CN107055529A - Prepare the method and system of activated carbon - Google Patents
Prepare the method and system of activated carbon Download PDFInfo
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- CN107055529A CN107055529A CN201611105202.8A CN201611105202A CN107055529A CN 107055529 A CN107055529 A CN 107055529A CN 201611105202 A CN201611105202 A CN 201611105202A CN 107055529 A CN107055529 A CN 107055529A
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Abstract
The invention discloses the method and system for preparing activated carbon.Wherein, this method includes：(1) mao bamboon is subjected to break process, to obtain mao bamboon particle；(2) the mao bamboon particle is supplied to revolving bed pyrolysis oven and carries out pyrolysis processing, to obtain pyrolysis oil gas and to be pyrolyzed bamboo charcoal；(3) the pyrolysis oil gas is supplied to gas-liquid separation device and carries out gas-liquid separation processing, to obtain pyrolysis gas, tar and the mixed liquor of bamboo vinegar；(4) supplied a part for the pyrolysis gas as fuel gas to gas fired-boiler, to obtain high-temperature steam；And (5) supply the pyrolysis bamboo charcoal and the high-temperature steam to rotary activated furnace, to carry out activation process to the pyrolysis bamboo charcoal, activated carbon and high-temperature flue gas are obtained.Mao bamboon can be pyrolyzed the activated carbon that obtained pyrolysis bamboo charcoal deep processing is high added value by this method, and without external energy, low-carbon environment-friendly is particularly suitable for large-scale promotion.
Description
Technical field
The present invention relates to derived energy chemical field, specifically, the present invention relates to the method and system for preparing activated carbon.
Background technology
China be grown on the south the native place of mao bamboon, the Changjiang river in the world 85% mao bamboon.It is distributed widely in 400~800
Hills, the low mountain piedmont belt of rice, only Xianning bamboo cultivated area is just up to 1,600,000 mu, and current mao bamboon production capacity surplus is traditional
Big lake is fished and crop greenhouse needs substantial amounts of mao bamboon, and present big lake fishing is limited, and crop greenhouse is replaced with steel construction
Mao bamboon is supported, and other light industry products such as demand such as summer sleeping mat, bamboo chopsticks is also reduced so that mao bamboon price drop range is serious, and hair
Withered bamboo of bamboo processing waste material, leftover pieces, intermountain etc. is difficult by, and directly discards, and is utilized it would therefore be highly desirable to develop a kind of new mao bamboon
Technology.
Mao bamboon is one kind of biomass, can be applied to the utilization technology of current all biomass.At present, domestic exogenous substances
Using technology species is various, technical sophistication is various, but exist that secondary environmental pollution, energy-output ratio be big, product is single or
Product deep processing degree is low to cause the problems such as economic value is relatively low.
Thus, the method for processing mao bamboon still has much room for improvement at present.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is that proposition prepares the method and system of activated carbon.Mao bamboon can be pyrolyzed obtained pyrolysis bamboo charcoal and add deeply by this method
Work is the activated carbon of high added value, and without external energy, low-carbon environment-friendly is particularly suitable for large-scale promotion.
In the first aspect of the present invention, the present invention proposes a kind of method for preparing activated carbon.According to the implementation of the present invention
Example, this method includes：(1) mao bamboon is subjected to break process, to obtain mao bamboon particle；(2) by the mao bamboon particle supply to
Revolving bed pyrolysis oven carries out pyrolysis processing, to obtain pyrolysis oil gas and to be pyrolyzed bamboo charcoal；(3) the pyrolysis oil gas is supplied to gas
Liquid separating apparatus carries out gas-liquid separation processing, to obtain pyrolysis gas, tar and the mixed liquor of bamboo vinegar；(4) by the pyrolysis
A part for gas is supplied to gas fired-boiler as fuel gas, to obtain high-temperature steam；And (5) are pyrolyzed bamboo charcoal and institute by described
State high-temperature steam to supply to rotary activated furnace, to carry out activation process to the pyrolysis bamboo charcoal, obtain activated carbon and height
Warm flue gas.
Thus, the method for preparing activated carbon according to embodiments of the present invention through broken mao bamboon by will supply to revolving bed
Pyrolysis oven carries out pyrolysis processing, obtains pyrolysis oil gas and is pyrolyzed bamboo charcoal, pyrolysis oil gas obtains pyrolysis gas, Jiao after gas-liquid separation
Oil and bamboo vinegar, wherein tar and bamboo vinegar can externally sell, and pyrolysis gas it is a part of can be supplied as fuel gas to
Gas fired-boiler, makes gas fired-boiler burning produce high-temperature steam, without for gas fired-boiler external energy, and then by high-temperature steam and hair
The pyrolysis bamboo charcoal that bamboo pyrolysis is obtained, which is supplied to rotary activated furnace, carries out activation process, obtains activated carbon and high-temperature flue gas.The party
Method realizes making full use of for mao bamboon, and mao bamboon is pyrolyzed into the activated carbon that bamboo charcoal deep processing is high added value, and energy consumption is relatively low, to ring
Border is friendly, is particularly suitable for large-scale promotion.
In addition, the method according to the above embodiment of the present invention for preparing activated carbon can also have technology additional as follows special
Levy：
In some embodiments of the invention, in step (1), the particle diameter of the mao bamboon particle is 50~100mm.Thus,
The efficiency of the pyrolysis processing can be significantly improved.
In some embodiments of the invention, in step (2), the temperature of the pyrolysis processing is 400~700 degrees Celsius.
Thus, it is possible to further improve the efficiency of the pyrolysis processing.
In some embodiments of the invention, the method for preparing activated carbon further comprises：(6) by the pyrolysis gas
Another part as fuel be respectively fed to the heat storage type combustion radiant tube in the revolving bed pyrolysis oven and/or the revolution
Catalytic burner in formula activation furnace.Thus, it is possible to further reduce the energy consumption of the method for preparing activated carbon.
In some embodiments of the invention, the method for preparing activated carbon further comprises：(7) by the pyrolysis
Gas is supplied to before the catalytic burner, the pyrolysis gas and the high-temperature flue gas is carried out into heat exchange processing in advance, with facility
The pyrolysis gas is heated with the high-temperature flue gas.Thus, it is possible to significantly improve the efficiency of subsequent activation processing.
In some embodiments of the invention, in step (5), the activation process is completed under 800~950 degrees Celsius
's.Thus, it is possible to further improve the efficiency of the activation process.
In the second aspect of the present invention, the present invention proposes a kind of method for preparing activated carbon for implementing above-described embodiment
System.Embodiments in accordance with the present invention, the system includes：Breaker, the breaker has mao bamboon entrance and mao bamboon broken
Material outlet；Revolving bed pyrolysis oven, the revolving bed pyrolysis oven has feed zone, preheating zone, transition region, gas-producing area and discharge zone,
The feed zone, which has in mao bamboon particle entrance, the preheating zone, the transition region and the gas-producing area, is provided with multiple accumulation of heats
Formula combustion radiant tube, the gas-producing area has pyrolysis oil gas vent, and the discharge zone has the outlet of pyrolysis bamboo charcoal, the pyrolysis bamboo
Charcoal outlet is connected with spiral discharging device, and the mao bamboon particle entrance is connected with mao bamboon particle outlet；Gas-liquid separation device, institute
Stating gas-liquid separation device has pyrolysis oil gas entrance, pyrolysis gas outlet, mixture export；Gas fired-boiler, the gas-fired boiler stove
There are fuel gas entrance and high-temperature steam outlet, the fuel gas entrance is connected with the pyrolysis gas outlet；Rotary activated furnace, institute
State in rotary activated furnace have catalytic burner and being sequentially connected with the catalytic burner be provided with heating zone, region of activation and
Cooling area, the heating zone has pyrolysis bamboo charcoal entrance, and the pyrolysis bamboo charcoal entrance is connected with the spiral discharging device, the work
Change in area and be provided with multiple high-temperature steam spouts, the high-temperature steam spout is connected with the high-temperature steam outlet, the cooling
Area has high-temperature flue gas outlet and activated carbon outlet.
Thus, after the system for preparing activated carbon according to embodiments of the present invention crushes mao bamboon by using breaker,
Supply to revolving bed pyrolysis oven carries out pyrolysis processing, obtains pyrolysis oil gas and is pyrolyzed bamboo charcoal, pyrolysis oil gas is through gas-liquid separation device
After processing, pyrolysis gas, tar and bamboo vinegar are obtained, wherein tar and bamboo vinegar can externally be sold, and a part for pyrolysis gas
It can be supplied as fuel gas to gas fired-boiler, gas fired-boiler burning is produced high-temperature steam, without for the additional energy of gas fired-boiler
Source, and then high-temperature steam and the obtained pyrolysis bamboo charcoal of mao bamboon pyrolysis are supplied to rotary activated furnace and carry out activation process, obtain
Activated carbon and high-temperature flue gas.The system realizes making full use of for mao bamboon, and it is high added value that mao bamboon is pyrolyzed into bamboo charcoal deep processing
Activated carbon, and energy consumption is relatively low, it is environmentally friendly, it is particularly suitable for large-scale promotion.
In addition, the system according to the above embodiment of the present invention for preparing activated carbon can also have technology additional as follows special
Levy：
In some embodiments of the invention, the system for preparing activated carbon further comprises：The pyrolysis gas outlet
It is connected with the heat storage type combustion radiant tube in the revolving bed pyrolysis oven.Thus, it is possible to regard the pyrolysis gas as the accumulation of heat
The fuel gas of formula combustion radiant tube, so as to significantly reduce the energy consumption of system.
In some embodiments of the invention, the system for preparing activated carbon further comprises：The pyrolysis gas outlet
It is connected with the catalytic burner in the rotary activated furnace.Thus, it is possible to regard the pyrolysis gas as the catalytic burner
Fuel gas so that further reduce system energy consumption.
In some embodiments of the invention, state and prepare the system of activated carbon and further comprise：Heat exchanger, the heat exchanger
With pyrolysis gas entrance, high temperature pyrolysis gas outlet, high-temperature flue gas entry and low-temperature flue gas outlet, the pyrolysis gas entrance with it is described
The pyrolysis gas outlet of gas-liquid separation device is connected, and the high temperature pyrolysis gas outlet is burnt with the catalysis in the rotary activated furnace
Device is connected, and the high-temperature flue gas entry is connected with the high-temperature flue gas outlet of the cooling area.Thus, it is possible to significantly improve at activation
The efficiency of reason.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the method flow schematic diagram according to an embodiment of the invention for preparing activated carbon；
Fig. 2 is the method flow schematic diagram for preparing activated carbon according to further embodiment of the present invention；
Fig. 3 is the system structure diagram according to an embodiment of the invention for preparing activated carbon；
Fig. 4 is the system structure diagram for preparing activated carbon according to further embodiment of the present invention；
Fig. 5 is the system structure diagram for preparing activated carbon according to another embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that unless otherwise clearly defined and limited, term " connected " should be done
It broadly understood, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used
Be electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the connection of two element internals
Or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
In the first aspect of the present invention, the present invention proposes a kind of method for preparing activated carbon.According to the implementation of the present invention
Example, this method includes：(1) mao bamboon is subjected to break process, to obtain mao bamboon particle；(2) by the mao bamboon particle supply to
Revolving bed pyrolysis oven carries out pyrolysis processing, to obtain pyrolysis oil gas and to be pyrolyzed bamboo charcoal；(3) the pyrolysis oil gas is supplied to gas
Liquid separating apparatus carries out gas-liquid separation processing, to obtain pyrolysis gas, tar and the mixed liquor of bamboo vinegar；(4) by the pyrolysis
A part for gas is supplied to gas fired-boiler as fuel gas, to obtain high-temperature steam；And (5) are pyrolyzed bamboo charcoal and institute by described
State high-temperature steam to supply to rotary activated furnace, to carry out activation process to the pyrolysis bamboo charcoal, obtain activated carbon and height
Warm flue gas.
The method for preparing activated carbon according to embodiments of the present invention is described in detail below, should with reference to Fig. 1 and Fig. 2
Method includes：
S100：Break process
In the step, mao bamboon is subjected to break process, to obtain mao bamboon particle.Specifically, the bamboo charcoal ash content in mao bamboon
It is extremely low, it is the quality raw materials for preparing activated carbon, mao bamboon waste material, leftover pieces, intermountain are discarded in traditional mao bamboon processing method such as withered bamboo
Unserviceable mao bamboon material, can be used to prepare activated carbon by the method for the present invention.Embodiments in accordance with the present invention,
Mao bamboon is carried out before pyrolysis processing, mao bamboon is subjected to break process first, it is possible thereby to significantly improve follow-up pyrolysis processing
Efficiency.
Embodiments in accordance with the present invention, the particle diameter of mao bamboon particle is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, the particle diameter of mao bamboon particle can be 50~100mm.Invention
People is had found, mao bamboon is crushed into the particle diameter, the advantage of revolving bed pyrolysis oven can be given full play in follow-up pyrolysis processing, greatly
Improve the efficiency of resource utilization and pyrolysis processing in ground；And if mao bamboon is crushed into smaller particle, then can make break process
Difficulty and cost increase.
S200：Pyrolysis processing
In the step, the mao bamboon particle obtained in S100 is supplied to revolving bed pyrolysis oven and carries out pyrolysis processing, so as to
To pyrolysis oil gas and pyrolysis bamboo charcoal.
Embodiments in accordance with the present invention, the condition of pyrolysis processing is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, pyrolysis processing can be carried out under 400~700 degrees Celsius.
Inventor has found, if the temperature of pyrolysis processing is too low, the larger molecular organicses in mao bamboon can not be made effectively to be decomposed into Jiao
The micromolecular compounds such as oil, bamboo charcoal；And if the temperature of pyrolysis processing is too high, then can increase energy consumption.
S300：Gas-liquid separation is handled
In the step, will pyrolysis oil gas supply to gas-liquid separation device carry out gas-liquid separation processing, so as to obtain pyrolysis gas,
The mixed liquor of tar and bamboo vinegar.Specifically, the pyrolysis gas obtained has certain calorific value, can be further used as subsequent step
Needed for fuel gas be used, and obtained tar and the mixed liquor of bamboo vinegar can be stored and for sale.
S400：Produce high-temperature steam
In the step, supplied a part for the pyrolysis gas obtained in S300 as fuel gas to gas fired-boiler, so as to
To high-temperature steam.Embodiments in accordance with the present invention, obtained high-temperature steam can meet the steam needed for subsequent activation processing
Amount, so as to reduce the energy consumption of activation process.
S410：Pyrolysis gas is recycled
In the step, another part of the pyrolysis gas obtained in S300 is respectively fed to the accumulation of heat in revolving bed pyrolysis oven
Catalytic burner in formula combustion radiant tube and/or rotary activated furnace.Embodiments in accordance with the present invention, pyrolysis gas has certain
Calorific value, can be used as the fuel gas of heat storage type combustion radiant tube and catalytic burner, it is extra without being passed through in addition
Fuel gas, so as to reduce the energy consumption of pyrolysis processing and activation process.
S420：Heat exchange is handled
In the step, supply to before catalytic burner, changed in advance through pyrolysis gas with high-temperature flue gas by pyrolysis gas
Heat treatment, to be heated using high-temperature flue gas to pyrolysis gas.Specifically, high-temperature flue gas by rotary activated furnace to pyrolysis bamboo
Charcoal produced in activated process, with higher temperature, by carrying out heat exchange processing, can effectively improve pyrolysis gas
Calorific value, the exothermal effect equal with natural gas is reached when pyrolysis gas is burnt in catalytic burner.
S500：Activation process
In the step, pyrolysis bamboo charcoal and high-temperature steam are supplied to rotary activated furnace, to be carried out to pyrolysis bamboo charcoal
Activation process, obtains activated carbon and high-temperature flue gas.Specifically, embodiments in accordance with the present invention, start rotary activated furnace first
Interior catalytic burner, and make excess air coefficient therein be 2, the pyrolysis gas obtained in S300 is being moistened with the honeybee of catalyst
Nest shape cordierite carrier surface-stable flameless combustion, so as to transmit heat in the way of radiation into rotary activated furnace, enters one
Step ground, the high-temperature steam that steam boiler is produced into pyrolysis bamboo charcoal sprinkling S400, makes the temperature of pyrolysis bamboo charcoal further raise, together
When constantly activated by the continuous contact with high-temperature steam, generate activated carbon.In addition, the carbon dioxide in swinging pyrolysis oven is also
It can be reacted with the carbon black in pyrolysis bamboo charcoal, so as to improve the quality of the activated carbon prepared, further increase activated carbon
Specific surface area.
Embodiments in accordance with the present invention, the condition of activation process is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, activation process is completed under 800~950 degrees Celsius.
Inventor is had found, activation process is carried out using the temperature, what the efficiency and raising that can significantly improve activation process were prepared
The quality of activated carbon.
Further, the high-temperature flue gas produced in embodiments in accordance with the present invention, S500 burns with preparing supply to catalysis
The pyrolysis gas of device is carried out after heat exchange processing, the qualified discharge after cyclone dust removal.Due to being activated using catalytic burner to swinging
Stove is heated, and pollutant load is extremely low in the tail gas after high-temperature flue gas removing dust, and wherein CO contents are not higher than 4 milligrams/cube
Rice, NOxContent is not higher than 10 milligrams/cubic metre.
Thus, the method for preparing activated carbon according to embodiments of the present invention through broken mao bamboon by will supply to revolving bed
Pyrolysis oven carries out pyrolysis processing, obtains pyrolysis oil gas and is pyrolyzed bamboo charcoal, pyrolysis oil gas obtains pyrolysis gas, Jiao after gas-liquid separation
Oil and bamboo vinegar, wherein tar and bamboo vinegar can externally sell, and pyrolysis gas it is a part of can be supplied as fuel gas to
Gas fired-boiler, makes gas fired-boiler burning produce high-temperature steam, another part of pyrolysis gas can be supplied respectively as fuel gas to
The catalytic burner in heat storage type combustion radiant tube and/or rotary activated furnace in revolving bed pyrolysis oven, without for combustion
Gas boiler, heat storage type combustion radiant tube and catalytic burner external energy, and then the heat that high-temperature steam and mao bamboon pyrolysis are obtained
Solution bamboo charcoal, which is supplied to rotary activated furnace, carries out activation process, obtains activated carbon and high-temperature flue gas.It is computed, produces 1t activated carbons
2t high-temperature steams and 2.5~3t is needed to be pyrolyzed bamboo charcoal.Making full use of for mao bamboon is the method achieve, mao bamboon is pyrolyzed into bamboo charcoal adds deeply
Work is the activated carbon of high added value, and energy consumption is relatively low, environmentally friendly, is particularly suitable for large-scale promotion.
In the second aspect of the present invention, the present invention proposes a kind of method for preparing activated carbon for implementing above-described embodiment
System.Embodiments in accordance with the present invention, the system includes：Breaker 100, revolving bed pyrolysis oven 200, gas-liquid separation device
300th, gas fired-boiler 400 and rotary activated furnace 500.Wherein, there is breaker 100 mao bamboon entrance 101 and mao bamboon particle to go out
Mouth 102；Revolving bed pyrolysis oven 200 has feed zone 210, preheating zone 220, transition region 230, gas-producing area 240 and discharge zone 250,
Feed zone 210, which has in mao bamboon particle entrance 201, preheating zone 220, transition region 230 and gas-producing area 240, is provided with multiple heat accumulating types
Combustion radiant tube 20, gas-producing area 240 has pyrolysis oil gas vent 202, and discharge zone 250 has pyrolysis bamboo charcoal outlet 203, is pyrolyzed bamboo
Charcoal outlet 203 is connected with spiral discharging device 21, and mao bamboon particle entrance 201 is connected with mao bamboon particle outlet 102；Gas-liquid separation device
300 have pyrolysis oil gas entrance 301, pyrolysis gas outlet 302, mixture export 303；Gas fired-boiler 400 has fuel gas entrance
401 and high-temperature steam outlet 402, fuel gas entrance 401 is connected with pyrolysis gas outlet 302；Have in rotary activated furnace 500 and urge
Change burner 50 and be sequentially connected with catalytic burner 50 and be provided with heating zone 510, region of activation 520 and cooling area 530, heating zone
210 have pyrolysis bamboo charcoal entrance 501, and pyrolysis bamboo charcoal entrance 501 is connected with spiral discharging device 21, is provided with region of activation 520 many
Individual high-temperature steam spout 51, high-temperature steam spout 51 is connected with high-temperature steam outlet 402, and cooling area 530 goes out with high-temperature flue gas
Mouth 502 and activated carbon outlet 503.
It is described in detail below with reference to Fig. 3~5 pair system for preparing activated carbon according to embodiments of the present invention：
Embodiments in accordance with the present invention, breaker 100 has mao bamboon entrance 101 and mao bamboon particle outlet 102, crushes dress
Put 100 to be suitable to mao bamboon carrying out break process, to obtain mao bamboon particle.Specifically, the bamboo charcoal ash content in mao bamboon is extremely low, is system
The quality raw materials of standby activated carbon, mao bamboon waste material, leftover pieces, intermountain are discarded unserviceable in traditional mao bamboon processing method such as withered bamboo
Mao bamboon material, can be used to prepare activated carbon by the method for the present invention.Embodiments in accordance with the present invention, are carried out to mao bamboon
Before pyrolysis processing, mao bamboon is subjected to break process first, it is possible thereby to significantly improve the efficiency of follow-up pyrolysis processing.
Embodiments in accordance with the present invention, the particle diameter of mao bamboon particle is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, the particle diameter of mao bamboon particle can be 50~100mm.Invention
People is had found, mao bamboon is crushed into the particle diameter, the advantage of revolving bed pyrolysis oven can be given full play in follow-up pyrolysis processing, greatly
Improve the efficiency of resource utilization and pyrolysis processing in ground；And if mao bamboon is crushed into smaller particle, then can make break process
Difficulty and cost increase.
Embodiments in accordance with the present invention, revolving bed pyrolysis oven 200 have feed zone 210, preheating zone 220, transition region 230,
Gas-producing area 240 and discharge zone 250, feed zone 210 have mao bamboon particle entrance 201, preheating zone 220, transition region 230 and gas-producing area
Multiple heat storage type combustion radiant tubes 20 are provided with 240, gas-producing area 240 has pyrolysis oil gas vent 202, and discharge zone 250 has
Bamboo charcoal outlet 203 is pyrolyzed, pyrolysis bamboo charcoal outlet 203 is connected with spiral discharging device 21, and mao bamboon particle entrance 201 goes out with mao bamboon particle
Mouth 102 is connected, and revolving bed pyrolysis oven 200 is suitable to supply the mao bamboon particle obtained in breaker 100 to revolving bed pyrolysis oven
Pyrolysis processing is carried out, to obtain pyrolysis oil gas and to be pyrolyzed bamboo charcoal.
Embodiments in accordance with the present invention, can set preheating zone by adjusting the aperture of heat storage type combustion radiation pipe burner tip
220 temperature is not higher than 200 degrees Celsius, and the temperature of transition region 230 is 200~450 degrees Celsius, the temperature of gas-producing area for 400~
700 degrees Celsius.Thus, it is possible to significantly improve the efficiency of pyrolysis processing.
Embodiments in accordance with the present invention, the condition of pyrolysis processing is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, pyrolysis processing can be carried out under 400~700 degrees Celsius.
Inventor has found, if the temperature of pyrolysis processing is too low, the larger molecular organicses in mao bamboon can not be made effectively to be decomposed into Jiao
The micromolecular compounds such as oil, bamboo charcoal；And if the temperature of pyrolysis processing is too high, then can increase energy consumption.
Embodiments in accordance with the present invention, gas-liquid separation device 300 have pyrolysis oil gas entrance 301, pyrolysis gas outlet 302,
Mixture export 303, gas-liquid separation device 300 is suitable to produce revolving bed pyrolysis oven 200 at pyrolysis oil gas progress gas-liquid separation
Reason, to obtain pyrolysis gas, tar and the mixed liquor of bamboo vinegar.Specifically, the pyrolysis gas obtained has certain calorific value, can be with
The fuel gas needed for subsequent step is further used as to be used, and obtained tar and the mixed liquor of bamboo vinegar can be stored
And it is for sale.
Embodiments in accordance with the present invention, gas fired-boiler 400 has fuel gas entrance 401 and high-temperature steam outlet 402, fuel
Gas entrance 401 is connected with pyrolysis gas outlet 302, and gas fired-boiler 400 is suitable to utilize the pyrolysis gas obtained in gas-liquid separation device 300
A part burnt as fuel gas, to obtain high-temperature steam.Embodiments in accordance with the present invention, obtained high-temperature steam
The quantity of steam needed for subsequent activation processing can be met, so as to reduce the energy consumption of activation process.
Embodiments in accordance with the present invention, pyrolysis gas outlet 302 and the heat storage type combustion radiant tube in revolving bed pyrolysis oven 200
20 be connected, embodiments in accordance with the present invention, pyrolysis gas has certain calorific value, can as heat storage type combustion radiant tube fuel
Gas is used, without being passed through extra fuel gas in addition, so as to reduce the energy of pyrolysis processing in revolving bed pyrolysis oven 200
Consumption.
Embodiments in accordance with the present invention, have in rotary activated furnace 500 catalytic burner 50 and with catalytic burner 50
It is sequentially connected and is provided with heating zone 510, region of activation 520 and cooling area 530, heating zone 210 has pyrolysis bamboo charcoal entrance 501, heat
Solution bamboo charcoal entrance 501 is connected with spiral discharging device 21, and multiple high-temperature steam spouts 51, high-temperature steam are provided with region of activation 520
Spout 51 is connected with high-temperature steam outlet 402, and cooling area 530 has high-temperature flue gas outlet 502 and activated carbon outlet 503, revolution
The pyrolysis bamboo charcoal that formula activation furnace 500 is suitable to obtain revolving bed pyrolysis oven 200 carries out activation process, obtains activated carbon and high temperature cigarette
Gas.Specifically, embodiments in accordance with the present invention, start the catalytic burner in rotary activated furnace, and make mistake therein first
Surplus air coefficient is 2, the pyrolysis gas obtained in S300 is being moistened with the honeycomb-typed steel surface-stable nonflame of catalyst
Burning, so as to transmit heat in the way of radiation into rotary activated furnace, further, steams into pyrolysis bamboo charcoal sprinkling S400
The high-temperature steam that boiler furnace is produced, makes the temperature of pyrolysis bamboo charcoal further raise, while by being contacted with the continuous of high-temperature steam
Constantly activation, generates activated carbon.In addition, the carbon dioxide in swinging pyrolysis oven can also be anti-with the carbon black in pyrolysis bamboo charcoal
Should, so as to improve the quality of the activated carbon prepared, further increase the specific surface area of activated carbon.
Embodiments in accordance with the present invention, pyrolysis gas outlet 302 and the phase of catalytic burner 50 in rotary activated furnace 500
Even, embodiments in accordance with the present invention, pyrolysis gas has certain calorific value, can be subject to profit as the fuel gas of catalytic burner
With without being passed through extra fuel gas in addition, so as to reduce pyrolysis processing and energy consumption in rotary activated furnace 500.
Embodiments in accordance with the present invention, the condition of activation process is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, activation process is completed under 800~950 degrees Celsius.
Inventor is had found, activation process is carried out using the temperature, what the efficiency and raising that can significantly improve activation process were prepared
The quality of activated carbon.
Further, the high-temperature flue gas produced in embodiments in accordance with the present invention, S500 burns with preparing supply to catalysis
The pyrolysis gas of device is carried out after heat exchange processing, the qualified discharge after cyclone dust removal.Due to being activated using catalytic burner to swinging
Stove is heated, and pollutant load is extremely low in the tail gas after high-temperature flue gas removing dust, and wherein CO contents are not higher than 4 milligrams/cube
Rice, NOxContent is not higher than 10 milligrams/cubic metre.
With reference to Fig. 5, the system for preparing activated carbon according to embodiments of the present invention further comprises：Heat exchanger 600.
Embodiments in accordance with the present invention, heat exchanger 600 has pyrolysis gas entrance 601, high temperature pyrolysis gas outlet 602, high temperature
Smoke inlet 603 and low-temperature flue gas outlet 604, the phase of pyrolysis gas outlet 302 of pyrolysis gas entrance 601 and gas-liquid separation device 300
Even, high temperature pyrolysis gas outlet 602 is connected with the catalytic burner 50 in rotary activated furnace 500, high-temperature flue gas entry 603 and drop
The high-temperature flue gas outlet 502 of warm area 530 is connected, and heat exchanger 600 is suitable to supplying pyrolysis gas to before catalytic burner 50, in advance
Heat exchange processing first is carried out through pyrolysis gas and high-temperature flue gas, to be heated using high-temperature flue gas to pyrolysis gas.Specifically, high temperature
Flue gas by 500 pairs of pyrolysis bamboo charcoals of rotary activated furnace produce in activated process, with higher temperature, by carrying out
Heat exchange handle, the calorific value of pyrolysis gas can be effectively improved, reached when pyrolysis gas burn in catalytic burner 50 and
The equal exothermal effect of natural gas.
Thus, after the system for preparing activated carbon according to embodiments of the present invention crushes mao bamboon by using breaker,
Supply to revolving bed pyrolysis oven carries out pyrolysis processing, obtains pyrolysis oil gas and is pyrolyzed bamboo charcoal, pyrolysis oil gas is obtained after gas-liquid separation
To pyrolysis gas, tar and bamboo vinegar, wherein tar and bamboo vinegar can externally be sold, and a part of of pyrolysis gas can be used as combustion
Material gas is supplied to gas fired-boiler, gas fired-boiler burning is produced high-temperature steam, another part of pyrolysis gas can be respectively as combustion
Material gas is supplied to the catalytic burner in the heat storage type combustion radiant tube and/or rotary activated furnace in revolving bed pyrolysis oven, from
Without for gas fired-boiler, heat storage type combustion radiant tube and catalytic burner external energy, and then by high-temperature steam and mao bamboon heat
The pyrolysis bamboo charcoal that solution is obtained supplies to rotary activated furnace and carries out activation process, obtains activated carbon and high-temperature flue gas.It is computed, it is raw
Production 1t activated carbons need 2t high-temperature steams and 2.5~3t to be pyrolyzed bamboo charcoal.The system realizes making full use of for mao bamboon, by mao bamboon heat
The activated carbon that bamboo charcoal deep processing is high added value is solved, and energy consumption is relatively low, it is environmentally friendly, it is particularly suitable for large-scale promotion.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only description
Property, without limiting the present invention in any way.
Embodiment 1
It is 327.47m by heap density3It is 50mm or so that/kg, moisture content the 6.34wt% withered bamboo pole of mao bamboon, which are crushed to particle diameter,
Bulk, sent into stove and be pyrolyzed by the feed zone of revolving bed pyrolysis oven.Revolving bed rotates a circle used time 90min, in burner hearth
Temperature Distribution is：150~200 DEG C of preheating zone；250~450 DEG C of transition region；500~700 DEG C of gas-producing area.Pyrolysis gas after pyrolysis,
The yield of pyrolysis bamboo charcoal, tar and bamboo vinegar is shown in Table 1, and the Industrial Analysis and elementary analysis for being pyrolyzed bamboo charcoal are shown in Table 2, the gas of pyrolysis gas
Body composition and calorific value are shown in Table 3.The temperature that is passed through in rotary activated furnace, rotary activated furnace of bamboo charcoal will be pyrolyzed more than 800 DEG C,
Pass through catalytic combustion technology so that oxygen content is 9% in rotary activated furnace, opens high-temperature steam entrance so that pyrolysis bamboo charcoal
It is 1.5 with high-temperature steam ratio:1, pyrolysis bamboo charcoal rises to 800 DEG C by 600 DEG C in heating zone, and is rotated into activation with body of heater
Area, is now pyrolyzed bamboo charcoal and after vapor haptoreaction, temperature is quickly raised to 950 DEG C, and enters drop by 30min activation
Warm area, generates the activated carbon of high-quality, and its iodine number is 1022mg/g.
Embodiment 2
It is 239.60m by heap density3It is 50mm or so that/kg, moisture content the 6.38wt% withered bamboo point of mao bamboon, which are crushed to particle diameter,
Broken branch, sent into stove and be pyrolyzed by the feed zone of revolving bed pyrolysis oven.Revolving bed rotates a circle used time 90min, in burner hearth
Temperature Distribution is：150~200 DEG C of preheating zone；250~450 DEG C of transition region；500~700 DEG C of gas-producing area.Pyrolysis gas after pyrolysis,
The yield of pyrolysis bamboo charcoal, tar and bamboo vinegar is shown in Table 1, and the Industrial Analysis and elementary analysis for being pyrolyzed bamboo charcoal are shown in Table 2, the gas of pyrolysis gas
Body composition and calorific value are shown in Table 3.The temperature that is passed through in rotary activated furnace, rotary activated furnace of bamboo charcoal will be pyrolyzed more than 800 DEG C,
Pass through catalytic combustion technology so that oxygen content is 9% in rotary activated furnace, opens high-temperature steam entrance so that pyrolysis bamboo charcoal
It is 1.5 with high-temperature steam ratio:1, pyrolysis bamboo charcoal rises to 800 DEG C by 600 DEG C in heating zone, and is rotated into activation with body of heater
Area, is now pyrolyzed bamboo charcoal and after vapor haptoreaction, temperature is quickly raised to 950 DEG C, and enters drop by 30min activation
Warm area, generates the activated carbon of high-quality, and its iodine number is 1158mg/g.
Embodiment 3
It is 361.73m by heap density3It is 50mm or so that/kg, moisture content the 6.77wt% fresh bamboo pole of mao bamboon, which are crushed to particle diameter,
It is cylindric, sent into stove and be pyrolyzed by the feed zone of revolving bed pyrolysis oven.Revolving bed rotates a circle used time 90min, in burner hearth
Temperature Distribution be：150~200 DEG C of preheating zone；250~450 DEG C of transition region；500~700 DEG C of gas-producing area.Pyrolysis after pyrolysis
The yield of air and heat solution bamboo charcoal, tar and bamboo vinegar is shown in Table 1, and the Industrial Analysis and elementary analysis for being pyrolyzed bamboo charcoal are shown in Table 2, pyrolysis gas
Gas componant and calorific value be shown in Table 3.Bamboo charcoal will be pyrolyzed and be passed through temperature in rotary activated furnace, rotary activated furnace at 800 DEG C
More than, pass through catalytic combustion technology so that oxygen content is 9% in rotary activated furnace, opens high-temperature steam entrance so that pyrolysis
Bamboo charcoal and high-temperature steam ratio are 1.5:1, pyrolysis bamboo charcoal rises to 800 DEG C in heating zone by 600 DEG C, and is rotated into work with body of heater
Change area, be now pyrolyzed bamboo charcoal and after vapor haptoreaction, temperature is quickly raised to 950 DEG C, and enters by 30min activation
Cooling area, generates the activated carbon of high-quality, and its iodine number is 1220mg/g.
Products collection efficiency after each position pyrolysis of the mao bamboon of table 1.
| Material | Biomass carbon/% | Bio-oil/% | Pyrolkigneous liquid/% | Biological fuel gas/% |
| Withered bamboo pole | 29.10 | 8.75 | 26.76 | 35.39 |
| Withered bamboo branch | 25.29 | 8.50 | 27.25 | 38.96 |
| Fresh bamboo pole | 27.25 | 9.51 | 30.75 | 32.49 |
The mao bamboon different material of table 2. is pyrolyzed bamboo charcoal Industrial Analysis and elementary analysis and calorific value
The mao bamboon different material pyrolysis gas component of table 3. and calorific value
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of method for preparing activated carbon, it is characterised in that including：
(1) mao bamboon is subjected to break process, to obtain mao bamboon particle；
(2) the mao bamboon particle is supplied to revolving bed pyrolysis oven and carries out pyrolysis processing, to obtain pyrolysis oil gas and to be pyrolyzed bamboo
Charcoal；
(3) by it is described pyrolysis oil gas supply to gas-liquid separation device carry out gas-liquid separation processing, so as to obtain pyrolysis gas, tar and
The mixed liquor of bamboo vinegar；
(4) supplied a part for the pyrolysis gas as fuel gas to gas fired-boiler, to obtain high-temperature steam；And
(5) the pyrolysis bamboo charcoal and the high-temperature steam are supplied to rotary activated furnace, to enter to the pyrolysis bamboo charcoal
Row activation process, obtains activated carbon and high-temperature flue gas.
2. according to the method described in claim 1, it is characterised in that in step (1), the particle diameter of the mao bamboon particle be 50~
100mm。
3. according to the method described in claim 1, it is characterised in that in step (2), the temperature of the pyrolysis processing be 400~
700 degrees Celsius.
4. according to the method described in claim 1, it is characterised in that further comprise：
(6) another part of the pyrolysis gas is respectively fed to the heat storage type combustion in the revolving bed pyrolysis oven as fuel
Catalytic burner in radiant tube and/or the rotary activated furnace.
5. method according to claim 4, it is characterised in that further comprise：
(7) supplied by the pyrolysis gas to before the catalytic burner, in advance by the pyrolysis gas and the high-temperature flue gas
Heat exchange processing is carried out, to be heated using the high-temperature flue gas to the pyrolysis gas.
6. according to the method described in claim 1, it is characterised in that in step (5), the activation process is taken the photograph 800~950
Completed under family name's degree.
7. a kind of system for implementing the method any one of claim 1~6, it is characterised in that including：
Breaker, the breaker has mao bamboon entrance and the outlet of mao bamboon particle；
Revolving bed pyrolysis oven, the revolving bed pyrolysis oven has feed zone, preheating zone, transition region, gas-producing area and discharge zone, described
Feed zone, which has, is provided with multiple heat accumulating type combustions in mao bamboon particle entrance, the preheating zone, the transition region and the gas-producing area
Radiant tube is burnt, the gas-producing area has pyrolysis oil gas vent, and the discharge zone has the outlet of pyrolysis bamboo charcoal, and the pyrolysis bamboo charcoal goes out
Mouth is connected with spiral discharging device, and the mao bamboon particle entrance is connected with mao bamboon particle outlet；
Gas-liquid separation device, the gas-liquid separation device has pyrolysis oil gas entrance, pyrolysis gas outlet, mixture export；
Gas fired-boiler, the gas fired-boiler has fuel gas entrance and high-temperature steam outlet, the fuel gas entrance and the heat
Vent one's spleen to export and be connected；
There is catalytic burner in rotary activated furnace, the rotary activated furnace and be sequentially connected with the catalytic burner and set
Heating zone, region of activation and cooling area are equipped with, the heating zone has pyrolysis bamboo charcoal entrance, the pyrolysis bamboo charcoal entrance and the spiral shell
Screw out glassware to be connected, multiple high-temperature steam spouts are provided with the region of activation, the high-temperature steam spout steams with the high temperature
Vapor outlet is connected, and the cooling area has high-temperature flue gas outlet and activated carbon outlet.
8. system according to claim 7, it is characterised in that further comprise：The pyrolysis gas outlet and the rotation
Heat storage type combustion radiant tube in bed pyrolysis oven is connected.
9. system according to claim 7, it is characterised in that further comprise：The pyrolysis gas outlet and the revolution
Catalytic burner in formula activation furnace is connected.
10. system according to claim 7, it is characterised in that further comprise：Heat exchanger, the heat exchanger has heat
Venting one's spleen, entrance, high temperature pyrolysis gas are exported, high-temperature flue gas entry and low-temperature flue gas are exported, the pyrolysis gas entrance and the gas-liquid point
Pyrolysis gas outlet from device is connected, the high temperature pyrolysis gas outlet and the catalytic burner phase in the rotary activated furnace
Even, the high-temperature flue gas entry is connected with the high-temperature flue gas outlet of the cooling area.
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| CN107555431A (en) * | 2017-09-13 | 2018-01-09 | 浙江佶竹生物科技有限公司 | A kind of bamboo matter column-shaped active carbon and its preparation method and application |
| CN108187612A (en) * | 2017-12-18 | 2018-06-22 | 北京源农炭肥技术有限公司 | A kind of preparation method and applications of charcoal base soil-repairing agent |
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| CN115072718A (en) * | 2022-05-09 | 2022-09-20 | 湘潭大学 | Novel environment-friendly process for preparing activated carbon by using bamboo vinegar |
| CN116254124A (en) * | 2022-11-01 | 2023-06-13 | 国家电投集团科学技术研究院有限公司 | Bamboo biomass poly-generation method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107555431A (en) * | 2017-09-13 | 2018-01-09 | 浙江佶竹生物科技有限公司 | A kind of bamboo matter column-shaped active carbon and its preparation method and application |
| CN107555431B (en) * | 2017-09-13 | 2019-09-13 | 李文贵 | A kind of bamboo matter column-shaped active carbon and its preparation method and application |
| CN108187612A (en) * | 2017-12-18 | 2018-06-22 | 北京源农炭肥技术有限公司 | A kind of preparation method and applications of charcoal base soil-repairing agent |
| CN111015858A (en) * | 2019-11-25 | 2020-04-17 | 北京林业大学 | Novel mildew-proof recombined bamboo based on pyrolysis oil phenolic resin and preparation method thereof |
| CN110980729A (en) * | 2019-12-03 | 2020-04-10 | 新奥生物质能(天津)有限公司 | Activated carbon production system and method |
| CN112158843A (en) * | 2020-09-08 | 2021-01-01 | 新奥生物质能(天津)有限公司 | Preparation system and preparation method of biomass activated carbon |
| CN115072718A (en) * | 2022-05-09 | 2022-09-20 | 湘潭大学 | Novel environment-friendly process for preparing activated carbon by using bamboo vinegar |
| CN116254124A (en) * | 2022-11-01 | 2023-06-13 | 国家电投集团科学技术研究院有限公司 | Bamboo biomass poly-generation method and system |
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