Solution dehumidification device
By using multi-layer inclined perforated thin plates and spray devices in the solution dehumidification device, combined with float control and solar regeneration system, the problem of low gas-liquid contact efficiency of traditional packed towers under high humidity load is solved, achieving efficient dehumidification and low energy consumption.
Patent Information
- Application Number
- CN202520167109.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Traditional packed tower structures have low gas-liquid contact efficiency under high humidity loads or high gas flow rates, resulting in poor dehumidification performance and uneven liquid phase flow, which cannot meet the requirements for high-efficiency dehumidification.
The system employs multi-layer inclined perforated thin plates and a spray device, combined with float-controlled valves and a solar solution regeneration system, to increase the gas-liquid contact area, ensure uniform liquid phase flow, improve mass transfer efficiency, and reduce energy consumption by controlling valve opening and closing through differential pressure.
It improves gas-liquid contact efficiency, enhances dehumidification effect, reduces energy consumption and operating costs, and improves the economic efficiency and sustainability of the device.
Smart Images
Figure CN223788303U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of gas treatment devices, specifically a kind of solution dehumidification device. BACKGROUND
[0002] Solution dehumidification devices for gas can be divided into various types according to the contact mode of gas and solution. Generally speaking, traditional dehumidification devices such as packed towers have relatively simple structures, are easy to operate and scale up, and have accumulated rich experience in design and application. Therefore, in actual industrial applications, solution dehumidification devices usually adopt packed tower structures, which are particularly suitable for processing gases with low conventional moisture load.
[0003] However, the packed tower still has some shortcomings. The packed bed structure often limits the effective contact area of gas and solution, resulting in low gas-liquid contact efficiency. In the case of high moisture load and high gas flow rate, the contact time between gas and solution is often too short, and insufficient gas-liquid contact will result in incomplete adsorption or absorption of water vapor in the gas. In addition, uneven liquid flow in traditional devices can also cause the solution in local areas to fail to fully contact with the gas, thereby affecting the overall dehumidification effect. Therefore, in the case of high moisture load or high-efficiency dehumidification, the current packed tower structure cannot fully meet the requirements. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a solution dehumidification device with high gas-liquid contact efficiency, good dehumidification effect, uniform liquid flow, and low energy consumption.
[0005] To solve the above technical problems, the solution dehumidification device of the utility model comprises a tower body, an air inlet valve arranged at the lower part of the tower body, and an air outlet valve arranged at the upper part of the tower body. A plurality of dehumidification modules are arranged inside the tower body between the air inlet valve and the air outlet valve. Each dehumidification module comprises a plurality of inclined perforated sheets for distributing dehumidification solution. Adjacent two dehumidification modules are arranged in an opposite relationship. A spraying device for spraying dehumidification solution into the tower is arranged at the top of the tower body, and a solution pool for storing dehumidification solution is arranged below the bottom of the tower. The solution pool is connected to the spraying device through a pipeline.
[0006] One end of each layer of perforated sheets is connected to the inner wall of the tower body, and the other end is inclined downward to converge at one point and then connected to the opposite inner wall.
[0007] The dehumidification module also includes a liquid receiving plate disposed below the perforated thin plate and a liquid storage tank disposed below the liquid receiving plate; the liquid receiving plate is disposed obliquely downward on the inner wall of the tower body, and a flow groove is opened at its bottom; the liquid storage tank is disposed on the inner wall of the tower body and is in the form of a multi-level stepped structure, with one end of the perforated thin plate of each layer connecting to the inner wall of the tower body and then connecting to the outer edge of each step corresponding to the liquid storage tank.
[0008] The perforated thin plate is three-layered and made of stainless steel with a thickness of 1-2mm, with an angle of 30-60° to the horizontal plane; the liquid receiving plate has an angle of 3-5° to the horizontal plane; the liquid storage tank is in the form of a three-stage stepped structure.
[0009] The bottom of the tower is connected to the solution pool via a connecting pipe with a float ball, which controls the opening and closing of the inlet valve and the outlet valve; a pressure balancing port is provided on the side wall of the solution pool.
[0010] The spraying device and the solution tank are connected by a delivery pipe with a water pump.
[0011] The solution tank is connected to a solution regeneration device via two pipelines, each equipped with an inlet valve and a reflux valve controlled by a float located in the solution tank.
[0012] The advantages of this invention are: the dehumidification module includes multiple layers of perforated sheets with a liquid receiving plate underneath; both the front of the perforated sheets and the area below the liquid receiving plate form gas-liquid contact surfaces, increasing the gas-liquid contact area during the process and improving the mass transfer efficiency between gas and liquid; the perforated sheets are connected to a liquid storage tank, which reduces the impact of liquid flow on the liquid film through overflow, making the liquid phase flow uniform, which is conducive to the formation of a stable and uniform liquid film, increasing the residence time of the liquid, and thus improving the efficiency of the dehumidification module; the opening and closing of the air inlet valve and the air outlet valve are controlled by monitoring the liquid level through differential pressure and a float ball, resulting in a simple structure and flexible control; a solution regeneration system is provided, which uses solar energy to balance the solution concentration, significantly reducing energy consumption and operating costs, while also reducing carbon emissions and thermal pollution, thereby improving the economy and sustainability of the solution dehumidification device. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of the present invention;
[0014] Figure 2 This is a schematic diagram of the dehumidification module of this utility model. Detailed Implementation
[0015] The solution dehumidification device of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0016] like Figure 1As shown, the solution dehumidification device of this utility model includes a tower body 1, an inlet valve 2 located at the lower part of the tower body 1, and an outlet valve 5 located at the upper part of the tower body 1; multiple dehumidification modules are arranged inside the tower body 1 between the inlet valve 2 and the outlet valve 5; a spray device 4 for spraying dehumidification solution into the tower is arranged at the top of the tower; a solution tank 12 for storing dehumidification solution is arranged below the bottom of the tower 9; the spray device 4 and the solution tank 12 are connected by a delivery pipe 14 with a water pump 13; the bottom of the tower 9 and the solution tank 12 are connected by a... The float 10 is connected by a connecting pipe 11, which extends into the solution tank 12 and its end is below the liquid surface. The side wall of the solution tank 12 is provided with a pressure balancing port 3 for balancing the pressure inside and outside the tank. The float 10 controls the opening and closing of the air inlet valve 2 and the air outlet valve 5 according to the pressure difference between the inside of the tower and the tank. The solution tank 12 is also connected to a solar solution regeneration device 16 through two pipes provided on the side wall and bottom. The two pipes are respectively provided with an inlet valve and a return valve, which are controlled by the float 15 located in the solution tank 12.
[0017] like Figure 2 As shown, the dehumidification module includes an upper dehumidification module, multiple middle dehumidification modules, and a lower dehumidification module. Adjacent dehumidification modules are arranged opposite each other. In this embodiment, there is one middle dehumidification module, but in actual use, multiple modules can be combined according to requirements. The basic dehumidification module consists of multiple layers of inclined perforated thin plates 6 for distributing the dehumidification solution. The perforated thin plates 6 are used to allow the solution to stagnate as much as possible on their surface and in the pores, thereby adsorbing more water vapor from the gas to be treated. Each layer of perforated thin plates 6 is connected at one end to the inner wall of the tower body 1, and at the other end... The solutions converge at a point and are then connected to the inner wall on the opposite side. The standard dehumidification module also includes a receiving plate 7 located below the perforated thin plate 6 and a storage tank 8 located below the receiving plate 7. The receiving plate 7 is set at a downward angle on the inner wall of the tower body 1, and its bottom has a flow channel 17 for the upper layer solution to flow to the lower layer. The storage tank 8 is set on the inner wall of the tower body 1 and is in a multi-level stepped shape. It is used to collect the solution and make it flow downward in a slow overflow manner. One end of each perforated thin plate 6 is connected to the inner wall of the tower body 1 and then connected to the outer edge of each step corresponding to the storage tank 8.
[0018] In this embodiment, the perforated thin plate 6 is a three-layered stainless steel with a thickness of 1-2mm and an angle of 30-60° with the horizontal plane. The liquid receiving plate 7 has an angle of 3-5° with the horizontal plane, and the liquid storage tank 8 is in the form of a three-tiered step. The upper dehumidification module does not have a liquid storage tank 8, and multiple perforated thin plates 6 are directly connected to the inner wall of the tower body 1. The middle dehumidification module is a standard dehumidification module with a liquid receiving plate 7 and a liquid storage tank 8. The lower dehumidification module does not have a liquid receiving plate 7, but directly uses the bottom of the tower 9 as the liquid receiving plate 7.
[0019] like Figure 1As shown, solid arrows represent liquid flow direction, and dashed arrows represent gas flow direction. In operation, the solution in solution tank 12 is pumped to the top of the tower via delivery pipe 14 by water pump 13. Spray device 4 evenly sprays the solution onto the perforated thin plate 6 of the upper dehumidification module. A small portion of the solution falls onto the receiving plate 7, while most of the solution flows along the perforated thin plate 6. After converging, the two flows through the flow channel 17 on the receiving plate 7 into the outer storage tank 8 of the middle dehumidification module. When the outer storage tank 8 is full, the solution overflows to the upper perforated thin plate 6, and excess solution enters the middle storage tank 8. When the middle storage tank 8 is full, the solution flows to the middle perforated thin plate 6 and the inner storage tank 8. When the inner storage tank 8 is full, the solution flows to the lower perforated thin plate 6 and the receiving plate 7, converging and flowing through the flow channel 17 into the outer storage tank 8 of the next dehumidification module, until reaching the bottom dehumidification module. After flowing in the same manner, the solution eventually reaches the bottom of the tower 9 and returns to the solution pool 12 through the connecting pipe 11.
[0020] The gas to be treated enters through the inlet valve 2, passes through the pores of the perforated thin plate 6 of the lower dehumidification module and comes into full contact with the liquid film thereon, then bypasses the liquid receiving plate 7 and enters the upper dehumidification module. After undergoing multiple dehumidification processes, it reaches the top of the tower and is finally discharged outside the tower through the outlet valve 5. When the humidity of the air inside the tower decreases, the air pressure inside the tower decreases because the water vapor in the air is carried away by the solution. Since the solution pool 12 has a pressure balance port 3, the air pressure inside it is the same as the outside pressure. The pressure difference causes the liquid level in the connecting pipe 11 to rise, and the float ball 10 also rises accordingly. When the float ball 10 rises to the set position, that is, when the humidity of the air inside the tower drops to the set requirement, it controls the outlet valve 5 to open. After the dehumidified gas is discharged, the outlet valve 5 closes, the inlet valve 2 opens, and new humid air enters the tower. After the float ball 10 returns to its original position, the inlet valve 2 closes, and the device starts a new round of dehumidification operation.
[0021] As the dehumidification process proceeds, the concentrated solution is gradually diluted. When the solution absorbs a certain amount of water vapor, the liquid level in the solution tank 12 rises, and the float ball 15 floats to the set position, opening the inlet valve between the solution tank 12 and the solution regeneration device 16. The diluted solution enters the solar solution regeneration device 16 for solution dehumidification. Subsequently, the inlet valve closes, the return valve opens, and the regenerated concentrated solution returns to the solution tank 12, and the dehumidification device continues to operate.
[0022] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A solution dehumidification device, characterized in that: The tower includes a tower body (1), an air inlet valve (2) located at the lower part of the tower body (1), and an air outlet valve (5) located at the upper part of the tower body (1). Multiple dehumidification modules are arranged between the air inlet valve (2) and the air outlet valve (5) inside the tower body (1). Each dehumidification module includes a multi-layer inclined perforated thin plate (6) for distributing dehumidification solution. Two adjacent dehumidification modules are arranged in a relative relationship. A spray device (4) for spraying dehumidification solution into the tower is provided at the top of the tower body (1). A solution pool (12) for storing dehumidification solution is provided below the bottom of the tower (9). The solution pool (12) is connected to the spray device (4) through a pipeline.
2. The solution dehumidification device according to claim 1, characterized in that: One end of each layer of the perforated thin plate (6) is connected to the inner wall of the tower body (1), and the other end is obliquely downward and then connected to the inner wall on the opposite side.
3. The solution dehumidification device according to claim 2, characterized in that: The dehumidification module also includes a liquid receiving plate (7) disposed below the perforated thin plate (6) and a liquid storage tank (8) disposed below the liquid receiving plate (7); the liquid receiving plate (7) is disposed obliquely downward on the inner wall of the tower body (1), and a flow groove (17) is opened at its bottom; the liquid storage tank (8) is disposed on the inner wall of the tower body (1) and is in the form of a multi-level stepped structure, and one end of the perforated thin plate (6) of each layer is connected to the inner wall of the tower body (1) and then connected to the outer edge of each step corresponding to the liquid storage tank (8).
4. The solution dehumidification device according to claim 3, characterized in that: The perforated thin plate (6) is three-layered and made of stainless steel with a thickness of 1-2 mm. Its angle with the horizontal plane is 30-60°. The liquid receiving plate (7) has an angle of 3-5° with the horizontal plane. The liquid storage tank (8) is in the shape of a three-stage step.
5. The solution dehumidification device according to any one of claims 1-4, characterized in that: The bottom of the tower (9) is connected to the solution pool (12) by a connecting pipe (11) with a float (10). The float (10) controls the opening and closing of the air inlet valve (2) and the air outlet valve (5). A pressure balance port (3) is provided on the side wall of the solution pool (12).
6. The solution dehumidification device according to any one of claims 1-4, characterized in that: The spray device (4) and the solution pool (12) are connected by a delivery pipe (14) with a water pump (13).
7. The solution dehumidification device according to any one of claims 1-4, characterized in that: The solution tank (12) is connected to a solution regeneration device (16) via two pipelines. The two pipelines are respectively equipped with an inlet valve and a return valve controlled by a float ball (15) located in the solution tank (12).