CN105858655B - A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density - Google Patents
A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density Download PDFInfo
- Publication number
- CN105858655B CN105858655B CN201610378352.XA CN201610378352A CN105858655B CN 105858655 B CN105858655 B CN 105858655B CN 201610378352 A CN201610378352 A CN 201610378352A CN 105858655 B CN105858655 B CN 105858655B
- Authority
- CN
- China
- Prior art keywords
- coal
- activated carbon
- preparation
- bulk density
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density, including：According to requirement of the user to activated carbon iodine number and bulk density, carry out coal blending for raw material using two or more coals and crush to obtain feed coal；By the feed coal compound stalk forming, it is granulated, obtains coal particle；Oxidation processes, charing process and activation process are carried out to the coal particle, so that activated carbon is made.The present invention adjusts the bulk density of activated carbon by special coal blending, the activated carbon subsequently prepared is allowd to meet different requirements of the user in terms of charcoal-stripped and bulk density simultaneously, it avoid the need for going to be tested temporarily for user, grope technique, time and cost are saved, is advantageous to seize the first market opportunities.
Description
Technical field
The invention belongs to activated carbon preparation field, more particularly to a kind of coal base agglomerated activated carbon for adjusting product bulk density
Preparation method.
Background technology
Because activated carbon has highly developed pore structure and great specific surface area, its application is from for food
With decolouring and taste removal, the breathing mask of medicine, develop into be used on a large scale solvent refining handled with recovery, water depth, flue gas it is net
Change, blood purification etc., new, higher requirement is proposed to the absorption property of activated carbon.
Activated carbon divides according to form, including pressed active carbon and powdered activated carbon, wherein powdered activated carbon compared into
Type activated carbon possesses larger adsorptivity (iodine number and/or methylene blue number), but due to its powder form, limits using neck
Domain.
In addition, the raw material for preparing activated carbon has coal, wood materials or shell etc., wherein, prepared using shell as raw material
Active fruit shell carbon is usually used in water process, and wood activated charcoal or active fruit shell carbon etc. are easily limited due to raw material sources, it is difficult to long
Phase mass produces, and with the development of society, water pollution composition is also increasingly complicated, macromolecular chemical industry organic pollution gradually increases
Add, society needs increasingly to increase to water process activated carbon, causes active fruit shell carbon to be difficult to satisfy social needs.
Coal resources in China enriches, and yield is big, from the horse's mouth, and the yield of coal base agglomerated activated carbon increases year by year, fully opens
All technologies of preparing using coal as the coal base agglomerated activated carbon of raw material are sent out, it is significant.
However, with the development that coal base agglomerated activated carbon is applied, Product Activity charcoal is also not only segmenting, to meet market pair
The specific needs of coal base agglomerated activated carbon, improve the market competitiveness.Such as market is except (logical to the conventional absorption index of activated carbon
Chang Weidian values) require outside, different users also frequently have different requirements to the bulk density of activated carbon for different purposes,
For example user may may require that the iodine number of activated carbon in the range of 1000 ± 25, bulk density is in the range of 600 ± 25.Ability
Field technique personnel understand, can be by adjusting activating process, such as in certain model in the coal base agglomerated activated carbon technique of routine
Interior extension soak time is enclosed so that the absorption property of activated carbon product is lifted, but can reduce yield simultaneously, and bulk density gradually drops
It is low, it is well known to those skilled in the art, so that meeting activated carbon of the user to iodine number demand, can not necessarily meets to use
Family while also causes the activated carbon product produced in advance of producer to be likely difficult to meet need for the demand of activated carbon bulk density
Will；It if the needs for user go to be tested, grope technique temporarily, can not only increase cost, and waste time and energy, lose
Go the first market opportunities.
The content of the invention
It is an object of the invention to provide a kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density, pass through
The bulk density of special coal blending regulation activated carbon, so that the activated carbon subsequently prepared can meet user in charcoal absorption simultaneously
Requirement in terms of property and bulk density.
A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density, comprises the following steps：
A, it is that raw material carries out coal blending using two or more coals according to requirement of the user to activated carbon iodine number and bulk density
And crush to obtain feed coal, wherein, for required activated carbon iodine number in the range of D ± x, x value is >=20, described to want
The activated carbon bulk density asked is in the range of Z ± y, and y value is >=20, and the dosage of each coal meets equation：
In formula (1), n >=2, CiFor the real density of i coals, SiFor the mass fraction of i coals in feed coal andhiFor vivacity corresponding with i coals, K is yield corresponding with iodine number D；
Wherein, the coal is selected from anthracite, dross coal, jet coal, gas rich coal and coking coal, corresponding with above-mentioned coal successively
Vivacity be 1-1.3,0.9-1.2,0.7-1.0,0.6-0.9 and 0.6-0.9；
Wherein, iodine number D value is 900 ± 25,950 ± 25,1000 ± 25,1050 ± 25,1100 ± 25,1150 ± 25
Or in the range of 1200 ± 25, successively yield K corresponding with above-mentioned iodine number D 30%-35%, 29%-32%, 24%-29%,
In the range of 22%-26%, 20%-24%, 18%-22% and 16%-18%；It will be understood by those skilled in the art that when D's
When value takes while belonged within the scope of two, its for yield K should also belong to simultaneously in two corresponding scopes, such as when D's
When value is 925, corresponding yield K should both belong to this scope of 30%-35%, while should belong to this model of 29%-32% again
Enclose, i.e. K should be in 30%-32% in the range of this, for example K value is 31%.
B, by the feed coal compound stalk forming, granulation, coal particle is obtained；
C, oxidation processes, charing process and activation process are carried out to the coal particle, so that activated carbon is made.
In the present invention, parameter is the numerical value of not tape unit in formula (1), but should be understood that wherein numerical value D is
Corresponding numerical value when iodine number unit takes mg/g, numerical value Z are corresponding numerical value when bulk density unit takes g/l, and numerical value C refers to coal
Corresponding numerical value when real density unit takes g/L.In addition, it is 8- that iodine number and bulk density that the present invention is discussed, which refer to that sieve takes granularity,
The iodine number and bulk density of the granular activated carbon product of 30 mesh.
In the present invention, step a is according to requirement of the user to activated carbon iodine number and bulk density, utilizes two or more coals
Kind carries out coal blending for raw material and crushed to obtain feed coal, specific coal blending and crushing process to be known in the art, can this hair
Bright each coal used is well mixed and is crushed to less particle size, such as crosses 170 mesh, 180 mesh or 200 mesh sieve (Taylors
Standard screen).
Found by numerous studies, when carrying out coal blending according to formula (1), help to make final activated carbon product iodine number and
Bulk density reaches user's requirement simultaneously, and is not in that the iodine number of activated carbon product meets the requirements substantially, but bulk density is not met
It is required that situation.Certainly, it will be appreciated by those skilled in the art that in the preparation process of activated carbon, particularly in the priming reaction stage,
The adsorptivity of activated carbon and bulk density have its certain changing rule in itself with the progress of priming reaction, and therefore, the present invention is simultaneously
Being not used in preparation has any adsorptivity with heap again than the activated carbon combined, such as the coal that iodine number is 1800 and bulk density is 700
Base agglomerated activated carbon, but for now, what this kind of coal base agglomerated activated carbon was also substantially not present.
In fact, market is also generally left in 900-1200 respectively for the iodine number of coal base briquetting activity and the requirement of bulk density
Right and 300-650 or so, and the present invention is also exactly to be carried out for this common demand, therefore, still with particularly significant
Practical significance.Preferably, in step a, in iodine number D single span, with D increase, K value is in corresponding model
Interior reduction, such as the increase with D are enclosed, K value linearly reduces, i.e., proportional reduction.
In the step a of the present invention, it is preferable that n≤4, for example, 2,3 or 4, skilled in the art realises that, profit
The coal of used multiple types carries out coal blending and has no too big practical significance.The value of the Z is preferably 300-650.This area skill
Art personnel understand, with the reduction of x and y values, i.e., the requirement of the iodine number to activated carbon product and bulk density it is more and more accurate (but
Usual market is also not required for especially accurate), the difficulty of realization is also bigger, on the contrary then smaller, when excessive also without practical significance, is
Ensure the feasibility or success rate of the present invention, above-mentioned x and y value is defined as >=20, so as to so that the present invention into
Power is 85% or even more than 90%, it is preferable that x value is 20-50, and y value is 20-50；It is highly preferred that x value
Value for 20-30, such as 25, y is 20-30, such as 25.
In the present invention, these are common in particular selected from anthracite, dross coal, jet coal, gas rich coal and coking coal for the coal
Coal, it is convenient to carry out, it is preferable that vivacity corresponding with above-mentioned coal is 1-1.2,0.9-1.1,0.8-1.0,0.7- successively
0.9 and 0.7-0.9, for example, vivacity corresponding with anthracite, dross coal, jet coal, gas rich coal and coking coal be respectively 1.1,
1.0th, 0.9,0.8 and 0.8, so that goal of the invention is better achieved.For above-mentioned coal, it is preferable that the anthracite is that Xinjiang is strange
Taibei Tashan Mountain coal, the dross coal are Hami Poly coal, and the jet coal is Fauna From Toksun, Xinjiang Black Hills coal, the gas rich coal
For Qitai Red Hill low-lying area coal, the coking coal is Citroen zx Dahuangshan, Xinjiang coal.
In a preferred embodiment of the present invention, feed coal is crushed to obtain having specified particle size distribution
Coal dust, wherein, the average grain diameter of the feed coal after crushing is not less than 20 μm, wherein, coal dust content of the particle diameter no more than 80 μm is not
Less than 90wt%；Particle diameter is that 40 μm -80 μm of coal dust content is not less than 10wt%.Research finds, when the coal dust have it is above-mentioned
When dynamics is distributed, the rational gradation composition of different-grain diameter coal dust can be realized in forming process, ensures have while shaping strength
Good initial void distribution, is advantageous to the entrance of subsequent activation medium.Preferably, in the feed coal, particle diameter is not more than 80 μ
M coal dust content is not less than 95wt%；Coal dust content of the particle diameter no more than 40 μm is not less than 70wt%；It is further preferred that institute
The average grain diameter for stating coal dust is 20 μm -40 μm, such as 30 μm；It is highly preferred that the particle diameter of the coal dust be not more than 200 μm, such as
No more than 150 μm, or no more than 100 μm.It will be appreciated by those skilled in the art that can be by selecting corresponding standard screen to crushing
Feed coal afterwards is sieved, so as to obtain having the coal dust of above-mentioned size distribution.
It should be noted that if the ash content of each coal is exceeded so that the ash content of final activated carbon product is undesirable
When, those skilled in the art are readily apparent that before coal blending and the ash content of above-mentioned each coal are controlled, such as pass through washing deliming
The smokeless ash content is set to be less than 3wt% Deng processing, certainly specific controlling extent can be with the ash content of final activated carbon product
Meet the requirements and be defined, be, for example, less than 10wt%.This point is known in the art, is repeated no more here.
In the method for the invention, step b is, granulation compressing to above-mentioned raw materials coal, to obtain coal particle.In coal base
In the preparation of activated carbon, the conventional process that the processing being granulated is this area, such as profit are molded and crushed to coal dust
Pulverized coal forming is carried out with two pairs of rollers briquetting forming machine, such as disintegrating machine is crushed using disintegrating machine, then screening obtains certain grain
The coal particle of footpath scope, its detailed process is known in the art, it is preferable that the compressing line pressure of the feed coal is
8t/cm~15t/cm, such as 9t/cm, 10t/cm or 13t/cm；Described broken granulation includes broken and screening, to obtain grain
Coal particle of the footpath between 1mm-10mm, or 3mm-6mm.
In the preparation process in accordance with the present invention, step c is to carry out oxidation processes, charing process and activation process to coal particle,
So that activated carbon is made.It is in process for preparing active carbon to being granulated gained pellet to carry out oxidation processes, charing process and activation process
Conventional processing step, be well known to those skilled in the art.In the present invention, the condition of the oxidation processes can be：
At 200 DEG C~250 DEG C, such as at 220-250 DEG C, oxidation processes are carried out 1.5~4 hours to material using air as oxidant,
So that the oxidation control of material is in lighter degree, while can be such that part oxygen is incorporated into coal, formed on coal top layer one layer it is viscous
The low oxide-film of knot property, so as to reduce the caking property of coal and dilatancy, eliminate binding coal produced in carbonization process it is soft
Change, melt, bond, swelling, and may also speed up priming reaction speed.
The condition of the charing process can be：300~550 DEG C of temperature, Carbonization Atmospheres oxygen content are not more than 5vol%, charcoal
Change 1.5~4 hours processing times, after charing, the charcoal atom combination in carbon compound can form the carbon structure in some cracks
Body, has certain adsorption capacity, and these cracks will form more flourishing microcellular structure in activation procedure.
It will be appreciated by those skilled in the art that in activation process, within the specific limits, as soak time extends, activated carbon
Absorption property (iodine number) lifting of product, but can reduce yield simultaneously, bulk density gradually reduces, when using the side in step a
During method coal blending, those skilled in the art can utilize this rule, such as suitably increase or decrease activation degree, make final activity
The iodine number of charcoal product is satisfied by user's requirement with bulk density.In the present invention, the condition of the activation process can be：Steamed with water
Gas as activated media, carry out priming reaction at 850 DEG C~950 DEG C, the reaction time is 3~6 hours, for example, 4h, 5h or
5.5h, activated media dosage can be 3-4 times of carbonized material weight, such as 3.2 or 3.5 times.
Compared with prior art, the present invention adjusts the bulk density of activated carbon by special coal blending so that subsequently prepares
Activated carbon can meet different requirements of the user in terms of charcoal-stripped (such as iodine number) and bulk density simultaneously, avoid being directed to
The needs of user go to be tested temporarily, grope technique, save time and cost, are advantageous to seize the first market opportunities.In addition, this hair
It is bright using full coal as raw material, without additives such as other auxiliary agents, binding agent or shells, prepare easy.
Embodiment
The present invention is further described with reference to embodiment, but the present invention is not limited in these embodiments.
The characterizing method of the relevant parameter of activated carbon is described as follows：
Iodine sorption value-be measured according to GB/T7702.3-2008；
Methylenum careuleum adsorptive value-be measured according to GB/T7702.6-2008；
Intensity-be measured according to GB/T7072.3-2008；
Remaining parameter is characterized using national standard or this area conventional characterization mode.Anthracite used in following examples
For Qitai north Tashan Mountain coal, its real density is 1.49；The dross coal is Hami Poly coal, and its real density is 1.43g/
L；The jet coal is Xinjiang Urumqi Black Hills mine coal, and its real density is 1.26g/L；The gas rich coal is that the quasi- east in Xinjiang is red
Mountain depression coal, its real density are 1.32g/L；The coking coal is the suitable logical coal of Xinjiang Citroen zx, and its real density is 1.30.
It is compressing during compound stalk forming is carried out to feed coal, be granulated to obtain coal particle in following examples
Line pressure is 9t/cm~10t/cm, is then granulated, to obtain coal particle of the particle diameter between 3mm-6mm.
Embodiment 1
Needed to prepare activated carbon product of the iodine number in 900~950, bulk density between 610~650 according to user, then D
Value is 925, so as to which K takes scope 30%-35% and scope 29%-32% common factor, i.e. 30%-32%, in the present embodiment,
K value is 32%；
By analysis, it is formulated as follows：
Feed coal is made up of 80wt% jet coal, 10wt% dross coal and 10wt% gas rich coals, calculates heap
Proportion Z=
(1.26*0.8*0.9+1.43*0.1*1.1+1.32*0.1*0.7) * 1.7*32%*100=629, due to wherein living
Property coefficient is still finely tuned, it can be considered that above-mentioned coal blending can make the Z values of calculating reach 630, meets formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 170 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates at 910 DEG C -930 DEG C or so, using vapor as activated media
3.5h, activated media dosage are 3.5 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 934mg/g, bulk density
For 642g/l, user's needs are fully met.
Example 2
Needed to prepare activated carbon product of the iodine number in 900~950, bulk density between 530~580 according to user, then D
Value is 925, and in the present embodiment, K value is 31%；
By analysis, it is formulated as follows：
Feed coal is made up of the gas rich coal of 40wt% long bituminous coal and 60wt%.The bulk density Z=calculated
(1.26*0.4*0.9+1.32*0.6*0.7) * 1.7*31%*100=546, similarly it is considered that above-mentioned coal blending energy
The Z values of calculating is reached 555, meet formula (1)；
After above raw coal is ground into 5h in ball mill, the coal dust that average grain diameter is about 29 μm is sized to, wherein, particle diameter is big
In 80 μm of coal dust contents be 2.5wt%；Coal dust content of the particle diameter more than 40 μm is 28wt%.Then compound stalk forming, it is granulated, obtains
To coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 3.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 3.5h at 910 DEG C -930 DEG C or so, by activated media of vapor,
Activated media dosage is 3.2 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 924mg/g, bulk density
For 540g/l, user's needs are fully met.
Example 3
Needed to prepare activated carbon product of the iodine number in 1040~1100, bulk density between 500~550 according to user, then D
Value be 1070, in the present embodiment, K value is 22%；
By analysis, it is formulated as follows：
Feed coal is made up of the long bituminous coal of 20wt%, 70wt% dross coals and 10wt% gas rich coal.The heap calculated
Proportion Z=
(1.26*0.2*0.9+1.43*0.7*1.1+1.32*0.1*0.7) * 1.7*22%*100=531, can similarly recognize
The Z values that can make calculating for above-mentioned coal blending reach 525, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 200-220 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 4h at 910 DEG C -930 DEG C or so, by activated media of vapor, living
Change 3.5 times that medium consumption is carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1068mg/g, heap ratio
Weight is 536g/l, fully meets user's needs.
Embodiment 4
Needed to prepare activated carbon product of the iodine number in 1040~1100, bulk density between 420~460 according to user, then D
Value be 1070, in the present embodiment, K value is 22%；
By analysis, it is formulated as follows：
Feed coal by 60wt% long bituminous coal, 30wt% dross coal and 10wt% gas rich coal density form.It is computed
Obtained bulk density Z=
(1.26*0.6*0.9+1.43*0.3*1.1+1.32*0.1*0.7) * 1.7*22%*100=445, can similarly recognize
The Z values that can make calculating for above-mentioned coal blending reach 440, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 200-220 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 4h at 910 DEG C -930 DEG C or so, by activated media of vapor, living
Change 3.5 times that medium consumption is carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1087mg/g, heap ratio
Weight is 451g/l, fully meets user's needs.
Example 5
Needed to prepare the value of iodine number is more than 1200, bulk density is more than 400 activated carbon product, then D according to user
Can be 1220, in the present embodiment, K value is 17%；
By analysis, it is formulated as follows：
Feed coal is made up of 10wt% long bituminous coal, 80wt% dross coal and 10% gas rich coal.Calculate
Bulk density Z=
(1.26*0.1*0.9+1.43*0.8*1.1+1.32*0.1*0.7) * 1.7*17%*100=423, can similarly recognize
The Z values that can make calculating for above-mentioned coal blending reach 420, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 5.5h at 910 DEG C -930 DEG C or so, by activated media of vapor,
Activated media dosage is 4 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1218mg/g, heap ratio
Weight is 411g/l, fully meets user's needs.
Example 6
Needed to prepare the value of iodine number is more than 1200, bulk density is more than 350 activated carbon product, then D according to user
Can be 1220, in the present embodiment, K value is 17%；
By analysis, it is formulated as follows：
Feed coal is made up of 80wt% long bituminous coal, 10wt% dross coal and 10wt% gas rich coal.Calculate
Bulk density Z=
(1.26*0.8*0.9+1.43*0.1*1.1+1.32*0.1*0.7) * 1.7*17%*100=334, can similarly recognize
The Z values that can make calculating for above-mentioned coal blending reach 330, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter is lived at 910 DEG C -930 DEG C or so using vapor and air as activated media
Change 5.5h, activated media dosage is 4 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1223mg/g, heap ratio
Weight is 324g/l, fully meets user's needs.
Embodiment 7
According to user need to prepare iodine number in activated carbon product of 1080~1120, bulk density 480~540, then D takes
Value can be 1100, and corresponding yield K value is 21%；
By analysis, it is formulated as follows：
Feed coal is made up of the jet coal of 50wt% anthracite, 20wt% coking coal and 30wt%.Calculate
Bulk density Z=
(1.49*0.5*1.2+1.30*0.2*0.8+1.26*0.3*0.9) * 1.7*21%*100=515, can similarly recognize
The Z values that can make calculating for above-mentioned coal blending reach 510, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 3.5h at 910 DEG C -930 DEG C or so, by activated media of vapor,
Activated media dosage is 3.5 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1107mg/g, heap ratio
Weight is 491g/l, meets user's needs.
Embodiment 8
According to user need to prepare iodine number in activated carbon product of 1080~1120, bulk density 530~590, then D takes
Value can be 1100, and in the present embodiment, K value is 21%；
By analysis, it is formulated as follows：
Feed coal is made up of and 30wt% dross coals 50wt% anthracite, 10wt% coking coal, 10wt% long bituminous coal.
The bulk density Z=calculated
(1.49*0.5*1.2+1.30*0.1*0.8+1.26*0.1*0.9+1.43*0.3*1.1) * 1.7*21%=565,
Similarly it is considered that above-mentioned coal blending can make the Z values of calculating reach 560, meet formula (1)；
After above raw coal is ground into 5h in ball mill, coal dust is set to cross 180 mesh sieve extracting screen underflows.Then compound stalk forming,
It is granulated, obtains coal particle；
Obtained coal particle is subjected to oxidation processes, charing process and activation process successively, wherein, oxidizing condition is：
Electric heating converter internal oxidition, for temperature control in the range of 220-250 DEG C, gravity-flow ventilation aoxidizes 2.5h in the case of ground；Carbonization condition is：
After oxidation, converter is heated up, temperature control seals air vent in the range of 520-550 DEG C, material charing 2h, obtains charcoal
Material；Activation condition is：Temperature control in converter activates 3.5h at 910 DEG C -930 DEG C or so, by activated media of vapor,
Activated media dosage is 3.2 times of carbonized material weight.
Activated carbon sieving is obtained, takes granularity in the grain products of 8-30 mesh, after measured, its iodine number is 1117mg/g, heap ratio
Weight is 557g/l, meets user's needs.
Claims (12)
1. a kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density, comprises the following steps：
A, it is that raw material carries out coal blending and powder using two or more coals according to requirement of the user to activated carbon iodine number and bulk density
It is broken to obtain feed coal, wherein, required activated carbon iodine number is in the range of D ± x, and x value is >=20, the requirement
Activated carbon bulk density is in the range of Z ± y, and y value is >=20, and the dosage of each coal meets equation：
<mrow>
<mi>Z</mi>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<msub>
<mi>C</mi>
<mi>i</mi>
</msub>
<msub>
<mi>S</mi>
<mi>i</mi>
</msub>
<msub>
<mi>h</mi>
<mi>i</mi>
</msub>
<mo>&times;</mo>
<mi>K</mi>
<mo>&times;</mo>
<mn>1.7</mn>
<mo>&times;</mo>
<mn>100</mn>
</mrow>
In formula, n >=2, CiFor the real density of i coals, SiFor the mass fraction of i coals in feed coal andhi
For vivacity corresponding with i coals, K is yield corresponding with iodine number D；
Wherein, the coal is selected from anthracite, dross coal, jet coal, gas rich coal and coking coal, corresponding with above-mentioned coal living successively
Property coefficient is 1-1.3,0.9-1.2,0.7-1.0,0.6-0.9 and 0.6-0.9；
Wherein, iodine number D value 900 ± 25,950 ± 25,1000 ± 25,1050 ± 25,1100 ± 25,1150 ± 25 or
In the range of 1200 ± 25, successively yield K corresponding with above-mentioned iodine number D 30%-35%, 29%-32%, 24%-29%,
In the range of 22%-26%, 20%-24%, 18%-22% and 16%-18%；
B, by the feed coal compound stalk forming, granulation, coal particle is obtained；
C, oxidation processes, charing process and activation process are carried out to the coal particle, so that activated carbon is made.
2. preparation method according to claim 1, it is characterised in that in step a, n≤4, Z value are 300-650.
3. preparation method according to claim 2, it is characterised in that in step a, the coal is selected from anthracite, do not glued
When coal, jet coal, gas rich coal and coking coal, successively vivacity corresponding with above-mentioned coal be 1-1.2,0.9-1.1,0.8-1.0,
0.7-0.9 and 0.7-0.9.
4. according to the preparation method described in claim 3, it is characterised in that in step a, the average grain of the feed coal after crushing
Footpath is not less than 20 μm, wherein, coal dust content of the particle diameter no more than 80 μm is not less than 90wt%；Particle diameter is 40 μm -80 μm of coal dust
Content is not less than 10wt%.
5. preparation method according to claim 4, it is characterised in that in the coal dust obtained by step a, particle diameter is not more than 80 μm
Coal dust content be not less than 95wt%；Coal dust content of the particle diameter no more than 40 μm is not less than 70wt%.
6. preparation method according to claim 1, it is characterised in that in step a, the anthracite is Qitai Bei Ta
Mountain coal, the dross coal are Hami Poly coal, and the jet coal is Fauna From Toksun, Xinjiang Black Hills coal, and the gas rich coal is Xinjiang
Qitai Red Hill low-lying area coal, the coking coal are Citroen zx Dahuangshan, Xinjiang coal.
7. preparation method according to claim 1, it is characterised in that in step c, oxidation processes condition is：200 DEG C-
Using air as oxidant is carried out to material oxidation processes 1.5-4 hours at 250 DEG C.
8. preparation method according to claim 1, it is characterised in that in step c, charing process condition is：Temperature 300-
550 DEG C, Carbonization Atmospheres oxygen content be not more than 5vol%, charing process time 1.5h-4h.
9. preparation method according to claim 1, it is characterised in that in step c, activation process condition is：With vapor
As activated media, priming reaction is carried out at 850 DEG C -950 DEG C, soak time is 3-6 hours.
10. according to the preparation method any one of claim 1-9, it is characterised in that in step a, in the single of iodine number D
In span, with D increase, K value reduces in corresponding scope.
11. preparation method according to claim 2, it is characterised in that in step a, x value is 20-50, y value
For 20-50.
12. preparation method according to claim 2, it is characterised in that in step a, x value is 20-30, y value
For 20-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610378352.XA CN105858655B (en) | 2016-05-31 | 2016-05-31 | A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610378352.XA CN105858655B (en) | 2016-05-31 | 2016-05-31 | A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105858655A CN105858655A (en) | 2016-08-17 |
| CN105858655B true CN105858655B (en) | 2018-03-30 |
Family
ID=56641982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610378352.XA Active CN105858655B (en) | 2016-05-31 | 2016-05-31 | A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105858655B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014750A (en) * | 2017-12-15 | 2018-05-11 | 神华集团有限责任公司 | A kind of preparation method of coal base desulfurization activated carbon |
| CN112239206B (en) * | 2020-11-11 | 2021-05-28 | 江苏浦士达环保科技股份有限公司 | Preparation method of low-ash pressed coal activated carbon |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173006C (en) * | 2002-03-18 | 2004-10-27 | 山西焦化集团有限公司 | Method for coal blending coking by using coal petrography analysis |
| CN102021007B (en) * | 2010-12-07 | 2013-09-04 | 江苏沙钢集团有限公司 | Low-cost coking coal blending system |
| CN102424758A (en) * | 2011-10-17 | 2012-04-25 | 开滦（集团）有限责任公司 | Multi-index blended coal coking method |
| CN104699957B (en) * | 2015-02-10 | 2017-07-11 | 山西太钢不锈钢股份有限公司 | Coke making and coal blending based on improved differential evolution algorithm compares optimization method |
| CN104711000B (en) * | 2015-02-27 | 2017-03-01 | 神华集团有限责任公司 | A kind of coking coal blending method |
-
2016
- 2016-05-31 CN CN201610378352.XA patent/CN105858655B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105858655A (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105800610B (en) | A kind of preparation method of binder free coal base agglomerated activated carbon | |
| CN106044769B (en) | A kind of preparation method of the coal base agglomerated activated carbon of high-specific surface area | |
| CN110303035B (en) | Method for repairing cadmium-arsenic composite polluted soil and reducing cadmium and arsenic in rice by manganese-modified rice husk carbon | |
| CN105858655B (en) | A kind of preparation method for the coal base agglomerated activated carbon for adjusting product bulk density | |
| CN106044766B (en) | A kind of preparation method with high adsorption, the coal base agglomerated activated carbon of high bulk density | |
| CN109112297B (en) | Binder for forming converter enriched sludge and converter enriched sludge forming method | |
| CN102642027A (en) | Process for producing reduced iron powder | |
| CN108439399A (en) | A method of preparing the activated carbon of mesoporous prosperity using coal | |
| CN105779059B (en) | A kind of fine coal high intensity forming method of binder free | |
| CN106629712A (en) | Method for preparing activated carbon from mixture of coal and biomass | |
| CN111847409B (en) | Method for producing phosphorite powder ball by utilizing phosphorite powder | |
| CN105905898B (en) | A kind of preparation method of the coal base agglomerated activated carbon of high methylene blue number | |
| CN102120940B (en) | Bamboo pellet fuel and manufacture method thereof | |
| CN111607445A (en) | Semi-coke powder compression molding method | |
| JPS5844733B2 (en) | Furnace preparation for silicon iron production | |
| CN103990430A (en) | Pecan shell/sorghum straw bio-char and preparation method thereof | |
| DE2243194A1 (en) | METAL DEPOSITION METHOD | |
| CN106044768B (en) | A kind of preparation method of coal base agglomerated activated carbon suitable for water process | |
| CN105692614B (en) | A kind of active carbon from coal activation method based on multistage rake stove | |
| DE2253454A1 (en) | PROCESS FOR MANUFACTURING CHARAL AND FERROUS BRIQUETTES | |
| CN104925773A (en) | Method for producing yellow phosphorus with phosphor residue slag and ground phosphate rock | |
| CN105776205B (en) | The active carbon from coal preparation method of circulation in a kind of flue gas | |
| CN206385230U (en) | The system for preparing metallized pellet | |
| CN101920192A (en) | Preparation method of metal carbon material capable of absorbing and reducing refractory pollutants | |
| CN113481364B (en) | Preparation method of vanadium titano-magnetite carbon-containing pellets suitable for rotary kiln iron-making process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |