Waste gas treatment pickling tower

Abstract

The utility model discloses a pickling tower for waste gas treatment. The pickling tower comprises a pickling cavity, a gas inlet pipe, a hollow disc and spraying holes, according to the waste gas treatment pickling tower, a plurality of partition plates are fixedly connected into a tower pool and divide the tower pool into a plurality of pickling cavities, communicating holes are formed in the top faces of the pickling cavities corresponding to a tower body, gas inlet pipes are inserted into the pickling cavities, the top ends of the gas inlet pipes penetrate through the partition plates and then are communicated with the adjacent pickling cavities, and the gas inlet pipe in the pickling cavity at the tail end penetrates out of the tower pool; a hollow disc is fixedly connected to the inner side of the top of the tower body, vent pipes are uniformly and fixedly connected to the hollow disc in a penetrating manner, spraying holes communicated with the hollow disc are uniformly formed in the bottom surface of the hollow disc, multi-stage soaking type acid pickling is performed in the tower pool, spraying acid pickling is performed in cooperation with the hollow disc, waste gas is treated at a time, and the multiple acid pickling effect is formed; compared with the prior art, the pickling efficiency is higher, repeated circulation is not needed, and therefore the pickling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a pickling tower for waste gas treatment. Background Technique

[0002] At present, the pickling tower in the related technology usually includes a pickling tower body. A reaction pool is arranged at the bottom of the inner cavity of the pickling tower body. An exhaust pipe is arranged at the top of the pickling tower body. The bottom end of the pickling tower body is provided with an air inlet pipe. The air inlet pipe leads into the reaction pool. A spray pipe is arranged in the inner cavity of the pickling tower body above the reaction pool. The waste gas is led into the reaction pool through the air inlet pipe for a preliminary reaction. Most of the harmful substances in the waste gas react with the reaction liquid to become liquid or precipitate. After passing through the reaction pool, the waste gas continues to rise in the spray tower body. The spray head sprays out the reaction liquid to further react with the harmful substances in the waste gas, so as to achieve a better purification effect. Then the waste gas is discharged from the exhaust pipe.

[0003] In the prior art with the publication (announcement) number: CN219168121U and the publication (announcement) date: June 13, 2023, a pickling tower for waste gas treatment is disclosed, which includes a pickling tower body. A spray rack is arranged near the upper part of the inner cavity of the pickling tower body. One end of the spray rack is provided with a liquid inlet pipe. The end of the liquid inlet pipe is provided with a reaction liquid storage box. A connecting pipe is arranged at the lower end of the inner cavity of the reaction liquid storage box and communicates with the pickling tower body. The other side end of the inner cavity of the pickling tower body is provided with a waste gas inlet pipe. An air inlet fan is arranged on the outer wall of the pickling tower body near the waste gas inlet pipe. The upper end of the outside of the waste gas inlet pipe is fixedly provided with a gas circulation pipeline. The other end of the gas circulation pipeline is inserted and provided with a top cover. A detection cavity is arranged at the upper end of the top cover. A neutralization treatment cavity is arranged at the lower end of the top cover. In the utility model, under the action of the air inlet fan, it is introduced into the inside of the pickling tower body for a secondary reaction for the second time, which improves the multiple reactions of the waste gas inside the pickling tower body and improves the waste gas purification effect.

[0004] Although the above prior art can circulate and react with the waste gas multiple times to improve the purification effect, however, during the use process, multiple cyclic reactions will increase the purification time and affect the waste gas treatment efficiency. Therefore, a pickling tower for waste gas treatment is proposed to optimize the above prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pickling tower for waste gas treatment to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An exhaust gas treatment pickling tower, including a tower pool, is characterized in that: the bottom surface of the tower pool is fixedly connected with a reaction liquid storage tank, the reaction liquid storage tank uses sulfuric acid as an absorption liquid, the top surface of the tower pool is fixedly connected with a tower body, a plurality of partition plates are fixedly connected in the tower pool, the partition plates divide the tower pool into a plurality of pickling chambers, a communication hole is opened on the top surface of the pickling chamber corresponding to the tower body, an air inlet pipe is inserted into each pickling chamber, the top end of the air inlet pipe penetrates through the partition plate and is communicated with the adjacent pickling chamber, and the air inlet pipe in the tail-end pickling chamber penetrates out of the tower pool for air intake. A hollow disk is fixedly connected to the inner side of the top of the tower body, and air-permeable pipes are uniformly and fixedly connected through the hollow disk. The arrangement of the air-permeable pipes facilitates the upward discharge of the pickled exhaust gas. Spray holes communicated with the hollow disk are uniformly opened on the bottom surface of the hollow disk. The hollow disk is communicated with the reaction liquid storage tank through a first pipeline, and a pump body is installed on the first pipeline. The pump body is fixedly connected to the side wall of the reaction liquid storage tank.

[0008] As a further scheme of the utility model: overflow holes are arranged at the upper parts of the tower pool corresponding to the pickling chambers, the overflow holes are communicated with the upper part of the reaction liquid storage tank through a second connecting pipe, a solenoid valve is installed on the second connecting pipe, the bottoms of the pickling chambers are all communicated with the bottom of the reaction liquid storage tank through a third pipeline, and a pump body is also installed on the third pipeline. The pump body is fixedly connected to the side wall of the reaction liquid storage tank.

[0009] As a further scheme of the utility model: a rotating shaft penetrating through the pickling chambers is horizontally rotatably connected to the upper part of the tower pool, stirring wheels are installed on the rotating shaft corresponding to the pickling chambers, and a motor is fixedly installed on the side wall of the tower pool corresponding to the end of the rotating shaft. The output end of the motor is fixedly connected to the rotating shaft.

[0010] As a further scheme of the utility model: a sewage discharge valve is arranged on the reaction liquid storage tank, and a liquid adding pipe is arranged on the reaction liquid storage tank.

[0011] As a further scheme of the utility model: a tower cover adapted to the tower body is covered on the top surface of the tower body, an air outlet pipe is fixedly connected to the top surface of the tower cover, and a fan is installed in the air outlet pipe.

[0012] As a further scheme of the utility model: a first separation net is arranged on the bottom surface of the tower cover, the first separation net is clamped between the tower cover and the tower body and fixed by bolts. The bolts penetrate through the tower cover, the tower body and the first separation net and are threadedly connected with nuts. Perforations for the bolts to penetrate through are circumferentially opened on the tower cover, the tower body and the first separation net. A second separation net is fixedly connected to the inner side of the top of the tower cover, and a demisting plate and an acid mist neutralization filler layer are arranged between the second separation net and the first separation net.

[0013] As a further scheme of the utility model: the pump body, the solenoid valve, the motor and the fan are all externally connected with a power supply and a switch.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model conducts multi-stage immersion pickling in the tower pool and sprays pickling with a hollow disk to treat the waste gas at one time, forming a multiple pickling effect and directly completing the pickling of the waste gas. Compared with the prior art, the pickling efficiency is higher, and there is no need for repeated circulation, thus improving the pickling efficiency.

[0016] 2. The utility model drives the rotation of the rotating shaft through a motor, and drives the stirring wheel to rotate through the rotating shaft, thereby stirring the sulfuric acid absorption liquid in the pickling cavity, facilitating the full contact between the sulfuric acid absorption liquid and the waste gas, and carrying out reaction absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an acid pickling tower for waste gas treatment.

[0018] Figure 2 It is a side view of an acid pickling tower for waste gas treatment.

[0019] Figure 3 It is a front view of an acid pickling tower for waste gas treatment.

[0020] In the figure: 1. Tower pool; 2. Reaction liquid storage tank; 3. Tower body; 4. Pickling cavity; 5. Communication hole; 6. Air inlet pipe; 7. Hollow disk; 8. Permeable pipe; 9. Spray hole; 10. Pump body; 11. Overflow hole; 12. Solenoid valve; 13. Rotating shaft; 14. Stirring wheel; 15. Motor; 16. Drain valve; 17. Liquid adding pipe; 18. Tower cover; 19. Air outlet pipe; 20. Fan; 21. First partition net; 22. Second partition net; 23. Demisting plate; 24. Acid mist neutralization packing layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 3In the embodiment of the utility model, a waste gas treatment pickling tower includes a tower pool 1, a reaction liquid storage tank 2 is fixedly connected to the bottom surface of the tower pool 1, and the reaction liquid storage tank 2 uses sulfuric acid as an absorption liquid. The top surface of the tower pool 1 is fixedly connected to a tower body 3, and a plurality of partitions are fixedly connected inside the tower pool 1. The partitions divide the tower pool 1 into a plurality of pickling chambers 4. The top surface of the pickling chamber 4 corresponding to the tower body 3 is provided with a connecting hole 5. The pickling chamber 4 is inserted with an air inlet pipe 6. The top end of the air inlet pipe 6 passes through the partition and is connected to the adjacent pickling chamber 4 is connected, the air inlet pipe 6 in the tail end pickling chamber 4 passes through the tower pool 1, so as to be used for air intake, a hollow plate 7 is fixedly connected to the inner side of the top of the tower body 3, and a breathable pipe 8 is evenly penetrated and fixedly connected on the hollow plate 7. The arrangement of the breathable pipe 8 facilitates the rising and discharge of waste gas after pickling, and the bottom surface of the hollow plate 7 is evenly provided with spray holes 9 connected thereto. The hollow plate 7 is connected to the reaction liquid storage tank 2 through a first pipeline, and a pump body 10 is installed on the first pipeline. The pump body 10 is fixedly connected to the side wall of the reaction liquid storage tank 2.

[0023] By performing multi-stage immersion pickling in the tower pool 1 and spray pickling with the hollow disk 7, the waste gas is treated at one time to form multiple pickling effects, and the waste gas pickling is completed directly. Compared with the prior art, the pickling efficiency is higher and there is no need for repeated circulation, thereby improving the pickling efficiency.

[0024] The upper part of the tower pool 1 is laterally rotatably connected with a rotating shaft 13 that passes through the pickling chamber 4. The rotating shaft 13 is equipped with a stirring wheel 14 corresponding to the pickling chamber 4. The side wall of the tower pool 1 is fixedly equipped with a motor 15 corresponding to the end of the rotating shaft 13, and the output end of the motor 15 is fixedly connected to the rotating shaft 13.

[0025] The motor 15 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the stirring wheel 14 to rotate, so as to stir the sulfuric acid absorption liquid in the pickling chamber 4, so as to facilitate the sulfuric acid absorption liquid to fully contact with the exhaust gas for reaction absorption.

[0026] Overflow holes 11 are provided at the upper part of the tower pool 1 corresponding to the pickling chamber 4. The overflow holes 11 are set to prevent the liquid level in the pickling chamber 4 from being too high when replenishing liquid, which may overflow the air inlet pipe 6 and affect ventilation. The overflow holes 11 are connected to the upper part of the reaction liquid storage tank 2 through the second connecting pipe, and the solenoid valve 12 is installed on the second connecting pipe. The bottom of the pickling chamber 4 is connected to the bottom of the reaction liquid storage tank 2 through the third pipeline, and the pump body 10 is also installed on the third pipeline. The pump body 10 is fixedly connected to the side wall of the reaction liquid storage tank 2.

[0027] The solenoid valve 12 is opened, and cooperates with the pump body 10 to circulate the hydrochloric acid absorption liquid, so as to replace the hydrochloric acid absorption liquid in the pickling chamber 4.

[0028] The reaction liquid storage box 2 is provided with a drain valve 16 and a liquid adding pipe 17 .

[0029] The top surface of the tower body 3 is covered with a tower cover 18 adapted thereto. A gas outlet pipe 19 is fixedly connected to the top surface of the tower cover 18, and a fan 20 is installed in the gas outlet pipe 19.

[0030] A first partition net 21 is provided on the bottom surface of the tower cover 18. The first partition net 21 is clamped between the tower cover 18 and the tower body 3 and fixed by bolts. The bolts penetrate through the tower cover 18, the tower body 3 and the first partition net 21 and are threadedly connected with nuts. Perforations for the bolts to penetrate are circumferentially formed on the tower cover 18, the tower body 3 and the first partition net 21. A second partition net 22 is fixedly connected to the inner side of the top of the tower cover 18. An atomization removal plate 23 and an acid mist neutralization filler layer 24 are provided between the second partition net 22 and the first partition net 21. The atomization removal plate 23 is provided to remove the liquid mist contained in the rising gas to form a drying effect. The acid mist neutralization filler layer 24 is used to neutralize the acid mist in the treated gas and reduce its acidity.

[0031] The atomization removal plate 23 and the acid mist neutralization filler layer 24 are clamped and fixedly installed by the first partition net 21 and the second partition net 22. With the first partition net 21 being detachable, it is convenient to replace the acid mist neutralization filler layer 24.

[0032] The pump body 10, the solenoid valve 12, the motor 15 and the fan 20 are all externally connected with a power source and a switch.

[0033] The working principle of the present utility model is as follows:

[0034] During use, hydrochloric acid absorption liquid is added to the reaction liquid storage tank 2 through the liquid adding pipe 17. At this time, the pump body 10 is started, the solenoid valve 12 is opened, and hydrochloric acid absorption liquid is added to the pickling chamber 4 in the tower pool 1 through the third pipeline. The excessive hydrochloric acid absorption liquid overflows through the overflow hole 11 and at the same time flows back to the reaction liquid storage tank 2 through the second pipeline. At this time, the solenoid valve 12 is closed, and the fan 20 is further started to convey the gas in the tower body 3 outwards. Air enters through the air inlet pipe 6. At the same time, the pump body 10 and the motor 15 are started. The motor 15 drives the rotating shaft 13 to rotate, and the stirring wheel 14 is driven to rotate by the rotating shaft 13, so as to stir the sulfuric acid absorption liquid in the pickling chamber 4, facilitating the full contact between the sulfuric acid absorption liquid and the waste gas for reaction absorption. The pump body 10 conveys the hydrochloric acid absorption liquid to the hollow disk 7 through the first pipeline and discharges it through the spray holes 9. At this time, the waste gas passes through the pickling chamber 4 one by one through the air inlet pipe 6 and fully contacts and reacts with the hydrochloric acid absorption liquid through the stirring of the stirring wheel 14, and finally enters the tower body 3 through the communication hole 5. The gas entering the tower body 3 is spray pickled, and continues to rise through the air permeable pipe 8 into the tower cover 18, and is finally extracted by the fan 20 after being treated by the atomization removal plate 23 and the acid mist neutralization filler layer 24, completing the pickling treatment of the waste gas.

[0035] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waste gas treatment pickling tower, comprising a tower pool (1), characterized in that: The bottom surface of the tower pool (1) is fixedly connected to a reaction liquid storage tank (2), the top surface of the tower pool (1) is fixedly connected to a tower body (3), a plurality of partitions are fixedly connected inside the tower pool (1), the partitions divide the tower pool (1) into a plurality of pickling chambers (4), the top surfaces of the pickling chambers (4) corresponding to the tower body (3) are provided with connecting holes (5), the pickling chambers (4) are all inserted with air inlet pipes (6), the top ends of the air inlet pipes (6) penetrate the partitions and are connected to the adjacent pickling chambers (4), and the tail end of the pickling chamber (4) is connected to the pickling chamber (4). An air inlet pipe (6) in the cavity (4) passes through the tower pool (1), a hollow plate (7) is fixedly connected to the inner side of the top of the tower body (3), a vent pipe (8) is evenly passed through and fixedly connected to the hollow plate (7), a bottom surface of the hollow plate (7) is evenly provided with spray holes (9) connected thereto, the hollow plate (7) is connected to the reaction liquid storage tank (2) through a first pipeline, a pump body (10) is installed on the first pipeline, and the pump body (10) is fixedly connected to the side wall of the reaction liquid storage tank (2).

2. A waste gas treatment pickling tower according to claim 1, characterized in that: An overflow hole (11) is provided at the upper part of the tower pool (1) corresponding to the pickling chamber (4), the overflow hole (11) is connected to the upper part of the reaction liquid storage tank (2) through a second connecting pipe, a solenoid valve (12) is installed on the second connecting pipe, and the bottom of the pickling chamber (4) is connected to the bottom of the reaction liquid storage tank (2) through a third pipeline, and a pump body (10) is also installed on the third pipeline.

3. The waste gas treatment pickling tower according to claim 1, characterized in that: The upper part of the tower pool (1) is rotatably connected to a rotating shaft (13) penetrating the pickling chamber (4), and the rotating shaft (13) is provided with a stirring wheel (14) corresponding to the pickling chamber (4). A motor (15) is fixedly installed at the end of the rotating shaft (13) corresponding to the side wall of the tower pool (1), and the output end of the motor (15) is fixedly connected to the rotating shaft (13).

4. The waste gas treatment pickling tower according to claim 1, characterized in that: The reaction liquid storage box (2) is provided with a sewage discharge valve (16), and the reaction liquid storage box (2) is provided with a liquid adding pipe (17).

5. The waste gas treatment pickling tower according to claim 1, characterized in that: The top surface of the tower body (3) is covered with a tower cover (18) matched therewith, the top surface of the tower cover (18) is fixedly connected with an air outlet pipe (19), and a fan (20) is installed in the air outlet pipe (19).

6. A waste gas treatment pickling tower according to claim 5, characterized in that: The bottom surface of the tower cover (18) is provided with a first partition net (21), which is clamped between the tower cover (18) and the tower body (3) and fixed by bolts, and the inner side of the top of the tower cover (18) is fixedly connected with a second partition net (22), and a demisting plate (23) and an acid mist neutralizing filler layer (24) are provided between the second partition net (22) and the first partition net (21).

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