CN1459414A - Method of preparing active carbon - Google Patents
Method of preparing active carbon Download PDFInfo
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- CN1459414A CN1459414A CN02117819A CN02117819A CN1459414A CN 1459414 A CN1459414 A CN 1459414A CN 02117819 A CN02117819 A CN 02117819A CN 02117819 A CN02117819 A CN 02117819A CN 1459414 A CN1459414 A CN 1459414A
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- gac
- active carbon
- preparation process
- carbon
- charing
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Abstract
A process for preparing activated carbon from the carbon-contained raw materials includes such steps as pretreating, carbonization and activating in presence of activator. At least one of carbonizatino and activating process is conducted under pressure. Carbonization pressure is 0.2-15 MPa, its temp. increase speed is 2-8 deg.C and its lerminating temp. is 400-650 deg.C. Activation pressure is 0.2-10 MPa and its temp. is 650-1000 deg.C. The resultant activated carbon has high yield and relatively good strength, gas separating power and adsorpability.
Description
Technical field
The present invention relates to a kind of preparation process of active carbon.
Background technology
Gac is a kind of very important Industrial products, and purposes is very extensive.At present, the production method of gac mainly contains two kinds of physical activation method and chemical activation methods.Chemical activation method is to use ZnCl
2, chemical agent such as KOH makees activator, the activation carbon containing matter prepares gac under 500-700 ℃, condition of normal pressure, because this method environmental pollution is serious, so seldom adopt in recent years; Physical activation method is contenting carbon material charing under condition of normal pressure, makes activator with water vapor then, and the reaction of water vapor and carbon generation activating chemical is made and produced gac under normal pressure, 700-1000 ℃ hot conditions, and its technological process of production is seen accompanying drawing 1.
Summary of the invention
It is higher to the purpose of this invention is to provide a kind of productive rate, and the product that obtains is in the equal Activated Carbon Production method preferably of intensity, gas separating property and absorption property.
A kind of preparation process of active carbon comprises that charing and the activation step in the presence of activator obtain gac at last to containing the pre-treatment of carbon feedstock, and described charing and reactivation process have at least one to carry out under pressurized conditions.
The pressure range of described carbonization process is 0.2-15Mpa, and its charing heat-up rate is 2-8 ℃, and final temperature is 400-650 ℃.
The pressure range of described reactivation process is 0.2-10Mpa, and its temperature is 650-1000 ℃.
Activated media in the described reactivation process is one or more in water vapour, carbonic acid gas, flue gas or the oxygen, and wherein the ratio of activated media and carbon preferably 1: 4-20.
The described carbon feedstock that contains is in bituminous coal, hard coal, brown coal, timber, the shell one or more.
The gac that utilizes aforesaid method to obtain can be flue gas desulfurization gac, gas sweetening gac, water treatment with gac, solvent recuperation with gac, automobile with gac or gas delivery gac.
Because charing, reactivation process are carried out under pressurized conditions, change reaction mechanism, improved speed of response, physicalies such as gac gas separating property, absorption property and intensity have been improved thereby improve, and improved the gac productive rate, carbonization yield can reach 72%-88%, and the activation yield can reach 30%-50%.
Production process of active carbon of the present invention and conventional physical activation method prepare gac and compare and have following characteristics:
1, activated carbon product adsorptive power and sweetening power have improved 10%-30%.
2, activated carbon product even aperture distribution degree improves, and the gas delivery ability strengthens.
3, gac bulk density, physical strength improve, and prolong work-ing life.
4, the activated carbon product yield has improved 2%-15%.
Main absorption property of gac and physical property with method preparation of the present invention are as shown in table 1.
Table 1: with the activated carbon product performance of the inventive method preparation
The title index
Tetrachloro charcoal adsorptive value (%) 80-110
Yamamoto Methylene Blue ZF (%) 220-300
Iodine number (mg/g) 1050-1200
SO
2Loading capacity (mg/g)＞80
Oxygen nitrogen separation factor 12-30
Specific surface (m
2/ g) 1000-1600
Bulk density (g/L) 450-550
Intensity (%)＞95
From the data of table 1 as can be seen, the activated carbon product with method preparation of the present invention is a kind of top-grade active carbon product that is difficult to produce with the conventional physical activation method.
The invention will be further described below in conjunction with specific embodiment.
Description of drawings
Fig. 1 produces the technological process of production figure of gac for physical activation method.
Embodiment
Embodiment 1:
The mixture of bituminous coal and brown coal is crushed to 2-6mm, warm 650 ℃ eventually of charings under pressurized conditions, charing, charing pressure 1Mpa; Activation then, the activating process condition is 800 ℃ of activation temperatures, and activated media is a water vapor, and the ratio of water vapor and charcoal is 1: 10, activation pressure 6Mpa, the activated carbon product performance of preparation is as follows:
Iodine number (mg/g) 1150-1250
Yamamoto Methylene Blue ZF (mg/g) 260-330
Tetrachloro charcoal (%) 80%-100%
SO
2Loading capacity (mg/g)＞80
Oxygen nitrogen separation factor 12-16
Specific surface (m
2/ g) 1200
Bulk density (g/L) 400-500
Intensity (%) 90-98%
Embodiment 2
With the broken abrasive dust of bituminous coal, it is molded to add the tar stirring extruding, warm 420 ℃ eventually of charings under pressurized conditions then, charing, charing pressure 5Mpa; Activation then, the activating process condition is 900 ℃ of activation temperatures, and activated media is the mixture of water vapor and carbonic acid gas, and the ratio of activated media and charcoal is 1: 12, activation pressure 4Mpa, the activated carbon product performance of preparation is as follows:
Iodine number (mg/g) 1050-1250
Yamamoto Methylene Blue ZF (mg/g) 200-330
Tetrachloro charcoal (%) 80%-100%
Oxygen nitrogen separation factor 14-24
Specific surface (m
2/ g) 1200-1600
Bulk density (g/L) 400-500
Intensity (%) 92-98%
Embodiment 3
Pericarppium arachidis hypogaeae, coconut husk and almond shell are crushed to 4-20mm, warm 550 ℃ eventually of charings under pressurized conditions, charing, charing pressure 13Mpa; Under normal pressure, activate then, 650 ℃ of activation temperatures, activated media is an oxygen, and the ratio of oxygen and charcoal is 1: 8, and the activated carbon product performance of preparation is as follows:
Iodine number (mg/g) 1150-1250
Yamamoto Methylene Blue ZF (mg/g) 200-360
Tetrachloro charcoal (%) 80%-110%
Oxygen nitrogen separation factor 16-25
Specific surface (m
2/ g) 1000-1600
Bulk density (g/L) 400-480
Intensity (%) 94-98%
Embodiment 4
Hard coal is crushed to 2-6mm, under normal pressure, carries out charing, warm 650 ℃ eventually of charings, activation then, the activating process condition is 1000 ℃ of activation temperatures, activated media is a water vapor, the weight ratio of water vapor and charcoal is 1: 18, activation pressure 10Mpa, and the activated carbon product performance of preparation is as follows:
Iodine number (mg/g) 100-1150
Yamamoto Methylene Blue ZF (mg/g) 180-260
Tetrachloro charcoal (%) 60%-110%
Oxygen nitrogen separation factor 8-15
Specific surface (m
2/ g) 1000-1600
Bulk density (g/L) 400-480
Intensity (%) 84-93%
Claims (9)
1, a kind of preparation process of active carbon, comprise that charing and the activation step in the presence of activator obtain gac at last, it is characterized in that to containing the pre-treatment of carbon feedstock: described charing and reactivation process have at least one to carry out under pressurized conditions.
2, a kind of preparation process of active carbon according to claim 1, it is characterized in that: the pressure range of described carbonization process is 0.2-15Mpa.
3, a kind of preparation process of active carbon according to claim 2, it is characterized in that: the final temperature of described carbonization process is 400-650 ℃.
4, a kind of preparation process of active carbon according to claim 1, it is characterized in that: the pressure range of described reactivation process is 0.2-10Mpa.
5, a kind of preparation process of active carbon according to claim 4, it is characterized in that: the temperature of described reactivation process is 650-1000 ℃.
6, according to any one described a kind of preparation process of active carbon among the claim 1-5, it is characterized in that: the activated media in the described reactivation process is one or more in water vapour, carbonic acid gas, flue gas or the oxygen.
7, according to any one described a kind of preparation process of active carbon in the claim 6, it is characterized in that: the ratio of described activated media and carbon is 1: 4-20.
8, according to any one described a kind of preparation process of active carbon among the claim 1-5, it is characterized in that: the described carbon feedstock that contains is in bituminous coal, hard coal, brown coal, timber, the shell one or more.
9, according to any one described a kind of preparation process of active carbon among the claim 1-5, it is characterized in that: the described gac that obtains is flue gas desulfurization gac, gas sweetening gac, water treatment with gac, solvent recuperation with gac, automobile with gac or gas delivery gac.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021178194A CN1178853C (en) | 2002-05-22 | 2002-05-22 | Method of preparing active carbon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021178194A CN1178853C (en) | 2002-05-22 | 2002-05-22 | Method of preparing active carbon |
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| CN1459414A true CN1459414A (en) | 2003-12-03 |
| CN1178853C CN1178853C (en) | 2004-12-08 |
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| CNB021178194A Expired - Fee Related CN1178853C (en) | 2002-05-22 | 2002-05-22 | Method of preparing active carbon |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304285C (en) * | 2004-05-26 | 2007-03-14 | 王浦林 | Process for preparing polyporous charcoal and device therefor |
| CN102442663A (en) * | 2010-10-08 | 2012-05-09 | 宁夏宝塔石化集团有限公司 | Mechanized production process for activated carbon |
| CN102895952A (en) * | 2012-09-27 | 2013-01-30 | 浙江工业大学 | Porous carbon material capable of selectively absorbing gold ions, preparation method and application of porous carbon material |
| CN103130222A (en) * | 2013-03-22 | 2013-06-05 | 华电重工股份有限公司 | Method for preparing activated carbon from semi-coke and device used in same |
| CN103232037A (en) * | 2013-05-09 | 2013-08-07 | 江西碧林实业有限公司 | Process for producing active carbon by using steam physical method |
| CN103466614A (en) * | 2013-08-23 | 2013-12-25 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN104891487A (en) * | 2015-04-30 | 2015-09-09 | 山东大学 | Method for rapidly preparing powdery active coke |
| CN106215872A (en) * | 2016-07-26 | 2016-12-14 | 昆明理工大学 | A kind of method simultaneously removing hydrogen sulfide, cos and Carbon bisulfide |
| CN108014750A (en) * | 2017-12-15 | 2018-05-11 | 神华集团有限责任公司 | A kind of preparation method of coal base desulfurization activated carbon |
| CN112429731A (en) * | 2020-11-26 | 2021-03-02 | 上大新材料(泰州)研究院有限公司 | Active coke for catalyst carrier and preparation method thereof |
-
2002
- 2002-05-22 CN CNB021178194A patent/CN1178853C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304285C (en) * | 2004-05-26 | 2007-03-14 | 王浦林 | Process for preparing polyporous charcoal and device therefor |
| CN102442663A (en) * | 2010-10-08 | 2012-05-09 | 宁夏宝塔石化集团有限公司 | Mechanized production process for activated carbon |
| CN102895952A (en) * | 2012-09-27 | 2013-01-30 | 浙江工业大学 | Porous carbon material capable of selectively absorbing gold ions, preparation method and application of porous carbon material |
| CN102895952B (en) * | 2012-09-27 | 2014-12-17 | 浙江工业大学 | Porous carbon material capable of selectively absorbing gold ions, preparation method and application of porous carbon material |
| CN103130222B (en) * | 2013-03-22 | 2014-10-15 | 华电重工股份有限公司 | Method for preparing activated carbon from semi-coke and device used in same |
| CN103130222A (en) * | 2013-03-22 | 2013-06-05 | 华电重工股份有限公司 | Method for preparing activated carbon from semi-coke and device used in same |
| CN103232037A (en) * | 2013-05-09 | 2013-08-07 | 江西碧林实业有限公司 | Process for producing active carbon by using steam physical method |
| CN103466614A (en) * | 2013-08-23 | 2013-12-25 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN103466614B (en) * | 2013-08-23 | 2015-02-11 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN104891487A (en) * | 2015-04-30 | 2015-09-09 | 山东大学 | Method for rapidly preparing powdery active coke |
| CN106215872A (en) * | 2016-07-26 | 2016-12-14 | 昆明理工大学 | A kind of method simultaneously removing hydrogen sulfide, cos and Carbon bisulfide |
| CN106215872B (en) * | 2016-07-26 | 2019-02-19 | 昆明理工大学 | Method that is a kind of while removing hydrogen sulfide, carbonyl sulfur and carbon disulfide |
| CN108014750A (en) * | 2017-12-15 | 2018-05-11 | 神华集团有限责任公司 | A kind of preparation method of coal base desulfurization activated carbon |
| CN112429731A (en) * | 2020-11-26 | 2021-03-02 | 上大新材料(泰州)研究院有限公司 | Active coke for catalyst carrier and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1178853C (en) | 2004-12-08 |
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