CN104163425A - Production method for semicoke-based active carbon - Google Patents
Production method for semicoke-based active carbon Download PDFInfo
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- CN104163425A CN104163425A CN201410385260.5A CN201410385260A CN104163425A CN 104163425 A CN104163425 A CN 104163425A CN 201410385260 A CN201410385260 A CN 201410385260A CN 104163425 A CN104163425 A CN 104163425A
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Abstract
The invention discloses a production method for semicoke-based active carbon. The production method comprises the following steps: a step I of screening and removing impurities for raw materials; a step II of adding the impurity-removed raw materials into a rotary kiln to carry out water vapor activation; a step III of cooling the activated raw materials; a step IV of removing stones from the cooled raw materials by a stoning machine; a step V of carrying out primary screening onto the stone-removed raw materials to obtain the raw materials with granularity that meets the requirements and the raw materials with granularity that fails to meet the requirements; a step VI of crushing the raw materials with granularity that fails to meet the requirements in the step V until a specified range is reached; and a step VII of packaging all of the raw materials with the granularity that meets the requirements. According to the production method, the process is simple, economical and efficient; and meanwhile, a new way is developed for the comprehensive utilization of the semicoke produced by virtue of medium-low temperature destructive distillation of coals in China.
Description
Technical field
The present invention relates to the technical field of Activated Carbon Production, the production method that particularly a kind of physics rotary kiln is produced blue charcoal matrix activated carbon.
Background technology
Along with the high speed development of whole world science and technology and the reinforcement of environmental consciousness, traditional water treatment and gas processing market constantly increase the demand of gac, entire society has proposed new requirement to the capability and performance of gac, and gac raw materials is also expanded to containing charcoal plant, biology and waste etc. by coconut husk, timber and coal.Blue charcoal derives from the middle low-temperature pyrolysis of coal, there is higher carbon content, relatively coal raw materials have that fixed carbon is high, the advantage such as ash content and volatile matter is low, caking index is low, pore texture is flourishing, low price (being only the 1/7-1/3 of coal raw materials), can direct activation prepare gac.
The method of 201310094930.3 1 kinds of blue charcoal preparing active carbons of patent of invention and institute's using appts mainly disclose volatile matter and have been greater than 5%, the blue charcoal that thermostability is greater than 70%, the method for producing gac with rake activation furnace.The method that this patent provides has following defect: the scope of producing raw material is narrower, and the activation equipment investment of producing is large, and technological operation is difficulty comparatively.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention proposes a kind of production method of blue charcoal matrix activated carbon, solve the scope of producing raw material existing in existing preparation method narrower, the activation equipment investment of producing is large, and technological operation is the technical problem of difficulty comparatively.
Technical scheme: for achieving the above object, the present invention has adopted following technical scheme:
A production method for blue charcoal matrix activated carbon, comprises the following steps that order is carried out:
Step 1, raw material is sieved to removal of impurities;
Step 2, raw material that will be after removal of impurities drop in rotary kiln and carry out steam activation;
Step 3, by activation after raw material carry out cooling;
Step 4, utilize stone remover to carry out de-stone to cooled raw material;
Step 5, the raw material after de-stone is sieved for the first time, obtain the satisfactory raw material of granularity and the undesirable raw material of granularity;
Step 6, the undesirable raw material of granularity in step 5 is crushed to the size range of regulation;
Step 7, the satisfactory raw material of all granularities is packed.
The inventive method step is simple, in process the required investment of equipment used less, and the quality better of the gac of producing.In reactivation process, adopt the activation that gas furnace is blue charcoal that temperature is provided, kiln tail is provided with fume afterheat water vapour generation boiler, by the activation of water vapour and carbonic acid gas etc., prepared the relatively advanced activated carbon pore structure of middle macropore, can be useful in widely in the industries such as printing and dyeing, chemical fibre in sewage disposal.
As preferably, in the present invention, the granularity of raw material is 1cm～2cm.
Further, in the present invention, in step 2, the kiln hood of rotary kiln is provided with producer gas generator, and described producer gas generator carries out heat supply in rotary kiln, and the kiln tail of rotary kiln is provided with remaining hot water steam boiler and provides activator water vapour in rotary kiln.Gas furnace provides necessary activation temperature for blue charcoal activates, and coal gas and air combustion simultaneously produces carbon dioxide, by the common activation of water vapour and carbon dioxide, facilitates blue charcoal to produce unique activated carbon pore structure; The waste heat boiler of kiln tail takes full advantage of flue residue heat, for blue charcoal activation provides enough steam activation agent.
Further, in the present invention, in step 2, setup parameter is as follows: 880 ℃～950 ℃ of activation temperatures, soak time >=6 hour, water vapour pressure >=0.18 MPa.Parameter is arranged in above scope, the best results of activation.
Further, in the present invention, in step 3, by activated material be positioned in barrel slag cooler, carry out cooling.Barrel slag cooler can be in the process of rolling cooling activated material, process of cooling is accelerated.
Further, in the present invention, in step 5, adopt the linear shale shaker of sealing to sieve.Automatically complete screening, select the satisfactory activated carbon granule of granularity.
Beneficial effect:
The present invention utilizes physics rotary kiln to produce gac and has sought active charcoal preparing process a kind of economy, high-end, has prepared the relatively advanced activated carbon pore structure of middle macropore, can be useful in widely in the industries such as printing and dyeing, chemical fibre in sewage disposal.
The inventive method not only can promote the development of China's activated carbon industry; can be the comprehensive utilization that low-temperature pyrolysis in China's coal produces blue charcoal simultaneously and open up new way, low-temperature pyrolysis industry in whole coal is had to positive promoter action at aspects such as economic benefit, environmental protection protection, the industrial structures.
Accompanying drawing explanation
Fig. 1 is the graph of pore diameter distribution with the gac of the inventive method production.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
A production method for blue charcoal matrix activated carbon, comprises the following steps:
Step 1, choose the raw material that granularity is 0.5cm-2cm, preferably the raw material of 1cm-2cm sieves removal of impurities;
Step 2, raw material that will be after removal of impurities drop in rotary kiln and carry out steam activation, the kiln hood of rotary kiln is provided with producer gas generator, described producer gas generator is to rotary kiln heat supply, the kiln tail of rotary kiln is provided with remaining hot water steam boiler and provides activator water vapour to rotary kiln, the parameter of setting reactivation process is as follows: 880 ℃～950 ℃ of activation temperatures, soak time >=6 hour, water vapour pressure >=0.18 MPa;
Step 3, by activation after raw material be positioned in barrel slag cooler, carry out cooling;
Step 4, utilize stone remover to carry out de-stone to cooled raw material;
Step 5, by the raw material after de-stone sealing linear shale shaker on sieve for the first time, obtain the satisfactory raw material of granularity and the undesirable raw material of granularity;
Step 6, the undesirable raw material of granularity in step 5 is crushed to the size range of regulation;
Step 7, the satisfactory raw material of all granularities is packed.
The graph of pore diameter distribution of the gac of producing for the inventive method as shown in Figure 1.In figure, two one, lines represent average pore volume-bore dia curve (being called for short V/r curve), and another is the average pore volume-bore dia of differential curve (being called for short d (V)/r curve).From curve, can find out: it is extensive that the gac that this method is made has pore size distribution, from 5 dusts to 240 dusts; Aperture concentrates on 8.5 dusts and 34 dusts, proves that it not only has a large amount of micropore (aperture < 8 dusts), also has abundant middle macropore, for being widely used in the industries such as printing and dyeing, chemical fibre, provides possible in sewage disposal.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a production method for blue charcoal matrix activated carbon, is characterized in that: comprise the following steps:
Step 1, raw material is sieved to removal of impurities;
Step 2, raw material that will be after removal of impurities drop in rotary kiln and carry out steam activation;
Step 3, by activation after raw material carry out cooling;
Step 4, utilize stone remover to carry out de-stone to cooled raw material;
Step 5, the raw material after de-stone is sieved for the first time, obtain the satisfactory raw material of granularity and the undesirable raw material of granularity;
Step 6, the undesirable raw material of granularity in step 5 is crushed to the size range of regulation;
Step 7, the satisfactory raw material of all granularities is packed.
2. the production method of a kind of blue charcoal matrix activated carbon according to claim 1, is characterized in that: the granularity of raw material is 1cm～2cm.
3. the production method of a kind of blue charcoal matrix activated carbon according to claim 1, it is characterized in that: in step 2, the kiln hood of rotary kiln is provided with producer gas generator, described producer gas generator is to rotary kiln heat supply, and the kiln tail of rotary kiln is provided with remaining hot water steam boiler and provides activator water vapour to rotary kiln.
4. the production method of a kind of blue charcoal matrix activated carbon according to claim 1, is characterized in that: in step 2, setup parameter is as follows: 880 ℃～950 ℃ of activation temperatures, soak time >=6 hour, water vapour pressure >=0.18 MPa.
5. the production method of a kind of blue charcoal matrix activated carbon according to claim 1, is characterized in that: in step 3, by activated material be positioned in barrel slag cooler, carry out cooling.
6. the production method of a kind of blue charcoal matrix activated carbon according to claim 1, is characterized in that: in step 5, adopt the linear shale shaker of sealing to sieve.
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| CN201410385260.5A CN104163425A (en) | 2014-08-06 | 2014-08-06 | Production method for semicoke-based active carbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944424A (en) * | 2015-06-29 | 2015-09-30 | 宁夏宝塔石化科技实业发展有限公司 | Preparation method of activated carbon material with specific area of 2300 m<2>/g |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103395783A (en) * | 2013-07-26 | 2013-11-20 | 武汉钢铁(集团)公司 | Preparation method and preparation equipment of activated carbon |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103395783A (en) * | 2013-07-26 | 2013-11-20 | 武汉钢铁(集团)公司 | Preparation method and preparation equipment of activated carbon |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944424A (en) * | 2015-06-29 | 2015-09-30 | 宁夏宝塔石化科技实业发展有限公司 | Preparation method of activated carbon material with specific area of 2300 m<2>/g |
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Application publication date: 20141126 |