Absorption tower

Abstract

The utility model relates to gas treatment auxiliary equipment, and provides an absorption tower, which comprises a first tower body, a spraying part and a tray are arranged in the first tower body, the spraying part is positioned below the tray, the spraying part comprises a plurality of spray heads, a plurality of nozzles are arranged on each spray head, so that liquid can be uniformly sprayed in multiple directions, and the liquid sprayed by the nozzles can be uniformly sprayed in multiple directions. The gas treatment efficiency can be improved, meanwhile, deposition of attachments on the tray, the tower wall and other parts in the tower can be effectively removed, the phenomenon that the attachments fall off after scaling and damage components in the absorption tower is avoided, operation of equipment is guaranteed, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to gas processing auxiliary equipment, and specifically provides an absorption tower. Background Art

[0002] Limestone-gypsum wet desulfurization is required in the operation of coal-fired power units. However, in the current production process, most of the desulfurization processes use a single-tower double-circulation process, and the equipment uses a primary absorption tower.

[0003] In existing primary absorption towers, the spray layer is designed with multiple layers of single-downward, single-jet silicon carbide nozzles, or with a lower layer of bidirectional silicon carbide nozzles and an upper layer of downward, single-jet silicon carbide nozzles. During use, gypsum scale forms on the absorber's spray layer, the lower portion of the collection bowl, and the inner surface of the circumferential tower wall. The scale layer is approximately 6 cm thick, and in severe cases, can reach over 15 cm. If this scale layer breaks off during operation, it can cause serious consequences such as breakage of the spray beam branch pipes and nozzles, impact on the lower agitator blades, breakage of the absorption tower oxidation lance, and blockage of the circulating pump inlet filter. Furthermore, during unit shutdown and maintenance, the accidental fall of this scale layer can cause a sudden and severe blow to workers below, endangering their lives. Furthermore, the high position of the scale layer on the spray beam, tray, and tower wall makes cleaning difficult and expensive. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the utility model provides an absorption tower, which can prevent scaling of a tray, a tower wall and other components in the tower, thereby helping to ensure the operating efficiency of the absorption tower and reducing maintenance costs.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an absorption tower, including a first tower body, in which a spray component and a tray are provided. The spray component is located below the tray. The spray component includes multiple nozzles, and a single nozzle is provided with multiple nozzles so as to be able to evenly spray liquid in multiple directions.

[0006] Preferably, the first tower body further comprises a liquid pool, an air inlet and an air outlet, the air inlet is located above the liquid level line of the liquid pool, the liquid pool is located at the lower part of the first tower body, and the air outlet is located at the upper part of the first tower body.

[0007] Further preferably, the spray component further includes a circulation pump arranged in the liquid pool and a first pipe connected to the circulation pump, and a spray head is installed on the portion of the first pipe located in the first tower body.

[0008] More preferably, the nozzles are arranged at even intervals and / or along the circumference of the first pipe.

[0009] More preferably, the nozzle further comprises a base and a ball portion, the nozzle is arranged on the ball portion, and the base is connected to the first pipe member.

[0010] Preferably, the diameter of the nozzle decreases in a direction away from the surface of the bulb.

[0011] Preferably, an agitator is further provided in the liquid pool.

[0012] Preferably, the second tower body is connected to the first tower body through a second pipe body so as to be suitable for injecting liquid into the tray, and the tray is communicated with the second tower body so as to be suitable for the liquid in the tray to flow back into the second tower body.

[0013] Preferably, the tray is in a trumpet-shaped structure that opens upward.

[0014] Preferably, a tube bundle dust removal and demisting mechanism is installed on the top of the first tower body, and the tube bundle dust removal and demisting mechanism is connected to the air outlet.

[0015] Through the above technical solution, the utility model provides an absorption tower, including a first tower body, wherein a spray component and a tray are provided in the first tower body, the spray component is located below the tray, the spray component includes multiple nozzles, and a single nozzle is provided with multiple nozzles so as to be able to evenly spray liquid in multiple directions. The liquid sprayed from the nozzle can improve the efficiency of gas treatment, and at the same time can effectively remove the deposition of attachments on the tray, tower wall and other parts of the tower, to prevent the scaling and falling off to damage the various components in the absorption tower, which is beneficial to ensure the operation of the equipment and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the feeding device disclosed in the embodiment of the utility model;

[0018] Figure 2 It is a partial structural diagram of the feeding device disclosed in the embodiment of the utility model.

[0019] Description of Reference Numerals

[0020] 1. First tower body; 2. Second tower body; 3. Liquid pool; 4. Spraying component; 401. First pipe; 5. Nozzle; 501. Base; 502. Nozzle; 503. Ball; 6. Air outlet; 7. Tray; 8. Air inlet; 9. Second pipe body. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions within the scope of the claims.

[0022] The present invention provides these embodiments to make the present invention thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangements of parts and steps, material components, numerical expressions and numerical values ​​described in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] It should be noted that, in the description of this utility model, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] In addition, the terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means that the positions are within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means that the positions are within the tolerance range. "Include" or "comprising" and similar terms mean that the elements listed before the word include the elements listed after the word, and do not exclude the possibility that other elements may also be included.

[0025] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0026] All terms used in this utility model have the same meaning as those understood by ordinary technicians in the field to which this utility model belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] See also Figure 1 and Figure 2 The utility model provides an absorption tower, including a first tower body 1, in which a spray component 4 and a tray 7 are provided. The spray component 4 is located below the tray 7. The spray component 4 includes multiple nozzles 5. A single nozzle 5 is provided with multiple nozzles 502 so as to be able to evenly spray liquid in multiple directions. The spray component 4 is installed inside the first tower body 1 and evenly disperses the treatment liquid, such as limestone slurry, into fine droplets through the nozzles 502. This increases the contact area between the liquid and the gas, thereby improving the absorption efficiency of pollutants. The nozzle head 5 has multiple nozzles 502, ensuring that the liquid covers a larger area and can be sprayed from multiple angles, making the liquid distribution more uniform. The multi-directional spraying helps to keep the components of the first tower body 1 clean. The liquid not only treats pollutants in the gas but also washes away sediment attached to the surface of the first tower body 1, such as the tray and the tower wall, preventing these sediments from scaling and eventually falling off and damaging the absorption tower. The tray 7 is located above the spray component 4. Its function is to provide a platform, allowing the gas to have more opportunities to contact the liquid during its rise. In addition, the tray 7 can also collect liquid falling from the spray component 4, preventing insufficiently dispersed droplets from falling directly to the bottom of the tower and reducing treatment efficiency. This equipment not only improves the efficiency of gas treatment, but also reduces the maintenance frequency caused by equipment scaling, thereby reducing overall operating costs.

[0029] In some embodiments, the first tower body 1 also includes a liquid pool 3, an air inlet 8 and an air outlet 6. The air inlet 8 is located above the liquid level line of the liquid pool 3. The liquid pool 3 is located at the lower part of the first tower body 1. The air outlet 6 is located at the upper part of the first tower body 1. The liquid pool 3 is located at the lower part of the first tower body 1 and is mainly used to store treatment liquid. The liquid in the liquid pool 3 is sent to the spraying component 4 through a circulation pump. The air inlet 8 is set at a position above the liquid level line of the liquid pool 3. In order to ensure that the gas entering the first tower body 1 does not directly enter the liquid pool, the gas contacts the sprayed liquid to achieve effective mixing of the gas and liquid phases, which is beneficial to avoid the liquid from flowing back into the air inlet pipe. The air outlet 6 is located at the upper part of the first tower body 1 to ensure that the gas to be treated can be in contact with the treatment liquid in the tower for as long as possible, thereby achieving the best purification effect. The purified gas is discharged from the air outlet 6 and flows to subsequent treatment links or is directly discharged into the atmosphere.

[0030] In some embodiments, the spray component 4 also includes a circulation pump arranged in the liquid pool 3 and a first pipe fitting 401 connected to the circulation pump. The part of the first pipe fitting 401 located in the first tower body 1 is equipped with a nozzle 5. The circulation pump is arranged in the liquid pool 3, extracts the treatment liquid from the liquid pool, and transports the treatment liquid to the nozzle 5 through the first pipe fitting 401, ensuring that the treatment liquid can be continuously sprayed out and fully contacted with the gas entering the first tower body 1. The first pipe fitting 401 is connected to the circulation pump and is responsible for transporting the treatment liquid from the circulation pump to the nozzle 5 in the tower. The first pipe fitting 401 has corrosion resistance and strength to adapt to different types of treatment liquids and must be able to withstand the pressure of the pump. The nozzle 5 is installed on the first pipe fitting 401. The nozzle 5 enables the liquid to be sprayed evenly to form fine droplets, increase the gas-liquid contact area, and thus improve the absorption efficiency of pollutants.

[0031] The first tower body 1 operates as follows: contaminant-laden gas enters the first tower body 1 through the air inlet 8. As the gas rises, it comes into contact with the treatment liquid sprayed by the nozzle 5, absorbing the contaminants. The cleaned gas continues to rise, reacting with the treatment liquid in the tray 7 before being discharged through the air outlet 6 of the first tower body 1. The liquid flows into the liquid pool 3 at the bottom of the tower, where it is pumped by a circulating pump to the nozzle 5 for further spraying.

[0032] In some embodiments, the nozzles 5 are evenly spaced and / or arranged along the circumference of the first pipe 401. When the nozzles are evenly spaced along the length of the first pipe 401, the liquid can be evenly distributed across the entire tower cross-section, avoiding excessive liquid in some areas and too little in others, thereby improving the uniformity and efficiency of gas treatment. The evenly spaced arrangement also helps reduce the risk of localized fouling, as the nozzles can more evenly cover the space within the tower, reducing dead corners. The nozzles 5 are arranged not only along the length of the first pipe 401 but also around its circumference, thereby increasing the contact area between the liquid and the gas. This helps improve the absorption efficiency of pollutants and facilitates the removal of deposits on the tower walls, preventing scaling.

[0033] In some embodiments, the nozzle 5 also includes a base 501 and a ball 503, the nozzle 502 is arranged on the ball 503, and the base 501 is connected to the first pipe 401. The base 501 is the basic part of the nozzle 5, and the ball 503 is fixed on the first pipe 401. The base 501 not only firmly connects the ball 503 and the first pipe 401, but also ensures that the liquid can flow smoothly from the first pipe 401 into the ball 503. The ball 503 is provided with multiple nozzles 502, which is conducive to better covering various areas of the first tower body 1. In addition, the ball 503 and the base 501 have rotational freedom, so that the nozzle 5 can adjust the spray direction according to actual needs, which can increase the contact time with the gas, thereby improving the absorption efficiency.

[0034] In some embodiments, the diameter of the nozzle 502 decreases in the direction away from the surface of the spherical portion 503. When the liquid passes through the nozzle 502 with a gradually decreasing diameter, the speed of the liquid in the narrow place will increase, and the liquid sprayed from the nozzle 502 will have a higher speed and be able to spread farther. At the same time, the high-speed sprayed liquid can better flush the surface of the first tower body 1 to prevent the deposition and scaling of attachments. As the diameter of the nozzle 502 decreases, the liquid will be subjected to stronger shear force when passing through the nozzle 502, and the liquid will be more easily broken up into fine droplets, which helps to produce a better atomization effect, increases the contact area between the liquid and the gas, and helps to improve the absorption efficiency of pollutants.

[0035] In some embodiments, an agitator is also provided in the liquid pool 3. The agitator can ensure that the treatment liquid in the liquid pool 3 is evenly mixed to avoid a decrease in treatment efficiency due to local concentration differences. The treatment process involves exothermic or endothermic reactions. The agitator can help the liquid to better exchange heat and maintain the uniformity of the temperature of the treatment liquid, thereby helping to control the reaction conditions.

[0036] In some embodiments, the second tower body 2 is connected to the first tower body 1 via a second tube 9, suitable for injecting liquid into the tray 7. The tray 7 is connected to the second tower body 2 to allow the liquid in the tray 7 to flow back into the second tower body 2. The second tube 9 transports the liquid from the second tower body 2 to the tray 7 in the first tower body 1, ensuring that the liquid can be accurately injected into the tray, thereby achieving more effective gas-liquid contact. The connection between the tray 7 and the second tower body 2 allows the liquid in the tray 7 to flow back into the second tower body 2. The flow and backflow of liquid in the tray 7 removes sediment on the tray surface, helping to inhibit scaling in the tray 7, thereby extending the service life of the equipment. In addition, the return line from the tray 7 to the second tower body 2 can be cut off or the flow rate of the second tube 9 is greater than the flow rate back to the second tower body 2 to achieve the addition of liquid to the liquid pool 3.

[0037] In some embodiments, the tray 7 has an upward-opening trumpet-shaped structure. When the gas rises, the gas flow rate will be relatively slowed down through the gradually expanding part of the trumpet-shaped tray, thereby increasing the gas-liquid contact time and helping to improve the absorption efficiency of pollutants. When the required liquid capacity is the same, the port cross-sectional area of ​​the tray 7 is larger.

[0038] In some embodiments, a tube bundle type dust removal and demisting mechanism is installed on the top of the first tower body 1, and the tube bundle type dust removal and demisting mechanism is connected to the air outlet 6. The tube bundle type dust removal and demisting mechanism is composed of a series of parallel arranged tube bundles. These tube bundles can capture and remove tiny particles in the gas. When the gas passes through these tube bundles, the particles will be intercepted, thereby reducing the dust content in the exhaust gas.

[0039] In order to better understand the content of the present invention, the following description is given in conjunction with relatively preferred technical features.

[0040] The utility model provides an absorption tower, including a first tower body 1 and a second tower body 2. A spray component 4 and a tray 7 are provided in the first tower body 1. The spray component 4 is located below the tray 7. The spray component 4 includes multiple nozzles 5. A single nozzle 5 is provided with multiple nozzles 502 to spray liquid evenly in multiple directions. The first tower body 1 also includes a liquid pool 3, an air inlet 8 and an air outlet 6. The air inlet 8 is located above the liquid level line of the liquid pool 3. The liquid pool 3 is located at the lower part of the first tower body 1. The air outlet 6 is located at the upper part of the first tower body 1. The second tower body 2 is connected to the first tower body 1 through a second pipe body 9 to be suitable for injecting liquid into the tray 7. The tray 7 is communicated with the second tower body 2 to be suitable for the liquid in the tray 7 to flow back into the second tower body 2. The disk 7 is a trumpet-shaped structure that opens upward. A tube bundle dust removal and demisting mechanism is installed on the top of the first tower body 1, and the tube bundle dust removal and demisting mechanism is connected to the air outlet 6. The spray component 4 also includes a circulation pump arranged in the liquid pool 3 and a first pipe fitting 401 connected to the circulation pump. The part of the first pipe fitting 401 located in the first tower body 1 is equipped with a nozzle 5. The nozzles 5 are evenly spaced and arranged along the circumference of the first pipe fitting 401. The nozzle 5 also includes a base 501 and a ball portion 503. The nozzle 502 is arranged on the ball portion 503. The base 501 is connected to the first pipe fitting 401. The diameter of the nozzle 502 decreases in the direction away from the surface of the ball portion 503. The diameter of the nozzle 502 decreases in the direction away from the surface of the ball portion 503.

[0041] The operation process of the absorption tower of the present application is as follows: gas enters the first tower body 1 from the air inlet 8, and the circulation pump extracts the treatment liquid from the liquid pool 3, transports it to the nozzle 5 in the tower through the first pipe 401, and is sprayed out from the nozzle 502 to form fine droplets, which mix with the gas to react and clean the inside of the first tower body 1 to prevent the deposition of attachments. The second tower body 2 injects treatment liquid into the tray 7, and the rising gas reacts with the treatment liquid on the liquid surface of the tray 7. The flow rate of the second tube body 9 is controlled to make the liquid in the tray 7 overflow, and the treatment liquid is added to the liquid pool 3. At the same time, the treatment liquid in the tray 7 flows back to the second tower body 2 at a flow rate less than that supplied by the second tube body 9. The gas is then discharged from the air outlet through the tube bundle dust and mist removal mechanism, thereby effectively removing attachments on the tray 7, the tower wall and other parts of the tower to prevent them from falling off after scaling and damaging the components in the absorption tower, which is conducive to ensuring normal operation time, improving gas processing efficiency and reducing maintenance costs.

[0042] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein.

[0043] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts.

Claims

1. An absorption tower, characterized in that: The invention comprises a first tower body (1), wherein a spray component (4) and a tray (7) are provided in the first tower body (1), wherein the spray component (4) is located below the tray (7), and the spray component (4) comprises a plurality of spray heads (5), wherein a single spray head (5) is provided with a plurality of nozzles (502) so as to be able to spray liquid uniformly in multiple directions.

2. The absorption tower according to claim 1, characterized in that The first tower body (1) further comprises a liquid pool (3), an air inlet (8) and an air outlet (6), wherein the air inlet (8) is located above the liquid level line of the liquid pool (3), the liquid pool (3) is located at the lower part of the first tower body (1), and the air outlet (6) is located at the upper part of the first tower body (1).

3. The absorption tower according to claim 2, characterized in that The spraying component (4) further comprises a circulation pump arranged in the liquid pool (3) and a first pipe (401) connected to the circulation pump, wherein the portion of the first pipe (401) located in the first tower body (1) is equipped with the spray head (5).

4. The absorption tower according to claim 3, characterized in that The nozzles (5) are arranged at even intervals and / or along the circumference of the first pipe (401).

5. The absorption tower according to claim 3, characterized in that The nozzle (5) further comprises a base (501) and a ball portion (503), the nozzle (502) is arranged on the ball portion (503), and the base (501) is connected to the first pipe (401).

6. The absorption tower according to claim 5, characterized in that The diameter of the nozzle (502) decreases in a direction away from the surface of the ball portion (503).

7. The absorption tower according to claim 5, characterized in that The diameter of the nozzle (502) decreases in a direction away from the surface of the ball portion (503).

8. The absorption tower according to any one of claims 1 to 7, characterized in that The invention also comprises a second tower body (2), wherein the second tower body (2) is connected to the first tower body (1) via a second tube body (9) so as to be suitable for injecting liquid into the tray (7), and the tray (7) is communicated with the second tower body (2) so as to be suitable for the liquid in the tray (7) to flow back into the second tower body (2).

9. The absorption tower according to any one of claims 1 to 7, characterized in that The tray (7) is in the form of a trumpet-shaped structure that opens upward.

10. The absorption tower according to any one of claims 1 to 7, characterized in that A tube bundle type dust removal and demisting mechanism is installed on the top of the first tower body (1), and the tube bundle type dust removal and demisting mechanism is connected to the air outlet (6) of the first tower body (1).

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