Novel efficient oxidation tower for desulfurization waste liquid

Abstract

The utility model relates to the technical field of desulfurization equipment, and particularly provides a novel efficient oxidation tower for desulfurization waste liquid, which is characterized in that a base is fixed at the bottom of a tower body, a stirring device is mounted at the top of the tower body, a feed port and a gas outlet are further formed in the top of the tower body, a discharge port is formed in the bottom of the tower body, and a gas inlet is formed in the side surface below the tower body; the baffling component comprises a first conical shell and a second conical shell, the first conical shell is coaxially fixed on a driving shaft of the stirring device, the second conical shell is fixed on the inner wall of the tower body, the first conical shell and the second conical shell are coaxially arranged at an interval, openings of the first conical shell and the second conical shell face upwards, and the first conical shell and the second conical shell are arranged in a staggered mode. The first conical shell is arranged above the second conical shell, a first flow channel is formed between the opening edge of the first conical shell and the inner wall of the tower body in a spaced mode, the bottom of the second conical shell is open, and a second flow channel is formed between the opening edge and a driving shaft of the stirring device in a spaced mode. The waste liquid treatment device can improve the waste liquid treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization equipment technology, and in particular to a novel high-efficiency oxidation tower for desulfurization waste liquid. Background Technology

[0002] In industrial production, various sectors generate a certain amount of desulfurization wastewater that requires treatment. The coking industry, in particular, produces large quantities of desulfurization wastewater and sulfur foam. This wastewater and foam contain various substances such as sulfur, sulfates, thiosulfates, and thiocyanates. Typically, after filtration, solid sulfur and impurities are removed from the wastewater and foam. Sulfates, thiosulfates, and thiocyanates remain in the filtrate for further treatment. Thiosulfates are oxidized to sulfates, and ammonium thiocyanate is converted back to sulfates for sale as industrial products. This process avoids pollution and generates economic benefits. These filtrates are generally treated using oxidation towers.

[0003] However, the oxidant in the oxidation tower is usually air. The oxidation reaction between air and desulfurization waste liquid is affected by factors such as contact time, contact area, and reaction conditions. The gas-liquid exchange structure in the oxidation tower has the greatest impact. How to improve the oxidation treatment effect by improving the internal structure of the oxidation tower has become one of the technical problems that urgently need to be solved. Utility Model Content

[0004] In view of this, this utility model proposes a new type of high-efficiency oxidation tower for desulfurization wastewater, which aims to improve the oxidation treatment effect of desulfurization wastewater through a more reasonable structural design.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a novel high-efficiency oxidation tower for desulfurization wastewater, including: a tower body, a base, a feed inlet, a discharge outlet, an air inlet, an air outlet, a stirring device, and a baffle component. The tower body is a hollow cavity. The base is fixed at the bottom of the tower body, and a stirring device is installed at the top of the tower body. The top of the tower body also has a feed inlet and an air outlet, the bottom of the tower body has a discharge outlet, and the lower side of the tower body has an air inlet. The baffle component includes a first conical shell and a second conical shell. The first conical shell is coaxially fixed on the drive shaft of the stirring device, and the second conical shell is fixed on the inner wall of the tower body. The first conical shell and the second conical shell are coaxial and spaced apart. Both the first conical shell and the second conical shell have their openings facing upwards. The first conical shell is positioned above the second conical shell. The opening edge of the first conical shell forms a first flow channel with a gap between it and the inner wall of the tower body. The bottom of the second conical shell is open, and the opening edge forms a second flow channel with a gap between it and the drive shaft of the stirring device.

[0006] In the above embodiments, the feed inlet is used to introduce the waste liquid to be treated, and the air inlet is used to introduce air as an oxidant. After the waste liquid flows into the first conical shell, the stirring device drives the first conical shell to rotate. Under the action of centrifugal force, the waste liquid will fly out along the edge of the first conical shell, thereby forming a dispersed liquid film and droplets. As the air flows from bottom to top, it will pass through these dispersed liquid films and droplets, thereby making uniform contact and achieving oxidation treatment. The liquid film and droplets that fly out will also flow along the inner wall of the tower to the lower second conical shell. The air in the space between the first conical shell and the second conical shell will continue to contact these waste liquids again to achieve oxidation treatment. Finally, the liquid collects at the opening at the bottom of the second conical shell and flows out.

[0007] In some embodiments, the number of baffles is not less than two, and multiple baffles are arranged in an array along the axis of the drive shaft of the stirring device.

[0008] Multiple baffles can further extend the contact time between the waste liquid and the air.

[0009] In some embodiments, the first conical shell and the second conical shell have the same cone angle, which is 160°-179°.

[0010] In some embodiments, the distance between the first conical shell and the second conical shell is 2-5 cm.

[0011] In some implementations, the width of the first flow channel is 2-5 cm.

[0012] In some implementations, the width of the second flow channel is 2-5 cm.

[0013] In some embodiments, an acid inlet is also included, with an acid inlet provided at the top of the tower body.

[0014] In the above embodiments, the acid inlet is used to introduce acid solution, thereby adjusting the acidity of the waste liquid.

[0015] In some embodiments, a guide plate is also included. The guide plate is annular and coaxially fixed to the inner wall of the tower body. The guide plate is located above the uppermost first conical shell, and the projection of the inner edge of the guide plate in the vertical direction is located on the surface of the first conical shell.

[0016] In some implementations, a manhole is also included, with a manhole provided at the top of the tower.

[0017] In the above embodiments, the manhole is used for manual inspection and access.

[0018] The present invention has the following advantages over the prior art:

[0019] The oxidation tower provided by this utility model uses a rotating first conical shell to rotate and process the fed waste liquid, thereby forming a circumferentially uniformly distributed liquid film and droplets. The circumferentially uniformly distributed liquid film and droplets pass through the air flow channel. Compared with the conventional baffle-type gas-liquid exchange structure, it has a higher gas-liquid exchange efficiency, which is beneficial to improving the efficiency of waste liquid treatment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the novel high-efficiency oxidation tower for desulfurization wastewater according to this utility model.

[0022] In the figure: 1-tower body, 2-base, 3-feed inlet, 4-discharge outlet, 5-air inlet, 6-air outlet, 7-stirring device, 8-baffle component, 9-acid inlet, 10-guide plate, 11-first flow channel, 12-second flow channel, 13-manhole, 81-first conical shell, 82-second conical shell. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application 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 application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of this invention pertain. If any definition stated in this section is contrary to or otherwise inconsistent with a definition stated in a patent, patent application, published patent application, or other publication incorporated herein by reference, the definitions listed here shall prevail over those incorporated herein by reference.

[0028] like Figure 1 As shown, the novel high-efficiency oxidation tower for desulfurization wastewater of this utility model includes: a tower body 1, a base 2, a feed inlet 3, a discharge outlet 4, an air inlet 5, an air outlet 6, a stirring device 7, and a baffle component 8. The tower body 1 is a hollow cavity. The base 2 is fixed to the bottom of the tower body 1, and the stirring device 7 is installed on the top of the tower body 1. The top of the tower body 1 also has a feed inlet 3 and an air outlet 6. The bottom of the tower body 1 has a discharge outlet 4, and the lower side of the tower body 1 has an air inlet 5. The baffle component 8 includes a first conical shell 81 and a second conical shell 82. The shell 81 is coaxially fixed on the drive shaft of the stirring device 7, and the second conical shell 82 is fixed on the inner wall of the tower body 1. The first conical shell 81 and the second conical shell 82 are coaxial and spaced apart. Both the first conical shell 81 and the second conical shell 82 have their openings facing upwards. The first conical shell 81 is positioned above the second conical shell 82. The opening edge of the first conical shell 81 is spaced apart from the inner wall of the tower body 1 to form a first flow channel 11. The bottom opening of the second conical shell 82 is spaced apart from the opening edge of the second conical shell 82 to form a second flow channel 12.

[0029] In the oxidation tower based on the above embodiment, the waste liquid entering from the feed inlet 3 enters the first conical shell 81. The stirring device 7 drives the first conical shell 81 to rotate, thereby causing the waste liquid in the first conical shell 81 to centrifuge and disperse in the form of liquid film and droplets to the inner wall of the tower body 1. Then, under the action of gravity, the waste liquid flows into the second conical shell 82 and gathers at the opening at the bottom of the second conical shell 82, and finally flows to the bottom of the tower body 1. During this process, the waste liquid passes through the first flow channel 11, between the first conical shell 81 and the second conical shell 82, and the second flow channel 12 in sequence. Meanwhile, the air entering from the air inlet 5 passes through the second flow channel 12, between the first conical shell 81 and the second conical shell 82, and the first flow channel 11 in sequence. The air and waste liquid flow in opposite directions. Since the liquid film formed by centrifugal force has a larger surface area and more uniform dispersion than the liquid film formed by gravity flow, the oxidation tower of this embodiment can achieve a good contact effect between waste liquid and air. The waste liquid after oxidation treatment is discharged through the discharge port 4 below.

[0030] In some embodiments, the number of baffles 8 is not less than two, and the plurality of baffles 8 are arranged in an array along the drive shaft axis of the stirring device 7.

[0031] In the above embodiments, the function of the baffle component 8 is to uniformly distribute the waste liquid and provide a channel structure that can uniformly contact the air. After multiple baffle components 8 are arrayed, the contact time between the waste liquid and the air can be greatly extended. Moreover, the array direction along the drive shaft axis can greatly reduce the space occupancy, thus greatly improving the space utilization rate.

[0032] In some embodiments, the first conical shell 81 and the second conical shell 82 have the same cone angle, which is 160°-179°.

[0033] As a preferred cone angle, the waste liquid inside the first conical shell 81 can be centrifugally dispersed at a lower rotation speed, and a larger cone angle can make the waste liquid flow rate on the surface of the second conical shell 82 slower, which is beneficial to increasing the contact time with air.

[0034] In some embodiments, the distance between the first conical shell 81 and the second conical shell 82 is 2-5 cm.

[0035] In the above embodiments, as a preferred design dimension, the distance between the first conical shell 81 and the second conical shell 82, which is 2-5 cm, is beneficial to improving the contact efficiency between air and waste liquid, while not affecting the normal flow of waste liquid.

[0036] In some embodiments, the width of the first flow channel 11 is 2-5 cm.

[0037] In the above embodiments, the width of the first flow channel 11 refers to the distance between the edge of the first conical shell 81 and the inner wall of the tower body 1. A width of 2-5cm is beneficial to improving the contact efficiency between air and waste liquid, while not affecting the normal flow of waste liquid.

[0038] In some embodiments, the width of the second flow channel 12 is 2-5 cm.

[0039] In the above embodiments, the width of the second flow channel 12 refers to the distance between the bottom opening edge of the second conical shell 82 and the surface of the drive shaft of the stirring device 7. A width design of 2-5cm is beneficial to improving the contact efficiency between air and waste liquid, while not affecting the normal flow of waste liquid.

[0040] In some embodiments, an acid inlet 9 is also included, and an acid inlet 9 is provided at the top of the tower body 1.

[0041] In the above embodiments, the acid inlet 9 is used to introduce acid to adjust the acidity of the waste liquid.

[0042] In some embodiments, a guide plate 10 is also included. The guide plate 10 is annular and is coaxially fixed to the inner wall of the tower body 1. The guide plate 10 is located above the uppermost first conical shell 81, and the projection of the inner edge of the guide plate 10 in the vertical direction is located on the surface of the first conical shell 81.

[0043] In the above embodiments, the function of the guide plate 10 is to guide the waste liquid from the feed inlet 3 so that the waste liquid can enter the first conical shell 81.

[0044] In some embodiments, a manhole 13 is also included, which is provided on the top of the tower body 1.

[0045] In the above embodiments, the manhole 13 is used to provide a maintenance access.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel high-efficiency oxidation tower for desulfurization wastewater, characterized in that, include: The tower body (1), base (2), feed inlet (3), discharge outlet (4), air inlet (5), air outlet (6), stirring device (7), and baffle component (8) are provided. The tower body (1) is a hollow cavity. The base (2) is fixed at the bottom of the tower body (1). The stirring device (7) is installed at the top of the tower body (1). The top of the tower body (1) is also provided with a feed inlet (3) and an air outlet (6). The bottom of the tower body (1) is provided with an discharge outlet (4). The lower side of the tower body (1) is provided with an air inlet (5). The baffle component (8) includes a first conical shell (81) and a second conical shell (82). The first conical shell (81) The first conical shell (81) and the second conical shell (82) are coaxially fixed on the drive shaft of the stirring device (7) and fixed on the inner wall of the tower body (1). The first conical shell (81) and the second conical shell (82) are coaxial and spaced apart. The first conical shell (81) and the second conical shell (82) both have their openings facing upwards. The first conical shell (81) is located above the second conical shell (82). The opening edge of the first conical shell (81) and the inner wall of the tower body (1) are spaced apart to form a first flow channel (11). The bottom opening of the second conical shell (82) and the opening edge of the second conical shell (82) are spaced apart to form a second flow channel (12).

2. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, The number of baffles (8) is not less than two, and multiple baffles (8) are arranged in an array along the axis of the drive shaft of the stirring device (7).

3. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, The first conical shell (81) and the second conical shell (82) have the same cone angle, which is 160°-179°.

4. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, The distance between the first conical shell (81) and the second conical shell (82) is 2-5 cm.

5. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, The width of the first flow channel (11) is 2-5cm.

6. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, The width of the second flow channel (12) is 2-5cm.

7. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, It also includes an acid inlet (9), which is provided at the top of the tower body (1).

8. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, It also includes a guide plate (10), which is annular. The annular guide plate (10) is coaxially fixed to the inner wall of the tower body (1). The guide plate (10) is located above the uppermost first conical shell (81). The projection of the inner edge of the guide plate (10) along the vertical direction is located on the surface of the first conical shell (81).

9. The novel high-efficiency oxidation tower for desulfurization wastewater as described in claim 1, characterized in that, It also includes a manhole (13), which is provided at the top of the tower body (1).

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