An alkali absorption tower

Abstract

This utility model provides an alkali absorption tower, belonging to the technical field of absorption towers. It includes a tower body with a flow guide plate assembly inside the tower's internal cavity. The flow guide plate assembly includes two sets of baffles and a perforated plate. The baffles divide the tower's internal cavity into two spray chambers and a confluence chamber. Multiple sets of spray supports for suspending spray pipes are provided above the perforated plate. Ventilation holes are provided on both sets of baffles. An electrolysis tank is located on one side of the tower body. Two sets of through slots are provided on the side of the tower body near the electrolysis tank, connecting the electrolysis tank to the tower's internal cavity. Multiple sets of liquid inlets are provided at the top of the electrolysis tank. An outlet is provided at the top of the tower body, and an inlet is provided at one end of the tower body. This device, through the arrangement of the two sets of baffles and the perforated plate in the flow guide plate assembly, enables the orderly guidance of airflow within the tower, improving the gas-liquid contact efficiency of the device.

Description

Technical Field

[0001] This utility model belongs to the field of absorption tower technology, and more specifically, it relates to an alkali absorption tower. Background Technology

[0002] In the field of industrial waste gas treatment, absorption equipment is often used to purify acidic pollutants. For example, in chemical production workshops, in order to make the emitted waste gas meet environmental protection standards, waste gas containing components such as sulfur dioxide and hydrogen chloride often undergoes a neutralization reaction with alkaline solutions. At this time, an alkaline absorption tower is needed to remove the acidic waste gas, so that enterprises can meet the waste gas emission indicators.

[0003] However, traditional alkali absorption towers lack airflow guiding structures, which leads to some flue gas escaping from the tower without sufficient desulfurization due to disordered airflow distribution during peak flue gas volume treatment. Furthermore, the alkali solution in the spray blind zone is prone to incomplete desulfurization reaction due to concentration decay, which can easily cause the sulfur content in the emitted flue gas to exceed the standard. Utility Model Content

[0004] To address the aforementioned technical problems, this invention provides an alkali absorption tower to solve the problem of low absorption efficiency caused by uneven gas-liquid contact in the prior art.

[0005] The purpose and effect of this utility model's alkali absorption tower are achieved by the following specific technical means: An alkali absorption tower includes a tower body, and a guide plate assembly is provided inside the inner cavity of the tower body. The guide plate assembly includes two sets of baffles and a perforated plate. The baffles divide the inner cavity of the tower body into two sets of spray chambers and a confluence chamber. The orifice plate is provided with multiple sets of spray brackets for suspending the spray pipes, and ventilation holes are provided on both sets of the partition plates. An electrolysis tank is provided on one side of the tower body, and two sets of through slots are opened on the side of the tower body near the electrolysis tank. The electrolysis tank is connected to the inner cavity of the tower body through the two sets of through slots. The top of the electrolysis tank has multiple sets of liquid filling holes, the top of the tower body has an air outlet, and one end of the tower body has an air inlet.

[0006] According to a preferred embodiment, one set of the ventilation holes is located near the top of the tower body, and the other set of ventilation holes is located away from the top of the tower body. The manifold is connected to the two sets of spray chambers through the two sets of ventilation holes.

[0007] According to a preferred embodiment, both sets of partitions are provided with a liquid exchange tank at the bottom, and the liquid exchange tank is in the shape of an inverted trapezoid.

[0008] According to a preferred embodiment, the partition is vertically disposed within the inner cavity of the tower body, and the perforated plate is horizontally disposed within the inner cavity of the tower body, with multiple sets of through holes evenly distributed on the perforated plate.

[0009] According to a preferred embodiment, the partition and the perforated plate are made of corrosion-resistant stainless steel.

[0010] According to a preferred embodiment, the spray support is connected to the side wall of the tower body, and the spray support is provided with an arc-shaped groove.

[0011] According to a preferred embodiment, an observation window is provided on the side of the tower body away from the electrolysis tank or on the side of the electrolysis tank that is closer to the electrolysis tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, through the arrangement of two sets of baffles and perforated plates in the guide plate assembly, enables the device to guide the airflow within the tower in an orderly manner, thereby improving the gas-liquid contact efficiency of the device. The device can divide the inner cavity into two sets of spray chambers and a confluence chamber through the baffles. With the upper and lower ventilation holes opened on the two sets of baffles respectively, the airflow forms a circulation path of "spray chamber → confluence chamber → another spray chamber", which prolongs the residence time of the gas in the tower. At the same time, the through holes on the perforated plate can disperse the airflow, avoid local airflow concentration, and allow the gas to fully contact the sprayed alkaline solution. This solves the problem of incomplete absorption caused by airflow turbulence in traditional devices and improves the purification capacity of the device for acidic waste gas. 2. When using this device, the electrolysis tank and the liquid exchange tank work together to achieve dynamic replenishment and balanced distribution of alkali solution, reducing spray blind spots and improving the continuous operation stability of the device. The electrolysis tank is connected to the inner cavity of the tower through a through-slot, allowing for timely replenishment of regenerated alkali solution and preventing local alkali concentration decay; the inverted trapezoidal liquid exchange tank balances the liquid levels in each chamber, preventing uneven alkali distribution; in addition, the arc-shaped slots of the spray support can fix the spray pipes, preventing them from shifting due to airflow impact and ensuring uniform spray coverage. These features together reduce fluctuations in absorption efficiency caused by insufficient alkali solution or spray deviation, ensuring stable operation of the device and improving its industrial applicability and environmental compliance rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram of the assembled structure of this utility model; Figure 3 This is a top view of the present invention; Figure 4 This is the left view of this utility model; Figure 5 This is a schematic diagram of the air inlet of this utility model; Figure 6 This is a schematic diagram of the flow guide plate assembly of this utility model; Figure 7 This is a schematic diagram of the structure of the spray bracket of this utility model; Figure 8 This is a schematic diagram of the second aspect of this utility model.

[0014] In the diagram, the correspondence between component names and drawing numbers is as follows: 11. Tower body; 12. Baffle plate; 13. Orifice plate; 14. Sprayer support; 15. Arc-shaped slot; 16. Electrolysis box; 17. Through slot; 18. Liquid inlet hole; 19. Air outlet hole; 21. Air inlet hole; 22. Air exchange hole; 23. Liquid exchange tank; 24. Observation window. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model. Example:

[0016] like Figures 1 to 8 As shown, this utility model provides an alkali absorption tower, including a tower body 11. A guide plate assembly is provided in the inner cavity of the tower body 11. The guide plate assembly includes two sets of baffles 12 and a perforated plate 13. The baffles 12 divide the inner cavity of the tower body 11 into two sets of spray chambers and a confluence chamber.

[0017] This configuration forces airflow between different cavities through a partitioned structure, avoiding short-circuiting issues caused by a single flow channel, creating independent spaces for full gas-liquid contact, and improving the targeting and efficiency of the absorption reaction.

[0018] Multiple sets of spray brackets 14 for suspending spray pipes are provided above the orifice plate 13, and ventilation holes 22 are opened on both sets of partitions 12.

[0019] With this configuration, the spray bracket 14 can stably fix the spray pipe and ensure the spray coverage area; the ventilation hole 22 provides a channel for the airflow to circulate between the chambers, allowing the gas to pass through the spray area multiple times, prolonging the contact time with the alkaline solution and enhancing the absorption effect.

[0020] An electrolysis box 16 is provided on one side of the tower body 11. Two sets of through slots 17 are provided on the side of the tower body 11 near the electrolysis box 16. The electrolysis box 16 is connected to the inner cavity of the tower body 11 through the two sets of through slots 17.

[0021] With this configuration, the electrolysis tank 16 can replenish the tower with regenerated alkali solution through the channel 17, realizing the recycling of alkali solution, reducing the operation of frequently replacing alkali solution, and avoiding the impact of insufficient local alkali solution concentration on absorption efficiency, thus reducing operating costs.

[0022] The top of the electrolysis tank 16 has multiple sets of liquid filling holes 18, the top of the tower body 11 has an air outlet 19, and one end of the tower body 11 has an air inlet 21.

[0023] With this configuration, the liquid inlet 18 facilitates the addition of raw materials or replenishment of solution to the electrolysis tank 16, the air inlet 21 provides an entry channel for the waste gas to be treated, and the air outlet 19 is used to discharge the purified gas, forming a complete gas-liquid flow and treatment path to ensure the orderly operation of the device.

[0024] One set of ventilation holes 22 is located at the end near the top of the tower body 11, and the other set of ventilation holes 22 is located at the end away from the top of the tower body 11. The confluence chamber is connected to the two sets of spray chambers through the two sets of ventilation holes 22.

[0025] This configuration guides the airflow to form a "bottom-in, top-out" circulation path, allowing the gas to be initially absorbed through the lower spray chamber and then further processed through the confluence chamber into the upper spray chamber, enhancing the depth and thoroughness of the absorption.

[0026] Both sets of partitions 12 have a liquid exchange tank 23 at the bottom, and the liquid exchange tank 23 is in the shape of an inverted trapezoid.

[0027] With this design, the inverted ladder-shaped liquid exchange tank 23 can guide the alkaline solution at the bottom of each chamber to circulate with each other, balance the liquid level and concentration in different areas, avoid corrosion problems caused by local liquid accumulation or alkaline solution retention, and at the same time ensure uniform distribution of alkaline solution and enhance the stability of absorption reaction.

[0028] The partition plate 12 is vertically installed inside the tower body 11, and the perforated plate 13 is horizontally installed inside the tower body 11, with multiple sets of through holes evenly distributed on the perforated plate 13.

[0029] With this configuration, the vertical partition 12 can separate the cavity, while the horizontal perforated plate 13 can disperse and turbulent the rising airflow. The through holes guide the gas to pass evenly through the perforated plate 13, so that the gas can be fully mixed with the alkaline solution sprayed above, avoiding the absorption blind zone formed by concentrated airflow.

[0030] The partition 12 and the perforated plate 13 are made of corrosion-resistant stainless steel.

[0031] This design resists the corrosive effects of alkaline solutions and acidic waste gases inside the tower, extends the service life of the guide plate assembly, reduces downtime and maintenance due to component damage, ensures long-term stable operation of the equipment, and adapts to complex industrial environments. The spray support 14 is connected to the side wall of the tower body 11, and the spray support 14 is equipped with an arc-shaped groove 15.

[0032] This design enhances the load-bearing capacity and stability of the support structure through the side wall connection method. The arc-shaped slot 15 can engage the spray pipe, preventing it from shaking or shifting under the impact of airflow, ensuring accurate spray direction and coverage, and avoiding a decrease in absorption efficiency due to pipe displacement.

[0033] like Figure 2 and Figure 8 As shown, an observation window 24 is provided on the side of the tower body 11 that is far from the electrolysis tank 16 or on the side that is close to the electrolysis tank 16.

[0034] This setup allows for observation of the spraying status, airflow distribution, and liquid accumulation within the tower from different angles, facilitating timely detection of issues such as uneven spraying and blockages, shortening troubleshooting time, improving the ease of maintenance, and ensuring that the treatment effect always meets standards.

[0035] The specific usage and function of this embodiment are as follows: In operation, the acidic waste gas to be treated enters the inner cavity of tower 11 through the air inlet 21 at one end of the tower body 11, first entering one set of spray chambers. At this time, the spray pipe suspended above the orifice plate 13 by the spray support 14 begins to spray alkaline solution. The arc-shaped groove 15 on the spray support 14 can fix the spray pipe, preventing the pipe from shifting due to airflow impact and ensuring that the alkaline solution covers the spray chamber. As the waste gas rises, it passes through the through holes on the orifice plate 13. The horizontally arranged orifice plate 13 disperses the airflow, allowing the gas to fully contact the alkaline solution, thus initially completing the neutralization reaction of the acidic substances. Incompletely absorbed waste gas enters the manifold through the ventilation holes 22 on the baffle 12, away from the top of the tower body 11. It then enters another set of spray chambers through ventilation holes 22 on another set of baffles 12, closer to the top of the tower body 11, where it comes into contact with the alkaline solution again for further treatment. The two sets of baffles 12 are vertically arranged, strictly separating independent airflow paths and forcing the gas to pass through the spray zone twice, significantly improving absorption efficiency. The treated clean gas is finally discharged from the outlet 19 at the top of the tower body 11.

[0036] During operation, the electrolysis tank 16 replenishes the two sets of spray chambers with regenerated alkali solution through the through-slot 17. Operators can add raw materials through the liquid inlet 18 at the top of the electrolysis tank 16. The inverted trapezoidal liquid exchange tanks 23 at the bottom of the two sets of baffles 12 allow the alkali solution in each chamber to circulate, balancing the liquid level and concentration, and preventing localized alkali shortages from affecting the absorption effect. Because the baffles 12 and the orifice plate 13 are made of corrosion-resistant stainless steel, they can withstand acid and alkali corrosion for a long time, ensuring stable operation of the device.

[0037] Meanwhile, operators can monitor the spraying status, airflow distribution, and liquid accumulation through the observation windows 24 on both sides of the tower body 11, promptly identifying and addressing issues such as uneven spraying and blockages. The entire process, through the synergistic effects of flow guidance, spraying, and circulation replenishment, achieves the purification of acidic waste gas, and is stable in operation and easy to maintain, making it suitable for various industrial waste gas treatment scenarios.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. An alkali absorption tower, comprising a tower body (11), characterized in that: The inner cavity of the tower body (11) is provided with a flow guide plate group, which includes two sets of baffles (12) and perforated plates (13). The baffles (12) divide the inner cavity of the tower body (11) into two sets of spray chambers and a confluence chamber. The perforated plate (13) is provided with multiple sets of spray brackets (14) for suspending the spray pipes, and ventilation holes (22) are opened on both sets of partitions (12). An electrolysis tank (16) is provided on one side of the tower body (11). Two sets of through slots (17) are opened on the side of the tower body (11) near the electrolysis tank (16). The electrolysis tank (16) is connected to the inner cavity of the tower body (11) through the two sets of through slots (17). The electrolysis tank (16) has multiple sets of liquid placement holes (18) on the top, the tower body (11) has an air outlet (19) on the top, and an air inlet (21) at one end of the tower body (11).

2. The alkali absorption tower according to claim 1, characterized in that: One set of the ventilation holes (22) is located near the top of the tower body (11), and the other set of ventilation holes (22) is located away from the top of the tower body (11). The confluence chamber is connected to the two sets of spray chambers through the two sets of ventilation holes (22).

3. An alkali absorption tower according to claim 2, characterized in that: Both sets of partitions (12) have a liquid exchange tank (23) at the bottom, and the liquid exchange tank (23) is in the shape of an inverted trapezoid.

4. An alkali absorption tower according to claim 3, characterized in that: The partition plate (12) is vertically disposed in the inner cavity of the tower body (11), and the perforated plate (13) is horizontally disposed in the inner cavity of the tower body (11). Multiple sets of through holes are evenly distributed on the perforated plate (13).

5. An alkali absorption tower according to claim 4, characterized in that: The partition (12) and the perforated plate (13) are made of corrosion-resistant stainless steel.

6. An alkali absorption tower according to claim 1, characterized in that: The spray bracket (14) is connected to the side wall of the tower body (11), and the spray bracket (14) is provided with an arc-shaped slot (15).

7. An alkali absorption tower according to claim 1, characterized in that: An observation window (24) is provided on the side of the tower body (11) away from the electrolysis tank (16) or on the side of the electrolysis tank (16) closer to it.

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