CN105148843A - Active carbon granule, preparing method thereof and carbon tank - Google Patents
Active carbon granule, preparing method thereof and carbon tank Download PDFInfo
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Abstract
The invention discloses an active carbon granule, a preparing method thereof and a carbon tank. The preparing method of the active carbon granule includes the following steps that 1, 10wt% to 89.8wt% of active carbon powder, 0.1wt% to 15wt% of benzene-ring-containing organic high-molecular compounds, 0.1wt% to 15wt% of inorganic binders and 3wt% to 60wt% of water are evenly mixed and kneaded for 0.1 h to 2 h at the temperature of 25 DEG C to 200 DEG C to obtain active carbon paste; 2, the active carbon paste obtained in the step 1 is extruded into granular active carbon paste at the indoor temperature; 3, the granular active carbon paste obtained in the step 2 are dried for 0.5 h to 2 h at the temperature of 50 DEG C to 110 DEG C; 4, the dried granular active carbon obtained in the step 3 is heated to 250 DEG C to 800 DEG C at the indoor temperature under the protection of inert gas, the temperature is preserved for 0.1 h to 20 h, and the active carbon granule serving as a final product is obtained. According to the preparing method for the active carbon granule, when adsorbing gasoline vapor, the prepared active carbon granule is large in work capacity and high in strength, and the gasoline vapor adsorption speed and the gasoline vapor desorption speed are both high.
Description
[technical field]
The present invention relates to the preparation method of activated carbon granule, particularly relate to a kind of activated carbon granule for gasoline vapor adsorption recovery and preparation method thereof and canister.
[background technology]
The light-end products high volatilities such as gasoline, also exist comparatively serious Loss of Oil Evaporation problem in storage, transport and use procedure.Loss in oil storage and transportation process is generally 1 ‰-4 ‰ of its processing capacity, and both wasted valuable petroleum resources, again reduce oil quality, the oil gas of loss can promote again the formation of photochemical fog to have a strong impact on atmospheric environment.
The excellent adsorbent of utility carries out selective absorption to oil gas, and the absorption realizing product vapour is reclaimed, and is a kind of effective Investigation of Petroleum Vapor Recovery Technology, and choosing of adsorbent is the key of technique.Active carbon is a kind of hydrophobic adsorbent, has nonpolar surface texture, and the absorption being particularly suitable for carrying out oil gas from gas or liquid mixture is reclaimed.
For preventing gasoline volatilization from wasting fuel and contaminated environment, Europe and the U.S. just make laws as far back as 20 century 70s and require that the canister installing filling active carbon on automobile adsorbs gasoline vapor.China starts these research and development on the one hand from the eighties in 20th century and equipment is introduced, and has formulated the Air Pollutant Emission of national standard to oil and product oil storage, fortune, merchandising business and gas station in 2006 and strictly limit.Along with country is to the progressively attention of environmental protection and energy-saving and emission-reduction, petroleum vapor recovery active carbon will obtain tremendous expansion.Active carbon for the gasoline vapors recovery is generally seated in canister, is arranged on automobile.The operation principle of canister is: when automobile engine quits work, the gasoline vapor volatilized by carburetor, cylinder etc. by canister, by the charcoal absorption in canister.During engine operation, by the air desorption that the gasoline vapor companion of adsorbing is inhaled into, and together enter cylinder combustion, thus reach the object preventing gasoline from evaporating waste.Canister active carbon used is the key controlling gasoline evaporation, and not only absorption property is good to require it, and has good desorption performance.
In the patent of the preparation method of the existing pressed active carbon special about petroleum vapor recovery and document, disclosed preparation method is how extruded or broken shaping by high strength, and raw material sources are limited on the one hand, and it is large to produce power consumption, and cost is high.The intensity of the pressed active carbon prepared on the other hand is low, granulated carbon out-of-shape, may there is the problem that bulk density is too high, back pressure is large in actual use.And the adsorption and desorption speed of active carbon to gasoline vapor that existing most of preparation method obtains is all slower.
[summary of the invention]
Technical problem to be solved by this invention is: make up above-mentioned the deficiencies in the prior art, a kind of preparation method of activated carbon granule is proposed, displacement volume during the activated carbon granule absorbing gasoline steam obtained is large, and intensity is high, all very fast to the adsorption and desorption speed of gasoline vapor.
Technical problem of the present invention is solved by following technical scheme:
A kind of preparation method of activated carbon granule, comprise the following steps: 1) water containing the organic high molecular compound of phenyl ring, the inorganic binder of 0.1 ~ 15wt.% and 3 ~ 60wt.% of the absorbent charcoal powder body of 10 ~ 89.8wt.%, 0.1 ~ 15wt.% is mixed, at 25 ~ 200 DEG C, mediate 0.1 ~ 2h obtain active charcoal sludge; 2) by step 1) active charcoal sludge that obtains at room temperature is extruded into granular active charcoal sludge; 3) by step 2) the granular active charcoal sludge that obtains dry 0.5 ~ 2h at 50 ~ 110 DEG C; 4) by step 3) the dried granular active carbon that obtains is under the protection of inert gas, and be at room temperature heated to 250 ~ 800 DEG C, insulation 0.1 ~ 20h, obtains end product activated carbon granule.
A kind of activated carbon granule obtained according to above-mentioned preparation method, described activated carbon granule has the composite bore diameter structure of micropore-mesopore-macropore, in composite bore diameter structure, micropore is the hole that aperture is less than 2nm, and mesoporous is the hole of aperture between 2nm ~ 50nm, and macropore is the hole that aperture is greater than 50nm; And aperture accounts for the mark of total pore volume 20% ~ 50% at the pore volume in the hole of 2-~ 5nm.
For a canister for absorbing gasoline steam, the active carbon loaded in described canister is activated carbon granule as above.
The beneficial effect that the present invention is compared with the prior art is:
The preparation method of activated carbon granule of the present invention, adopts step 1 in preparation method) batch mixing kneading process, auxiliary with step 2) extrude, and by step 3) dry and step 4) activated carbon granule obtained shaping after heat hot process.Obtained activated carbon granule, through experimental verification, have the composite bore diameter structure of micropore-mesopore-macropore, and aperture accounts for the mark of total pore volume 20% ~ 50% at the pore volume in the hole of 2 ~ 5nm.There is high pore volume mark and the composite bore diameter distribution in this 2-~ 5nm hole, through test further, during its work, intensity is high, scope (higher than 95% of prior art) 95% ~ 99%, life-span is long, and normal butane displacement volume is at 8.5 ~ 13g/100g (5 ~ 8g/100g higher than prior art).And there is the composite bore diameter structure of micropore-mesopore-macropore, micropore can improve the absorption affinity of activated carbon granule, the mesoporous adsorbance that can improve activated carbon granule, macropore provides express passway for absorption, can accelerate the adsorption desorption speed of oil gas while making activated carbon granule have large adsorption capacity.Preparation method of the present invention, operation is simple, the low and highly energy-consuming of the yield rate not needing general high voltage extruder grain method to cause.Powdered activated carbon is adopted to be raw material during preparation, be the preparation method of raw material compared to employing wood chip, hard fruit shell or coal in the past, powdered activated carbon has the problems such as the granule strength reduction without the need to causing through carbonization and activation step, and powdered activated carbon wide material sources, advantage of lower cost.And only relating to the operations such as batch mixing is mediated, extruded, drying, heat treatment, production cost is also lower.
[accompanying drawing explanation]
Fig. 1 is the pattern picture of the activated carbon granule that the embodiment 1 of the specific embodiment of the invention obtains;
Fig. 2 is the graph of pore diameter distribution of the activated carbon granule that the embodiment 1 of the specific embodiment of the invention obtains.
[detailed description of the invention]
Contrast accompanying drawing below in conjunction with detailed description of the invention the present invention is described in further details.
Find after deliberation, charcoal absorption oil gas is mainly the nonpolar physical adsorption process that Van der Waals force causes, the physical arrangement relating to parameters such as specific area, pore volume, pore-size distribution of adsorption capacity and active carbon, the aperture size of hydrocarbon molecules diameter and active carbon is more close, and adsorption capacity is stronger.Active carbon specific area is higher, and adsorption capacity is stronger.For pore volume, desirable pore diameter range is micropore higher limit to the scope between mesoporous lower limit, i.e. 2 ~ 5nm, and therefore the pore diameter range mark that accounts for total pore volume at the pore volume in the hole of 2 ~ 5nm is higher, and adsorption capacity is stronger.In addition, during pore-size distribution, such as, as being single aperture structure, single micropore, or single mesoporous, then or single macropore, adsorption effect is all undesirable.As the aperture structure for compound, micropore can improve the absorption affinity of activated carbon granule, the mesoporous adsorbance that can improve activated carbon granule, and macropore provides express passway for adsorbing, while making activated carbon granule have large adsorption capacity, there is quick adsorption desorption performance, contribute to promoting adsorption effect.
The preparation method of the activated carbon granule of this detailed description of the invention, comprises the following steps:
1) water containing the organic high molecular compound of phenyl ring, the inorganic binder of 0.1 ~ 15wt.% and 3 ~ 60wt.% of the absorbent charcoal powder body of 10 ~ 89.8wt.%, 0.1 ~ 15wt.% is mixed, at 25 ~ 200 DEG C, mediate 0.1 ~ 2h obtain active charcoal sludge.
Wherein, inorganic binder can be one or more mixture of clay, sodium metasilicate, sodium metaaluminate, Ludox, Alumina gel, aluminium hydroxide, boehmite, aluminum phosphate, phosphoric acid hydrogen two aluminium, magnesia, calcium oxide, barium monoxide, sodium oxide molybdena, sodium chloride, magnesium chloride, calcium chloride.Through subsequent experimental checking, when the mixture be made up of silica gel, magnesia and aluminium dihydrogen phosphate three selected by inorganic binder, effect is more excellent.
Organic high molecular compound containing phenyl ring can be one or more mixture of pitch, coal tar, softex kw, neopelex, sodium carboxymethylcellulose, starch, phenolic resins, arabia gum, paraffin.Through subsequent experimental checking, when organic high molecular compound selects pitch, coal tar or carboxymethyl cellulose, effect is more excellent.
In this step, the raw material selection absorbent charcoal powder body of preparation, organic high molecular compound, inorganic binder and water containing phenyl ring four kinds of components.Wherein, containing the organic high molecular compound of phenyl ring except playing the effect of organic binder bond, also with inorganic binder compound, promote each other.Relative to selecting separately inorganic binder or selected organic binder bond separately in the past, when comprising organic high molecular compound and inorganic binder simultaneously, organic high molecular compound and inorganic binder, except as binding agent carbon dust being bonded to the activated carbon granule of some strength, also playing and increase the plastic effect of consequent activities charcoal mud.And in preparation process, inorganic binder and organic high molecular compound interact, and can promote the intensity of activated carbon granule.And select the organic high molecular compound containing phenyl ring, in follow-up heat treatment, easier dehydrogenation generates the material buildup formation porous activated carbon of class graphite flake structure, not easily cause plug-hole, adopt this type of organic polymer to be more conducive to obtaining the composite pore structural active carbon of micropore-mesopore-macropore as organic binder bond.
2) by step 1) active charcoal sludge that obtains at room temperature is extruded into granular active charcoal sludge.
This step, extruding pelletization, is follow-up formation particle and prepares.The graininess shape extruded can form according to the requirement of preparation the shape needed, such as spherical, cylindric etc.Preferably, planform is columned grain shape.When extruding in time cylindric, follow-up obtained pressed active carbon particle is cylindric, then cylindric for other shapes, when cylindrical pellet is piled up, can more gap be formed, namely be conducive to reducing back pressure, then when being positioned in activated carbon canister, contribute to air to circulate from gap, contribute to the effect promoting adsorption and desorption gasoline.Preferably, columned round diameter is 1 ~ 10mm, and length is 1 ~ 50mm.Columned diameter and length less, be more conducive to gasoline adsorption, but back pressure can raise.Empirical tests, when being arranged in above-mentioned scope, the bulk density of activated carbon granule is 0.027 ~ 0.035Kg/L, and namely back pressure is lower.By the cylindrical activated carbon mud extruded through rotating pelletizing, the spheric active carbon mud of different-diameter can be prepared into, improve the bulk density of activated carbon granule further.
3) by step 2) the granular active charcoal sludge that obtains dry 0.5 ~ 2h at 50 ~ 110 DEG C.
4) by step 3) the dried granular active carbon that obtains is under the protection of inert gas, and be at room temperature heated to 250 ~ 800 DEG C, insulation 0.1 ~ 20h, obtains end product activated carbon granule.
Heat after above-mentioned drying, activated carbon granule is activated, organic high molecular compound carbonated transition is wherein active carbon, thus the active carbon component content of activated carbon granule is higher.At inert gas, such as N
2protection under, be conducive to suppressing the decomposition of carbon, guarantee active carbon composition.
Preferably, step heating during heating, that is, at room temperature first with the first heating rate to 180 ~ 250 DEG C, insulation 0.1-2h; Then with the second heating rate to 250 ~ 800 DEG C, insulation 0.1 ~ 20h; Wherein, described first rate of heat addition is less than described second rate of heat addition, and described first rate of heat addition and described second rate of heat addition are in the scope of 0.1 ~ 10 DEG C/min.This step heating, relative to heated in one step, the first heating process of two step heating contributes to organic high molecular compound carbonization, and the compound between organic high molecular compound and inorganic binder.Second step heating process, with faster rate heating, energy consumption can be saved on the one hand, more importantly, contribute to the activation of organic high molecular compound and the sintering of inorganic binder, thus be more conducive to the strength enhancing of follow-up obtained activated carbon granule and form composite pore structural.
Through above-mentioned steps, i.e. obtained activated carbon granule.Obtained activated carbon granule has the composite bore diameter structure of micropore-mesopore-macropore, and in composite bore diameter structure, micropore is the hole that aperture is less than 2nm, and mesoporous is the hole of aperture between 2nm ~ 50nm, and macropore is the hole that aperture is greater than 50nm; And aperture accounts for the mark of total pore volume 20% ~ 50% at the pore volume in the hole of 2 ~ 5nm.Have the high pore volume mark in this 2 ~ 5nm hole and the activated carbon granule of composite bore diameter distribution, during its work, intensity is high, and the life-span is long, and displacement volume is large, thus has higher adsorption capacity.
This detailed description of the invention also provides a kind of canister for absorbing gasoline steam, and the active carbon loaded in canister is the activated carbon granule of said structure feature.
Following by arranging multiple embodiment, carry out the aperture structure, specific area, pore volume feature etc. of the gasoline recovery special-purpose activated charcoal particle prepared in this detailed description of the invention of experimental verification, and the performance parameter such as displacement volume during its work and intensity.
Embodiment 1:
Take 300g Ludox+40g aluminium dihydrogen phosphate (i.e. 340g inorganic binder, with 100g carboxymethyl cellulose, namely CMC (organic high molecular compound containing phenyl ring) is dissolved in 1600g deionized water and configures mixed solution, add hydrochloric acid and regulate final solution pH=9, then strong stirring 1h obtains the binding agent of Organic-inorganic composite at ambient temperature.Be 1800m by binding agent and 1000g specific area
2the activated carbon powder Homogeneous phase mixing of/g, extrude after then at room temperature mediating 30min and be prepared into the cylindrical activated carbon mud particle that round diameter is 2mm, length is 4mm, active charcoal sludge particle is dry 2h at 100 DEG C, then at N
2be heated to 250 DEG C of heat treatment 1h from room temperature under protective condition, obtain the activated carbon granule A1 that can be used for the gasoline vapors recovery.
Embodiment 2: the composition and the mass fraction that are inorganic binder relative to the difference of embodiment 1, form inorganic binder by silica gel, magnesia and aluminium dihydrogen phosphate three kinds of materials, and mass fraction changes into 12.33% (in embodiment 1, the mass fraction of inorganic binder is 11.18%).
In the present embodiment, take 300g Ludox+40 magnesia+40g aluminium dihydrogen phosphate, namely amount to 380g inorganic binder.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A2.
Embodiment 3: be inorganic binder relative to the difference of embodiment 1, only by Ludox as inorganic binder.
In the present embodiment, take 340g Ludox as inorganic binder.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A3.
Embodiment 4: be relative to the difference of embodiment 1, the mass fraction of inorganic binder.
In the present embodiment, the 40g aluminium dihydrogen phosphate in embodiment 1 is changed into 10g aluminium dihydrogen phosphate, thus the mass fraction of inorganic binder is 10.3% (in embodiment 1, the mass fraction of inorganic binder is 11.18%).Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A4.
Embodiment 5: be relative to the difference of embodiment 1, the mass fraction of inorganic binder.
In the present embodiment, the 40g aluminium dihydrogen phosphate in embodiment 1 is changed into 80g aluminium dihydrogen phosphate, thus the mass fraction of inorganic binder is 12.3% (in embodiment 1, the mass fraction of inorganic binder is 11.18%).Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A5.
Embodiment 6: be relative to the difference of embodiment 1, containing the kind of the organic high molecular compound of phenyl ring.
Organic high molecular compound containing phenyl ring in the present embodiment selects coal tar, but not CMC.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A6.
Embodiment 7: be relative to the difference of embodiment 1, containing the kind of the organic high molecular compound of phenyl ring.
Organic high molecular compound containing phenyl ring in the present embodiment selects mesophase pitch, but not CMC.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A7.
Embodiment 8: be relative to the difference of embodiment 1, containing the kind of the organic high molecular compound of phenyl ring.
Organic high molecular compound containing phenyl ring in the present embodiment selects phenolic resins, but not CMC.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A8.
Embodiment 9: be relative to the difference of embodiment 1, in step 4, heat treatment heating process is different.
In the present embodiment, step 4 heat treatment temperature rises to 400 DEG C, but not is heated to 250 DEG C.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A9.
Embodiment 10: be relative to the difference of embodiment 1, in step 4, heat treatment heating process is different.
Step heating during step 4 heat treatment in the present embodiment: at room temperature first with first heating rate to 150 DEG C of 1 DEG C/min, insulation 0.5h; Then with second heating rate to 250 DEG C of 5 DEG C/min, insulation 2h.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule A10.
Comparative example 1: the difference of the present embodiment and embodiment 1 is: in the present embodiment, the inorganic binder in embodiment 1 is removed.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule B1.
Comparative example 2: the difference of the present embodiment and embodiment 1 is: in the present embodiment, the organic high molecular compound in embodiment 1 is removed.Remaining preparation process is all identical with embodiment 1, no longer repeats at this, obtained activated carbon granule B2.
By A1 (embodiment 1) obtained in above-mentioned 10 embodiments, A2 (embodiment 2), A3 (embodiment 3), A4 (embodiment 4), A5 (embodiment 5), A6 (embodiment 6), A7 (embodiment 7), A8 (embodiment 8), A9 (embodiment 9), A10 (embodiment 10), B1 (comparative example 1), B2 (comparative example 2) tests the specific area of activated carbon granule on ASAP2460 equipment, pore-size distribution and pore volume, displacement volume when adopting the HCRJ047-1999 standard testing activated carbon granule of State Environmental Protection Administration to work and intensity, test result is as shown in table 1.
Table 1
As shown in Figure 1, as shown in Figure 2, abscissa is pore size to pore-size distribution to the pattern of the obtained activated carbon granule A1 in embodiment 1, and ordinate is dv/dlogD, represents the pore volume shared by hole in this aperture.Activated carbon granule is column as can be seen from Figure 1, can obtain activated carbon granule have micropore-mesopore-macropore composite bore diameter structure from Fig. 2.Shape appearance figure and Fig. 1 of the activated carbon granule of all the other 9 embodiments are similar, and graph of pore diameter distribution and Fig. 2 are similar to, and do not enumerate at this.
Compared by the data of table 1:
The preparation method of this detailed description of the invention, when the specific area of raw material activated carbon powder is 1800m
2during/g, the specific area of obtained activated carbon granule is at 1300 ~ 1600m
2/ g, shows that the preparation method of this detailed description of the invention significantly can not reduce the specific surface intensity of raw material itself.When the specific area of raw material itself is larger, the specific area of corresponding obtained activated carbon granule also can be larger, just slightly can reduce than raw material ratio surface area, when significantly reducing the specific surface intensity of raw material itself.
Select inorganic binder and the organic high molecular compound containing phenyl ring in embodiment 1 ~ 9 simultaneously, relative to the situation of organic high molecular compound only containing phenyl ring in comparative example 1, the activated carbon granule made still has high-specific surface area, bulk density is lower 29g/L also, but pore volume percentage is then lower, only 25%, cannot reach 9 embodiments such more than 30%.Be reflected to performance during work, then the normal butane displacement volume only 7.8g/100g of activated carbon granule, intensity also only 90%.And relative to only there being the situation of inorganic binder in comparative example 2, the specific area of the activated carbon granule made significantly reduces, only 11060m
2/ g.Be reflected to performance during work, then the normal butane displacement volume only 7.2g/100g of activated carbon granule, intensity also only 88%.To sum up, select inorganic binder and the scheme of organic high molecular compound containing phenyl ring simultaneously, just can obtain high-specific surface area, high pore volume percentage, so normal butane displacement volume and intensity all higher.
Comparing embodiment 1,2 (inorganic binder all comprises aluminium dihydrogen phosphate) and embodiment 3 (inorganic binder does not comprise aluminium dihydrogen phosphate), the performance of the activated carbon granule of known embodiment 1 and 2 is better (normal butane displacement volume and intensity are all high than embodiment 3).Possible reason is, the aluminium ion in the aluminium dihydrogen phosphate in inorganic binder strong complexing occurs, the H discharged with containing CMC in the organic high molecular compound of phenyl ring
3pO4 again can as the expanding agent of the activator of CMC and activated carbon powder, and make CMC at about the 250 DEG C Viability charcoals of activation, promote the mesoporous capacity of activated carbon granule, thus pore volume percentage is higher, displacement volume is also just higher.And the Si composition in inorganic binder, the material of similar cement can be formed with the composition such as aluminium dihydrogen phosphate, active carbon, make active carbon have very high intensity.To sum up, when inorganic binder comprises silica gel and aluminium dihydrogen phosphate, scheme is comparatively preferred.
Comparing embodiment 1,6,7 and 8, although known CMC, coal tar, pitch and phenolic resins are all organic high molecular compound, but CMC (embodiment 1), coal tar (embodiment 6), pitch (embodiment 7) are relative to the scheme of phenolic resins (embodiment 8), displacement volume and the intensity of obtained activated carbon granule are all higher, and CMC, coal tar and pitch are comparatively preferred schemes.
Comparing embodiment 1,9 and 10, the displacement volume of the activated carbon granule that the scheme of known embodiment 10 step heating obtains relative to the scheme of heated in one step and intensity all higher.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, make some substituting or obvious modification without departing from the inventive concept of the premise, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. the preparation method of an activated carbon granule, it is characterized in that: comprise the following steps: 1) water containing the organic high molecular compound of phenyl ring, the inorganic binder of 0.1 ~ 15wt.% and 3 ~ 60wt.% of the absorbent charcoal powder body of 10 ~ 89.8wt.%, 0.1 ~ 15wt.% is mixed, at 25 ~ 200 DEG C, mediate 0.1 ~ 2h obtain active charcoal sludge; 2) by step 1) active charcoal sludge that obtains at room temperature is extruded into granular active charcoal sludge; 3) by step 2) the granular active charcoal sludge that obtains dry 0.5 ~ 2h at 50 ~ 110 DEG C; 4) by step 3) the dried granular active carbon that obtains is under the protection of inert gas, and be at room temperature heated to 250 ~ 800 DEG C, insulation 0.1 ~ 20h, obtains end product activated carbon granule.
2. the preparation method of activated carbon granule according to claim 1, is characterized in that: described step 4) in, adopt two step heating heating: at room temperature first with the first heating rate to 180 ~ 250 DEG C, insulation 0.1-2h; Then with the second heating rate to 250 ~ 800 DEG C, insulation 0.1 ~ 20h; Wherein, described first rate of heat addition is less than described second rate of heat addition, and described first rate of heat addition and described second rate of heat addition are in the scope of 0.1 ~ 10 DEG C/min.
3. the preparation method of activated carbon granule according to claim 1, is characterized in that: described step 1) in, the described organic high molecular compound containing phenyl ring is pitch, coal tar or carboxymethyl cellulose.
4. the preparation method of activated carbon granule according to claim 1, is characterized in that: described step 1) in, described inorganic binder comprises silica gel and aluminium dihydrogen phosphate.
5. the preparation method of activated carbon granule according to claim 1, is characterized in that: described step 2) in, be extruded into the active charcoal sludge of cylindrical pellet or spherical particle.
6. the preparation method of activated carbon granule according to claim 5, is characterized in that: described columned round diameter is 1 ~ 10mm, and length is 1 ~ 50mm.
7. the preparation method of activated carbon granule according to claim 1, is characterized in that: described step 4) in, heat under the protection of nitrogen.
8. the activated carbon granule that obtains of a preparation method according to claim 1, it is characterized in that: described activated carbon granule has the composite bore diameter structure of micropore-mesopore-macropore, in composite bore diameter structure, micropore is the hole that aperture is less than 2nm, mesoporous is the hole of aperture between 2nm ~ 50nm, and macropore is the hole that aperture is greater than 50nm; And aperture accounts for the mark of total pore volume 20% ~ 50% at the pore volume in the hole of 2-~ 5nm.
9. for a canister for absorbing gasoline steam, it is characterized in that: the active carbon loaded in described canister is activated carbon granule as claimed in claim 8.
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| CN103962100A (en) * | 2013-02-04 | 2014-08-06 | 济南圣泉集团股份有限公司 | Adsorption material and preparation method thereof |
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| CN108236920B (en) * | 2016-12-26 | 2022-07-19 | 株式会社马勒滤清系统 | Honeycomb adsorbent, method for producing same, and canister |
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| CN107824158A (en) * | 2017-10-11 | 2018-03-23 | 上海市政工程设计研究总院（集团）有限公司 | A kind of method that sewage treatment plant's dewatered sludge prepares active sludge carbon |
| CN108751193A (en) * | 2018-08-29 | 2018-11-06 | 陕西师范大学 | A kind of preparation method of semi-coke end pilum shaped activated carbon |
| CN111097391A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | Organic waste gas adsorbent and preparation method thereof |
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