CN103818905A - Method for preparing activated carbon by using hemp stalks, walnut shells and phoenix tree leaves - Google Patents
Method for preparing activated carbon by using hemp stalks, walnut shells and phoenix tree leaves Download PDFInfo
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- CN103818905A CN103818905A CN201310496766.9A CN201310496766A CN103818905A CN 103818905 A CN103818905 A CN 103818905A CN 201310496766 A CN201310496766 A CN 201310496766A CN 103818905 A CN103818905 A CN 103818905A
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Abstract
The invention discloses a method for preparing activated carbon by using hemp stalks, walnut shells and phoenix tree leaves. The method comprises the steps of mixing the hemp stalks, the walnut shells and the phoenix tree leaves according to a ratio, smashing the dried mixture to obtain raw materials, uniformly mixing the raw material particles with an activating agent to obtain mixed materials, adding water for impregnation, putting the impregnated materials into a microwave oven for carbonization activation, sequentially performing pickling, washing and drying, grinding the dried raw materials, screening the ground raw materials through sieves of different meshes to obtain activated carbons with three fineness degrees, and mixing the activated carbons according to a ratio to form the final product. The activated carbon prepared by the method disclosed by the invention has good adsorption performance and is long in service life.
Description
Technical field
The application relates to a kind of preparation method of gac, relates in particular to a kind of method of utilizing waste of flax, nut-shell, Chinese parasol leaf to prepare gac.
Background technology
Gac, owing to having flourishing internal void structure, therefore becomes a kind of extremely important sorbent material, is widely used in many fields such as water treatment, environment protection, agricultural.The raw material of preparing gac is a lot, and the plant materials such as existing timber, husk, crop material also have coal, refinery coke, rubber etc.In energy dilemma and environmental problem day by day serious today, utilize the agriculture and forestry organic waste material cheap, output is abundant to prepare gac and receive increasing concern.But existing technique is conventionally all more single in the time selecting agriculture and forestry organic waste material raw material, and therefore the performance of prepared gac is comparatively uneven, is unfavorable for the reasonable utilization of agriculture and forestry organic waste material.
Summary of the invention
The present invention aims to provide a kind of method for preparation of active carbon, and it adopts multiple agriculture and forestry organic waste material to be mixed in proportion formation raw material, particularly, comprises the steps:
(1) choose waste of flax, nut-shell, Chinese parasol leaf and be mixed in proportion, at the temperature of 115 degrees Celsius, dry 18 hours;
(2) mixture after step 1 is dried is crushed to particle diameter 1.6-1.8mm left and right, obtains feed particles;
(3) by the feed particles in step 2 according to mixing in proportion to obtain mixture with potassium hydroxide and salt of wormwood, add and the water of 51 degrees Celsius of the weight such as mixture, flood 18 hours;
(4) material after the dipping in step 3 is put into microwave oven, preferably, carbonization-activation 7 minutes under the microwave exposure power of 400-450W.
(5) adopt the hydrochloric acid of 1.5 moles every liter under 85 degrees Celsius, to boil 40 minutes material after the activation in step 4, more neutral in rinsing in pure water, then under 130 degrees Celsius, dry 10 hours.
(6) drying material in step 5 is ground, and adopt the sieve of different meshes to sieve three grades of fineness gacs of acquisition, they are mixed in proportion to formation the finished product.
Preferably, choose waste of flax, nut-shell, Chinese parasol leaf in 1:2:1 or the mixing of 1:2:2 ratio.
Preferably, the part by weight of step 3 Raw particle and potassium hydroxide and salt of wormwood is 1:2:1 or 1:2:2.
Preferably, in step 6, different meshes is 160 orders, 200 orders and 240 orders, and three grades of fineness gac weight ratios are 1:3:2.
Preferably, in step 6, different meshes is 150 orders, 200 orders and 250 orders, and three grades of fineness gac weight ratios are 1:3:1.
Because the present invention adopts agriculture and forestry organic waste material as raw material, reduce the manufacturing cost of gac; And because having adopted multiple different agriculture and forestry organic waste material, the present invention is mixed in proportion formation raw material, take full advantage of the feature that different agriculture and forestry organic waste materials possess the compounds contents such as different xylogen, Mierocrystalline cellulose, hemicellulose, different agriculture and forestry organic waste materials are learnt from other's strong points to offset one's weaknesses mutually, strengthen the utilising efficiency of agriculture and forestry organic waste material, improved the performance of prepared gac.
Embodiment
Embodiment mono-
(1) choose waste of flax, nut-shell, Chinese parasol leaf according to the ratio mixing of weight ratio 1:2:1, at the temperature of 115 degrees Celsius, dry 18 hours.
(2) mixture after step 1 is dried is crushed to particle diameter 1.8mm left and right, obtains feed particles.
(3) by the feed particles in step 2 according to mixing to obtain mixture with the ratio of potassium hydroxide and salt of wormwood weight ratio 1:2:1, add and the water of 51 degrees Celsius of the weight such as mixture, flood 18 hours.
(4) material after the dipping in step 3 is put into microwave oven, carbonization-activation 7 minutes under the microwave exposure power of 400W.
(5) adopt the hydrochloric acid of 1.5 moles every liter under 85 degrees Celsius, to boil 40 minutes material after the activation in step 4, more neutral in rinsing in pure water, then under 130 degrees Celsius, dry 10 hours.
(6) drying material in step 6 is ground, and adopt 160 orders, 200 orders and 240 object sieves to sieve three grades of fineness gacs of acquisition, (in 160 orders, 200 orders and 240 orders order) is mixed to form the finished product by them according to the ratio of weight ratio 1:3:2.Owing to adopting multistage mixed structure herein, the product that obtains has better level and density, therefore has better absorption property and work-ing life.
According to State Standard of the People's Republic of China GB/T12496.8-1999 and GB/T12496.10-1999, the prepared activated carbon-iodine adsorptive value of the present invention is 1332 milligrams every gram, and methylene blue adsorption value is 169 milliliters every gram.
Embodiment bis-
(1) choose waste of flax, nut-shell, Chinese parasol leaf according to the ratio mixing of weight ratio 1:2:2, at the temperature of 115 degrees Celsius, dry 18 hours.
(2) mixture after step 1 is dried is crushed to particle diameter 1.6mm left and right, obtains feed particles.
(3) by the feed particles in step 2 according to mixing to obtain mixture with the ratio of potassium hydroxide and salt of wormwood weight ratio 1:2:2, add and the water of 51 degrees Celsius of the weight such as mixture, flood 18 hours.
(4) material after the dipping in step 3 is put into microwave oven, carbonization-activation 7 minutes under the microwave exposure power of 450W.
(5) adopt the hydrochloric acid of 1.5 moles every liter under 85 degrees Celsius, to boil 40 minutes material after the activation in step 4, more neutral in rinsing in pure water, then under 130 degrees Celsius, dry 10 hours.
(6) drying material in step 6 is ground, and adopt 150 orders, 200 orders and 250 object sieves to sieve three grades of fineness gacs of acquisition, (in 150 orders, 200 orders and 250 orders order) is mixed to form the finished product by them according to the ratio of weight ratio 1:3:1.Owing to adopting multistage mixed structure herein, the product that obtains has better level and density, therefore has better absorption property and work-ing life.
According to State Standard of the People's Republic of China GB/T12496.8-1999 and GB/T12496.10-1999, the prepared activated carbon-iodine adsorptive value of the present invention is 1341 milligrams every gram, and methylene blue adsorption value is 173 milliliters every gram.
Those skilled in the art can make and replacing or modification content of the present invention according to content disclosed by the invention and the art technology of grasping; but these replacements or modification should not be considered as departing from the present invention's design, and these replacements or modification are all in the claimed interest field of the present invention.
Claims (5)
1. utilize waste of flax, nut-shell, Chinese parasol leaf to prepare a method for gac, comprise the steps:
(1) choose waste of flax, nut-shell, Chinese parasol leaf and be mixed in proportion, at the temperature of 115 degrees Celsius, dry 18 hours;
(2) mixture after step 1 is dried is crushed to particle diameter 1.6-1.8mm left and right, obtains feed particles;
(3) by the feed particles in step 2 according to mixing in proportion to obtain mixture with potassium hydroxide and salt of wormwood, add and the water of 51 degrees Celsius of the weight such as mixture, flood 18 hours;
(4) material after the dipping in step 3 is put into microwave oven, preferably, carbonization-activation 7 minutes under the microwave exposure power of 400-450W.
(5) adopt the hydrochloric acid of 1.5 moles every liter under 85 degrees Celsius, to boil 40 minutes material after the activation in step 4, more neutral in rinsing in pure water, then under 130 degrees Celsius, dry 10 hours.
(6) drying material in step 5 is ground, and adopt the sieve of different meshes to sieve three grades of fineness gacs of acquisition, they are mixed in proportion to formation the finished product.
2. the method for preparing gac according to claim 1, is characterized in that: choose waste of flax, nut-shell, Chinese parasol leaf in 1:2:1 or the mixing of 1:2:2 ratio.
3. the method for preparing gac according to claim 1, is characterized in that: the part by weight of step 3 Raw particle and potassium hydroxide and salt of wormwood is 1:2:1 or 1:2:2.
4. the method for preparing gac according to claim 1, is characterized in that: in step 6, different meshes is 160 orders, 200 orders and 240 orders, and three grades of fineness gac weight ratios are 1:3:2.
5. the method for preparing gac according to claim 1, is characterized in that: in step 6, different meshes is 150 orders, 200 orders and 250 orders, and three grades of fineness gac weight ratios are 1:3:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310496766.9A CN103818905B (en) | 2013-10-21 | 2013-10-21 | A kind of waste of flax, nut-shell, Chinese parasol leaf prepare the method for gac |
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| CN201310496766.9A CN103818905B (en) | 2013-10-21 | 2013-10-21 | A kind of waste of flax, nut-shell, Chinese parasol leaf prepare the method for gac |
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| CN103818905A true CN103818905A (en) | 2014-05-28 |
| CN103818905B CN103818905B (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255561A (en) * | 2019-07-26 | 2019-09-20 | 合肥工业大学 | A kind of N doping biomass porous carbon and preparation method thereof |
| CN110255556A (en) * | 2019-06-27 | 2019-09-20 | 清华大学 | The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0747321A2 (en) * | 1995-06-06 | 1996-12-11 | Mitsubishi Chemical Corporation | Granulated active carbon and process for its production |
| CN1970444A (en) * | 2006-12-07 | 2007-05-30 | 湖南大学 | Microwave radiation method for preparing activated carbon with high specific surface area |
| CN101643208A (en) * | 2009-01-16 | 2010-02-10 | 徐克文 | Composite biological activated carbon and rapid preparation method thereof |
-
2013
- 2013-10-21 CN CN201310496766.9A patent/CN103818905B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0747321A2 (en) * | 1995-06-06 | 1996-12-11 | Mitsubishi Chemical Corporation | Granulated active carbon and process for its production |
| CN1970444A (en) * | 2006-12-07 | 2007-05-30 | 湖南大学 | Microwave radiation method for preparing activated carbon with high specific surface area |
| CN101643208A (en) * | 2009-01-16 | 2010-02-10 | 徐克文 | Composite biological activated carbon and rapid preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 康琴琴等: "微波法制备活性炭及去除水中双酚 A 的研究", 《苏州科技学院学报（工程技术版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255556A (en) * | 2019-06-27 | 2019-09-20 | 清华大学 | The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid |
| CN110255561A (en) * | 2019-07-26 | 2019-09-20 | 合肥工业大学 | A kind of N doping biomass porous carbon and preparation method thereof |
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| CN103818905B (en) | 2015-09-23 |
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Effective date of registration: 20170724 Address after: Licheng Town East Street Liyang city 213300 Jiangsu city of Changzhou province No. 182 Patentee after: Liyang Technology Development Center Address before: Li Town of Liyang City, Jiangsu province 213300 Changzhou City Dongmen Street No. 67 Patentee before: LIYANG ZHEDA ACADEMIA RESEARCH SERVICE CENTER CO., LTD. |