CN104724695A - Preparation method of bamboo biochar - Google Patents
Preparation method of bamboo biochar Download PDFInfo
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- CN104724695A CN104724695A CN201510123281.4A CN201510123281A CN104724695A CN 104724695 A CN104724695 A CN 104724695A CN 201510123281 A CN201510123281 A CN 201510123281A CN 104724695 A CN104724695 A CN 104724695A
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Abstract
The invention discloses a preparation method of bamboo biochar. The preparation method has the beneficial effects that bamboo wastes serve as raw materials for preparation of biochar and the bamboo materials are transformed into biochar through hydrothermal reaction, thus providing a new bamboo material utilizing mode, increasing the comprehensive utilization rates of the bamboo materials and the economic benefits and increasing the additional value; the preparation method is clean and green in processes, is simple to operate, conduces to achieving cyclic utilization of resources, is beneficial to carbon fixation and reduction of emission of carbon dioxide and has good ecological benefits; besides, the method is low in energy consumption and cost, has good industrial application prospects and can achieve sink increase and emission reduction; the prepared product can be also applied to improving soil and restoring the water environment and has extensive application prospects.
Description
Technical field
The present invention relates to charcoal preparing technical field, especially a kind of preparation method of bamboo charcoal.
Background technology
Charcoal (biochar) refers to the stable rich carbon solid that biomass are formed under anoxic or oxygen free condition.Research shows, in soil, add charcoal, can carry and improve soil fertility, promotes crop growth, and meanwhile, charcoal uses the release that can suppress greenhouse gases in soil, reduces the diffusion of agricultural chemicals in soil and the accumulation in animal and plant body.In addition, charcoal has adsorption to pollutent, adds charcoal and can improve water quality, repair water pollution in polluted-water.Therefore, abandoned biomass is carbonized into charcoal, be considered to a kind of method effectively consolidating carbon and biomass as resources.
The charring process of biomass can be divided into pyrolysis charring and hydro-thermal to carbonize two kinds.Wherein pyrolysis charring refers to that biomass are under an inert atmosphere, are heated to comparatively high temps, as 550 ~ 1300 DEG C, stay for some time thus occur carbonize method; Hydro-thermal charing is then medium with water, and in enclosed system, at a certain temperature, as 130 ~ 350 DEG C, water is from producing pressure or rare gas element adds pressure, and biomass, through complex reactions such as dehydration, decarboxylations, occur to carbonize the process changing into charcoal.Wherein, hydro-thermal charing directly can process the higher raw material of water ratio; Reaction medium is clean and reaction conditions is gentleer, and operation of equipment is easy, and contribute to retaining biological surface containing oxygen, nitrogen-containing functional group, be a kind of Perfected process preparing biological carbon materials of green.
Bamboo is the common renewable biomass resource of a class, and type is many, strong adaptability, is distributed widely in China and other Asia Southeast Asian countries, can be used for the industries such as building, papermaking, weaving, artwork, food, the energy.Bamboo have growth fast, become a useful person early, output high, after general afforestation 5-10, just can cut down utilization every year.In bamboo, main cellulose, hemicellulose and xylogen, be the desirable feedstock of charcoal processed.。The utilization of current bamboo, based on bamboo fibers, produces a large amount of wastes and residuum in the course of processing, not only cannot be fully used, and directly abandons the pollution that also can cause environment.
Based on above-mentioned consideration, the present invention proposes a kind of with bamboo waste for raw material adopts hydro-thermal charing to prepare the method for bamboo charcoal, aim to provide a kind of novel bamboo material recycle mode, decreasing pollution, improve bamboo added value, realize increasing converging and reduce discharging, obtained product also can be used for the reparation improveing soil or water body environment.
Summary of the invention
The invention provides a kind of preparation method of bamboo charcoal, technique is simple, improves comprehensive utilization ratio and the added value of bamboo, has good economic benefit, achieve energy-saving and emission-reduction.
For achieving the above object, the preparation method of bamboo charcoal of the present invention comprises the following steps:
By bamboo raw material pulverizing, mix with water, then import hydrothermal reaction kettle and carry out hydro-thermal carbonization reaction, the solid-to-liquid ratio of described bamboo raw material and water is 1kg:6L ~ 1kg:22L;
Cooled by the product of hydro-thermal carbonization reaction, filtering separation, obtains bamboo charcoal after drying.
Further, the pre-treatment step of bamboo raw material is also comprised: remove surperficial earth and foreign material.
Preferably, adopt medicinal herb grinder by bamboo raw material pulverizing.
Preferably, the temperature of reaction of described hydro-thermal carbonization reaction is 160
oc ~ 220
oc.
Preferably, the reaction times of described hydro-thermal carbonization reaction is 3h ~ 15 h.
Preferably, cooling temperature is 80
obelow C.
Preferably, filtering separation obtains the solid product that water ratio is 30 wt% ~ 40 wt%.
Preferably, described filtering separation adopts plate press filtration to carry out.
Further, drying step comprise solid product is placed in sunlight under dry, be then placed in baking oven and be dried to constant weight.
Preferably, described drying process temperature is 110 DEG C.
Beneficial effect of the present invention:
The invention provides a kind of preparation method of bamboo charcoal, comprising: by bamboo raw material pulverizing, mix with water, then import hydrothermal reaction kettle and carry out hydro-thermal carbonization reaction, the ratio of the described quality of bamboo raw material and the volume of water is 1kg:6L ~ 1kg:22L; Cooled by the product of hydro-thermal carbonization reaction, filtering separation, obtains bamboo charcoal after drying.Compared with prior art, it is charcoal that the present invention is carbonized bamboo converting feedstock by hydro-thermal, provide a kind of Land use systems of new bamboo material, improve utilization ratio and the added value of bamboo, add economic benefit, and be conducive to the discharge of the fixing of carbon element and minimizing carbonic acid gas, there is good ecological benefits and social benefit.In addition, in the present invention, bamboo raw material is without the need to pre-treatment, and hydro-thermal reaction medium is green, reaction conditions is gentle, and conversion unit structure is simple, easy and simple to handle, and less energy consumption, cost are low; Obtained bamboo charcoal product can be used for improvement soil or repairs water body environment, has a extensive future.
Accompanying drawing explanation
Fig. 1 is the process flow sheet that the embodiment of the present invention 1 prepares bamboo charcoal.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiments of the invention are described in detail.But should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment provides a kind of preparation method of bamboo charcoal, comprise the following steps:
By bamboo raw material pulverizing, mix with water, then import hydrothermal reaction kettle and carry out hydro-thermal carbonization reaction, the ratio of the described quality of bamboo raw material and the volume of water is 1kg:6L ~ 1kg:22L; Cooled by the product of hydro-thermal carbonization reaction, filtering separation, obtains bamboo charcoal after drying.
In technique scheme, present invention achieves the comprehensive utilization of bamboo material, improve added value, and energy carbon fixation and emission reduction, obtain the product that can be used for environmental pollution and repair, there is good economic benefit and social benefit.
Preferably, the present invention also comprises the pre-treatment step of bamboo raw material: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, removes raw material surface earth and foreign material.
Preferably, the present invention adopts medicinal herb grinder by bamboo raw material pulverizing, obtains feed particles, is conducive to carrying out hydro-thermal carbonization reaction with water.
Preferably, be that bamboo raw material within the scope of 1kg:6L ~ 1kg:22L and water import hydrothermal reaction kettle and carries out hydro-thermal carbonization reaction by quality, volume ratio, be specially: bamboo feed particles is mixed with water, import water heating kettle, airtight, guarantee the stopping property post-heating of water heating kettle.The temperature of reaction of described hydro-thermal carbonization reaction is preferably 160
oc ~ 220
oc, is more preferably 180
oc ~ 200
oc; The reaction times of described hydro-thermal carbonization reaction is preferably 3 h ~ 15 h, is more preferably 7 h ~ 11 h.
The present invention adopts hydro-thermal charring process to prepare bamboo charcoal, technique is simple, reaction temperature and, preparation process environmental protection and can the new way that utilizes of efficient extn bamboo material, has great importance for the utilization ratio and added value improving bamboo.
Preferably, below cooling water heat reactor to 80 DEG C, adopt plate press filtration to carry out filtering separation afterwards, filtering separation preferably water ratio is the solid product of 30 wt% ~ 40 wt%.
It is preferably, dry that preferably above-mentioned solid product is placed in baking oven is dried to constant weight.
Preferably, above-mentioned drying process temperature is 110 DEG C.
As can be seen from above scheme, the present invention utilizes bamboo for raw material, mixes after pretreatment be placed in water heating kettle with water, forms bamboo charcoal product through hydro-thermal charing.The method increase the comprehensive utilization ratio of bamboo, process environmental protection, consume energy low, achieve the recycle of carbon fixation and emission reduction and resource, there are obvious ecological benefits; In addition, this method cost is lower, improves the economic benefit of bamboo, and has good industrial applications prospect.
In order to understand the present invention further, be described in detail to technical scheme provided by the invention below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1:
As shown in Figure 1, bamboo charcoal is prepared in accordance with the following steps:
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 160
oc, reaction times 15 h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 2:
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 200
oc, reaction times 3 h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 3:
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 220
oc, reaction times 3 h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 4
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 180
oc, reaction times 15 h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 5
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 180
oc, reaction times 11h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 6
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 220
oc, reaction times 7 h, bamboo raw material and water solid-to-liquid ratio 1kg:6L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 7
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 220
oc, reaction times 15 h, bamboo raw material and water solid-to-liquid ratio 1kg:22L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 8
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 180
oc, reaction times 7 h, bamboo raw material and water solid-to-liquid ratio 1kg:10L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 9
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 200
oc, reaction times 7 h, bamboo raw material and water solid-to-liquid ratio 1kg:14L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 10
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 160
oc, reaction times 7 h, bamboo raw material and water solid-to-liquid ratio 1kg:18L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 11
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 200
oc, reaction times 11 h, bamboo raw material and water solid-to-liquid ratio 1kg:18L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 12
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 220
oc, reaction times 11 h, bamboo raw material and water solid-to-liquid ratio 1kg:10L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 13
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 200
oc, reaction times 15 h, bamboo raw material and water solid-to-liquid ratio 1kg:14L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
Embodiment 14
Step one, the recovery of bamboo raw material, pre-treatment: reclaim the discarded leaf of bamboo, bamboo powder and the bamboo pole relic or other bamboo processing wastes that produce in bamboo processing process, remove raw material surface earth and foreign material;
The pulverizing of step 2, bamboo raw material: by bamboo raw material pulverizing, obtain small-particle, stores, for subsequent use;
The hydro-thermal charing of step 3, bamboo raw material: mixed with water by bamboo particle, import water heating kettle, guarantee that water heating kettle is airtight, heating carries out hydro-thermal carbonization reaction, hydrothermal temperature 160
oc, reaction times 11 h, bamboo raw material and water solid-to-liquid ratio 1kg:22L;
The filtering separation of step 4, solid, liquid phase product: after hydro-thermal carbonization process terminates, takes out hydrothermal reaction kettle and is placed in water coolant, be cooled to 80
oafter below C, drive still and derive reaction solution and solid product, obtain the solid product that water ratio is 30 wt%-40 wt% after filtration;
The drying of step 5, solid product: solid product is placed in 110 DEG C, baking oven and is dried to constant weight, obtains solid-state bamboo charcoal product.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a preparation method for bamboo charcoal, is characterized in that, comprises the following steps:
By bamboo raw material pulverizing, mix with water, then import hydrothermal reaction kettle and carry out hydro-thermal carbonization reaction, the solid-to-liquid ratio of described bamboo raw material and water is 1kg:6L ~ 1kg:22L;
Cooled by the product of hydro-thermal carbonization reaction, filtering separation, obtains bamboo charcoal after drying.
2. preparation method as claimed in claim 1, is characterized in that, also comprise the pre-treatment step of bamboo raw material: remove surperficial earth and foreign material.
3. preparation method as claimed in claim 1, is characterized in that, adopts medicinal herb grinder by bamboo raw material pulverizing.
4. preparation method as claimed in claim 1, it is characterized in that, the temperature of reaction of described hydro-thermal carbonization reaction is 160
oc ~ 220
oc.
5. preparation method as claimed in claim 1, it is characterized in that, the reaction times of described hydro-thermal carbonization reaction is 3 h ~ 15 h.
6. preparation method as claimed in claim 1, it is characterized in that, cooling temperature is 80
obelow C.
7. preparation method as claimed in claim 1, it is characterized in that, filtering separation obtains the solid product that water ratio is 30 wt% ~ 40 wt%.
8. preparation method as claimed in claim 1, is characterized in that, described filtering separation adopts plate press filtration to carry out.
9. preparation method as claimed in claim 1, is characterized in that, drying step comprises and solid product is placed in baking oven is dried to constant weight.
10. preparation method as claimed in claim 1, it is characterized in that, described drying process temperature is 110 DEG C.
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| CN105819413A (en) * | 2016-03-18 | 2016-08-03 | 武汉大学 | High temperature molten salt method for preparing material with microscopic layered crystal structure |
| CN105883753A (en) * | 2016-06-03 | 2016-08-24 | 浙江科技学院 | Preparation method and application of bamboo shoot shell biochar |
| CN105948040A (en) * | 2016-04-26 | 2016-09-21 | 武汉大学 | Resource utilization method of pyrolyzing bamboo wood fused salt |
| CN106362693A (en) * | 2016-08-25 | 2017-02-01 | 扬州大学 | Pure rice bran based environment repairing material prepared hydrothermally and method therefor |
| CN108043445A (en) * | 2017-12-21 | 2018-05-18 | 江苏大学 | Protonate g-C3N4Wrap up the preparation and application of culm charcoal ball composite catalyst |
| CN110089359A (en) * | 2019-05-23 | 2019-08-06 | 浙江农林大学 | A kind of siliceous fertilizer and biomass carbon improve bamboo grove and plant silicon body organic C storage method |
| CN110918070A (en) * | 2019-12-20 | 2020-03-27 | 佛山科学技术学院 | Biochar-chitosan compound and preparation method and application thereof |
| CN113880069A (en) * | 2021-10-12 | 2022-01-04 | 国际竹藤中心 | Preparation method for efficiently synthesizing micron-sized bamboo cellulose-based carbon microspheres |
| CN114634217A (en) * | 2022-03-22 | 2022-06-17 | 山东大学 | Bamboo-based biochar adsorption column and method for treating printing and dyeing wastewater |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819413A (en) * | 2016-03-18 | 2016-08-03 | 武汉大学 | High temperature molten salt method for preparing material with microscopic layered crystal structure |
| CN105948040A (en) * | 2016-04-26 | 2016-09-21 | 武汉大学 | Resource utilization method of pyrolyzing bamboo wood fused salt |
| CN105948040B (en) * | 2016-04-26 | 2018-03-16 | 武汉大学 | A kind of bamboo wood fused salt is pyrolyzed resource utilization method |
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Application publication date: 20150624 |