Coal chemical gasification wastewater defluorination flocculation sedimentation device

Abstract

This utility model relates to the field of wastewater treatment technology, specifically disclosing a flocculation and sedimentation device for defluorinating coal chemical gasification wastewater. The device includes a protective shell with a first cavity at its upper end and a second cavity at its lower end. A feed pipe is installed through the upper surface of the protective shell, and a drain pipe is installed through the lower surface. A drive motor is fixedly connected to the upper surface of the protective shell. A stirring cylinder is mounted on the top surface of the first cavity, and mixing blades are fixedly connected to the outer surface of the stirring cylinder. A filter screen is fixedly connected to the inner wall of the second cavity. This flocculation and sedimentation device for defluorinating coal chemical gasification wastewater uses a drive motor to rotate the stirring cylinder and the inclined mixing blades, creating turbulence within the cylindrical first cavity. This ensures sufficient contact between the coal chemical gasification wastewater and the defluorinating agent, accelerating the reaction. The inclined bottom surface of the first cavity guides the mixture to flow rapidly into the second cavity.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a flocculation and sedimentation device for defluorinating coal chemical gasification wastewater. Background Technology

[0002] Coal chemical gasification wastewater is highly polluting wastewater generated by the coal gasification process in the coal chemical industry. Its complex composition and difficult treatment make it a key and challenging aspect of environmental governance in the coal chemical industry. Coal chemical gasification wastewater is mainly generated during the coal gasification process, specifically including: gas washing water (wastewater formed during the washing and cooling of crude coal gas produced by the gasifier, which is the main source); equipment flushing water (wastewater generated from cleaning gasification equipment and washing floors); and condensate (condensate produced during the syngas cooling process). Currently, the main methods for treating fluoride-containing wastewater both domestically and internationally include: coagulation sedimentation, ion exchange, adsorption, electrodialysis, reverse osmosis, and membrane separation. Coagulation sedimentation is the most effective and simplest method, with advantages such as low operating costs, high removal efficiency, and the ability to treat high-concentration fluoride-containing wastewater.

[0003] Existing defluorination devices for coal chemical gasification wastewater use agitation followed by flocculation and sedimentation with a defluorinating agent. However, these devices are not efficient in separating the sediment from the wastewater, thus reducing their operational efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a flocculation and sedimentation device for defluorinating coal chemical gasification wastewater, in order to solve the problem mentioned in the background art that existing defluorinating devices are not convenient for effectively separating precipitates and wastewater, thus reducing work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flocculation and sedimentation device for defluorinating coal chemical gasification wastewater, comprising a protective shell with a first cavity at its upper end and a second cavity at its lower end. A feed pipe is installed through the upper surface of the protective shell, and a drain pipe is installed through the lower surface of the protective shell. A drive motor is fixedly connected to the upper surface of the protective shell. A stirring cylinder is provided on the top surface of the first cavity, and a mixing blade is fixedly connected to the outer surface of the stirring cylinder. A filter screen is fixedly connected to the inner wall of the second cavity. A sedimentation and cleaning pipe is installed through the side surface of the protective shell. A first filter hole is provided on the surface of the filter screen. A linkage drainage mechanism is provided on the inner wall of the second cavity, which drives a wastewater baffle to move via an electric push rod, thereby aligning the second filter hole with the first filter hole to facilitate the discharge of treated wastewater.

[0006] Preferably, the first cavity is connected to the feed pipe, the second cavity is connected to the drain pipe, the first cavity is cylindrical, and the bottom surface of the first cavity is inclined.

[0007] The above technical solution connects the first cavity to the feed pipe, allowing wastewater and defluorinating agent to directly enter the mixing area; the second cavity connects to the drainage pipe, enabling the treated wastewater to be discharged smoothly, thus optimizing the wastewater treatment process and ensuring the smooth flow of materials.

[0008] Preferably, the stirring cylinder is rotatably connected to the first cavity, the upper end of the stirring cylinder penetrates the upper surface of the protective shell, and the upper end of the stirring cylinder is fixedly connected to the output end of the drive motor, and the mixing blade is designed to be inclined.

[0009] Using the above technical solution, the stirring cylinder and the first cavity are rotatably connected, and its upper end is fixedly connected to the output end of the drive motor, so that the drive motor can stably drive the stirring cylinder to rotate, providing power for the mixing of wastewater and defluorinating agent.

[0010] Preferably, the upper surface of the filter screen is inclined, the sedimentation cleaning pipe is connected to the second cavity, and the opening of the sedimentation cleaning pipe is located on the side of the filter screen with a lower height.

[0011] The above technical solution features an inclined upper surface for the filter screen, which allows sediment to slide to the lower side under gravity, preventing sediment buildup on the screen and ensuring the filtration efficiency of the filter screen.

[0012] Preferably, the linkage drainage mechanism includes an electric push rod, which is embedded in the inner wall of the second cavity. The output end of the electric push rod is fixedly connected to a wastewater baffle, and the surface of the wastewater baffle is provided with a second filter hole.

[0013] Using the above technical solution, the linkage drainage mechanism consists of an electric push rod and a wastewater baffle. The electric push rod drives the wastewater baffle to move, which can realize the correspondence and misalignment between the second filter hole and the first filter hole, thereby controlling the timing of wastewater discharge and ensuring the full progress of the sedimentation process.

[0014] Preferably, the width of the wastewater baffle is the same as the width of the mixing blade, and the wastewater baffle is slidably connected to the second cavity and the protective shell respectively.

[0015] By adopting the above technical solution, the width of the wastewater baffle is the same as the width of the mixing blade, ensuring that the wastewater baffle can effectively cover the area of ​​the filter screen during the sliding process, thus preventing unfiltered wastewater from being discharged directly.

[0016] Preferably, the second filter hole is elongated, and the width of the second filter hole is greater than the width of the first filter hole, and the second filter hole is offset from the first filter hole.

[0017] By adopting the above technical solution, the second filter hole is designed as a long strip, which increases the flow area of ​​wastewater, allowing the treated wastewater to be discharged more quickly and improving drainage efficiency.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the flocculation and sedimentation device for defluorinating coal chemical gasification wastewater:

[0019] 1. The stirring cylinder and the inclined mixing blade are driven by the drive motor to rotate, forming turbulence in the first cylindrical cavity, so that the coal chemical gasification wastewater and the defluorinating agent can fully contact each other, accelerating the flocculation reaction. The bottom surface of the inclined first cavity can guide the mixed liquid to flow into the second cavity quickly to avoid residue.

[0020] 2. The inclined filter screen in the second cavity allows the flocculated sediment to slide down to the opening of the sedimentation and cleaning pipe under the action of gravity. At the same time, the linkage drainage mechanism controls the wastewater baffle through the electric push rod. When the second filter hole is aligned with the first filter hole, the treated wastewater is discharged through the drainage pipe. When misaligned, it can block the sediment and ensure the separation effect.

[0021] 3. The sedimentation cleaning pipe opening is located on the lower side of the filter screen, which facilitates the centralized discharge of sediment; the wastewater baffle is the same width as the mixing paddle and is slidably connected, which can precisely control the timing of drainage; the width of the elongated second filter hole is greater than that of the first filter hole, which not only ensures drainage efficiency but also prevents sediment leakage and reduces manual maintenance costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the connection between the stirring cylinder and the mixing blades of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the connection between the protective shell and the feed pipe of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the connection between the protective shell and the sedimentation cleaning pipe of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the connection between the filter screen and the first filter hole of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the connection between the electric push rod and the wastewater baffle of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the connection between the wastewater baffle and the second filter hole of this utility model.

[0028] In the diagram: 1. Protective outer shell; 2. First cavity; 3. Second cavity; 4. Feed pipe; 5. Drainage pipe; 6. Drive motor; 7. Stirring cylinder; 8. Mixing paddle; 9. Filter screen; 10. Sedimentation and cleaning pipe; 11. Electric push rod; 12. Wastewater baffle; 13. First filter hole; 14. Second filter hole. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-6 This utility model provides a technical solution: a flocculation and sedimentation device for defluorinating coal chemical gasification wastewater, comprising a protective shell 1, a first cavity 2, a second cavity 3, a feed pipe 4, a drainage pipe 5, a drive motor 6, a stirring cylinder 7, a mixing blade 8, a filter screen 9, a sedimentation and cleaning pipe 10, an electric push rod 11, a wastewater baffle 12, a first filter hole 13, and a second filter hole 14. The protective shell 1 has a first cavity 2 at its upper end and a second cavity 3 at its lower end. The first cavity 2 is connected to the feed pipe 4, and the second cavity 3 is connected to the drainage pipe 5. The first cavity 2 is cylindrical and its bottom surface is inclined. Wastewater and defluorinating agent enter the first cavity 2 through the feed pipe 4. The drive motor 6 drives the stirring cylinder 7 to rotate, and the inclined mixing blade 8 fully stirs the materials. The cylindrical first cavity 2 ensures uniform stirring, and the inclined bottom surface promotes the flow of the mixture to the second cavity 3.

[0031] A feed pipe 4 is installed through the upper surface of the protective shell 1, and a drain pipe 5 is installed through the lower surface of the protective shell 1. A drive motor 6 is fixedly connected to the upper surface of the protective shell 1. A stirring cylinder 7 is provided on the top surface of the first cavity 2. A mixing blade 8 is fixedly connected to the outer surface of the stirring cylinder 7. A filter screen 9 is fixedly connected to the inner wall of the second cavity 3. The stirring cylinder 7 and the first cavity 2 are rotatably connected. The upper end of the stirring cylinder 7 penetrates the upper surface of the protective shell 1, and the upper end of the stirring cylinder 7 is fixedly connected to the output end of the drive motor 6. The mixing blade 8 is inclined. The upper surface of the filter screen 9 is inclined. The sedimentation and cleaning pipe 10 is connected to the second cavity 3, and the opening of the sedimentation and cleaning pipe 10 is located on the side with the lower height of the filter screen 9. The mixed liquid falls into the inclined filter screen 9 of the second cavity 3 through the first filter hole 13. The flocculent formed by fluoride ions and defluorinating agent precipitates on the screen. The clear water flows downward through the screen holes, and the sediment slides towards the opening of the sedimentation and cleaning pipe 10 due to the inclined surface.

[0032] A sedimentation cleaning pipe 10 is installed through the side surface of the protective shell 1. A first filter hole 13 is opened on the surface of the filter screen 9. The linkage drainage mechanism includes an electric push rod 11, which is embedded in the inner wall of the second cavity 3. A wastewater baffle 12 is fixedly connected to the output end of the electric push rod 11. A second filter hole 14 is opened on the surface of the wastewater baffle 12. In the initial state, the second filter hole 14 of the wastewater baffle 12 is misaligned with the first filter hole 13 to block the sediment from passing through. After sedimentation is completed, the electric push rod 11 pushes the wastewater baffle 12 to slide, so that the second filter hole 14 is aligned with the first filter hole 13, and the clean water is discharged through the drainage pipe 5.

[0033] The inner wall of the second cavity 3 is equipped with a linkage drainage mechanism, which drives the wastewater baffle 12 to move via an electric push rod 11, thereby aligning the second filter hole 14 with the first filter hole 13 to facilitate the discharge of treated wastewater. The width of the wastewater baffle 12 is the same as the width of the mixing blade 8, and the wastewater baffle 12 is slidably connected to the second cavity 3 and the protective shell 1 respectively. The second filter hole 14 is a long strip design, and the width of the second filter hole 14 is greater than the width of the first filter hole 13. The second filter hole 14 is staggered with the first filter hole 13. The sedimentation and cleaning pipe 10 is connected to the second cavity 3. The sediment on the inclined screen plate 9 slides into the pipe due to gravity and can be discharged by periodically opening the pipe valve to ensure continuous and efficient operation of the device.

[0034] Working principle: When using this coal chemical gasification wastewater defluorination agent flocculation and sedimentation device, wastewater and defluorination agent enter the first cavity 2 through the feed pipe 4. The drive motor 6 drives the stirring cylinder 7 and mixing blade 8 to stir and mix. The inclined bottom surface causes the mixture to flow into the second cavity 3. On the inclined filter screen 9, the flocculent settles and slides towards the sedimentation and cleaning pipe 10. The clean water falls through the first filter hole 13. The electric push rod 11 controls the wastewater baffle 12. When the second filter hole 14 is aligned with the first filter hole 13, the clean water is discharged through the drain pipe 5. When misaligned, the sediment is blocked. The sediment is collected through the inclined screen 9 and discharged through the sedimentation and cleaning pipe 10, which increases the overall practicality.

[0035] 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. A flocculation and sedimentation device for defluorinating coal chemical gasification wastewater, comprising a protective shell (1), a first cavity (2) being formed at its upper end, and a second cavity (3) being formed at the lower end of the first cavity (2), characterized in that: A feed pipe (4) is installed through the upper surface of the protective shell (1), a drain pipe (5) is installed through the lower surface of the protective shell (1), a drive motor (6) is fixedly connected to the upper surface of the protective shell (1), a stirring cylinder (7) is provided on the top surface of the first cavity (2), a mixing blade (8) is fixedly connected to the outer surface of the stirring cylinder (7), a filter screen (9) is fixedly connected to the inner wall of the second cavity (3), a sedimentation cleaning pipe (10) is installed through the side surface of the protective shell (1), a first filter hole (13) is opened on the surface of the filter screen (9), and a linkage drainage mechanism is provided on the inner wall of the second cavity (3). The mechanism drives the wastewater baffle (12) to move through the electric push rod (11), thereby making the second filter hole (14) correspond to the first filter hole (13), so as to facilitate the discharge of treated wastewater.

2. The coal chemical vaporization wastewater defluorination agent flocculation and precipitation device according to claim 1, characterized in that: The first cavity (2) is connected to the feed pipe (4), and the second cavity (3) is connected to the drain pipe (5). The first cavity (2) is cylindrical and the bottom surface of the first cavity (2) is inclined.

3. The coal chemical vaporization wastewater defluorination agent flocculation and precipitation device according to claim 1, characterized in that: The stirring cylinder (7) is rotatably connected to the first cavity (2). The upper end of the stirring cylinder (7) penetrates the upper surface of the protective shell (1), and the upper end of the stirring cylinder (7) is fixedly connected to the output end of the drive motor (6). The mixing blade (8) is designed to be inclined.

4. The coal chemical vaporization wastewater defluorination agent flocculation and precipitation device according to claim 1, characterized in that: The upper surface of the filter screen (9) is inclined, the sedimentation cleaning pipe (10) is connected to the second cavity (3), and the opening of the sedimentation cleaning pipe (10) is located on the side of the filter screen (9) with a lower height.

5. The coal chemical vaporization wastewater defluorination agent flocculation and precipitation device according to claim 1, characterized in that: The linkage drainage mechanism includes an electric push rod (11), which is embedded in the inner wall of the second cavity (3). The output end of the electric push rod (11) is fixedly connected to a wastewater baffle (12), and the surface of the wastewater baffle (12) is provided with a second filter hole (14).

6. The flocculation and sedimentation device for defluorinating coal chemical gasification wastewater according to claim 5, characterized in that: The width of the wastewater baffle (12) is the same as the width of the mixing blade (8), and the wastewater baffle (12) is slidably connected to the second cavity (3) and the protective shell (1).

7. The coal chemical vaporization wastewater defluorination agent flocculation and precipitation device according to claim 5, characterized in that: The second filter hole (14) is a long strip design, and the width of the second filter hole (14) is greater than the width of the first filter hole (13), and the second filter hole (14) and the first filter hole (13) are misaligned.

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