CN115594180A - Waste activated carbon regeneration treatment system and method - Google Patents
Waste activated carbon regeneration treatment system and method Download PDFInfo
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- CN115594180A CN115594180A CN202211318980.0A CN202211318980A CN115594180A CN 115594180 A CN115594180 A CN 115594180A CN 202211318980 A CN202211318980 A CN 202211318980A CN 115594180 A CN115594180 A CN 115594180A
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- activated carbon
- waste activated
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- granulator
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/39—Apparatus for the preparation thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
- C01B32/36—Reactivation or regeneration
Abstract
The invention relates to a system and a method for regenerating and treating waste activated carbon, wherein the system comprises: the raw material storehouse is used for temporarily storing the waste active carbon and volatilizing odor pollutants in the waste active carbon; the granulator is used for granulating the waste activated carbon to obtain granular waste activated carbon; an activation kiln, which is used for activating the granular waste activated carbon; and the cooling device is used for cooling the activated granular waste activated carbon and discharging the cooled granular waste activated carbon. The technical scheme of the invention can effectively regenerate the waste active carbon, and realize the recycling of the waste active carbon after the waste active carbon is re-granulated and activated.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a system and a method for regenerating and treating waste activated carbon.
Background
The activated carbon is a functional carbon material with super-strong adsorption capacity, has a special microcrystalline structure, developed pores and a huge specific surface area, is used as an excellent adsorbent, has double characteristics of physical adsorption and chemical adsorption, can selectively adsorb various substances in a liquid phase and a gas phase so as to achieve the purposes of decoloring, refining, sterilizing, deodorizing, decontaminating, purifying and the like, and is widely applied to the aspects of production and life such as food, beverage, medicine, water treatment, gas purification and recovery and the like. In recent years, with the continuous development of economy and the gradual improvement of living standard of people, people put higher requirements on living environments such as food, medicine, drinking water safety, ecological protection and the like, and the market demand of activated carbon is continuously expanded.
In the prior art, waste activated carbon used in chemical industry, environmental protection industry and the like is used as hazardous waste management, 13 types (except waste activated carbon related to heavy metal pollution) such as HW02, HW04, HW05, HW06, HW08, HW11, HW13, HW18, HW37, HW39, HW40, HW45, HW49 and the like are related to national hazardous waste records (2016), and the waste activated carbon is mainly from processes such as adsorption decoloration and purification treatment in organic chemical synthesis of industrial enterprises, adsorption decoloration and adsorption separation of toxic pollutants in industrial wastewater, advanced treatment of sewage, adsorption purification treatment of organic waste gas and the like. Activated carbon is a commodity with high value, at present, waste activated carbon as hazardous waste is generally treated by adopting incineration-solidification-safe landfill technology, so that the cost is high, the resource waste is caused, in addition, in the present enterprises, the waste activated carbon regeneration scale is small, the waste of a large amount of resources with high added values is caused, and a waste activated carbon regeneration treatment method is urgently needed.
Disclosure of Invention
The invention provides a waste active carbon regeneration treatment system and method, aiming at solving the problems of high treatment difficulty and pollution waste of waste active carbon.
In a first aspect, the invention provides a method for regenerating and treating waste activated carbon, which adopts the following technical scheme:
a waste activated carbon regeneration treatment method comprises the following steps:
temporarily storing the waste activated carbon by using a raw material storehouse and volatilizing odor pollutants in the waste activated carbon;
granulating the waste activated carbon by using a granulator to obtain granular waste activated carbon;
activating the granular waste activated carbon by using an activation kiln;
and cooling the activated granular waste activated carbon by using a cooling device and discharging.
Preferably, the method also comprises the step of recovering the odor pollutants volatilized by the waste activated carbon by using a warehouse waste gas collection system.
Preferably, the method further comprises washing the waste activated carbon by a wet method before the waste activated carbon enters the granulator after the malodorous pollutants volatilize.
Preferably, the waste activated carbon is washed by a wet method and then conveyed to a granulator through an automatic conveyor.
Preferably, the granulator carries out granulation treatment on the waste activated carbon, and then generated tail gas is adsorbed and treated by the activated carbon.
Preferably, the activation kiln carries out activation treatment on the granular waste activated carbon, and comprises a drying step, a carbonization step and an activation step.
Preferably, the drying step comprises heating the granular waste activated carbon at a temperature of 100-150 ℃ to gasify and separate water and low-boiling point organic matters adsorbed in the granular waste activated carbon.
Preferably, the carbonization step comprises gradually heating the dried granular waste activated carbon to 700 ℃.
Preferably, the activating step includes converting the residual tungsten carbide in the granular waste activated carbon into gas by using a gasification reaction of an activating agent.
In a second aspect, a waste activated carbon regeneration treatment system adopts the following technical scheme:
a spent activated carbon regeneration treatment system comprising:
the raw material storehouse is used for temporarily storing the waste activated carbon and volatilizing odor pollutants in the waste activated carbon;
the granulator is used for granulating the waste activated carbon to obtain granular waste activated carbon;
an activation kiln, which is used for activating the granular waste activated carbon;
and the cooling device is used for cooling the activated granular waste activated carbon and discharging the granular waste activated carbon.
In summary, the invention has the following beneficial technical effects:
the technical scheme of the invention can effectively regenerate the waste active carbon, and realize the recycling of the waste active carbon after the waste active carbon is re-granulated and activated.
The invention aims at that the tail gas generated in the treatment process is not polluted any more after being collected and treated, and simultaneously the heat generated by burning the tail gas can be recycled in the activation process, thereby integrally realizing the full recycling of industrial polluted salt, having high recycling rate and not causing pollution and waste.
Drawings
FIG. 1 is a schematic flow chart of a method for regenerating and treating waste activated carbon according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the method for recycling waste activated carbon according to this embodiment includes:
temporarily storing the waste activated carbon by using a raw material storehouse and volatilizing odor pollutants in the waste activated carbon; granulating the waste activated carbon by using a granulator to obtain granular waste activated carbon; activating the granular waste activated carbon by using an activation kiln; and cooling the activated granular waste activated carbon by using a cooling device and discharging. Still include to utilize warehouse exhaust gas collection system to retrieve the volatile foul smell pollutant of useless active carbon. And the waste activated carbon is washed by a wet method before entering a granulator after the odor pollutants are volatilized. And after being washed by a wet method, the waste activated carbon is conveyed into a granulator through an automatic conveyor. And after the granulator performs granulation treatment on the waste activated carbon, the generated tail gas is subjected to adsorption treatment by the activated carbon. The activation kiln carries out activation treatment on the granular waste activated carbon, and comprises a drying step, a carbonization step and an activation step. The drying step comprises heating the granular waste activated carbon at 100-150 ℃ to gasify and separate water and low-boiling-point organic matters adsorbed in the granular waste activated carbon; and the carbonization step comprises gradually heating the dried granular waste activated carbon to 700 ℃. And the activation step comprises the step of converting residual tungsten carbide in the granular waste activated carbon into gas by using the gasification reaction of the activating agent.
As a further embodiment of the method of the present invention,
the useless active carbon raw materials of this embodiment is about its storage, inspection, bale breaking, and the useless active carbon of purchasing is through arranging in totally enclosed, little negative pressure operating condition after the inspection is qualified in the raw materials storehouse and temporarily store, and the process of temporarily storing gives off partial foul smell pollutant, through wet process washing, active carbon adsorption device purification treatment promptly after collecting through warehouse exhaust gas collection system.
And (4) granulating and feeding. And (3) manually unpacking the waste activated carbon in a unpacking room by using a forklift, conveying the waste activated carbon to a granulator by using an automatic conveyor to form granular activated carbon, and conveying the granular activated carbon to an activation kiln for activation treatment. The whole process is operated in a closed system, and the tail gas is collected and then is adsorbed by active carbon.
And (4) activating waste activated carbon. The drying, carbonization and activation of the waste activated carbon are all completed in a closed kiln operated under micro negative pressure, and the activation process is divided into three stages: the activation kiln utilizes natural gas combustion as a heat source, tail gas generated by the activation kiln is subjected to delay treatment after being burned, the tail gas is discharged after being qualified, waste heat recovery is also performed after the tail gas is burned, and the recovered waste heat is also used in the drying step.
And (3) a drying stage: heating the waste activated carbon with the water content of about 50% at the temperature of 100-150 ℃ to gasify and separate water and low-boiling-point organic matters adsorbed in the carbon particles;
and (3) carbonization: the temperature of the dried waste activated carbon is gradually raised to 700 ℃ in a carbonization section of the activation kiln, and different organic pollutants are eliminated from the matrix of the activated carbon in the forms of volatilization, cracking, carbonization, oxidation and the like along with the rise of the temperature. Through the stage, the recovery rate of the adsorption capacity of the regenerated waste activated carbon reaches 60-85 percent;
and (3) an activation stage: organic matter is carbonized at high temperature, partial carbide remains in the micropores of the activated carbon, and the residual carbide is further converted into gases such as carbon dioxide, carbon monoxide and the like at about 850 ℃ by utilizing the gasification reaction of an activating agent (steam and water), so that the surfaces of the micropores of the activated carbon are cleaned, and the adsorption performance of the activated carbon is recovered.
The activated active carbon is discharged after indirect cooling, and the indirect cooling mode belongs to the prior art.
Example 2
This embodiment provides a useless activated carbon regeneration processing system, includes: the raw material storehouse is used for temporarily storing the waste activated carbon and volatilizing odor pollutants in the waste activated carbon; the granulator is used for granulating the waste activated carbon to obtain granular waste activated carbon; an activation kiln, which is used for activating the granular waste activated carbon; and the cooling device is used for cooling the activated granular waste activated carbon and discharging the granular waste activated carbon. Wherein the activation treatment sequentially comprises a drying step, a carbonization step and an activation step.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A method for regenerating and treating waste activated carbon is characterized by comprising the following steps:
temporarily storing the waste activated carbon by using a raw material storehouse and volatilizing odor pollutants in the waste activated carbon;
granulating the waste activated carbon by using a granulator to obtain granular waste activated carbon;
activating the granular waste activated carbon by using an activation kiln;
and cooling the activated granular waste activated carbon by using a cooling device and discharging.
2. A method as claimed in claim 1, further comprising recovering malodorous contaminants volatilized from the spent activated carbon using a warehouse waste gas collection system.
3. A method as claimed in claim 2, further comprising washing the waste activated carbon by a wet process after volatilization of malodorous contaminants before entering a granulator.
4. A waste activated carbon recycling method as set forth in claim 3, characterized in that the waste activated carbon is carried to a granulator by an automatic conveyor after being washed by a wet process.
5. A waste activated carbon regeneration treatment method as claimed in claim 4, characterized in that the tail gas generated after the waste activated carbon is granulated by the granulator is treated by activated carbon adsorption.
6. A waste activated carbon regeneration treatment method as set forth in claim 5, characterized in that the activation kiln performs activation treatment of the granular waste activated carbon including a drying step, a carbonization step and an activation step.
7. A waste activated carbon regeneration treatment method as claimed in claim 6, wherein the drying step comprises heating the granular waste activated carbon at a temperature of 100-150 ℃ to gasify and separate water and low boiling point organic matters adsorbed in the granular waste activated carbon.
8. A waste activated carbon regeneration treatment method as claimed in claim 7, wherein the carbonization step includes gradually heating the dried granular waste activated carbon up to 700 ℃.
9. A waste activated carbon regeneration treatment method as claimed in claim 8, wherein the activation step comprises converting the residual tungsten carbide in the granular waste activated carbon into a gas by a gasification reaction of an activating agent.
10. A useless activated carbon regeneration processing system, its characterized in that includes:
the raw material storehouse is used for temporarily storing the waste activated carbon and volatilizing odor pollutants in the waste activated carbon;
the granulator is used for granulating the waste activated carbon to obtain granular waste activated carbon;
an activation kiln, which is used for activating the granular waste activated carbon;
and the cooling device is used for cooling the activated granular waste activated carbon and discharging the cooled granular waste activated carbon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211318980.0A CN115594180A (en) | 2022-10-26 | 2022-10-26 | Waste activated carbon regeneration treatment system and method |
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| CN202211318980.0A CN115594180A (en) | 2022-10-26 | 2022-10-26 | Waste activated carbon regeneration treatment system and method |
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Citations (5)
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|---|---|---|---|---|
| WO2011091090A2 (en) * | 2010-01-19 | 2011-07-28 | Zeropoint Clean Tech, Inc. | A process to sequester carbon, mercury, and other chemicals |
| CN108455605A (en) * | 2018-01-25 | 2018-08-28 | 江苏齐清环保设备有限公司 | A kind of waste active carbon activating and regenerating treatment process |
| CN111889089A (en) * | 2020-05-12 | 2020-11-06 | 天津天一爱拓科技有限公司 | System and method for regenerating waste activated carbon |
| CN112569916A (en) * | 2020-11-13 | 2021-03-30 | 长沙工研院环保有限公司 | Method for regenerating waste active carbon |
| CN217043953U (en) * | 2021-12-30 | 2022-07-26 | 山东嘉柏广源环保科技有限公司 | Agricultural and forestry waste recycling device |
-
2022
- 2022-10-26 CN CN202211318980.0A patent/CN115594180A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011091090A2 (en) * | 2010-01-19 | 2011-07-28 | Zeropoint Clean Tech, Inc. | A process to sequester carbon, mercury, and other chemicals |
| CN108455605A (en) * | 2018-01-25 | 2018-08-28 | 江苏齐清环保设备有限公司 | A kind of waste active carbon activating and regenerating treatment process |
| CN111889089A (en) * | 2020-05-12 | 2020-11-06 | 天津天一爱拓科技有限公司 | System and method for regenerating waste activated carbon |
| CN112569916A (en) * | 2020-11-13 | 2021-03-30 | 长沙工研院环保有限公司 | Method for regenerating waste active carbon |
| CN217043953U (en) * | 2021-12-30 | 2022-07-26 | 山东嘉柏广源环保科技有限公司 | Agricultural and forestry waste recycling device |
Non-Patent Citations (1)
| Title |
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| 李宝华: "危废活性炭热再生及其废气处理技术研究与应用", 海峡科学, no. 4, pages 16 - 17 * |
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