Ammonia-containing hot water deaminating tower

Abstract

The utility model discloses a kind of ammonia-containing hot water deaminating tower, it is related to deaminating tower technical field, including main tower body, the upper end of the main tower body is equipped with auxiliary tower body, the inside of the main tower body is sequentially provided liquid distributor from top to bottom, the inside of the main tower body is equipped with wire mesh demister on upper, the sidewall of the main tower body is equipped with gas outlet above, the inside of the main tower body is equipped with steam feed inlet in lower middle position, the inside of the auxiliary tower body is equipped with packing in middle position, the inside of the auxiliary tower body is equipped with auxiliary liquid distributor above, the sidewall of the auxiliary tower body is equipped with medium backflow inlet above, the inside of the auxiliary tower body is equipped with cover bubble ware below, the sidewall of the auxiliary tower body and the position corresponding with the cover bubble ware are equipped with medium output port, the lower end of the auxiliary tower body and be equipped with gas inlet, ammonia gas is blown off and absorbed in wastewater under the condition of not providing additional heat source, ammonia nitrogen in wastewater is handled, while improving processing efficiency, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of ammonia removal tower technology, specifically to an ammonia removal tower for hot water containing ammonia. Background Technology

[0002] Ammonia stripping towers are environmentally friendly devices used to remove ammonia nitrogen from wastewater. They are widely used in industries such as chemical, pharmaceutical, and food processing. Their working principle is based on gas-liquid mass transfer and chemical reaction, typically employing stripping or steam stripping methods. In the stripping tower, wastewater flows downwards and comes into counter-current contact with air or steam flowing upwards. Under alkaline conditions, ammonia nitrogen is converted into free ammonia, which is discharged with the gas flow and then recovered through acid absorption or condensation. The tower is often filled with high-efficiency packing to increase the gas-liquid contact area and improve ammonia removal efficiency. Ammonia stripping towers are characterized by high treatment efficiency and low operating costs, but require supporting tail gas treatment facilities to avoid secondary pollution. Ammonia-containing wastewater generated in factories is usually at a high temperature. Therefore, the heating-related structures of traditional ammonia stripping towers, which require an additional heat source, are often idle. However, these structures still require regular maintenance, increasing production and maintenance costs without positively impacting production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide an ammonia-containing hot water deammoniation tower to solve the problem mentioned in the background art that the ammonia-containing wastewater generated in factories is usually at a high temperature, so the heating-related structures of the traditional deammoniation tower that require an additional heat source are idle, but still require regular maintenance, which increases production and maintenance costs without having a positive impact on production efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an ammonia-containing hot water deammoniation tower, comprising a main tower body, an auxiliary tower body at the upper end of the main tower body, a liquid distributor arranged sequentially from top to bottom inside the main tower body, a waste liquid inlet located inside the main tower body and above the liquid distributor, a wire mesh demister placed inside the main tower body, a gas outlet located on the side wall of the main tower body and above the wire mesh demister, and a steam inlet located inside the main tower body and at the middle position below the liquid distributor. An air inlet is provided on the other side of the steam inlet. A bottom liquid outlet is provided on one side of the lower end of the main tower body. Packing is provided in the middle of the interior of the secondary tower body. A secondary liquid distributor is provided inside the secondary tower body and above the packing. A medium reflux inlet is provided on the side wall of the secondary tower body and above the secondary liquid distributor. A bubble cover is provided inside the secondary tower body and below the packing. A medium outlet is provided on the side wall of the secondary tower body and at a position corresponding to the bubble cover. A gas inlet is provided at the lower end of the secondary tower body and at a position corresponding to the gas outlet.

[0005] Preferably, a partition assembly is provided between the main tower body and the secondary tower body for separation. The lower diameter of the secondary tower body corresponds to that of the main tower body, the upper diameter of the secondary tower body is smaller than that of the main tower body, and a variable diameter section is provided in the middle of the secondary tower body for transition.

[0006] Preferably, the upper part of the inner side of the secondary tower body is provided with a secondary wire mesh demister, and an ammonia vapor outlet is provided at the middle position of the top of the secondary tower body and above the secondary wire mesh demister.

[0007] Preferably, the upper end of the kettle liquid outlet extends into the lower end of the main tower body, and a drain outlet is provided on the other side of the lower end of the main tower body.

[0008] Preferably, the lower end of the main tower body is provided with a base, and the output ends of the kettle liquid outlet and the sewage outlet extend through the base to the outside of the base.

[0009] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional ammonia removal tower that requires an additional heat source, it utilizes the high temperature of the wastewater to strip and absorb ammonia gas in the wastewater in a single tower without providing an additional heat source, thereby treating ammonia nitrogen in the wastewater, improving treatment efficiency while reducing production costs. Attached Figure Description

[0010] Figure 1 This is a front sectional view of the main structure of this utility model.

[0011] In the diagram: 1-Main tower body, 2-Secondary tower body, 3-Liquid distributor, 4-Waste liquid inlet, 5-Wire mesh demister, 6-Gas outlet, 7-Steam inlet, 8-Air inlet, 9-Bottle liquid outlet, 10-Packing, 11-Secondary liquid distributor, 12-Media reflux inlet, 13-Bubble cover, 14-Media outlet, 15-Gas inlet, 16-Baffle assembly, 17-Variable diameter section, 18-Secondary wire mesh demister, 19-Ammonia vapor outlet, 20-Drain outlet, 21-Base. Detailed Implementation

[0012] 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.

[0013] Please see Figure 1This utility model provides an ammonia removal tower for hot water containing ammonia, including a main tower body 1, a secondary tower body 2 at the upper end of the main tower body 1, a liquid distributor 3 arranged sequentially from top to bottom inside the main tower body 1, a waste liquid inlet 4 inside the main tower body 1 above the liquid distributor 3, a wire mesh demister 5 placed inside the main tower body 1, a gas outlet 6 on the side wall of the main tower body 1 above the wire mesh demister 5, a steam inlet 7 inside the main tower body 1 at the middle position below the liquid distributor 3, and a gas outlet 6 at the lower end of the main tower body 1 on the other side of the steam inlet 7. The main tower body 1 has an air inlet 8 on one side, a liquid outlet 9 on one side of the lower end of the main tower body 1, a packing 10 in the middle of the interior of the secondary tower body 2, a secondary liquid distributor 11 in the interior of the secondary tower body 2 and above the packing 10, a medium reflux inlet 12 on the side wall of the secondary tower body 2 and above the secondary liquid distributor 11, a bubble cover 13 in the interior of the secondary tower body 2 and below the packing 10, a medium outlet 14 on the side wall of the secondary tower body 2 and at a position corresponding to the bubble cover 13, and a gas inlet 15 at the lower end of the secondary tower body 2 and at a position corresponding to the gas outlet 6.

[0014] In operation, ammonia-containing hot water is introduced into the main tower body 1 through the waste liquid inlet 4. Steam is introduced into the main tower body 1 through the steam inlet 7 to regulate the temperature inside the main tower body 1. High-speed airflow is introduced into the main tower body 1 through the air inlet 8, flowing sequentially through the liquid distributor 3. The ammonia-containing hot water is distributed sequentially through the liquid distributor 3. The high-speed airflow blows out the ammonia in the ammonia-containing hot water. The gas is demisted by the wire mesh demister 5. Subsequently, the gas is introduced into the auxiliary tower body 2 through the gas outlet 6, pipeline, and gas inlet 15. Inside the main tower 1, the residual liquid from the reaction is discharged to the outside through the liquid outlet 9. The secondary tower 2 is filled with packing material 10. Dilute sulfuric acid is fed into the secondary liquid distributor 11 through the medium reflux inlet 12. The dilute sulfuric acid reacts with ammonia gas inside the packing material 10 and is absorbed. The residual liquid from the reaction is collected by the bubble cover 13 and then fed back into the secondary tower 2 through the medium outlet 14, pipeline and medium reflux inlet 12 to continue participating in the reaction. This tower can efficiently strip ammonia from wastewater and efficiently absorb it using dilute sulfuric acid without the need for additional heat energy.

[0015] A partition assembly 16 is provided between the main tower body 1 and the secondary tower body 2 to separate them, so that they can only be connected through the gas outlet 6, the pipe and the gas inlet 15. The lower diameter of the secondary tower body 2 corresponds to that of the main tower body 1, and the upper diameter of the secondary tower body 2 is smaller than that of the main tower body 1. A transition section 17 is provided in the middle of the secondary tower body 2 to ensure the smoothness of the overall structure of the secondary tower body 2.

[0016] The upper part of the inner side of the secondary tower body 2 is provided with a secondary wire mesh demister 18, which demistes the gas inside the secondary tower body 2. An ammonia vapor outlet 19 is provided at the middle position of the top of the secondary tower body 2 and above the secondary wire mesh demister 18. The demisted ammonia vapor is output to the outside through the ammonia vapor outlet 19.

[0017] The upper end of the kettle liquid outlet 7 extends into the lower end of the main tower body 1. The other side of the lower end of the main tower body 1 is provided with a drain port 20, through which the reaction residue inside the main tower body 1 is discharged.

[0018] The lower end of the main tower body 1 is provided with a base 21. The output ends of the kettle liquid outlet 9 and the sewage outlet 20 extend through the base 21 to the outside of the base 21. The base 21 is used to support the overall ammonia removal tower structure.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ammonia removal tower for ammonia-containing hot water, characterized in that: The system includes a main tower body (1), with a secondary tower body (2) at its upper end. A liquid distributor (3) is arranged sequentially from top to bottom inside the main tower body (1). A waste liquid inlet (4) is located inside the main tower body (1) and above the liquid distributor (3). A wire mesh demister (5) is located above the interior of the main tower body (1). A gas outlet (6) is located on the side wall of the main tower body (1) and above the wire mesh demister (5). A steam inlet (7) is located inside the main tower body (1) and at the middle position below the liquid distributor (3). An air inlet (8) is located at the lower end of the main tower body (1) and on the other side of the steam inlet (7). The main tower body (1) has a bottom liquid outlet (9) on one side. The secondary tower body (2) has a packing (10) in the middle. The secondary tower body (2) has a secondary liquid distributor (11) inside and above the packing (10). The secondary tower body (2) has a medium reflux inlet (12) on the side wall above the secondary liquid distributor (11). The secondary tower body (2) has a bubble cover (13) inside and below the packing (10). The secondary tower body (2) has a medium outlet (14) on the side wall corresponding to the bubble cover (13). The secondary tower body (2) has a gas inlet (15) at the bottom and corresponding to the gas outlet (6).

2. The ammonia removal tower for ammonia-containing hot water according to claim 1, characterized in that: A partition assembly (16) is provided between the main tower body (1) and the secondary tower body (2) for separation. The lower diameter of the secondary tower body (2) is set to correspond to that of the main tower body (1). The upper diameter of the secondary tower body (2) is smaller than that of the main tower body (1). A variable diameter section (17) is provided in the middle of the secondary tower body (2) for transition.

3. The ammonia removal tower for ammonia-containing hot water according to claim 1, characterized in that: The upper part of the inner side of the secondary tower body (2) is provided with a secondary wire mesh demister (18), and an ammonia vapor outlet (19) is provided at the middle position of the top of the secondary tower body (2) and above the secondary wire mesh demister (18).

4. The ammonia removal tower for ammonia-containing hot water according to claim 1, characterized in that: The upper end of the liquid outlet (9) extends into the lower end of the main tower body (1), and the other side of the lower end of the main tower body (1) is provided with a drain outlet (20).

5. The ammonia removal tower for ammonia-containing hot water according to claim 4, characterized in that: The lower end of the main tower body (1) is provided with a base (21), and the output ends of the liquid outlet (9) and the drain outlet (20) extend through the base (21) to the outside of the base (21).

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