CN109650370A - A kind of method that constant pressure hydro-thermal prepares bagasse charcoal - Google Patents
A kind of method that constant pressure hydro-thermal prepares bagasse charcoal Download PDFInfo
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- CN109650370A CN109650370A CN201811630000.4A CN201811630000A CN109650370A CN 109650370 A CN109650370 A CN 109650370A CN 201811630000 A CN201811630000 A CN 201811630000A CN 109650370 A CN109650370 A CN 109650370A
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- Prior art keywords
- bagasse
- charcoal
- constant pressure
- pressure hydro
- powder
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- 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
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of method that constant pressure hydro-thermal prepares bagasse charcoal, and this method belongs to biomass comprehensive using field, and this method includes following operating procedure: (1) water being added to be configured to the slurry that mass percent concentration is 3~5% in bagasse powder；(2) higher boiling cosolvent is added into slurry made from step (1), obtains suspension；The additional amount of higher boiling cosolvent is 10-50 times of bagasse powder weight；(3) the prepared suspension of step (2) is added in reaction kettle, stirs and be passed through inert gas, is heated to slight boiling condition, the isothermal pyrolysis 5-20 hours at 90~150 DEG C；(4) solution is depressurized after reaction and is filtered, be washed with water, dry after cooling, obtain bagasse charcoal.The charcoal granule regularizing that the method for the present invention obtains, C content is higher than 60% as the result is shown for elemental analysis, and O content is lower than 15%；The present invention achievees the purpose that the treatment of wastes with processes of wastes against one another, has opened up the new way of bagasse resource utilization.
Description
Technical field
The invention belongs to agricultural solid waste resource utilization fields, and in particular to a kind of constant pressure hydro-thermal prepares bagasse charcoal
Method.
Background technique
A large amount of solid waste i.e. bagasse can be generated in the production process of cane sugar manufacture.Fiber rich in bagasse
Element, thus using bagasse as raw material, it is used for the preparation of plant biological charcoal, the recycling and reusing of solid waste both may be implemented, moreover it is possible to
Huge economic benefit is brought, but has not yet to see the related report for preparing charcoal using constant pressure hydro-thermal method using bagasse.
Charcoal is the solid material comprising at least 60% carbon that the pyrolysis by biomass in oxygen constrained environment obtains
Material.Charcoal is commonly used for soil improvement, water source purifying, carbon fixation and emission reduction and heavy metal adsorption etc..Pass through the hydro-thermal liquid of biomass
Change and can get the high hydrothermal liquefaction charcoal of carbon content.Hydro-thermal method simple process, but the product quality fluctuation prepared is big, and produces
Operation with high pressure is needed, energy consumption is high, at high cost, low efficiency.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of method that constant pressure hydro-thermal prepares bagasse charcoal, this method
Obtained charcoal granule regularizing, C content height, O content is low, while achieving the purpose that the treatment of wastes with processes of wastes against one another, and opened up bagasse resource
Change the new way utilized.
The present invention solves above-mentioned technical problem with following technical solution:
A kind of method that constant pressure hydro-thermal prepares bagasse charcoal of the present invention, including following operating procedure:
(1) bagasse is ground into powder, then adding water to be configured to mass percent concentration in bagasse powder is 3~5%
Slurry；
(2) higher boiling cosolvent is added into slurry made from step (1), obtains suspension；The higher boiling cosolvent
It is by weight that 1:1 is compounded by aqueous slkali A and high boiling water-miscible organic solvent B, the additional amount of higher boiling cosolvent
It is 10-50 times of bagasse powder weight；
(3) the prepared suspension of step (2) is added in reaction kettle, stirred and continued by the flow velocity of 10-15mL/min
Be passed through inert gas, and be heated to slight boiling condition, the isothermal pyrolysis 5-20 hours at 90~150 DEG C, mixing speed be 50 turns/
Minute；
(4) solution is depressurized after reaction and is filtered, is washed with water 5 times after cooling, by the powder after washing at 90 DEG C
Drying completely, obtains bagasse charcoal.
In step (1), before the bagasse crushes, bagasse is dried through 80 DEG C first, makes its moisture content lower than 20%, then will
The bagasse of drying is cut into the segment of 1~2cm long, then crushed 200 meshes with ball mill pulverizer, obtains partial size less than 200 purposes
Bagasse powder.
In step (2), the additional amount of higher boiling cosolvent is preferably 10-30 times of bagasse powder weight.
In step (2), the aqueous slkali A is KOH solution or NAOH solution；The high boiling water-miscible organic solvent B
For ethylene glycol or propylene glycol or butanediol.
In step (3), the inert gas is nitrogen or helium.
In step (3), the preferable temperature of isothermal pyrolysis is 100~110 DEG C, and the time is 6-12 hours.
Reaction principle of the invention is as follows:
The present invention is prepared in the technique of bagasse charcoal using constant pressure hydro-thermal method, and bagasse occurs first in hydro-thermal process
Delignification, and then be pyrolyzed under the action of higher boiling cosolvent.Bagasse is pyrolyzed in the environment that liquid water surrounds,
Opposing stationary pyrolysis environment help to obtain the charcoal of granule regularizing, and in conventional hydrothermal method technique, when at 100 DEG C or more
When being heated up and keeping the temperature operation, the suspension in kettle can be in fluidized state always, and bubble is incessantly by suspension bottom
It is seethed to liquid level, forms the chaos state of a great variation, the regularity for greatly charcoal being interfered to be formed.On overcoming
Disadvantage is stated, the higher boiling cosolvent method that the present invention uses can effectively reduce pyrolysis temperature, so that constant pressure hydro-thermal condition can be effective
Prepare the bagasse charcoal of granule regularizing.
The method of the present invention compared with prior art, has the advantages that
(1) compared with conventional hydrothermal method, reaction condition is mild, can carry out under normal pressure；
(2) the bagasse charcoal granule regularizing that the method for the present invention is prepared, C content is higher than as the result is shown for elemental analysis
60%, O content is lower than 15%；
(3) using agricultural wastes bagasse as raw material, waste recycling is good for the environment the present invention；
(4) present invention recycles agricultural solid waste, and simple process, high-efficient, product quality is excellent.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment to this
Invention is further described.
Embodiment 1
The method that a kind of constant pressure hydro-thermal of the invention prepares bagasse charcoal, the specific steps are as follows:
(1) bagasse used dries through 80 DEG C for a large amount of bagasses generated in the production process of cane sugar manufacture, keeps its aqueous
Rate is lower than 20%, then the bagasse of drying is cut into the segment of 1~2cm long, then crushed 200 meshes with ball mill pulverizer, obtained
Bagasse powder of the partial size less than 200 mesh is obtained, bagasse powder plus water are configured to the slurry that mass percent concentration is 5%.
(2) higher boiling cosolvent is added into slurry made from step (1), obtains suspension；The higher boiling cosolvent
It is by weight that 1:1 is compounded by aqueous slkali A and high boiling water-miscible organic solvent B, aqueous slkali A is KOH, higher boiling water
Solubleness organic solvent B is ethylene glycol, and the additional amount of higher boiling cosolvent is 10 times of bagasse powder weight.
(3) the prepared suspension of step (2) is added in reaction kettle, stirs and is continually fed by the flow velocity of 15mL/min
Inert gas, inert gas are nitrogen, are heated to slight boiling condition, and isothermal pyrolysis 6 hours, mixing speed are at a temperature of 100 DEG C
50 revs/min.
(4) solution is depressurized after reaction and is filtered, is washed with water 5 times after cooling, by the powder after washing at 90 DEG C
Drying completely obtains uniform particle sizes, and the charcoal particle of about 15~25mm, C content is that 66%, O contains as the result is shown for elemental analysis
Amount is 10%.
Embodiment 2
The method that a kind of constant pressure hydro-thermal of the invention prepares bagasse charcoal, the specific steps are as follows:
(1) bagasse used dries through 80 DEG C for a large amount of bagasses generated in the production process of cane sugar manufacture, keeps its aqueous
Rate is lower than 10%, then the bagasse of drying is cut into the segment of 1~2cm long, then crushed 200 meshes with ball mill pulverizer, obtained
Bagasse powder of the partial size less than 200 mesh is obtained, bagasse powder plus water are configured to the slurry that mass percent concentration is 3%.
(2) higher boiling cosolvent is added into slurry made from step (1), obtains suspension, the higher boiling cosolvent
It is by weight that 1:1 is compounded by aqueous slkali A and high boiling water-miscible organic solvent B, aqueous slkali A is KOH, higher boiling water
Solubleness organic solvent B is propylene glycol, and higher boiling cosolvent additional amount is 30 times of bagasse weight.
(3) the prepared suspension of step (2) is added in reaction kettle, stirs and is continually fed by the flow velocity of 10mL/min
Inert gas, inert gas are helium, are heated to slight boiling condition, and isothermal pyrolysis 12 hours, mixing speed are at a temperature of 110 DEG C
50 revs/min.
(4) solution is depressurized after reaction and is filtered, is washed with water 5 times after cooling, by the powder after washing at 90 DEG C
Drying completely obtains uniform particle sizes, and the charcoal particle of about 15~20mm, C content is that 68%, O contains as the result is shown for elemental analysis
Amount is 10%.
Claims (6)
1. a kind of method that constant pressure hydro-thermal prepares bagasse charcoal, this method is using bagasse as raw material, which is characterized in that it includes
Following operating procedure:
(1) bagasse is ground into powder, water is then added to be configured to the slurry that mass percent concentration is 3~5% in bagasse powder
Material；
(2) higher boiling cosolvent is added into slurry made from step (1), obtains suspension；The higher boiling cosolvent is by alkali
Solution A and high boiling water-miscible organic solvent B are that 1:1 is compounded by weight, and the additional amount of higher boiling cosolvent is sugarcane
10-50 times of slag powder weight；
(3) the prepared suspension of step (2) is added in reaction kettle, stirs and is continually fed by the flow velocity of 10-15mL/min
Inert gas, and it is heated to slight boiling condition, the isothermal pyrolysis 5-20 hours at 90~150 DEG C, mixing speed is 50 revs/min；
(4) solution is depressurized after reaction and is filtered, is washed with water 5 times after cooling, at 90 DEG C completely by the powder after washing
Drying, obtains bagasse charcoal.
2. the method that constant pressure hydro-thermal prepares bagasse charcoal according to claim 1, which is characterized in that described in step (1)
Before bagasse crushes, bagasse is dried through 80 DEG C first, makes its moisture content lower than 20%, the bagasse of drying is then cut into 1~2cm long
Segment, then crushed 200 meshes with ball mill pulverizer, obtain bagasse powder of the partial size less than 200 mesh.
3. the method that constant pressure hydro-thermal according to claim 1 or claim 2 prepares bagasse charcoal, which is characterized in that in step (2),
The additional amount of higher boiling cosolvent is preferably 10-30 times of bagasse powder weight.
4. the method that constant pressure hydro-thermal according to claim 1 or claim 2 prepares bagasse charcoal, which is characterized in that in step (2),
The aqueous slkali A is KOH solution or NAOH solution；The high boiling water-miscible organic solvent B be ethylene glycol or propylene glycol,
Or butanediol.
5. the method that constant pressure hydro-thermal according to claim 1 or claim 2 prepares bagasse charcoal, which is characterized in that in step (3),
The inert gas is nitrogen or helium.
6. the method that constant pressure hydro-thermal according to claim 1 or claim 2 prepares bagasse charcoal, which is characterized in that in step (3),
The preferable temperature of isothermal pyrolysis is 100~110 DEG C, and the time is 6-12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630000.4A CN109650370A (en) | 2018-12-28 | 2018-12-28 | A kind of method that constant pressure hydro-thermal prepares bagasse charcoal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630000.4A CN109650370A (en) | 2018-12-28 | 2018-12-28 | A kind of method that constant pressure hydro-thermal prepares bagasse charcoal |
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| CN109650370A true CN109650370A (en) | 2019-04-19 |
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ID=66117942
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| CN201811630000.4A Pending CN109650370A (en) | 2018-12-28 | 2018-12-28 | A kind of method that constant pressure hydro-thermal prepares bagasse charcoal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828277A (en) * | 2021-10-28 | 2021-12-24 | 重庆科技学院 | Modified biochar and preparation method and application thereof |
| CN116832771A (en) * | 2023-05-12 | 2023-10-03 | 深圳共田生态环境有限公司 | Preparation method of artificial wetland filler bagasse biochar and biochar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904589A (en) * | 2017-04-07 | 2017-06-30 | 华侨大学 | A kind of hydro-thermal method prepares method and the application of bagasse Carbon Materials |
-
2018
- 2018-12-28 CN CN201811630000.4A patent/CN109650370A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904589A (en) * | 2017-04-07 | 2017-06-30 | 华侨大学 | A kind of hydro-thermal method prepares method and the application of bagasse Carbon Materials |
Non-Patent Citations (3)
| Title |
|---|
| 张求慧等: ""我国生物质废料液化及产物利用的研究进展"", 《林产化学与工业》 * |
| 罗立文等: "《高等学校教材 大学化学》", 30 September 2017 * |
| 赵广荣等: "《现代生命科学与生物技术》", 31 October 2008 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828277A (en) * | 2021-10-28 | 2021-12-24 | 重庆科技学院 | Modified biochar and preparation method and application thereof |
| CN116832771A (en) * | 2023-05-12 | 2023-10-03 | 深圳共田生态环境有限公司 | Preparation method of artificial wetland filler bagasse biochar and biochar |
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| CB03 | Change of inventor or designer information |
Inventor after: Song Hainong Inventor after: Wei Wenhui Inventor after: Luo Chunfeng Inventor after: Huang Fuming Inventor after: Lin Bingmei Inventor after: Chen Guoning Inventor after: Yang Qifeng Inventor after: Liu Yang Inventor after: Liao Changjun Inventor after: Jiang Linling Inventor after: Lin Hongfei Inventor after: Ning Yi Inventor after: Zhan Biman Inventor before: Song Hainong Inventor before: Luo Chunfeng Inventor before: Huang Fuming Inventor before: Lin Bingmei Inventor before: Chen Guoning Inventor before: Yang Qifeng Inventor before: Liao Changjun Inventor before: Jiang Linling Inventor before: Lin Hongfei Inventor before: Ning Yi Inventor before: Zhan Biman Inventor before: Wei Wenhui |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20190419 |