CN1038246C - Manufacturing powdered activated carbon with microwave radiation method - Google Patents
Manufacturing powdered activated carbon with microwave radiation method Download PDFInfo
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- CN1038246C CN1038246C CN 93114637 CN93114637A CN1038246C CN 1038246 C CN1038246 C CN 1038246C CN 93114637 CN93114637 CN 93114637 CN 93114637 A CN93114637 A CN 93114637A CN 1038246 C CN1038246 C CN 1038246C
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- microwave radiation
- phosphoric acid
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- active carbon
- microwave
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Abstract
The present invention relates to a method for manufacturing powdery active carbon through microwave radiation. The method comprises the steps that wood dust and the phosphoric acid solution are mixed and immersed or the wood dust and the zinc chloride solution are mixed and immersed, and then, the mixture is irradiated by microwave to be washed with acid, dried, crushed and screened into the powdery active carbon. The present invention adopts a heating method from inside to outside, with the advantages of high heat efficiency, low energy consumption and low product cost; the overall process of preheating, drying, carbonization and activation can be completed simultaneously, and the powdery active carbon is high in quality and strong in decolorization ability. The active carbon obtained by the method can be used as sugar as well as medicine, with wide use value.
Description
Manufacturing powdered activated carbon with microwave radiation method belongs to gac and makes the field.Promptly make powdered carbon with microwave radiation forest and industrial chemicals.The forest of indication is that wood chip, industrial chemicals are phosphoric acid and zinc chloride.
Known powdered activated charcoal producing technique, heating are outside from raw material, through considerable time could from table and in heat, form micropore, generally need be through preheating, drying, charing and four classes of activation.Because the time is long, power consumption is high, and the gac cost that obtains is also high.
The present invention be directed to a kind of of the problems referred to above proposition and can finish preheating, drying, charing and activation whole process simultaneously, and the method for the manufacturing powdered carbon energy-conservation, that the operating time is short.
Feature of the present invention is that (heating is from inside to outside, is rapidly heated the superiority that makes full use of carry out microwave radiation heating, can control automatically etc.), wood chip and phosphoric acid hybrid infusion, or wood chip and zinc chloride hybrid infusion, after microwave radiation, carry out pickling, oven dry, pulverizing and screening again, make powdered carbon at last.
Fig. 1 is a process flow sheet of the present invention
Content of the present invention is: wood chip and phosphoric acid solution hybrid infusion or wood chip and chlorine Change the zinc solution hybrid infusion, again with carrying out pickling, oven dry, pulverizing and screening behind the microwave, Obtain powdered activated carbon.
The best-of-breed technology condition:
1. proportioning raw materials: art bits: phosphoric acid solution=100: 200-300 (part)
Wood chip: liquor zinci chloridi=100: 200-300 (part)
2. phosphoric acid solution concentration: 25-81%
Liquor zinci chloridi concentration: 8-65%
3. dipping time: more than 12 hours
4. microwave irradiation time: 5-15 minute
5. microwave frequency 2450 or 915MHZ
Radiation temperature 600-900 ℃
The technico-economical comparison that reaches:
1. the yield 20-40% of gac
2. gac caramel decolorizing ability is greater than 100%, and the Yamamoto Methylene Blue ZF decolorizing ability is greater than 12ml (when proportioning raw materials is wood chip and phosphoric acid solution);
3. gac Yamamoto Methylene Blue ZF decolorizing ability is greater than 16ml (when proportioning raw materials is wood chip and liquor zinci chloridi),
If raw material is wood chip and phosphoric acid in the practice, can be 100 parts of wood chips and 200-300 part concentration that the phosphoric acid solution hybrid infusion of 25-81% is more than 12 hours, wash, dry, pulverize and sieve with carrying out conventional acid after microwave radiation 5-15 minute, the caramel decolorizing ability of the powdered carbon that obtains is greater than 100%, the Yamamoto Methylene Blue ZF decolorizing ability (is pressed Ministry of Forestry of People's Republic of China (PRC) standard greater than 12ml, powdered carbon LY216-79, caramel decolorizing ability are pressed the A standard, below identical).
If raw material is wood chip and zinc chloride, can be 100 parts of wood chips and 200-300 part concentration that the liquor zinci chloridi hybrid infusion of 8-65% is more than 12 hours, after microwave radiation 5-15 minute, carry out conventional pickling, oven dry, pulverizing and screening, the Yamamoto Methylene Blue ZF decolorizing ability of resulting powdered carbon is greater than 16ml.
The microwave frequency that adopts is 2450MHZ or 915MHZ, and the optimum temps during the microwave radiation material is 600-900 ℃, and pick-up rate is 20-40%.
It is strong that resulting powdered carbon has a decolorizing ability, and the characteristics that suitability is wide both can sugared usefulness, and were also pharmaceutically acceptable.
The advantage that is had compared with prior art:
1, the present invention adopts the mode of microwave heating, adds thermal material from inside to outside, thermo-efficiency height, energy consumption low (heat-up time is short)
2, the quality height of product, decolorizing ability is strong,
3, can finish preheating, drying, charing and activatory whole process simultaneously, the operating time is short, and product cost is low.
Embodiment 1,
With 100 parts of wood chips and 250 parts of concentration is 40% phosphoric acid solution hybrid infusion 15 hours, with frequency is the microwave radiation material of 2450MHZ. 600 ℃ of radiation temperatures, radiated time 10 minutes, carry out conventional pickling, oven dry, pulverizing and screening then and obtain powdered carbon, yield is more than 25%, the caramel decolorizing ability is greater than 100%, and the Yamamoto Methylene Blue ZF decolorizing ability is greater than 13ml.
Embodiment 2
It with 100 parts of wood chips and 250 parts of concentration 50% liquor zinci chloridi, hybrid infusion 12 hours, with frequency is the microwave radiation material of 2450MHZ, 800 ℃ of radiation temperatures, 10 minutes time, after carrying out conventional pickling, oven dry, pulverizing and screening then, the gac pick-up rate is 40%, and the Yamamoto Methylene Blue ZF decolorizing ability is greater than 16ml.
Claims (1)
1, a kind of method of manufacturing powdered activated carbon with microwave radiation method with wood chip and phosphoric acid solution hybrid infusion, perhaps with wood chip and liquor zinci chloridi hybrid infusion, heating after overpickling, oven dry are pulverized and screening, obtains powdered carbon, it is characterized in that:
1. proportioning raw materials is 100 parts of wood chips, 200～300 parts of phosphoric acid, and phosphoric acid concentration 25～81%, dipping time is more than 12 hours:
2. the proportioning of wood chip and zinc chloride is 100 parts of wood chips, and zinc chloride is 200～300 parts, zinc oxide concentration 8～65%, and dipping time is more than 12 hours;
3. type of heating is a microwave radiation, microwave frequency 2450MHz, and radiated time 5～15 minutes, the width of cloth are penetrated 600～900 ℃ of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114637 CN1038246C (en) | 1993-11-10 | 1993-11-10 | Manufacturing powdered activated carbon with microwave radiation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114637 CN1038246C (en) | 1993-11-10 | 1993-11-10 | Manufacturing powdered activated carbon with microwave radiation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1102399A CN1102399A (en) | 1995-05-10 |
| CN1038246C true CN1038246C (en) | 1998-05-06 |
Family
ID=4990589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114637 Expired - Fee Related CN1038246C (en) | 1993-11-10 | 1993-11-10 | Manufacturing powdered activated carbon with microwave radiation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038246C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207024B1 (en) | 1999-10-04 | 2001-03-27 | Astaris Llc | Method of preparing phosphorus |
| CN1292985C (en) * | 2005-02-28 | 2007-01-03 | 昆明理工大学 | Method for producing active carbon with high specific surface area |
| CN100384723C (en) * | 2005-09-05 | 2008-04-30 | 昆明理工大学 | Method for utilizing purple stem boneset |
| CN102029169B (en) * | 2009-09-29 | 2014-03-26 | 中国科学院大连化学物理研究所 | Method for preparing loaded transitional metal phosphide catalyst |
| CN103030710B (en) * | 2013-01-05 | 2015-03-18 | 广西大学 | Resource utilization method of camellia oleifera shells |
| CN106994330A (en) * | 2017-04-13 | 2017-08-01 | 田得君 | A kind of preparation method of column-shaped active carbon |
| CN107021484B (en) * | 2017-06-19 | 2019-07-30 | 江苏竹溪活性炭有限公司 | Water purification active carbon |
| CN111484012A (en) * | 2020-05-26 | 2020-08-04 | 王占军 | Method for producing decolored active carbon by using phosphoric acid method |
-
1993
- 1993-11-10 CN CN 93114637 patent/CN1038246C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1102399A (en) | 1995-05-10 |
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