CN105148843B - A kind of activated carbon granule and preparation method thereof and canister - Google Patents
A kind of activated carbon granule and preparation method thereof and canister Download PDFInfo
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- CN105148843B CN105148843B CN201510629711.XA CN201510629711A CN105148843B CN 105148843 B CN105148843 B CN 105148843B CN 201510629711 A CN201510629711 A CN 201510629711A CN 105148843 B CN105148843 B CN 105148843B
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Abstract
The invention discloses a kind of activated carbon granule and preparation method thereof and canister, the preparation method of activated carbon granule comprises the following steps：1) 10~89.8wt.% absorbent charcoal powder body, the 0.1~15wt.% organic high molecular compound containing phenyl ring, 0.1~15wt.% inorganic binder and 3~60wt.% water are well mixed, 0.1~2h is mediated at 25~200 DEG C and obtains active charcoal sludge；2) active charcoal sludge for obtaining step 1) is extruded into granular active charcoal sludge at room temperature；3) the granular active charcoal sludge for obtaining step 2) dries 0.5~2h at 50~110 DEG C；4) the dried granular activated carbon for obtaining step 3) is heated to 250~800 DEG C at room temperature under the protection of inert gas, is incubated 0.1~20h, obtains final product activated carbon granule.The preparation method of the activated carbon granule of the present invention, displacement volume during obtained activated carbon granule absorbing gasoline steam is big, and intensity is high, very fast to the adsorption and desorption speed of gasoline vapor.
Description
【Technical field】
The present invention relates to the preparation method of activated carbon granule, more particularly to a kind of work for gasoline vapor adsorption recovery
Property charcoal particle and preparation method thereof and canister.
【Background technology】
The light-end products high volatility such as gasoline, there is the steaming of more serious oil gas during storage, transport and use
Send out loss problem.Loss during oil storage and transportation is generally the 1 ‰ -4 ‰ of its processing capacity, has both wasted the oil money of preciousness
Source, reduces oil quality again, and the oil gas of loss can promote the formation of photochemical fog, have a strong impact on atmospheric environment again.
The excellent adsorbent of utility carries out selective absorption to oil gas, realizes the adsorption recovery of product vapour, is one
The effective Investigation of Petroleum Vapor Recovery Technology of kind, and the selection of adsorbent is the key of technique.Activated carbon is a kind of hydrophobic adsorbent,
With nonpolar surface texture, particularly suitable for carrying out the adsorption recovery of oil gas from gas or liquid mixture.
To prevent gasoline volatilization from wasting fuel and pollution environment, Europe and the U.S. are early in the 1970s with regard to statute
Rule requires that the canister of the installation filling activated carbon on automobile adsorbs to gasoline vapor.China is since the 1980s
The research and development of this aspect and equipment are introduced, and have formulated national standard to oil and product oil storage, fortune, sale in 2006
Industry and the Air Pollutant Emission of gas station are strictly limited.As country is to environmental protection and the progressively attention of energy-saving and emission-reduction, oil
Gas recovery activated carbon will obtain tremendous expansion.Activated carbon for the gasoline vapors recovery is typically seated in canister, is arranged on
On automobile.The operation principle of canister is：When automobile engine is stopped, the gasoline volatilized by carburetor, cylinder etc. steams
Vapour is by canister, by the charcoal absorption in canister.When engine works, adsorbed gasoline vapor is in company with the air being inhaled into
Desorption, and together enter cylinder combustion, so as to reach the purpose for preventing that gasoline evaporation from wasting.Activated carbon used in canister is control
The key of gasoline evaporation, it is desirable to which not only absorption property is good for it, and has preferable desorption performance.
In the patent and document of the preparation method of the existing pressed active carbon special about petroleum vapor recovery, disclosed preparation
For method more by high intensity extrusion forming or broken shaping, one side raw material sources are limited, and greatly, cost is high for production power consumption.Separately
On the one hand the low intensity for the pressed active carbon being prepared, granulated carbon is in irregular shape, may there is accumulation in actual use
The problem of density is too high, back pressure is big.Moreover, activated carbon made from existing most of preparation method to the adsorbing of gasoline vapor, take off
Attached speed is slower.
【The content of the invention】
The technical problems to be solved by the invention are：Above-mentioned the deficiencies in the prior art are made up, propose a kind of activated carbon granule
Preparation method, displacement volume during obtained activated carbon granule absorbing gasoline steam is big, and intensity is high, the suction to gasoline vapor
It is attached, desorption rate is very fast.
The technical problem of the present invention is solved by following technical scheme：
A kind of preparation method of activated carbon granule, comprises the following steps：1) by 10~89.8wt.% absorbent charcoal powder body,
0.1~15wt.% the organic high molecular compound containing phenyl ring, 0.1~15wt.% inorganic binder and 3~60wt.%
Water is well mixed, and 0.1~2h is mediated at 25~200 DEG C and obtains active charcoal sludge；2) active charcoal sludge for obtaining step 1) is in room
Granular active charcoal sludge is extruded under temperature；3) the granular active charcoal sludge for obtaining step 2) is dried at 50~110 DEG C
0.5~2h；4) the dried granular activated carbon for obtaining step 3) heats at room temperature under the protection of inert gas
To 250~800 DEG C, 0.1~20h is incubated, obtains final product activated carbon granule.
A kind of activated carbon granule according to made from above-mentioned preparation method, the activated carbon granule have micropore-mesopore-big
The composite bore diameter structure in hole, micropore is the hole that aperture is less than 2nm in composite bore diameter structure, it is mesoporous for aperture 2nm~50nm it
Between hole, macropore be aperture be more than 50nm hole；And pore volume of the aperture in 2-~5nm hole account for the fraction of total pore volume 20%~
50%.
A kind of canister for absorbing gasoline steam, the activated carbon loaded in the canister is activated carbon as described above
Grain.
The beneficial effect that the present invention is compared with the prior art is：
The preparation method of the activated carbon granule of the present invention, the batch mixing kneading process of step 1), auxiliary are used in preparation method
With the extrusion of step 2), and by step 3) dry and step 4) heating heat treatment after be made shaping activated carbon granule.System
The activated carbon granule obtained, experiments verify that, the composite bore diameter structure with micropore-mesopore-macropore, and aperture is in 2~5nm hole
Pore volume account for the fraction of total pore volume 20%~50%.High pore volume fraction and composite bore diameter distribution with 2-~5nm holes,
Through further test, intensity is high during its work, in 95%~99% scope (be higher than prior art 95%), long lifespan, just
Butane working capacity is at 8.5~13g/100g (5~8g/100g for being higher than prior art).And with micropore-mesopore-macropore
Composite bore diameter structure, micropore can improve the absorption affinity of activated carbon granule, the mesoporous adsorbance that can improve activated carbon granule, greatly
Hole provides express passway for absorption so that activated carbon granule has the adsorption desorption speed that can accelerate oil gas while big adsorption capacity
Rate.The preparation method of the present invention, process are simple, it is not necessary to the low and high consumption of yield rate caused by general high voltage extruder grain method
Energy.Powdered activated carbon is used during preparation as raw material, compared to the conventional preparation for using wood chip, hard fruit shell or coal as raw material
Method, powdered activated carbon, which has, needs not move through the problems such as carbonization reduces with the granule strength caused by activation step, and powdery is lived
Property charcoal wide material sources, advantage of lower cost.And only relate to the process such as batch mixing kneading, extrusion, dry, heat treatment, production cost
It is relatively low.
【Brief description of the drawings】
Fig. 1 is the pattern picture of activated carbon granule made from the embodiment 1 of the specific embodiment of the invention；
Fig. 2 is the graph of pore diameter distribution of activated carbon granule made from the embodiment 1 of the specific embodiment of the invention.
【Embodiment】
With reference to embodiment and compare accompanying drawing the present invention is described in further details.
It has been investigated that charcoal absorption oil gas is mainly nonpolar physical adsorption process caused by Van der Waals force, absorption
The physical arrangement relating to parameters such as ability and the specific surface area of activated carbon, pore volume, pore-size distribution, hydrocarbon molecules diameter and activated carbon
Aperture size is closer to adsorption capacity is stronger.Activated carbon specific surface area is higher, and adsorption capacity is stronger.For pore volume, preferable hole
Footpath scope be micropore higher limit to the scope between mesoporous lower limit, i.e. 2~5nm, therefore pore diameter range is in 2~5nm hole
The fraction that pore volume accounts for total pore volume is higher, and adsorption capacity is stronger.It is such as single aperture structure in addition, during pore-size distribution, such as singly
One micropore, or single mesoporous, then or single macropore, adsorption effect it is undesirable.Such as it is compound aperture structure,
Micropore can improve the absorption affinity of activated carbon granule, the mesoporous adsorbance that can improve activated carbon granule, and macropore provides for absorption
Express passway so that activated carbon granule has quick adsorption desorption performance while having big adsorption capacity, contribute to lifting to inhale
Attached effect.
The preparation method of the activated carbon granule of present embodiment, comprises the following steps：
1) by 10~89.8wt.% absorbent charcoal powder body, 0.1~15wt.% the organic high molecular compound containing phenyl ring,
0.1~15wt.% inorganic binder and 3~60wt.% water are well mixed, and 0.1~2h is mediated at 25~200 DEG C and is obtained
Active charcoal sludge.
Wherein, inorganic binder can be clay, sodium metasilicate, sodium metaaluminate, Ludox, Alumina gel, aluminium hydroxide, thin water aluminium
Stone, aluminum phosphate, phosphoric acid hydrogen two aluminium, magnesia, calcium oxide, barium monoxide, sodium oxide molybdena, sodium chloride, magnesium chloride, calcium chloride one kind or
A variety of mixtures.Verified through subsequent experimental, inorganic binder selects what is be made up of silica gel, magnesia and aluminium dihydrogen phosphate three
During mixture, effect is more excellent.
Organic high molecular compound containing phenyl ring can be pitch, coal tar, cetyl trimethylammonium bromide, dodecyl
Benzene sulfonic acid sodium salt, sodium carboxymethylcellulose, starch, phenolic resin, arabia gum, one or more mixtures of paraffin.Through
Subsequent experimental verifies that when organic high molecular compound is from pitch, coal tar or carboxymethyl cellulose, effect is more excellent.
In the step, raw material selection absorbent charcoal powder body, the organic high molecular compound containing phenyl ring, the inorganic bond of preparation
Four kinds of components of agent and water.Wherein, the organic high molecular compound containing phenyl ring except play organic binder bond effect, also with it is inorganic
Binding agent is compound, promotes each other.Relative to individually selecting inorganic binder in the past or individually selecting organic binder bond, wrap simultaneously
When including organic high molecular compound and inorganic binder, organic high molecular compound and inorganic binder will except as binding agent
Carbon dust is bonded to outside the activated carbon granule of some strength, also acts as the effect of increase consequent activities charcoal mud plasticity.Moreover,
In preparation process, inorganic binder and organic high molecular compound interact, and can lift the intensity of activated carbon granule.And select
Organic high molecular compound containing phenyl ring, the material buildup of dehydrogenation generation class graphite chip architecture is easier in follow-up heat treatment
Formed porous activated carbon, do not easily cause plug-hole, using such organic polymer as organic binder bond be more beneficial for acquisition micropore-
The composite pore structural activated carbon of mesopore-macropore.
2) active charcoal sludge for obtaining step 1) is extruded into granular active charcoal sludge at room temperature.
The step, extruding pelletization, as it is subsequently formed particle and prepares.The graininess shape of extrusion can be wanted according to preparation
Ask to form the shape of needs, for example, it is spherical, cylindric etc..Preferably, planform is columned grain shape.When extrusion is in
When cylindric, follow-up obtained pressed active carbon particle be it is cylindric, then it is cylindric for other shapes, cylindric
Grain accumulation when, more gap can be formed, that is, advantageously reduce back pressure, then when being positioned in activated carbon canister, contribute to air from
Circulated in gap, help to lift the effect of adsorption and desorption gasoline.Preferably, columned round diameter is 1~10mm, long
Spend for 1~50mm.Columned diameter and length are smaller, are more advantageous to gasoline adsorption, but back pressure can raise.Empirical tests, set
When within the above range, the bulk density of activated carbon granule is 0.027~0.035Kg/L, i.e. back pressure is relatively low.By the cylinder of extrusion
The rotated pelletizing of shaped activated carbon mud, the spheric active carbon mud of different-diameter can be prepared into, further improve the heap of activated carbon granule
Product density.
3) the granular active charcoal sludge for obtaining step 2) dries 0.5~2h at 50~110 DEG C.
4) the dried granular activated carbon for obtaining step 3) heats at room temperature under the protection of inert gas
To 250~800 DEG C, 0.1~20h is incubated, obtains final product activated carbon granule.
Heated after above-mentioned drying so that activated carbon granule activates, and organic high molecular compound carbonated transition therein is work
Property charcoal, so as to activated carbon granule activated carbon component content it is higher.In inert gas, such as N2Protection under, be advantageous to suppress
The decomposition of carbon, it is ensured that activated carbon composition.
Preferably, step heating during heating, i.e. at room temperature first with the first heating rate to 180~250 DEG C, protect
Warm 0.1-2h；Then with the second heating rate to 250~800 DEG C, it is incubated 0.1~20h；Wherein, the first heating speed
Rate is less than second rate of heat addition, and first rate of heat addition and second rate of heat addition are 0.1~10 DEG C/min's
In the range of.This step heating, relative to heated in one step, the first heating process of two steps heating contributes to organic polymer chemical combination
Thing is carbonized, and compound between organic high molecular compound and inorganic binder.Second step heating process, with faster rate plus
Heat, energy consumption on the one hand can be saved, more important is contribute to the activation of organic high molecular compound and the burning of inorganic binder
Knot, so as to be more beneficial for the strength enhancing of follow-up obtained activated carbon granule and form composite pore structural.
By above-mentioned steps, that is, activated carbon granule is made.Obtained activated carbon granule has answering for micropore-mesopore-macropore
Aperture structure is closed, micropore is hole of the aperture less than 2nm in composite bore diameter structure, and mesoporous is hole of the aperture between 2nm~50nm,
Macropore is the hole that aperture is more than 50nm；And pore volume of the aperture in 2~5nm hole accounts for the fraction of total pore volume 20%~50%.Tool
There is the activated carbon granule of high pore volume fraction and the composite bore diameter distribution in 2~5nm holes, intensity is high during its work, long lifespan, work
Make that capacity is big, so as to have higher adsorption capacity.
Present embodiment also provides a kind of canister for absorbing gasoline steam, and the activated carbon loaded in canister is
The activated carbon granule of said structure feature.
As follows by setting multiple embodiments, the gasoline recovery prepared in experimental verification present embodiment is special
The aperture structure of activated carbon granule, specific surface area, pore volume feature etc., and the performance ginseng such as displacement volume during its work and intensity
Number.
Embodiment 1：
Weigh 300g Ludox+40g aluminium dihydrogen phosphates (i.e. 340g inorganic binders, and 100g carboxymethyl celluloses, i.e.,
CMC (organic high molecular compound containing phenyl ring), which is dissolved in 1600g deionized waters, configures mixed solution, adds hydrochloric acid regulation most
Whole pH value of solution=9, then the binding agent of Organic-inorganic composite is made in strong stirring 1h at ambient temperature.By binding agent with
1000g specific surface areas are 1800m2/ g active powdered carbon uniformly mixes, and extrusion is prepared into circle after then mediating 30min at room temperature
The a diameter of 2mm of shape, the cylindrical activated carbon mud particle that length is 4mm, active charcoal sludge particle dry 2h, Ran Hou at 100 DEG C
N2250 DEG C of heat treatment 1h are heated to from room temperature under protective condition, obtain the activated carbon granule A1 available for the gasoline vapors recovery.
Embodiment 2：It is the composition and mass fraction of inorganic binder relative to the difference of embodiment 1, by silicon
Three kinds of glue, magnesia and aluminium dihydrogen phosphate material composition inorganic binders, and mass fraction changes into 12.33% (in embodiment 1
11.18%) mass fraction of inorganic binder is.
In the present embodiment, the magnesia+40g aluminium dihydrogen phosphates of 300g Ludox+40 are weighed, that is, amount to 380g inorganic bonds
Agent.Remaining preparation process is same as Example 1, is not repeated herein, and activated carbon granule A2 is made.
Embodiment 3：It is inorganic binder relative to the difference of embodiment 1, only by Ludox as inorganic bond
Agent.
In the present embodiment, 340g Ludox is weighed as inorganic binder.Remaining preparation process with the phase of embodiment 1
Together, it is not repeated herein, activated carbon granule A3 is made.
Embodiment 4：Difference relative to embodiment 1 is, the mass fraction of inorganic binder.
The 40g aluminium dihydrogen phosphates in embodiment 1 are changed into 10g aluminium dihydrogen phosphates in the present embodiment, so as to inorganic bond
The mass fraction of agent is 10.3% (mass fraction of inorganic binder is 11.18% in embodiment 1).Remaining preparation process is equal
It is same as Example 1, it is not repeated herein, activated carbon granule A4 is made.
Embodiment 5：Difference relative to embodiment 1 is, the mass fraction of inorganic binder.
The 40g aluminium dihydrogen phosphates in embodiment 1 are changed into 80g aluminium dihydrogen phosphates in the present embodiment, so as to inorganic bond
The mass fraction of agent is 12.3% (mass fraction of inorganic binder is 11.18% in embodiment 1).Remaining preparation process is equal
It is same as Example 1, it is not repeated herein, activated carbon granule A5 is made.
Embodiment 6：Difference relative to embodiment 1 is, the species of the organic high molecular compound containing phenyl ring.
The organic high molecular compound containing phenyl ring selects coal tar, rather than CMC in the present embodiment.Remaining preparation process is equal
It is same as Example 1, it is not repeated herein, activated carbon granule A6 is made.
Embodiment 7：Difference relative to embodiment 1 is, the species of the organic high molecular compound containing phenyl ring.
The organic high molecular compound containing phenyl ring selects mesophase pitch, rather than CMC in the present embodiment.Remaining was prepared
Cheng Jun is same as Example 1, is not repeated herein, and activated carbon granule A7 is made.
Embodiment 8：Difference relative to embodiment 1 is, the species of the organic high molecular compound containing phenyl ring.
The organic high molecular compound containing phenyl ring selects phenolic resin, rather than CMC in the present embodiment.Remaining preparation process
It is same as Example 1, it is not repeated herein, activated carbon granule A8 is made.
Embodiment 9：Difference relative to embodiment 1 is, it is different that heating process is heat-treated in step 4.
Step 4 heat treatment temperature rises to 400 DEG C in the present embodiment, rather than is heated to 250 DEG C.Remaining preparation process with
Embodiment 1 is identical, is not repeated herein, and activated carbon granule A9 is made.
Embodiment 10：Difference relative to embodiment 1 is, it is different that heating process is heat-treated in step 4.
Step heating when step 4 is heat-treated in the present embodiment：At room temperature first with 1 DEG C/min the first heating rate
To 150 DEG C, 0.5h is incubated；Then with 5 DEG C/min the second heating rate to 250 DEG C, it is incubated 2h.Remaining preparation process
It is same as Example 1, it is not repeated herein, activated carbon granule A10 is made.
Comparative example 1：The present embodiment and the difference of embodiment 1 are：Will be inorganic viscous in embodiment 1 in the present embodiment
Knot agent is removed.Remaining preparation process is same as Example 1, is not repeated herein, and activated carbon granule B1 is made.
Comparative example 2：The present embodiment and the difference of embodiment 1 are：Will be organic high in embodiment 1 in the present embodiment
Molecular compound removes.Remaining preparation process is same as Example 1, is not repeated herein, and activated carbon granule B2 is made.
By obtained A1 (embodiment 1), A2 (embodiment 2), A3 (embodiment 3), A4 (embodiments in above-mentioned 10 embodiments
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) test specific surface area, pore-size distribution and the hole of activated carbon granule in the equipment of ASAP 2460
Hold, displacement volume and intensity when being worked using the HCRJ047-1999 standard testings activated carbon granule of State Environmental Protection Administration, survey
Test result is as shown in table 1.
Table 1
The pattern of obtained activated carbon granule A1 in embodiment 1 as shown in figure 1, pore-size distribution as shown in Fig. 2 abscissa
It is pore size, ordinate is dv/dlogD, represents the pore volume shared by the hole in the aperture.Activated carbon granule as can be seen from Figure 1
It is in the form of a column, can obtain activated carbon granule from Fig. 2 has micropore-mesopore-macropore composite bore diameter structure.Remaining 9 embodiment
The shape appearance figure of activated carbon granule is similar with Fig. 1, and graph of pore diameter distribution is approximate with Fig. 2, numerous to list herein.
It is compared by the data of table 1：
The preparation method of present embodiment, when the specific surface area of raw material activity powdered carbon is 1800m2During/g, it is made
Activated carbon granule specific surface area in 1300~1600m2/ g, show that the preparation method of present embodiment will not be significantly
Reduce the ratio surface strength of raw material in itself.When the specific surface area of raw material in itself is bigger, the ratio table of corresponding obtained activated carbon granule
Area also can be bigger, simply can slightly be reduced than raw material specific surface area, when that will not be greatly lowered, the ratio surface of raw material in itself is strong
Degree.
Inorganic binder and the organic high molecular compound containing phenyl ring are selected simultaneously in embodiment 1~9, relative to comparative example
Only the situation of the organic high molecular compound containing phenyl ring, the activated carbon granule made still have high-specific surface area in 1, accumulate close
Relatively low 29g/L is spent, but pore volume percentage is then relatively low, only 25%, it is unable to reach more than 30% as 9 embodiments.Instead
The normal butane displacement volume only 7.8g/100g of performance, then activated carbon granule when reflecting work, intensity also only 90%.It is and relative
Only has the situation of inorganic binder in comparative example 2, the specific surface area for the activated carbon granule made is greatly lowered, only
11060m2/g.Reflect performance during work, then the normal butane displacement volume only 7.2g/100g of activated carbon granule, intensity is also only
88%.To sum up, while from the scheme of inorganic binder and the organic high molecular compound containing phenyl ring, high-ratio surface can just be obtained
Long-pending, high pore volume percentage, and then normal butane displacement volume and intensity are higher.
(inorganic binder does not include phosphorus to comparing embodiment 1,2 (inorganic binder includes aluminium dihydrogen phosphate) with embodiment 3
Acid dihydride aluminium), it is known that the performance of the activated carbon granule of Examples 1 and 2 is more preferable, and (normal butane displacement volume and intensity compare embodiment
3 is high).The reason for possible is the aluminium ion in aluminium dihydrogen phosphate in inorganic binder and the organic polymer chemical combination containing phenyl ring
Strong complexing, the H discharged occur for CMC in thing3PO4 again can be as CMC activator and the expanding agent of activated carbon powder so that
CMC activates Viability charcoals at 250 DEG C or so, lifts the mesoporous capacity of activated carbon granule, and so as to which pore volume percentage is higher, work is held
Amount is also just higher.And the Si compositions in inorganic binder, it is cementitious class can be formed with compositions such as aluminium dihydrogen phosphate, activated carbons
Material so that activated carbon has very high intensity.To sum up, when inorganic binder includes silica gel and aluminium dihydrogen phosphate, scheme is more
It is preferred that.
Comparing embodiment 1,6,7 and 8, it is known that although CMC, coal tar, pitch and phenolic resin are all organic polymer
Compound, but CMC (embodiment 1), coal tar (embodiment 6), pitch (embodiment 7) are relative to the side of phenolic resin (embodiment 8)
Case, the displacement volume and intensity of obtained activated carbon granule are higher, and CMC, coal tar and pitch are comparatively preferable sides
Case.
Comparing embodiment 1,9 and 10, it is known that the scheme of the step heating of embodiment 10 is made relative to the scheme of heated in one step
Activated carbon granule displacement volume and intensity it is higher.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Some replacements or obvious modification are made on the premise of not departing from present inventive concept, and performance or purposes are identical, should all be considered as
Belong to protection scope of the present invention.
Claims (8)
- A kind of 1. preparation method of activated carbon granule, it is characterised in that：Comprise the following steps：1) by 10~89.8wt.% work Property powdered carbon body, 0.1~15wt.% carboxymethyl cellulose or organic high molecular compound, 0.1~15wt.% containing phenyl ring Inorganic binder and 3~60wt.% water be well mixed, 0.1~2h is mediated at 25~200 DEG C and obtains active charcoal sludge；2) The active charcoal sludge that step 1) is obtained is extruded into granular active charcoal sludge at room temperature；3) step 2) is obtained granular Active charcoal sludge dries 0.5~2h at 50~110 DEG C；4) the dried granular activated carbon for obtaining step 3) is in inertia Under the protection of gas, at room temperature first with the first heating rate to 180~250 DEG C, 0.1-2h is incubated；Then add with second Hot speed is heated to 250~800 DEG C, is incubated 0.1~20h, obtains final product activated carbon granule；Wherein, first heating Speed is less than second rate of heat addition, and first rate of heat addition and second rate of heat addition are in 0.1~10 DEG C/min In the range of.
- 2. the preparation method of activated carbon granule according to claim 1, it is characterised in that：It is described to contain in the step 1) The organic high molecular compound of phenyl ring is pitch, coal tar.
- 3. the preparation method of activated carbon granule according to claim 1, it is characterised in that：In the step 1), the nothing Machine binding agent includes silica gel and aluminium dihydrogen phosphate.
- 4. the preparation method of activated carbon granule according to claim 1, it is characterised in that：In the step 2), it is extruded into The active charcoal sludge of cylindrical pellet or spherical particle.
- 5. the preparation method of activated carbon granule according to claim 4, it is characterised in that：The columned round diameter For 1~10mm, length is 1~50mm.
- 6. the preparation method of activated carbon granule according to claim 1, it is characterised in that：In the step 4), in nitrogen Protection under heat.
- A kind of 7. activated carbon granule made from preparation method according to claim 1, it is characterised in that：The activated carbon Grain has the composite bore diameter structure of micropore-mesopore-macropore, and micropore is the hole that aperture is less than 2nm in composite bore diameter structure, mesoporous to be Hole of the aperture between 2nm~50nm, macropore are the hole that aperture is more than 50nm；And pore volume of the aperture in 2~5nm hole accounts for total hole The fraction of appearance is 20%~50%.
- A kind of 8. canister for absorbing gasoline steam, it is characterised in that：The activated carbon loaded in the canister is that right such as will Seek the activated carbon granule described in 7.
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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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| CN101214957A (en) * | 2008-01-15 | 2008-07-09 | 青岛华世洁环保科技有限公司 | Water-resistant high mechanical strength honeycomb activated carbon and preparation method thereof |
| 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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| US4051098A (en) * | 1970-04-02 | 1977-09-27 | Sumitomo Durez Company, Ltd. | Method of preparing shaped active carbon |
| JPH08155295A (en) * | 1994-05-31 | 1996-06-18 | Corning Inc | Carbon body and preparation thereof |
| CN100519412C (en) * | 2006-09-29 | 2009-07-29 | 北京化工大学 | Active carbon micro-sphere absorption material and preparation method thereof |
| CN103769047B (en) * | 2014-01-22 | 2015-09-09 | 东风商用车有限公司 | A kind of preparation method of pressed active carbon and pressed active carbon |
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| CN101214957A (en) * | 2008-01-15 | 2008-07-09 | 青岛华世洁环保科技有限公司 | Water-resistant high mechanical strength honeycomb activated carbon and preparation method thereof |
| 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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