VOC acid tail gas treatment device

Abstract

The utility model discloses a VOC (volatile organic compound) acidic tail gas treatment device, which relates to the technical field of tail gas treatment and comprises a box body, observation glass is fixedly connected to the front side of the box body, a water inlet is fixedly connected to the upper part of the left side of the box body, and a water outlet is fixedly connected to the lower part of the left side of the box body. The left part of the top of the box body is fixedly connected with an exhaust mechanism, the right part of the top of the box body is fixedly connected with a spraying mechanism, the exhaust mechanism comprises an air pump, and the bottom of the air pump is fixedly connected with the left part of the top of the box body. According to the VOC acid tail gas treatment device disclosed by the utility model, the VOC acid tail gas is in contact with an alkaline solution through the exhaust hole through the arranged gas inlet pipe, so that acidic substances in the VOC acid tail gas are removed, and the arranged PH meter can be used for detecting the gas, so that the acidity degree of the gas is judged, and the possibility of polluting the environment is effectively prevented; and a better treatment effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to a VOC acidic exhaust gas treatment device. Background Technology

[0002] VOCs generally refer to volatile organic compounds. According to the World Health Organization, they are compounds with a boiling point between 50°C and 250°C, a saturated vapor pressure exceeding 133.32 kPa at room temperature, and an organic compound that exists in the air as vapor at room temperature. However, in an environmental context, they are defined as a more reactive type of volatile organic compound, that is, the type of volatile organic compound that can cause harm. VOCs are usually found in acidic exhaust gases and need to be treated to ensure that emissions do not pollute the environment.

[0003] For example, Chinese Patent CN220405236U discloses a VOC acidic exhaust gas treatment device, including a water storage tank. The water storage tank has an internal water storage trough. A measuring pipe is fixedly connected to the left side of the water storage tank, and one side of the measuring pipe is connected to the water storage trough. A second pipe is fixedly connected to the front end of the water storage tank. A filter box is fixedly connected to the top of the water storage tank. A first pipe is connected through the rear end of the filter box. A filter trough is opened inside the filter box. A third pipe is fixedly connected to the end of the first pipe near the filter trough. By connecting the internally installed water spray pipes and using a single inlet pipe for water irrigation, the device achieves the function of controlling the water output by connecting three outlet pipes to one inlet pipe. This solves the problem of difficulty in controlling the liquid level inside the water storage tank caused by using multiple sets of inlet pipes for water addition and filtration, and reduces the difficulty in controlling the liquid level caused by using multiple sets of inlet pipes for spraying water.

[0004] The existing technology has the following problems:

[0005] Existing exhaust gas treatment devices typically treat VOC acidic exhaust gases by spraying alkaline solutions. However, spraying cannot completely cover the exhaust gases, resulting in some exhaust gases remaining untreated. Furthermore, existing exhaust gas treatment devices cannot detect that the treated exhaust gases are directly emitted, making it impossible to determine whether the emitted exhaust gases meet emission standards, thus causing some pollution. Utility Model Content

[0006] This invention provides a VOC acidic exhaust gas treatment device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A VOC acidic exhaust gas treatment device includes a housing, an observation glass fixedly connected to the front side of the housing, a water inlet fixedly connected to the upper left side of the housing, a water outlet fixedly connected to the lower left side of the housing, an exhaust mechanism fixedly connected to the left side of the top of the housing, and a spray mechanism fixedly connected to the right side of the top of the housing.

[0009] Preferably, the exhaust mechanism includes an air pump, the bottom of which is fixedly connected to the left side of the top of the housing, the input end of which is fixedly connected to an air outlet pipe, the upper part of which is fixedly connected to a valve, the output end of which is fixedly connected to a return pipe, the bottom of which is fixedly connected to an air inlet pipe, the right end of which passes through the left side of the housing and is fixedly connected to an air storage pipe, and a pH meter is fixedly connected to the left side of the top of the inner wall of the housing.

[0010] Preferably, the lower part of the vent pipe passes through the top of the housing, and the lower part of the vent pipe is tapered.

[0011] Preferably, the bottom of the gas storage pipe overlaps with the bottom of the inner wall of the box, and several exhaust holes are provided on both the front and rear sides of the gas storage pipe.

[0012] Preferably, the spraying mechanism includes a water pump and three filter plates. The bottom of the water pump is fixedly connected to the right side of the top of the tank. The output end of the water pump is fixedly connected to a water outlet pipe. The bottom of the water outlet pipe passes through the top of the tank and is fixedly connected to a water storage box. The bottom of the water storage box is fixedly connected to several spray heads in a rectangular array. The input end of the water pump is fixedly connected to a water inlet pipe. The lower part of the water inlet pipe passes through the right side of the tank and is fixedly connected to a filter screen. Six support plates are fixedly connected to the left and right sides of the lower part of the inner wall of the tank. The top of every two support plates is fixedly connected to the bottom of each filter plate.

[0013] Preferably, each of the three filter plates has a flow guide block fixedly connected to its top, and the upper surface of the flow guide block is inclined towards the middle.

[0014] Preferably, the length of the filter plate is greater than the length of the air storage pipe, and the distance between the filter plate and the bottom of the inner wall of the box is greater than the surface diameter of the air storage pipe.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] This invention provides a VOC acidic exhaust gas treatment device. Through the inlet pipe, the VOC acidic exhaust gas comes into contact with an alkaline solution through the exhaust port, thereby removing acidic substances from the VOC acidic exhaust gas. The included pH meter will detect the gas to determine the degree of acidity, effectively preventing the possibility of environmental pollution and achieving better treatment results.

[0017] This utility model provides a VOC acidic exhaust gas treatment device. The device has three filter plates to ensure a good treatment effect on the exhaust gas. By starting the water pump, the alkaline solution is sprayed downwards. The sprayed alkaline solution comes into contact with the exhaust gas and performs a second acid removal, achieving a better treatment effect. At the same time, the guide block allows the sprayed solution to flow back into the tank, achieving the recycling of alkaline liquid. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the exhaust mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the spray mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the spraying mechanism of this utility model.

[0023] In the diagram: 1. Box body; 2. Observation glass; 3. Water inlet; 4. Exhaust mechanism; 41. Air inlet pipe; 42. Air storage pipe; 43. Exhaust vent; 44. Air return pipe; 45. Air pump; 46. Air outlet pipe; 47. Valve; 48. pH meter; 5. Water outlet; 6. Spray mechanism; 61. Water pump; 62. Water outlet pipe; 63. Water inlet pipe; 64. Water storage box; 65. Spray head; 66. Filter plate; 67. Filter screen; 68. Support plate; 69. Flow guide block. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 As shown, a VOC acidic exhaust gas treatment device includes a housing 1, an observation glass 2 fixedly connected to the front side of the housing 1, a water inlet 3 fixedly connected to the upper part of the left side of the housing 1, a water outlet 5 fixedly connected to the lower part of the left side of the housing 1, an exhaust mechanism 4 fixedly connected to the left part of the top of the housing 1, and a spray mechanism 6 fixedly connected to the right part of the top of the housing 1.

[0026] It should be noted that an alkaline solution is injected into the interior of the tank 1 through the inlet 3, and the alkaline solution can be discharged through the outlet 5. The observation glass 2 allows real-time observation of the processing status inside the tank 1. The spray mechanism 6 can treat the VOC acidic exhaust gas, and the exhaust mechanism 4 can discharge and detect the VOC acidic exhaust gas to ensure that the discharged gas meets the emission standards.

[0027] like Figure 2 , Figure 3 As shown, the exhaust mechanism 4 includes an air pump 45. The bottom of the air pump 45 is fixedly connected to the left side of the top of the housing 1. An air outlet pipe 46 is fixedly connected to the input end of the air pump 45. A valve 47 is fixedly connected to the upper part of the air outlet pipe 46. A return pipe 44 is fixedly connected to the output end of the air pump 45. An air inlet pipe 41 is fixedly connected to the bottom of the return pipe 44. An air storage pipe 42 is fixedly connected to the right end of the air inlet pipe 41 through the left side of the housing 1. A pH meter 48 is fixedly connected to the left side of the top of the inner wall of the housing 1.

[0028] It should be noted that VOC acidic exhaust gas is discharged into the intake pipe 41, allowing it to enter the storage pipe 42. Multiple exhaust holes 43 are provided on the storage pipe 42. The VOC acidic exhaust gas will come into contact with an alkaline solution through the exhaust holes 43, undergoing a certain reaction to remove acidic substances from the VOC acidic exhaust gas. A pH meter 48 is installed at the top of the housing 1 to detect the gas and determine its acidity. If the acidity meets the emission standards, valve 47 is opened, and the gas will be discharged through the exhaust pipe 46. If the acidity does not meet the emission standards, the air pump 45 is activated, which will drive the gas back into the intake pipe 41 through the return pipe 44 for further treatment, effectively preventing potential environmental pollution and achieving better treatment results.

[0029] like Figure 2 , Figure 3 As shown, the lower part of the vent pipe 46 passes through the top of the housing 1, and the lower part of the vent pipe 46 is in the shape of a conical sleeve.

[0030] It should be noted that the exhaust pipe 46 receives the treated exhaust gas, and the conical sleeve structure allows the exhaust gas to enter the exhaust pipe 46 to the maximum extent.

[0031] like Figure 2 , Figure 3 As shown, the bottom of the gas storage pipe 42 overlaps with the bottom of the inner wall of the box 1, and several exhaust holes 43 are provided on the front and rear sides of the gas storage pipe 42.

[0032] It should be noted that the VOC acidic exhaust gas comes into contact with the alkaline solution through multiple exhaust holes 43, and a certain reaction occurs.

[0033] like Figure 2 , Figure 4 , Figure 5 As shown, the spraying mechanism 6 includes a water pump 61 and three filter plates 66. The bottom of the water pump 61 is fixedly connected to the right side of the top of the housing 1. The output end of the water pump 61 is fixedly connected to a water outlet pipe 62. The bottom of the water outlet pipe 62 passes through the top of the housing 1 and is fixedly connected to a water storage box 64. The bottom of the water storage box 64 is fixedly connected to several spray heads 65 in a rectangular array. The input end of the water pump 61 is fixedly connected to a water inlet pipe 63. The lower part of the water inlet pipe 63 passes through the right side of the housing 1 and is fixedly connected to a filter screen 67. Six support plates 68 are fixedly connected to the left and right sides of the lower part of the inner wall of the housing 1. The top of every two support plates 68 is fixedly connected to the bottom of each filter plate 66.

[0034] It should be noted that the exhaust gas flows upward and passes through three filter plates 66 in sequence. The triple filtration ensures a good treatment effect on the exhaust gas. At this time, the water pump 61 is started, which will drive the alkaline solution at the bottom of the tank 1 into the water inlet pipe 63. The filter screen 67 set on the water inlet pipe 63 can prevent some of the precipitates generated after the acid-base reaction from entering. Then, the alkaline liquid is discharged into the water storage box 64 by the water pump 61. Multiple spray heads 65 are set at the bottom of the water storage box 64, so that the alkaline solution will be sprayed downward. The sprayed alkaline solution comes into contact with the exhaust gas and performs a second acid removal, achieving a better treatment effect. The filter plate 66 is equipped with a guide block 69. The sprayed solution will flow along the guide block 69 to the middle, and then flow to the bottom of the tank 1, so as to achieve the recycling of alkaline liquid.

[0035] like Figure 2 , Figure 5 As shown, each of the three filter plates 66 has a flow guide block 69 fixedly connected to its top, and the upper surface of the flow guide block 69 is inclined towards the middle.

[0036] It should be noted that a guide block 69 is provided on the filter plate 66, and the sprayed solution will flow along the guide block 69 to the middle, and then flow to the bottom of the box 1.

[0037] like Figure 2 , Figure 3 , Figure 5 As shown, the length of the filter plate 66 is greater than the length of the air storage pipe 42, and the distance between the filter plate 66 and the bottom of the inner wall of the box 1 is greater than the surface diameter of the air storage pipe 42.

[0038] It should be noted that the alkaline solution completely covers the gas storage pipe 42 but does not contact the filter plate 66, so that the gas can come into complete contact with the alkaline liquid.

[0039] The working principle of this invention is as follows: An alkaline solution is injected into the tank 1 through the inlet 3, ensuring that the alkaline solution completely covers the gas storage pipe 42 but does not contact the filter plate 66. Then, VOC acidic exhaust gas is discharged into the inlet pipe 41, allowing it to enter the gas storage pipe 42. Multiple exhaust holes 43 are provided on the gas storage pipe 42. The VOC acidic exhaust gas will come into contact with the alkaline solution through the exhaust holes 43, undergoing a reaction to remove acidic substances from the VOC acidic exhaust gas. The exhaust gas then flows upwards, passing through three filter plates 66 in sequence. This triple filtration ensures a good treatment effect on the exhaust gas. At this point, the water pump 61 is activated, which will drive the alkaline solution at the bottom of the tank 1 into the inlet pipe 63. The filter screen 67 on the inlet pipe 63 prevents some of the precipitate generated after the acid-base reaction from entering, thus allowing the alkaline liquid to be discharged into the water storage box 64 by the water pump 61. In the process, multiple spray nozzles 65 are installed at the bottom of the water storage box 64, allowing the alkaline solution to spray downwards. The sprayed alkaline solution comes into contact with the exhaust gas, performing a second acid removal process for better treatment. A guide block 69 is installed on the filter plate 66, allowing the sprayed solution to flow towards the center along the guide block 69 and then to the bottom of the tank 1, achieving the recycling of the alkaline liquid. The treated gas rises to the top of the tank 1, where a pH meter 48 is installed to detect the gas and determine its acidity. If the acidity meets the emission standards, the valve 47 is opened, and the gas will be discharged through the outlet pipe 46. If the acidity does not meet the emission standards, the air pump 45 is activated, which will drive the gas back to the inlet pipe 41 through the return pipe 44 for further treatment, effectively preventing potential environmental pollution and achieving better treatment results.

[0040] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A VOC acidic exhaust gas treatment device, comprising a housing (1), characterized in that: The front side of the box (1) is fixedly connected to an observation glass (2), the upper left side of the box (1) is fixedly connected to a water inlet (3), the lower left side of the box (1) is fixedly connected to a water outlet (5), the left side of the top of the box (1) is fixedly connected to an exhaust mechanism (4), and the right side of the top of the box (1) is fixedly connected to a spray mechanism (6).

2. The VOC acidic tail gas treatment device according to claim 1, characterized in that: The exhaust mechanism (4) includes an air pump (45), the bottom of which is fixedly connected to the left side of the top of the box (1), the input end of which is fixedly connected to an air outlet pipe (46), the upper part of which is fixedly connected to a valve (47), the output end of which is fixedly connected to a return pipe (44), the bottom of which is fixedly connected to an air inlet pipe (41), the right end of which passes through the left side of the box (1) and is fixedly connected to an air storage pipe (42), and a pH meter (48) is fixedly connected to the left side of the inner wall of the box (1).

3. The VOC acidic tail gas treatment device according to claim 2, characterized in that: The lower part of the vent pipe (46) passes through the top of the box (1), and the lower part of the vent pipe (46) is in the shape of a conical sleeve.

4. The VOC acidic tail gas treatment device according to claim 2, characterized in that: The bottom of the gas storage pipe (42) overlaps with the bottom of the inner wall of the box (1), and several exhaust holes (43) are provided on the front and rear sides of the gas storage pipe (42).

5. The VOC acidic tail gas treatment device according to claim 2, characterized in that: The spraying mechanism (6) includes a water pump (61) and three filter plates (66). The bottom of the water pump (61) is fixedly connected to the right side of the top of the box (1). The output end of the water pump (61) is fixedly connected to a water outlet pipe (62). The bottom of the water outlet pipe (62) passes through the top of the box (1) and is fixedly connected to a water storage box (64). The bottom of the water storage box (64) is fixedly connected to several spray heads (65) in a rectangular array. The input end of the water pump (61) is fixedly connected to a water inlet pipe (63). The lower part of the water inlet pipe (63) passes through the right side of the box (1) and is fixedly connected to a filter screen (67). The lower left and right sides of the inner wall of the box (1) are fixedly connected to six support plates (68). The top of every two support plates (68) is fixedly connected to the bottom of each filter plate (66).

6. The VOC acidic tail gas treatment device according to claim 5, characterized in that: Each of the three filter plates (66) has a flow guide block (69) fixedly connected to its top, and the upper surface of the flow guide block (69) is inclined toward the middle position.

7. The VOC acidic tail gas treatment device according to claim 5, characterized in that: The length of the filter plate (66) is greater than the length of the gas storage pipe (42), and the distance between the filter plate (66) and the bottom of the inner wall of the box (1) is greater than the surface diameter of the gas storage pipe (42).

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