CN101538037A - Method for preparing desulphurizing activated coke - Google Patents
Method for preparing desulphurizing activated coke Download PDFInfo
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- CN101538037A CN101538037A CN200910083045A CN200910083045A CN101538037A CN 101538037 A CN101538037 A CN 101538037A CN 200910083045 A CN200910083045 A CN 200910083045A CN 200910083045 A CN200910083045 A CN 200910083045A CN 101538037 A CN101538037 A CN 101538037A
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Abstract
The invention discloses a method for preparing desulphurizing activated coke. The method for preparing activated coke provided by the invention uses anthracite as initial material to prepare activated coke; activation step is included in the preparation process; the activation step uses steam activation method, the activation temperature is 800 to 850 DEG C, and the time lasts for 30 to 50 minutes. The activated coke obtained by using the method in the invention has great bulk density, good intensity and comparatively good desulphurizing effect, which is a very ideal activated coke product special for desulphurizing. Moreover, the activation coke prepared by using the method in the invention has very high activation yield of product that is greater than 85%, and has great practical value and economic effect.
Description
Technical field
The present invention relates to a kind of method for preparing desulphurizing activated coke.
Background technology
Gac is to begin to form suitability for industrialized production earlier 1900s.Gac obtains widely applying as military protective agent in the World War I, thereby has promoted the formation of gac industrial-scale production.After the World War II, particularly beginning fast-developing nineteen sixties from world economy begins, have abundant pore texture, huge specific surface area, good chemical stability, stronger absorption property and a carbon material adsorbing material of abrasive wear resistance as a kind of, gac begins to be widely used in nearly all the modern industrial sector, and its industrial scale, production technique, raw materials for production have all had very big development.After entering the 1980s, along with people's quality of life improve constantly and countries in the world to the pay attention to day by day of environmental quality and sustainable development, gac also increases year by year in the application in environmental protection and field such as civilian.According to the next statistics of recent two decades, world's gac gross annual output amount was about 380,000 tons in 1988, reached about 500,000 tons in 1994, gross annual output amount in 1998 has reached 700,000 tons, and statistic data in 2007 shows, the gross annual output amount of whole world gac surpasses 900,000 tons, estimates that the rate of growth of the gross annual output amount of gac will remain on 3～5% in considerable time from now on.Impel the major cause that the gac industry constantly develops to have two: 1) the continuous expansion in new activated carbon application field; 2) the interior pay attention to day by day of world wide to environment protection and sustainable development idea.Therefore, can think that be applied as main industry as a kind of with the environmental protection field, the gac industrial expansion is just in the ascendant.
At present, the activation method of the main employing of China's active carbon from coal is a physical activation method, is about to the work in-process material that charing is good and is heated to activation temperature, feeds gas activation agent such as CO again
2, O
2(air), water vapour etc. activate, and finally obtain activated carbon product.Activated coke is as a kind of more special activated carbon product, is mainly used in the environmental protection field such as desulfurization, denitration, removing heavy-metal of flue gas, and its product performance depend primarily on it to SO
2, NO
XAnd the adsorptive power of heavy metal, its specific surface area there is not excessive demand.Present experience, its technological process is slightly different with the preparation gac, mainly is to have any different in the selection of activation temperature and time.Ф 9mm macrobead activated coke is a kind of activated carbon product of flue gas desulfurization special use, and the existing market demand is bigger, and demand growth speed is very fast.This kind activated coke does not need too high absorption property, but intensity, bulk density and desulfurization performance are had higher requirements.
Summary of the invention
The purpose of this invention is to provide a kind of method for preparing desulphurizing activated coke.
The method for preparing activated coke provided by the invention is to be that initial feed prepares activated coke with hard coal; Comprise activation step in the preparation process; Described activation step adopts the steam activation method, and activation temperature is that 800-850 ℃, time are 30-50 minute.
Described method can comprise the steps:
1) the hard coal particle is squeezed into sketching charcoal;
2) sketching charcoal after the ageing is carried out charing and handle, obtain carbonizing production;
3) adopt the steam activation method that carbonizing production is carried out activation treatment, activation temperature is that 800-850 ℃, time are 30-50 minute; Obtain activated coke.
In the step 1), can in described hard coal particle, add coal tar and catalyzer; The quality of hard coal particle, coal tar and catalyzer is comparable to be (65～70): (28～32): (2～3).
Described catalyzer can be alkaline earth salt, as MgO, K
2CO
3Deng.
In the step 1), described hard coal particle grain size can be the 180-325 order.
In the step 1), the described sketching charcoal that is squeezed into can be at 800～1000kgf/cm
2Carry out under the pressure.
Digestion time can be more than 10 hours.
Step 2) in, the finishing temperature that charing is handled can be 600～700 ℃, time and can be 50～90 minutes.
Described hard coal can be the hard coal of Wang Po Coal Production.
Described anthracitic ash oontent can be 5-10% (quality percentage composition), and volatile content can be 6-10% (quality percentage composition).Described anthracitic ash oontent specifically can be 9-10% (quality percentage composition), and volatile content specifically can be 6-7% (quality percentage composition).
The particle diameter of described activated coke can be 10～12mm, specifically can be 9mm.
The activated coke that described method prepares also belongs to protection scope of the present invention.
Described activated coke can be applicable to flue gas desulfurization.
Use the activated coke that method of the present invention prepares, bulk density is big, intensity good, better desulfurization effect, is the burnt product of a kind of very ideal desulfurization special active.Use method of the present invention and prepare activated coke, the yield of activation of product is very high, all greater than 85%.The present invention has great practical value and economic benefit.
Embodiment
Following embodiment is convenient to understand better the present invention, but does not limit the present invention.Experimental technique among the following embodiment if no special instructions, is ordinary method.In following examples, three repetitions, results averaged are all established in test.
The preparation of embodiment 1, activated coke and performance measurement
One, the ature of coal feature of feed coal
The coal sample that the Wang Po colliery provides is carried out coal analysis (ash content and volatile matter, GB/T 212-2001; Caking index, GB/T5447-1997), analytical results sees Table 1.
Table 1 coal sample technical analysis result
From the technical analysis result as can be seen, the ash content of raw material coal sample belongs to low grey feed coal less than 10%, can be used as the production that raw material is used for coal-based activated coke.
Two, the preparation of activated coke
1, with the high pressure pulverizing mill (5MRX4419) with the Wang Po coal dust broken be 180-325 purpose particle.
2, in the particle of step 1, add coal tar and catalyzer (MgO); The mass ratio of coal particle, coal tar and catalyzer is (65～70): (28～32): (2～3).
3, the mixture that step 2 is obtained with kneader (QBH1000B) is at 800～1000kgf/cm
2Pressure under be squeezed into sketching charcoal with mould.
4, the sketching charcoal ageing that step 3 is obtained 12 hours, after the screening, (Ф 1.5 * 16m) carries out charing, and the charing finishing temperature is that 600～700 ℃, time are 50～90min to turn round charring furnace with internal heat type.
5, activate with the product of Slapple activating furnace (Tf336-5) with step 4, activation temperature is that 800-850 ℃, time are 30-50 minute.。
6, the product with step 5 sieves, and packing is made the finished product activated coke of Ф 9mm.
Concrete parameter sees Table 2.
Parameter in the table 2 activated coke preparation process
Three, the performance measurement of activated coke
The determination step of compressive strength is: 30 of the finished product activated coke particles of picked at random rule of surface, its intensity shown when broken of test on SH type digital display type pull and push dynamometer, wherein 50% measure vertical intensity, 50% measures horizontal intensity, get its arithmetical av then as sample's compressive strength, unit is N/cm
2
Saturated Sulfur capacity is pressed MT/T 998-2006 standard detection, and all the other technical indicators all detect by CNS GB/T7702-1997.Quality * 100% of the quality/carbonizing production of yield=activated coke finished product.The results are shown in Table 3.
The performance of table 3 activated coke
The result shows: the yield of activation height of product, all greater than 85%; Bulk density is big; Intensity is good; Better desulfurization effect; It is the burnt product of a kind of very ideal desulfurization special active.
Claims (10)
1, a kind of method for preparing activated coke is to be that initial feed prepares activated coke with hard coal; Comprise activation step in the preparation process; Described activation step adopts the steam activation method, and activation temperature is that 800-850 ℃, time are 30-50 minute.
2, the method for claim 1 is characterized in that: described method comprises the steps:
1) the hard coal particle is squeezed into sketching charcoal;
2) sketching charcoal after the ageing is carried out charing and handle, obtain carbonizing production;
3) adopt the steam activation method that carbonizing production is carried out activation treatment, activation temperature is that 800-850 ℃, time are 30-50 minute; Obtain activated coke.
3, method as claimed in claim 2 is characterized in that: in the step 1), add coal tar and catalyzer in described hard coal particle; The mass ratio of hard coal particle, coal tar and catalyzer is (65～70): (28～32): (2～3); Described catalyzer is an alkaline earth salt.
4, as claim 2 or 3 described methods, it is characterized in that: in the step 1), described hard coal particle grain size is the 180-325 order; In the step 1), the described sketching charcoal that is squeezed into is at 800～1000kgf/cm
2Carry out under the pressure.
5, as arbitrary described method in the claim 2 to 4, it is characterized in that: step 2) in, the finishing temperature that charing is handled is that 600～700 ℃, time are 50～90min.
6, as arbitrary described method in the claim 1 to 5, it is characterized in that: described hard coal is the hard coal of Wang Po Coal Production.
7, as arbitrary described method in the claim 1 to 6, it is characterized in that: described anthracitic ash oontent is 5-10% (a quality percentage composition), and volatile content is 6-10% (a quality percentage composition).
8, as arbitrary described method in the claim 1 to 7, it is characterized in that: the particle diameter of described activated coke is 10～12mm.
9, the activated coke that arbitrary described method prepares in the claim 1 to 8.
10, the application of the described activated coke of claim 9 in flue gas desulfurization.
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| CN2009100830459A CN101538037B (en) | 2009-04-27 | 2009-04-27 | Method for preparing desulphurizing activated coke |
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|---|---|---|---|
| CN2009100830459A CN101538037B (en) | 2009-04-27 | 2009-04-27 | Method for preparing desulphurizing activated coke |
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| CN101538037A true CN101538037A (en) | 2009-09-23 |
| CN101538037B CN101538037B (en) | 2011-07-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745686A (en) * | 2012-07-19 | 2012-10-24 | 大同煤矿集团有限责任公司 | Desulfurization activated coke and method for preparing same |
| CN107539986A (en) * | 2016-06-27 | 2018-01-05 | 中国石油化工股份有限公司 | A kind of activated coke and preparation method thereof |
| WO2021258667A1 (en) * | 2020-06-24 | 2021-12-30 | 中冶南方都市环保工程技术股份有限公司 | Activated coke, preparation method therefor and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408474C (en) * | 2006-08-01 | 2008-08-06 | 长春惠工净化工业有限公司 | Production method of desulfur denitrate dust collecting active coke |
-
2009
- 2009-04-27 CN CN2009100830459A patent/CN101538037B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745686A (en) * | 2012-07-19 | 2012-10-24 | 大同煤矿集团有限责任公司 | Desulfurization activated coke and method for preparing same |
| CN102745686B (en) * | 2012-07-19 | 2014-09-24 | 大同煤矿集团有限责任公司 | Desulfurization activated coke and method for preparing same |
| CN107539986A (en) * | 2016-06-27 | 2018-01-05 | 中国石油化工股份有限公司 | A kind of activated coke and preparation method thereof |
| WO2021258667A1 (en) * | 2020-06-24 | 2021-12-30 | 中冶南方都市环保工程技术股份有限公司 | Activated coke, preparation method therefor and application thereof |
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| Publication number | Publication date |
|---|---|
| CN101538037B (en) | 2011-07-20 |
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