An acidic VOCs tail gas dry treatment device

Abstract

The utility model relates to acid VOCs tail gas treatment technical field especially relates to a kind of acid VOCs tail gas dry method processing device, the acid VOCs tail gas dry method processing device includes: base, base top is fixedly connected with washing tank, washing tank top is fixedly connected with drying tank, drying tank top is fixedly connected with adsorption tank, adsorption tank top is fixedly connected with gas outlet pipe, and washing tank inside rotationally connected with communicating pipe, and communicating pipe outer wall equidistant fixedly connected with spray pipe, drying tank inside is fixedly connected with first drying seat, drying tank inside is fixedly connected with second drying seat, adsorption tank inside is fixedly connected with partition, and partition divides adsorption tank into first adsorption area and second adsorption area, drying tank inside is installed with conversion component, the acid VOCs tail gas dry method processing device provided by the utility model has the advantages of improving washing efficiency and not stopping machine switching and regeneration.

Description

Technical Field

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

[0002] In industrial production and chemical manufacturing, the emission of acidic volatile organic compound (VOC) exhaust gases is one of the main sources of environmental pollution. These exhaust gases not only have an irritating odor, but also damage the atmospheric environment, such as participating in the formation of photochemical smog and exacerbating ozone pollution. They also pose potential hazards to the human respiratory and nervous systems. Therefore, effective treatment is crucial. Currently, there are various methods for treating acidic VOC exhaust gases, among which dry treatment is widely used due to its advantages of not requiring large amounts of water resources and having low pressure on subsequent wastewater treatment.

[0003] However, existing dry treatment devices have many problems in actual operation: In the washing stage, traditional spray structures are mostly fixed and the spray range is limited, resulting in insufficient contact between the washing liquid and the exhaust gas, making it difficult to efficiently remove volatile organic compounds in the exhaust gas and affecting the subsequent treatment effect; In the drying stage, commonly used drying components are mostly single-set or fixed working mode. When the adsorption effect of the adsorbent in the drying component decreases, it is necessary to stop the machine for replacement or regeneration, which seriously affects the treatment efficiency.

[0004] Therefore, it is necessary to provide a new dry treatment device for acidic VOCs tail gas to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a dry treatment device for acidic VOCs tail gas.

[0006] The dry treatment device for acidic VOCs tail gas provided by this utility model includes: a base, a washing tank fixedly connected to the top of the base, a drying tank fixedly connected to the top of the washing tank, an adsorption tank fixedly connected to the top of the drying tank, an outlet pipe fixedly connected to the top of the adsorption tank, a connecting pipe rotatably connected inside the washing tank, spray pipes fixedly connected at equal intervals to the outer wall of the connecting pipe, a first drying seat fixedly connected inside the drying tank, a second drying seat fixedly connected inside the drying tank, a partition plate fixedly connected inside the adsorption tank, the partition plate dividing the adsorption tank into a first adsorption zone and a second adsorption zone, and a conversion component installed inside the drying tank.

[0007] Preferably, the conversion assembly includes: a second drive motor, a conversion rod, a rotating gear, a conversion plate, a rack, a baffle plate, and baffle bars. The second drive motor is fixedly connected inside the drying tank, the output end of the second drive motor is fixedly connected to the conversion rod, the rotating gear is fixedly connected to the outer wall of the conversion rod, the conversion plate is slidably connected inside the drying tank, the end of the conversion plate near the rotating gear is fixedly connected to the rack, the rack meshes with the rotating gear, the bottom of the conversion rod is fixedly connected to the baffle plate, and the bottom of the conversion rod is symmetrically fixedly connected to the baffle bars.

[0008] Preferably, a vent plate is fixedly connected to the top of the washing tank, a first drive motor is fixedly connected to the bottom of the vent plate, and the output end of the first drive motor is fixedly connected to the connecting pipe.

[0009] Preferably, the multiple sets of spray pipes are arranged in an alternating manner.

[0010] Preferably, a dryer is symmetrically and fixedly connected inside the drying tank, and ventilation holes are symmetrically opened inside the conversion plate. A drying pipe is fixedly connected to one end of the first drying seat and the second drying seat, and the output end of the dryer is connected to the drying pipe through the ventilation hole.

[0011] Preferably, the barrier plate has a semi-circular design.

[0012] Preferably, flow channels are provided at equal intervals on the top of the barrier plate.

[0013] Preferably, a flow pipe is symmetrically fixedly connected to the side of the partition plate near the second partition zone, and a resin column is symmetrically fixedly connected to the adsorption tank located in the second partition zone. The first partition zone is connected to the resin column through the flow pipe.

[0014] Compared with related technologies, the dry treatment device for acidic VOCs tail gas provided by this utility model has the following advantages:

[0015] Improve washing efficiency:

[0016] This device adopts a structure in which the first drive motor drives the connecting pipe and the spray pipes arranged in an alternating pattern on the outer wall to rotate, which changes the limitations of the traditional fixed spray structure. The rotating spray pipes can expand the spray range, so that the non-volatile oil and acidic VOCs tail gas can come into full contact, improve the removal rate of volatile organic compounds, lay a good foundation for subsequent treatment, and effectively solve the problem of insufficient washing.

[0017] Non-stop switching and regeneration:

[0018] The drying tank is equipped with a first drying seat and a second drying seat, along with a switching component. This overcomes the drawbacks of traditional drying components that are either single-set or have a fixed working mode. When the adsorbent effect of the first drying seat decreases, the second drive motor drives the switching rod and rotating gears to rotate the baffle plate and switch the exhaust gas to the second drying seat. This allows for continuous replacement without stopping the machine, ensuring continuous processing and avoiding efficiency losses caused by downtime. At the same time, the switching component can also adjust the connection between the vent and the drying pipe, and start the dryer to dry and regenerate the desiccant in the idle drying seat, extending the adsorbent's service life. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the dry treatment device for acidic VOCs tail gas provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows the internal structure of the washing tank.

[0021] Figure 3 for Figure 1 The diagram shows the internal structure of the drying tank.

[0022] Figure 4 for Figure 3 The diagram shows the structure of the conversion component.

[0023] Figure 5 for Figure 1 The diagram shows the structure of the adsorption tank.

[0024] The following are the labels in the diagram: 1. Base; 2. Washing tank; 3. Drying tank; 4. Adsorption tank; 5. Air outlet pipe; 6. Connecting pipe; 7. Spray pipe; 8. First drying seat; 9. Second drying seat; 10. Divider plate; 11. First adsorption zone; 12. Second adsorption zone; 21. Second drive motor; 22. Conversion rod; 23. Rotating gear; 24. Conversion plate; 25. Rack; 26. Barrier plate; 27. Barrier strip; 31. Ventilation plate; 32. First drive motor; 51. Dryer; 52. Vent hole; 53. Drying pipe; 81. Flow pipe; 82. Resin column. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 5A dry treatment device for acidic VOCs tail gas includes: a base 1; a washing tank 2 fixedly connected to the top of the base 1; a drying tank 3 fixedly connected to the top of the washing tank 2; an adsorption tank 4 fixedly connected to the top of the drying tank 3; an outlet pipe 5 fixedly connected to the top of the adsorption tank 4; a connecting pipe 6 rotatably connected inside the washing tank 2; spray pipes 7 fixedly connected at equal intervals to the outer wall of the connecting pipe 6; a first drying seat 8 fixedly connected inside the drying tank 3; a second drying seat 9 fixedly connected inside the drying tank 3; and a partition plate 1 fixedly connected inside the adsorption tank 4. 0. The partition plate 10 divides the adsorption tank 4 into a first adsorption zone 11 and a second adsorption zone 12. A conversion component is installed inside the drying tank 3. A breathable plate 31 is fixedly connected to the top of the washing tank 2. A first drive motor 32 is fixedly connected to the bottom of the breathable plate 31. The output end of the first drive motor 32 is fixedly connected to the connecting pipe 6. Multiple sets of spray pipes 7 are staggered. A flow pipe 81 is symmetrically fixedly connected to the side of the partition plate 10 near the second partition zone. A resin column 82 is symmetrically fixedly connected to the adsorption tank 4 in the second partition zone. The first partition zone is connected to the resin column 82 through the flow pipe 81.

[0028] It should be noted that: the connecting pipe 6 is hollow, and the bottom of the connecting pipe 6 passes through the washing tank 2 and is connected to the oil inlet pipe that conveys non-volatile oil. The first drying seat 8 and the second drying seat 9 are both filled with desiccant, and the first adsorption zone 11 is filled with calcium oxide, which can adsorb inorganic acids in the exhaust gas.

[0029] Please see Figure 1 , Figure 3 and Figure 4 The conversion assembly includes: a second drive motor 21, a conversion rod 22, a rotating gear 23, a conversion plate 24, a rack 25, a baffle plate 26, and a baffle bar 27. The second drive motor 21 is fixedly connected inside the drying tank 3. The output end of the second drive motor 21 is fixedly connected to the conversion rod 22. The rotating gear 23 is fixedly connected to the outer wall of the conversion rod 22. The conversion plate 24 is slidably connected inside the drying tank 3. The end of the conversion plate 24 near the rotating gear 23 is fixedly connected to the rack 25, which meshes with the rotating gear 23. The bottom of the conversion rod 22 is fixedly connected to the baffle plate 26. The bottom of the conversion rod 22 is symmetrically fixedly connected to the baffle bar 27. The drying machine 51 is symmetrically fixedly connected inside the drying tank 3. The conversion plate 24 has symmetrically opened ventilation holes 52. The first drying seat 8 and the second drying seat 9 are fixedly connected to one end of the drying pipe 53. The output end of the dryer 51 is connected to the drying pipe 53 through the ventilation hole 52. The baffle plate 26 has a semi-circular design, and the top of the baffle plate 26 has equidistant flow channels.

[0030] It should be noted that the semi-circular design of the baffle plate 26 can only completely block one of the first drying seat 8 and the second drying seat 9. The baffle strip 27 can prevent the exhaust gas inside the first drying seat 8 and the second drying seat 9 from entering the space where the dryer 51 is stored, thus avoiding damage to the machine.

[0031] The working principle of the dry treatment device for acidic VOCs tail gas provided by this utility model is as follows:

[0032] Washing tank 2 treatment:

[0033] The exhaust gas first enters the scrubbing tank 2. Inside the scrubbing tank 2, the first drive motor 32 drives the connecting pipe 6 to rotate. The spray pipes 7, which are fixed at equal intervals and staggered on the outer wall of the connecting pipe 6, rotate together with it. The non-volatile oil sprayed from the spray pipes 7 can come into more comprehensive contact with the exhaust gas, and perform preliminary scrubbing treatment on the acidic VOCs exhaust gas to remove volatile organic compounds. The treated exhaust gas enters the drying tank 3 through the vent plate 31 at the top of the scrubbing tank 2.

[0034] Drying tank 3 processing:

[0035] In the drying tank 3, the exhaust gas needs to be dried. Only one of the first drying seat 8 and the second drying seat 9 can work normally. When the first drying seat 8 is working, the vent plate 31 at the bottom of the second drying seat 9 is partially blocked by the baffle plate 26, and the exhaust gas cannot enter the second drying seat 9. The exhaust gas humidity and dew point can be reduced by the action of the first drying seat 8.

[0036] Adsorption tank 4 treatment:

[0037] The dried exhaust gas enters the adsorption tank 4, which is divided into a first adsorption zone 11 and a second adsorption zone 12 by the partition plate 10. The exhaust gas first enters the first adsorption zone 11, where calcium oxide adsorbs inorganic acids in the exhaust gas. Then, it enters the resin column 82 through the flow pipe 81 symmetrically fixed on the side of the partition plate 10 near the second adsorption zone 12. Further adsorption treatment is completed in the resin column 82 to remove the remaining VOCs and other harmful substances. Then, it seeps out from the surface of the resin column 82 into the interior of the second adsorption zone 12. Finally, the purified gas is discharged through the exhaust pipe 5 at the top of the adsorption tank 4.

[0038] The conversion component works as follows:

[0039] After prolonged use, the adsorption effect of the adsorbent inside the first drying seat 8 decreases, making it difficult to effectively reduce the humidity of the exhaust gas. At this point, the second drive motor 21 starts, driving the baffle plate 26 to rotate via the conversion rod 22. After rotating 90 degrees counterclockwise, the baffle plate 26 blocks the exhaust gas from passing through the vent plate 31 into the first drying seat 8. The baffle plate 26 also no longer blocks the exhaust gas from entering the second drying seat 9, allowing the exhaust gas to instead enter the second drying seat 9, achieving replacement without stopping the machine. The rotation of the conversion rod 22 drives the rotating gear 23 to rotate, and the rotating gear 23 engages with the rack 25, making... The rack 25 drives the conversion plate 24 to slide inside the drying tank 3. The vent 52 near the first drying seat 8 will be on the same axis as the drying tube 53. At this time, the output end of the dryer 51 near the first drying seat 8 is connected to the drying tube 53 through the vent 52. The dryer 51 is started, and the hot air generated by the dryer 51 enters the drying tube 53 through the vent 52 inside the conversion plate 24. The hot air is dissipated into the first drying seat 8 through the drying tube 53 to dry the desiccant. The water vapor evaporated during drying will flow to the top of the baffle plate 26 and flow out to the outside through the flow channel.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dry treatment device for acidic VOCs tail gas, characterized in that, include: The base (1) is fixedly connected to the top of the base (1) and the washing tank (2) is fixedly connected to the top of the washing tank (2) and the drying tank (3) is fixedly connected to the top of the drying tank (3) and the adsorption tank (4) is fixedly connected to the top of the adsorption tank (4) and the air outlet pipe (5) is fixedly connected to the top of the adsorption tank (4). The connecting pipe (6) is rotatably connected inside the washing tank (2), and the spray pipe (7) is fixedly connected at equal intervals to the outer wall of the connecting pipe (6). The first drying seat (8) is fixedly connected inside the drying tank (3), and the second drying seat (9) is fixedly connected inside the drying tank (3). The adsorption tank (4) is fixedly connected to the partition plate (10), which divides the adsorption tank (4) into a first adsorption zone (11) and a second adsorption zone (12). The conversion assembly is installed inside the drying tank (3).

2. The dry treatment device for acidic VOCs tail gas according to claim 1, characterized in that, The conversion assembly includes: a second drive motor (21), a conversion rod (22), a rotating gear (23), a conversion plate (24), a rack (25), a barrier plate (26), and a barrier bar (27). The second drive motor (21) is fixedly connected inside the drying tank (3). The output end of the second drive motor (21) is fixedly connected to the conversion rod (22). The rotating gear (23) is fixedly connected to the outer wall of the conversion rod (22). The conversion plate (24) is slidably connected inside the drying tank (3). The rack (25) is fixedly connected to one end of the conversion plate (24) near the rotating gear (23). The rack (25) meshes with the rotating gear (23). The barrier plate (26) is fixedly connected to the bottom of the conversion rod (22). The barrier bars (27) are symmetrically fixedly connected to the bottom of the conversion rod (22).

3. The dry treatment device for acidic VOCs tail gas according to claim 1, characterized in that, The washing tank (2) is fixedly connected to the top of the air vent plate (31), and the bottom of the air vent plate (31) is fixedly connected to the first drive motor (32). The output end of the first drive motor (32) is fixedly connected to the connecting pipe (6).

4. The dry treatment device for acidic VOCs tail gas according to claim 1, characterized in that, Multiple sets of the spray pipes (7) are arranged in an alternating manner.

5. The dry treatment device for acidic VOCs tail gas according to claim 2, characterized in that, The drying tank (3) is symmetrically and fixedly connected to a dryer (51). The conversion plate (24) is symmetrically provided with ventilation holes (52). The first drying seat (8) and the second drying seat (9) are fixedly connected to a drying pipe (53) at one end. The output end of the dryer (51) is connected to the drying pipe (53) through the ventilation hole (52).

6. The dry treatment device for acidic VOCs tail gas according to claim 2, characterized in that, The barrier plate (26) is a semi-circular design.

7. The dry treatment device for acidic VOCs tail gas according to claim 2, characterized in that, The top of the barrier plate (26) has flow channels at equal intervals.

8. The dry treatment device for acidic VOCs tail gas according to claim 1, characterized in that, A flow pipe (81) is symmetrically fixedly connected to the side of the partition plate (10) near the second partition zone. A resin column (82) is symmetrically fixedly connected to the adsorption tank (4) in the second partition zone. The first partition zone is connected to the resin column (82) through the flow pipe (81).

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