CN101209839A - Preparation method of high performance active carbon - Google Patents
Preparation method of high performance active carbon Download PDFInfo
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- CN101209839A CN101209839A CNA2007101856512A CN200710185651A CN101209839A CN 101209839 A CN101209839 A CN 101209839A CN A2007101856512 A CNA2007101856512 A CN A2007101856512A CN 200710185651 A CN200710185651 A CN 200710185651A CN 101209839 A CN101209839 A CN 101209839A
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Abstract
A preparation method of a high performance activated carbon is provided. Raw material coal is ground to 50-100 meshes and evenly mixed with KO according to weight ratio of 1:1-6. The mixture is placed in a reactor which is pumped in N2 for protection and heated according to a speed of 2-10 DEG C/min from room temperature to the temperature of 500 to 650 DEG C; the temperature is maintained for 0.5-2 hours; then the mixture is heated according to a speed of 5-10 DEG C to the temperature of 800 to 950 DEG C which is maintained for 0.5-2 hours and cooled to room temperature; an activated material is obtained, which is washed by water to a pH value of 7-7.5, then dipped with hydrochloric acid for 2-3 times and 2-3 hours each time, then washed by distilled water to be neutral and dried; the super activated carbon is obtained. The activated carbon prepared by the invention has the advantages that the ash content is small; the specific area is large; the method adopted is simple and accurate with small pollution degree, low cost and simple technical process, which is beneficial to successful implementation of industrialization.
Description
Technical field
The invention belongs to a kind of preparation method of high performance active carbon.
Background technology
Along with development and the raising of people's living standard and the severization of environmental protection standard of society, Application of Brand Active Carbon will expand to numerous fields, and the application of high performance active carbon also will present a development fast.High performance gac requires its over-all properties to want high, all requires to reach a rational numerical such as specific surface area, pore structure, ash etc.At present, the raw material that can prepare high performance active carbon mainly is a refinery coke, resene, the low ash of coconut husk class contains carbon precursor, as patent 200410012345,02129599,00104267 what adopt is refinery coke, what patent 200610038065 adopted is resol, patent 200610139415,200510010965 employings be coconut husk, the above-mentioned raw materials common characteristic is that contained ash is few, or do not contain ash substantially, the ash of final gained gac also seldom, but the cost of above-mentioned raw materials is still higher in large-scale industrialization is produced, Lian Jia coal becomes a kind of selection for this reason, and its aboundresources.Yet the ash in the coal is very high, generally about 20%, even if so-called low culm or ultrapure coal, its ash is also more than 2%, ash far above in the raw materials such as refinery coke, resene, coconut husk class makes that the ash of final prepared gac is higher, is unfavorable for its widespread use.
Disclose a kind of employing soda acid chemical reagent in the patent 91109799.6 coal mass active carbon has been handled, removed wherein soluble harmful substances, made ash content reduce to 4-8%, thereby obtain the method for top-grade active carbon from original 10-20%.Among the patent 200610123444.X be with ature of coal carbonized material and KOH according to 1: 300-500 ℃ of pre-treatment 0.5-2h after the mixed of 1-7, again at 600-900 ℃ of activation 1-5h, the activated material of cooling back gained is earlier with the distillation washing, use pickling and alkali cleaning 2-7 time more repeatedly, being washed till the pH value with distilled water afterwards is 6-7, makes coal mass active carbon.
Above-mentioned patent all is that the active carbon from coal after the activation is adopted the bronsted lowry acids and bases bronsted lowry repeated treatments, can make high performance gac, so not only cause pollution to a certain degree, make that also production cost significantly improves simultaneously, production technique is also very complicated, is unfavorable for the smooth implementation of industrialization.
Summary of the invention
The purpose of this invention is to provide that a kind of production technique is simple, cost is low, the preparation method of a kind of high performance active carbon of large-scale industrial production.
The present invention realizes according to the following steps:
(1) feed coal is ground into the 50-150 order, with KOH by weight 1: 1-6 mixes;
(2) this mixture is placed in the reactor, feeds N
2Protection is raised to 500-650 ℃, constant temperature 0.5-2h from room temperature according to the speed of 2-10 ℃/min; Speed with 5-10 ℃/min is raised to 800-950 ℃ afterwards, and constant temperature 0.5-2h cools to room temperature naturally, gets activated material;
(3) washing activated material with water pH value earlier is 7-7.5, uses salt acid dipping 2-3 time instead, and each 2-3h is washed till neutrality with distilled water afterwards, and drying gets super-activated carbon.
Aforesaid feed coal is hard coal, weakly caking coal, coking coal, meager coal etc.
Advantage of the present invention:
(1) difference of the present invention and other patent maximum is that mixture to coal dust and KOH is at 500-650 ℃ of following constant temperature 0.5-2h, because behind this temperature section internal reaction, use the salt acid elution again, can farthest remove in the coal or the gained activated material in ash, and general patent is the dehydration reaction of carrying out 1-2h under 300-500 ℃;
(2) another characteristics are only to adopt hydrochloric acid that the gained activated material is carried out 2-3 time dipping can remove ash in the gac, and other patent is that activated material had both been adopted acid elution, again with alkaline purification and also need just can remove ash under boiled condition;
(3) the method applied in the present invention is simple and easy to do, and pollution level is little, and production cost is low, and technology is simple, is beneficial to the smooth implementation of industrialization.
Embodiment
Embodiment 1: hard coal is ground into the 50-80 order, is placed in the reactor after mixing by weight 1: 6 with KOH, feed N
2Protection is raised to 500 ℃, constant temperature 2h from room temperature according to the speed of 2 ℃/min; Speed with 5 ℃/min is raised to 900 ℃ afterwards, and constant temperature 0.5h cools to room temperature naturally, gets activated material.Earlier with after the extremely nearly neutrality of tap water washing, use activated material instead the salt acid dipping 2 times, each 3h is washed till neutrality with distilled water afterwards, and is dry that the ash content of coal is that 1.8% specific surface area is 3345m
2The super-activated carbon of/g.
Comparative Examples 1: hard coal is ground into the 50-80 order, is placed in the reactor after mixing by weight 1: 6 with KOH, feed N
2Protection is raised to 300 ℃, constant temperature 2h from room temperature according to the speed of 2 ℃/min; All conditions is identical with embodiment 1 afterwards.The ash content of coal of gained super-activated carbon is 6.9%, and specific surface area is 2980m
2/ g.
Embodiment 2: weakly caking coal is ground into the 80-120 order, is placed in the reactor after mixing at 1: 1 with KOH, feed the N2 protection, be raised to 650 ℃, constant temperature 1h from room temperature according to the speed of 5 ℃/min; Speed with 8 ℃/min is raised to 950 ℃ afterwards, and constant temperature 1h cools to room temperature naturally, gets activated material.Earlier with after the extremely nearly neutrality of tap water washing, use activated material instead the salt acid dipping 3 times, each 2h is washed till neutrality with distilled water afterwards, and is dry that the ash content of coal is that 4.2% specific surface area is 2438m
2The super-activated carbon of/g.
Comparative Examples 2: weakly caking coal is ground into the 80-120 order, after mixing at 1: 1, is placed in the reactor, feed the N2 protection, be raised to 500 ℃, constant temperature 1h according to the speed of 5 ℃/min from room temperature with KOH; All conditions is similar to Example 2 afterwards.The ash content of coal of gained super-activated carbon is 9.2%, and specific surface area is 2010m
2/ g.
Embodiment 3: coking coal is ground into the 100-150 order, is placed in the reactor after mixing at 1: 4 with KOH, feed the N2 protection, be raised to 600 ℃, constant temperature 0.5h from room temperature according to the speed of 10 ℃/min; Speed with 8 ℃/min is raised to 800 ℃ afterwards, and constant temperature 2h cools to room temperature naturally, gets activated material.Earlier with after the extremely nearly neutrality of tap water washing, use activated material instead the salt acid dipping 2 times, each 2h is washed till neutrality with distilled water afterwards, and is dry that the ash content of coal is that 3.5% specific surface area is 2985m
2The super-activated carbon of/g.
Comparative Examples 3: coking coal is ground into the 100-150 order, after mixing at 1: 4, is placed in the reactor, feed the N2 protection, be raised to 400 ℃, constant temperature 0.5h according to the speed of 10 ℃/min from room temperature with KOH; All conditions is similar to Example 3 afterwards.The ash content of coal of gained super-activated carbon is 5.4%, and specific surface area is 2339m
2/ g.
Embodiment 4: meager coal is ground into the 70-100 order, is placed in the reactor after mixing at 1: 5 with KOH, feed the N2 protection, be raised to 600 ℃, constant temperature 2h from room temperature according to the speed of 5 ℃/min; Speed with 8 ℃/min is raised to 950 ℃ afterwards, and constant temperature 1h cools to room temperature naturally, gets activated material.Earlier with after the extremely nearly neutrality of tap water washing, use activated material instead the salt acid dipping 3 times, each 3h is washed till neutrality with distilled water afterwards, and is dry that the ash content of coal is that 1.5% specific surface area is 3460m
2The super-activated carbon of/g.
Comparative Examples 4: meager coal is ground into the 70-100 order, after mixing at 1: 5, is placed in the reactor, feed the N2 protection, be raised to 400 ℃, constant temperature 2h according to the speed of 5 ℃/min from room temperature with KOH; All conditions is similar to Example 4 afterwards.The ash content of coal of gained super-activated carbon is 6.1%, and specific surface area is 3020m
2/ g.
Claims (2)
1. the preparation method of a high performance active carbon is characterized in that comprising the steps:
The present invention realizes according to the following steps:
(1) feed coal is ground into the 50-150 order, with KOH by weight 1: 1-6 mixes;
(2) this mixture is placed in the reactor, feeds N
2Protection is raised to 500-650 ℃, constant temperature 0.5-2h from room temperature according to the speed of 2-10 ℃/min; Speed with 5-10 ℃/min is raised to 800-950 ℃ afterwards, and constant temperature 0.5-2h cools to room temperature naturally, gets activated material;
(3) washing activated material with water pH value earlier is 7-7.5, uses salt acid dipping 2-3 time instead, and each 2-3h is washed till neutrality with distilled water afterwards, and drying gets super-activated carbon.
2. the preparation method of a kind of high performance active carbon as claimed in claim 1 is characterized in that described feed coal is hard coal, weakly caking coal, coking coal or meager coal.
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| CNA2007101856512A CN101209839A (en) | 2007-12-24 | 2007-12-24 | Preparation method of high performance active carbon |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837281A (en) * | 2010-06-04 | 2010-09-22 | 厦门大学 | Method for preparing formaldehyde adsorbent having composite adsorption function |
| CN101439857B (en) * | 2008-12-11 | 2011-03-02 | 武汉科技大学 | Mesoporous activated carbon and preparation process thereof |
| CN102153162A (en) * | 2011-04-29 | 2011-08-17 | 南京大学 | Application of KOH activated active carbon to removing antibiotics in water body through adsorption |
| CN102432005A (en) * | 2011-09-22 | 2012-05-02 | 煤炭科学研究总院 | Activated carbon capable of deeply purifying drinking water and preparation method for activated carbon |
| CN102583366A (en) * | 2012-01-19 | 2012-07-18 | 中国科学院山西煤炭化学研究所 | Method for washing active carbon with low water consumption |
| CN102602930A (en) * | 2012-03-22 | 2012-07-25 | 西安科技大学 | Method for preparing activated carbon by aid of compound activators |
| CN102923810A (en) * | 2012-12-03 | 2013-02-13 | 南京大学 | Method for removing sulfamethoxazole from water through adsorption of KOH-activated coal-based active carbon |
| CN102942181A (en) * | 2012-12-04 | 2013-02-27 | 南京大学 | Preparation method of formed carbon-based material |
| CN103887033A (en) * | 2014-03-13 | 2014-06-25 | 常州中科海纳碳素科技有限公司 | Method for preparing activated carbon capable of absorbing electromagnetic waves |
| CN104291333A (en) * | 2014-09-10 | 2015-01-21 | 重庆大学 | Method for preparing stone coal based mesoporous activated carbon with high specific surface area |
| CN105969449A (en) * | 2016-06-30 | 2016-09-28 | 云南澜沧铅矿有限公司 | Refining production method for reducing ash in lignite |
| CN106083052A (en) * | 2016-08-08 | 2016-11-09 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
| CN106283117A (en) * | 2016-08-08 | 2017-01-04 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
| CN106629719A (en) * | 2016-09-21 | 2017-05-10 | 广东美的制冷设备有限公司 | Preparation technology for activated carbon |
| CN107128917A (en) * | 2017-04-24 | 2017-09-05 | 句容市百诚活性炭有限公司 | A kind of preparation method of active carbon with high specific surface area |
| CN108579804A (en) * | 2018-04-02 | 2018-09-28 | 山东大学 | A kind of coal based solid acid catalyst and preparation method thereof |
| CN108821284A (en) * | 2018-09-08 | 2018-11-16 | 佛山市森昂生物科技有限公司 | A kind of preparation method of sand sagebrush (Artemisia filifolia) charcoal |
| CN109455717A (en) * | 2018-10-23 | 2019-03-12 | 中国科学院山西煤炭化学研究所 | A kind of method of free state chloride ion in removal super capacitor active carbon |
-
2007
- 2007-12-24 CN CNA2007101856512A patent/CN101209839A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439857B (en) * | 2008-12-11 | 2011-03-02 | 武汉科技大学 | Mesoporous activated carbon and preparation process thereof |
| CN101837281B (en) * | 2010-06-04 | 2012-06-20 | 厦门大学 | Method for preparing formaldehyde adsorbent having composite adsorption function |
| CN101837281A (en) * | 2010-06-04 | 2010-09-22 | 厦门大学 | Method for preparing formaldehyde adsorbent having composite adsorption function |
| CN102153162A (en) * | 2011-04-29 | 2011-08-17 | 南京大学 | Application of KOH activated active carbon to removing antibiotics in water body through adsorption |
| CN102153162B (en) * | 2011-04-29 | 2013-10-09 | 南京大学 | Application of KOH activated active carbon in removing antibiotics in water body through adsorption |
| CN102432005A (en) * | 2011-09-22 | 2012-05-02 | 煤炭科学研究总院 | Activated carbon capable of deeply purifying drinking water and preparation method for activated carbon |
| CN102583366A (en) * | 2012-01-19 | 2012-07-18 | 中国科学院山西煤炭化学研究所 | Method for washing active carbon with low water consumption |
| CN102602930A (en) * | 2012-03-22 | 2012-07-25 | 西安科技大学 | Method for preparing activated carbon by aid of compound activators |
| CN102923810A (en) * | 2012-12-03 | 2013-02-13 | 南京大学 | Method for removing sulfamethoxazole from water through adsorption of KOH-activated coal-based active carbon |
| CN102942181B (en) * | 2012-12-04 | 2014-07-02 | 南京大学 | Preparation method of formed carbon-based material |
| CN102942181A (en) * | 2012-12-04 | 2013-02-27 | 南京大学 | Preparation method of formed carbon-based material |
| CN103887033A (en) * | 2014-03-13 | 2014-06-25 | 常州中科海纳碳素科技有限公司 | Method for preparing activated carbon capable of absorbing electromagnetic waves |
| CN104291333A (en) * | 2014-09-10 | 2015-01-21 | 重庆大学 | Method for preparing stone coal based mesoporous activated carbon with high specific surface area |
| CN105969449A (en) * | 2016-06-30 | 2016-09-28 | 云南澜沧铅矿有限公司 | Refining production method for reducing ash in lignite |
| CN106083052A (en) * | 2016-08-08 | 2016-11-09 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
| CN106283117A (en) * | 2016-08-08 | 2017-01-04 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
| CN106283117B (en) * | 2016-08-08 | 2018-05-04 | 广西强强碳素股份有限公司 | A kind of preparation method of anode carbon block for electrolytic aluminum |
| CN106629719A (en) * | 2016-09-21 | 2017-05-10 | 广东美的制冷设备有限公司 | Preparation technology for activated carbon |
| CN107128917A (en) * | 2017-04-24 | 2017-09-05 | 句容市百诚活性炭有限公司 | A kind of preparation method of active carbon with high specific surface area |
| CN108579804A (en) * | 2018-04-02 | 2018-09-28 | 山东大学 | A kind of coal based solid acid catalyst and preparation method thereof |
| CN108821284A (en) * | 2018-09-08 | 2018-11-16 | 佛山市森昂生物科技有限公司 | A kind of preparation method of sand sagebrush (Artemisia filifolia) charcoal |
| CN109455717A (en) * | 2018-10-23 | 2019-03-12 | 中国科学院山西煤炭化学研究所 | A kind of method of free state chloride ion in removal super capacitor active carbon |
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