CN106006640A - Straw-based activated carbon preparation process - Google Patents
Straw-based activated carbon preparation process Download PDFInfo
- Publication number
- CN106006640A CN106006640A CN201610594043.6A CN201610594043A CN106006640A CN 106006640 A CN106006640 A CN 106006640A CN 201610594043 A CN201610594043 A CN 201610594043A CN 106006640 A CN106006640 A CN 106006640A
- Authority
- CN
- China
- Prior art keywords
- straw
- activated carbon
- processing technology
- technology based
- described step
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a straw-based activated carbon preparation process, and relates to the field of material preparation. The activated carbon preparation process taking straws as raw materials is implemented by the procedures of straw pretreatment, activator addition, pyrolysis, PH regulation, cleaning, drying and grinding, and a huge amount of straws in China can be treated to obtain an excellent adsorbent with great effects in the nowadays society. According to the technical scheme, the process is simple, reasonable and high in yield, a product is green and lower in cost, and environmental pollution is reduced.
Description
Technical field
The present invention relates to field of material preparation, make work particularly to a kind of activated carbon based on straw
Skill.
Background technology
China is a large agricultural country, and agricultural wastes exist the feature that yield is big, kind is many, the most often
Agricultural crop straw the most up to 7.0 × 108t/a that year produces.At present, at the most frequently used solid waste
Mode of putting mainly has: 3 kinds of methods such as landfill, heat treatment and biological treatment, but these three method pair
All there is certain problem in the process in straw.
Along with the development of economic technology, improving constantly of level of agricultural production, utilize stalk agriculture
Industry refuse also field, continue to bring out as the new technique such as fuel, feedstuff, but agricultural wastes is comprehensive
Utilization rate is less than 10%.Therefore, open up a new route, solve crop material and leave unused problem, real
Existing agricultural crop straw the most effectively utilizes and is particularly important.The source of straw is extremely wide and exists
The advantages such as carbon content is high, ash is low, are therefore the desirable feedstock preparing activated carbon.
Activated carbon is a kind of porous carbon materials, have high-specific surface area, highly developed pore structure,
Stable chemical property, has been widely used in industrial adsorption, air cleaning, membrance separation, chemical separating
In field.In early days, the raw material preparing activated carbon both at home and abroad is mainly coal, timber etc..Along with the energy is endangered
Machine and environmental problem become increasingly conspicuous, and utilize agriculture and forestry organic waste material such as straw, rice husk and food industry garbage
If Lentinus Edodes fungus dreg etc. is as raw material, become the emphasis of activated carbon preparation research.
Straw is made the activated carbon idle problem by solution rural area crop material, is also solid waste
Recycling lays the foundation.
Summary of the invention
The technical problem to be solved is to provide a kind of activated carbon processing technology based on straw,
To solve the not energy-conserving and environment-protective caused in prior art, the above-mentioned multinomial defects such as technical difficulty is big.
For achieving the above object, the present invention provides following technical scheme: a kind of activity based on straw
Charcoal processing technology, it is characterised in that: comprise the following steps:
(1) straw pretreatment: by straw cleaning, screening, be dried, pulverize, sieve；
(2) activator is added: mixed with activator by the raw material crushed；
(3) pyrolysis: raw material is placed in carbide furnace with activating mixtures and is pyrolyzed, be pyrolyzed
Cheng Zhongxu utilizes N2Protecting, carbide furnace heating rate is 20 DEG C/min, and pyrolysis time is 60min；
(4) regulation PH: use HCI to be carried out, uses distilled water to carry out product pH value then
Adjusting, final ph should be in the range of 6～7；
(5) clean: product is carried out by ultrasonic cleaner；
(6) dry: cleaning afterproduct and be positioned over drying among baking oven, now oven temperature environment sets
Being set to 110 DEG C, drying time is about 4h；
(7) grind: ground 200 mesh sieves filter, and obtain active carbon powder sample.
Preferably, the dry employing baking oven in described step (1) and temperature are set to 100 DEG C
-110 DEG C, the time is 24h.
Preferably, the straw after drying in described step (1) is placed in 2%NaOH immersion 48h.
Preferably, in described step (2), activator uses the ZnCI of 5mol/L2And 5mol/L
KOH5The activator mixed with 1:1 ratio.
Preferably, in described step (3) pyrolysis temperature at 500 DEG C-800 DEG C.
Preferably, in described step (3), pyrolytic process HCI concentration is 3mol/L, distilled water temperature
It it is 65 DEG C-75 DEG C.
Employing technical scheme provides the benefit that: the straw after drying is placed in 2%NaOH leaching
Bubble 48h, carries out one whereby and cleans and the waxiness on straw surface is carried out a removal straw,
Straw is carried out the process such as activation and is transformed into activated carbon, use ZnCI2And KOH5Ratio system with 1:1
Straw is activated by the activator become, and can strengthen activation efficiency, uses 3mol/L in pyrolytic process
HCI, distilled water temperature controls at 65 DEG C-75 DEG C, and pyrolysis temperature controls at 500 DEG C-800 DEG C permissible
Ensure the yield rate of activated carbon.
Detailed description of the invention
Embodiment 1: a kind of activated carbon processing technology based on straw, it is characterised in that: comprise the following steps:
(1) straw pretreatment: by straw cleaning, screening, be dried, pulverize, sieve；
(2) activator is added: mixed with activator by the raw material crushed；
(3) pyrolysis: raw material is placed in carbide furnace with activating mixtures and is pyrolyzed, need in pyrolytic process
Utilize N2Protecting, carbide furnace heating rate is 20 DEG C/min, and pyrolysis time is 60min；
(4) regulation PH: use the HCI of 3mol/L to be carried out, uses 70 DEG C of distilled water to produce then
Product pH value adjusts, and final ph should be in the range of 6～7；
(5) clean: product is carried out by ultrasonic cleaner；
(6) dry: cleaning afterproduct and be positioned over drying among baking oven, now oven temperature ambient As is
110 DEG C, drying time is about 4h；
(7) grind: ground 200 mesh sieves filter, and obtain active carbon powder sample.
Embodiment 2:
Remaining is same as in Example 1, and difference is the dry employing baking oven in described step (1)
Being dried and temperature is set to 105 DEG C, the time is 24h, and in step (3), pyrolytic process HCI concentration is
3mol/L, distilled water temperature is 72 DEG C.
Embodiment 3:
Remaining is same as in Example 1, and difference is the straw after drying in described step (1)
Being placed in 2%NaOH immersion 48 hours, in step (3), pyrolytic process pyrolysis temperature is set as 650 DEG C.
Based on above-mentioned: the straw after drying is placed in 2%NaOH immersion 48h, whereby straw is carried out one
Individual cleaning and the waxiness to straw surface carry out a removal, straw carries out activation etc. and processes transformation
Viability charcoal, uses ZnCI2And KOH5With the activator that the ratio of 1:1 is made, straw is activated,
Activation efficiency can be strengthened, pyrolytic process uses the HCI of 3mol/L, distilled water temperature control
65 DEG C-75 DEG C, pyrolysis temperature controls to can ensure that the yield rate of activated carbon at 500 DEG C-800 DEG C
Obviously the present invention implements and is not subject to the restrictions described above, as long as have employed the side of the present invention
The improvement of the various unsubstantialities that method design and technical scheme are carried out, or the most improved by the structure of the present invention
Think and technical scheme directly applies to other occasion, all within protection scope of the present invention.
Claims (6)
1. an activated carbon processing technology based on straw, it is characterised in that: comprise the following steps:
(1) straw pretreatment: by straw cleaning, screening, be dried, pulverize, sieve；
(2) activator is added: mixed with activator by the raw material crushed；
(3) pyrolysis: be placed in carbide furnace with activating mixtures by raw material and be pyrolyzed, needs in pyrolytic process to utilize
N2Protecting, carbide furnace heating rate is 20 DEG C/min, and pyrolysis time is 60min；
(4) regulation PH: use HCI to be carried out, uses distilled water to carry out product pH value adjustment then,
Whole pH value should be in the range of 6～7；
(5) clean: product is carried out by ultrasonic cleaner；
(6) dry: cleaning afterproduct and be positioned over drying among baking oven, now oven temperature ambient As is
110 DEG C, drying time is about 4h；
(7) grind: ground 200 mesh sieves filter, and obtain active carbon powder sample.
A kind of activated carbon processing technology based on straw the most according to claim 1, it is characterised in that:
Dry employing baking oven and temperature in described step (1) are set to 100 DEG C-110 DEG C, and the time is 24h.
A kind of activated carbon processing technology based on straw the most according to claim 1, it is characterised in that:
Straw after drying in described step (1) is placed in 2%NaOH immersion 48h.
A kind of activated carbon processing technology based on straw the most according to claim 1, it is characterised in that:
In described step (2), activator uses the ZnCI of 5mol/L2KOH with 5mol/L5With 1:1 ratio
The activator that rate mixes.
A kind of activated carbon processing technology based on straw the most according to claim 1, it is characterised in that:
In described step (3), pyrolysis temperature is at 500 DEG C-800 DEG C.
A kind of activated carbon processing technology based on straw the most according to claim 1, it is characterised in that:
In described step (3), pyrolytic process HCI concentration is 3mol/L, and distilled water temperature is 65 DEG C-75 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594043.6A CN106006640A (en) | 2016-07-26 | 2016-07-26 | Straw-based activated carbon preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594043.6A CN106006640A (en) | 2016-07-26 | 2016-07-26 | Straw-based activated carbon preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106006640A true CN106006640A (en) | 2016-10-12 |
Family
ID=57114351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594043.6A Pending CN106006640A (en) | 2016-07-26 | 2016-07-26 | Straw-based activated carbon preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106006640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002446A (en) * | 2019-01-24 | 2019-07-12 | 华中科技大学 | A kind of method and product preparing active carbon using biomass castoff |
| CN109809403B (en) * | 2019-03-18 | 2022-04-26 | 中国药科大学 | Preparation method and application of biogas residue-based activated carbon with high adsorption performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245776A (en) * | 1999-08-31 | 2000-03-01 | 林天安 | Method for preparing vehicular active carbon by using straw stalks and saw dust |
| CN1868874A (en) * | 2005-06-21 | 2006-11-29 | 贵州大学 | Active carbon using coal grass paste as raw material and its preparation method |
| CN101475165A (en) * | 2008-12-25 | 2009-07-08 | 东华大学 | Method for preparing active carbon from straw stalk |
| CN102515162A (en) * | 2011-11-09 | 2012-06-27 | 上海电力学院 | Biomass activated carbon, preparation method thereof and application thereof in flue gas mercury removal |
-
2016
- 2016-07-26 CN CN201610594043.6A patent/CN106006640A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245776A (en) * | 1999-08-31 | 2000-03-01 | 林天安 | Method for preparing vehicular active carbon by using straw stalks and saw dust |
| CN1868874A (en) * | 2005-06-21 | 2006-11-29 | 贵州大学 | Active carbon using coal grass paste as raw material and its preparation method |
| CN101475165A (en) * | 2008-12-25 | 2009-07-08 | 东华大学 | Method for preparing active carbon from straw stalk |
| CN102515162A (en) * | 2011-11-09 | 2012-06-27 | 上海电力学院 | Biomass activated carbon, preparation method thereof and application thereof in flue gas mercury removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002446A (en) * | 2019-01-24 | 2019-07-12 | 华中科技大学 | A kind of method and product preparing active carbon using biomass castoff |
| CN109809403B (en) * | 2019-03-18 | 2022-04-26 | 中国药科大学 | Preparation method and application of biogas residue-based activated carbon with high adsorption performance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110240386B (en) | Straw and sludge cooperative treatment device and method | |
| CN101890423B (en) | Recycling method for cleaning and processing kitchen waste | |
| CN105837005B (en) | Municipal biological dewatered organic conditioner of excess sludge and preparation method thereof | |
| CN104087326B (en) | A kind of method preparing charcoal for raw material wet method thermal cracking with agricultural organic solid waste | |
| CN108311104A (en) | A kind of charcoal preparation method of synchronous pyrolysis load iron | |
| CN112544572A (en) | Method for environment-friendly feeding of hermetia illucens by using kitchen waste | |
| CN110697707A (en) | Method for preparing high-performance activated carbon organic pollutant adsorbent by using edible fungus residues | |
| CN109174001A (en) | Preparation method of calcium-modified litchi biochar and method for reducing estrone in water by using calcium-modified litchi biochar | |
| CN109530423A (en) | Mixed biologic charcoal and preparation method thereof for heavy-metal contaminated soil reparation | |
| CN111468078A (en) | Reed stem biochar composite material and application thereof in remediation of cadmium-polluted soil | |
| CN113198418B (en) | Method for preparing efficient phosphorus removal activated carbon by using edible fungus residues | |
| CN104261950A (en) | Method for producing organic fertilizer and biochar cultivation medium by using household garbage | |
| CN104030285A (en) | Cattle manure/rape straw activated carbon and preparation method thereof | |
| Hu et al. | Effects of spent mushroom substrate biochar on growth of oyster mushroom (Pleurotus ostreatus) | |
| CN110142026A (en) | The alkali lignin base charcoal efficient absorption material of cadmium, preparation method and applications in adsorbed water body | |
| CN108840748A (en) | Preparation method based on abandoned vinasse, the geobiont organic fertilizer of kitchen garbage | |
| CN106006640A (en) | Straw-based activated carbon preparation process | |
| CN106693890A (en) | Application of biochar adsorbent prepared from rice agricultural byproducts | |
| CN103301811A (en) | preparation method of biomass charcoal adsorbent and method for treating oily wastewater by biomass charcoal adsorbent | |
| CN105237307A (en) | Soil conditioner as well as production method and application thereof | |
| CN102600801B (en) | Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater | |
| CN110373205A (en) | A kind of preparation method of high concentration cobalt, lead contamination soil soil-repairing agent | |
| CN203076324U (en) | Comprehensive treatment device for vegetable waste | |
| CN109609152A (en) | The method of high protein algae and waste plastic pyrolysis gas-solid bipolar mixture dechlorination charcoal processing | |
| CN111718099B (en) | Rural non-point source pollution treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |