CN101074096A - Production of sand-grass straw activated carbon - Google Patents
Production of sand-grass straw activated carbon Download PDFInfo
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- CN101074096A CN101074096A CN 200710015048 CN200710015048A CN101074096A CN 101074096 A CN101074096 A CN 101074096A CN 200710015048 CN200710015048 CN 200710015048 CN 200710015048 A CN200710015048 A CN 200710015048A CN 101074096 A CN101074096 A CN 101074096A
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Abstract
Production of sabadilla straw active carbon is carried out by washing sabadilla straw, crushing, carbonizing and activating. It has larger pore volume, excellent active carbon specific area and adsorptive ability.
Description
Technical field
The present invention relates to preparation method of active carbon in a kind of advanced treatment that is applied to waste water and the purification process, specifically the straw with the waterplant sand-grass prepares needed gac in the water technology.
Background technology
Along with science and technology development, the use of gac is more and more.Gac is a kind of porous carbonaceous material, and its flourishing gap structure makes it have very big surface-area, and the powerful absorption field of force has extremely strong adsorptive power around the hole, can be adsorbed with the ion in poisonous gas molecule and the solution.The raw material of gac is made in conducts such as the making Chang Yimu of tradition gac, coal, waste or used plastics, the cost of material height, and preparation cost is big, when obtaining raw material, has not only wasted natural resources, also environment is caused severe contamination.Sand-grass has another name called cyperus alternifolius, paper sand-grass, is distributed widely in river, lakelands.Because it is grown in wetland, makes it have corresponding biology and construct---stalk inside is spongy, and many vertical ventilating pits are arranged.Its natural biological is learned the requirement that structure is fit to gac contrast table area, pore volume and adsorptive power very much.Therefore be the feedstock production gac with aquatic sand-grass, not only can solve the environmental pollution problem, and can make full use of this resource that produce broad-spectrum gac, making it turns waste into wealth, and produces better economic, environment and social benefit.
Summary of the invention
Deficiency at Preparation of Activated Carbon scarcity of raw material in the prior art and easy contaminate environment, the invention provides a kind of preparation method of sand-grass straw-stem active charcoal, this method environmental pollution is little, can make full use of the sand-grass resource, and manufacture craft is simple, economy, environmental protection.
A kind of preparation method of sand-grass straw-stem active charcoal, concrete steps are as follows:
(1) the sand-grass stalk is cleaned, dried or dry;
(2) the sand-grass crushed stalk after will drying or dry, sand-grass stalk bits;
(3) sand-grass stalk bits being put into charring furnace, is under 350 ℃～450 ℃ the carbonization temperature in temperature, charing 1～1.5 hour, sand-grass straw charring bits;
(4) sand-grass straw charring bits are put into the fixed bed activation furnace, activated media is a water vapor, is warming up to 550～650 ℃ activation temperature, constant temperature activation 60～80 minutes with the heat-up rate of 12～18 ℃/min.
Preferably, the temperature of drying in the step (1) is 15 ℃～35 ℃.
Preferably, the bake out temperature in the step (1) is 90 ℃～120 ℃.
Preferably, the best powder particle diameter in the step (2) is 40～60 orders.
Excellent results of the present invention is as follows:
1. sand-grass is a wetland plant, and the special gac specific surface of producing that makes of biology structure of sand-grass is big, and pore volume is big, high adsorption capacity.
2. sand-grass grows in the wetland environment, its straw porous, and it is simple to produce activated carbon process, easy handling.
3. the sand-grass strong stress resistance is widely distributed, is the raw material production gac with the sand-grass, and starting material extensively are easy to get, and production cost is low.
4. the sand-grass carbon content rate is high and green non-poisonous, in the process of preparation gac, can not cause in the environmental pollution preparation process pollution-freely, does not destroy environment.
Embodiment
The invention will be further described below in conjunction with embodiment, but be not limited thereto.
Embodiment 1: the preparation method of sand-grass straw-stem active charcoal, and concrete steps are as follows:
Water with the sand-grass stalk clean, removal of impurities and 120 ℃ of oven dry down, the sand-grass straw powder after will dry by pulverizer again is broken into 60 purpose sand-grass stalks and considers to be worth doing.Sand-grass stalk bits are put into charring furnace, and under 450 ℃ carbonization temperature, charing 1 hour gets sand-grass straw charring bits.Sand-grass straw charring bits are put into the fixed bed activation furnace, are activated media at water vapour, under the heat-up rate of 18 ℃/min, are warming up to 650 ℃ and activate, and soak time is 60 minutes.
Embodiment 2: the preparation method of sand-grass straw-stem active charcoal, and concrete steps are as follows:
Water with the sand-grass stalk clean, removal of impurities and under 15 ℃, drying, the sand-grass straw powder after will dry by pulverizer again is broken into 80 purpose sand-grass stalks and considers to be worth doing.Sand-grass stalk bits are put into charring furnace, and under 400 ℃ carbonization temperature, charing 1.2 hours gets sand-grass straw charring bits.Sand-grass straw charring bits are put into the fixed bed activation furnace, are activated media at water vapour, under the heat-up rate of 12 ℃/min, are warming up to 550 ℃ and activate, and soak time is 80 minutes.
Embodiment 3: the preparation method of sand-grass straw-stem active charcoal, and concrete steps are as follows:
Water with the sand-grass stalk clean, removal of impurities and 90 ℃ of oven dry down, the sand-grass straw powder after will dry by pulverizer again is broken into 70 purpose sand-grass stalks and considers to be worth doing.Sand-grass stalk bits are put into charring furnace, and under 350 ℃ carbonization temperature, charing 1.5 hours gets sand-grass straw charring bits.Sand-grass straw charring bits are put into the fixed bed activation furnace, are activated media at water vapour, under the heat-up rate of 15 ℃/min, are warming up to 620 ℃ and activate, and soak time is 72 minutes.
Embodiment 4: the preparation method of sand-grass straw-stem active charcoal, and concrete steps are as follows:
Water with the sand-grass stalk clean, removal of impurities and under 35 ℃, drying, the sand-grass straw powder after will dry by pulverizer again is broken into 65 purpose sand-grass stalks and considers to be worth doing.Sand-grass stalk bits are put into charring furnace, and under 420 ℃ carbonization temperature, charing 1.3 hours gets sand-grass straw charring bits.Sand-grass straw charring bits are put into the fixed bed activation furnace, are activated media at water vapour, under the heat-up rate of 16 ℃/min, are warming up to 580 ℃ and activate, and soak time is 68 minutes.
Claims (4)
1, a kind of preparation method of sand-grass straw-stem active charcoal is characterized in that, step is as follows:
(1) the sand-grass stalk is cleaned, dried or dry;
(2) the sand-grass crushed stalk after will drying or dry, sand-grass stalk bits;
(3) sand-grass stalk bits being put into charring furnace, is under 350 ℃～450 ℃ the carbonization temperature in temperature, charing 1～1.5 hour, sand-grass straw charring bits;
(4) sand-grass straw charring bits are put into the fixed bed activation furnace, activated media is a water vapor, is warming up to 550～650 ℃ activation temperature, constant temperature activation 60～80 minutes with the heat-up rate of 12～18 ℃/min.
2, sand-grass straw preparation method of active carbon as claimed in claim 1 is characterized in that, the temperature of drying in the step (1) is 15 ℃～35 ℃.
3, sand-grass straw preparation method of active carbon as claimed in claim 1 is characterized in that, the bake out temperature in the step (1) is 90 ℃～120 ℃.
4, sand-grass straw preparation method of active carbon as claimed in claim 1 is characterized in that, the best powder particle diameter in the step (2) is 40～60 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015048 CN101074096A (en) | 2007-06-22 | 2007-06-22 | Production of sand-grass straw activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015048 CN101074096A (en) | 2007-06-22 | 2007-06-22 | Production of sand-grass straw activated carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101074096A true CN101074096A (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710015048 Pending CN101074096A (en) | 2007-06-22 | 2007-06-22 | Production of sand-grass straw activated carbon |
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| CN (1) | CN101074096A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817524A (en) * | 2010-05-05 | 2010-09-01 | 卞奎友 | Process for producing activated carbon by physical activation method |
| CN101830460A (en) * | 2010-05-26 | 2010-09-15 | 中国科学技术大学苏州研究院 | Active carbon particles and preparation method thereof |
| CN101838043A (en) * | 2010-03-12 | 2010-09-22 | 重庆大学 | Biological carbonaceous filler and preparation method thereof |
| CN103274400A (en) * | 2013-05-07 | 2013-09-04 | 西北农林科技大学 | Method for producing active carbon from salix mongolica branches through pyrolysis |
-
2007
- 2007-06-22 CN CN 200710015048 patent/CN101074096A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838043A (en) * | 2010-03-12 | 2010-09-22 | 重庆大学 | Biological carbonaceous filler and preparation method thereof |
| CN101838043B (en) * | 2010-03-12 | 2011-09-21 | 重庆大学 | Biological carbonaceous filler and preparation method thereof |
| CN101817524A (en) * | 2010-05-05 | 2010-09-01 | 卞奎友 | Process for producing activated carbon by physical activation method |
| CN101830460A (en) * | 2010-05-26 | 2010-09-15 | 中国科学技术大学苏州研究院 | Active carbon particles and preparation method thereof |
| CN103274400A (en) * | 2013-05-07 | 2013-09-04 | 西北农林科技大学 | Method for producing active carbon from salix mongolica branches through pyrolysis |
| CN103274400B (en) * | 2013-05-07 | 2015-08-19 | 西北农林科技大学 | The method of gac is produced in the pyrolysis of salix monogolica branch wood |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20071121 |