Absorption tower for ammonia gas

Abstract

The absorption tower comprises a base, the top of the base is connected with an absorption tower body with an opening in the upper end, one side of the absorption tower body is provided with a spraying mechanism, the inner bottom of the absorption tower body is rotationally provided with a flow dividing fan, and a filling layer is arranged above the flow dividing fan. The bottom of the filling layer is connected with an arc-shaped flow guide plate protruding downwards, a plurality of flow guide holes are formed in the arc-shaped flow guide plate, a first spraying assembly is arranged above the filling layer, a wire mesh demister is arranged above the first spraying assembly, a second spraying assembly is arranged above the wire mesh demister, and an activated carbon plate is arranged above the second spraying assembly. The shunting fan is arranged at the inner bottom of the absorption tower body and is driven by the speed reducing motor, so that gas entering the absorption tower can be uniformly distributed, and the contact area of the gas and absorption liquid is increased; the arc-shaped flow guide plate and the flow guide holes are arranged below the filling layer, so that liquid and gas are fully contacted, and the absorption effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of ammonia treatment technology, specifically to an absorption tower for ammonia. Background Technology

[0002] Ammonia is a colorless gas with a strong, pungent odor. It is easily liquefied into a colorless liquid. Liquefaction can be achieved by applying pressure at room temperature. It is soluble in water, ethanol, and ether. Ammonia is used in the manufacture of ammonia water, nitrogen fertilizers (urea, ammonium bicarbonate, etc.), compound fertilizers, nitric acid, ammonium salts, and soda ash, and is widely used in chemical, light industry, fertilizer, pharmaceutical, and synthetic fiber industries.

[0003] Ammonia leaks can pollute the environment, and people in the contaminated area are prone to discomfort or even poisoning from inhaling ammonia. Currently, ammonia storage rooms are all connected to ammonia absorption towers. When ammonia leaks from the storage room, it is treated by the ammonia absorption tower to avoid the harm caused by ammonia. In current use, ammonia absorption towers generally only have a spray mechanism to treat ammonia by spraying. In this way, the ammonia encounters less resistance in the ammonia absorption tower, resulting in a shorter time for the ammonia to pass through the ammonia absorption tower, thus affecting the treatment effect of ammonia.

[0004] Therefore, it is necessary to provide a new ammonia absorption tower to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an ammonia absorption tower with good ammonia treatment effect.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: It provides an absorption tower for ammonia, including a base, an absorption tower body with an open top connected to the top of the base, a spray mechanism on one side of the absorption tower body, a flow divider fan rotatably located at the bottom inner part of the absorption tower body, a filling layer above the flow divider fan, a downwardly protruding arc-shaped guide plate connected to the bottom of the filling layer, multiple flow guide holes on the arc-shaped guide plate, a first spray assembly above the filling layer, a wire mesh demister above the first spray assembly, a second spray assembly above the wire mesh demister, and an activated carbon plate above the second spray assembly.

[0007] Furthermore, the diversion fan includes at least three fan blades, a geared motor is installed in the base, and the output end of the geared motor passes through the bottom of the absorption tower body and is fixedly connected to the rotating shaft of the diversion fan.

[0008] Furthermore, the spraying mechanism also includes a water tank installed on the base, and a water pump is installed on the top surface of the water tank. The water pump is connected to the first spraying assembly, the second spraying assembly and the water tank through water pipes.

[0009] Furthermore, the first spray assembly and the second spray assembly are the same, both including a spray pipe and a nozzle.

[0010] Furthermore, a drain pipe connected to the water tank is provided on the bottom outer wall of the absorption tower body, and a drain valve is installed on the drain pipe.

[0011] Furthermore, an air inlet pipe is provided on the outer wall of the absorption tower body on one side of the diversion fan.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By installing a flow distribution fan at the bottom of the absorption tower body and driving it with a geared motor, the gas entering the absorption tower can be effectively and evenly distributed, increasing the contact area between the gas and the absorption liquid, thereby enhancing the absorption efficiency.

[0014] 2. The arc-shaped guide plate and guide holes set below the filling layer can guide the absorbent liquid to flow along a specific path, avoid the liquid falling directly, ensure that the liquid and gas are in full contact, and improve the absorption effect.

[0015] 3. The wire mesh demister effectively removes liquid droplets from the gas, preventing droplet entrainment and ensuring the purity of the treated gas, thus avoiding contamination and damage to subsequent equipment. By incorporating a water tank, pump, and drain pipe, the absorbent liquid can be recycled, reducing water waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the absorption tower body in this utility model;

[0017] Figure 2 This is a schematic diagram of the guide plate in this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0019] In the diagram: 1-base, 2-absorption tower body, 3-spraying mechanism, 4-diverter fan, 5-filling layer, 6-arc guide plate, 7-wire mesh demister, 8-activated carbon plate, 9-drainage pipe, 10-air inlet pipe; 31-first spraying assembly, 32-second spraying assembly, 33-water tank, 34-water pump, 61-guide hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] Combination Figures 1 to 3 An absorption tower for ammonia is shown, comprising a base 1, an absorption tower body 2 with an open top connected to the top of the base 1, a spray mechanism 3 on one side of the absorption tower body 2, a diverter fan 4 rotatably located at the bottom of the absorption tower body 1, a filling layer 5 above the diverter fan 4, a downwardly protruding arc-shaped guide plate 6 connected to the bottom of the filling layer 5, a plurality of guide holes 61 opened on the arc-shaped guide plate 6, a first spray assembly 31 above the filling layer 5, a wire mesh demister 7 above the first spray assembly 31, a second spray assembly 32 above the wire mesh demister 7, and an activated carbon plate 8 above the second spray assembly 32.

[0023] The diversion fan 4 includes at least three fan blades. A geared motor is installed in the base 1, and the output end of the geared motor passes through the bottom of the absorption tower body 2 and is fixedly connected to the rotating shaft of the diversion fan 4. The geared motor drives the diversion fan 4 to rotate, which evenly disperses the incoming ammonia gas, so that it forms a uniform airflow distribution inside the absorption tower and reduces the rising speed of the ammonia gas.

[0024] The spraying mechanism 3 also includes a water tank 33 mounted on the base 1. A water pump 34 is mounted on the top surface of the water tank 33. The water pump 34 is connected to the first spraying assembly 31, the second spraying assembly 32 and the water tank 33 through water pipes. The first spraying assembly 31 and the second spraying assembly 32 are the same, both including spray pipes and nozzles. The spraying mechanism 3 uses the water pump 34 to transport the absorbent liquid in the water tank 33 to the first spraying assembly 31 and the second spraying assembly 32 to absorb ammonia.

[0025] The bottom outer wall of the absorption tower body 2 is provided with a drain pipe 9 connected to the water tank 33, and a drain valve is installed on the drain pipe 9; an air inlet pipe 10 is provided on the outer wall of the absorption tower body 2 on one side of the diversion fan 4.

[0026] Working principle: Ammonia gas enters the bottom of the absorption tower body 2 through the inlet pipe 10. At this time, the geared motor drives the diversion fan 4 to rotate, which evenly disperses the incoming ammonia gas, forming a uniform airflow distribution inside the absorption tower. After passing through the diversion fan 4, the ammonia gas flows upward and enters the packing layer 5. The arc-shaped guide plate 6 and the guide hole 61 below the packing layer 5 increase the contact area between the ammonia gas and the absorbent liquid, ensuring that the absorbent liquid and ammonia gas are in full contact. The ammonia gas continues to flow upward and passes through the first spray assembly 21. Water 34 draws absorbent liquid from the water tank 33 and sprays it evenly into the ammonia gas flow through the nozzles. The absorbent liquid and ammonia gas undergo a chemical reaction, and some of the ammonia gas is absorbed by the absorbent liquid. After the first stage of spraying, the gas continues to flow upwards, passing through a wire mesh demister 7. The wire mesh demister 7 removes liquid droplets from the gas, preventing liquid droplet entrainment and ensuring the purity of the treated gas. After passing through the wire mesh demister 7, the gas enters the second spray assembly 32, where the absorbent liquid is sprayed again to further absorb the remaining ammonia. After two stages of spraying, the gas continues to flow upwards, passing through an activated carbon plate 8. The activated carbon 8 adsorbs the residual trace amounts of ammonia, ensuring that the final emitted gas meets environmental standards. The absorbent liquid gradually flows downwards during the spraying process and eventually returns to the water tank 33 through the drain pipe 9.

[0027] The following are some options for the ammonia absorption liquid mentioned above:

[0028] Water: Ammonia is highly soluble in water; 1 volume of water can dissolve 700 volumes of ammonia. Water is the most common and inexpensive absorbent.

[0029] Acidic solutions: such as dilute hydrochloric acid or dilute sulfuric acid. Ammonia is an alkaline gas and can be absorbed by acidic substances.

[0030] Saturated saline solution (saturated NaCl solution): Ammonia gas has a higher solubility in saturated saline solution than in pure water, so its absorption effect is better.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An absorption tower for ammonia gas, comprising a base (1), an upper end open absorption tower body (2) connected to the top of the base (1), a spray mechanism (3) arranged on one side of the absorption tower body (2), characterized in that: The inner bottom of the absorption tower body (2) is rotatably provided with a flow distribution fan (4), an upper portion of the flow distribution fan (4) is provided with a filling layer (5), a bottom of the filling layer (5) is connected with a downwardly protruding arc-shaped flow guide plate (6), a plurality of flow guide holes (61) are formed in the arc-shaped flow guide plate (6), an upper portion of the filling layer (5) is provided with a first spraying assembly (31), an upper portion of the first spraying assembly (31) is provided with a wire mesh demister (7), an upper portion of the wire mesh demister (7) is provided with a second spraying assembly (32), and an upper portion of the second spraying assembly (32) is provided with an activated carbon plate (8).

2. The absorption column for ammonia gas according to claim 1, characterized by: The flow distribution fan (4) comprises at least three fan blades, a reduction motor is mounted in the base (1), and an output end of the reduction motor is fixedly connected with a rotating shaft of the flow distribution fan (4) through the bottom of the absorption tower body (2).

3. The absorption column for ammonia gas according to claim 2, characterized by: The spraying mechanism (3) further comprises a water tank (33) mounted on the base (1), a water pump (34) is mounted on a top surface of the water tank (33), and the water pump (34) is connected with the first spraying assembly (31), the second spraying assembly (32) and the water tank (33) through water pipes respectively.

4. The absorption column for ammonia gas according to claim 3, characterized by: The first spraying assembly (31) and the second spraying assembly (32) are the same, and both comprise a spraying pipe and a spray head.

5. The absorption column for ammonia gas according to claim 4, characterized by: A drain pipe (9) connected with the water tank (33) is arranged on an outer side wall of the bottom of the absorption tower body (2), and a drain valve is mounted on the drain pipe (9).

6. The absorption column for ammonia gas according to claim 5, characterized by: An air inlet pipe (10) is arranged on an outer side wall of the absorption tower body (2) on one side of the flow distribution fan (4).

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