CN109553099A - A method of active carbon is prepared using sawdust - Google Patents
A method of active carbon is prepared using sawdust Download PDFInfo
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- CN109553099A CN109553099A CN201710872486.1A CN201710872486A CN109553099A CN 109553099 A CN109553099 A CN 109553099A CN 201710872486 A CN201710872486 A CN 201710872486A CN 109553099 A CN109553099 A CN 109553099A
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Abstract
The invention discloses a kind of methods for preparing active carbon using sawdust, comprising the following steps: takes sawdust, cleaned crushed after being dried；Zinc chloride will be added in sawdust powder, co-grinding simultaneously stirs evenly to obtain mixed material, and the mass ratio of sawdust powder and zinc chloride is 1:(0.5~2.5)；Mixed material is compressed into column shaped granule at normal temperature；Shaped granule is placed in high temperature process furnances, under nitrogen protection, so that high temperature process furnances is warming up to 500 DEG C~950 DEG C, and keep the temperature 20min~80min；Material in high temperature process furnances is taken out, cooled to room temperature obtains column type active carbon particles；It is washed to neutrality with deionized water after column type active carbon particles pickling, is then dried.The invention has the advantages that the raw material for using sawdust to prepare as active carbon, the a series of performance requirement that active carbon has can be reached, sawdust is common wood-based product's processing waste material, ensure that the sufficient supply of active carbon raw material, to reduce activated carbon product cost.
Description
Technical field
The present invention relates to a kind of preparation methods of active carbon, more particularly, to a kind of side for preparing active carbon using sawdust
Method.
Background technique
Active carbon as a kind of highly important micro-porous adsorption agent there is high specific surface area and hole abundant to tie
Structure is widely used in water process, air cleaning, catalyst carrier, solvent recovery, food and drink purification, flue gas desulfurization, receives
Rice material etc..
With current environmental pollution be on the rise and the expansion of activated carbon application range, to the demand day of active carbon
Benefit increases, the existing activated carbon product in China with coal quality and shell class active carbon based on, main raw material include high-quality
Coal particle, walnut shell, coconut husk, pine nut shell etc., still, due to by raw material source and quality limited, cause at present
Coal quality and shell class activated carbon product production and application effect be restricted, be unable to satisfy the market demand, also cause phase
The selling at exorbitant prices answered.
Summary of the invention
Goal of the invention: in view of the above-mentioned problems, the object of the present invention is to provide a kind of method for preparing active carbon using sawdust,
Break raw material sources limitation, reduces cost.
Technical solution: a method of active carbon is prepared using sawdust, comprising the following steps:
Step 1: taking sawdust, and it is spare to cross 30 meshes for cleaned crushed after being dried；
Step 2: will be added zinc chloride in sawdust powder, co-grinding simultaneously stirs evenly to obtain mixed material, sawdust powder with
The mass ratio of zinc chloride is 1:(0.5~2.5)；
Step 3: mixed material is compressed into the column shaped granule that length is 20mm, diameter is 10mm at normal temperature；
Step 4: shaped granule is placed in high temperature process furnances, under nitrogen protection, high temperature process furnances is made to be warming up to 500
DEG C~950 DEG C, and keep the temperature 20min~80min；
Step 5: taking out material in high temperature process furnances, and cooled to room temperature obtains column type active carbon particles；
Step 6: being washed to neutrality with deionized water after column type active carbon particles pickling, is then placed in electric heating constant temperature air blast
It is dried in drying box.
Further, in step 2, the moisture content of the mixed material of sawdust powder and zinc chloride is 19%.
Further, in step 4, the heating rate of high temperature process furnances is 5 DEG C/min~8 DEG C/min.
Further, in step 3, the compact density of shaped granule is 1.4g/cm3~1.5g/cm3。
Further, in step 4, the feed rate of nitrogen protection is 50mL/min.
Further, in step 6, pickling solution is the hydrochloric acid solution of 0.12mol/L.
The utility model has the advantages that compared with prior art, the invention has the advantages that the former material for using sawdust to prepare as active carbon
Material, the active carbon as made from related process method have very high mesoporous, can reach active carbon have it is a series of
Performance requirement, sawdust is common wood-based product's processing waste material, ensure that the sufficient supply of active carbon raw material, and reduce
The cost of raw material improves the market competitiveness to reduce activated carbon product cost.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
A method of active carbon is prepared using sawdust, comprising the following steps:
Step 1: taking sawdust, and it is spare to cross 30 meshes for cleaned crushed after being dried；
Step 2: will be added zinc chloride in sawdust powder, co-grinding simultaneously stirs evenly to obtain mixed material, sawdust powder with
The mass ratio of zinc chloride is 1:(0.5~2.5), the moisture content of the mixed material of sawdust powder and zinc chloride is 19%；
Mixed material: being compressed into the column shaped granule that length is 20mm, diameter is 10mm by step 3 at normal temperature, at
The compact density of type particle is 1.4g/cm3~1.5g/cm3；
Step 4: shaped granule is placed in high temperature process furnances, under nitrogen protection, high temperature process furnances is made to be warming up to 500
DEG C~950 DEG C, and 20min~80min is kept the temperature, the heating rate of high temperature process furnances is 5 DEG C/min~8 DEG C/min, nitrogen protection
Feed rate be 50mL/min；
Step 5: taking out material in high temperature process furnances, and cooled to room temperature obtains column type active carbon particles；
Step 6: being washed to neutrality with deionized water after column type active carbon particles pickling, is then placed in electric heating constant temperature air blast
It is dried in drying box, pickling solution is the hydrochloric acid solution of 0.12mol/L.
When the mass ratio of sawdust and zinc chloride is 1:1, the compact density of shaped granule is 1.4g/cm3, high temperature process furnances
Temperature is 950 DEG C, soaking time 60min, and the iodine sorption value of obtained active carbon is 1320.92mg/g, BET specific surface area
For 2105m2/ g, and mesoporous reaches 71.54%.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of method for preparing active carbon using sawdust, it is characterised in that the following steps are included:
Step 1: taking sawdust, and it is spare to cross 30 meshes for cleaned crushed after being dried；
Step 2: will be added zinc chloride in sawdust powder, co-grinding simultaneously stirs evenly to obtain mixed material, sawdust powder and chlorination
The mass ratio of zinc is 1:(0.5~2.5)；
Step 3: mixed material is compressed into the column shaped granule that length is 20mm, diameter is 10mm at normal temperature；
Step 4: shaped granule is placed in high temperature process furnances, under nitrogen protection, make high temperature process furnances be warming up to 500 DEG C~
950 DEG C, and keep the temperature 20min~80min；
Step 5: taking out material in high temperature process furnances, and cooled to room temperature obtains column type active carbon particles；
Step 6: being washed to neutrality with deionized water after column type active carbon particles pickling, is then placed in electric heating constant temperature forced air drying
It is dried in case.
2. a kind of method for preparing active carbon using sawdust according to claim 1, it is characterised in that: in step 2,
The moisture content of the mixed material of sawdust powder and zinc chloride is 19%.
3. a kind of method for preparing active carbon using sawdust according to claim 1, it is characterised in that: in step 4,
The heating rate of high temperature process furnances is 5 DEG C/min~8 DEG C/min.
4. a kind of method for preparing active carbon using sawdust according to claim 1, it is characterised in that: in step 3,
The compact density of shaped granule is 1.4g/cm3~1.5g/cm3。
5. a kind of method for preparing active carbon using sawdust according to claim 1, it is characterised in that: in step 4,
The feed rate of nitrogen protection is 50mL/min.
6. a kind of method for preparing active carbon using sawdust according to claim 1, it is characterised in that: in step 6,
Pickling solution is the hydrochloric acid solution of 0.12mol/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710872486.1A CN109553099A (en) | 2017-09-25 | 2017-09-25 | A method of active carbon is prepared using sawdust |
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| CN201710872486.1A CN109553099A (en) | 2017-09-25 | 2017-09-25 | A method of active carbon is prepared using sawdust |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113546603A (en) * | 2020-04-24 | 2021-10-26 | 桐源（上海）网络技术有限公司 | Preparation method of air purification antibacterial activated carbon |
| CN113620290A (en) * | 2020-05-06 | 2021-11-09 | 桐源（上海）网络技术有限公司 | Preparation method of air purification active carbon adsorption material |
| CN117049914A (en) * | 2023-08-18 | 2023-11-14 | 山东和田旺生物科技有限公司 | Multifunctional compound microbial fertilizer and production method thereof |
-
2017
- 2017-09-25 CN CN201710872486.1A patent/CN109553099A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113546603A (en) * | 2020-04-24 | 2021-10-26 | 桐源（上海）网络技术有限公司 | Preparation method of air purification antibacterial activated carbon |
| CN113620290A (en) * | 2020-05-06 | 2021-11-09 | 桐源（上海）网络技术有限公司 | Preparation method of air purification active carbon adsorption material |
| CN113620290B (en) * | 2020-05-06 | 2023-03-10 | 桐源（上海）网络技术有限公司 | Preparation method of air purification activated carbon adsorption material |
| CN117049914A (en) * | 2023-08-18 | 2023-11-14 | 山东和田旺生物科技有限公司 | Multifunctional compound microbial fertilizer and production method thereof |
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Application publication date: 20190402 |