CN108821287A - A kind of preparation and its application of biomass-based powdered carbon binder - Google Patents
A kind of preparation and its application of biomass-based powdered carbon binder Download PDFInfo
- Publication number
- CN108821287A CN108821287A CN201810669318.7A CN201810669318A CN108821287A CN 108821287 A CN108821287 A CN 108821287A CN 201810669318 A CN201810669318 A CN 201810669318A CN 108821287 A CN108821287 A CN 108821287A
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- Prior art keywords
- biomass
- binder
- powdered carbon
- active carbon
- based powdered
- 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.)
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 66
- 239000002028 Biomass Substances 0.000 title claims abstract description 49
- 239000011230 binding agent Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims 1
- -1 that is Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 239000003463 adsorbent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 240000008042 Zea mays Species 0.000 description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 235000005822 corn Nutrition 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000010907 stover Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 235000013824 polyphenols Nutrition 0.000 description 2
- 239000012265 solid product Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000000227 bioadhesive Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000000686 lactone group Chemical group 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
- C01B32/382—Making shaped products, e.g. fibres, spheres, membranes or foam
Abstract
Active carbon is used as adsorbent to have been widely used for the numerous areas such as food, medicine, chemical industry, environmental protection because having the characteristics that large specific surface area, adsorption capacity are strong, but be difficult to separate, recycle difficulty after powder active carbon absorption, powder active carbon can overcome disadvantage mentioned above by binder molding.It is extremely urgent to develop cheap, environmentally protective powdered carbon binder there are expensive, molding effect is poor, potential secondary pollution problems for existing binder.Abandoned biomass is modified processing by the present invention under specific hydrothermal condition, and the biomass-based powdered carbon binder is obtained after processing.The binder has many advantages, such as that preparation process is simple, at low cost, renewable, environmentally protective compared with traditional binder.
Description
Technical field
The present invention relates to abandoned biomass processing to dispose, and belongs to the solid waste of environmental protection Yu comprehensive utilization of resources field
Object resource utilization new technology is particularly suitable for the high added value recycling of the abandoned biomass such as stalk, the bamboo scraps of enormous amount
It utilizes.
Background technique
Active carbon has the characteristics that large specific surface area, adsorption capacity are strong, pH value is low, chemical/thermal stability is good, is eating
The numerous areas such as product, medicine, chemical industry, environmental protection are applied.Powder active carbon is a kind of industrial common carbon absorbent,
But cause volume adsorption smaller since volume is big, heap density is small, and powder active carbon be difficult to separate when carrying out Water warfare,
It is easy to run off, recycles difficulty；For being also easy to produce dust polluting environment when air purification, therefore limits it and be widely applied.Pass through
For example cylindric, the spherical, tubulose of pressed active carbon etc. that powder active carbon is made to certain shape can overcome problem above.
Compared with powder active carbon, pressed active carbon has controllable size and shape, there is higher heap density and intensity, and no dust is dirty
Dye.Pressed active carbon as a new generation functional material in storage, transport, use etc. during more advantage.
Powder active carbon, which forms binder used, can be divided into two class of organic and inorganic.Inorganic binder can be improved
The mechanical strength of pressed active carbon, but additive amount is less to be formed；And additive amount excessively will lead to carbon content in active carbon
It reduces, absorption property reduces.Industrial pressed active carbon uses organic binder mostly at present.Organic binder can be with when forming
The pressed active carbon of high specific surface area is obtained, but the molding active carbon mechanical performance of organic adhesive is lower, it is used in storage and transportation
It is easy aging in journey and falls bits, and active carbon after molding is difficult to regenerate.In addition, needed in organic binder forming process mostly by
Binder and powdered carbon are heated to certain temperature, consume energy higher, and there are secondary pollution risks.
The present invention is prepared for biomass-based powdered carbon binder by being modified to biomass using abandoned biomass as raw material,
The binder has green, environmental protection, lower-price characteristic.While abandoned biomass prepares biomass-based powdered carbon binder
An effective high value added utilization technology is had found for a large amount of abandoned biomass.
Summary of the invention
The present invention is discarded in conjunction with China for the status that existing active carbon forming binder is expensive, processability is poor
Biomass resource advantage abundant establishes a kind of with the modified new work for preparing biomass-based powdered carbon binder of abandoned biomass
Skill.Concrete technology is characterized in that：After abandoned biomass, water are mixed in certain proportion, it is anti-that gained mixture is put into hydro-thermal
It answers device and carries out hydro-thermal process under certain condition, be separated by solid-liquid separation after being cooled to room temperature, obtained solid drying is after crushing
Obtain the biomass-based powdered carbon binder.
The abandoned biomass is in terms of butt, and the quality proportioning with the water being added when hydro-thermal process is 1:1-1:10
Between.
The hydro-thermal process temperature is preferably 150-300oC, and the processing time is 30-90 minutes.
Solid crushed after being dried is to 80-200 mesh after the hydro-thermal process.
The binder is sufficiently mixed rear room temperature compression molding, molding pressure 5-30Mpa, dwell time with powdered carbon
0.5-10min, then demoulding obtains pressed active carbon.
Advantages of the present invention is as follows：
The present inventor's creativeness has selected the hydrothermal modification treatment to abandoned biomass.The processing can reach simultaneously
To following purpose：1. hydro-thermal carbonization reaction occurs for part biological Zhi Zu branch in hydrothermal treatment process, so the processing reduces
The biodegradability of biomass is to improve the stability of biomass；2. abandoned biomass can not only be made to subtract by hydro-thermal process
The range (uniforming) of few particle size distribution generates apparent pore structure, and can introduce on its surface abundant oxygen-containing
Polar functional group (such as phenolic hydroxyl group, carboxyl, aldehyde radical, lactone group).Relatively uniform particle size, increased pore structure make water
Hot biomass particle in forming process between particle physical force increase, enhance particle between active force be conducive at
Type；The polar functional group on surface makes during particle former that there is only high Van der Waals forces, dispersion force simultaneously, in mold process
It can be formed by forming forces such as liquid bridge, hydrogen bonds between functional group's (mainly oxygen-containing polar functional group) on middle surface.3. biology
The furane resins structure and polyphenol knot formed after three big chemical constituent hemicelluloses, cellulose and lignin hydrothermal modification in matter
The inherently extraordinary natural adhesive of structure (forming force is as shown in Figure 1).
Biomass (butt) and the mixed proportion of water are 1 in water-heat process:1-1:Between 10.Too low water additional amount can be led
Cause it is biomass carbonated be not thorough, and too high water additional amount can greatly increase the energy consumption of hydro-thermal process, while generate a large amount of useless
Water.
Hydro-thermal process temperature is 150-300oC, and the processing time is 30-90 minutes.Too low temperature and too short time meeting
Cause the pore structure of biomass undeveloped limited with surface functional group；And too high reaction temperature and too long of reaction time are not only
It will increase the energy consumption for the treatment of process and will lead to the collapsing of biomass central hole structure after hydro-thermal process and surface functional group
It falls off.
Solid crushed after being dried is to 80-200 mesh after the hydro-thermal process.Too thin granularity increases the energy of crushing process
Consumption, the pore structure that can also block active powdered carbon causes active carbon specific surface area after molding to reduce, and too big particle is due in mould
It presses through that journey void is too big, is difficult to form strong forming force between adjacent particles.
The binder is sufficiently mixed the compression molding of rear room temperature with powdered carbon, and molding pressure is preferably 3-30MPa, when pressure maintaining
Between preferably 0.5-10min, then demoulding obtain pressed active carbon.The time of too high pressure and length increases treatment process energy
Consumption, can also destroy the pore structure of pressed active carbon；And too low pressure and too short time will lead to the machinery of pressed active carbon
Intensity is too low.
Powdered carbon binder prepared by the present invention is with reproducible abandoned biomass such as stalk, leaf, bamboo scraps etc. for raw material system
It is standby, have the characteristics that at low cost, environmental-friendly.
With reference to the accompanying drawings of the specification and the embodiment content that the present invention is further explained.
Detailed description of the invention
The action principle schematic diagram of Fig. 1 hydrothermal modification promotion biomass moulding power.
Fig. 2 abandoned biomass prepares the technological process of production schematic diagram of biomass-based powdered carbon binder.
Specific embodiment
The present invention uses reproducible abandoned biomass such as lignocellulose biomass stalk (corn stover, cotton stalk
Deng), leaf, bamboo scraps etc. and non-wood cellulosic biomass such as feces of livestock and poultry (pig manure, chicken manure, cow dung etc.), municipal sludge, water
Algae etc. is raw material preparation.
Embodiment 1
1. material prepares
Abandoned biomass uses corn stover, and stalk crushed after being dried is spare；
2. the preparation of binder
1) by corn stover (butt), water with 1:5 ratio is sufficiently mixed；
2) after mixture is transferred to hydrothermal reaction kettle, sealing；
3) reaction kettle is heated to 250oC and carries out hydro-thermal process, stops heating, natural cooling after hydrothermal conditions 60min
To room temperature；
4) mixture carries out centrifugation solid waste solid product obtained after separation in reaction kettle；
5) 100 mesh are crushed to after solid product drying at room temperature is the binder.
3. binder-powdered carbon prepares pressed active carbon
1) active carbon (80 mesh, specific surface area 890m2/ g) and binder prepared by the present invention according to 5:After 2 mass ratioes sufficiently
Mixing；
2) it keeps demoulding (cylindrical long 5cm, diameter 1.5cm) after 1min under molding pressure 5Mpa pressure after mixing；
4. the performance measurement of pressed active carbon
1) specific surface area is carried out using nitrogen adsorption-desorption method.Pressed active carbon takes off under the conditions of 120oC before absorption
Gas 2h；2) mechanical strength tests compression strength on universal testing machine.
The results are shown in Table 1 for analysis.
Embodiment 2
1. material, which prepares biomass material, uses bamboo scraps.
2. the preparation of binder
Except 1) replacing corn stover with bamboo scraps；
3) hydrothermal temperature 220oC, hydrothermal conditions 45min；
5) it is the same as example 1 outside solid crushed after being dried to 80 mesh.
1.3. binder-powdered carbon prepares pressed active carbon
Except 1) powder active carbon and binder are according to 5:1 mass ratio is sufficiently mixed；
2) it is molded 10Map in, keeps being the same as example 1 outside pressure 2min.
4. pressed active carbon performance measurement is same as Example 1.
The results are shown in Table 1 for analysis.
Embodiment 3
1. material, which prepares biomass material, uses bamboo scraps.
2. the preparation of binder
Except 3) hydrothermal temperature 250oC, hydrothermal conditions 60min are the same as example 1 outside.
3. binder-powdered carbon prepares pressed active carbon except 15Map is molded in 2), keep outside pressure 2min with embodiment 1
It is identical.
4. pressed active carbon performance measurement is same as Example 1.
The results are shown in Table 1 for analysis.
The specific surface area and compression strength for the binder pressed active carbon that table 1. is prepared through the invention.
| Embodiment | Specific surface area (m2/g) | Compression strength (MPa) |
| One | 680 | 5 |
| Two | 746 | 10 |
| Three | 728 | 15 |
As it can be seen from table 1 this has by the biomass-based molding pressed active carbon of powdered carbon binder of invention preparation
Very high mechanical strength, and since there are pore structures for binder prepared by the present invention itself, so pressed active carbon has
Very high specific surface area.In addition, binder prepared by the present invention using abandoned biomass as raw material, has at low cost, green ring
The advantages that guarantor.
Claims (6)
1. a kind of preparation and its application of biomass-based powdered carbon binder, it is characterised in that：By abandoned biomass and water according to one
After fixed ratio mixing, gained mixture is put into hydrothermal reactor and carries out hydro-thermal process under certain condition, is cooled to room temperature
After be separated by solid-liquid separation, the obtained solid, that is, biomass-based powdered carbon binder.
2. the preparation and its application of a kind of biomass-based powdered carbon binder according to claim 1, it is characterized in that：Described
Biomass is in terms of butt, and the quality proportioning for the water that when hydro-thermal process is added is 1:1-1:Between 10.
3. a kind of preparation and its application of biomass-based powdered carbon binder described in -2 any one according to claim 1, special
Sign is：The hydro-thermal process temperature is 150-300 DEG C, and the processing time is 30-90 minutes.
4. the preparation and its application of a kind of biomass-based powdered carbon binder according to claim 1 to 3, special
Sign is：It by solid crushed after being dried to 80-200 mesh is the biomass-based powdered carbon binder after hydro-thermal process.
5. the preparation and its application of a kind of biomass-based powdered carbon binder according to any one of claims 1-4, special
Sign is：It is pressed and molded at room temperature after binder is mixed according to a certain percentage with powdered carbon, molding pressure 3-30Mpa, pressure maintaining
Pressed active carbon is obtained after demoulding after time 0.5-10min.
6. biomass-based powdered carbon binder and Constitutive active that method described in claim 1-5 any one is prepared
Charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669318.7A CN108821287A (en) | 2018-06-26 | 2018-06-26 | A kind of preparation and its application of biomass-based powdered carbon binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669318.7A CN108821287A (en) | 2018-06-26 | 2018-06-26 | A kind of preparation and its application of biomass-based powdered carbon binder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108821287A true CN108821287A (en) | 2018-11-16 |
Family
ID=64138617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810669318.7A Pending CN108821287A (en) | 2018-06-26 | 2018-06-26 | A kind of preparation and its application of biomass-based powdered carbon binder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108821287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182801A (en) * | 2019-04-01 | 2019-08-30 | 复旦大学 | A method of granular activated carbon is prepared with biomass |
| CN110921973A (en) * | 2019-10-29 | 2020-03-27 | 长江大学 | Integrated biogas slurry and biogas residue treatment device and method |
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| CN107531487A (en) * | 2015-04-13 | 2018-01-02 | 科廷大学 | Produce the method and system of solid carbonaceous material |
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Application publication date: 20181116 |