Decarburization tower

Abstract

The decarburization tower comprises a water inlet and air outlet area, a filler area and a water outlet area which are sequentially distributed from top to bottom, a water outlet is formed in the side wall of the decarburization tower and located on the lower portion of the water outlet area, a flow blocking cover is arranged in the water outlet area, openings are formed in the bottom face and one side face of the flow blocking cover, and the opening in the side face corresponds to the water outlet. During use, effluent of the decarburization tower is discharged from the water outlet through the bottom opening of the flow blocking cover and the side opening of the flow blocking cover. By adopting the decarburization tower structure, the liquid level of the water outlet area can be stabilized, and the water inlet risk of the air blower is reduced.

Description

Technical Field

[0001] The utility model relates to the field of water treatment, and particularly to a new decarbonization tower. Background Technique

[0002] A decarbonization tower, also known as a carbon dioxide remover, is a carbon dioxide removal equipment used to remove carbon dioxide gas in water to improve the water quality of the effluent of a water treatment system. There are two main categories of commonly used decarbonization towers: a blast-filling type decarbonization tower and a vacuum type decarbonization tower.

[0003] The blast-filling type decarbonization tower is a tower-shaped cylindrical device. The tower body is generally made of metal and has rust removal or anti-corrosion measures on the inner surface. It can be divided into three areas inside. The upper part is used for water distribution / ventilation; the middle part is the packing area, and the packing is mostly Raschig rings or polypropylene multi-faceted hollow balls; the lower part is the water outlet area, and air is also sent into the decarbonization tower by a blower through this area. There is a water outlet pipe and a water seal measure at the lower part of the water outlet area.

[0004] During use, the raw water enters from the water distribution device in the water distribution area at the top of the decarbonization tower and contacts the air from the lower blower in the middle packing area. Under the action of the packing, the raw water is dispersed into many small streams or droplets, and the carbon dioxide in the water is quickly carried away by the upward flowing air and discharged from the ventilation pipe at the top of the water distribution area (reference can be made to the design of a carbon dioxide removal device disclosed in CN205472743U). The treated water is discharged into the pool directly below the decarbonization tower through the drain pipe in the water outlet area and passes through the water seal device.

[0005] A slope inclined towards the central hole is usually provided at the bottom of the water outlet area of the decarbonization tower (reference can be made to the bottom cover 3 disclosed in CN206417885U). The central hole is connected to a U-shaped elbow, and the combination of this U-shaped elbow and the bottom slope constitutes the water seal device of the decarbonization tower. Its function is to prevent air short-circuiting, so that all the air sent by the blower enters the packing area to obtain the maximum carbon dioxide removal rate.

[0006] In the above treatment process, a larger curvature will cause the water outlet position of the U-shaped elbow to be relatively high, which is not conducive to water discharge. Therefore, the curvature of the U-shaped elbow is generally relatively small, which causes the outlet of the water seal device to be immersed in water to be fully effective. This will cause several problems:

[0007] 1. The water in the U-shaped elbow is still under the pressure of the water in the pool, and the liquid level in the pool fluctuates. When the liquid level in the pool exceeds the designed liquid level and continues to rise far beyond the designed liquid level, in order to discharge the water in the U-shaped elbow into the pool, the pressure in the water outlet area will increase, resulting in an increase in the liquid level in the decarbonization tower. After the liquid level in the decarbonization tower increases to a certain extent, the treated water may be backfilled into the blower through the air duct, which may cause damage to the blower.

[0008] 2. The water flow velocity from the water outlet area to the water seal pipe is uneven and is affected by the liquid level of the lower pool. When the liquid level of the pool does not reach the designed water level, the water flow velocity is too fast, and the bottom cannot effectively block the air circulation, which will cause the water seal to fail and a large amount of air to be lost.

[0009] Therefore, an improved decarbonization tower water outlet structure needs to be provided. Summary of the Invention

[0010] The purpose of the present utility model is to solve the above-mentioned technical problems existing in the prior art. The present utility model provides a decarbonization tower, which includes an inlet and air outlet area, a packing area, and a water outlet area distributed in sequence from top to bottom. The side wall of the decarbonization tower is provided with a water outlet, and the water outlet is located at the lower part of the water outlet area. A baffle is arranged in the water outlet area. The bottom surface and one side surface of the baffle are both provided with openings, and the side opening corresponds to the water outlet. When in use, the water discharged from the decarbonization tower passes through the bottom opening of the baffle and is discharged from the water outlet through the side opening of the baffle.

[0011] In the decarbonization tower structure of the present utility model, the function of the water outlet on the side wall of the decarbonization tower is to guide the water discharged from the decarbonization tower to flow out and stabilize the liquid level of the water outlet area. The function of the baffle is to stabilize the water flow velocity. The water level of the water outlet at least submerges the bottom surface of the baffle. When the water flow velocity of the decarbonization tower is stable, the baffle and the water outlet are submerged to achieve the water seal effect. Compared with the decarbonization tower that forms a water seal by using a U-shaped bend in the prior art, the tower height can be reduced and the manufacturing cost can be reduced.

[0012] Preferably, the bottom of the baffle is located between the bottom of the water outlet and the bottom of the water outlet area.

[0013] Preferably, the water outlet is circular. Based on the bottom of the water outlet area, the height of the center of the water outlet from the bottom of the water outlet area is more than 1.5 times and less than 2 times the diameter of the water outlet. Preferably, the diameter of the water outlet is set so that the flow velocity at the water outlet is more than 0.35 m / s and less than 0.5 m / s.

[0014] Preferably, the baffle completely blocks the water outlet.

[0015] Preferably, the baffle is formed by enclosing a cube with 4 steel plates. The 4 steel plates respectively form an upper baffle plate located directly above the water outlet, left and right baffle plates located on both sides of the water outlet, and a main baffle plate opposite to the water outlet. The bottom surface of the baffle and the side surface adjacent to the water outlet are not provided with steel plates.

[0016] Preferably, the minimum distance between the left and right baffle plates and the edge of the water outlet in the horizontal direction is more than 50 mm and less than 200 mm.

[0017] Preferably, the distance between the main baffle plate and the tower wall on one side of the water outlet is equal to the diameter of the water outlet.

[0018] Preferably, an air outlet of a blower is further provided on the side wall of the decarbonization tower. The air outlet of the blower is arranged opposite to the water outlet, and during use, the air outlet of the blower is above the water outlet level of the decarbonization tower.

[0019] Preferably, the baffle cover is made of stainless steel with a protective layer. Among them, the protective layer can be a corrosion-resistant material common in the field such as epoxy resin and natural rubber, and can be selected according to the actual use scenario as long as the corrosion-resistant effect (especially the corrosion-resistant effect under acidic conditions) can be achieved.

[0020] Preferably, an extension pipe is provided outside the water outlet, and the erection slope i of the extension pipe ≥ 0.03.

[0021] The solution of the present utility model realizes complete gravity outflow by replacing the bottom water outlet with the water outlet on the side of the decarbonization tower. The water flow in the water outlet area is no longer affected by the water pressure from the water in the pool, and the water flows out in a non-resistant flow state on the side, which can stabilize the liquid level in the water outlet area and reduce the risk of blower water intake. Description of the Drawings

[0022] Figure 1 Shows a schematic structural view of the water outlet area of the decarbonization tower in the present utility model. Detailed Embodiments

[0023] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without these details. In addition, in order to avoid confusion or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the drawings.

[0028] According to an embodiment of the present utility model, referring to Figure 1 , the decarbonization tower includes a water inlet and air outlet area (not shown), a packing area, and a water outlet area, which are distributed in sequence from top to bottom. Similar to the prior art, when the decarbonization tower of the present utility model is in use, the raw water containing carbon dioxide enters from the water distribution device in the water inlet and air outlet area at the top of the decarbonization tower. The water distribution device is usually a spraying device, and the raw water enters the packing area after being sprayed. In this embodiment, the packing is a polypropylene plastic cascade ring with a size of 50mm * 30mm * 1.5mm, and the packing is randomly stacked. Of course, in other embodiments of the present utility model, the packing can also be Raschig rings, Pall rings, etc., and can also be made of polyvinyl chloride, propylene carbonate, etc. After the raw water enters the packing area, it is dispersed into small streams by the packing particles. In the decarbonization tower of the present utility model, a side water outlet is provided on the side wall of the decarbonization tower. The side water outlet is located at the lower part of the water outlet area. A blower air outlet is also provided on the side wall of the decarbonization tower. The blower air outlet is arranged opposite to the side water outlet. Air enters the decarbonization tower from the blower outlet on the side wall of the lower water outlet area, travels upward to the packing area, and takes away the carbon dioxide contained in the raw water in the packing, thereby achieving the purpose of decarbonization. The treated water descends to the water outlet area.

[0029] As Figure 1As shown in the figure, a baffle cover (baffle plate assembly) is provided in the water outlet area. Openings are provided on the bottom surface and one side surface of the baffle cover, and the side opening corresponds to the side water outlet. Vertically, the bottom of the baffle cover is located between the bottom of the side water outlet and the bottom of the water outlet area. The side water outlet is circular with a diameter of 100 mm. The height from the center of the side water outlet to the bottom of the water outlet area is 170 mm. Viewed from the position directly opposite the side water outlet, the baffle cover of this embodiment is formed by enclosing a cube with 4 steel plates. The 4 steel plates respectively form an upper baffle plate located directly above the water outlet, left and right baffle plates located on both sides of the water outlet, and a main baffle plate opposite the water outlet for covering the front area of the side water outlet. The distance between the main baffle plate and the tower wall on one side of the water outlet is equal to the diameter of the water outlet. The minimum distance between the left and right baffle plates and the edge of the water outlet in the horizontal direction is 50 mm. The heights of the main baffle plate and the left and right baffle plates in the vertical direction are 120 mm, which can completely cover the water outlet. In this embodiment, the cube baffle cover is welded by stainless steel, and the surface of the stainless steel is coated with natural rubber.

[0030] During use, the decarbonized tower water accumulates at the bottom of the water outlet area. When the water level in the water outlet area rises to submerge the bottom surface of the baffle cover, it can play a role in water sealing, ensuring that the air entering the decarbonized tower from the blower will not escape from the side water outlet and guaranteeing the decarbonization efficiency. When the water flow rate of the decarbonized tower is stable, the baffle cover and the side water outlet are submerged, and the water level in the water outlet area is stable below the air outlet of the blower. At this time, the water flow rate of the circular side water outlet in this embodiment is between 0.4 and 0.5 m / s.

[0031] In addition, an extension pipe (not shown) is provided outside the side water outlet of the decarbonized tower in this embodiment, and the erection slope i of the extension pipe is 0.035. A pipe mixer can also be added to the extension pipe to replace the pH adjustment process in the subsequent process section. At the same time, a valve can be installed outside the side water outlet to adjust the water flow rate when the decarbonized tower is started.

[0032] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A decarbonization tower, comprising a water inlet and air outlet area, a filler area and a water outlet area which are sequentially distributed from top to bottom, characterized in that: A water outlet is provided on the side wall of the decarbonization tower, and the water outlet is located in the lower part of the water outlet area. A flow baffle is provided in the water outlet area, and openings are provided on the bottom and one side of the flow baffle, wherein the side opening corresponds to the water outlet. When in use, the water outlet of the decarbonization tower is discharged from the water outlet through the bottom opening of the flow baffle and the side opening of the flow baffle.

2. The decarbonization tower according to claim 1, characterized in that The bottom of the baffle cover is located between the bottom of the water outlet and the bottom of the water outlet area.

3. The decarbonization tower according to claim 1 or 2, characterized in that: The water outlet is circular, and with the bottom of the water outlet area as a reference, the height of the center of the water outlet from the bottom of the water outlet area is greater than 1.5 times and less than 2 times the diameter of the water outlet; and / or the diameter of the water outlet is set so that the flow velocity at the water outlet is greater than 0.35 m / s and less than 0.5 m / s.

4. The decarbonization tower according to claim 1 or 2, characterized in that: The baffle completely covers the water outlet.

5. The decarbonization tower according to claim 1 or 2, characterized in that: The baffle cover is formed into a cubic shape by four steel plates, and the four steel plates respectively form an upper baffle plate located directly above the water outlet, a left baffle plate and a right baffle plate located on both sides of the water outlet, and a main baffle plate opposite to the water outlet. No steel plates are provided on the bottom surface of the baffle cover and a side surface adjacent to the water outlet.

6. The decarbonization tower according to claim 5, characterized in that The minimum distance between the left baffle plate and the right baffle plate and the edge of the water outlet in the horizontal direction is more than 50 mm and less than 200 mm.

7. The decarbonization tower according to claim 5, characterized in that The distance between the main baffle plate and the tower wall on one side of the water outlet is equal to the diameter of the water outlet.

8. The decarbonization tower according to claim 1 or 2, characterized in that: The side wall of the decarbonization tower is also provided with a blower air outlet, the blower air outlet is arranged opposite to the water outlet, and the blower air outlet is located above the outlet water level of the decarbonization tower.

9. The decarbonization tower according to claim 1 or 2, characterized in that: The deflector cover is made of stainless steel with a protective layer.

10. The decarbonization tower according to claim 1 or 2, characterized in that: An extension pipe is arranged outside the water outlet, and the installation slope of the extension pipe is i≥0.03.

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