CN101249960B - Preparation technique of read catkins or silvergrass activated carbon - Google Patents
Preparation technique of read catkins or silvergrass activated carbon Download PDFInfo
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- CN101249960B CN101249960B CN2008100144623A CN200810014462A CN101249960B CN 101249960 B CN101249960 B CN 101249960B CN 2008100144623 A CN2008100144623 A CN 2008100144623A CN 200810014462 A CN200810014462 A CN 200810014462A CN 101249960 B CN101249960 B CN 101249960B
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- reed
- reeds
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- catkins
- silvergrass
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Abstract
The invention provides a process for preparing reeds or amur silvergrass activated carbon, which comprises steps of (1) cutting the reeds or amur silvergrass into segments, then drying, (2) employing one of the following methods to perform preprocessing, wherein one method is that the reeds or the amur silvergrass is completely impregnated in acetic acid solution formulated by acetic acid of 36% and water for 8 hours or 6 hours at normal temperature and then is sucked and filtered out, and the other method is that the reeds or amur silvergrass is impregnated in phosphoric acid solution to rest at normal temperature for 8 hours or 6 hours, (3) placing the preprocessed reeds or amur silvergrass in a muffle furnace or a carbonization furnace for performing carbonization and activation, taking out after being cooled in the furnace, then washing by distilled water to pH value of 6.5-7.0 and drying to finish. The invention employs the chemical method to prepare the reeds or amur silvergrass activated carbon, the process is simple in procedure, high in efficiency and low in cost, and belongs to waste utilization and benefits environmental protection, and the reeds or amur silvergrass activated carbon with large specific surface area and high adsorption capacity can be obtained.
Description
Technical field
The present invention relates to a kind of technology that adopts chemical process to prepare reed catkins or reed gac.
Background technology
The raw material of preparation gac mainly is timber, coal, shell, junked tire etc. at present.China's wood resources lacks, the preparation cost height; Shell distributes and disperses, not easily collecting; With coal, junked tire etc. is raw material, and the preparation process environmental pollution is serious.Therefore, seeking new raw material prepares gac and has very important realistic meaning.
Reed catkins is the colored fringe of reed, and its inflorescence branch is dense, and flower is more and be the fine hair shape; Reed (claiming reed seedling again) is the colored fringe of reed, with the reed catkins similar performance.Reed catkins and reed carbon content are higher, and the processing that often goes out of use, and wide material sources are so be suitable for as the Preparation of Activated Carbon raw material.Also there is not at present relevant process introduction with reed catkins or reed preparation gac.
Summary of the invention
The present invention is directed to the deficiency that existing feedstock production gac exists, provide that a kind of preparation process is easy, speed fast, cost is lower, the reed catkins of better performances or the preparation technology of reed gac.
The preparation technology of reed catkins of the present invention or reed gac may further comprise the steps:
(1) reed catkins or reed are cut into fragment, oven dry;
(2) adopt one of following two kinds of methods to carry out pre-treatment:
The one, reed catkins or reed are completely infused at normal temperatures by in the acetic acid solution of the ratio preparation of 36% acetate and water 4: 6 by volume or 6: 48 hours or 6 hours, again its suction filtration is gone out;
The 2nd, it is in 30% or 40% the phosphoric acid solution that reed catkins or reed be impregnated in concentration in the ratio with pure phosphoric acid solid-liquid mass ratio 1: 2.0 or 1: 2.4, leaves standstill under the normal temperature 8 hours or 6 hours;
(3) pretreated reed catkins or reed are placed charring furnace or retort furnace, carried out carbonization-activation 60 minutes-80 minutes, stop heating at 350 ℃-420 ℃, behind the stove internal cooling, take out, be washed with distilled water to pH value 6.5-7.0 then, oven dry can make reed catkins or reed gac.
The present invention adopts chemical method to prepare reed catkins or reed gac, and preparation process is simple, the efficient height, and cost is lower, and belongs to utilization of waste material, is beneficial to environment protection, can obtain specific surface area is big, loading capacity is high reed catkins or reed gac.
Embodiment
Embodiment 1
Reed catkins or reed are cut the fragment of growing into 1cm-2cm, after 120 ℃ of oven dry, be fully immersed in the acetic acid solution of preparing by 36% acetate and 4: 6 by volume ratio of water 8 hours.Behind the suction filtration, be placed on temperature programming in charring furnace or the retort furnace,, stewingly in stove behind the powered-down take out after 2 hours in 380 ℃ of carbonization-activations 70 minutes.Be washed with distilled water to the pH value and be 6.5-7.0, oven dry can make reed catkins or reed gac.
Embodiment 2
Reed catkins or reed are cut the fragment of growing into 1cm-2cm, after 120 ℃ of oven dry, be completely infused in the acetic acid solution of preparing by 36% acetate and 6: 4 by volume ratio of water 6 hours.Behind the suction filtration, be placed on charring furnace or retort furnace temperature programming,, stewingly in stove behind the powered-down take out after 2 hours in 350 ℃ of carbonization-activations 80 minutes.Be washed with distilled water to the pH value and be 6.5-7.0, oven dry can make reed catkins or reed gac.
Embodiment 3
Reed catkins or reed are cut the fragment of growing into 1cm-2cm, after 120 ℃ of oven dry, impregnated in the phosphoric acid solution of concentration 30% in 1: 2.0 the ratio of solid-liquid mass ratio with pure phosphoric acid, normal temperature flooded 8 hours down.Place charring furnace or retort furnace temperature programming,, stewingly in stove behind the powered-down take out after 2 hours in 360 ℃ of carbonization-activations 80 minutes.Be washed with distilled water to the pH value and be 6.5-7.0, oven dry can make reed catkins or reed gac.
Embodiment 4
Reed catkins or reed are cut the fragment of growing into 1cm-2cm, after 120 ℃ of oven dry, impregnated in the phosphoric acid solution of concentration 40% in 1: 2.4 the ratio of solid-liquid mass ratio with pure phosphoric acid, normal temperature flooded 6 hours down.Place charring furnace or retort furnace temperature programming,, stewingly in stove behind the powered-down take out after 2 hours in 420 ℃ of carbonization-activations 60 minutes.Be washed with distilled water to the pH value and be 6.5-7.0, oven dry can make reed catkins or reed gac.
Claims (1)
1. the preparation technology of a reed catkins or reed gac is characterized in that, may further comprise the steps:
(1) reed catkins or reed are cut into fragment, oven dry;
(2) adopt following method to carry out pre-treatment: reed catkins or reed to be completely infused at normal temperatures in the acetic acid solution of preparing by the ratio of 36% acetate and water 4: 6 by volume or 6: 48 hours or 6 hours, again its suction filtration to be gone out;
(3) pretreated reed catkins or reed are placed charring furnace or retort furnace, carried out carbonization-activation 60 minutes-80 minutes, stop heating at 350 ℃-420 ℃, behind the stove internal cooling, take out, be washed with distilled water to pH value 6.5-7.0 then, oven dry can make reed catkins or reed gac.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100144623A CN101249960B (en) | 2008-03-11 | 2008-03-11 | Preparation technique of read catkins or silvergrass activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100144623A CN101249960B (en) | 2008-03-11 | 2008-03-11 | Preparation technique of read catkins or silvergrass activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101249960A CN101249960A (en) | 2008-08-27 |
| CN101249960B true CN101249960B (en) | 2010-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100144623A Expired - Fee Related CN101249960B (en) | 2008-03-11 | 2008-03-11 | Preparation technique of read catkins or silvergrass activated carbon |
Country Status (1)
| Country | Link |
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| CN (1) | CN101249960B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643207B (en) * | 2009-09-04 | 2011-06-01 | 江苏科技大学 | Method for preparing active carbon based on mulberry branch |
| CN103420371A (en) * | 2013-08-06 | 2013-12-04 | 山东大学 | Technological method for preparing reed activated carbon from potassium silicate as activator |
| CN103991872B (en) * | 2014-05-09 | 2015-11-25 | 山东大学 | The method of a kind of Organic Alcohol/sour low-temperature growth height oxygen-containing functional group gac |
| CN106241797A (en) * | 2016-07-29 | 2016-12-21 | 句容市百诚活性炭有限公司 | A kind of preparation method of phragmites communis matrix activated carbon |
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2008
- 2008-03-11 CN CN2008100144623A patent/CN101249960B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101249960A (en) | 2008-08-27 |
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