A tail gas recovery treatment device for high-temperature chlorination purification of quartz sand

Abstract

A tail gas recovery treatment device for quartz sand high-temperature chlorination purification, comprising a collecting box, a partition is fixedly arranged in the collecting box, the partition separates the inside of the collecting box into a filtering cavity and a spraying cavity, an air inlet is formed between the side of the spraying cavity away from the air inlet pipe and the inner wall of the collecting box, an activated carbon filter screen is arranged in the filtering cavity, an exhaust pipe is arranged at the top of the filtering cavity, a water inlet pipe is rotatably arranged in the spraying cavity, a plurality of atomizing nozzles in communication with the inside of the water inlet pipe are arranged along the length direction of the water inlet pipe, a driving assembly for driving the water inlet pipe to reciprocating rotate is arranged on the collecting box, a drain pipe is arranged at the bottom of the spraying cavity, and a control valve is arranged on the drain pipe. The spraying range of the atomizing nozzles is increased, the combination efficiency of the water mist and the dust in the tail gas is improved, and the dead angle of the water mist sprayed by the atomizing nozzles is avoided, so that the purification of the dust in the tail gas by the water mist is more thorough.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand purification technology, specifically to a tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand. Background Technology

[0002] Chlorination purification of quartz sand is an effective method for removing impurities from quartz sand through a high-temperature chlorination reaction. Its basic principle is to utilize a chlorinating agent to chemically react with impurities in the quartz sand at high temperatures, thereby generating high-temperature harmful exhaust gases. These exhaust gases may contain pollutants such as dust, volatile organic compounds, and chlorides of other impurity elements. To treat these exhaust gases, a high-temperature chlorination purification exhaust gas recovery and treatment device for quartz sand is typically required.

[0003] For example, patent document CN212881607U, entitled "A Tail Gas Treatment Device for a Quartz Sand Drying Line," includes a gas collection tank, a guide plate, and a spraying device for collecting tail gas from a quartz sand drying line. The gas collection tank has an exhaust port at the top and an inlet and a drain port at the bottom. The guide plate is installed inside the gas collection tank, dividing it into a U-shaped channel that allows gas to pass through. The two ends of the U-shaped channel are connected to the inlet and exhaust port, respectively. The spraying device is located on the back of the guide plate or on the inner wall of the gas collection tank. Water mist is sprayed using the spraying device to promote dust settling.

[0004] However, in the process of using the above literature, although the water mist sprayed by the nozzle can settle the dust, the spraying range of the nozzle is relatively small, resulting in dead corners in the gas collection tank that cannot be sprayed, which reduces the binding efficiency of dust and water mist in the exhaust gas, thereby reducing the purification efficiency of dust in the exhaust gas. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand. This device solves the technical problem mentioned in the background technology, where the spray range of the nozzles is relatively small, resulting in dead zones in the gas collection tank that cannot be sprayed, thus reducing the binding efficiency of dust and water mist in the tail gas.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand includes a collection box. A partition is fixedly installed inside the collection box, dividing the interior of the collection box into a filtration chamber and a spray chamber. An air inlet pipe is provided on one side of the spray chamber. An air inlet is formed between the side of the partition away from the air inlet pipe and the inner wall of the collection box. An activated carbon filter screen is provided inside the filtration chamber. An exhaust pipe is provided at the top of the filtration chamber. A water inlet pipe is rotatably installed inside the spray chamber. Multiple atomizing nozzles communicating with the interior of the water inlet pipe are provided along its length. A drive assembly is provided on the collection box to drive the water inlet pipe to reciprocate. A drain pipe is provided at the bottom of the spray chamber, and a control valve is provided on the drain pipe.

[0008] Working Principle: When the fan is started, it provides power to drive the exhaust gas into the spray chamber. The water mist sprayed from the atomizing nozzles combines with the dust in the exhaust gas, forcing the dust to fall to the bottom of the spray chamber. Simultaneously, the drive assembly rotates the water inlet pipe, which in turn rotates the atomizing nozzles, increasing the spray range. After the dust in the exhaust gas is purified, it enters the filter chamber. The activated carbon filter adsorbs volatile organic compounds and chlorides of other impurities in the exhaust gas. The filtered exhaust gas is then discharged through the exhaust pipe.

[0009] The beneficial effects of this utility model are as follows: Because an activated carbon filter is installed inside the filtration chamber, and a water inlet pipe is rotatably installed inside the spray chamber, with multiple atomizing nozzles connected to the inlet pipe along its length, and a drive assembly that drives the water inlet pipe to rotate back and forth on the collection box, during use, the fan provides power to drive the exhaust gas into the spray chamber. The water mist sprayed from the atomizing nozzles combines with the dust in the exhaust gas, forcing the dust to fall to the bottom of the spray chamber. Simultaneously, the drive assembly drives the water inlet pipe to rotate back and forth, which in turn drives the atomizing nozzles to rotate back and forth, thereby increasing the spraying range of the atomizing nozzles, improving the combination efficiency of the water mist with the dust in the exhaust gas, and avoiding dead zones in the water mist sprayed from the atomizing nozzles, making the purification of dust in the exhaust gas more thorough.

[0010] Furthermore, a vertically arranged guide plate is fixedly installed inside the spray chamber, and the top of the guide plate is fixedly connected to the bottom of the partition.

[0011] Furthermore, there are two water inlet pipes, and the two water inlet pipes are symmetrically arranged about the guide plate.

[0012] Furthermore, the drive assembly includes an electric push rod and two gears. A fixed plate is fixedly installed on one side of the collection box, the electric push rod is fixedly installed on the fixed plate, a moving rod is fixedly installed at the output end of the electric push rod, racks are fixedly installed at both ends of the moving rod, and the two gears are respectively fixedly installed on the corresponding water inlet pipes, and the two gears mesh with the corresponding racks respectively.

[0013] Furthermore, a support plate is fixedly installed on one side of the collection box, and a fan is fixedly installed on the support plate. The output end of the fan is connected to the air inlet pipe.

[0014] Furthermore, the activated carbon filter screen has a wavy shape.

[0015] Furthermore, the filter chamber is symmetrically provided with guide grooves, and guide blocks are fixedly provided on both sides of the activated carbon filter screen. The guide blocks slide with the corresponding guide grooves. A through groove is provided on one side of the filter chamber, and a baffle adapted to it is provided in the through groove. The baffle is detachably connected to the through groove, and one side of the baffle is detachably connected to the activated carbon filter screen.

[0016] Furthermore, the bottom of the spray chamber is funnel-shaped, and a support frame is fixedly installed at the bottom of the collection box along its outline. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a perspective view of the activated carbon filter screen of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Collection box; 101. Spray chamber; 102. Filter chamber; 2. Exhaust pipe; 3. Drain pipe; 4. Control valve; 5. Support frame; 6. Support plate; 7. Fan; 8. Fixing plate; 9. Electric push rod; 10. Moving rod; 11. Rack; 12. Gear; 13. Water inlet pipe; 14. Through groove; 15. Baffle; 16. Partition; 17. Air inlet pipe; 18. Activated carbon filter; 19. Guide groove; 20. Guide plate; 21. Atomizing nozzle; 22. Guide block; 23. Connecting plate. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-3As shown, a tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand includes a collection box 1. A horizontally arranged partition 16 is fixedly installed inside the collection box 1, dividing the interior of the collection box 1 into a filter chamber 102 and a spray chamber 101. The filter chamber 102 is located above the spray chamber 101. An air inlet is formed between the side of the partition 16 away from the air inlet pipe 17 and the inner wall of the collection box 1, facilitating the entry of gas from the spray chamber 101 into the filter chamber 102. An air inlet pipe 17 communicating with the interior of the spray chamber 101 is fixedly installed on one side. A support plate 6 is fixedly installed on one side of the collection box 1, and a fan 7 is fixedly installed on the top of the support plate 6. The output end of the fan 7 is connected to the air inlet pipe 17, and the input end of the fan 7 is connected to an external exhaust gas pipe. The power provided by the fan 7 sends the exhaust gas into the spray chamber 101, while simultaneously allowing the exhaust gas requiring filtration to smoothly enter the filter chamber 102.

[0023] An activated carbon filter 18 is installed inside the filter chamber 102. The activated carbon filter 18 is wavy in shape to increase the contact area between the activated carbon filter 18 and the exhaust gas, thereby improving the filtration efficiency of the activated carbon filter 18. An exhaust pipe 2 is installed at the top of the filter chamber 102. The activated carbon filter 18 adsorbs volatile organic compounds and chlorides of other impurities in the exhaust gas, and the filtered gas is discharged through the exhaust pipe 2.

[0024] A vertically arranged guide plate 20 is fixedly installed inside the spray chamber 101, with its top end fixedly connected to the bottom middle of the partition plate 16. Two horizontally arranged water inlet pipes 13 are rotatably installed inside the spray chamber 101, and the two water inlet pipes 13 are symmetrically arranged about the guide plate 20. Multiple atomizing nozzles 21, communicating with the interior of the water inlet pipes 13, are fixedly installed along their length, and the multiple atomizing nozzles 21 are arranged at equal intervals. Both ends of the water inlet pipes 13 pass through the inner wall of the spray chamber 101, and one end of the water inlet pipes 13 extends to the outside of the spray chamber 101. The end of the water inlet pipe 13 located outside the spray chamber 101 is connected to a rotary joint (not shown in the figure), which is connected to an external water supply pipe. By setting up the guide plate 20, the flow rate of the exhaust gas is reduced, the combination time of dust and water mist in the exhaust gas is increased, and the dust purification effect is improved.

[0025] In other embodiments, since the exhaust gas concentration is relatively high on the side of the spray chamber 101 near the air inlet pipe 17, the number of atomizing nozzles 21 on the two water inlet pipes 13 is adjusted according to actual needs, so that the number of atomizing nozzles 21 installed on the water inlet pipe 13 near the drain pipe 3 is greater than the number of atomizing nozzles 21 on the other water inlet pipe 13, thereby further increasing the efficiency of dust purification in the exhaust gas.

[0026] like Figure 1As shown, a drive assembly for reciprocating rotation of the water inlet pipe 13 is installed on the collection box 1. The drive assembly includes an electric push rod 9 and two gears 12. A fixing plate 8 is fixedly installed on one side of the collection box 1, and the electric push rod 9 is fixedly installed on the fixing plate 8 and is arranged vertically. A moving rod 10 is fixedly installed at the output end of the electric push rod 9. A rack 11 is fixedly installed at both ends of the moving rod 10. The two gears 12 are respectively fixedly installed at the ends of the corresponding water inlet pipes 13 located outside the spray chamber 101, and the two gears 12 mesh with the corresponding racks 11.

[0027] A support frame 5 is fixedly installed along the bottom contour of the spray chamber 101 to support the entire device. The bottom of the spray chamber 101 is funnel-shaped, and a drain pipe 3 is installed at the lowest point of the bottom of the spray chamber 101 to facilitate the flow of sewage into the drain pipe 3 and its discharge. A control valve 4 is installed on the drain pipe 3 to prevent exhaust gas from being discharged through the drain pipe 3. When the bottom of the spray chamber 101 is higher than the preset water level, the control valve 4 is opened to facilitate the discharge of sewage, thereby preventing sewage from obstructing the passage of exhaust gas between the bottom of the spray chamber 101 and the guide plate 20.

[0028] like Figures 1-3 As shown, symmetrical guide grooves 19 are provided inside the filter chamber 102. Guide blocks 22 are fixedly installed on both sides of the activated carbon filter screen 18, and the guide blocks 22 slide in cooperation with the corresponding guide grooves 19. A through groove 14 is provided on one side of the filter chamber 102. A baffle 15 adapted to the through groove 14 is installed inside the through groove 14. A sealing ring is bonded to the baffle 15 along its circumference to increase the sealing between the baffle 15 and the through groove 14 and prevent gas leakage. The baffle 15 and the through groove 14 are detachably connected. Connecting plates 23 are fixedly installed on both sides of the through groove 14 and are fixedly connected to the collection box 1 by bolts. One side of the baffle 15 is detachably connected to the activated carbon filter screen 18, and the activated carbon filter screen 18 is fixedly connected to the baffle 15 by bolts.

[0029] Working principle:

[0030] In use, the water inlet pipe 13 is connected to an external water source via a rotary joint, allowing water to flow into the pipe and be sprayed as mist through the atomizing nozzle 21. Simultaneously, the external pipe used for exhaust gas discharge is connected to the air inlet of the fan 7. The fan 7 is then started, providing power to drive the exhaust gas into the spray chamber 101. The water mist sprayed from the atomizing nozzle 21 combines with the dust in the exhaust gas, forcing the dust to settle to the bottom of the spray chamber 101. Under the action of the guide plate 20, the exhaust gas flows from the side of the spray chamber 101 closest to the air inlet pipe 17, passes through the bottom of the guide plate 20, and enters the other side of the spray chamber 101, thereby reducing the exhaust gas flow velocity and increasing the combination time between the dust and water mist in the exhaust gas.

[0031] Activate the electric push rod 9, causing its output end to move up and down continuously. The output end of the electric push rod 9 drives the rack 11 to move up and down via the moving rod 10. The rack 11 drives the corresponding gear 12 to rotate back and forth. The gear 12 drives the water inlet pipe 13 to rotate back and forth. The water inlet pipe 13 drives the atomizing nozzle 21 to rotate back and forth, thereby increasing the spraying range of the atomizing nozzle 21, improving the combination efficiency of water mist and dust in the exhaust gas, and avoiding dead zones in the water mist sprayed by the atomizing nozzle 21. The water mist purifies the dust in the exhaust gas more thoroughly.

[0032] Driven by the fan 7, the dust in the exhaust gas within the spray chamber 101 is purified and then smoothly enters the filter chamber 102 through the air inlet formed between the partition 16 and the inner wall of the collection box 1. The activated carbon filter 18 adsorbs volatile organic compounds and chlorides of other impurities in the exhaust gas, preventing harmful substances from polluting the environment. The filtered exhaust gas is then discharged through the exhaust pipe 2. Simultaneously, the exhaust gas is cooled by water mist, preventing the high-temperature exhaust gas from reducing the lifespan of the activated carbon filter.

[0033] When the activated carbon filter 18 needs to be replaced, remove the bolts from the connecting plates 23 on both sides of the baffle 15, pull the baffle 15 outward to slide the activated carbon filter 18 out of the filter chamber 102, and then remove the bolts connecting the activated carbon filter 18 and the baffle 15 to replace the activated carbon filter 18.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand, comprising a collection box (1), characterized in that, The collection box (1) is fixedly provided with a partition (16), which divides the interior of the collection box (1) into a filter chamber (102) and a spray chamber (101). An air inlet pipe (17) is provided on one side of the spray chamber (101). An air inlet is formed between the side of the partition (16) away from the air inlet pipe (17) and the inner wall of the collection box (1). An activated carbon filter screen (18) is provided in the filter chamber (102). An exhaust pipe (2) is provided at the top of the filter chamber (102). A water inlet pipe (13) is rotatably provided in the spray chamber (101). Multiple atomizing nozzles (21) communicating with the interior of the water inlet pipe (13) are provided along its length. A drive assembly that drives the water inlet pipe (13) to rotate back and forth is provided on the collection box (1). A drain pipe (3) is provided at the bottom of the spray chamber (101). A control valve (4) is provided on the drain pipe (3).

2. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 1, characterized in that, A vertically arranged guide plate (20) is fixedly installed inside the spray chamber (101), and the top of the guide plate (20) is fixedly connected to the bottom of the partition plate (16).

3. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 2, characterized in that, There are two water inlet pipes (13), and the two water inlet pipes (13) are arranged symmetrically about the guide plate (20).

4. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 3, characterized in that, The drive assembly includes an electric push rod (9) and two gears (12). A fixed plate (8) is fixedly installed on one side of the collection box (1). The electric push rod (9) is fixedly installed on the fixed plate (8). A moving rod (10) is fixedly installed at the output end of the electric push rod (9). A rack (11) is fixedly installed at both ends of the moving rod (10). The two gears (12) are fixedly installed on the corresponding water inlet pipes (13) respectively, and the two gears (12) mesh with the corresponding racks (11) respectively.

5. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 1, characterized in that, A support plate (6) is fixedly installed on one side of the collection box (1), and a fan (7) is fixedly installed on the support plate (6). The output end of the fan (7) is connected to the air inlet pipe (17).

6. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 1, characterized in that, The activated carbon filter (18) is wavy in shape.

7. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 1, characterized in that, The filter chamber (102) is symmetrically provided with guide grooves (19), and guide blocks (22) are fixedly provided on both sides of the activated carbon filter (18). The guide blocks (22) and the corresponding guide grooves (19) are slidably engaged. A through groove (14) is provided on one side of the filter chamber (102). A baffle (15) adapted to it is provided in the through groove (14). The baffle (15) is detachably connected to the through groove (14), and one side of the baffle (15) is detachably connected to the activated carbon filter (18).

8. The tail gas recovery and treatment device for high-temperature chlorination purification of quartz sand according to claim 1, characterized in that, The bottom of the spray chamber (101) is funnel-shaped, and a support frame (5) is fixedly installed at the bottom of the collection box (1) along its outline.

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