Activated carbon waste residue boric acid recovery and dehydration drying device

Abstract

The utility model belongs to the technical field of boric acid recovery, and discloses an activated carbon waste residue boric acid recovery and dehydration drying device which comprises a conveying device, a recovery drying device is arranged below the conveying device, heating sleeves are evenly arranged on the inner wall of the recovery drying device, and the lower end of one side of the recovery drying device is communicated with a water inlet valve in a penetrating mode. A stirring device penetrates through the center of one side of the recycling and drying device, the upper end of the recycling and drying device is connected with a cover plate in a clamped mode, the upper end of the cover plate is communicated with an air outlet valve in a penetrating mode, the lower end of the other side of the recycling and drying device is communicated with a water outlet valve in a penetrating mode, and a filter screen is fixedly connected to the inner wall of the water outlet valve; the boric acid can be recycled from the activated carbon waste residues, and the recycling efficiency is improved; the recycling, dehydrating and drying processes are integrated in one device, so that the occupied area and the operation complexity of equipment are reduced; advanced dehydration and drying technologies are adopted, energy consumption is reduced, and the influence on the environment is reduced.

Description

Technical Field

[0001] This application relates to the field of boric acid recovery technology, and more specifically, to a device for boric acid recovery and dehydration drying of activated carbon waste. Background Technology

[0002] With the rapid development of industry, activated carbon has been widely used in many fields, such as chemical, environmental protection, and food. However, if the waste residue generated after using activated carbon is not properly treated, it will not only pollute the environment but also waste any potentially valuable substances it contains.

[0003] Activated carbon is added during the impurity removal process in production for impurity removal and decolorization. The waste residue is trapped in the plate and frame. In addition to activated carbon and impurities, the trapped residue also contains moisture and adsorbed boric acid. If the adsorbed boric acid cannot be effectively recovered, it will waste the effective components and increase the company's production costs. At the same time, the discharge of high boron waste residue will pollute the environment. Hazardous waste disposal is charged by weight. Therefore, recovering boric acid and reducing moisture not only increases the product yield but also effectively reduces the amount of residue produced, thereby reducing hazardous waste disposal costs. Due to the control of boron content, the discharged waste residue can be considered for use as boron fertilizer in the future, turning waste into treasure, increasing economic benefits for the company and having certain social benefits. Existing recovery devices have problems such as low recovery efficiency, insufficient dehydration, poor equipment stability, high energy consumption, complex operation, and substandard exhaust gas treatment.

[0004] To address the aforementioned issues, this application provides a device for recovering and dehydrating boric acid from activated carbon waste. Utility Model Content

[0005] The activated carbon waste boric acid recovery and dehydration drying device provided in this application adopts the following technical solution:

[0006] A device for recovering and dehydrating boric acid from activated carbon waste includes a conveying device, a crushing device above the conveying device, a recovery and drying device below the conveying device, heating jackets evenly arranged on the inner wall of the recovery and drying device, a water inlet valve penetrating through the lower end of one side of the recovery and drying device, a stirring device penetrating through the center of one side of the recovery and drying device, a cover plate engaging with the upper end of the recovery and drying device, an air outlet valve penetrating through the upper end of the cover plate, a water outlet valve penetrating through the lower end of the other side of the recovery and drying device, a filter screen fixedly connected to the inner wall of the water outlet valve, the filter screen being located on the inner wall of the recovery and drying device, and a discharge device penetrating through the lower end of the recovery and drying device.

[0007] Furthermore, the stirring device includes a motor fixedly connected to the outside of the recycling and drying device. The output end of the motor is fixedly connected to a stirring element. The stirring element passes through the side wall of the recycling and drying device. Blades are provided on the outer surface of the stirring element. The blades are located inside the recycling and drying device. Scrapers are attached to the outer side of the blades.

[0008] The above technical solution uses a scraper attached to the outside of the blade to ensure that thorough mixing can still be achieved even when the moisture content is extremely low.

[0009] Furthermore, the hot water inside the heating jacket is workshop thermal circulation wastewater, and the cover plate and the recycling and drying device are detachably connected.

[0010] Through the above technical solution, the hot water in the heating jacket is used to ensure full utilization of energy, the cover plate facilitates internal cleaning and daily maintenance, and the connection between the cover plate and the recycling and drying device ensures the overall airtightness of the device, so that pressure will not leak during filtration.

[0011] Furthermore, the ratio of activated carbon waste residue to pure water inside the recovery and drying device is 1:1 for slurry preparation and washing, and the ratio of activated carbon waste residue:pure water:mother liquor inside the recovery and drying device is 1:0.5:0.5 for slurry preparation and washing.

[0012] The above technical solutions utilize different ratios of activated carbon waste residue, pure water, and mother liquor to improve economic efficiency.

[0013] Furthermore, the exhaust valve is connected to the steam recovery pipeline, the filter screen can be designed as multi-stage, and the filter screen can be made of stainless steel.

[0014] Through the above technical solution, the connection between the exhaust valve and the steam recovery pipeline is used for reheating the system, reducing heat loss. The filter screen material has high strength and corrosion resistance, and the filter screen design makes it easy to clean and replace.

[0015] Furthermore, the solid-liquid separation in the recovery and drying device can be further separated by adding a pressure filter device, and the recovery and drying device can also include liquid level and pressure sensors.

[0016] The above technical solutions enable remote monitoring of equipment by adding level and pressure sensors.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] This application can effectively recover boric acid from activated carbon waste, improving recovery efficiency; it integrates the recovery, dehydration and drying processes into one device, reducing equipment footprint and operational complexity; and it adopts advanced dehydration and drying technologies, reducing energy consumption and environmental impact. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application.

[0020] Explanation of the labels in the diagram:

[0021] 1. Conveying device; 2. Recycling and drying device; 21. Water inlet valve; 22. Stirring device; 23. Heating jacket; 24. Cover plate; 25. Air outlet valve; 26. Filter screen; 27. Water outlet valve; 28. Discharge device. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Example:

[0026] This application discloses an apparatus for recovering and dehydrating boric acid from activated carbon waste. Please refer to [link to relevant documentation]. Figure 1The device includes a conveying device 1, a crushing device above the conveying device 1, a recycling and drying device 2 below the conveying device 1, heating jackets 23 evenly arranged on the inner wall of the recycling and drying device 2, a water inlet valve 21 penetrating through the lower end of one side of the recycling and drying device 2, a stirring device 22 penetrating through the center of one side of the recycling and drying device 2, a cover plate 24 engaging with the upper end of the recycling and drying device 2, an air outlet valve 25 penetrating through the upper end of the cover plate 24, a water outlet valve 27 penetrating through the lower end of the other side of the recycling and drying device 2, a filter screen 26 fixedly connected to the inner wall of the water outlet valve 27, the filter screen 26 being located on the inner wall of the recycling and drying device 2, and a discharge device 28 penetrating through the lower end of the recycling and drying device 2.

[0027] The stirring device 22 includes a motor fixedly connected to the outside of the recycling and drying device 2. The output end of the motor is fixedly connected to a stirring element. The stirring element passes through the side wall of the recycling and drying device 2. Blades are provided on the outer surface of the stirring element. The blades are located inside the recycling and drying device 2. Scrapers are attached to the outer side of the blades.

[0028] The scraper attached to the outside of the blades is used to ensure that thorough mixing can still be achieved even when the moisture content is extremely low.

[0029] The hot water inside the heating jacket 23 is the workshop's hot circulating wastewater, and the cover plate 24 is detachably connected to the recovery and drying device 2.

[0030] The hot water inside the heating jacket 23 is used to ensure full utilization of energy. The presence of the cover plate 24 facilitates internal cleaning and daily maintenance of the cover plate 24. The connection between the cover plate 24 and the recovery drying device 2 ensures the overall airtightness of the device, preventing pressure leakage during filtration.

[0031] The ratio of activated carbon waste residue to pure water inside the recovery and drying device 2 is 1:1, which can be used for slurry preparation and washing. The ratio of activated carbon waste residue: pure water: mother liquor inside the recovery and drying device 2 is 1:0.5:0.5, which can also be used for slurry preparation and washing.

[0032] Different ratios of activated carbon waste residue with pure water and mother liquor are used to improve economic efficiency.

[0033] The exhaust valve 25 is connected to the steam recovery pipeline, and the filter screen 26 can be designed as multi-stage and can be made of stainless steel.

[0034] The connection between the exhaust valve 25 and the steam recovery pipe is used for reheating the system and reducing heat loss. The filter screen 26 is made of a material with high strength and corrosion resistance, and its design makes it easy to clean and replace.

[0035] The solid-liquid separation in the recovery and drying device 2 can be further separated by adding a pressure filter device, and liquid level and pressure sensors can be added to the recovery and drying device 2.

[0036] The addition of level and pressure sensors enables remote monitoring of the equipment.

[0037] The implementation principle of this embodiment is as follows: First, activated carbon is crushed into activated carbon waste through a crushing device. Then, the activated carbon waste enters the recycling and drying device 2 through the conveying device 1. At this time, an appropriate amount of water and mother liquor can be added into the recycling and drying device 2 through the water inlet valve 21 to mix it with the activated carbon waste. Then, the mixture is stirred by the stirring device 22. When the liquid level of the mixture reaches the set value, the heating jacket 23 and the air outlet valve 25 can be opened to heat the mixture. When the liquid level reaches 1 / 3 of the set value, the air outlet valve 25 is finely adjusted to maintain a maximum pressure of 0.05 MPa in the recycling and drying device 2. The water outlet valve 27 is then opened to filter the mixture through the positive pressure in the recycling and drying device 2. During this process, the mixture is continuously heated and stirred until the pressure in the recycling and drying device 2 no longer changes. The staff can clean or replace the filter screen 26 regularly to ensure the filtration effect. A reasonable cleaning or replacement cycle can be formulated according to the properties of the solution and the usage of the filter screen 26.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for recovering and dehydrating boric acid from activated carbon waste, comprising a conveying device (1), characterized in that: A crushing device is provided above the conveying device (1), and a recycling drying device (2) is provided below the conveying device (1). A heating jacket (23) is evenly arranged on the inner wall of the recycling drying device (2). A water inlet valve (21) is connected through the lower end of one side of the recycling drying device (2). A stirring device (22) is connected through the center of one side of the recycling drying device (2). A cover plate (24) is snapped onto the upper end of the recycling drying device (2). An air outlet valve (25) is connected through the upper end of the cover plate (24). A water outlet valve (27) is connected through the lower end of the other side of the recycling drying device (2). A filter screen (26) is fixedly connected to the inner wall of the water outlet valve (27). The filter screen (26) is located on the inner wall of the recycling drying device (2). A discharge device (28) is connected through the lower end of the recycling drying device (2).

2. The activated carbon waste boric acid recovery and dehydration drying device according to claim 1, characterized in that: The stirring device (22) includes a motor fixedly connected to the outside of the recycling drying device (2). The output end of the motor is fixedly connected to a stirring element. The stirring element passes through the side wall of the recycling drying device (2). Blades are provided on the outer surface of the stirring element. The blades are located inside the recycling drying device (2). A scraper is attached to the outer side of the blades.

3. The activated carbon waste boric acid recovery and dehydration drying device according to claim 1, characterized in that: The hot water inside the heating jacket (23) is the workshop's hot circulating wastewater, and the cover plate (24) is detachably connected to the recycling and drying device (2).

4. The activated carbon waste boric acid recovery and dehydration drying device according to claim 1, characterized in that: The ratio of activated carbon waste residue to pure water inside the recycling drying device (2) is 1:1, which can be used for slurry preparation and washing. The ratio of activated carbon waste residue: pure water: mother liquor inside the recycling drying device (2) is 1:0.5:0.5, which can also be used for slurry preparation and washing.

5. The activated carbon waste boric acid recovery and dehydration drying device according to claim 1, characterized in that: The exhaust valve (25) is connected to the steam recovery pipeline, the filter screen (26) can be designed as multi-stage, and the filter screen (26) can be made of stainless steel.

6. The activated carbon waste boric acid recovery and dehydration drying device according to claim 1, characterized in that: The solid-liquid process in the recovery drying device (2) can be further separated by adding a pressure filter device, and the recovery drying device (2) can be equipped with liquid level and pressure sensors.

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