CN216704404U - Powdered activated carbon regeneration system - Google Patents
Powdered activated carbon regeneration system Download PDFInfo
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- CN216704404U CN216704404U CN202123380791.XU CN202123380791U CN216704404U CN 216704404 U CN216704404 U CN 216704404U CN 202123380791 U CN202123380791 U CN 202123380791U CN 216704404 U CN216704404 U CN 216704404U
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Abstract
A powdered activated carbon regeneration system, comprising: the wet oxidation regeneration unit comprises an oxygen storage tank, a waste carbon slurry blending tank, a wet oxidation reaction device and a first heat exchanger, wherein the oxygen storage tank is connected with the wet oxidation reaction device; the carbon-water separation unit comprises a second heat exchanger, a carbon-water separation device and a drying device, the other discharge end of the first heat exchanger is connected with the carbon-water separation device through the second heat exchanger, and the discharge end of the carbon-water separation device is connected with the drying device; the waste water treatment unit is connected with the liquid outlet end of the carbon-water separation device, and the waste gas treatment unit is connected with the gas outlet end of the carbon-water separation device. The regeneration system can efficiently regenerate the powdered activated carbon, realize the cyclic utilization of the powdered activated carbon and effectively treat waste gas and waste water generated by wet oxidation regeneration reaction.
Description
Technical Field
The utility model relates to the field of activated carbon regeneration, in particular to a powdered activated carbon regeneration system.
Background
The internal pore structure of the powdered activated carbon is developed, and the specific surface area can reach 800-1200 m generally2Has strong adsorption capacity, stable chemical property and higher mechanical strength, and can be regenerated after losing the adsorption performance. The powdered activated carbon has good removal effect on organic pollutants and some inorganic pollutants in water, and is widely applied to drinking water, domestic sewage and industrial wastewater treatment. The waste activated carbon is treated as solid waste, so that not only is certain cost required to be invested, but also secondary pollution is caused if the waste activated carbon is not treated properly. Therefore, the regeneration treatment of the waste activated carbon has important environmental and economic benefits.
Therefore, there is a need to design a powdered activated carbon regeneration system to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
In order to avoid the problem, a powdered activated carbon regeneration system is provided, which can effectively solve the problems of difficult powdered activated carbon regeneration, high use cost and resource waste caused by directly discarding waste carbon.
The utility model provides a powdered activated carbon regeneration system, which comprises: the system comprises a wet oxidation regeneration unit, a carbon-water separation unit, a wastewater treatment unit and a waste gas treatment unit; the wet oxidation regeneration unit comprises an oxygen storage tank, a waste carbon slurry blending tank, a wet oxidation reaction device and a first heat exchanger, wherein the oxygen storage tank is connected with the wet oxidation reaction device; the carbon-water separation unit comprises a second heat exchanger, a carbon-water separation device and a drying device, wherein a second discharge end of the first heat exchanger is connected with the carbon-water separation device through the second heat exchanger, and a discharge end of the carbon-water separation device is connected with the drying device; the waste water treatment unit is connected with the liquid outlet end of the carbon-water separation device, and the waste gas treatment unit is connected with the gas outlet end of the carbon-water separation device.
Preferably, the oxygen storage tank is connected with the wet oxidation reaction device through an oxygen supercharging device, and the waste carbon slurry blending tank is connected with the first feeding end of the first heat exchanger through a waste carbon slurry supercharging pump. Oxygen is pressurized by the oxygen pressurizing device and then enters the wet oxidation reaction device through the pipeline,
preferably, the delivery flow rate and pressure of the oxygen booster device and the waste carbon slurry booster pump are adjustable.
Preferably, the waste carbon slurry blending tank is connected with the waste carbon slurry storage tank. The waste carbon pulp in the waste carbon pulp storage tank enters a waste carbon pulp blending tank through a pipeline, water is supplied to the carbon pulp blending tank through the pipeline, the waste carbon pulp is blended into proper concentration, and then the waste carbon pulp is conveyed into a first heat exchanger for preheating through the pipeline after being pressurized by a waste carbon pulp booster pump. The preheated waste carbon slurry is conveyed to a feed inlet of the wet oxidation reaction device through a pipeline, the high-temperature gas-solid material after the reaction of the wet oxidation reaction device enters a first heat exchanger through a pipeline, and the gas-solid material after the heat exchange of the first heat exchanger enters a second heat exchanger through a pipeline.
Preferably, the air inlet end of the second heat exchanger is connected with an air filtering device.
Preferably, the carbon-water separation device is arranged in the closed board room.
Preferably, the wastewater treatment unit comprises an advanced oxidation reaction tank and a biochemical reaction tank, and the liquid outlet end of the solid-liquid separation device is sequentially connected with the advanced oxidation reaction tank and the biochemical reaction tank. The wastewater generated by the solid-liquid separation device enters an advanced oxidation reaction tank through a pipeline, and the effluent of the advanced oxidation reaction tank enters a biochemical reaction tank through a pipeline. One part of the effluent of the biochemical reaction tank is discharged or reflows to the pipeline after reaching the standard through the pipeline, the other part of the effluent enters a subsequent spray absorption device through the pipeline, and the waste water generated by the waste gas absorbed by the spray absorption device enters the advanced oxidation reaction tank through the pipeline.
Preferably, the waste gas treatment unit comprises a negative pressure air exhaust device and a spraying absorption device, and the air outlet end of the solid-liquid separation device is sequentially connected with the negative pressure air exhaust device and the spraying absorption device. Under the action of the negative pressure air extractor, air enters the second heat exchanger from the air filter to be heated, then enters the closed board room through the pipeline, and hot air flow takes away moisture of wet carbon in the solid-liquid separation device. The waste gas generated under the action of the negative pressure air extractor enters the spraying absorption device through a pipeline to be treated and discharged through an outlet after reaching the standard.
Preferably, the wet oxidation reaction device is filled with a catalyst, and the catalyst is a noble metal and rare earth composite catalyst or a high-temperature-resistant and corrosion-resistant particle composite catalyst.
Preferably, the wet oxidation reaction device is filled with a plurality of layers of granular catalysts with different particle diameters, each layer is provided with a filter hole partition plate for intercepting the granular catalysts, and the filter hole partition plates do not intercept the regenerated carbon slurry.
The heating method of the wet oxidation reaction device is preferably electric heating, electromagnetic induction heating, or steam heating. The solid-liquid separation device is preferably a plate-and-frame filter press with a large filtering area, the regenerated wet carbon is dried by fully utilizing the recovered heat under the flow of hot air introduced into the closed plate house, and then the quality requirement of the finished product regenerated powdered activated carbon is met under the action of the drying device.
Compared with the prior art, the utility model has the following beneficial effects: (1) the waste wet carbon is not required to be dried, and the wet carbon is directly regenerated, so that the energy consumed by drying can be saved, and occupational disease hazards caused by dust can be avoided; (2) preheating the waste carbon slurry to be regenerated by utilizing the heat carried by the high-temperature gas-solid material after the regeneration reaction of the wet oxidation reaction device; (3) in order to further fully utilize the heat carried by the high-temperature gas-solid material, secondary heat exchange is carried out to heat air, and the dehydrated waste wet carbon on a solid-liquid separation device in a closed board house is dried under the condition of low-speed hot airflow so as to save the energy consumption of a subsequent drying device; (4) waste water and waste gas generated by regeneration of waste powdered activated carbon are treated to reach the standard, the treated waste water reaching the standard can be recycled to prepare waste carbon slurry, and water consumption can be effectively saved in water resource deficient areas.
Drawings
FIG. 1 is a schematic structural diagram of a powdered activated carbon regeneration system according to a preferred embodiment of the present invention;
detailed description of the embodiments reference is made to the accompanying drawings in which:
1. a waste carbon slurry storage tank; 2. an oxygen storage tank; 3. an oxygen pressurizing device; 4. a wet oxidation reaction device; 5. closing the board room; 6. a carbon-water separation device; 7. an advanced oxidation reaction tank; 8. a biochemical reaction tank; 9. a waste carbon pulp blending tank; 10. a waste carbon slurry booster pump; 11. a first heat exchanger; 12. an air filtration device; 13. a second heat exchanger; 14. a drying device; 15. a negative pressure air extraction device; 16. and (4) a spraying and absorbing device.
Detailed Description
The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The powdered activated carbon regeneration system shown in figure 1 comprises a wet oxidation regeneration unit, a carbon-water separation unit, a wastewater treatment unit and an exhaust gas treatment unit. The wet oxidation regeneration unit comprises an oxygen storage tank 2, an oxygen supercharging device 3, a waste carbon slurry storage tank 1, a waste carbon slurry blending tank 9, a waste carbon slurry supercharging pump 10, a wet oxidation reaction device 4 and a first heat exchanger 11. The carbon-water separation unit comprises a second heat exchanger 13, a carbon-water separation device 6 and a drying device 14. The wastewater treatment unit comprises an advanced oxidation reaction tank 7 and a biochemical reaction tank 8. The waste gas treatment unit comprises an air filtering device 12, a negative pressure air extraction device 15 and a spraying absorption device 16.
The waste carbon slurry is stored in the waste carbon slurry storage tank 1, and the waste carbon slurry and water are respectively conveyed to the waste carbon slurry blending tank 9 through pipelines and are fully and uniformly mixed to be prepared into carbon slurry concentration suitable for wet oxidation regeneration. Then, the waste carbon is pressurized by a waste carbon booster pump and flows into the first heat exchanger 11 to be preheated, and then enters the wet oxidation device. Oxygen in the oxygen storage tank 2 is pressurized by the oxygen pressurizing device 3 and enters the wet oxidation device, and is mixed with carbon slurry in the device and heated to reach the regeneration temperature, and then a wet oxidation regeneration reaction is carried out.
The high-temperature gas-solid material after the regeneration reaction enters the first heat exchanger 11 to preheat the waste carbon slurry which is about to enter the wet oxidation device. The gas-solid materials after heat exchange enter a second heat exchanger 13 for further heat exchange, then enter a carbon-water separation device 6 arranged in the closed board room 5, and the separated regenerated carbon enters a drying device 14 for drying treatment.
Under the action of the negative pressure air extractor 15, the air is processed by the air filter 12 and then enters the second heat exchanger 13 for heating. Hot air flow enters the closed board house 5 to blow dry the dehydrated regenerated wet carbon on the carbon-water separation device 6, and generated waste gas enters the spray absorption device 16 to be purified. The wet carbon dried by hot air flow enters a heating device for further treatment to meet the water content quality requirement of the finished regenerated carbon.
The wastewater generated by the carbon-water separation device 6 enters an advanced oxidation tank, the Fenton oxidation technology adopted by the advanced oxidation reaction tank 7 is that ferrous sulfate and hydrogen peroxide are added into the reaction tank, the effluent of the advanced oxidation tank enters a biochemical reaction tank 8, and A adopted by a biochemical method2The O technology is also provided with a sedimentation tank.
The spraying and absorbing device 16 adopts the effluent of the biochemical reaction tank 8, the waste water generated after the spraying and absorbing device 16 absorbs the waste gas enters the advanced oxidation tank for treatment, the effluent of the redundant biochemical reaction tank 8 can reach the standard and be discharged, and the waste carbon slurry can also enter the waste carbon slurry blending tank 9 for waste carbon slurry configuration.
Example two
The same parts as example one are not more cumbersome, except that:
the wet oxidation reaction device 4 is filled with a catalyst, the wet oxidation reaction device is improved into a catalytic wet oxidation reaction device 4, the catalyst is a Ce-Cu composite catalyst, and heat-resistant and pressure-resistant particle composite catalysts with different particle sizes are filled in 3 layers.
An ultraviolet catalytic oxidation device is additionally arranged in front of the spray absorption device 16 to carry out advanced oxidation treatment on organic matters in the waste gas, and then the waste gas enters the spray absorption device 16. Meanwhile, the advanced oxidation reaction tank 7 adopts an ozone oxidation technology. The biochemical reaction tank 8 adopts an MBR tank.
The regeneration system can efficiently regenerate the powdered activated carbon, so that the powdered activated carbon can be recycled, and simultaneously, the waste gas and the waste water generated by wet oxidation regeneration reaction can be effectively treated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A powdered activated carbon regeneration system, comprising: a wet oxidation regeneration unit, a carbon-water separation unit, a wastewater treatment unit and a waste gas treatment unit; the wet oxidation regeneration unit comprises an oxygen storage tank, a waste carbon slurry blending tank, a wet oxidation reaction device and a first heat exchanger, wherein the oxygen storage tank is connected with the wet oxidation reaction device; the carbon-water separation unit comprises a second heat exchanger, a carbon-water separation device and a drying device, wherein a second discharge end of the first heat exchanger is connected with the carbon-water separation device through the second heat exchanger, and a discharge end of the carbon-water separation device is connected with the drying device; the waste water treatment unit is connected with the liquid outlet end of the carbon-water separation device, and the waste gas treatment unit is connected with the gas outlet end of the carbon-water separation device.
2. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the oxygen storage tank is connected with the wet oxidation reaction device through an oxygen supercharging device, and the waste carbon slurry blending tank is connected with the first feed end of the first heat exchanger through a waste carbon slurry supercharging pump.
3. The powdered activated carbon regeneration system as set forth in claim 2, wherein: the delivery flow and pressure of the oxygen supercharging device and the waste carbon slurry supercharging pump are adjustable.
4. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the waste carbon pulp blending tank is connected with the waste carbon pulp storage tank.
5. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the air inlet end of the second heat exchanger is connected with an air filtering device.
6. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the carbon-water separation device is arranged in the closed board room.
7. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the wastewater treatment unit comprises an advanced oxidation reaction tank and a biochemical reaction tank, and the liquid outlet end of the solid-liquid separation device is sequentially connected with the advanced oxidation reaction tank and the biochemical reaction tank.
8. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the waste gas treatment unit comprises a negative pressure air exhaust device and a spraying absorption device, and the air outlet end of the solid-liquid separation device is sequentially connected with the negative pressure air exhaust device and the spraying absorption device.
9. The powdered activated carbon regeneration system as set forth in claim 1, wherein: the wet oxidation reaction device is filled with a plurality of layers of granular catalysts with different grain diameters, each layer is provided with a filter hole clapboard for intercepting the granular catalysts, and the filter hole clapboards do not intercept the regenerated carbon slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123380791.XU CN216704404U (en) | 2021-12-30 | 2021-12-30 | Powdered activated carbon regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123380791.XU CN216704404U (en) | 2021-12-30 | 2021-12-30 | Powdered activated carbon regeneration system |
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| Publication Number | Publication Date |
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| CN216704404U true CN216704404U (en) | 2022-06-10 |
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| CN202123380791.XU Active CN216704404U (en) | 2021-12-30 | 2021-12-30 | Powdered activated carbon regeneration system |
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| CN (1) | CN216704404U (en) |
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2021
- 2021-12-30 CN CN202123380791.XU patent/CN216704404U/en active Active
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Denomination of utility model: A powder activated carbon regeneration system Effective date of registration: 20230628 Granted publication date: 20220610 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Junji Environmental Technology Co.,Ltd. Registration number: Y2023420000270 |