reflux treatment, and increases the quality of the exhaust gas reflux treatment, which is practical.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A titanium dioxide production acid hydrolysis tail gas treatment mechanism, comprising a spray tower (1), a spray plate (14) and a flow guide assembly (2) arranged on the upper side of the spray tower (1), an air inlet pipe (3) arranged on the lower side of the spray tower (1), and an air outlet pipe (9) and a gas quality detector (10) arranged on the upper end of the outer side of the spray tower (1), characterized in that: A chamber dividing plate (4) is vertically arranged in the middle of the spray tower (1); a flow dividing chamber (6) and a primary processing chamber integrated with a flow guide component (2), a spray plate (14) and an air inlet pipe (3) are respectively arranged on the left and right sides of the chamber dividing plate (4) inside the spray tower (1); a transmission plate (5) is arranged inside the flow dividing chamber (6) below the spray plate (14); a plurality of reaction plates (7) are arranged between the transmission plate (5), the chamber dividing plate (4) and the spray tower (1); a graded reflux component (11) is arranged at the gas outlet end of the gas quality detector (10); a first reflux pipe (12) is arranged between the graded reflux component (11) and the flow dividing chamber (6); and a second reflux pipe (13) is arranged between the graded reflux component (11) and the primary processing chamber.

2. The titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 1, characterized in that: The upper end of the cavity dividing plate (4) extends to the upper side of the flow guide assembly (2), and an upper flow chamber (15) is provided between the cavity dividing plate (4) and the spray plate (14).

3. The titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 1, characterized in that: The lower end of the chamber dividing plate (4) is fixedly connected to the spray tower (1), and the lower end of the spray tower (1) is provided with a waste liquid collection pipe which is connected to the primary treatment chamber and the diversion chamber (6).

4. The titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 1, characterized in that: The transmission plate (5) is arranged in parallel with the chamber dividing plate (4), a lower flow chamber (16) is arranged between the transmission plate (5) and the spray tower (1), and a plurality of openings (8) are evenly arranged on the reaction plate (7).

5. The titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 1, characterized in that: The graded reflux assembly (11) comprises a four-way pipe (17) arranged at the gas outlet end of the gas quality detector (10), a first valve (18) arranged at one end of the four-way pipe (17) close to the first reflux pipe (12), a second valve (19) arranged at one end of the four-way pipe (17) close to the second reflux pipe (13), and a discharge valve (23) arranged at the opposite end of the gas quality detector (10).

6. A titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 5, characterized in that: The four-way pipe (17) is in a "cross"-shaped tubular structure, and connecting lines (22) are provided between the first valve (18), the second valve (19) and the discharge valve (23) and the gas quality detector (10).

7. A titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 6, characterized in that: The titanium dioxide production acid hydrolysis tail gas treatment mechanism also includes a post-treatment box, and the gas outlet end of the discharge valve (23) is connected to the post-treatment box.

8. The titanium dioxide production acid hydrolysis tail gas treatment mechanism according to claim 7, characterized in that: A data display module (20) and a switch control module (21) connected to the first valve (18), the second valve (19) and the discharge valve (23) are arranged on the top of the gas quality detector (10).

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