CN114293364A - Carbon fiber activation method and apparatus - Google Patents
Carbon fiber activation method and apparatus Download PDFInfo
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- CN114293364A CN114293364A CN202210107287.2A CN202210107287A CN114293364A CN 114293364 A CN114293364 A CN 114293364A CN 202210107287 A CN202210107287 A CN 202210107287A CN 114293364 A CN114293364 A CN 114293364A
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Abstract
The invention belongs to the technical field of activated carbon fiber production, and particularly relates to carbon fiber activation equipment and a method. It comprises A, dipping: sending the carbonized carbon fibers into an impregnation chamber through a conveying mechanism, wherein alkali liquor is filled in the impregnation chamber, and then sending the carbon fibers out of the impregnation chamber through the conveying mechanism; B. and (3) drying: the conveying mechanism conveys the carbon fibers to a drying cavity, and then the carbon fibers are dried by a drying device in the drying cavity to remove all moisture on the carbon fiber coiled material; C. and (3) activation: the dried carbon fiber output from the drying chamber enters an activation chamber, the inside of the activation chamber is in a sealed state, the inside of the activation chamber is filled with nitrogen, and D, washing: the activated carbon fiber coiled material enters a washing chamber for spraying and washing until the washing water is neutral; E. drying and forming: the washed activated carbon fiber coiled material enters a drying chamber to be dried before being collected, so that the environment is protected, the energy is saved, the isolated gas and the activating reagent can be effectively recycled, and the use is flexible.
Description
Technical Field
The invention belongs to the technical field of activated carbon fiber production, and particularly relates to a carbon fiber activation method and equipment.
Background
The activated carbon fiber is a third generation activated carbon material developed after powdered activated carbon and granular activated carbon, and the process of the activated carbon fiber is formed by combining a carbon fiber process and an activated carbon process. The activated carbon fiber takes low thermoplastic carbon fiber as an initial raw material, and after long-term high-temperature carbonization and activation, the fiber is fully distributed with micropores, so that the activated carbon fiber has the special advantages of large specific surface area, high adsorption speed, large capacity, high purification efficiency and the like compared with other materials, and is commonly used in the fields of organic solvent recovery, water treatment, atmospheric pollution treatment, air purification and the like. It also has excellent heat and electric conductivity, high temperature resistance, low thermal expansion and stable chemical performance, so that it may be used in electric adsorption and in making electrode material and capacitor. In general, activated carbon fibers are widely used in the fields of environment, medicine, industry, aviation, military and the like by virtue of excellent properties of the activated carbon fibers in all aspects.
Currently, activated carbon fibers are produced by activating carbonized carbon fibers as a raw material. The activation method includes a gas activation method and a chemical activation method. The activation speed of water vapor in the gas activation method is higher than that of CO2Nitrogen activation rate, chemical activation methods have some polluting properties but can give better microporous structures than gas activation. After the actual activationIn the process, KOH activation has a good effect, and KOH and carbon fibers can generate a series of chemical reactions. H produced continuously by reaction2、CO、CO2The impurity gas can increase the gas pressure in the activation furnace and also influence the protection effect of nitrogen, so that the nitrogen containing impurities in the furnace needs to be led out outwards, a large amount of pure nitrogen is frequently supplemented into the furnace, the nitrogen demand is large, and the operation is complicated. Meanwhile, the long high-temperature activation time means large energy consumption.
Disclosure of Invention
The invention provides a carbon fiber activation method and equipment, which can effectively recycle and utilize isolated gas and an activation reagent, reduce high-temperature activation time, enable the activation process to be continuous, and obtain carbon fibers with uniform performance, energy conservation, environmental protection and flexible use.
The present invention solves the above technical problems by the following technical features,
a carbon fiber coiled material activation method comprises the following steps:
A. dipping: sending the carbonized carbon fibers into an impregnation chamber through a conveying mechanism, wherein alkali liquor is filled in the impregnation chamber, alkaline substances in the alkali liquor and the carbon fibers are subjected to pre-activation reaction and attached to the surfaces of the carbon fibers, and then sending the carbon fibers out of the impregnation chamber through the conveying mechanism;
B. and (3) drying: the conveying mechanism conveys the carbon fibers to a drying cavity, and then the carbon fibers are dried by a drying device in the drying cavity to remove all moisture on the carbon fiber coiled material;
C. and (3) activation: the dried carbon fiber output from the drying chamber enters an activation chamber, the inside of the activation chamber is in a sealed state, the inside of the activation chamber is filled with nitrogen, and the carbon fiber coiled material is activated at high temperature in the activation chamber to obtain activated carbon fiber;
D. washing: the activated carbon fiber coiled material enters a washing chamber for spraying and washing until the washing water is neutral;
E. drying and forming: and (3) drying the washed activated carbon fiber coiled material before receiving in a drying chamber, and finally obtaining a coiled activated carbon fiber finished product through a coiling device.
In the activation process of the carbon fiber coiled material, before the drying in the step B, the carbon fiber coiled material is firstly squeezed by a squeezing roller and then sent to a drying device for drying; the lye extruded by the wringing roller flows to the lye recovery mechanism.
And D, cooling the activated carbon fiber coiled material before washing, wherein the activated carbon fiber coiled material firstly enters a cooling chamber for cooling and then enters a washing process.
According to the carbon fiber coiled material activation method, hot nitrogen for activation sequentially passes through the drying cavity and the drying chamber, then is filtered, then cold nitrogen after filtering enters the cooling chamber, and finally nitrogen in the cooling chamber enters the activation chamber after being heated.
Above-mentioned carbon fiber activation equipment, including transport mechanism, steeping chamber, dewatering mechanism, activation room, drying chamber and receiving agencies set gradually, transport mechanism conveys pending fiber coiled material, just pending fiber coiled material loops through steeping chamber, dewatering mechanism, activation room and drying chamber, and receiving agencies receives the fiber coiled material of drying chamber output, the steeping solution is equipped with in the steeping chamber, be filled with the isolation gas in the activation room, the activation room still is connected with circulation system, circulation system can handle the isolation gas.
Above-mentioned carbon fiber activation equipment, dewatering mechanism includes crowded water mechanism and stoving chamber, the stoving intracavity is equipped with one row of nozzle and makes the surface of air current blowout carbon fiber with higher speed, crowded water mechanism sets up the flooding chamber with between the stoving chamber, crowded water mechanism includes crowded water roller and water collector, the water collector is located crowded water roller below gets into the stoving chamber after crowded water roller extrusion from the fibre coiled material of flooding chamber output, the water collector bottom is equipped with the outlet pipe, outlet pipe and flooding chamber intercommunication.
According to the carbon fiber activation equipment, the cooling chamber and the washing chamber are sequentially arranged behind the activation chamber, the fiber coiled material sequentially passes through the activation chamber, the cooling chamber, the washing chamber and the drying chamber, the bottom of the washing chamber is provided with the drain hole, the drain hole is communicated with the water inlet end of the impregnation chamber through the pipeline, and the water inlet end of the impregnation chamber is provided with the pumping mechanism.
The carbon fiber activation equipment comprises a circulating system and a heating system, wherein the circulating system comprises an air inlet pipe, a first connecting pipe, a second connecting pipe, a third connecting pipe and an air return pipe, the air inlet pipe is arranged on the side wall of the activation chamber and is used for introducing air into the activation chamber, the air output end of the activation chamber, the first connecting pipe, the drying chamber, the second connecting pipe, the drying chamber, the third connecting pipe and the cooling chamber are sequentially communicated, and two ends of the air return pipe are respectively connected with the air outlet ends of the air inlet pipe and the cooling chamber; and a gas purifier is arranged on the third connecting pipe.
In the carbon fiber activation equipment, the conveying mechanism is a driving roller, a gas heating mechanism is arranged in the activation chamber, a spraying mechanism is arranged in the washing chamber, a first path extending mechanism is arranged below the spraying mechanism, and the fiber coiled material is conveyed to the drying chamber after passing through the first path extending mechanism; and a second path extending mechanism is arranged in the impregnation chamber, and the fiber coiled material passes through the second path extending mechanism and then is conveyed to the wringing roller.
Compared with the prior art, the invention can change the types of the activating agent, the dipping time, the activating temperature, the activating time, the type of the isolated gas and the like according to different adsorption targets, and can achieve the aim by adjusting the parameters at different links. The use is flexible, and simultaneously the system can realize continuous production, so that the properties of the activated carbon fibers are uniform and consistent. The whole activation system is efficient, water-saving, energy-saving and environment-friendly, can be intelligently regulated and controlled after being equipped with control software, and can produce high-efficiency activated carbon fibers with different properties and suitable for removing different pollutants.
And the nitrogen in the activation chamber is recycled through a recycling mechanism, so that the waste heat is fully utilized. Meanwhile, the chemical activation method is adopted to activate the carbon fiber in the flow, so that the cost of the KOH activator is higher. Extruding the wet carbon fibers by using a water extruding roller, and refluxing the extruded KOH to the impregnation chamber through a water outlet pipe; secondly, KOH which is not completely reacted on the surface of the activated carbon fiber is reactedGenerated K2And dissolving the O in a washing solution after washing to generate KOH, and finally recycling the washing solution into the impregnation chamber. Thus, in a modified process, both portions of the KOH solution are returned to the impregnation chamber for sufficient recovery of KOH.
In the activation process, in the process of leading nitrogen out of the activation chamber to remove impurities, high-temperature nitrogen is used as a heat source of the drying chamber and the drying chamber, and the heat of the nitrogen can be recovered for the production link; recovering CO and H after treatment by a gas purifier2And pure nitrogen is sent back to the activation furnace, and the nitrogen after cooling is used as a cold source of the cooling chamber, so that the heat on the surface of the activated carbon fiber can be greatly absorbed, and the nitrogen has enough temperature to return to the activation chamber. And nitrogen is used as an energy transmission medium, so that the energy consumption is effectively reduced. In the whole activation process, the gas circulation flow is a closed loop, and the recovery of the activating agent KOH reduces the waste water discharge and the production cost; the impurity gas generated in the activation process can also effectively reduce the emission of pollutant gas and the recovery of energy gas through impurity treatment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
reference numerals in the drawings denote: 1. the device comprises an impregnation chamber, 2 parts of an activation chamber, 3 parts of a drying chamber, 4 parts of a material receiving mechanism, 5 parts of a water squeezing roller, 6 parts of a water receiving disc, 7 parts of a drying chamber, 8 parts of a cooling chamber, 9 parts of a washing chamber, 10 parts of a water inlet end of the impregnation chamber, 11 parts of an air inlet pipe, 12 parts of a first connecting pipe, 13 parts of a second connecting pipe, 14 parts of a third connecting pipe, 15 parts of an air purifying pipe, 16 parts of an air purifier, 17 parts of an air heating mechanism, 18 parts of a spraying mechanism, 19 parts of a first path extending mechanism and 20 parts of a second path extending mechanism.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples serve to illustrate the invention.
The carbon fiber coiled material is processed according to the following steps:
A. dipping: sending the carbonized carbon fibers into an impregnation chamber through a conveying mechanism, wherein alkali liquor is filled in the impregnation chamber, alkaline substances in the alkali liquor and the carbon fibers are subjected to pre-activation reaction and attached to the surfaces of the carbon fibers, and then sending the carbon fibers out of the impregnation chamber through the conveying mechanism; the carbon fibre impregnation time can be varied by changing the course of the conveyor belt in the impregnation chamber.
B. And (3) drying: the impregnated carbon fiber can not be directly sent into an activation furnace for high-temperature activation, so that mesopores are prevented from being generated by the reaction of the carbon fiber and water at high temperature. Squeezing the wet carbon fibers by a squeezing roller to remove part of water on the surfaces of the carbon fibers, generally taking out eighty-nine times of water, and then conveying the carbon fiber coiled materials to a drying device for drying; the lye extruded by the wringing roller flows to the lye recovery mechanism. The conveying mechanism conveys the carbon fibers to a drying cavity, and then the carbon fibers are dried by a drying device in the drying cavity to remove all moisture on the carbon fiber coiled material;
C. and (3) activation: the dried carbon fiber output from the drying chamber enters an activation chamber, the inside of the activation chamber is in a sealed state, the inside of the activation chamber is filled with nitrogen, and the carbon fiber coiled material is activated at high temperature in the activation chamber to obtain activated carbon fiber; the activation temperature is controlled by controlling the heating element, thereby producing the desired activated carbon fiber.
D. Washing: and the activated carbon fiber coiled material firstly enters a cooling chamber for cooling, then enters a washing chamber for spraying and washing until the washing water is neutral. The activated carbon fibers have KOH adhered to their surfaces, and thus need to be washed. The carbon fiber is prevented from reacting with water at high temperature to influence the activation effect, and needs to be cooled before washing. The active carbon fiber is washed clean by pure water spraying.
E. Drying and forming: and (3) drying the washed activated carbon fiber coiled material before receiving in a drying chamber, and finally obtaining a coiled activated carbon fiber finished product through a coiling device.
The activation furnace is arranged in the activation chamber, the influence of gas components in the air can be avoided under the protection effect of nitrogen, a certain amount of carbon atoms can be consumed when the polycondensation reaction is generated in the carbon fibers, meanwhile, a certain amount of carbon atoms are lost again under the etching effect of KOH, and K atoms and H atoms are generated2And CO, etc. Generation of H2And the chemical reaction can be inhibited from going to the right by increasing the concentration of reducing gases such as CO, so that nitrogen containing impurities in the activation chamber needs to be led out outwards, the generated reducing gases can be taken away in time by flowing nitrogen, and meanwhile, pure nitrogen is supplemented into the activation furnace. Thereby ensuring the normal proceeding of the activation reaction. In the activation process, high-temperature nitrogen is taken as a heat source of a drying cavity and a drying chamber in the process of leading the high-temperature nitrogen out of an activation chamber to remove impurities, so that the heat of the high-temperature nitrogen can be fully utilized for a production link; in the process of sending the pure nitrogen back to the activation chamber, the low-temperature nitrogen is used as a cold source, so that the heat on the surface of the activated carbon fiber can be greatly absorbed, and the nitrogen has enough temperature to return to the activation chamber. In the process of removing impurities from nitrogen, nitrogen is used as an energy transmission medium, so that the energy consumption is effectively reduced.
By arranging the circulating system, hot nitrogen for activation is introduced to the drying cavity and the drying chamber sequentially through the pipeline, then is filtered, then the filtered cold nitrogen enters the cooling chamber, and finally the nitrogen in the cooling chamber enters the activation chamber after being heated. One cycle is completed. Therefore, the high temperature of the nitrogen in the activation chamber can be utilized, and energy is saved.
Referring to the attached drawing 1, the carbon fiber activation equipment comprises a conveying mechanism, a dipping chamber 1, a water removal mechanism, an activation chamber 2, a drying chamber 3 and a material receiving mechanism 5, wherein the dipping chamber 1, the water removal mechanism, the activation chamber 2, the drying chamber 3 and the material receiving mechanism 5 are sequentially arranged, the conveying mechanism conveys a fiber coiled material to be processed, the fiber coiled material to be processed sequentially passes through the dipping chamber 1, the water removal mechanism, the activation chamber 2 and the drying chamber 3, the material receiving mechanism 5 receives the fiber coiled material output by the drying chamber 3, dipping solution is filled in the dipping chamber 1, the dipping solution is preferably KOH solution, isolation gas is filled in the activation chamber 2, the activation chamber 2 is further connected with a circulating system, and the circulating system can process the isolation gas. Through the arrangement, high-temperature nitrogen in the activation chamber can be recycled through the circulating system.
In order to prevent the carbon fibers from reacting with water at high temperature to form mesopores, the carbon fibers impregnated in the impregnation chamber cannot be directly fed into the activation chamber for high-temperature activation. So set up dewatering mechanism, dewatering mechanism includes crowded water mechanism and stoving chamber 7, crowded water mechanism sets up steeping chamber 1 with between the stoving chamber 7, crowded water mechanism includes crowded water roller and water collector 6, water collector 6 is located crowded water roller below gets into stoving chamber 7 after crowded water roller extrusion from the fibrous coiled material of steeping chamber 1 output, 6 bottoms of water collector are equipped with the outlet pipe, the outlet pipe communicates with the end 10 that intakes of steeping chamber. The impregnated carbon fiber is firstly extruded by a wringing roller to remove most of water (80-90%) on the surface of the carbon fiber, and then the carbon fiber is sent into a drying cavity by a conveying mechanism, and the drying cavity heats and dries the carbon fiber. In the drying process, the carbon fiber is pre-activated, KOH is promoted to enter the carbon fiber at an accelerated speed, a small amount of generated water vapor reacts with the carbon fiber to generate a certain micro mesoporous, a foundation is laid for subsequent high-temperature chemical activation of the carbon fiber, and the activation time is shortened.
And (2) the dried carbon fiber enters an activation chamber, the carbon fiber is activated at high temperature under the protection of nitrogen in the activation chamber, the carbon fiber is finely etched from inside to outside by decomposing KOH to generate a large number of micropores, and the activation temperature is controlled by controlling a heating element, so that the activated carbon fiber with the required performance is prepared. The activated carbon fibers are washed because KOH, K2O, and K2CO3 adhere to the surfaces or the interiors thereof. The high-temperature carbon fibers need to be cooled before washing, so that the carbon fibers in a high-temperature state are prevented from reacting with water, and the pore structure and the activation effect are prevented from being influenced. The fiber coiled material drying device is characterized in that a cooling chamber 8 and a washing chamber 9 are sequentially arranged behind the activation chamber 2, the fiber coiled material sequentially passes through the activation chamber 2, the cooling chamber 8, the washing chamber 9 and the drying chamber 3, a drain hole is formed in the bottom of the washing chamber 9, the drain hole is communicated with a water inlet end 10 of the impregnation chamber through a pipeline, and the washing chamber 9 is provided with a pumping mechanism and a spraying mechanism. The activated carbon fibers are washed to neutrality by the washing chamber. The KOH activator is costly and should be fully utilized. Firstly, squeezing wet carbon fibers by a squeezing roller to obtain a solution containing a large amount of KOH; secondly, KOH which is not completely reacted on the surface of the activated carbon fiber is dissolved in a washing solution after being washed. Thus, in a modified process, both portions of the KOH solution are returned to the impregnation chamber for sufficient recovery of KOH. And (4) after the washed activated carbon fiber enters a drying device to remove all water, obtaining the finished product of the activated carbon fiber through a coiling device.
The circulating system comprises an air inlet pipe 11, a first connecting pipe 12, a second connecting pipe 13, a third connecting pipe 14 and an air return pipe 15, the air inlet pipe 11 is arranged on the side wall of the activation chamber 2 and is used for introducing air into the activation chamber 2, the air output end of the activation chamber 2, the first connecting pipe 12, the drying chamber, the second connecting pipe 13, the drying chamber 3, the third connecting pipe 14 and the cooling chamber 8 are sequentially communicated, and two ends of the air return pipe 15 are respectively connected with the air outlet ends of the air inlet pipe 11 and the cooling chamber 8; a gas purifier 16 is arranged on the third connecting pipe 14. High temperature nitrogen gas in the activation chamber leads to dewatering mechanism and drying chamber before the activation, heats the drying back to the carbon fiber, and after twice drying is exothermic, nitrogen gas temperature itself descends, and nitrogen gas carries out the edulcoration to nitrogen gas through gas purifier, obtains pure low temperature nitrogen gas after the edulcoration. And (3) taking low-temperature nitrogen as a cooling medium, feeding the low-temperature nitrogen into a cooling chamber to cool the activated carbon fiber, and finally feeding the nitrogen back to the activation chamber to complete nitrogen circulation. In the drying process, the pre-activation effect is achieved again, KOH is promoted to enter the carbon fibers at an accelerated speed, a small amount of generated water vapor reacts with the carbon fibers to generate a certain micro mesoporous, a foundation is laid for subsequent high-temperature chemical activation of the carbon fibers, and the activation time is shortened.
The access & exit of stoving chamber, activation chamber, cooling chamber, washing room and drying chamber all carries out sealing treatment, and the intake pipe installation pump of admitting air simultaneously to guarantee that the environment that is the pressure-fired in stoving chamber, activation chamber, cooling chamber, washing chamber and the drying chamber, the reduction air admission has guaranteed the isolation of isolation gas, improves the activation effect.
The conveying mechanism is a driving roller, a gas heating mechanism 17 is arranged in the activation chamber 2, a spraying mechanism 18 is arranged in the washing chamber 9, a first path extending mechanism 19 is arranged below the spraying mechanism 18, and the fiber coiled material passes through the first path extending mechanism 19 and then is conveyed to the drying chamber 3; the first path lengthening mechanism can increase the residence time of the carbon fiber in the washing chamber, thereby improving the washing effect. A second path extending mechanism 20 is arranged in the impregnation chamber 1, and the fiber coiled material passes through the second path extending mechanism 20 and then is conveyed to a water squeezing roller. The carbonized carbon fibers enter the impregnation chamber along with the conveyor belt, so that KOH and the carbon fibers are pre-activated and enter the carbon fibers, and the second path extension mechanism can change the impregnation time of the carbon fibers by changing the path of the conveyor belt in the impregnation chamber. The method is beneficial to prolonging the dipping time of the carbon fiber in the dipping chamber, and the activation effect is improved in a limited space.
The working process is as follows, the transmission mechanism drives the carbon fiber to enter the impregnation chamber for impregnation. And then the water squeezing roller squeezes the impregnated carbon fibers, the squeezed carbon fibers enter a drying cavity for drying, high-temperature nitrogen with well adjusted flow is used for further preactivating the carbon fibers, then the carbon fibers enter an activation chamber for high-temperature activation, the activated carbon fibers enter a cooling chamber for cooling treatment, the cooled carbon fibers are sent into a washing chamber for washing and impurity removal, finally the carbon fibers enter a drying chamber for drying, and then a material receiving mechanism receives the material.
Example one
The alkali liquor in the impregnation chamber 1 adopts 5-20% KOH solution, the impregnation time is 1-3 hours, the wringing roller 5 extrudes 80-90% of water and then enters the drying chamber 77, a nozzle at the top of the drying chamber ejects nitrogen with the temperature of 800-; and then the fiber enters an activation chamber 2, and a temperature control type high-temperature activation furnace in the activation chamber 2 is activated for 30-60 minutes at a certain temperature, so that KOH is decomposed, carbon microcrystals are etched outwards from the interior of the fiber, a large number of micropores are formed, and the activation process is completed. And then the carbon fiber enters a cooling chamber 8, is cooled to about 130 ℃ by cold nitrogen after being cooled circularly, enters a washing chamber 9 for washing and impurity removal to obtain a developed microporous material with smooth pores, and after being washed by the washing chamber 9, the washing chamber 9 can be additionally provided with a secondary water squeezing mechanism, and then the carbon fiber enters a drying chamber 3 to be dried by the nitrogen coming out of a drying chamber 7 and finally is wound by a material receiving mechanism 4. The combination of water vapor activation and chemical activation increases the activation effect.
The reaction formula is as follows: the initial activation in the drying cavity comprises the following reaction process
C+H2O→CO↑+H2↑
C+CO2→2CO↑
In the high-temperature activation chamber, KOH and carbon fibers undergo a series of chemical reactions. The reaction process is as follows
4KOH+CH2→K2CO3+K2O+3H2↑
8KOH+2CH→2K2CO3+2K2O+5H2↑
K2O+C→2K+CO↑
K2CO3+2C→2K+3CO↑
C+CO2→CO↑
The reaction occurred upon washing as follows:
K2O+H2O→2KOH
K+H2O→KOH+H2↑
in addition, according to different adsorption targets, the types of the activating agents, the dipping time, the activating temperature, the activating time, the types of the barrier gases and the like can be changed, and the purpose of obtaining activated carbon fibers with different properties can be achieved by adjusting parameters at different links. The use is flexible, and simultaneously the system can realize continuous production, so that the properties of the activated carbon fibers are uniform and consistent. The whole activation system is efficient, water-saving, energy-saving and environment-friendly, can be intelligently regulated and controlled after being equipped with control software, and can produce high-efficiency activated carbon fibers with different properties and suitable for removing different pollutants.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A carbon fiber coil activation method is characterized in that the carbon fiber coil is processed according to the following steps:
A. dipping: the carbonized carbon fibers are conveyed into an impregnation chamber (1) through a conveying mechanism, alkali liquor is filled in the impregnation chamber (1), alkaline substances in the alkali liquor and the carbon fibers are subjected to pre-activation reaction and attached to the surfaces of the carbon fibers, and then the carbon fibers are conveyed out of the impregnation chamber (1) through the conveying mechanism;
B. and (3) drying: the conveying mechanism conveys the carbon fibers to the drying cavity (7), and then the carbon fibers are dried by a drying device in the drying cavity (7) to remove all moisture on the carbon fiber coiled material;
C. and (3) activation: the dried carbon fiber output from the drying chamber (3) enters an activation chamber (2), the inside of the activation chamber (2) is in a sealed state, the activation chamber (2) is filled with nitrogen, and the carbon fiber coiled material is activated at high temperature in the activation chamber (2) to obtain activated carbon fiber;
D. washing: the activated carbon fiber coiled material enters a washing chamber (9) for spraying and washing until the washing water is neutral;
E. drying and forming: and (3) drying the washed activated carbon fiber coiled material before receiving in a drying chamber (3), and finally obtaining a coiled activated carbon fiber finished product through a coiling device.
2. The carbon fiber coil activation method according to claim 1, wherein in the carbon fiber coil activation process, before the drying in the step B, the carbon fiber coil is firstly squeezed by a squeezing roller and then sent to a drying device for drying; the lye extruded by the wringing roller flows to the lye recovery mechanism.
3. The carbon fiber coil activation method according to claim 2, wherein a cooling treatment is performed before the washing in step D, and the activated carbon fiber coil is first cooled in a cooling chamber (8) and then enters the washing process.
4. The carbon fiber coil activation method according to claim 3, characterized in that hot nitrogen for activation passes through the drying chamber (7) and the drying chamber (3) in sequence, then is filtered, then cold nitrogen after filtering enters the cooling chamber (8), and finally nitrogen in the cooling chamber (8) enters the activation chamber (2) after being heated.
5. The utility model provides a carbon fiber activation equipment, its characterized in that includes transport mechanism, steeping chamber (1), dewatering mechanism, activation room (2), drying chamber (3) and receiving agencies (5) set gradually, transport mechanism with pending fibre coiled material convey, just pending fibre coiled material loops through steeping chamber (1), dewatering mechanism, activation room (2) and drying chamber (3), receiving agencies (5) receive the fibre coiled material of drying chamber (3) output, the impregnation solution is equipped with in steeping chamber (1), be filled with isolation gas in activation room (2), activation room (2) still are connected with circulation system, circulation system can handle isolation gas.
6. The carbon fiber activation equipment according to claim 5, wherein the water removal mechanism comprises a water squeezing mechanism and a drying chamber (7), the drying chamber is internally provided with a row of nozzles to accelerate the air flow to be sprayed out to the surface of the carbon fiber, the water squeezing mechanism is arranged between the impregnation chamber (1) and the drying chamber (7), the water squeezing mechanism comprises a water squeezing roller (5) and a water receiving tray (6), the water receiving tray (6) is positioned below the water squeezing roller, the fiber coiled material output from the impregnation chamber (1) enters the drying chamber (7) after being squeezed by the water squeezing roller (5), the bottom of the water receiving tray (6) is provided with a water outlet pipe, and the water outlet pipe is communicated with the impregnation chamber (1).
7. The carbon fiber activation equipment according to claim 6, wherein a cooling chamber (8) and a washing chamber (9) are sequentially arranged behind the activation chamber (2), the fiber coiled material sequentially passes through the activation chamber (2), the cooling chamber (8), the washing chamber (9) and the drying chamber (3), a drain hole is formed in the bottom of the washing chamber (9), the drain hole is communicated with the water inlet end (10) of the impregnation chamber through a pipeline, and a pumping mechanism is arranged at the water inlet end (10) of the impregnation chamber.
8. The carbon fiber activation equipment according to claim 7, wherein the circulation system comprises an air inlet pipe (11), a first connecting pipe (12), a second connecting pipe (13), a third connecting pipe (14) and an air return pipe (15), the air inlet pipe (11) is arranged on the side wall of the activation chamber (2) and supplies air to the activation chamber (2), the air output end of the activation chamber (2), the first connecting pipe (12), the drying chamber, the second connecting pipe (13), the drying chamber (3), the third connecting pipe (14) and the cooling chamber (8) are communicated in sequence, and two ends of the air return pipe (15) are respectively connected with the air outlet ends of the air inlet pipe (11) and the cooling chamber (8); and a gas purifier (16) is arranged on the third connecting pipe (14).
9. The carbon fiber activation equipment according to claim 8, wherein the conveying mechanism is a driving roller, a gas heating mechanism (17) is arranged in the activation chamber (2), a spraying mechanism (18) is arranged in the washing chamber (9), a first path lengthening mechanism (19) is arranged below the spraying mechanism (18), and the fiber coiled material passes through the first path lengthening mechanism (19) and is conveyed to the drying chamber (3); a second path extending mechanism (20) is arranged in the impregnation chamber (1), and the fiber coiled material passes through the second path extending mechanism (20) and then is conveyed to a water squeezing roller.
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