Device for batch treatment of acidic tail gas

Abstract

The utility model relates to the technical field of tail gas treatment, in particular to a device for treating acid tail gas in batches, which comprises a collecting base and a spraying mechanism, a first washing tower, a second washing tower and two mixed liquid water tanks with partition plates are arranged on the collecting base; the spraying mechanism is arranged in the first washing tower and the second washing tower and comprises a first spraying frame which is arranged on the first washing tower and the second washing tower and is provided with a through hole, a second spraying frame arranged above the through hole and a plurality of spraying heads arranged on the first spraying frame and the second spraying frame; the axis center line of the second spraying frame coincides with the axis of the through hole, and the diameter of the second spraying frame is larger than that of the through hole. According to the utility model, the efficiency of spraying and absorbing gas after entering the washing tower is improved, so that the tail gas treatment quality is improved, and the practicability of the device is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas treatment technical field, in particular to a device of batch processing sour tail gas. BACKGROUND

[0002] The acid tail gas treatment device is the key equipment for controlling and reducing the acid gas emission in industrial production, and its basic function is to convert the acid gas into harmless or more easily handled substances through chemical reaction.

[0003] The Chinese patent with the publication number CN212309310U discloses a device of batch processing sour tail gas, which comprises a blower, a first-stage washing tower, a second-stage washing tower, an activated carbon adsorption box and a centrifugal fan, the blower is connected with the gas input port of the first-stage washing tower, the gas output port of the first-stage washing tower is connected with the gas input port of the second-stage washing tower, the gas output port of the second-stage washing tower is connected with a discharge pipeline, the centrifugal fan is in communication with the discharge pipeline, the activated carbon adsorption box is arranged on the discharge pipeline, the bottom of the first-stage washing tower is provided with a first collecting tank, and the bottom of the second-stage washing tower is provided with a second collecting tank.

[0004] However, the above technical solution has the following disadvantages: although the device can timely remove the suspended silica generated after the tail gas is absorbed, does not affect the production operation, the first-stage washing tower and the second-stage washing tower only directly spray through the upper and lower two groups of spray nozzles, which not only easily causes resource waste, but also is difficult to efficiently treat the gas, part of the gas can pass through the gap between the sprayed alkali solution droplets, thereby reducing the absorption effect on the tail gas. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art, and provides a device of batch processing sour tail gas, improves the efficiency of the gas sprayed and absorbed after entering the washing tower, thereby improving the treatment quality of the tail gas and optimizing the practicality of the device.

[0006] The technical scheme of the utility model relates to a device of batch processing sour tail gas, which comprises a collecting base and a spraying mechanism, the collecting base is provided with a first washing tower, a second washing tower and two mixed liquid tanks with partitions, the spraying mechanism is arranged in the first washing tower and the second washing tower, and comprises a first spraying frame with a through hole arranged on the first washing tower and the second washing tower, a second spraying frame arranged above the through hole and a plurality of spraying heads arranged on the first spraying frame and the second spraying frame, the shaft center line of the second spraying frame coincides with the axis of the through hole, and the diameter of the second spraying frame is larger than that of the through hole.

[0007] Preferably, the first washing tower is provided with an air inlet pipe, and a connecting pipe is arranged in communication between the first washing tower and the second washing tower.

[0008] Preferably, a connecting column is coaxially arranged on the second spraying frame, and a mounting plate is arranged on the connecting column and arranged on the first washing tower.

[0009] Preferably, a filter screen is arranged in the first washing tower and the second washing tower, and a filler layer is arranged on the filter screen.

[0010] Preferably, the mixed liquid tank is provided with a feeding funnel and a water inlet pipe, and a stirring and mixing mechanism is arranged in the mixed liquid tank.

[0011] Preferably, the stirring and mixing mechanism comprises a rotating shaft rotatably connected to the mixed liquid tank, a first gear and a fourth gear coaxially arranged at two ends of the rotating shaft, three stirring rods arranged in an annular array and rotatably connected to the partition plate, a plurality of stirring blades arranged on the stirring rods, a second gear coaxially arranged on the stirring rod, a motor arranged on the mixed liquid tank, and a third gear drivingly connected to the motor, the first gear is meshedly connected with the three second gears, and the third gear is meshedly connected with the fourth gear.

[0012] Preferably, a water pump is arranged on the mixed liquid tank, the water pump is arranged in communication with a liquid guide pipe, and the first spraying frame and the second spraying frame are arranged in communication with the liquid guide pipe.

[0013] Preferably, the collecting base is provided with an activated carbon adsorption tank in communication with an exhaust port of the second washing tower.

[0014] Compared with the prior art, the utility model has the advantages of the following beneficial technical effects:

[0015] The spraying mechanism can avoid the situation that the gap existing in the rain curtain formed during spraying causes part of the tail gas not to be effectively treated, and the filler layer is arranged to improve the contact interface of gas and liquid, so that the acid components in the waste gas and the absorption liquid are fully contacted and chemically reacted, the acid gas in the waste gas is effectively converted into harmless or easily treated substances, the treatment effect of the tail gas is ensured, and good practicability is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model embodiment;

[0017] Figure 2 It is an internal structure schematic view of the first washing tower;

[0018] Figure 3 It is a structural schematic view of the spraying assembly;

[0019] Figure 4This is a partial cross-sectional schematic diagram of the mixed liquid tank.

[0020] Reference numerals: 1. Collection base; 2. First washing tower; 3. Second washing tower; 4. Air inlet pipe; 5. Filter screen; 6. Packing layer; 7. First spray frame; 8. Second spray frame; 9. Spray head; 10. Connecting column; 11. Mounting plate; 12. Through hole; 13. Connecting pipe; 14. Mixed liquid tank; 15. Baffle plate; 16. Feed funnel; 17. Water inlet pipe; 18. Water pump; 19. Liquid guide pipe; 20. Rotating shaft; 21. First gear; 22. Stirring rod; 23. Stirring blade; 24. Second gear; 25. Motor; 26. Third gear; 27. Fourth gear; 28. Activated carbon adsorption box. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-4 As shown, the device for batch processing of acidic exhaust gas proposed in this embodiment includes a collection base 1 and a spraying mechanism; the collection base 1 is provided with a first scrubbing tower 2, a second scrubbing tower 3 and two mixed liquid tanks 14 with partitions 15, the first scrubbing tower 2 is provided with an air inlet pipe 4, and a connecting pipe 13 is provided between the first scrubbing tower 2 and the second scrubbing tower 3.

[0023] like Figure 2 and Figure 3 As shown, the spraying mechanism is located inside the first washing tower 2 and the second washing tower 3, including a first spray frame 7 with a through hole 12 installed on the first washing tower 2 and the second washing tower 3, a second spray frame 8 installed above the through hole 12, and a plurality of spray heads 9 installed on the first spray frame 7 and the second spray frame 8. The center line of the axis of the second spray frame 8 coincides with the axis of the through hole 12, and the diameter of the second spray frame 8 is larger than that of the through hole 12. A connecting column 10 is coaxially installed on the second spray frame 8, and a mounting plate 11 is installed on the connecting column 10. The mounting plate 11 is installed on the first washing tower 2.

[0024] Both the first washing tower 2 and the second washing tower 3 are equipped with filter screens 5, and the filter screens 5 are equipped with a packing layer 6.

[0025] In this embodiment, when the tail gas is treated, the tail gas is first introduced into the first washing tower 2 through the gas inlet pipe 4, and the plurality of spray heads 9 of the first spray frame 7 and the second spray frame 8 simultaneously perform spray absorption. Since the gas must pass through the through holes 12 and the gap between the first spray frame 7 and the second spray frame 8 during the rising process, the absorption liquid will inevitably fully contact the gas when it drops, avoiding the situation that part of the tail gas is not effectively treated due to the existence of gaps in the spray curtain. The tail gas discharged from the first washing tower 2 is treated again by the second washing tower 3, which ensures the treatment effect of the tail gas. At the same time, the filler layer 6 is arranged to increase the contact interface of gas and liquid, so as to promote the full contact and chemical reaction between the acidic components in the waste gas and the absorption liquid, effectively convert the acidic gas in the waste gas into harmless or easily treated substances, and thus achieve the purpose of purification.

[0026] Embodiment two

[0027] As shown in Figure 1 , Figure 2 and Figure 4 , the device for batch processing of acidic tail gas proposed in this embodiment is compared with embodiment one. In this embodiment, the mixed liquid tank 14 is provided with a feeding funnel 16 and a water inlet pipe 17. The inside of the mixed liquid tank 14 is provided with a stirring and mixing mechanism. The feeding funnel 16 is used for adding reagents, and the water inlet pipe 17 is used for conveying water. The reagents are quickly dissolved in water by the stirring and mixing mechanism to perform spray absorption treatment on the waste gas.

[0028] The stirring and mixing mechanism includes a rotating shaft 20 rotatably connected to the mixed liquid tank 14, a first gear 21 and a fourth gear 27 coaxially arranged at both ends of the rotating shaft 20, three stirring rods 22 arranged in an annular array and rotatably connected to the partition plate 15, a plurality of stirring blades 23 arranged on the stirring rods 22, a second gear 24 coaxially arranged on the stirring rod 22, a motor 25 arranged on the mixed liquid tank 14, and a third gear 26 drivingly connected to the motor 25. The first gear 21 is meshingly connected with the three second gears 24, and the third gear 26 is meshingly connected with the fourth gear 27.

[0029] The mixed liquid tank 14 is provided with a water pump 18, and the water pump 18 is communicated with a liquid guide pipe 19. The first spray frame 7 and the second spray frame 8 are both communicated with the liquid guide pipe 19.

[0030] In this embodiment, after the reagent and water are both delivered into the mixed liquid tank 14, the motor 25 is started to drive the fourth gear 27 to mesh with the third gear 26. The third gear 26 drives the rotating shaft 20 to rotate with the first gear 21. Then, the first gear 21 meshes with the three second gears 24, causing the three stirring rods 22 to drive multiple sets of stirring blades 23 to rotate. The mixing efficiency is high, and the reagent is evenly distributed in the water, which is beneficial to the formation rate of the absorbent liquid. After the absorbent liquid is prepared, it is transported into the interior of the first spray frame 7 and the second spray frame 8 through the water pump 18 and the liquid guide pipe 19, and finally sprayed out from the spray head 9 to achieve the treatment of exhaust gas.

[0031] Example 3

[0032] like Figure 1 As shown in the figure, the device for batch processing of acidic exhaust gas proposed in this embodiment has an activated carbon adsorption box 28 that is connected to the exhaust port of the second scrubbing tower 3, compared to the first embodiment.

[0033] After the gas undergoes secondary spraying, it passes through the activated carbon adsorption box 28 to remove trace amounts of organic waste gas. Finally, it is discharged into the high atmosphere by a centrifugal fan (not shown). At the same time, the waste gas treatment causes the generated suspended solids, precipitates and waste liquid to enter the collection base 1 for centralized treatment and resource recycling.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An apparatus for batch treating an acid tail gas, the apparatus comprising: The utility model relates to a kind of collection base (1), which is provided with first washing tower (2), second washing tower (3) and two mixed liquid water tank (14) with partition (15) on it;Spraying mechanism is arranged inside first washing tower (2) and second washing tower (3), including first spraying frame (7) being arranged on first washing tower (2) and second washing tower (3) and having through hole (12), second spraying frame (8) being arranged above through hole (12), and multiple spray heads (9) being arranged on first spraying frame (7) and second spraying frame (8), the axis center line of second spraying frame (8) coincides with the axis of through hole (12) and the diameter of second spraying frame (8) is larger than through hole (12). First washing tower (2) is provided with air inlet pipe (4), and connecting pipe (13) is arranged in communication between first washing tower (2) and second washing tower (3). Second spraying frame (8) is coaxially provided with connecting column (10), connecting column (10) is provided with mounting plate (11), and mounting plate (11) is arranged on first washing tower (2).

2. The apparatus for treating a batch of sour tail gas of claim 1, wherein, First washing tower (2) and second washing tower (3) are both provided with filter screen (5), and filter screen (5) is provided with filler layer (6).

3. The apparatus for treating a batch of sour tail gas of claim 1, wherein, Mixed liquid water tank (14) is provided with feed hopper (16) and water inlet pipe (17), and mixed liquid water tank (14) is provided with stirring and mixing mechanism inside.

4. The apparatus for treating a batch of sour tail gas of claim 1, wherein, Stirring and mixing mechanism includes rotating shaft (20) being rotatably connected to mixed liquid water tank (14), first gear (21) and fourth gear (27) being coaxially arranged at both ends of rotating shaft (20) respectively, three stirring rods (22) being arranged in annular array and rotatably connected to partition (15), multiple stirring blades (23) being arranged on stirring rod (22), second gear (24) being coaxially arranged on stirring rod (22), motor (25) being arranged on mixed liquid water tank (14), and third gear (26) being drivingly connected to motor (25), first gear (21) is meshingly connected to three second gears (24), and third gear (26) is meshingly connected to fourth gear (27).

5. The apparatus for bulk processing of acid tail gas according to claim 1, wherein, Mixed liquid water tank (14) is provided with water pump (18), water pump (18) is provided with liquid guide pipe (19) in communication, and first spraying frame (7) and second spraying frame (8) are both provided with liquid guide pipe (19) in communication.

6. A device for bulk processing of acid tail gas according to claim 5, characterized in that, Collection base (1) is provided with activated carbon adsorption tank (28) in communication with the exhaust port of second washing tower (3).

7. The apparatus for bulk processing of acid tail gas according to claim 1, wherein, ​ 8. The apparatus for bulk processing of acid tail gas according to claim 1, wherein, ​

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