Waste gas absorption device for liquid chlorine storage tank

Abstract

The utility model belongs to the technical field of waste gas absorption, and particularly relates to a liquid chlorine storage tank waste gas absorption device which comprises an outer cavity, a cylinder is mounted at the edge of the top side of the outer cavity, a pore plate is mounted on the inner wall of the cylinder, wet starch-potassium iodide test paper is mounted on the top side of the pore plate, and a camera is mounted on the top side of the cylinder in a penetrating manner. A connecting cavity is formed in the outer side of the middle end of the air conveying pipe, a negative pressure motor is installed in the connecting cavity, and three fan blades are installed at the output end of the negative pressure motor. When the liquid chlorine storage tank body leaks chlorine, the leaked chlorine diffuses into the outer cavity and penetrates through the pore plate to be in contact with the wet starch-potassium iodide test paper, the test paper turns blue due to the oxidability of the chlorine, so that chlorine leakage is indicated, the camera monitors the state of the test paper in real time, and once it is found that the test paper turns blue, the test paper stops working. The camera transmits a signal to the control panel, and the control panel starts the negative pressure motor, so that the chlorine leakage condition is found in time, and the negative pressure motor is automatically started to perform gas suction treatment.

Description

Technical Field

[0001] This utility model relates to the field of waste gas absorption technology, specifically a waste gas absorption device for a liquid chlorine storage tank. Background Technology

[0002] During the use of liquid chlorine storage tanks in the factory, there may be chlorine gas leaks at the inlet and outlet pipe connections and welds. Once a chlorine gas leak occurs, an exhaust gas absorption device must be used to treat the leaked chlorine gas in a timely manner to reduce safety risks.

[0003] A Chinese patent with authorization announcement number CN218459098U discloses a multi-stage absorption device for chlorine-containing waste gas, including a first treatment box and a second treatment box fixedly installed on top of the first treatment box. A filter screen is fixedly installed on the top of the second treatment box. Both the first and second treatment boxes have internal jetting components. One set of jetting components is connected to a gas supply pipe; the two sets of jetting components are connected through an extraction mechanism. This utility model proposes a multi-stage absorption device for chlorine-containing waste gas, which improves the convenience and cleanliness of the gas.

[0004] However, the above-mentioned device still has some problems. In practical applications, it cannot detect chlorine leaks in time, thus failing to collect and treat the leaked chlorine in a timely manner, increasing safety hazards in the plant. Therefore, a liquid chlorine storage tank waste gas absorption device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a liquid chlorine storage tank waste gas absorption device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The liquid chlorine storage tank waste gas absorption device of this utility model includes a base plate, an outer cavity installed at the top edge of the base plate, four support columns installed at the bottom of the outer cavity, a liquid chlorine storage tank body installed at the top of the support columns, a cylinder installed at the top edge of the outer cavity, a perforated plate installed on the inner wall of the cylinder, a moistened starch-potassium iodide test paper installed on the top of the perforated plate, a camera installed through the top of the cylinder, a through hole opened inside the outer side of the cylinder, a sealing plug installed inside the through hole, a gas supply pipe connected to one side of the bottom of the outer cavity, a connecting cavity installed on the outer side of the middle end of the gas supply pipe, a negative pressure motor installed inside the connecting cavity, and three fan blades installed at the output end of the negative pressure motor, which realizes timely detection of chlorine leakage and automatic start of the negative pressure motor for gas suction treatment.

[0007] Preferably, an absorption tower is installed on the top side of the base plate, one end of the gas transmission pipe is connected to a connecting pipe, one end of the connecting pipe is installed through the bottom of the absorption tower, a number of air nozzles are equidistantly connected to the outer wall of the connecting pipe, and two packing layers are equidistantly assembled on the inner wall of the absorption tower to ensure that chlorine gas is evenly distributed in the absorption tower and improve the treatment efficiency.

[0008] Preferably, the top of the absorption tower is connected to an outlet pipe, the outlet pipe has a through groove inside, an activated carbon mesh plate is movably installed inside the through groove, a side lug is installed on the outside of the outlet pipe, and a limit pin is movably installed through the activated carbon mesh plate inside the side lug, so as to further purify the gas and ensure that the emission meets the standards.

[0009] Preferably, a storage tank is installed at the other end of the top side of the base plate, a reflux pipe is connected to the bottom side of the absorption tower, one end of the reflux pipe is connected to the storage tank, a circulation pump is installed on the outer wall of the reflux pipe, and a pH sensor is installed through the top side of the storage tank. The pH sensor is used to detect the concentration of the alkali solution, monitor the concentration of the alkali solution in real time, ensure that the concentration of the alkali solution meets the treatment requirements, and enable the recycling of the alkali solution.

[0010] Preferably, the inside of the storage tank is connected to a conveying pipe, and the middle and top ends of the conveying pipe are located on the top side of the packing layer and are connected to straight pipes through the absorption tower. Several diversion pipes are installed on the outside of the straight pipes, and spray holes are opened inside the diversion pipes. A pump is installed on the outer wall of the conveying pipe to achieve uniform spraying of alkaline solution and improve the chlorine treatment effect.

[0011] Preferably, a control panel is installed on one side of the liquid storage tank. The control panel is electrically connected to the camera, the negative pressure motor, and the pH sensor. It is used for signal transmission to the camera and the pH sensor, as well as operation control of the negative pressure motor, to realize the automated operation and monitoring of the device and improve the efficiency of waste gas absorption.

[0012] The advantages of this utility model are:

[0013] 1. When chlorine gas leaks from the liquid chlorine storage tank, the leaked chlorine gas diffuses into the outer cavity and passes through the perforated plate to come into contact with moistened starch-potassium iodide test paper. Due to the oxidizing properties of chlorine gas, the test paper turns blue, indicating a chlorine leak. The camera monitors the status of the test paper in real time. Once the test paper turns blue, the camera transmits a signal to the control panel, which then activates the negative pressure motor. This enables timely detection of chlorine leaks and automatic activation of the negative pressure motor for suction treatment.

[0014] 2. In this invention, the alkaline solution that reacts with chlorine in the absorption tower is returned to the storage tank through the return pipe by the circulation pump, realizing the recycling of the alkaline solution. The pH sensor monitors the concentration of the alkaline solution in real time. When the alkaline concentration is lower than the set value, that is, the mass fraction of alkaline replacement should not be lower than 5%, the system prompts the operation of replacing the alkaline solution. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the waste gas absorption device;

[0018] Figure 3 This is a schematic diagram of the exhaust gas leak monitoring component.

[0019] Figure 4 This is a schematic diagram of the waste gas treatment component structure;

[0020] Figure 5 This is a schematic diagram of the spray assembly and the alkali circulation assembly.

[0021] In the diagram: 1. Base plate; 2. Outer cavity; 3. Support column; 4. Liquid chlorine storage tank body; 5. Cylinder; 6. Orifice plate; 7. Moistened starch-potassium iodide test paper; 8. Camera; 9. Through hole; 10. Sealing plug; 11. Gas delivery pipe; 12. Connecting cavity; 13. Negative pressure motor; 14. Fan blade; 15. Absorption tower; 16. Connecting pipe; 17. Air nozzle; 18. Packing layer; 19. Gas outlet pipe; 20. Activated carbon mesh plate; 21. Side lug; 22. Limit pin; 23. Liquid storage tank; 24. Return pipe; 25. Circulation pump; 26. pH sensor; 27. Delivery pipe; 28. Straight pipe; 29. ​​Diverter pipe; 30. Spray hole; 31. Pump; 32. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-3 As shown, a liquid chlorine storage tank exhaust gas absorption device includes a base plate 1, an outer cavity 2 installed at the top edge of the base plate 1, four support columns 3 installed at the bottom of the outer cavity 2, a liquid chlorine storage tank body 4 installed at the top of the support columns 3, a cylinder 5 installed at the top edge of the outer cavity 2, a perforated plate 6 installed on the inner wall of the cylinder 5, a moistened starch-potassium iodide test paper 7 installed on the top of the perforated plate 6, a camera 8 installed through the top of the cylinder 5, a through hole 9 opened inside the outer side of the cylinder 5, a sealing plug 10 installed inside the through hole 9, a gas supply pipe 11 connected to one side of the bottom end of the outer cavity 2, a connecting cavity 12 installed on the outer side of the middle end of the gas supply pipe 11, a negative pressure motor 13 installed inside the connecting cavity 12, and three fan blades 14 installed at the output end of the negative pressure motor 13.

[0024] An absorption tower 15 is installed on the top side of the base plate 1. One end of the gas transmission pipe 11 is connected to a connecting pipe 16. One end of the connecting pipe 16 is installed through the bottom of the absorption tower 15. Several jet nozzles 17 are equidistantly connected to the outer wall of the connecting pipe 16. Two packing layers 18 are equidistantly assembled on the inner wall of the absorption tower 15. A control panel 32 is installed on one side of the liquid storage tank 23. During operation, in practical applications, chlorine leaks cannot be detected in time, thus preventing timely collection and treatment of leaked chlorine, increasing safety hazards in the plant. When chlorine leaks from the liquid chlorine storage tank 4, the leaked chlorine diffuses into the outer cavity 2. The leaked chlorine passes through the perforated plate 6 and comes into contact with the moist starch-potassium iodide test paper 7. Due to the oxidizing properties of chlorine, the test paper turns blue, indicating a chlorine leak. The camera 8 monitors the moist starch-potassium iodide test paper in real time. The state of the powder-potassium iodide test paper 7: Once the test paper turns blue, the camera 8 transmits a signal to the control panel 32. After receiving the signal, the control panel 32 immediately issues a start command to the negative pressure motor 13, realizing timely detection of chlorine leakage and automatic start of the negative pressure motor 13 for gas suction. After the negative pressure motor 13 starts, it drives the three fan blades 14 to rotate, generating negative pressure in the connecting chamber 12. Under the action of negative pressure, the chlorine-containing gas in the outer chamber 2 is sucked in through the gas delivery pipe 11. After the gas in the gas delivery pipe 11 enters the connecting pipe 16, it is evenly sprayed out from several nozzles 17 on the connecting pipe 16, enters the absorption tower 15, and flows upward, passing through two packing layers 18 in sequence to increase the contact area between chlorine and alkaline solution and improve the treatment effect. The specific model of the camera 8 is DS-2CD2T46WD-I3.

[0025] Please see Figure 1 , 2As shown in Figures 4 and 5, the top of the absorption tower 15 is connected to an outlet pipe 19. The outlet pipe 19 has a through groove inside, and an activated carbon mesh plate 20 is movably installed inside the through groove. A side ear 21 is installed on the outside of the outlet pipe 19, and a limit pin 22 is movably installed inside the side ear 21 through the activated carbon mesh plate 20.

[0026] A liquid storage tank 23 is installed at the other end of the top side of the base plate 1. A reflux pipe 24 is connected to the bottom side of the absorption tower 15. One end of the reflux pipe 24 is connected to the liquid storage tank 23. A circulation pump 25 is installed on the outer wall of the reflux pipe 24. A pH sensor 26 is installed through the top side of the liquid storage tank 23. The pH sensor 26 is used to detect the concentration of the alkali solution.

[0027] The liquid storage tank 23 is internally connected to a conveying pipe 27. The middle and top ends of the conveying pipe 27, located on the top side of the packing layer 18, both penetrate the absorption tower 15 and connect to straight pipes 28. Several branch pipes 29 are installed on the outer side of each straight pipe 28. Spray holes 30 are opened inside each branch pipe 29. A pump 31 is installed on the outer wall of the conveying pipe 27. During operation, in the plant, chlorine gas may leak from the inlet and outlet pipe connections and welds of the liquid chlorine storage tank. If a chlorine gas leak occurs, a waste gas absorption device must be used to promptly treat the leaked chlorine gas to reduce safety risks. The alkaline solution in the liquid storage tank 23, which is a sodium hydroxide solution, is pumped by the pump 31 and enters the straight pipe 28 inside the absorption tower 15 through the conveying pipe 27, then flows out of the straight pipe 28... The gas is diverted into several diversion pipes 29, and finally sprayed out from the spray holes 30 on the diversion pipes 29 to absorb the chlorine gas with alkaline solution. After alkaline absorption, the gas continues to flow upward and is discharged through the gas outlet pipe 19. The activated carbon mesh plate 20 further purifies the gas to ensure that the emission meets the standards. If the activated carbon mesh plate 20 needs to be replaced, the limit pin 22 on the side ear 21 can be pulled out for replacement. The alkaline solution that reacts with the chlorine gas in the absorption tower 15 flows back to the storage tank 23 through the return pipe 24 under the action of the circulation pump 25, realizing the recycling of the alkaline solution. The pH sensor 26 monitors the alkaline solution concentration in real time. When the alkaline concentration is lower than the set value, that is, the mass fraction of alkaline replacement should not be lower than 5%, it prompts to replace the alkaline solution. The pH sensor 26 is model InPro4260i.

[0028] Working principle: When chlorine leaks from the liquid chlorine storage tank 4, the leaked chlorine diffuses into the outer cavity 2. The leaked chlorine passes through the orifice plate 6 and comes into contact with the moistened starch-potassium iodide test paper 7. Due to the oxidizing property of chlorine, the test paper turns blue, indicating a chlorine leak. The camera 8 monitors the status of the moistened starch-potassium iodide test paper 7 in real time. Once the test paper turns blue, the camera 8 transmits a signal to the control panel 32. Upon receiving the signal, the control panel 32 immediately sends a start command to the negative pressure motor 13, achieving timely detection and control. In the event of a chlorine leak, the negative pressure motor 13 is automatically activated to draw in the gas. After the negative pressure motor 13 is activated, it drives the three fan blades 14 to rotate, generating a negative pressure in the connecting chamber 12. Under the action of the negative pressure, the chlorine-containing gas in the outer chamber 2 is drawn in through the gas delivery pipe 11. The gas in the gas delivery pipe 11 enters the connecting pipe 16 and is evenly sprayed out from several nozzles 17 on the connecting pipe 16. It enters the absorption tower 15 and flows upward, passing through the packing layer 18 in sequence to increase the contact area between the chlorine and the alkaline solution and improve the treatment effect.

[0029] Under the action of pump 31, the alkaline solution in storage tank 23 (sodium hydroxide solution) enters the straight pipe 28 in absorption tower 15 through delivery pipe 27, and then is divided into several branch pipes 29. Finally, it is sprayed out from the spray holes 30 on the branch pipes 29 to absorb chlorine gas with alkaline solution spray. After alkaline absorption treatment, the gas continues to flow upward and is discharged through gas outlet pipe 19. Activated carbon mesh plate 20 further purifies the gas to ensure that the emission meets the standards. If the activated carbon mesh plate 20 needs to be replaced, the limit pin 22 on the side lug 21 can be pulled out for replacement. The alkaline solution that reacts with chlorine gas in absorption tower 15 flows back to storage tank 23 through return pipe 24 under the action of circulation pump 25, realizing the recycling of alkaline solution. The pH sensor 26 monitors the alkaline solution concentration in real time. When the alkaline concentration is lower than the set value, that is, the mass fraction of alkaline replacement should not be lower than 5%, it prompts to replace the alkaline solution.

[0030] In the description of this specification, references to terms such as "in an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A liquid chlorine storage tank waste gas absorption device, characterized in that: Includes a base plate (1), an outer cavity (2) installed at the top edge of the base plate (1), four support columns (3) installed at the bottom of the outer cavity (2), a liquid chlorine storage tank body (4) installed at the top of the support columns (3), a cylinder (5) installed at the top edge of the outer cavity (2), a perforated plate (6) installed on the inner wall of the cylinder (5), a moistened starch-potassium iodide test paper (7) installed on the top of the perforated plate (6), and the top of the cylinder (5) A camera (8) is installed through the side. A through hole (9) is opened inside the outer side of the cylinder (5). A sealing plug (10) is installed inside the through hole (9). An air supply pipe (11) is connected to one side of the bottom end of the outer cavity (2). A connecting cavity (12) is installed on the outer side of the middle end of the air supply pipe (11). A negative pressure motor (13) is installed inside the connecting cavity (12). Three fan blades (14) are installed at the output end of the negative pressure motor (13).

2. The liquid chlorine storage tank waste gas absorption device according to claim 1, characterized in that: An absorption tower (15) is installed on the top side of the base plate (1). One end of the gas transmission pipe (11) is connected to a connecting pipe (16). One end of the connecting pipe (16) is installed through the bottom of the absorption tower (15). Several jet nozzles (17) are equidistantly connected to the outer wall of the connecting pipe (16). Two packing layers (18) are equidistantly assembled on the inner wall of the absorption tower (15).

3. The liquid chlorine storage tank waste gas absorption device according to claim 2, characterized in that: The top of the absorption tower (15) is connected to an outlet pipe (19). The outlet pipe (19) has a through groove inside. An activated carbon mesh plate (20) is movably installed inside the through groove. A side ear (21) is installed on the outside of the outlet pipe (19). A limit pin (22) is movably installed inside the side ear (21) through the activated carbon mesh plate (20).

4. The liquid chlorine storage tank waste gas absorption device according to claim 3, characterized in that: A liquid storage tank (23) is installed at the other end of the top side of the base plate (1). A reflux pipe (24) is connected to the bottom side of the absorption tower (15). One end of the reflux pipe (24) is connected to the liquid storage tank (23). A circulation pump (25) is installed on the outer wall of the reflux pipe (24). A pH sensor (26) is installed through the top side of the liquid storage tank (23). The pH sensor (26) is used to detect the concentration of the alkali solution.

5. The liquid chlorine storage tank waste gas absorption device according to claim 4, characterized in that: The liquid storage tank (23) is internally connected to a conveying pipe (27). The middle and top ends of the conveying pipe (27) are located on the top side of the packing layer (18) and are connected to a straight pipe (28) through the absorption tower (15). Several diversion pipes (29) are installed on the outside of the straight pipes (28). Spray holes (30) are opened inside the diversion pipes (29). A pump (31) is installed on the outer wall of the conveying pipe (27).

6. The liquid chlorine storage tank waste gas absorption device according to claim 5, characterized in that: A control panel (32) is installed on one side of the liquid storage tank (23). The control panel (32) is electrically connected to the camera (8), the negative pressure motor (13), and the pH sensor (26). It is used for signal transmission of the camera (8) and the pH sensor (26) and operation control of the negative pressure motor (13).

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