CN101890334A - Preparation method of tea activated carbon - Google Patents
Preparation method of tea activated carbon Download PDFInfo
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- CN101890334A CN101890334A CN 201010223398 CN201010223398A CN101890334A CN 101890334 A CN101890334 A CN 101890334A CN 201010223398 CN201010223398 CN 201010223398 CN 201010223398 A CN201010223398 A CN 201010223398A CN 101890334 A CN101890334 A CN 101890334A
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Abstract
The invention discloses a preparation method of tea activated carbon, which comprises the steps of: mixing phosphoric acid solution and tea raw material which have the mass ratio of 30-50% according to the mass ratio between the solution and the tea of 2-3:1; impregnating the tea for 6-8h at the room temperature, activating the impregnated tea for 1-3h at 400-600 DEG C, and then using deionized water to wash the tea until the pH is 6-8 after activation; and then, drying the tea at 120 DEG C and grinding into 200 meshes, and obtaining the tea activated carbon; or putting the tea raw material into a tube furnace, and heating to 750 DEG C in a step type under the nitrogen atmosphere; then, filling steam or carbon dioxide, and maintaining the gas concentration to be 10-12%; heating to 850 DEG C, and then maintaining for 30-35min; cooling to room temperature under the nitrogen atmosphere, and taking out the tea and grinding into 200 meshes; and finally obtaining the tea activated carbon. The invention omits the processing of purification, thus greatly reducing the production cost, improving the production benefit and having wide application prospect.
Description
Technical field
The present invention relates to a kind of preparation method of active carbon, relate in particular to a kind of method of utilizing the preparation of tea tea activated carbon, this tea activated carbon can be used for fields such as medicine food, plumbing, environmental protection, is particularly useful for medicine, food service industry.
Background technology
Active carbon is the widely used sorbing material of a class, is widely used in fields such as pharmaceutical raw material, food additives, Cosmetic Manufacture, decolouring, absorption, environmental protection.Traditional method for preparation of active carbon is generally 2 kinds of chemical method and physics methods, and the main raw material(s) that uses is coal or natural plants etc., and the natural plants in the actual production process adopts hardwood or shell more.Along with people consume the popular of tea beverage, the amount of the output of tealeaves and immersion residue increases gradually, though tea or immersion residue have the good adsorption performance, its application is restricted.With the tea that reaches the food and medicine standard or soak residue, will help the production of medicine food level tea activated carbon as the Activated Carbon Production raw material.
In the Tea Production process, the tender point that generally adopts tea tree is as raw material, and this raw material is compared with hardwood commonly used, and difference is bigger.The tender point of tea tree contains a large amount of volatile oil, water soluble vitamin, carbohydrate, Tea Polyphenols etc., the cell membrane of tender shoots is grown imperfect simultaneously, cell membrane mainly is made of cellulose, hemicellulose level is low, therefore tealeaves and its immersion residue itself have fabulous porosity characteristic, and the micropore that helps tea activated carbon forms.
Summary of the invention
At existing preparation method of active carbon, the problem to be solved in the present invention is: provide a kind of tender shoots that utilizes natural plants to prepare the method for tea activated carbon, because the edibility of tealeaves, therefore the active carbon by preparation of tea does not contain harmful material, is particularly suitable for being applied to medicine and food service industry.Adopt the residual tea that soaked to prepare active carbon, effectively reduced production cost.
The method of tea activated carbon of the present invention, it is characterized in that: be 2-3 according to solution amount with the tea quality ratio: 1 amount is that the phosphoric acid solution of 30%-50% mixes with tea raw material with mass ratio, room temperature dipping 6～8h, tealeaves behind the dipping is put into muffle furnace and activate 1-3 hour under 400 ℃-600 ℃ temperature conditions, spend after the activation deionised water tealeaves to pH be 6-8, put into baking oven then, under 120 ℃ of conditions dry 2-5 hour, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon; Perhaps, tea raw material is put in the tube furnace, under the nitrogen atmosphere, be warming up to 300 ℃, constant temperature 30-35min is warming up to 500 ℃ again, constant temperature 30-35min after continuing to be warming up to 750 ℃, feeds steam or carbon dioxide again, the maintenance gas concentration is 10-12%, be warming up to 850 ℃ again, behind the maintenance 30-35min, under nitrogen atmosphere, be cooled to room temperature, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon.
The method of above-mentioned tea activated carbon, preferred embodiment be: according to solution amount and tea quality ratio is that 3: 1 amount is that 40% phosphoric acid solution mixes with tea raw material with mass ratio, room temperature dipping 6h, tealeaves behind the dipping is put into muffle furnace and activate 2 hours under 500 ℃ temperature conditions, spend after the activation deionised water tealeaves to pH be 7, put into baking oven then, under 120 ℃ of conditions dry 4 hours, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon; Perhaps, tea raw material is put in the tube furnace, under the nitrogen atmosphere, be warming up to 300 ℃, constant temperature 30min is warming up to 500 ℃ again, constant temperature 30min after continuing to be warming up to 750 ℃, feeds carbon dioxide again, keeping gas concentration is 10%, be warming up to 850 ℃ again, behind the maintenance 30min, under nitrogen atmosphere, be cooled to room temperature, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon.
In the method for above-mentioned tea activated carbon: described tea raw material is commercially available green tea, black tea, jasmine tea, oolong tea, white tea or the Pu'er tea drunk, or its residue that anhydrates after soaking.
Residue after tea activated carbon of the present invention soaks with various drink teas such as green tea, black tea, jasmine tea, oolong tea, white tea, Pu'er tea and their is a raw material, utilizes the method preparation of chemistry or physics.Be the active carbon of feedstock production with the tealeaves that reaches food-grade in the inventive method, do not contain harmful material, be suitable for the application of medicine food industry.Owing to saved purification process, and adopted residue to do raw material, greatly reduce production cost, improved productivity effect, have broad application prospects.
The specific embodiment
Embodiment 1:
Take by weighing 9.74g tealeaves,,, flooded 6 hours under the room temperature after mixing than the phosphoric acid solution that adds 30% (mass ratio) at 3: 1 by solution amount and tealeaves impregnating effect, put into muffle furnace then, under 400 ℃ the condition, activate 3 hours, spend after the activation deionised water to pH be 6-8, put into baking oven, drying is 2 hours under 120 ℃ of conditions, is ground to 200 orders, obtains 2.56g tea charcoal.Specific area is 750m
2/ g.
Embodiment 2:
Take by weighing the tealeaves residue that 10.12g soaked, added 45% phosphoric acid solution by solution amount and tealeaves impregnating effect than 2: 1, after mixing, dipping is 6 hours under the room temperature, put into muffle furnace then, under 600 ℃ the condition, activate 1 hour, spend after the activation deionised water to pH be 6-8, put into baking oven, drying is 2 hours under 120 ℃ of conditions, is ground to 200 orders, obtains 2.80g tea charcoal.Specific area is 730m
2/ g.
Embodiment 3:
Take by weighing 9.98g tealeaves, added 50% phosphoric acid solution by solution amount and tealeaves impregnating effect than 2: 1, after mixing, dipping is 6 hours under the room temperature, put into muffle furnace then, under 500 ℃ the condition, activate 2 hours, spend after the activation deionised water to pH be 6-8, put into baking oven, drying is 2 hours under 120 ℃ of conditions, is ground to 200 orders, obtains 2.63g tea charcoal.Specific area is 860m
2/ g.
Embodiment 4:
In tube furnace, under the nitrogen atmosphere, put into the tealeaves residue that 9.05g soaked, be warming up to 300 ℃, constant temperature 30min, heat up 500 ℃ again, constant temperature 30min, continue to be warming up to 750 ℃ after, feed steam, keep its concentration to be about 10%, slowly be warming up to 850 ℃, behind the maintenance 30min, nitrogen atmosphere drops to room temperature, obtains 2.13g tea charcoal after the grinding.Specific area is 510m
2/ g.
Embodiment 5:
In tube furnace, under the nitrogen atmosphere, put into 11.23g tealeaves, be warming up to 300 ℃, constant temperature 30min, heat up 500 ℃ again, constant temperature 30min, continue to be warming up to 750 ℃ after, feed carbon dioxide, keep its concentration to be about 10%, slowly be warming up to 850 ℃, behind the maintenance 30min, nitrogen atmosphere drops to room temperature, obtains 2.40g tea charcoal after the grinding.Specific area is 550m
2/ g.
Claims (3)
1. the method for a tea activated carbon, it is characterized in that: be 2-3 according to solution amount with the tea quality ratio: 1 amount is that the phosphoric acid solution of 30%-50% mixes with tea raw material with mass ratio, room temperature dipping 6～8h, tealeaves behind the dipping is put into muffle furnace and activate 1-3 hour under 400 ℃-600 ℃ temperature conditions, spend after the activation deionised water tealeaves to pH be 6-8, put into baking oven then, under 120 ℃ of conditions dry 2-5 hour, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon; Perhaps, tea raw material is put in the tube furnace, under the nitrogen atmosphere, be warming up to 300 ℃, constant temperature 30-35min is warming up to 500 ℃ again, constant temperature 30-35min after continuing to be warming up to 750 ℃, feeds steam or carbon dioxide again, the maintenance gas concentration is 10-12%, be warming up to 850 ℃ again, behind the maintenance 30-35min, under nitrogen atmosphere, be cooled to room temperature, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon.
2. the method for tea activated carbon according to claim 1, it is characterized in that: according to solution amount and tea quality ratio is that 3: 1 amount is that 40% phosphoric acid solution mixes with tea raw material with mass ratio, room temperature dipping 6h, tealeaves behind the dipping is put into muffle furnace and activate 2 hours under 500 ℃ temperature conditions, spend after the activation deionised water tealeaves to pH be 7, put into baking oven then, under 120 ℃ of conditions dry 4 hours, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon; Perhaps, tea raw material is put in the tube furnace, under the nitrogen atmosphere, be warming up to 300 ℃, constant temperature 30min is warming up to 500 ℃ again, constant temperature 30min after continuing to be warming up to 750 ℃, feeds carbon dioxide again, keeping gas concentration is 10%, be warming up to 850 ℃ again, behind the maintenance 30min, under nitrogen atmosphere, be cooled to room temperature, take out tealeaves and it is ground to 200 orders, promptly get tea activated carbon.
3. the method for tea activated carbon as claimed in claim 1 or 2, it is characterized in that: described tea raw material is commercially available green tea, black tea, jasmine tea, oolong tea, white tea or the Pu'er tea drunk, or its residue that anhydrates after soaking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010223398 CN101890334A (en) | 2010-07-12 | 2010-07-12 | Preparation method of tea activated carbon |
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| CN 201010223398 CN101890334A (en) | 2010-07-12 | 2010-07-12 | Preparation method of tea activated carbon |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605458A (en) * | 2012-03-29 | 2012-07-25 | 福建省晋江市华宇织造有限公司 | Tea charcoal terylene monofilament and preparation method thereof |
| CN106467296A (en) * | 2015-08-13 | 2017-03-01 | 明道学校财团法人明道大学 | Tea carbon and preparation method thereof |
| CN106698419A (en) * | 2016-11-16 | 2017-05-24 | 四川省林业科学研究院 | Activated carbon prepared from leaf residues of cinnamomum longepaniculatum and preparation method of activated carbon |
| CN109731117A (en) * | 2019-01-22 | 2019-05-10 | 荣德铵家新型材料(福州)有限公司 | A kind of method that tea activated carbon prepares no-smoke incense |
| CN113152780A (en) * | 2021-05-28 | 2021-07-23 | 曲靖市中泰新型墙材有限公司 | Autoclaved aerated concrete plate and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724348A (en) * | 2005-07-11 | 2006-01-25 | 高逸 | Process for preparing active carbon using tea processing refuse as raw material |
-
2010
- 2010-07-12 CN CN 201010223398 patent/CN101890334A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724348A (en) * | 2005-07-11 | 2006-01-25 | 高逸 | Process for preparing active carbon using tea processing refuse as raw material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605458A (en) * | 2012-03-29 | 2012-07-25 | 福建省晋江市华宇织造有限公司 | Tea charcoal terylene monofilament and preparation method thereof |
| CN102605458B (en) * | 2012-03-29 | 2014-01-08 | 福建省晋江市华宇织造有限公司 | Tea charcoal terylene monofilament and preparation method thereof |
| CN106467296A (en) * | 2015-08-13 | 2017-03-01 | 明道学校财团法人明道大学 | Tea carbon and preparation method thereof |
| CN106698419A (en) * | 2016-11-16 | 2017-05-24 | 四川省林业科学研究院 | Activated carbon prepared from leaf residues of cinnamomum longepaniculatum and preparation method of activated carbon |
| CN109731117A (en) * | 2019-01-22 | 2019-05-10 | 荣德铵家新型材料(福州)有限公司 | A kind of method that tea activated carbon prepares no-smoke incense |
| CN113152780A (en) * | 2021-05-28 | 2021-07-23 | 曲靖市中泰新型墙材有限公司 | Autoclaved aerated concrete plate and preparation method thereof |
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Application publication date: 20101124 |