CN103288081A - Method for preparing activated carbon by utilizing jute straws - Google Patents
Method for preparing activated carbon by utilizing jute straws Download PDFInfo
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- CN103288081A CN103288081A CN2013102678255A CN201310267825A CN103288081A CN 103288081 A CN103288081 A CN 103288081A CN 2013102678255 A CN2013102678255 A CN 2013102678255A CN 201310267825 A CN201310267825 A CN 201310267825A CN 103288081 A CN103288081 A CN 103288081A
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- jute
- active carbon
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Abstract
The invention relates to a method for preparing activated carbon by utilizing jute straws. The method comprises the following steps: slicing aired jute straws into sections; soaking by using a potassium carbonate/potassium dihydrogen phosphate liquor; fishing out and airing till no water drops; heating, carbonizing and cooling to room temperature in a sealed container; soaking and carrying out acid washing by an acidic liquor; taking out and draining off; then rinsing by deionized water and drying; and cooling to room temperature and crushing to obtain activated carbon. According to the method for preparing activated carbon, wastes of agricultural products are utilized, so that the additional value of agricultural products is improved, and therefore, the environmental protective pressure is effectively reduced. The method is simpler in process, short in flow and beneficial to popularize.
Description
Technical field
The present invention relates to a kind of jute stalk that utilizes and prepare process of active carbon.
Background technology
Jute, Tiliaceae Corchorus plant, phloem fiber crop, annual herb.Have another name called network fiber crops, green fiber crops.The China main producing region is provinces such as Guangdong, Zhejiang, Taiwan.The economic worth of jute mainly is to utilize numb skin, namely carries out the retted fibre fine purifiation that comes unstuck after the numb strain results.The fine purifiation rate is about 55%.Jute fibre white, glossy, hygroscopic property is good, and aproll is fast, and is main for making
Gunnysack, burlap usefulness, also optional paper, rope making rope, weavening carpet and curtain etc.And remaining boon (waste of flax) does not just have anything to act on basically, and the rural area generally is used as the material that makes a fire.Because jute stalk fiber content is big, directly burn and not only wasted material, and the burning that acts as a fuel, also can cause certain environment to pollute relatively.Therefore, propose to produce gac with the jute stalk as raw material.Increase kind of the numb tree farmer people's income, improve additional value of farm products.On the other hand; because gac is the carbonaceous material that has flourishing pore texture, huge surface-area and outstanding absorption property are arranged, be widely used in the many-side in national defence, chemical industry, oil, ocean, food, medicine, light industry, nuclear industry, urban construction, environment protection and the people's life.Along with people to the environmental problem pay attention to day by day, the demand of gac presents year by year the trend that increases.Therefore, utilize the jute stalk to prepare gac important realistic meaning is arranged.
Consider that from economic cause alkali-metal oxyhydroxide (mainly being lithium, sodium, potassium) is a kind of good activator, is widely adopted in producing the gac process.For more efficient use jute stalk, reduce environmental pollution, improve additional value of farm products, the application proposes to utilize the jute stalk as raw material, and control preparation activated carbon process parameter prepares process of active carbon with the single stage method carbonization.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of jute stalk that utilizes and prepares process of active carbon, to reduce environmental pollution, carbon emission, improves the comprehensive utilization ratio of additional value of farm products and agricultural-food.
The present invention solves the problems of the technologies described above with following technical scheme:
Step of preparation process is:
1, get oneself through natural wind dry doubling drying raw material jute stalk, be cut into the segment that length and width is respectively 3-5cm; With salt of wormwood and the potassium primary phosphate mixed liquid dipping of equal mass, mass ratio is jute Gan ︰ mixed solution=1 ︰ 4-8; 40 ℃-50 ℃ of soaking temperatures, the time is 40-48 hour;
2, pick up dry do not have drip after, with the heat-up rate of 3-6/min, to 800-1100 ℃, make its charing at the encloses container internal heating, carbonization time is controlled at 4-6h;
3, behind the cool to room temperature, be hydrochloric acid soln immersion, the pickling 3-6h of 20-25% with volumetric ratio;
4, after taking-up drained, making its pH value with rinsed with deionized water again was 7;
5, with the material rebake 3-5h that obtains, temperature is controlled to be 110-135 ℃;
6, be cooled to room temperature, obtain granular active carbon.
After the raw material jute stalk natural wind dry doubling drying, require to reach following quality index: quality is than moisture≤12%; Volatility≤70%; Fixed carbon 〉=15%; Ash content≤3%;
Require the salt of wormwood quality of immersion jute stalk than purity 〉=90%, potassium primary phosphate purity 〉=95%.
In the time of salt of wormwood and potassium primary phosphate mixed liquid dipping jute stalk, each stirs once when 12h and 36h, 30-60r/min, each 3-5 minute.
The active carbon finished products of making, iodine sorption value reach the standard-required of GB/T12496.8-1999, and methylene blue adsorption value reaches the technical requirements of GB/T12491.10-1999.
Prepare gac with method of the present invention, utilized the waste of agricultural-food, improved additional value of farm products, effectively reduce the pressure of protection environment, and technology is simpler, flow process is short, is beneficial to popularization.
Embodiment
The present invention proposes to utilize the jute stalk to be raw material, utilizes fuzzy stratification to control and produces the activated carbon process parameter, produces gac with the single stage method carbonization, and the gac of making meets national technical standard.
Embodiment 1:
Embodiment 2:
Embodiment 3:
The leading indicator of the activated carbon product of embodiment 2 is:
| CTC adsorptive value (%) | 100-140% |
| Benzene absorption (%) | 45-65% |
| Iodine sorption value (mg/g) | 1100-1300 |
| Specific surface area (m 2/g） | 1400～2400 |
| Apparent density (g/ml) | 0.33～0.38 |
| Point of ignition (℃) | 400～450 |
| Intensity (%) | 95-99.9% |
| Ash content (%) | 3-6 |
| Moisture is less than (%) | 5 |
| Granularity (mesh) | 1.2,3,4mm |
Claims (5)
1. one kind is utilized the jute stalk to prepare process of active carbon, it is characterized in that processing step is:
⑴ get oneself through air-dry and dried raw material jute stalk, is cut into length, and wide is the segment of 3-5cm; With salt of wormwood and the potassium primary phosphate mixed liquid dipping of equal mass, mass ratio is jute Gan ︰ mixed solution=1 ︰ 4-8; 40 ℃-50 ℃ of soaking temperatures, the time is 40-48 hour;
Pick up dry do not have drip after, with the heat-up rate of 3-6 ℃/min, to 800-1100 ℃, make its charing at the encloses container internal heating, carbonization time is controlled at 4-6h;
⑶ behind the cool to room temperature, be hydrochloric acid soln immersion, the pickling 3-6h of 20-25% with volumetric ratio;
⑷ after took out and drain, making its pH value with rinsed with deionized water again was 7;
⑸ with the material rebake 3-5h that obtains, and temperature is controlled to be 110-135 ℃;
⑹ be cooled to room temperature, obtains the granular active carbon product.
2. the jute stalk that utilizes as claimed in claim 1 prepares process of active carbon, it is characterized in that raw material jute stalk natural wind dry doubling drying after, require to reach following quality index: moisture mass ratio≤12%; Volatility mass ratio≤70%; Fixed carbon mass ratio 〉=15%; Ash content mass ratio≤3%.
3. the jute stalk that utilizes as claimed in claim 1 prepares process of active carbon, it is characterized in that salt of wormwood purity mass ratio 〉=90% of requirement immersion jute stalk, potassium primary phosphate purity mass ratio 〉=95%.
4. the jute stalk that utilizes as claimed in claim 1 prepares process of active carbon, it is characterized in that in the time of salt of wormwood and potassium primary phosphate mixed liquid dipping jute stalk, and each stirs once when 12h and 36h, and stirring velocity is 30-60r/min, each 3-5 minute.
5. the jute stalk that utilizes as claimed in claim 1 prepares process of active carbon, it is characterized in that the active carbon finished products made, and iodine sorption value reaches the standard-required of GB/T12496.8-1999, and methylene blue adsorption value reaches the technical requirements of GB/T12491.10-1999.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102678255A CN103288081A (en) | 2013-06-28 | 2013-06-28 | Method for preparing activated carbon by utilizing jute straws |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102678255A CN103288081A (en) | 2013-06-28 | 2013-06-28 | Method for preparing activated carbon by utilizing jute straws |
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| CN103288081A true CN103288081A (en) | 2013-09-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003386A (en) * | 2014-06-06 | 2014-08-27 | 南京工程学院 | Method for preparing powder active carbon by taking cow dung as raw material |
| CN109195907A (en) * | 2016-05-30 | 2019-01-11 | 爱德温工业公司 | Active carbon and preparation method thereof with high surface area |
| CN113113602A (en) * | 2021-04-06 | 2021-07-13 | 常德速碳新能源科技有限公司 | Hard carbon negative electrode material for lithium ion secondary battery and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040024074A1 (en) * | 2000-08-09 | 2004-02-05 | Tennison Stephen Robert | Porous carbons |
| CN103121677A (en) * | 2013-03-06 | 2013-05-29 | 广西大学 | Method for preparing activated carbon by using banana tree trunk |
-
2013
- 2013-06-28 CN CN2013102678255A patent/CN103288081A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040024074A1 (en) * | 2000-08-09 | 2004-02-05 | Tennison Stephen Robert | Porous carbons |
| CN103121677A (en) * | 2013-03-06 | 2013-05-29 | 广西大学 | Method for preparing activated carbon by using banana tree trunk |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003386A (en) * | 2014-06-06 | 2014-08-27 | 南京工程学院 | Method for preparing powder active carbon by taking cow dung as raw material |
| CN109195907A (en) * | 2016-05-30 | 2019-01-11 | 爱德温工业公司 | Active carbon and preparation method thereof with high surface area |
| CN109195907B (en) * | 2016-05-30 | 2023-07-25 | 爱德温工业公司 | Activated carbon with high surface area and preparation method thereof |
| CN113113602A (en) * | 2021-04-06 | 2021-07-13 | 常德速碳新能源科技有限公司 | Hard carbon negative electrode material for lithium ion secondary battery and preparation method thereof |
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Application publication date: 20130911 |