CN1108212A - Method for prodn. of activated carbon - Google Patents
Method for prodn. of activated carbon Download PDFInfo
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- CN1108212A CN1108212A CN 94101744 CN94101744A CN1108212A CN 1108212 A CN1108212 A CN 1108212A CN 94101744 CN94101744 CN 94101744 CN 94101744 A CN94101744 A CN 94101744A CN 1108212 A CN1108212 A CN 1108212A
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- activated carbon
- zinc
- production method
- wood chip
- carbon production
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Abstract
The method consists of selecting wood bits containing less grease and drying it, preparing the solution of zinc chloride, the Beaume scale is 55-65 deg. Be/60 deg.C, Zn:wooddust=(3-4.5):1 activating under300-500 deg.C, recovering the Zn slution, rinsing and wet milling rinsing. Said product features low cost, good adsorption property.
Description
The present invention relates to a kind of improved Activated Carbon Production method, particularly adopt zinc chloride activation method to produce the high adsorption capacity process of active carbon.
Existing zinc chloride activation method is produced the technology of gac can divide nine operations: 1, the screening of wood chip and drying.2, the preparation of activator liquor zinci chloridi: it is 50～57 ° of Be '/60 ℃ that craboraffin activator prescription requires the degree Beaume of liquor zinci chloridi, pH value 3.0～3.5; It is 45～47 ° of Be '/60 ℃ that industrial activited carbon activator prescription requires the degree Beaume of liquor zinci chloridi, pH value 1.0～1.5.3, mediate: consider to be worth doing than the ratio of over dry wood chip weight (the solid zinc chloride with) by zinc and be: craboraffin 1.9～2.8: 1, industrial activited carbon 1.2～1.4: 1, with wood chip and liquor zinci chloridi uniform mixing.4, charcoal, activation: controlling the carbonized material temperature usually is 300～400 ℃, and the activated material temperature is 500～600 ℃.5, reclaim the activator zinc chloride.6, rinsing: comprise pickling and two steps of washing.7, centrifuge dehydration.8, drying.9, grind packing.
Its main drawback is that the consumption of activator zinc chloride is big, the production cost height, and the product adsorptive capacity is lower.
Task of the present invention is that a kind of improved Activated Carbon Production method will be provided, and by improving production technique and condition, produces a kind of adsorptive capacity height, wet gac that cost is low.
Activated Carbon Production method of the present invention comprises the screening and the drying of (a) wood chip; (b) preparation of activator liquor zinci chloridi; (c) mediate in zinc bits ratio; (d) charcoal, activation; (e) reclaim zinc liquid; (f) rinsing; It is characterized in that:
1), in (a) wood chip should to select fat content few wooden (as China fir) for use be raw material.
2), the degree Beaume of the activator liquor zinci chloridi in (b) is 55～65 ° Be/60 ℃.
3) zinc bits of, mediating in (c) are than being 3～4.5:1.
4), (d) charcoal activation temperature is 350～500 ℃.
5), wet-milling is pulverized after the rinsing.
The concrete steps of production technique of the present invention are described as follows:
1, the screening of wood chip and drying: wood pellet is 6～40 orders, removes slab, iron filings, silt and foreign material etc., by drying, makes water ratio reduce to 10～40%.
2, the preparation of liquor zinci chloridi: it is 55～65 ° of Be '/60 ℃ that the prescription of present method requires the degree Beaume of liquor zinci chloridi, and pH value is 1～3;
3, mediate: the zinc bits than being 3～4.5:1, stir wood chip and liquor zinci chloridi by the zinc bits repeatedly than being a key factor, and it is mixed;
4, charcoal, activation: charcoal, activation are critical process producing gac, and control material activating temperature is 350～500 ℃;
5, reclaim zinc liquid: in activated material, contain zinc chloride and zinc compound, liquor zinci chloridi and a spot of technical hydrochloric acid dissolving zinc chloride of adding and zinc oxide with different concns, reclaimer operation by similar extraction, charcoal is separated with zinc compound, the zinc chloride that reclaims is used to prepare the activator liquor zinci chloridi through after the special processing;
6, rinsing: its objective is and remove various impurity that remove iron compound with hydrochloric acid earlier, reusable heat water repeatedly washs removes chlorion;
7, grind, dewater, pack: adopt wet-milling to pulverize, the centrifuge dewatering product is supplied with the user with wet charcoal.
Embodiment 1:
＜1〉choose the few wood material of fat content, through pulverizing, screening, obtaining particle is 6～40 purpose wood chips, drying;
＜2〉preparation activator liquor zinci chloridi degree Beaume is 60 ° of Be '/60 ℃, and pH value is 1;
＜3〉mediate for 3.5:1 by zinc bits ratio;
＜4〉activation temperature is 450 ℃, 40 minutes time;
＜5〉reclaim zinc liquid;
＜6〉pickling, washing;
＜7〉wet-milling pulverizing, centrifuge dehydration, packing.
Embodiment 2:
＜1〉choosing China fir is raw material, and through pulverizing, screening, obtaining particle is 6～40 purpose wood chips, drying;
＜2〉activator liquor zinci chloridi degree Beaume is 58 ° of Be '/60 ℃, and pH value is 2;
＜3〉mediate operation zinc bits than being 4: 1;
＜4〉activation temperature is 400 ℃, 30 minutes time;
＜5〉reclaim zinc liquid;
＜6〉pickling, washing;
＜7〉wet-milling pulverizing, centrifuge dehydration, packing.
Technology of the present invention simply, does not need drying process. Adopt lower activation temperature, the loss amount of zinc chloride is reduced, reduced production cost. Though this product is wet active carbon, because internal void very flourishing (outward appearance is still loose) improves 50～100%(by over dry than common charcoal absorption amount), and the absorption property wide spectrum is general, good in economic efficiency.
Claims (5)
1, a kind of Activated Carbon Production method comprises the screening and the drying of (a) wood chip; (b) preparation of activator liquor zinci chloridi; (c) mediate in zinc bits ratio; (d) charcoal, activation; (e) reclaim zinc liquid; (f) rinsing.It is characterized in that:
1), wood chip should select for use few wooden of fat content to be raw material in (a),
2), the degree Beaume of activator liquor zinci chloridi is 55～65 ° of Be '/60 ℃ in (b),
3), zinc bits of mediating in (C) are than being 3～4.5: 1,
4), activation temperature is 350～500 ℃ in (d),
5), wet-milling is pulverized after the rinsing.
2, Activated Carbon Production method according to claim 1 is characterized in that wood chip adopts the China fir wood chip.
3, Activated Carbon Production method according to claim 1 and 2, the zinc that it is characterized in that mediating bits are than being 3.5～4.2:1.
4, Activated Carbon Production method according to claim 1 and 2, it is characterized in that activating humidity is 380～450 ℃.
5, Activated Carbon Production method according to claim 3 is characterized in that activation temperature is 380～450 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101744 CN1036130C (en) | 1994-03-09 | 1994-03-09 | Method for prodn. of activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101744 CN1036130C (en) | 1994-03-09 | 1994-03-09 | Method for prodn. of activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1108212A true CN1108212A (en) | 1995-09-13 |
| CN1036130C CN1036130C (en) | 1997-10-15 |
Family
ID=5030340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94101744 Expired - Fee Related CN1036130C (en) | 1994-03-09 | 1994-03-09 | Method for prodn. of activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036130C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427202C (en) * | 2006-10-30 | 2008-10-22 | 山东大学 | Charring and poreforming method for preparation of active carbon of red willow |
| CN101289184B (en) * | 2008-06-04 | 2010-09-22 | 福建元力活性炭股份有限公司 | Process of producing active carbon by integration method of physical method and chemical method |
| CN101885977A (en) * | 2010-07-06 | 2010-11-17 | 贵州省锦屏县华绿炭素有限公司 | Method for extracting cedar oil and co-producing active carbon from China fir sawdust |
| CN101941697A (en) * | 2010-09-21 | 2011-01-12 | 华南师范大学 | Method for preparing active carbon for use in lead-acid battery |
| CN102145889A (en) * | 2011-04-15 | 2011-08-10 | 安徽冬阳生物能源有限公司 | Technology for preparing active carbon from biomass pyrolysis waste |
| CN102275911A (en) * | 2011-06-03 | 2011-12-14 | 中国林业科学研究院林产化学工业研究所 | Microporous active carbon and preparation method by chemical agent aperture regulation and control |
| CN104692376A (en) * | 2013-12-07 | 2015-06-10 | 刘波 | Method for producing activated carbon by adopting salinization method |
| CN110294475A (en) * | 2019-06-06 | 2019-10-01 | 中国林业科学研究院林产化学工业研究所 | Zinc chloride process active carbon and preparation method thereof |
| CN110683542A (en) * | 2019-11-28 | 2020-01-14 | 湖南省格林森炭业股份有限公司 | Preparation method of activated carbon |
-
1994
- 1994-03-09 CN CN 94101744 patent/CN1036130C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427202C (en) * | 2006-10-30 | 2008-10-22 | 山东大学 | Charring and poreforming method for preparation of active carbon of red willow |
| CN101289184B (en) * | 2008-06-04 | 2010-09-22 | 福建元力活性炭股份有限公司 | Process of producing active carbon by integration method of physical method and chemical method |
| CN101885977A (en) * | 2010-07-06 | 2010-11-17 | 贵州省锦屏县华绿炭素有限公司 | Method for extracting cedar oil and co-producing active carbon from China fir sawdust |
| CN101941697A (en) * | 2010-09-21 | 2011-01-12 | 华南师范大学 | Method for preparing active carbon for use in lead-acid battery |
| CN102145889A (en) * | 2011-04-15 | 2011-08-10 | 安徽冬阳生物能源有限公司 | Technology for preparing active carbon from biomass pyrolysis waste |
| CN102145889B (en) * | 2011-04-15 | 2013-06-05 | 安徽冬阳生物能源有限公司 | Technology for preparing active carbon from biomass pyrolysis waste |
| CN102275911A (en) * | 2011-06-03 | 2011-12-14 | 中国林业科学研究院林产化学工业研究所 | Microporous active carbon and preparation method by chemical agent aperture regulation and control |
| CN104692376A (en) * | 2013-12-07 | 2015-06-10 | 刘波 | Method for producing activated carbon by adopting salinization method |
| CN110294475A (en) * | 2019-06-06 | 2019-10-01 | 中国林业科学研究院林产化学工业研究所 | Zinc chloride process active carbon and preparation method thereof |
| CN110683542A (en) * | 2019-11-28 | 2020-01-14 | 湖南省格林森炭业股份有限公司 | Preparation method of activated carbon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036130C (en) | 1997-10-15 |
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