CN101780399A - Method for preparing gas phase absorption activated carbon from pine nut shells - Google Patents
Method for preparing gas phase absorption activated carbon from pine nut shells Download PDFInfo
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- CN101780399A CN101780399A CN 201010139884 CN201010139884A CN101780399A CN 101780399 A CN101780399 A CN 101780399A CN 201010139884 CN201010139884 CN 201010139884 CN 201010139884 A CN201010139884 A CN 201010139884A CN 101780399 A CN101780399 A CN 101780399A
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Abstract
The invention discloses a method for preparing gas phase absorption activated carbon from pine nut shells, and relates to the technical field of preparation of activated carbon. The method of the invention comprises the following steps: (1) selecting; (2) breaking; (3) distilling; (4) drying; (5) soaking raw materials; (6) charring and activating; (7) recovering phosphoric acid; (8) removing metal ions; and (9) drying and breaking. Because the pine nut shells are a good raw material for preparing the gas phase absorption activated carbon and have not only hard texture but also moderate specific gravity, the method of the invention overcomes the defects of a traditional method, can produce the high-quality qualified activated carbon for gas phase absorption, can not pollute the environment, simultaneously can obtain a by-product pine oil, and is a new production process which economic, green and environment-friendly.
Description
Technical field
The present invention relates to the Preparation of Activated Carbon technical field, be specifically related to a kind of method with preparing gas phase absorption activated carbon from pine nut shells.
Background technology
The characteristics of active carbon maximum are to have flourishing pore structure and very big specific area.Be widely used in numerous areas such as chemical industry, food, medicine, environmental protection, metallurgy.China is the big producing country of active carbon, and output is positioned at prostatitis, the world.In the last few years, along with the fast development of house ornamentation and automobile industry, the gas phase absorption activated carbon demand increases sharply, and the problem of its raw materials for production deficiency displays day by day, thereby have the research personage to utilize pineal shell to produce active carbon for raw material, but they mostly continue to use old production technology.Utilize phosphoric acid direct impregnation pineal shell, because pineal shell is hard closely, phosphoric acid is difficult to immerse, so the poor quality of product.Owing to fat content height in the pineal shell, Dark smoke billows in meeting when charcoal activates, and seriously polluted environment simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: providing a kind of is the economy method with preparing gas phase absorption activated carbon from pine nut shells of environmental protection again.
Technical solution of the present invention is: a kind of method with preparing gas phase absorption activated carbon from pine nut shells comprises the steps:
(1), selects: the screening pineal shell;
(2), fragmentation: broken raw material to 2～4mm;
(3), distillation: with steam air-distillation 3～4 hours;
(4), oven dry: will through the raw material stoving of distillation to moisture less than 10%;
(5), raw material dipping: according to raw material and solution quality ratio was 1 ﹕, 2～1 ﹕ 3, with raw material in 70～80 ℃ of phosphoric acid solutions that are immersed in 38～42 Baume degrees 12～16 hours;
(6), carbonization-activation: will flood good raw material 400～550 ℃ of following carbonization-activations 2～3 hours;
(7), reclaim phosphoric acid: the material that carbonization-activation is good, with 60～90 ℃ hot water repeatedly washing material reclaim phosphoric acid, until Baume degrees near zero;
(8), remove metal ion:, up to standard until metal ion with 70～80 ℃ of hot hydrochloric acid solution washing materials;
(9), oven dry is broken: the oven dry material to moisture less than 10%, be crushed to 18～24 orders and be finished product.
Technique effect of the present invention is: because pineal shell is the good raw material of preparation gas phase absorption activated carbon, not only quality is hard, and proportion is moderate, overcome the present invention of conventional method weak point, can produce the qualified active carbon that is used for Gas Phase Adsorption of high-quality, again can be free from environmental pollution, can also obtain the accessory substance pine tar simultaneously, be the new production process of a kind of " economic, green, environmental protection ".
The specific embodiment
Embodiment 1:
A kind of method with preparing gas phase absorption activated carbon from pine nut shells is characterized in that it comprises the steps:
(1), select: the screening pineal shell, pick out the pineal shell that do not go mouldy as raw material;
(2), fragmentation: with the broken raw material to 2 of oppositely rolling roller crusher～4mm;
(3), distillation: acceptable material is put into boiler collect pine tar with steam air-distillation 3～4 hours and with condensing unit;
(4), oven dry: will through the raw material that distillation put into rotary furnace dry to moisture less than 10%;
(5), raw material dipping: according to raw material and solution quality ratio was 1 ﹕, 2～1 ﹕ 3, with raw material in 70～80 ℃ of phosphoric acid solutions that are immersed in 38～42 Baume degrees 12～16 hours;
(6), carbonization-activation: will flood good raw material and put into rotary furnace 400～550 ℃ of following carbonization-activations 2～3 hours;
(7), reclaim phosphoric acid: the material that carbonization-activation is good is put in the recovery pond, with 60～90 ℃ hot water repeatedly washing material reclaim phosphoric acid, until Baume degrees near zero;
(8), remove metal ion: with 70～80 ℃ of hot hydrochloric acid solution washing materials repeatedly, up to standard until metal ion;
(9), oven dry is broken: in horizontal drying oven the oven dry material to moisture less than 10%, be finished product with crusher in crushing to 18～24 orders.
Described step (3) is collected pine tar with condensing unit during with the steam air-distillation.
Embodiment 2:
(1), screening pineal shell;
(2), broken pineal shell to 2～4mm;
(3), with steam distillation pineal shell 3 hours, collection pine tar;
(4), oven dry;
(5), raw material dipping: phosphorylated ligand is set to the solution of 38 Baume degrees, is 1 ﹕ 2 70 ℃ of dipping raw materials 12 hours according to raw material and solution quality ratio;
(6), 450 ℃ of following carbonization-activations 2 hours;
(7), reclaim phosphoric acid;
(8), remove metal ion;
(9), oven dry is broken into product.
Pineal shell active carbon yield: 〉=32.2%, the clearance of PARA FORMALDEHYDE PRILLS(91,95): ﹥ 86.00%, to the clearance of benzene: ﹥ 91.00%, to the adsorbance of carbon tetrachloride: ﹥ 90.00%, methylene blue adsorption value: 175.6ml/g, pine tar yield: 〉=8.2%.
Embodiment 3:
(1), screening pineal shell;
(2), broken pineal shell to 2～4mm;
(3), with steam distillation pineal shell 4 hours, collection pine tar;
(4), oven dry;
(5), raw material dipping: phosphorylated ligand is set to the solution of 40 Baume degrees, is 1 ﹕ 3 80 ℃ of dipping raw materials 16 hours according to raw material and solution quality ratio;
(6), 550 ℃ of following carbonization-activations 3 hours;
(7), reclaim phosphoric acid;
(8), remove metal ion;
(9), oven dry is broken into product.
Pineal shell active carbon yield: 〉=29.00%, the clearance of PARA FORMALDEHYDE PRILLS(91,95): ﹥ 88.00%, to the clearance of benzene: ﹥ 93.00%, to the adsorbance of carbon tetrachloride: ﹥ 105.00%, methylene blue adsorption value: 185.6ml/g, pine tar yield: 〉=9.3%.
When the steam distillation pineal shell does not significantly help greater than 550 ℃, the carbonization-activation time clearance greater than 3 hours PARA FORMALDEHYDE PRILLS(91,95)s, benzene greater than 16 hours, carbonization-activation temperature greater than 4 hours, dip time, the adsorbance of carbon tetrachloride does not obviously improve, but methylene blue adsorption value slightly improves.But when with the steam distillation pineal shell less than 3 hours, dip time less than 12 hours, carbonization-activation temperature less than 400 ℃, the carbonization-activation time, every index all had obvious decline less than 2 hours.
Overcome the deficiency of conventional method preferably with the method for preparing gas phase absorption activated carbon from pine nut shells, can be earlier with steam distillation removal grease wherein, produce many micropores simultaneously, the dipping that helps phosphoric acid, can produce the stronger active carbon of Gas Phase Adsorption ability like this, improve the value of pineal shell.Still does not have at present about these two kinds of technologies in conjunction with the research and development of production pineal shell gas phase absorption activated carbon and the report of progress.With the combine method of producing the pineal shell gas phase absorption activated carbon of steam distillation and phosphoric acid activation method is that old technology is incomparable.It is a kind of production method of environment-friendly type, and it can not only produce the active carbon of high target, and can also obtain addition products such as pine tar, for enterprise creates better benefit.
Claims (2)
1. the method with preparing gas phase absorption activated carbon from pine nut shells is characterized in that it comprises the steps:
(1), selects: the screening pineal shell;
(2), fragmentation: broken raw material to 2～4mm;
(3), distillation: with steam air-distillation 3～4 hours;
(4), oven dry: will through the raw material stoving of distillation to moisture less than 10%;
(5), raw material dipping: according to raw material and solution quality ratio was 1 ﹕, 2～1 ﹕ 3, with raw material in 70～80 ℃ of phosphoric acid solutions that are immersed in 38～42 Baume degrees 12～16 hours;
(6), carbonization-activation: will flood good raw material 400～550 ℃ of following carbonization-activations 2～3 hours;
(7), reclaim phosphoric acid: the material that carbonization-activation is good, with 60～90 ℃ hot water repeatedly washing material reclaim phosphoric acid, until Baume degrees near zero;
(8), remove metal ion:, up to standard until metal ion with 70～80 ℃ of hot hydrochloric acid solution washing materials;
(9), oven dry is broken: the oven dry material to moisture less than 10%, be crushed to 18～24 orders and be finished product.
2. the method for preparing gas phase absorption activated carbon from pine nut shells as claimed in claim 1 is characterized in that, described step (3) is collected pine tar with condensing unit during with the steam air-distillation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010139884 CN101780399A (en) | 2010-04-07 | 2010-04-07 | Method for preparing gas phase absorption activated carbon from pine nut shells |
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| CN 201010139884 CN101780399A (en) | 2010-04-07 | 2010-04-07 | Method for preparing gas phase absorption activated carbon from pine nut shells |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157436A (en) * | 2013-04-02 | 2013-06-19 | 清华大学 | Method for preparing pine nut shell based activated carbon for efficiently adsorbing CO2 |
| CN103480330A (en) * | 2013-09-10 | 2014-01-01 | 华南理工大学 | Biomass-modified adsorbent for adsorbing coking wastewater, and preparation method and application thereof |
| CN103566901A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Pine nut shell gas-phase adsorption active carbon and preparation method thereof |
| CN107473217A (en) * | 2017-09-22 | 2017-12-15 | 广州聚禅现代农业研究院有限公司 | A kind of preparation method and application of sunflower seed shell activated carbon |
| CN109802138A (en) * | 2018-12-29 | 2019-05-24 | 河南新太行电源股份有限公司 | A kind of preparation method and applications of peanut shell porous carbon@graphite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4476169A (en) * | 1981-06-23 | 1984-10-09 | Takeda Chemical Industries, Ltd. | Multilayer glass structure |
| JP2003236372A (en) * | 2002-02-20 | 2003-08-26 | Fuso Unitec Kk | Adsorbent for ammonia gas, method for manufacturing the same, and method for removing ammonia in gas by using the same |
| CN1634761A (en) * | 2003-12-30 | 2005-07-06 | 中国石化上海石油化工股份有限公司 | Process for preparing granular active carbon |
-
2010
- 2010-04-07 CN CN 201010139884 patent/CN101780399A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476169A (en) * | 1981-06-23 | 1984-10-09 | Takeda Chemical Industries, Ltd. | Multilayer glass structure |
| JP2003236372A (en) * | 2002-02-20 | 2003-08-26 | Fuso Unitec Kk | Adsorbent for ammonia gas, method for manufacturing the same, and method for removing ammonia in gas by using the same |
| CN1634761A (en) * | 2003-12-30 | 2005-07-06 | 中国石化上海石油化工股份有限公司 | Process for preparing granular active carbon |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157436A (en) * | 2013-04-02 | 2013-06-19 | 清华大学 | Method for preparing pine nut shell based activated carbon for efficiently adsorbing CO2 |
| CN103157436B (en) * | 2013-04-02 | 2015-08-12 | 清华大学 | Efficient adsorption CO 2the preparation method of pine nut based active carbon |
| CN103480330A (en) * | 2013-09-10 | 2014-01-01 | 华南理工大学 | Biomass-modified adsorbent for adsorbing coking wastewater, and preparation method and application thereof |
| CN103566901A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Pine nut shell gas-phase adsorption active carbon and preparation method thereof |
| CN107473217A (en) * | 2017-09-22 | 2017-12-15 | 广州聚禅现代农业研究院有限公司 | A kind of preparation method and application of sunflower seed shell activated carbon |
| CN109802138A (en) * | 2018-12-29 | 2019-05-24 | 河南新太行电源股份有限公司 | A kind of preparation method and applications of peanut shell porous carbon@graphite |
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Open date: 20100721 |