CN1669919A - Method for producing mesopore activated carbon - Google Patents
Method for producing mesopore activated carbon Download PDFInfo
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- CN1669919A CN1669919A CNA2005100106721A CN200510010672A CN1669919A CN 1669919 A CN1669919 A CN 1669919A CN A2005100106721 A CNA2005100106721 A CN A2005100106721A CN 200510010672 A CN200510010672 A CN 200510010672A CN 1669919 A CN1669919 A CN 1669919A
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- activated carbon
- temperature
- tobacco rod
- phosphoric acid
- gas
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 26
- 241000208125 Nicotiana Species 0.000 claims abstract description 25
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 25
- 230000005855 radiation Effects 0.000 claims abstract description 19
- 238000007598 dipping method Methods 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 37
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 23
- 230000004913 activation Effects 0.000 claims description 22
- 239000002910 solid waste Substances 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000005470 impregnation Methods 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003213 activating effect Effects 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 230000008569 process Effects 0.000 description 23
- 230000007420 reactivation Effects 0.000 description 13
- 238000001179 sorption measurement Methods 0.000 description 11
- 229960000907 methylthioninium chloride Drugs 0.000 description 9
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 6
- 239000003610 charcoal Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000005074 zinc chloride Nutrition 0.000 description 4
- 239000011592 zinc chloride Substances 0.000 description 4
- OTBRCBRNTVKMRU-UHFFFAOYSA-N [C].OP(O)(O)=O Chemical group [C].OP(O)(O)=O OTBRCBRNTVKMRU-UHFFFAOYSA-N 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- -1 this Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
Abstract
A method for producing activated carbon with central channels, which comprises the following steps: breaking the tobacco rod abandoned goods, dipping by the phosphorus acid in the concentration of 5-50% in volume, wherein the mass percent between potassium hydroxide solution and tobacco rod abandoned goods is 1.5:1-9:1, the temperature of the solution about 40-60 Deg. C, heating to 500-650 Deg. C in a microwave radiation unit with the radiated power about 2-60 kW, altering activating atmosphere using the mixture gas of both the end gas produced by itself and air as the temperature of materials up to 650 Deg. C, flow ratio of the mixture gas is 100-800 mL/min, and activating time is 3-9 min, then tapping, washing by hot water of the temperature about 80-85 Deg. C and the pH of the materials after washing is 6.5-7, drying and getting the activated carbon with central channel. The volume of central channels reach to 20-85% of the volume of all channels in the activated carbon products.
Description
One, technical field: the present invention relates to a kind of method of producing mesopore activated carbon.Belong to microwave chemical and make the field.
Two, background technology: gac has been widely used in national defence, chemical industry, oil, weaving, food, medicine, nuclear industry, urban construction, environment protection and human lives's all respects at present.Known gac mainly is made up of micropore, contain a spot of mesopore and macropore, middle small molecules to adsorbed gas and liquid is quite favourable, yet for some polymkeric substance, organic electrolyte and inorganic macromolecular absorption, the field poor effect such as preparation of support of the catalyst and electrode material for electric double layer capacitor, thereby structure of activated carbon is had higher requirement, be that gac has higher mesopore content, gac in particular for water treatment requires mesopore content to reach about 20%, with the adsorptive power of raising to macromolecule contaminants such as phenols in the water, so the production of mesopore activated carbon is more and more paid attention to by people.
The production method of known mesopore activated carbon has catalytic activation, interface activation, mixed polymer charing, organogel charing, casting mold charing etc.Wherein inevitably can the lingering section metallic element in the mesopore activated carbon of catalytic activation method preparation, when this gac is used for liquid phase adsorption, metallic element just may enter solution with the ionic form, although its content is very low, is very deleterious in some cases; Yet interface activation, mixed polymer charing and three kinds of methods of organogel charing also are not suitable for to be raw material, to adopt polymkeric substance and high-molecular gel mostly with the tobacco rod waste; The shortcoming of the maximum of casting mold carborization is exactly to remove the processing of template, and this is the process that an expense is high and waste.Thereby develop a kind of more economical effective mesopore activated carbon manufacture method and seem particularly important.
The applicant is in 931146937.2 the patent in the patent No., the method of a kind of " manufacturing powdered activated carbon with microwave radiation method " is disclosed, this method is with wood chip and phosphoric acid or liquor zinci chloridi hybrid infusion, with carrying out pickling, oven dry, pulverizing and screening after the microwave radiation, obtains gac again.There is following problem in this method: (1) is raw material with the wood chip, and cost of material is higher, adds that this raw material is is cost to destroy the forest reserves, and it is not extensive originate, and amount not quite; This method can't be carried out suitability for industrialized production, has limited the popularization of this method.In technological processs such as dipping, pickling, oven dry, used processing condition only are suitable for wood chip.(2) the microwave radiation temperature is at 600～900 ℃, and temperature is higher; (3) control of gac mesopore content does not relate to as yet; Whether the atmosphere of reactivation process does not relate to the activated carbon product performance is influential yet.
The applicant is in 02113270.4 the patent in the patent No., a kind of " microwave radiation tobacco rod solid waste is made process of active carbon " disclosed, this method is pulverized back and liquor zinci chloridi hybrid infusion with tobacco rod, make liquor zinci chloridi corrode tobacco rod inside, carry out microwave radiation heating is adopted in the back, impel the moisture evaporation in the tobacco rod, the zinc chloride volatilization, thereby finish the pore-creating process, its atmosphere must keep the vacuum oxygen deficient atmospheres in reactivation process, entrapped zinc and ash content in pickling and washing removal material dried at last again, obtain activated carbon product after pulverizing and sieving.Compare with the present invention, the one, different to the requirement of raw material and steeping process, the present invention selects the tobacco rod powder that can pass through the 2mm screen cloth for use, and adopts the dipping of heating; The 2nd, the atmosphere difference of being controlled of reactivation process, the present invention has fed tail gas and Air mixing gas for accelerating the erosion of phosphoric acid to charcoal in reactivation process, keep certain oxidizing atmosphere, further control reactivation process, obtain the gac of different mesopore content.Zinc chloride process is made gac, and the method for its control punch structure is to adopt the different tobacco rods and the mass ratio of liquor zinci chloridi, in case mass ratio determines that institute's production structure of activated carbon just determines that the possibility of regulating is little in reactivation process; The 3rd, the present invention can accurately control activation temperature in reactivation process be 500～650 ℃, only related to radiated time in the granted patent, temperature generally will just can make the zinc chloride volatilization in the tobacco rod at 780～950 ℃, activation temperature of the present invention has reduced by 280～450 ℃, can further cut down the consumption of energy; The 4th, the present invention can further strengthen reactivation process by phosphate impregnation, feeding tail gas and air gas mixture, the gac that obtains is the gac of mesopore content prosperity, the resulting gac of granted patent is the higher gac of micro content common on the market, and mesopore content is lower; The 5th, the gaseous corrosion that the present invention produces is less, related in process of production pipeline can adopt steel part, and the gas that granted patent produces is the mixed gas of chlorine, zinc and zinc chloride, and corrodibility is bigger, so will add stupalith in steel part, required cost is higher.
Three, summary of the invention:
The purpose of patent of the present invention is after the tobacco rod solid waste is pulverized, and adopts the phosphoric acid dipping of heating, and finishes heating and activation with microwave radiation thereafter, controls the distribution of mesopore by the adjusting activation phenomenon, thereby produces the gac of controlled mesopore.
The present invention realizes by following technical scheme.
Process flow sheet of the present invention as shown in Figure 1.The tobacco rod solid waste is after pulverizer is pulverized, through the phosphoric acid dipping of heating, send into and carry out microwave radiation in the microwave radiation device, feed tail gas after reaching 500～650 ℃ and Air mixing gas changes activation phenomenon, material hot water wash after the activation obtains activated carbon product after the oven dry.
Invention is finished according to the following steps:
1. raw material tobacco rod solid waste is pulverized to below the 2mm;
2. be 5～50% phosphate impregnations 4～18 hours with volumetric concentration, phosphoric acid solution is 1.5: 1～9: 1 with the ratio of the quality of tobacco rod waste; The temperature of solution is at 40～60 ℃ during dipping;
3. go into when being heated to 500～650 ℃ in the microwave radiation device, the time is 4～10 minutes; To be 2～60kW reach 650 ℃ when temperature of charge to microwave power, feed self output tail gas and Air mixing gas and change activation phenomenon, the volume ratio of air and tail gas is 1: 2～1: 8, and the flow of mixed gas is 100～800mL/min, and ventilation activation time was come out of the stove in 3～9 minutes.Ratio, the flow of tail gas and air gas mixture are controlled, can carry out atmosphere in the microwave radiation device and regulate;
4. use temperature 80～85 ℃ of hot washes, the pH value of washing back material is 6.5～7, and oven dry obtains activated carbon product.
The principle of patent of the present invention is as follows:
The tobacco rod waste floods with phosphoric acid solution after pulverizing, and make its temperature remain on 40～60 ℃, be actually falling under the dissolved condition and flood, material just becomes more loose after being fallen dissolving by phosphoric acid, phosphoric acid is with easier infiltration, will make tobacco rod pulverize the saturated phosphoric acid of material like this, material is expanded gradually until being loose condition (of surface).The dipping of heating makes tobacco rod pulverizing material just soften and expand following within a short period of time in the effect of phosphoric acid.For the fine raw material is provided in the follow-up reactivation process.
The tobacco rod waste has fundamentally changed the thermolysis course of tobacco rod waste behind the impregnation of phosphoric acid solution of heating.About 120 ℃, just finished drying process basically, at 185～400 ℃, form stable cohesion carbon structure and phosphoric acid-carbon structure; At 400～650 ℃, phosphoric acid slow oxidation etch selectively charcoal body forms micropore and mesopore, and this temperature province is the main humidity province of activation; After 650 ℃, the phosphoric acid-carbon structure with certain antioxidant capacity progressively resolves into gaseous product overflows, and the charcoal body loses the protection of phosphoric acid and oxidation is burnt and lost, and condenses carbon structure simultaneously and also can oxidation burns and lose, and causes the yield of gac to reduce.The temperature that patent therefore of the present invention adopts is 500～650 ℃, avoids phosphoric acid-carbon structure and cohesion carbon structure to burn and loses, and improves the yield of activated carbon product.
The present invention is in reactivation process, the tail gas and the air mixed of discharging are fed in the stove again, regulate activation phenomenon, quicken the etch of phosphoric acid on the one hand the charcoal body by the flow of adjustments of gas and the content of air, accelerate to form the speed of micropore and mesopore, thereby shorten the time of whole process flow; Can optionally impel phosphoric oxidation burning mistake in the material on the other hand, Free up Memory is to form mesopore.When heating dipping, by changing concentration of phosphoric acid and solid-to-liquid ratio, regulate the etch degree of phosphoric acid to the charcoal body, reach the purpose of control mesopore content.The phosphorus in the material can be effectively removed in hot wash, thereby makes micropore further expand as mesopore, improves the content of activated carbon product mesopore.
Patent of the present invention is compared with traditional technology, has the following advantages:
1. owing to adopt the dipping of heating, effectively improved the impregnation rate of phosphoric acid, effectively controlled mesopore volume when activating and lay the foundation for next step to the tobacco rod waste;
2. microwave radiation device can be realized atmosphere control, and microwave input power can be regulated, and makes material temperature stable.
3. the middle pore volume of activated carbon product accounts for 20～85% of total hole volume, the quality height, and high adsorption capacity, the Activated Carbon Production cost is low.
Four, description of drawings: Fig. 1 is a process flow sheet.
Five, embodiment
Embodiment one
The tobacco rod solid waste that to take from the Yuxi Prefecture, Yunnan is ground into diameter below 1.5mm, with concentration 20% phosphoric acid, the ratio of phosphoric acid and material be 2: 1 at 60 ℃ of dippings 8 hours down, after the power of packing into be radiation 2min in the microwave radiation device of 60kW, temperature reaches 575 ℃, feed activation tail gas and Air mixing gas, air is 1: 3 with the volume ratio of washing back tail gas, flow is 480mL/min, regulating activation phenomenon activates, soak time is 5min, regulates microwave irradiation power control material temperature in the reactivation process at 575 ± 5 ℃, and input speed is 190kg/h; Material takes out the hot wash with 80 ℃, and the pH value of washing back material is 6.8, and oven dry promptly gets activated carbon product again.The yield of gac is 35.47%, and middle pore volume accounts for 65.74% of total hole volume.(requirement of GB12496.1～22-1999) is analyzed activated carbon product, and main quality index-methylene blue adsorption value is 26mL/0.1g by national standard.And the methylene blue adsorption value of gac first grade is 9ml/0.1g in the national standard (GB/T13803.3-1999), the activated carbon product that present embodiment is produced, and its methylene blue adsorption value is 2.89 times of country-level standard.
Embodiment two
The tobacco rod solid waste that to take from the Qujing Prefecture, Yunnan is broken into diameter at the following particle of 2mm, with concentration 40% phosphoric acid, the ratio of phosphoric acid and material be 5: 1 at 50 ℃ of dippings 12 hours down, after the power of packing into be radiation 4min in the microwave radiation device of 35kW, temperature reaches 640 ℃, feed activation tail gas and Air mixing gas, air is 1: 6 with the volume ratio of washing back tail gas, flow is 780mL/min, regulating activation phenomenon activates, soak time is 8min, regulates microwave irradiation power control material temperature in the reactivation process at 640 ± 5 ℃, and input speed is 135kg/h; Material takes out the hot wash with 80 ℃, and the pH value of washing back material is 7, and drying promptly gets activated carbon product again.The yield of gac is 32.54%, and middle pore volume accounts for 83.26% of total hole volume.(requirement of GB12496.1～22-1999) is analyzed activated carbon product, and main quality index-methylene blue adsorption value is 32mL/0.1g by national standard.And the methylene blue adsorption value of gac first grade is 9ml/0.1g in the national standard (GB/T13803.3-1999), the activated carbon product that present embodiment is produced, and its methylene blue adsorption value is 3.56 times of country-level standard.
Embodiment three
The tobacco rod solid waste that to take from the Qujing Prefecture, Yunnan is broken into diameter at the following particle of 2mm, with concentration 30% phosphoric acid, the ratio of phosphoric acid and material be 4: 1 at 40 ℃ of dippings 12 hours down, after the power of packing into be radiation 3min in the microwave radiation device of 2kW, temperature reaches 635 ℃, feed activation tail gas and Air mixing gas, air is 1: 5 with the volume ratio of washing back tail gas, flow is 600mL/min, regulating activation phenomenon activates, soak time is 7min, regulates microwave irradiation power control material temperature in the reactivation process at 635 ± 5 ℃, and input speed is 4kg/h; Material takes out the hot wash with 80 ℃, and the pH value of washing back material is 7, and drying promptly gets activated carbon product again.The yield of gac is 35.21%, and middle pore volume accounts for 75.43% of total hole volume.(requirement of GB12496.1～22-1999) is analyzed activated carbon product, and main quality index-methylene blue adsorption value is 29mL/0.1g by national standard.And the methylene blue adsorption value of gac first grade is 9ml/0.1g in the national standard (GB/T13803.3-1999), the activated carbon product that present embodiment is produced, and its methylene blue adsorption value is 3.22 times of country-level standard.
Claims (1)
1, a kind of method of producing mesopore activated carbon is characterized in that: invention is finished according to the following steps: raw material tobacco rod solid waste is pulverized to below the 2mm; Volumetric concentration is 5～50% phosphate impregnations 4～18 hours, and phosphoric acid solution is 1.5: 1～9: 1 with the ratio of the quality of tobacco rod waste; The temperature of solution is at 40～60 ℃ during dipping; Go into when being heated to 500～650 ℃ in the microwave radiation device, the time is 4～10 minutes; Microwave power is 2～60kW, when temperature of charge reaches 650 ℃, feed self output tail gas and Air mixing gas and change activation phenomenon, the volume ratio of air and tail gas is 1: 2～1: 8, the flow of mixed gas is 100～800mL/min, and ventilation activation time was come out of the stove in 3～9 minutes.80～85 ℃ of hot washes, the pH value of washing back material is 6.5～7 with temperature, and oven dry obtains activated carbon product.
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| CNB2005100106721A CN1278930C (en) | 2005-02-28 | 2005-02-28 | Method for producing mesopore activated carbon |
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|---|---|---|---|
| CNB2005100106721A CN1278930C (en) | 2005-02-28 | 2005-02-28 | Method for producing mesopore activated carbon |
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| CN1669919A true CN1669919A (en) | 2005-09-21 |
| CN1278930C CN1278930C (en) | 2006-10-11 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396607C (en) * | 2006-03-22 | 2008-06-25 | 楚雄烟叶复烤有限责任公司 | Method and device for producing tobacco stalk active carbon |
| CN100582001C (en) * | 2008-03-11 | 2010-01-20 | 山东大学 | Technique for preparing active carbon by Cucurbitaceae plant vine |
| CN102191588A (en) * | 2011-03-18 | 2011-09-21 | 山东大学 | Method for making active carbon fibers of cotton stalk skins by using microwave method |
| CN102423690A (en) * | 2011-10-17 | 2012-04-25 | 山东大学 | Preparation method of mesoporous tomato stem active carbon |
| CN102616778A (en) * | 2012-04-06 | 2012-08-01 | 昆明理工大学 | Method for preparing mesoporous activated carbon by regenerating waste coal-based activated carbon through microwave heating |
| CN102757046A (en) * | 2012-06-27 | 2012-10-31 | 昆明理工大学 | Method for preparing mesoporous activated carbon from nutgall dregs |
| CN103303918A (en) * | 2013-06-28 | 2013-09-18 | 广西大学 | Method for preparing activated carbon by using water hyacinth |
| WO2014031368A1 (en) * | 2012-08-21 | 2014-02-27 | Corning Incorporated | Microwave energy-assisted, chemical activation of carbon |
| WO2014077714A1 (en) | 2012-11-16 | 2014-05-22 | Politechnika Poznańska | Production of activated carbon from tobacco leaves by simultaneous carbonization and self-activation and the activated carbon thus obtained |
| CN103864073A (en) * | 2014-02-27 | 2014-06-18 | 广西师范大学 | Preparation method for sugarcane leaf-sugarcane peel activated carbon |
| CN105883799A (en) * | 2016-04-25 | 2016-08-24 | 贵州安凯达实业股份有限公司 | Method for improving activity of activated carbon |
| CN106178922A (en) * | 2016-07-29 | 2016-12-07 | 中冶宝钢技术服务有限公司 | Slag micro powder and activated carbon from activated sludge composite desulfurizing agent and its preparation method and application |
| CN106423065A (en) * | 2016-11-21 | 2017-02-22 | 绍兴文理学院 | Post-treatment method for increasing specific surface area of bio-carbon effective pores |
| CN106732353A (en) * | 2016-11-21 | 2017-05-31 | 绍兴文理学院 | A kind of charcoal preparation method to antibiotic with high absorption capacity |
| CN111484012A (en) * | 2020-05-26 | 2020-08-04 | 王占军 | Method for producing decolored active carbon by using phosphoric acid method |
-
2005
- 2005-02-28 CN CNB2005100106721A patent/CN1278930C/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396607C (en) * | 2006-03-22 | 2008-06-25 | 楚雄烟叶复烤有限责任公司 | Method and device for producing tobacco stalk active carbon |
| CN100582001C (en) * | 2008-03-11 | 2010-01-20 | 山东大学 | Technique for preparing active carbon by Cucurbitaceae plant vine |
| CN102191588A (en) * | 2011-03-18 | 2011-09-21 | 山东大学 | Method for making active carbon fibers of cotton stalk skins by using microwave method |
| CN102191588B (en) * | 2011-03-18 | 2012-11-21 | 山东大学 | Method for making active carbon fibers of cotton stalk skins by using microwave method |
| CN102423690A (en) * | 2011-10-17 | 2012-04-25 | 山东大学 | Preparation method of mesoporous tomato stem active carbon |
| CN102423690B (en) * | 2011-10-17 | 2013-06-12 | 山东大学 | Preparation method of mesoporous tomato stem active carbon |
| CN102616778A (en) * | 2012-04-06 | 2012-08-01 | 昆明理工大学 | Method for preparing mesoporous activated carbon by regenerating waste coal-based activated carbon through microwave heating |
| CN102757046A (en) * | 2012-06-27 | 2012-10-31 | 昆明理工大学 | Method for preparing mesoporous activated carbon from nutgall dregs |
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