A sulfuric acid absorption tower for zinc sulfate heptahydrate

Abstract

The utility model discloses a kind of sulfuric acid absorption towers for zinc sulfate heptahydrate, including tower body mechanism, still including the packing absorption mechanism for containing packing and the poking extrusion mechanism for avoiding crystallization blockage by poking to packing and the bounce mechanism for improving poking effect by cooperating with the poking extrusion mechanism, the packing absorption mechanism is installed in the tower body mechanism inside, the poking extrusion mechanism is vertically installed on the packing absorption mechanism, the bounce mechanism is installed on the poking extrusion mechanism top. Impact force of water flow cooperates with poking extrusion mechanism, so that conical cover can drive main shaft and extruding block rotation, so that top separates the packing inside frame and pokes, so that packing is mutually rubbed, so that crystal on surface is rubbed off, improve the flow effect of liquid, so as to improve the combination between sulfuric acid gas and liquid, improve absorption effect.

Description

Technical Field

[0001] This utility model relates to the field of zinc sulfate heptahydrate processing, and in particular to a sulfuric acid absorption tower for zinc sulfate heptahydrate. Background Technology

[0002] The sulfuric acid absorption tower used in the production of zinc sulfate heptahydrate is a gas-liquid mass transfer device for capturing and absorbing sulfuric acid-containing gases. Its core structure typically includes a packing layer, a liquid spraying device, and a gas-liquid distribution assembly. During operation, sulfuric acid-containing gas flows upward through the packing layer, while the absorbent is sprayed down from the top of the tower, forming a liquid film on the packing surface. The gas and liquid phases come into countercurrent contact, and the sulfuric acid gas dissolves in the liquid to form sulfuric acid. Subsequent neutralization and crystallization processes yield zinc sulfate heptahydrate. This equipment increases the gas-liquid contact area and enhances the mass transfer process through the packing, achieving highly efficient absorption of sulfuric acid gas. It is a crucial link between flue gas treatment and zinc salt preparation.

[0003] In the prior art, compared with the Chinese utility model with announcement number CN221950923U, an environmentally friendly sulfuric acid absorption tower for zinc sulfate heptahydrate is disclosed. It absorbs acidic waste gas through a multi-stage purification structure. However, it was found in the use of the purification tower that a large amount of crystals are generated after the gas and liquid are mixed. If the crystals accumulate and cause the packing to be blocked, the treatment efficiency and treatment effect will be reduced, and the packing may even become too heavy and fall off. Utility Model Content

[0004] The purpose of this invention is to provide a sulfuric acid absorption tower for zinc sulfate heptahydrate in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A sulfuric acid absorption tower for zinc sulfate heptahydrate includes a tower body, a packing absorption mechanism for holding packing material, a pushing and squeezing mechanism for pushing the packing material to avoid crystallization blockage, and a bouncing mechanism for cooperating with the pushing and squeezing mechanism to improve the pushing effect. The packing absorption mechanism is installed inside the tower body, the pushing and squeezing mechanism is vertically installed on the packing absorption mechanism, and the bouncing mechanism is installed on top of the pushing and squeezing mechanism.

[0007] The packing absorption mechanism includes a packing fixing shell, a top separation frame, and a bottom mesh cover plate. The packing fixing shell is fixed inside the tower body of the tower body mechanism. A top separation frame is provided at the top of the packing fixing shell, and a bottom mesh cover plate is provided at the bottom of the packing fixing shell.

[0008] The bouncing mechanism includes a fixed plate, which is fixed to the upper end of the top separating frame. A sealing cylinder is provided on the top of the fixed plate. The main shaft of the actuating and squeezing mechanism is provided inside the sealing cylinder. The main shaft passes through the sealing cylinder and the packing fixing shell until it extends out of the bottom of the packing fixing shell. An impact blade is installed at the bottom of the main shaft. A conical cover is installed at the bottom of the impact blade. A squeezing block is installed on the part of the main shaft located inside the packing fixing shell. The top of the main shaft cooperates with the sealing cylinder through a squeezing spring. The side of the main shaft cooperates with the sealing cylinder through a lifting assembly.

[0009] Preferably, the lifting mechanism includes a limiting block and a limiting groove. The limiting block is formed on the outer side of the top of the main shaft, and the limiting groove is formed on the inner wall of the sealing cylinder. The limiting block and the limiting groove correspond one-to-one.

[0010] Preferably, the limiting block and the limiting groove are provided in three sets, and the limiting groove is a spiral groove.

[0011] Preferably, the extrusion block has a spiral structure, and the top and bottom ends of the extrusion block have rounded corners.

[0012] Preferably, five sets of the actuating and squeezing mechanisms are provided on the top separating frame, and one set of the actuating and squeezing mechanisms is provided in the center of the top separating frame, while the other four sets are arranged in a circumferential array outside the center of the top separating frame.

[0013] Preferably, the extrusion block at the center position has the opposite spiral direction to the extrusion blocks on the outer side.

[0014] Preferably, the impact blade is a conical helical blade, and the bottom dimension of the conical cover is one-third of the bottom dimension of the impact blade.

[0015] Compared with existing technologies, the beneficial effects are as follows:

[0016] 1. The impact force of the water flow, combined with the squeezing mechanism, enables the conical cover to drive the main shaft and squeezing block to rotate, thereby causing the packing inside the top separation frame to move and rub against each other, thus rubbing off the crystals that are crystallized on the surface, improving the flow effect of the liquid, thereby improving the binding between sulfuric acid gas and liquid, and improving the absorption effect.

[0017] 2. The bouncing mechanism enhances the up-and-down bouncing effect of the pressing mechanism, thereby improving the pressing mechanism's pressing capability. Furthermore, the pressing mechanism, bouncing mechanism, and torsion mechanism are independent structures, making installation and modification on existing equipment simple and reducing improvement costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model;

[0020] Figure 2 This is a schematic diagram of the first structure of the packing absorption mechanism of the sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model;

[0021] Figure 3 This is a schematic diagram of the second structure of the packing absorption mechanism of the sulfuric acid absorption tower for zinc sulfate heptahydrate described in this utility model;

[0022] Figure 4 This is a schematic diagram of the pushing and squeezing mechanism of a sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model;

[0023] Figure 5 This is a schematic diagram of the bouncing mechanism of a sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the sealed cylinder of a sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model;

[0025] Figure 7 This is a schematic diagram of the limiting tank structure of a sulfuric acid absorption tower for zinc sulfate heptahydrate as described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Tower body mechanism; 2. Packing absorption mechanism; 3. Pushing and squeezing mechanism; 4. Bounce mechanism; 11. Tower body; 12. Diverter hood; 13. Nozzle; 21. Packing fixing shell; 22. Top separation frame; 23. Bottom mesh cover plate; 31. Impact blade; 32. Conical cover; 33. Main shaft; 34. Squeezing block; 41. Fixing plate; 42. Sealing cylinder; 43. Squeezing spring; 44. Limiting block; 45. Limiting groove. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-7 As shown, a sulfuric acid absorption tower for zinc sulfate heptahydrate includes a tower body structure 1, a packing absorption mechanism 2 for holding packing material, a pushing and squeezing mechanism 3 for pushing the packing material to avoid crystallization blockage, and a bouncing mechanism 4 for cooperating with the pushing and squeezing mechanism 3 to improve the pushing effect. The packing absorption mechanism 2 is installed inside the tower body structure 1, the pushing and squeezing mechanism 3 is vertically installed on the packing absorption mechanism 2, and the bouncing mechanism 4 is installed on the top of the pushing and squeezing mechanism 3.

[0032] The packing absorption mechanism 2 includes a packing fixing shell 21, a top separation frame 22, and a bottom mesh cover plate 23. The packing fixing shell 21 is fixed inside the tower body 11 of the tower body mechanism 1. The top separation frame 22 is provided at the top of the packing fixing shell 21, and the bottom mesh cover plate 23 is provided at the bottom of the packing fixing shell 21.

[0033] The bouncing mechanism 4 includes a fixed plate 41, which is fixed to the upper end of the top separation frame 22. A sealing cylinder 42 is provided on the top of the fixed plate 41. The main shaft 33 of the pushing and squeezing mechanism 3 is provided inside the sealing cylinder 42. The main shaft 33 passes through the sealing cylinder 42 and the packing fixing shell 21 until it extends to the bottom of the packing fixing shell 21. An impact blade 31 is installed at the bottom of the main shaft 33. A conical cover 32 is installed at the bottom of the impact blade 31. A squeezing block 34 is installed on the part of the main shaft 33 located inside the packing fixing shell 21. The top of the main shaft 33 cooperates with the sealing cylinder 42 through a squeezing spring 43. The side of the main shaft 33 cooperates with the sealing cylinder 42 through a lifting component.

[0034] In this embodiment, the lifting mechanism includes a limiting block 44 and a limiting groove 45. The limiting block 44 is formed on the outer side of the top of the main shaft 33, and the limiting groove 45 is formed on the inner wall of the sealing cylinder 42. The limiting block 44 and the limiting groove 45 correspond one-to-one.

[0035] In this embodiment, three sets of limiting blocks 44 and limiting grooves 45 are provided, and the limiting grooves 45 are spiral grooves. By utilizing the spiral grooves, when the main shaft 33 and the limiting blocks 44 rotate, they are squeezed by the limiting grooves 45, thereby driving the main shaft 33 and the squeezing block 34 to rise, and thus moving the filler.

[0036] In this embodiment, the squeezing block 34 has a spiral structure, and the top and bottom ends of the squeezing block 34 are rounded to improve the prying effect.

[0037] In this embodiment, five sets of actuating and squeezing mechanisms 3 are provided on the top separating frame 22, and one set of actuating and squeezing mechanisms 3 is provided in the center of the top separating frame 22, while the other four sets of circumferential arrays are provided on the outer side of the center of the top separating frame 22.

[0038] In this embodiment, the extrusion block 34 at the center position has the opposite spiral direction to the extrusion block 34 on the outer side, so as to avoid forming a stable spiral extrusion, creating a blank area that cannot frictionally engage with the filler.

[0039] In this embodiment, the impact blade 31 is a conical helical blade, and the bottom dimension of the conical cover 32 is one-third of the bottom dimension of the impact blade 31.

[0040] Working principle: Similar to existing purification towers, the exhaust gas is transmitted from the bottom of the tower body 11 into the interior of the tower body 11, and enters the packing fixing shell 21 through the bottom mesh cover plate 23 to mix with the packing. At this time, the top nozzle 13 sprays out the absorbent liquid, which flows and sprays from top to bottom, thereby mixing and contacting with the exhaust gas for absorption. During the mixing process, the absorbent liquid will be discharged from the bottom of the bottom mesh cover plate 23 and impact the impact blades 31. The impact blades 31 are impacted by the liquid, thereby driving the main shaft 33 and the extrusion block 34 to rotate. The extrusion block 34 will move and rub against the packing inside the packing fixing shell 21, causing the packing to roll.

[0041] During this process, the crystals on the surface of the packing are rubbed together, and the packings rub against each other, preventing crystal accumulation and the situation where the gaps are filled and the waste gas and absorbent cannot pass through. At the same time, when the main shaft 33 rotates, the limiting block 44 at the top of the main shaft 33 cooperates with the limiting groove 45, and the main shaft 33 and the extrusion block 34 are driven to rise. Because the top of the main shaft 33 is supported by the extrusion spring 43, after being lifted, it is elastically supported and falls quickly, providing an oscillating force to the main shaft 33 and the extrusion block 34, thereby increasing the interaction force between the extrusion block 34 and the packing and improving the effect of removing crystals.

[0042] 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 claimed utility model.

Claims

1. A sulfuric acid absorption tower for zinc sulfate heptahydrate, comprising a tower body structure (1), characterized in that: It also includes a packing absorption mechanism (2) for holding the packing and a pushing and squeezing mechanism (3) for pushing the packing to avoid crystallization blockage and a bouncing mechanism (4) for cooperating with the pushing and squeezing mechanism (3) to improve the pushing effect. The packing absorption mechanism (2) is installed inside the tower body mechanism (1), the pushing and squeezing mechanism (3) is installed vertically on the packing absorption mechanism (2), and the bouncing mechanism (4) is installed on the top of the pushing and squeezing mechanism (3). The packing absorption mechanism (2) includes a packing fixing shell (21), a top separation frame (22), and a bottom mesh cover plate (23). The packing fixing shell (21) is fixed inside the tower body (11) of the tower body mechanism (1). The top of the packing fixing shell (21) is provided with a top separation frame (22), and the bottom of the packing fixing shell (21) is provided with a bottom mesh cover plate (23). The bouncing mechanism (4) includes a fixed plate (41), which is fixed to the upper end of the top separation frame (22). A sealing cylinder (42) is provided on the top of the fixed plate (41). The main shaft (33) of the actuating squeezing mechanism (3) is provided inside the sealing cylinder (42). The main shaft (33) passes through the sealing cylinder (42) and the packing fixing shell (21) until it extends to the bottom of the packing fixing shell (21). An impact blade (31) is installed at the bottom of the main shaft (33). A conical cover (32) is installed at the bottom of the impact blade (31). A squeezing block (34) is installed on the part of the main shaft (33) located inside the packing fixing shell (21). The top of the main shaft (33) cooperates with the sealing cylinder (42) through a squeezing spring (43). The side of the main shaft (33) cooperates with the sealing cylinder (42) through a lifting component.

2. The sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 1, characterized in that: The lifting mechanism includes a limiting block (44) and a limiting groove (45). The limiting block (44) is formed on the outer side of the top of the main shaft (33), and the limiting groove (45) is formed on the inner wall of the sealing cylinder (42). The limiting block (44) and the limiting groove (45) correspond one-to-one.

3. The sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 2, characterized in that: The limiting block (44) and the limiting groove (45) are provided in three sets, and the limiting groove (45) is a spiral groove.

4. The sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 3, characterized in that: The extrusion block (34) has a spiral structure, and the top and bottom ends of the extrusion block (34) are rounded.

5. A sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 4, characterized in that: Five sets of the actuating and squeezing mechanism (3) are provided on the top separation frame (22), and one set of the actuating and squeezing mechanism (3) is provided in the center of the top separation frame (22), while the other four sets of circumferential arrays are provided outside the center of the top separation frame (22).

6. A sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 5, characterized in that: The extrusion block (34) at the center position has the opposite spiral direction to the extrusion block (34) on the outer side.

7. A sulfuric acid absorption tower for zinc sulfate heptahydrate according to claim 6, characterized in that: The impact blade (31) is a conical helical blade, and the bottom dimension of the conical cover (32) is one-third of the bottom dimension of the impact blade (31).

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