CN113292069A - Composite active carbon and preparation method thereof - Google Patents
Composite active carbon and preparation method thereof Download PDFInfo
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- CN113292069A CN113292069A CN202110635689.5A CN202110635689A CN113292069A CN 113292069 A CN113292069 A CN 113292069A CN 202110635689 A CN202110635689 A CN 202110635689A CN 113292069 A CN113292069 A CN 113292069A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 title abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 39
- 239000011230 binding agent Substances 0.000 claims abstract description 30
- 239000002023 wood Substances 0.000 claims abstract description 29
- 239000005539 carbonized material Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 78
- 238000003763 carbonization Methods 0.000 claims description 44
- 238000012216 screening Methods 0.000 claims description 23
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 230000004913 activation Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 238000004898 kneading Methods 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 6
- 244000060011 Cocos nucifera Species 0.000 claims description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 6
- 239000003830 anthracite Substances 0.000 claims description 6
- 239000002802 bituminous coal Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 235000009496 Juglans regia Nutrition 0.000 claims description 5
- 235000009827 Prunus armeniaca Nutrition 0.000 claims description 5
- 244000018633 Prunus armeniaca Species 0.000 claims description 5
- 238000004939 coking Methods 0.000 claims description 5
- 239000002737 fuel gas Substances 0.000 claims description 5
- 235000020234 walnut Nutrition 0.000 claims description 5
- 239000002028 Biomass Substances 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000010000 carbonizing Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000012778 molding material Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims 2
- 240000007049 Juglans regia Species 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000005453 pelletization Methods 0.000 claims 1
- 241000758789 Juglans Species 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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Classifications
-
- 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
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- 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
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
-
- 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
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/33—Preparation characterised by the starting materials from distillation residues of coal or petroleum; from petroleum acid sludge
-
- 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
Abstract
The invention discloses a composite activated carbon and a preparation method thereof, wherein the composite activated carbon comprises the following raw materials: raw coal, a wood carbonized material and a binder, wherein the raw coal, the wood carbonized material and the binder are required to be mixed according to the parts by weight of (20-70) to (70-20): (8-18); the invention also discloses a preparation method of the composite activated carbon; the invention has the special advantages of fully utilizing the wood and coal raw materials, adopting different proportions in different application fields, and finally the novel composite active carbon product plays the role of coal active carbon and wood active carbon 1+1 > 2.
Description
Technical Field
The invention relates to the technical field of combination of coal-based activated carbon and wood-based activated carbon, in particular to composite activated carbon and a preparation method thereof.
Background
The active carbon is used as a functional adsorption material with strong adsorption capacity, and is widely applied to the fields of flue gas treatment, air purification, food and beverage, medicine, water treatment, chemical industry and the like. Along with the gradual enhancement of health and environmental awareness of people in recent years, activated carbon is promoted to be more and more pursued by consumers, enterprises for developing new products of activated carbon and expanding the application field of activated carbon products are increased year by year, and the types of the activated carbon products are more and more.
With the continuous improvement of the quality of life of people and the rapid development of industry, the overall demand of the activated carbon market tends to rise year by year, becomes a new economic growth point in domestic and foreign markets, is expected to be favored by long-term customers, and certainly faces more development opportunities and challenges.
Many activated carbon production enterprises pay attention to development of single activated carbon such as coal-based activated carbon, wood-based activated carbon, civil activated carbon, military activated carbon and the like, even if coal blending (anthracite, bituminous coal and coking coal) is single 'coal', the boundary line of raw materials is not broken, and the coal blending is still in single raw material and characteristic classification, so that the functions of the existing activated carbon are single, and improvement is needed.
Disclosure of Invention
The invention aims to provide a composite activated carbon and a preparation method thereof, which aim to solve the problem that the single traditional manufacturing and preparation method provided by the background technology only can exert the respective advantages of the wood activated carbon and the coal activated carbon and cannot exert unique functions.
In order to achieve the purpose, the invention provides the following technical scheme: the composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (20-70):(20-70): (8-18).
Preferably, the raw coal is one or more of anthracite, bituminous coal and coking coal, the wood carbonization material is one or more of coconut shell carbonization material, walnut shell carbonization material, apricot shell carbonization material, wood chip carbonization material and biomass carbonization material, and the binder is one or more of tar binder or non-tar binder.
Preferably, the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (30-50):(30-50): (10-15).
The invention also discloses a preparation device of the composite activated carbon, which is used for preparing the composite activated carbon and mainly comprises the following equipment:
the mixer is used for matching materials;
a mill for finely pulverizing the raw material;
a kneader for mixing the materials;
a hydraulic or granulation forming machine for forming the material;
the screening device is used for screening the hydroformed material;
the vibrating feeder is used for conveying the hydroformed material;
a rotary carbonization furnace for carbonizing the molding material;
a heat exchange chamber for performing heat exchange;
an SLEP activation furnace for expanding pores;
wherein, be provided with screw conveyer between kneading machine and hydraulic pressure or granulation make-up machine, hydraulic pressure or granulation make-up machine output connection screening plant's input, screening plant's output passes through the vibrating feeder and connects the rotation retort, is provided with the combustion chamber in the rotation retort, the combustion chamber side is provided with the discharge chamber and provides the gas transfer passage of heat source for the combustion chamber, still is connected with the cooling conveyor who is used for cooling and carrying the product on the discharge chamber, the lifting machine is connected to the cooling conveyor other end, the SLEP activation furnace is connected to the other end of lifting machine, still is connected with on the combustion chamber the heat transfer chamber, be connected with the draught fan on the heat transfer chamber, the draught fan is connected with a tail gas clean system that goes, still is connected with the clout collecting bin of being connected with mixer or screw conveyer on screening plant, the output of the SLEP activation furnace is connected with a product bin, and the output of the product bin is connected with a screening and packaging machine.
Preferably, a settling chamber which is used for pre-collecting dust and can protect a flue system from being unblocked is arranged between the heat exchange chamber and the rotary carbonization furnace, and the settling chamber is communicated with the combustion chamber and the heat exchange chamber.
The invention also discloses a preparation method of the composite activated carbon, which comprises the step of adopting a preparation device of the composite activated carbon, which is characterized in that: the method specifically comprises the following steps:
s1, matching grinding: adding the wood carbonized material and the raw coal which meet the process requirements into a matching bin according to a preset proportion, performing proportioning treatment and mixing, starting a system program of a pulverizer, performing pulverized powder treatment on the mixed material, and feeding the pulverized material into the next process;
s2, kneading step: conveying the mixed powdered coal meeting the process requirements into a kneader, adding a binder according to a preset proportion, and kneading and stirring;
s3, forming: molding the kneaded paste material by a hydraulic molding machine, wherein the gauge pressure of the hydraulic molding machine is controlled to be 120-250kg/cm2Then, removing excess materials from the layering granules discharged from the hydraulic forming machine through a screening device, collecting the excess materials below the screen in an excess material collecting bin, and recycling the excess materials to a mixing machine or a screw conveyor for layering again after collection;
s4, adding the qualified layering material into a rotary carbonization furnace through a vibrating feeder, generating high temperature by using a combustion chamber in the rotary carbonization furnace, driving away moisture and partial volatile components by the layering material in the furnace in a manner of reverse contact with high-temperature gas in the combustion chamber in a rotary moving manner, and simultaneously improving the initial adsorption performance of the product and endowing the product with enough mechanical strength; and enters a discharging chamber to prepare for discharging; the layering material discharged from the discharging chamber is cooled by a cooling and conveying device and then enters the SLEP activation furnace through a lifting machine;
s5: the appropriate composite activated carbon carbonized product is chemically reacted with water vapor or carbon dioxide at high temperature by the SLEP activation furnace to prepare a composite activated carbon activation material which meets the satisfaction of customers; then the materials enter a product bin and are packaged into single packaging bags of 25-500 or 1000 tons by a screening and packaging machine, and the packaging bags are plastic bags lined with woven bags or coated inside the plastic bags.
Preferably, in step S4, the rotation speed of the rotary carbonization furnace is required to be 0.5-2.5rpm, the heating temperature is 150-250 ℃ using the temperature requirement of the fuel gas inlet, 500-650 ℃ using the temperature requirement of the fuel gas outlet, and the heating time is 45-75 min.
Preferably, the kneading time at step S2 is 12 to 15 minutes, and the kneading temperature is 40 to 55 ℃.
Preferably, the heating time of the rotary heating furnace in the step S4 is 55-65min, and the heating temperature is 180-560 ℃.
Preferably, in step S5, the carbonized product of the composite activated carbon is chemically reacted with the added amount of water vapor or carbon dioxide of 900-.
Compared with the prior art, the invention has the following beneficial effects: the existing pure wood activated carbon has lighter bulk density and cannot meet the requirement; the ignition point can not meet the requirement; the carbon tetrachloride adsorption value of the coconut shell carbon is not increased, but the invention can meet the requirements, the stacking density is increased, the adsorption capacity is improved, the heavy metal content of the coal carbon is reduced, the ignition point is improved, and the safety grade in the organic steam application field is increased!
Drawings
Fig. 1 is a schematic connection diagram of a composite activated carbon preparation apparatus in example 1.
In the figure: a mixer 1; a pulverizer 2; a kneader 3; a residual material collecting bin 4; a hydraulic or granulation former 5; a screening device 6; a vibrating feeder 7; a rotary carbonization furnace 8; a heat exchange chamber 9; an SLEP activation furnace 10; a screw conveyor 11; a combustion chamber 12; a discharge chamber 13; a gas delivery channel 14; a cooling conveyor 15; a hoist 16; an induced draft fan 17; a tail gas removal purification system 18; a settling chamber 19; the output is connected with a product bin 20; a sieving and packing machine 21.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment provided by the invention comprises the following steps: a composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (20-70):(20-70): (8-18).
Preferably, the raw coal is made of one or more of anthracite, bituminous coal and coking coal, the ligneous carbonization material is one or more of coconut shell carbonization material, walnut shell carbonization material, apricot shell carbonization material, wood chip carbonization material and biomass carbonization material, the binder is one or more of tar binder or non-tar binder, in this embodiment, the raw coal is made of anthracite, bituminous coal and coking coal, the ligneous carbonization material is made of coconut shell carbonization material, walnut shell carbonization material, apricot shell carbonization material, wood chip carbonization material and biomass carbonization material, and the binder is tar binder or non-tar binder.
Preferably, the raw coal, the wood carbonized material and the binder are mixed according to the following parts: 35:40: 12.
as shown in fig. 1, the embodiment also discloses a preparation device of the composite activated carbon, which is used for preparing the composite activated carbon and mainly comprises the following equipment:
the mixer 1 is used for matching materials;
a mill 2 for finely pulverizing the raw material;
a kneader 3 for mixing the materials;
a hydraulic or granulation forming machine 5 for forming the material;
a screening device 6 for screening the hydroformed material;
a vibrating feeder 7 for conveying the hydroformed material;
a rotary carbonization furnace 8 for carbonizing the molding material;
a heat exchange chamber 9 for heat exchange;
an SLEP activation furnace 10 for expanding pores;
wherein, a screw conveyer 11 is arranged between the kneader 3 and the hydraulic or granulating forming machine 5, the hydraulic or granulating forming machine 5 outputs and connects the input end of the sieving device 6, the output end of the sieving device 6 is connected with the rotary carbonization furnace 8 through the vibrating feeder 7, a combustion chamber 12 is arranged in the rotary carbonization furnace 8, the side edge of the combustion chamber 12 is provided with a discharge chamber 13 and a gas conveying channel 14 for providing a heat source for the combustion chamber 12, the discharge chamber 13 is also connected with a cooling and conveying device 15 for cooling and conveying the product, the other end of the cooling and conveying device 15 is connected with a lifter 16, the other end of the lifter 16 is connected with the SLEP activation furnace 10, the combustion chamber 12 is also connected with the heat exchange chamber 9, the heat exchange chamber 9 is connected with an induced draft fan 17, the induced draft fan 17 is connected with an exhaust gas removing purification system 18, the screening device 6 is also connected with a residual material collecting bin 4 connected with the mixer 1 or the screw conveyor 11, the output of the SLEP activation furnace 10 is connected with a product bin 20, and the output of the product bin 20 is connected with a screening and packaging machine 21.
Preferably, a settling chamber 19 which is used for collecting dust in advance and can protect a flue system from being unblocked is arranged between the heat exchange chamber 9 and the rotary carbonization furnace 8, and the settling chamber 19 is communicated with the combustion chamber 12 and the heat exchange chamber 9.
The embodiment also discloses a preparation method of the composite activated carbon, which comprises the step of adopting the preparation device of the composite activated carbon, and is characterized in that: the method specifically comprises the following steps:
s1, matching grinding: adding the wood carbonized material and the raw coal which meet the process requirements into a matching bin 1 according to a preset proportion, performing proportioning treatment and mixing, starting a system program of a pulverizer 2 at the moment, performing pulverizing treatment on the mixed material, and feeding the pulverized material into the next process;
s2, kneading step: conveying the mixed powdered coal meeting the process requirements into a kneader 3, adding a binder according to a preset proportion, and kneading and stirring;
s3, forming: molding the kneaded paste material by a hydraulic molding machine 5, wherein the gauge pressure of the hydraulic molding machine 6 is controlled to be 120-2Then fromResidual materials of the layering granules from the hydraulic forming machine 6 are removed through a screening device 6, the residual materials under the screen can enter a residual material collecting bin 4 for collection, and the residual materials can be recovered to a mixing machine 3 or a screw conveyor 5 for layering again after being collected;
s4, adding qualified layering materials into the rotary carbonization furnace 8 through the vibrating feeder 7, generating high temperature by using the combustion chamber 12 in the rotary carbonization furnace 8, driving away moisture and partial volatile matters in the layering materials in a mode of reversely contacting high-temperature gas in the combustion chamber 12 in a rotary moving mode in the furnace, and simultaneously improving the initial adsorption performance of the product and endowing enough mechanical strength; and enters the discharging chamber 13 to prepare for discharging; the layering material discharged from the discharging chamber 13 is cooled by a cooling and conveying device 15 and then enters the SLEP activation furnace 10 through a lifter 16;
s5: the appropriate composite activated carbon carbonized product is subjected to chemical action with water vapor or carbon dioxide at high temperature by the SLEP activation furnace 10 to prepare a composite activated carbon activation material which meets the satisfaction of customers; then the materials enter a product bin 17 and are packaged into single packaging bags of 25-500 or 1000 tons by a screening and packaging machine 21, and the packaging bags are woven bags lined with plastic bags or plastic-coated inside the plastic bags.
Considering as the best scheme, in order to ensure the quality of the later-stage product, in step S4, the rotation speed of the rotary carbonization furnace is required to be 0.5-2.5rpm, the heating temperature is required to be 150-.
Preferably, the kneading time at step S2 is 12 to 15 minutes, and the kneading temperature is 40 to 55 ℃.
Preferably, the heating time of the rotary heating furnace in step S4 is 55-65min, the heating temperature is 180-560 ℃, the optimal heating time of the rotary heating furnace in this embodiment is 60min, and the optimal heating temperature is 540 ℃.
Preferably, in step S5, the carbonized product of the composite activated carbon is chemically reacted with the added amount of water vapor or carbon dioxide of 900-.
Preferably, the blending method in step S1 is continuous blending, and therefore, the continuous blending machine 1 needs to be used.
Example 2:
the embodiment provided by the invention comprises the following steps: a composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (20-70):(20-70): (8-18).
The composite activated carbon described in the embodiment comprises the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: 70:70: 18.
preferably, the raw coal is anthracite and bituminous coal, the wood carbonized material is coconut shell carbonized material, walnut shell carbonized material and apricot shell carbonized material, and the binder is tar binder.
Example 3:
the embodiment provided by the invention comprises the following steps: a composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts by weight of 32: 55: 13.
example 4:
the embodiment provided by the invention comprises the following steps: a composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are 55:27 parts by weight: 18.
example 5:
the embodiment provided by the invention comprises the following steps: a composite activated carbon comprises the following raw materials: the raw coal, the wood carbonized material and the binder are 20:65 parts by weight: 15.
the following is the laboratory data of the advantages and disadvantages of the corresponding embodiments of the present invention compared to the existing composite activated carbon, and the following table is established:
the experimental data prove that: the invention plays the role of preparing and compounding the active carbon, and finally the new active carbon-compound active carbon plays a greater role: increase the bulk density, thereby increasing the adsorption capacity, reducing the heavy metal content of the coal, and increasing the ignition point, thereby increasing the safety grade in the application field of organic steam!
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The composite activated carbon is characterized by comprising the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (20-70):(20-70): (8-18).
2. The composite activated carbon as claimed in claim 1, wherein: the raw coal is made of one or more of anthracite, bituminous coal and coking coal, the wood carbonization material is one or more of coconut shell carbonization material, walnut shell carbonization material, apricot shell carbonization material, wood chip carbonization material and biomass carbonization material, and the binder is one or more of tar binder or non-tar binder.
3. The composite activated carbon is characterized by comprising the following raw materials: the raw coal, the wood carbonized material and the binder are mixed according to the following parts: (30-50):(30-50): (10-15).
4. The preparation device of the composite activated carbon is characterized in that: the device is used for preparing the composite activated carbon as claimed in claim 1, and mainly comprises the following equipment:
the mixer (1) is used for mixing materials;
a mill (2) for finely pulverizing the raw material;
a kneader (3) for mixing the materials;
a hydraulic or pelletizing forming machine (5) for forming the material;
a screening device (6) for screening the hydroformed material;
a vibrating feeder (7) used for conveying the hydroformed material;
a rotary carbonization furnace (8) for carbonizing the molding material;
a heat exchange chamber (9) for heat exchange;
an SLEP activation furnace (10) for expanding pores;
wherein, a screw conveyor (11) is arranged between the kneader (3) and the hydraulic or granulation forming machine (5), the output end of the hydraulic or granulation forming machine (5) is connected with the input end of the screening device (6), the output end of the screening device (6) is connected with the rotary carbonization furnace (8) through the vibrating feeder (7), a combustion chamber (12) is arranged in the rotary carbonization furnace (8), the side edge of the combustion chamber (12) is provided with a discharge chamber (13) and a fuel gas conveying channel (14) for providing a heat source for the combustion chamber (12), the discharge chamber (13) is also connected with a cooling and conveying device (15) for cooling and conveying products, the other end of the cooling and conveying device (15) is connected with a lifter (16), the other end of the lifter (16) is connected with the SLEP activation furnace (10), the combustion chamber (12) is also connected with the heat exchange chamber (9), be connected with draught fan (17) on heat transfer chamber (9), draught fan (17) are connected with one and remove tail gas clean system (18), still be connected with on screening plant (6) with the clout collection bin (4) that mix machine (1) or screw conveyer (11) and be connected, at the output connection product feed bin (20) of SLEP activation furnace (10), the output connection screening packagine machine (21) of product feed bin (20).
5. The apparatus for preparing composite activated carbon according to claim 4, wherein: a settling chamber (19) which is used for pre-collecting dust and can protect a flue system to be smooth is arranged between the heat exchange chamber (9) and the rotary carbonization furnace (8), and the settling chamber (19) is communicated with the combustion chamber (12) and the heat exchange chamber (9).
6. A method for producing a composite activated carbon, comprising using the apparatus for producing a composite activated carbon according to any one of claims 4 to 5, characterized in that: the method specifically comprises the following steps:
s1, matching grinding: adding the wood carbonized material and the raw coal which meet the process requirements into a matching bin (1) according to a preset proportion, carrying out proportioning treatment and mixing, starting a system program of a flour mill (2), carrying out flour milling treatment on the mixed material, and sending the milled material to the next process;
s2, kneading step: conveying the mixed powdered coal meeting the process requirements into a kneader (3), adding a binder according to a preset proportion, and kneading and stirring;
s3, forming: molding the kneaded paste material by a hydraulic molding machine (5), wherein the gauge pressure of the hydraulic molding machine (6) is controlled at 120-2Then, removing excess materials from the layering granules discharged from the hydraulic forming machine (6) through a screening device (6), enabling the screened excess materials to enter an excess material collecting bin (4) for collection, and recovering the collected excess materials to a mixing machine (3) or a screw conveyor (5) for layering again;
s4, adding qualified layering materials into the rotary carbonization furnace (8) through the vibrating feeder (7), generating high temperature by using a combustion chamber (12) in the rotary carbonization furnace (8), driving away moisture and partial volatile matters in the layering materials in a mode of reversely contacting high-temperature gas in the combustion chamber (12) in a rotary moving mode in the furnace, and simultaneously improving the initial adsorption performance of the product and endowing enough mechanical strength; and enters a discharging chamber (13) to prepare for discharging; the layering material discharged from the discharging chamber (13) is cooled by a cooling and conveying device (15) and then enters the SLEP activation furnace (10) through a lifting machine (16);
s5: the appropriate composite activated carbon carbonized product is chemically reacted with water vapor or carbon dioxide at high temperature by an SLEP activation furnace (10) to prepare a composite activated carbon activation material which meets the satisfaction of customers; then the materials enter a product bin (17) and are packaged into single packaging bags of 25-500 or 1000 tons through a screening and packaging machine (21), and the packaging bags are plastic bags with woven bags lined with plastic or plastic-coated inside the plastic bags.
7. The method for preparing composite activated carbon according to claim 6, wherein: in step S4, the rotation speed of the rotary carbonization furnace is required to be 0.5-2.5rpm, the heating temperature is 150-250 ℃ using the temperature of the fuel gas inlet, 500-650 ℃ using the temperature of the fuel gas outlet, and the heating time is 45-75 min.
8. The method for preparing composite activated carbon according to claim 6, wherein: the kneading time at step S2 was 12 to 15 minutes, and the kneading temperature was 40 to 55 ℃.
9. The method for preparing composite activated carbon according to claim 7, wherein: in step S4, the heating time of the rotary heating furnace is 55-65min, and the heating temperature is 180-560 ℃.
10. The method for preparing composite activated carbon according to claim 6, wherein: in step S5, the carbonized product of the composite activated carbon is chemically reacted with the added amount of water vapor or carbon dioxide of 900-.
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| CN114655955A (en) * | 2022-04-02 | 2022-06-24 | 山西新华防化装备研究院有限公司 | Preparation method of coconut shell based pressed activated carbon |
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