CN102774832A - Method for preparing active carbon from wheat straws by chemical method - Google Patents
Method for preparing active carbon from wheat straws by chemical method Download PDFInfo
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- CN102774832A CN102774832A CN2012101067921A CN201210106792A CN102774832A CN 102774832 A CN102774832 A CN 102774832A CN 2012101067921 A CN2012101067921 A CN 2012101067921A CN 201210106792 A CN201210106792 A CN 201210106792A CN 102774832 A CN102774832 A CN 102774832A
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Abstract
The invention relates to a method for preparing active carbon from wheat straws by a chemical method. The method comprises the following steps that the wheat straw powder and a chemical are mixed according to a certain proportion, the immersion treatment is carried out for 10 to 30 hours, then, the materials are placed into an activation furnace, the temperature is raised to 500 to 900 DEG C in the anoxic state for pyrolysis, the whole process lasts for 1 to 4 hours, and the temperature rise speed is 5 to 20 DEG C/minute; and activation products are rinsed by distilled water, and the active carbon is obtained after the drying. The methylene blue adsorption value of the active carbon prepared by the method is 1 to 7 mg/0.1g. In the process of adopting the method for preparing the active carbon, no acid waste water or waste gas is discharged. The method belongs to the technical field of agriculture.
Description
Technical field:
The invention belongs to agricultural technology field
Background technology:
China is a large agricultural country, and the annual stalk that produces reaches several hundred million tons
[1], remove the compost that is used in the agriculture prodn, effective generating, material of construction etc., nearly still having every year, 60% stalk is not utilized
[2]These depleted stalks not only cause the waste in large number of biological mass-energy source, also environment have been caused certain pollution simultaneously.Wheat in China's plantation extensively; The a large amount of stalks that produce are because himself heat is low, nutrient contg is low; Be not suitable for as electricity generation material and animal-feed, but its Mierocrystalline cellulose and semicellulose massfraction have reached about 70%, the massfraction of carbon has reached 44.16%
[3], relatively be suitable as the raw material for preparing gac.Utilize straw to prepare gac, not only help reducing of the pollution of discarded straw, can also increase economic benefit, realize turning waste into wealth environment.
Wheat straw prepares the technical Analysis of gac
At present China is used for the wheat straw chemical method and prepares process of active carbon and have: Lu Xincheng etc.
[4]Carried out the preparation and the sign thereof of wheat stalk matrix activated carbon with the phosphoric acid method, the methylene blue adsorption value of the wheat stalk matrix activated carbon for preparing is 225mg/g, iodine sorption value 838mg/g, caramel 120%, specific surface area 1279m
2/ g, pore volume 1.36cm
3/ g, middle porosity 76.6%; Jiang should ladder
[5]Carried out the research of wheat straw with phosphoric acid legal system powdered carbon; Shen Tiehuan etc.
[6]Carried out the development of phosphoric acid method straw gac; Peng Jinhui
[7]Studied microwave exposure and made gac through the wheat straw of burnettize, through microwave exposure 8min, the Socryl Blue BRL decolorizing ability of resultant gac is 170mL/g.Above wheat straw chemical method prepares process of active carbon and has the acid waste gas problem, and processing costs is high, and the Activated Carbon Production environment is poor, and equipment corrosion is serious.
Summary of the invention:
The present invention relates to barley seeding food with after a kind of pharmaceutical chemicals mixes according to a certain percentage, dip treating was put into activation furnace after 10～30 hours, under anoxic condition, was warming up to 500～900 ℃ and carried out pyrolysis, and omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min; Activation products promptly obtain gac after with zero(ppm) water rinsing, drying.The present invention prepares the Socryl Blue BRL adsorptive value of gac at 1～7mg/0.1g; The present invention prepares in the gac process, no acidic waste water, exhaust gas emission.
Embodiment
Patent of the present invention belongs to laboratory small test invention, does not pass through the intermediate industrial test.Therefore, embodiment of the present invention is to carry out the intermediate industrial test, confirms to utilize the wheat straw chemical method to prepare the production line of gac.
Reference
[1] Li Shuxiu etc. the comparison of several kinds of agricultural stalk reutilization technologies [J]. Anhui agronomy circular, 2007,13 (9): 164-165.
[2] Liu's order etc. the quantitative evaluation in Chinese biological mass-energy source and regional distribution [J] thereof. natural resources journal, 2007,22 (1): 9-18.
[3] Han Bin etc. the preparation of rice straw gac and sign thereof [J]. agricultural environment science journal, 2009,28 (4): 828-832.
[4] Lu Xincheng etc. the preparation of wheat stalk matrix activated carbon and sign thereof [J]. Anhui agricultural sciences, 2011,39 (7): 4162-4164,4166
[5] Jiang Yingti. wheat straw is with the research [J] of phosphoric acid legal system powdered carbon. Zhejiang forestry science and technology 2000,20 (6): 31-33
[6] Shen Tiehuan etc. the development [J] of phosphoric acid method straw gac. chemical industry progress, 2001,4,41-42
[7] Peng Jinhui. the microwave exposure wheat straw is made gac [J]. Environmental Pollution and Control, 2000,22 (5): 1-2
Claims (2)
1. one kind is utilized the wheat straw chemical method to prepare process of active carbon: the present invention relates to barley seeding food with after a kind of pharmaceutical chemicals mixes according to a certain percentage; After the dip treating 10～30 hours; Put into activation furnace; Under anoxic condition, be warming up to 500～900 ℃ and carry out pyrolysis, omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min; Activation products promptly obtain gac after with zero(ppm) water rinsing, drying.The present invention prepares the Socryl Blue BRL adsorptive value of gac at 1～7mg/0.1g; The present invention prepares in the gac process, no acidic waste water, exhaust gas emission.
2. according to the said method of claim 1, its gordian technique be with sodium chloride solution with after barley seeding food mixes, dip treating is after 10～30 hours; Put into activation furnace; Under anoxic condition, be warming up to 500～900 ℃ and carry out pyrolysis, omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min; Activation products promptly obtain gac after with zero(ppm) water rinsing, drying, the sodium-chlor reusable edible, and sodium-chlor and barley seeding food blended ratio were pressed solid 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101067921A CN102774832A (en) | 2012-04-13 | 2012-04-13 | Method for preparing active carbon from wheat straws by chemical method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101067921A CN102774832A (en) | 2012-04-13 | 2012-04-13 | Method for preparing active carbon from wheat straws by chemical method |
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| Publication Number | Publication Date |
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| CN102774832A true CN102774832A (en) | 2012-11-14 |
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| CN2012101067921A Pending CN102774832A (en) | 2012-04-13 | 2012-04-13 | Method for preparing active carbon from wheat straws by chemical method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551122A (en) * | 2013-09-25 | 2014-02-05 | 蚌埠德美过滤技术有限公司 | Wheat straw powder modified active carbon adsorbent and preparation method thereof |
| CN104528716A (en) * | 2015-01-08 | 2015-04-22 | 齐鲁工业大学 | Hydrochloric acid steel pickling waste liquor resource application technology |
| CN105502388A (en) * | 2015-12-18 | 2016-04-20 | 齐鲁工业大学 | Method for preparing activated carbon from wheat straw waste residues obtained through xylitol preparation technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137811A (en) * | 1983-12-22 | 1985-07-22 | Toho Rayon Co Ltd | Active carbon fiber for cleaning water |
| CN101332992A (en) * | 2008-07-31 | 2008-12-31 | 福建师范大学 | Method for preparing tung cell-based active carbon by zinc chloride chemical activation method |
| CN102363930A (en) * | 2011-06-07 | 2012-02-29 | 山东轻工业学院 | Method for preparing active carbon during alkali recovery of papermaking black liquor |
-
2012
- 2012-04-13 CN CN2012101067921A patent/CN102774832A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137811A (en) * | 1983-12-22 | 1985-07-22 | Toho Rayon Co Ltd | Active carbon fiber for cleaning water |
| CN101332992A (en) * | 2008-07-31 | 2008-12-31 | 福建师范大学 | Method for preparing tung cell-based active carbon by zinc chloride chemical activation method |
| CN102363930A (en) * | 2011-06-07 | 2012-02-29 | 山东轻工业学院 | Method for preparing active carbon during alkali recovery of papermaking black liquor |
Non-Patent Citations (3)
| Title |
|---|
| 《广西化工》 19871231 刘建成 "氯化钠混合物法制造粉状活性炭" 第14-15页 1-2 , 第03期 * |
| 刘建成: ""氯化钠混合物法制造粉状活性炭"", 《广西化工》 * |
| 杨莉 等: ""花生壳残渣制备活性炭及吸附性能测定"", 《花生学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551122A (en) * | 2013-09-25 | 2014-02-05 | 蚌埠德美过滤技术有限公司 | Wheat straw powder modified active carbon adsorbent and preparation method thereof |
| CN104528716A (en) * | 2015-01-08 | 2015-04-22 | 齐鲁工业大学 | Hydrochloric acid steel pickling waste liquor resource application technology |
| CN105502388A (en) * | 2015-12-18 | 2016-04-20 | 齐鲁工业大学 | Method for preparing activated carbon from wheat straw waste residues obtained through xylitol preparation technology |
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Application publication date: 20121114 |