CN102786050A - Method for preparing microporous cocoanut active charcoal by pyrolysis and activation - Google Patents
Method for preparing microporous cocoanut active charcoal by pyrolysis and activation Download PDFInfo
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- CN102786050A CN102786050A CN2012102456594A CN201210245659A CN102786050A CN 102786050 A CN102786050 A CN 102786050A CN 2012102456594 A CN2012102456594 A CN 2012102456594A CN 201210245659 A CN201210245659 A CN 201210245659A CN 102786050 A CN102786050 A CN 102786050A
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Abstract
The invention discloses a method for preparing microporous cocoanut active charcoal by pyrolysis and activation, comprising the following steps: putting coconut shells as raw materials into a reactor and enclosing to activate at room temperature, putting the processed reactor into a resistance furnace, heating up to an activation temperature of 700-900 DEG C from the room temperature with a heating rate of 8-15 DEG/min, activating for 1-6h, after the activation finishes, taking out the sample, pickling with 1wt% chlorohydric acid, washing with water to neutral, and drying to obtain the sample. Compared with traditional steam activation method, the method disclosed in the invention has the advantages of clean and simple process, energy saving and consumption reduction, excellent product performance, etc.
Description
Technical field
The invention belongs to the activated carbon technology field, relate to the preparation of gac, be specifically related to the method that a kind of pyrolysis activation prepares the micropore cocoanut active charcoal.
Background technology
Gac is a kind of high-quality carbon material adsorbing material that utilizes biomass organic substance (timber, shell, coal, refinery coke etc.) preparation; Have pore texture prosperity, high adsorption capacity, chemical property stable, be prone to characteristics such as regeneration, be widely used in that food decolouring taste removal, purification of water quality are handled, gas delivery is stored, solution reclaims and make with extra care and numerous areas such as support of the catalyst.The quality of performance of the adsorbent often depends on surface chemistry environment and these two important factors of nanometer adsorption space.The coupling of adsorption molecule and sorbent material aperture size can realize the preferential selective adsorption to molecule.Generally, for reaching preferentially adsorbed, need the aperture structure of gac be changed a certain molecule.Substantially, Gas Phase Adsorption should be master (micropore volume account for total hole volume 70%～90%) with micropore (pore diameter < 2nm) structure, and pore size distribution is concentrated, can reach adsorption equilibrium as early as possible.The microporous type gac has important use at aspects such as gas delivery purifying, natural gas storages; Current the demands for energy amount is increased sharply and situation that the carbonic acid gas problem is serious day by day under; Can solve and stably to supply with the energy, the serious problems of the environment of preserving our planet again.Development and preparation is structurally ordered, the microporous type special-purpose activated charcoal of pore size homogeneous is significant.
Characteristics such as coconut husk has the special organization structure, and degree of compactness is high, and ash content is low, and physical strength is high, and cost is low help the generation of microvoid structure, are the high quality raw material of preparation gac.Generally, adopt steam activation to prepare cocoanut active charcoal, its microvoid structure is flourishing, and specific surface area is high, and is low but this method prepares the yield of gac, power consumption (activation temperature is generally between 900～1100 ℃) height.
Summary of the invention
In order to overcome the deficiency of prior art; The invention provides the method that a kind of pyrolysis activation prepares the micropore cocoanut active charcoal; Do not adding under the airtight situation of any reactive gas or chemical reagent, through the gas self-activation pore-creating that pyrolytic reaction discharges, the superior gac of preparation absorption property.
The coconut husk raw material is put the airtight activation of room temperature in people's reactor drum; Reactor drum after the processing is put people's resistance furnace; Temperature rise rate with 8～15 ℃/min rises to 700～900 ℃ of activation temperatures from room temperature, activation 1～6h, and sample is taken out in end to be activated; Extremely neutral through 1wt% chlorohydric acid pickling, washing, the dry sample that gets.
Preferred activation temperature is 800 ℃, and soak time is 4h.
Method of the present invention is compared with traditional steam activation method, has advantages such as the production technique cleaning is easy, energy-saving and cost-reducing, product performance are good.
Embodiment
Coconut husk is broken, screening are got 0.85～2.O0mm as experimental raw, place the electric heating constant temperature air dry oven, and 120 ℃ of following dry 6h are with subsequent use.
Embodiment 1
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 700 ℃ of activation temperatures with the temperature rise rate of 10 ℃/min, activation 6h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Embodiment 2
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 750 ℃ of activation temperatures with the temperature rise rate of 15 ℃/min, activation 5h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Embodiment 3
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 800 ℃ of activation temperatures with the temperature rise rate of 8 ℃/min, activation 3h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Embodiment 4
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 850 ℃ of activation temperatures with the temperature rise rate of 12 ℃/min, activation 2h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Embodiment 5
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 900 ℃ of activation temperatures with the temperature rise rate of 10 ℃/min, activation 1h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Embodiment 6
100g coconut husk raw material is put in the reactor drum that people's volume is 1000mL airtight activation treatment before reacting.Reactor drum after handling is put people's resistance furnace, begin to heat up from room temperature, rise to 800 ℃ of activation temperatures with the temperature rise rate of 10 ℃/min, activation 4h, sample is taken out in end to be activated, to neutral, is product through 1wt% chlorohydric acid pickling, washing after the drying.
Method of the present invention is compared with traditional steam activation method, has advantages such as the production technique cleaning is easy, energy-saving and cost-reducing, product performance are good.
Claims (3)
1. a pyrolysis activation prepares the method for micropore cocoanut active charcoal, may further comprise the steps:
The coconut husk raw material is put the airtight activation of room temperature in people's reactor drum; Reactor drum after the processing is put people's resistance furnace; Temperature rise rate with 8～15 ℃/min rises to 700～900 ℃ of activation temperatures from room temperature, activation 1～6h, and sample is taken out in end to be activated; Extremely neutral through 1wt% chlorohydric acid pickling, washing, the dry sample that gets.
2. pyrolysis activation according to claim 1 prepares the method for micropore cocoanut active charcoal, it is characterized in that: described activation temperature is 800 ℃.
3. pyrolysis activation according to claim 1 prepares the method for micropore cocoanut active charcoal, it is characterized in that: described soak time is 4h.
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| CN2012102456594A CN102786050A (en) | 2012-07-16 | 2012-07-16 | Method for preparing microporous cocoanut active charcoal by pyrolysis and activation |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554014A (en) * | 2016-11-28 | 2017-04-05 | 鄢平 | A kind of method that self-activation method prepares activated carbon |
| CN106829957A (en) * | 2017-02-15 | 2017-06-13 | 中国林业科学研究院林产化学工业研究所 | A kind of low desorption residual particles method for preparation of active carbon of VOCs high adsorption rates |
| CN108101052A (en) * | 2017-12-12 | 2018-06-01 | 常州蓝旗亚纺织品有限公司 | A kind of preparation method of Chinese torreya activated carbon |
| CN109019595A (en) * | 2018-09-29 | 2018-12-18 | 中国林业科学研究院林产化学工业研究所 | The method that the one step pyrolysis of biomass low pressure prepares high performance active carbon in tube furnace |
| CN110237699A (en) * | 2018-03-07 | 2019-09-17 | 上海驻净电子科技有限公司 | A kind of air cleaning unit |
| CN110433768A (en) * | 2019-04-26 | 2019-11-12 | 福建工程学院 | A kind of preparation method of high-specific surface area cocoanut active charcoal |
| CN110467179A (en) * | 2018-05-09 | 2019-11-19 | 上海核工程研究设计院有限公司 | A method of active carbon is handled with nuclear facilities radioactive liquid waste chemical flocculation |
| CN110498414A (en) * | 2019-09-09 | 2019-11-26 | 武汉轻工大学 | Preparation method, carbon-selenium composite material and the modified glassy carbon electrode of porous carbon materials |
| CN113355096A (en) * | 2021-07-22 | 2021-09-07 | 南京大学 | Application of carbon-based repair material in repairing of antimony-arsenic polluted soil and preparation method |
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| CN1511784A (en) * | 2002-12-28 | 2004-07-14 | 谢仁智 | Process for preparing large and medium pore high performance active carbon |
| CN101397136A (en) * | 2008-11-04 | 2009-04-01 | 昆明理工大学 | Method for preparing high specific surface area granular activated carbon by physical activation process |
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- 2012-07-16 CN CN2012102456594A patent/CN102786050A/en active Pending
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| CN1511784A (en) * | 2002-12-28 | 2004-07-14 | 谢仁智 | Process for preparing large and medium pore high performance active carbon |
| CN101397136A (en) * | 2008-11-04 | 2009-04-01 | 昆明理工大学 | Method for preparing high specific surface area granular activated carbon by physical activation process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554014A (en) * | 2016-11-28 | 2017-04-05 | 鄢平 | A kind of method that self-activation method prepares activated carbon |
| CN106829957A (en) * | 2017-02-15 | 2017-06-13 | 中国林业科学研究院林产化学工业研究所 | A kind of low desorption residual particles method for preparation of active carbon of VOCs high adsorption rates |
| CN106829957B (en) * | 2017-02-15 | 2019-04-16 | 中国林业科学研究院林产化学工业研究所 | A kind of low desorption residual particles method for preparation of active carbon of VOCs high adsorption rate |
| CN108101052A (en) * | 2017-12-12 | 2018-06-01 | 常州蓝旗亚纺织品有限公司 | A kind of preparation method of Chinese torreya activated carbon |
| CN110237699A (en) * | 2018-03-07 | 2019-09-17 | 上海驻净电子科技有限公司 | A kind of air cleaning unit |
| CN110467179A (en) * | 2018-05-09 | 2019-11-19 | 上海核工程研究设计院有限公司 | A method of active carbon is handled with nuclear facilities radioactive liquid waste chemical flocculation |
| CN109019595A (en) * | 2018-09-29 | 2018-12-18 | 中国林业科学研究院林产化学工业研究所 | The method that the one step pyrolysis of biomass low pressure prepares high performance active carbon in tube furnace |
| CN109019595B (en) * | 2018-09-29 | 2021-11-30 | 中国林业科学研究院林产化学工业研究所 | Method for preparing high-performance activated carbon by biomass low-pressure one-step pyrolysis in tubular furnace |
| CN110433768A (en) * | 2019-04-26 | 2019-11-12 | 福建工程学院 | A kind of preparation method of high-specific surface area cocoanut active charcoal |
| CN110498414A (en) * | 2019-09-09 | 2019-11-26 | 武汉轻工大学 | Preparation method, carbon-selenium composite material and the modified glassy carbon electrode of porous carbon materials |
| CN113355096A (en) * | 2021-07-22 | 2021-09-07 | 南京大学 | Application of carbon-based repair material in repairing of antimony-arsenic polluted soil and preparation method |
| CN113355096B (en) * | 2021-07-22 | 2022-04-22 | 南京大学 | Application of carbon-based repair material in repairing of antimony-arsenic polluted soil and preparation method |
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Application publication date: 20121121 |