CN1362359A - Mocrowave radiation process of producing active carbon with waste tobacco stalk - Google Patents
Mocrowave radiation process of producing active carbon with waste tobacco stalk Download PDFInfo
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- CN1362359A CN1362359A CN02113270A CN02113270A CN1362359A CN 1362359 A CN1362359 A CN 1362359A CN 02113270 A CN02113270 A CN 02113270A CN 02113270 A CN02113270 A CN 02113270A CN 1362359 A CN1362359 A CN 1362359A
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Abstract
The method for producing active carbon by using microwave to radiate tobacco stalk solid wastes includes the following steps: pulverizing raw material tobacco stalk, mixing and immersing it in zinc chloride aqueous solution, them heating by using microwave radiation, acid cleaning, drying, pulverizing and sieving to obtain the invented active carbon.
Description
(1) technical field: microwave chemical field
(2) background technology: along with expanding economy, China is also increasing to the demand of gac, and the development prospect of gac is boundless.Each waterworks in the whole nation, sewage work, purified water factories, pharmaceutical factory, chemical plant, food factory, Citric Acid Plant, starch factory, solvent factory, vinylon plant, fuel factory, restaurant family etc. all need to finish the technological processs such as filtration, absorption, separation or decolouring of product separately with high grade activated carbon.Although Activated Carbon Production has had the history of last 100 years, but because in traditional process for preparing activated carbon, heating all is the outside from raw material, from outward appearance to inner essence carry out, therefore need through the long process time, the technological process that just can finish preheating-drying-charing-activation four-stage is to form micropore.Production practice for several years shows: traditional Activated Carbon Production mode exists that energy consumption height, labour intensity are big, operational condition is poor, unstable product quality, can't carry out the obstacle that continuous production etc. is difficult to cross over, and " waste water,waste gas and industrial residue " that produces in the traditional mode of production process, cause pollution, cause reality domestic, that the many countries in the South East Asia and the whole world can not found the factory because traditional activated carbon process is seriously polluted environment.Therefore it is imperative to develop efficient, energy-conservation, free of contamination novel absorbent charcoal manufacturing process.
The applicant is in 931146937.2 the patent in the patent No., the method of a kind of " manufacturing powdered activated carbon with microwave radiation method " is disclosed, this method is with wood chip and phosphoric acid or liquor zinci chloridi hybrid infusion, with carrying out pickling, oven dry, pulverizing and screening after the microwave radiation, obtain gac again, this method is raw material with the wood chip, cost of material is higher, add that this raw material is is cost with the deforestation resource, it is not extensive to originate, and amount is little; This method can't be carried out suitability for industrialized production, has limited the popularization of this method.In technological processs such as dipping, pickling, oven dry, used processing condition only are suitable for wood chip.
(3) summary of the invention:
1. goal of the invention: with the tobacco rod solid waste is raw material, used and be different from wood chip, coconut husks etc. are processing condition such as the dipping, pickling, oven dry of raw material, finish with microwave radiation and to give heat, drying, charing, activation four-stage, the main quality index one Yamamoto Methylene Blue ZF decolorizing ability of resulting product gac meets or exceeds country-level standard.
2. Fig. 1 is a process flow sheet of the present invention.The tobacco rod solid waste after crushed, is carried out hybrid infusion with solder(ing)acid as raw material, sends into and carries out carry out microwave radiation heating in the microwave radiation device, obtains activated carbon product again after pickling, oven dry, pulverizing and screening.
Processing condition:
(1) raw material tobacco rod solid waste pulverizing length is 1-15mm;
(2) be that 98% technical grade zinc chloride adds water to be mixed with concentration expressed in percentage by weight be 50% solder(ing)acid with purity;
(3) mass ratio of raw material tobacco rod and solder(ing)acid is 1: 3.5～5 dipping time 8-10 hours during hybrid infusion;
(4) power input of microwave radiation is for adjustable continuously;
(5) adopting percentage concentration is that 36% technical grade concentrated hydrochloric acid adds water and is mixed with 10% aqueous hydrochloric acid and carries out 5～10 hours pickling;
(6) when rinsing was finished, pH value reached 7;
(7) bake out temperature is 100～120 ℃, 5～10 hours time;
(8) material after the oven dry reaches-200 orders through being crushed to granularity;
(9) smoke processing system adopts vacuum suction device, and cleaning apparatus and raw material retrieving arrangement can carry out the adjusting of gas part in the microwave radiation device.
3. compare advantage and the positively effect that has with known technology:
(1) the quality height of activated carbon product, decolorizing ability is strong, and the Yamamoto Methylene Blue ZF decolorizing ability has surpassed country-level product standard;
(2) can will give in the microwave radiation process heat, drying, charing, activation four-stage carry out continuously, the operating time is short, product cost is low;
Advantages such as (3) the microwave radiation power input is adjustable continuously, and it is fast and even to have rate of heating, and energy consumption is low, and the time is short.
(4) Fig. 1 is a process flow sheet of the present invention
(5) specific implementation method:
Embodiment 1; With the tobacco rod solid waste be crushed to behind the 10mm with 50% liquor zinci chloridi by 1: 3.5 mixed dipping 10 hours, the power of packing into is radiation 9min in the microwave radiation device of 850W, taking out the back, to adopt concentration be 10% hydrochloric acid soln pickling 5 hours, again through rinsing, the pH value reaches 7, oven dry is 8 hours in baking oven, and oven temperature is 120 ℃, is crushed to below-200 orders again.Obtaining main quality index-methylenum coeruleum decolorizing ability is the activated carbon product of 17ml/0.1g, (country-level standard is 12ml/0.1g).
Embodiment 2:
Flooded 8 hours by 1: 4 mixed with 50% liquor zinci chloridi after being crushed to the tobacco rod solid waste about 10mm, the power of packing into is radiation 5min in the microwave radiation device of 5kw, taking out the back, to adopt concentration be 10% hydrochloric acid soln pickling 5 hours, again through rinsing, make the pH value reach 7, oven dry is 8 hours in baking oven, and oven temperature is 100 ℃, is crushed to below-200 orders again.Activated carbon product is analyzed, and main quality index-the methylenum coeruleum decolorizing ability is 16ml/0.1g.
Claims (1)
1. microwave radiation tobacco rod solid waste is made the method for powdered carbon, the tobacco rod solid waste after crushed with the liquor zinci chloridi hybrid infusion, send into again and carry out microwave radiation in the microwave radiation device, material after the radiation is through pickling, oven dry, pulverizing and screening, it is characterized in that: used processing condition are as follows:
(1) the pulverizing length of raw material tobacco rod solid waste is 1～15mm;
(2) be that 98% technical grade zinc chloride adds water to be mixed with concentration expressed in percentage by weight be 50% solder(ing)acid with purity;
(3) mass ratio of raw material tobacco rod and solder(ing)acid is 1: 3.5～5 during hybrid infusion;
(4) power input of microwave radiation is for adjustable continuously;
(5) adopting concentration is that 36% technical grade concentrated hydrochloric acid adds water and is mixed with 10% aqueous hydrochloric acid and carries out 5～10 hours pickling;
(6) when rinsing is finished, the pH value reaches 7;
(7) bake out temperature 100-120 ℃, 5～10 hours time;
(8) material after the oven dry reaches-200 orders through being crushed to granularity;
(9) smoke processing system adopts vacuum suction device, and gas part is adjustable in cleaning apparatus and the raw material retrieving arrangement, microwave radiation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021132704A CN1140449C (en) | 2002-01-21 | 2002-01-21 | Mocrowave radiation process of producing active carbon with waste tobacco stalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021132704A CN1140449C (en) | 2002-01-21 | 2002-01-21 | Mocrowave radiation process of producing active carbon with waste tobacco stalk |
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| Publication Number | Publication Date |
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| CN1362359A true CN1362359A (en) | 2002-08-07 |
| CN1140449C CN1140449C (en) | 2004-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021132704A Expired - Fee Related CN1140449C (en) | 2002-01-21 | 2002-01-21 | Mocrowave radiation process of producing active carbon with waste tobacco stalk |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292985C (en) * | 2005-02-28 | 2007-01-03 | 昆明理工大学 | Method for producing active carbon with high specific surface area |
| CN1298624C (en) * | 2005-02-28 | 2007-02-07 | 昆明理工大学 | Method for preparing activated carbon by waste tobacco stalk treated by physical method |
| CN100336721C (en) * | 2005-08-15 | 2007-09-12 | 昆明理工大学 | Super active carbon preparation method |
| CN100384723C (en) * | 2005-09-05 | 2008-04-30 | 昆明理工大学 | Method for utilizing purple stem boneset |
| CN100396607C (en) * | 2006-03-22 | 2008-06-25 | 楚雄烟叶复烤有限责任公司 | Method and device for producing tobacco stalk active carbon |
| WO2014077714A1 (en) | 2012-11-16 | 2014-05-22 | Politechnika Poznańska | Production of activated carbon from tobacco leaves by simultaneous carbonization and self-activation and the activated carbon thus obtained |
| CN109911895A (en) * | 2019-02-25 | 2019-06-21 | 合肥学院 | A kind of preparation method of tobacco-based modified activated carbon |
-
2002
- 2002-01-21 CN CNB021132704A patent/CN1140449C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292985C (en) * | 2005-02-28 | 2007-01-03 | 昆明理工大学 | Method for producing active carbon with high specific surface area |
| CN1298624C (en) * | 2005-02-28 | 2007-02-07 | 昆明理工大学 | Method for preparing activated carbon by waste tobacco stalk treated by physical method |
| CN100336721C (en) * | 2005-08-15 | 2007-09-12 | 昆明理工大学 | Super active carbon preparation method |
| CN100384723C (en) * | 2005-09-05 | 2008-04-30 | 昆明理工大学 | Method for utilizing purple stem boneset |
| CN100396607C (en) * | 2006-03-22 | 2008-06-25 | 楚雄烟叶复烤有限责任公司 | Method and device for producing tobacco stalk active carbon |
| WO2014077714A1 (en) | 2012-11-16 | 2014-05-22 | Politechnika Poznańska | Production of activated carbon from tobacco leaves by simultaneous carbonization and self-activation and the activated carbon thus obtained |
| CN109911895A (en) * | 2019-02-25 | 2019-06-21 | 合肥学院 | A kind of preparation method of tobacco-based modified activated carbon |
| CN109911895B (en) * | 2019-02-25 | 2023-01-31 | 合肥学院 | Preparation method of tobacco-based modified activated carbon |
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|---|---|
| CN1140449C (en) | 2004-03-03 |
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