CN101787315A - Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks - Google Patents
Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks Download PDFInfo
- Publication number
- CN101787315A CN101787315A CN201010107878A CN201010107878A CN101787315A CN 101787315 A CN101787315 A CN 101787315A CN 201010107878 A CN201010107878 A CN 201010107878A CN 201010107878 A CN201010107878 A CN 201010107878A CN 101787315 A CN101787315 A CN 101787315A
- Authority
- CN
- China
- Prior art keywords
- cotton stalk
- core
- cotton
- fuel
- stalk core
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention belongs to the technical field of biomass fuel and preparation thereof, and particularly discloses cotton stalk core biomass compression fuel. In the fuel, the cotton stalk core content is 85 to 90 percent, the compressed density of the fuel is 1,100 to 1,400kg/m<3>, the relaxed density is 700 to 900kg/m<3>, and the water content is 8 to 12 percent. The preparation method comprises the following steps of: using the cotton stalks, of which the water content is below 12 percent, as a raw material; performing separating treatment by a cotton stalk skin-core separating machine; crushing the separated cotton stalk cores; molding the cotton stalk cores by compression under a pressure of 70 to 100MPa; and performing cooling and packaging to obtain the finished products, wherein the byproducts of cotton stalk skin obtained by separation can also be used for spinning and paper-making, so that the comprehensive utilization of the cotton stalks is realized. The cotton stalk core biomass compression fuel has the advantages of high heat efficiency, low ash content, little pollution, no damage to a boiler, convenient transportation and storage and the like; and the process method has the advantages of high process efficiency, low equipment cost, low production cost, good product quality and the like.
Description
Technical field
The present invention relates to a kind of solid fuel and the preparation and the method for comprehensive utilization of a plant material, relate in particular to a kind of method of comprehensive utilization of solid fuel and preparation and a kind of agricultural crop straw based on plant material.
Background technology
Cotton is annual half xylophyta.Cotton stalk (hereinafter to be referred as cotton stalk) is meant the cotton stalk that removes leaf, root and cotton boll.Cotton stalk is made of cotton stalk skin and cotton stalk core two portions, and its middle cotton stalk skin accounts for 25%, and cotton stalk core accounts for 75%.From the biomass technical analysis of cotton stalk, moisture 6.87%, ash content 3.97%, volatile matter 68.54%, fixed carbon 20.71%.Low many (as straw are 13.86%, and wheat straw is 8.9%) of other agricultural crop straws of ash rate of cotton stalk, the ash content of cotton stalk and the willow of broad-leaf forest are approaching, and the heat that ash content produces at least is many, incendiary temperature height.The fixed carbon of cotton stalk is 20.71%, exceeds other agricultural crop straw, even is higher than timber such as poplar, willow, pine, and high anti-more burning of biomass of fixed carbon content, calorific value is higher.The volatile matter of cotton stalk is similar with other agricultural crop straws.From the chemical property of cotton stalk, under the natural air drying state, its superior calorific value 17.37MJ/kg, Lower heat value is 15.99MJ/kg, also is higher than other agricultural crop straws.From the physical properties of cotton stalk, its bulk density is 63kg/m
3, than other agricultural crop straw height.The physical strength of cotton stalk, the thermal conductivity of cotton stalk all are higher than other agricultural crop straws.From above analysis as seen, cotton stalk is compared with other agricultural crop straws, is a kind of biomass fuel preferably.
At present for cotton stalk in the utilization of biomass energy, mainly be that it is pulverized fuel as Industrial Boiler, as utilize the direct combustion power generation of cotton stalk, heating etc.Because cotton stalk in constructional feature, directly uses as boiler oil, has following problem and difficulty: first, cotton stalk is the same with other agricultural crop straws, and density is little, volume is big, brings many difficulties to its collection, transportation, storage, as the transportation cost height, to store and take up an area of greatly, fire protection expense is big; The second, boiler plant is required than higher; Cotton stalk is the same with other agricultural crop straws, and moisture and volatile matter are higher, and calorific value, ash content fusing point are lower, and ash content can cohere the big clinker that becomes to be difficult to eliminate after at high temperature becoming molten state, and alkali metal content is higher in the while stalk, easily boiler is caused corrosion; The 3rd, because cotton stalk equally has the low defective of calorific value with other stalks, improve the capacity that thermo-efficiency then must add cauldron, while fuel delivery system complex structure, the technical requirements height, China's existing macro-organism matter generating set all needs import, and price is relatively costly, this also causes the existing enterprise that does the fuel generating that directly cotton stalk pulverized of China to be in lossing state mostly, its reason just because of the initial stage of founding the factory have high input, generatine set heat efficiency is low, fuel cost is high; The 4th, the direct pulverizing of cotton stalk made fuel, do not take into full account the different characteristics and the function of cotton stalk different sites, be unrealized and make the best use of everything, especially this valuable industrial production material combusting of cotton stalk skin is fallen, wasted resource; The 5th, because the existence of cotton stalk middle cotton stalk skin phloem fiber, this also makes cotton stalk pulverize comparatively difficulty, is difficult to compressed moulding.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of thermo-efficiency height, ash content few, pollute less, cost is low, little and be convenient to the cotton stalk core biomass compression fuel that transports and store to the boiler infringement, also correspondingly provide the preparation method that a kind of process efficiency height, good product quality, production cost are low, equipment drops into little cotton stalk core biomass compression fuel, a kind of energy-saving and emission-reduction also are provided, can improve the method for comprehensive utilization of the cotton stalk of waste resource comprehensive utilization ratio greatly.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of cotton stalk core biomass compression fuel, it is characterized in that: described biomass compression fuel middle cotton stalk core content is 85%～90%, the length of described cotton stalk core is below 5mm, and the pressed density of described biomass compression fuel is 1100～1400kg/m
3, the lax density of described biomass compression fuel is 700～900kg/m
3The water ratio of described biomass compression fuel is 8%～12%.
As a total technical conceive, the present invention also provides a kind of preparation method of cotton stalk core biomass compression fuel, may further comprise the steps: is raw material with water ratio at the cotton stalk below 12%, adopt the cotton stalk skin-core separating machine that the cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment (the skin-corn separation rate generally will reach more than 90%), the cotton stalk core of the particle shape that obtains after separating is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100MPa, cool off after the compressed moulding, packing (generally being cooled to get final product below 30 ℃) obtains being convenient to the cotton stalk core biomass compression fuel of storing and transporting.
As a total technical conceive, the present invention also provides a kind of method of comprehensive utilization of cotton stalk, may further comprise the steps: is raw material with water ratio at the cotton stalk below 12%, adopt the cotton stalk skin-core separating machine that the cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment (the skin-corn separation rate generally will reach more than 90%), obtain cotton stalk core of particle shape and banded cotton stalk skin (the pure rate of cotton stalk core generally also will reach more than 90%) after the separation; To carry out the follow-up processing of coming unstuck after the described cotton stalk skin arrangement, the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is as the raw material of textile industry, and the cotton stalk mulberry paper slurry after the processing is as the paper raw material; Simultaneously described cotton stalk core is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100MPa, cool off, pack (generally being cooled to get final product below 30 ℃) after the compressed moulding, obtain being convenient to the cotton stalk core biomass compression fuel of storing and transporting.
The proposition of above-mentioned each technical scheme is for a long time to the research of cotton stalk structure and composition based on us.Cotton stalk can obtain cotton stalk skin and cotton stalk core after handling through appropriate separation.Cotton stalk skin cellulose 42.2%, hemicellulose 18.11%, xylogen 18.95%, mean fibre length 2.26mm, long-width ratio is 113, wall chamber ratio is 2.7, flexibility factor is 20.9, as seen cotton stalk skin comes down to a kind of fine pulp production raw material, and the cotton stalk mulberry paper slurry after the processing can be used for producing products such as kraft paper, jute paper, cardboard.Cotton stalk skin generates cotton stalk hide fiber after coming unstuck, the physical and mechanical properties index of cotton stalk hide fiber is: fiber fineness 1.86tex, breaking tenacity 42.53CN/tex, elongation at break 4.18%, standard moisture regain 9.68%.As seen, cotton stalk hide fiber is a kind of phloem fiber, and the characteristic that it has bast-fibre is a kind of fine textile raw material.The content of lignin higher (being 21.19%) of cotton stalk core, it helps the splicing between the shaped fuel particle, improves the cohesive strength of forming blocks; And the ash content of cotton stalk core is 1.56%, is lower than cotton stalk skin (about 5.32%), and thermo-efficiency is higher; Do not contain cured matter in the cotton stalk core simultaneously, do not contain basic metal, this has all reduced the erosion of fuel to boiler systems.Therefore, the present invention has taken into full account the structural constituent and the characteristics thereof of cotton stalk, and reclaim, fully utilize, turn waste into wealth in the classification that has truly realized cotton stalk, improved the added value of cotton stalk greatly, this has overcome also for a long time that people directly make cotton stalk the as a whole all drawbacks that occurred of pulverizing, reclaim, utilize, and has improved the comprehensive utilization ratio of agricultural straw resource greatly.
Cotton stalk skin-core separating machine in the technique scheme preferably adopts disclosed cotton stalk skin-core separating machine in the CN200996061Y Chinese patent literature, its mechanize that not only can successfully realize cotton stalk skin and cotton stalk core separates, and can guarantee the pure rate of the separation rate and the product of cotton stalk skin-core better.Consider that the isolating processing request of cotton stalk skin-core reaches later separation product quality requirements, we require the water content requirement of cotton stalk raw material below 12%, can be in dry area with the direct natural air drying of cotton stalk to this water ratio, other areas can adopt ordinary method that cotton stalk is carried out drying treatment.Generally isometric through cotton stalk skin and cotton stalk after the cotton stalk skin-core separation, be about 40～60cm, and become straight band shape, and the cotton stalk core after separating becomes the particle shape, length is about 5～30mm.
In the above-mentioned method, described compressed moulding step preferably adopts normal temperature compressed moulding process, hot press forming technology or preheating compressing and forming process.
In the above-mentioned method, described normal temperature compressed moulding process preferably is meant and utilizes biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 15%～20% before the moulding, forming pressure preferably is controlled at 80～100MPa, compression time is controlled at 8～10s, and the water ratio of product is 8%～12% after the moulding.
In the above-mentioned method, described hot press forming technology preferably is meant and utilizes biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 12%～15% before the moulding, forming pressure preferably is controlled at 70～75MPa, simultaneously mold for forming is heated during moulding, make cotton stalk core temperature wherein be controlled at 140 ℃～170 ℃, hot pressing time is controlled at 40～50s, and the water ratio of product is 8%～12% after the moulding.In hot-forming, the xylogen in the cotton stalk core is when temperature rises to 160 ℃, and the beginning fusion forms colloidalmaterial, has played the function of tackiness agent.Hot press forming technology can also make the carbonization of product outer surface, strengthens its anti-dropping fragility and water permeability resistance.
In the above-mentioned method, cotton stalk core after described preheating compressing and forming process preferably is meant and will pulverizes earlier places a preheater to heat, the cotton stalk core water ratio of control is 12%～15% before the preheating, preheating temperature is 140 ℃～170 ℃, then the cotton stalk core after the preheating is sent in the mold for forming, utilize biomass forming machine to be pressed into cotton stalk core granular simultaneously, bar-shaped or block, forming pressure preferably is controlled at 70～75Mpa, the temperature of described mold for forming preferably is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30～40s, and the water ratio of product is 8%～12% after the moulding.
In above-mentioned preferred three kinds of compressing and forming process, according to cotton stalk core machining characteristics, most preferably adopt the preheating compressing and forming process, in this preheating compressing and forming process, make the xylogen in the cotton stalk core when being preheating to 160 ℃, begin fusion formation colloidalmaterial earlier, played the function of tackiness agent; Subsequently hot-forming makes the carbonization of product outer surface, strengthened its anti-dropping fragility and water permeability resistance; Simultaneously because cotton stalk core raw material has been carried out preheating, in subsequent thermal is molded, reduced the rubbing effect of cotton stalk core raw material and mold for forming, not only can reduce the compressed moulding time (under the situation of same pressure), improve the working efficiency of described biomass forming machine, but also can prolong the work-ing life of mold for forming.
Compared with prior art, the invention has the advantages that:
1, the present invention at first provides a kind of clean fuel of standard type.Cotton stalk core biomass compression fuel of the present invention is a kind of have specified shape (according to customer need), solid fuel that density is bigger, its thermo-efficiency height, ash content is few, pollute few, harmless to boiler, and be convenient to transportation and storage, development green energy resource, clean energy and enforcement energy-saving and emission-reduction are all had important practical sense.
2, cotton stalk core biomass compression fuel of the present invention more helps the production domesticization of boiler, effectively reduces the production unit cost and the early investment of enterprise.Characteristics such as common biomass fuel is low owing to calorific value, volume is little, ash fusion point is low, to the requirement height of boiler and raw material conveying feeding system thereof, this biomass fuel generating set that causes China costs an arm and a leg all mainly from external import, construction investment is big, the maintenance of equipment difficulty.And cotton stalk core biomass compression fuel of the present invention is as the bigger solid molding fuel of density, can replace coal to be used as the fuel of general industry boiler, and owing to do not contain cotton stalk skin in the fuel, ash oontent in the fuel is reduced to about 1.56% by original 4.7%, reduced erosion to boiler plant, coal firing boiler is just transformed a little can use biomass compression fuel of the present invention, and this has created favourable condition for the production domesticization of China's biomass fuel boiler equipment.
3, method of the present invention has improved the added value of cotton stalk greatly, and the Application Areas of product is widened greatly.Method of the present invention is cotton stalk skin to be separated with cotton stalk core in advance again utilize, cotton stalk core is used to produce biomass compression fuel, this cotton stalk core biomass compression fuel not only can be as the fuel of Industrial Boiler, also can be widely used in rural area heating, hot water service, booth intensification and agricultural byproducts oven dry etc., also carbonizing treatment be can make, wooden carbon and activated carbon etc. produced.The cotton stalk skin that obtains simultaneously then can be used for weaving or produces the raw materials for production of paper pulp, and this makes the added value of cotton stalk increase greatly.
4, method of the present invention efficiently solves directly cotton stalk to be pulverized and makes the variety of issue that fuel exists, owing to carried out the skin-corn separation processing in advance, this makes follow-up pulverizing, the compressed moulding of cotton stalk all be more prone to, and has shortened the process time greatly, has improved production efficiency and quality product.
5, economic benefit of the present invention is obvious, has improved the profitability of enterprise greatly.We are example with one ton of cotton stalk, its purchasing price is 200 yuan, can produce cotton stalk skin 250kg and cotton stalk core 750kg, as pulpwood, the price of the cotton stalk skin of 250kg is 500 yuan (cotton stalk skin is about 2000 yuan/ton as the purchasing price of pulpwood), and be about 100 yuan/ton according to the cost of technology separation of the present invention, the cotton stalk skin of production, therefore the incremental benefit of byproduct can significantly reduce the production cost of shaped fuel, add the fiscal subsidy of country to stalk class Energy production enterprise, this type of enterprise can really realize making a profit instead of suffering a loss.
Embodiment
Embodiment 1:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the advanced sector-style of cotton stalk that will remove cotton root, cotton leaf and cottonseed is done, air-dry to water content below 12%, guarantee the fragility of cotton stalk, be easy to fracture, prepare for next step cotton stalk skin-core separates;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, processing back skin-corn separation rate reaches more than 90%, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 90%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the raw material of production scene as textile and paper;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to length below 5mm;
5, normal temperature compressed moulding: the water ratio of the cotton stalk core raw material after will pulverizing is controlled at 20%, adopts the machining of normal temperature shaped by fluid pressure, and forming pressure is 85MPa, forming mould is Φ 100X100mm, compression time is 8～10s, and every compressed fuel weighs 4.8～6kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
The content of the cotton stalk core biomass compression fuel middle cotton stalk core that the process above-mentioned steps is produced is 85%～90%, and the length of cotton stalk core is below 5mm, and the pressed density of compressed fuel is 1400kg/m
3, lax density is 840kg/m
3, water ratio is about 10%, and the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Embodiment 2:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the advanced sector-style of cotton stalk that will remove cotton root, cotton leaf and cottonseed is done, air-dry to water content below 12%, guarantee the fragility of cotton stalk, be easy to fracture, prepare for next step cotton stalk skin-core separates;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, processing back skin-corn separation rate reaches more than 90%, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 90%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the raw material of production scene as textile and paper;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to below the length 5mm;
5, hot-forming: the water ratio of the cotton stalk core raw material after will pulverizing is controlled at 15%, adopt biomass forming machine and hot press forming technology to process, be when cotton stalk core raw material pressurizes in mold for forming, mould is carried out electrically heated, die temperature is controlled at 230 ℃～270 ℃, make the cotton stalk in-core portion temperature in the mould reach 140 ℃～170 ℃, forming pressure is 70MPa, the hot pressing time of every briquette fuel is 40s, forming mould is Φ 140X120mm, every compressed fuel weighs 12～16kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
The content of the cotton stalk core biomass compression fuel middle cotton stalk core that the process above-mentioned steps is produced is 85%～90%, and the length of cotton stalk core is below 5mm, and its pressed density is 1200kg/m
3, its lax density is 790kg/m
3, water ratio is about 10%, and the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Embodiment 3:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the cotton stalk that will remove cotton root, cotton leaf and cottonseed carries out drying earlier, is dried to water content below 12%, guarantees the fragility of cotton stalk, is easy to fracture, for next step cotton stalk skin-core separation is prepared;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, processing back skin-corn separation rate reaches more than 90%, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 95%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the raw material of production scene as textile and paper; Cotton stalk mulberry paper slurry after wherein handling is used to produce board product, and the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is used for the raw material of textile industry;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to below the length 5mm;
5, preheating compressed moulding: the water ratio of the cotton stalk core raw material after will pulverizing is controlled at 15%, before raw material enters the biomass forming machine compression, cotton stalk core after will pulverizing earlier places a preheater with electric heating or fuel Heating, preheating temperature is 140 ℃～170 ℃, make xylogen contained in the cotton stalk core softening, play the effect of cakingagent; Then the cotton stalk core after the preheating is sent in the mold for forming, utilize biomass forming machine to be pressed into cotton stalk core bar-shaped simultaneously, forming pressure is controlled at 70MPa, the temperature of mold for forming is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30s, forming mould is Φ 140X120mm, and every compressed fuel weighs 12～16kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
The content of the cotton stalk core biomass compression fuel middle cotton stalk core that the process above-mentioned steps is produced is 85%～90%, and the length of cotton stalk core is below 5mm, and the pressed density of this biomass compression fuel is 1150kg/m
3, lax density is 770kg/m
3, water ratio is 10%, the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Claims (7)
1. cotton stalk core biomass compression fuel, it is characterized in that: described biomass compression fuel middle cotton stalk core content is 85%～90%, and the length of described cotton stalk core is below 5mm, and the pressed density of described biomass compression fuel is 1100～1400kg/m
3, the lax density of described biomass compression fuel is 700～900kg/m
3The water ratio of described biomass compression fuel is 8%～12%.
2. the preparation method of a cotton stalk core biomass compression fuel, may further comprise the steps: is raw material with water ratio at the cotton stalk below 12%, adopt the cotton stalk skin-core separating machine that the cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment, the cotton stalk core of the particle shape that obtains after separating is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100MPa, cool off after the compressed moulding, pack, obtain cotton stalk core biomass compression fuel.
3. the method for comprehensive utilization of a cotton stalk, may further comprise the steps: is raw material with water ratio at the cotton stalk below 12%, adopt the cotton stalk skin-core separating machine that the cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment, obtain cotton stalk core of particle shape and banded cotton stalk skin after the separation; To carry out the follow-up processing of coming unstuck after the described cotton stalk skin arrangement, the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is as the raw material of textile industry, and the cotton stalk mulberry paper slurry after the processing is as the paper raw material; Simultaneously described cotton stalk core is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, the pressure-controlling during compressed moulding is cooled off after the compressed moulding, is packed at 70～100MPa, obtains cotton stalk core biomass compression fuel.
4. according to claim 2 or 3 described methods, it is characterized in that: described compressed moulding step is to adopt normal temperature compressed moulding process, hot press forming technology or preheating compressing and forming process.
5. method according to claim 4, it is characterized in that: described normal temperature compressed moulding process is meant and utilizes biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 15%～20% before the moulding, forming pressure is controlled at 80～100MPa, compression time is controlled at 8～10s, and the water ratio of product is 8%～12% after the moulding.
6. method according to claim 4, it is characterized in that: described hot press forming technology is meant and utilizes biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 12%～15% before the moulding, forming pressure is controlled at 70～75MPa, simultaneously mold for forming is heated during moulding, make cotton stalk core temperature wherein be controlled at 140 ℃～170 ℃, hot pressing time is controlled at 40～50s, and the water ratio of product is 8%～12% after the moulding.
7. method according to claim 4, it is characterized in that: the cotton stalk core after described preheating compressing and forming process is meant and will pulverizes earlier places a preheater to heat, the cotton stalk core water ratio of control is 12%～15% before the preheating, preheating temperature is 140 ℃～170 ℃, then the cotton stalk core after the preheating is sent in the mold for forming, utilize biomass forming machine to be pressed into cotton stalk core granular simultaneously, bar-shaped or block, forming pressure is controlled at 70～75MPa, the temperature of described mold for forming is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30～40s, and the water ratio of product is 8%～12% after the moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107878 CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107878 CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787315A true CN101787315A (en) | 2010-07-28 |
| CN101787315B CN101787315B (en) | 2013-01-09 |
Family
ID=42530697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010107878 Expired - Fee Related CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101787315B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021059A (en) * | 2010-12-10 | 2011-04-20 | 华北电力大学 | Forming method for modifying biomass fuel by rapid thermal treatment process |
| CN103131437A (en) * | 2011-11-25 | 2013-06-05 | 仇峰 | Manufacturing method of solid bamboo charcoal in compression molding mode |
| CN103717715A (en) * | 2011-06-03 | 2014-04-09 | Mph能源有限责任公司 | Systems and methods for producing engineered fuel feed stocks from waste material |
| US9217188B2 (en) | 2008-06-26 | 2015-12-22 | Accordant Energy, Llc | System and method for integrated waste storage |
| CN108998140A (en) * | 2018-08-21 | 2018-12-14 | 芜湖聚焰生物质能源科技有限公司 | A kind of compression process of biomass fuel |
| CN109082323A (en) * | 2018-08-21 | 2018-12-25 | 芜湖聚焰生物质能源科技有限公司 | A kind of preparation method of biomass fuel |
| CN110205176A (en) * | 2019-04-29 | 2019-09-06 | 天津大学 | A kind of corn stover solid molding fuel preparation method based on skin stalk splitter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263907A (en) * | 2004-03-17 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Woody solid fuel |
| CN101085939A (en) * | 2006-06-07 | 2007-12-12 | 北京盛昌绿能科技有限公司 | Biomass composite solid forming fuel and preparation method thereof |
| CN200996061Y (en) * | 2007-01-24 | 2007-12-26 | 凌受明 | Cotton-stalk skin-core separater |
| CN101230491A (en) * | 2007-01-24 | 2008-07-30 | 凌受明 | Cotton stalk skin-core mechanical separation method and special equipment |
-
2010
- 2010-02-10 CN CN 201010107878 patent/CN101787315B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263907A (en) * | 2004-03-17 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Woody solid fuel |
| CN101085939A (en) * | 2006-06-07 | 2007-12-12 | 北京盛昌绿能科技有限公司 | Biomass composite solid forming fuel and preparation method thereof |
| CN200996061Y (en) * | 2007-01-24 | 2007-12-26 | 凌受明 | Cotton-stalk skin-core separater |
| CN101230491A (en) * | 2007-01-24 | 2008-07-30 | 凌受明 | Cotton stalk skin-core mechanical separation method and special equipment |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9217188B2 (en) | 2008-06-26 | 2015-12-22 | Accordant Energy, Llc | System and method for integrated waste storage |
| US10519389B2 (en) | 2008-06-26 | 2019-12-31 | Accordant Energy, Llc | System and method for integrated waste storage |
| US9765269B2 (en) | 2008-06-26 | 2017-09-19 | Accordant Energy, Llc | System and method for integrated waste storage |
| CN102021059B (en) * | 2010-12-10 | 2013-07-31 | 华北电力大学 | Forming method for modifying biomass fuel by rapid thermal treatment process |
| CN102021059A (en) * | 2010-12-10 | 2011-04-20 | 华北电力大学 | Forming method for modifying biomass fuel by rapid thermal treatment process |
| US9650584B2 (en) | 2011-06-03 | 2017-05-16 | Accordant Energy, Llc | Systems and methods for producing engineered fuel feed stocks from waste material |
| US9162231B2 (en) | 2011-06-03 | 2015-10-20 | Accordant Energy, Llc | Systems and methods for producing engineered fuel feed stocks from waste material |
| CN103717715A (en) * | 2011-06-03 | 2014-04-09 | Mph能源有限责任公司 | Systems and methods for producing engineered fuel feed stocks from waste material |
| US9879195B2 (en) | 2011-06-03 | 2018-01-30 | Accordant Energy, Llc | Systems and methods for processing a heterogeneous waste stream |
| US10626340B2 (en) | 2011-06-03 | 2020-04-21 | Accordant Energy, Llc | Systems and methods for producing engineered fuel feed stocks from waste material |
| CN103131437A (en) * | 2011-11-25 | 2013-06-05 | 仇峰 | Manufacturing method of solid bamboo charcoal in compression molding mode |
| CN108998140A (en) * | 2018-08-21 | 2018-12-14 | 芜湖聚焰生物质能源科技有限公司 | A kind of compression process of biomass fuel |
| CN109082323A (en) * | 2018-08-21 | 2018-12-25 | 芜湖聚焰生物质能源科技有限公司 | A kind of preparation method of biomass fuel |
| CN110205176A (en) * | 2019-04-29 | 2019-09-06 | 天津大学 | A kind of corn stover solid molding fuel preparation method based on skin stalk splitter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101787315B (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101787315B (en) | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks | |
| Bhattacharya et al. | State of the art for biomass densification | |
| CN102191101B (en) | Production method of biomass moulded coal | |
| JP2017075318A (en) | Method for production of pellets or briquettes | |
| CN101157873A (en) | Biological energy source modeling coal and production technique | |
| CN102021059B (en) | Forming method for modifying biomass fuel by rapid thermal treatment process | |
| CN104845696B (en) | Method for preparing biomass pellet fuel by mulberry branch fermentation wastes | |
| CN101979478A (en) | Method for preparing biofuel | |
| US10329505B2 (en) | Method for producing biofuel and use of biofuel | |
| CN102161926A (en) | Biomass carbon-based briquetted coal for replacing fossil fuel and production process thereof | |
| CN103074137A (en) | Continuous production method of biomass fuel blocks | |
| CN101497836A (en) | Organic waste solid moulding fuel and production method thereof | |
| CN103602359A (en) | Mixed biomass briquette fuel and forming method thereof | |
| CN101422750A (en) | Novel coal crushing method | |
| CN101824348B (en) | Method for preparing biomass compact fuel with rubber seed hull | |
| JP3223767U (en) | Wood fuel pellet manufacturing equipment | |
| CN103131499A (en) | Black liquid bamboo charcoal and manufacturing method thereof | |
| CN107236560B (en) | Process for coking molding material containing low-rank coal, garbage and biomass | |
| CN105861567A (en) | Method for producing high-heating-value biomass fuel from agricultural and forestry wastes | |
| CN108192679B (en) | Briquette and its preparation method and use | |
| CN112211022A (en) | Method and device for fibering straw by hot pressing method | |
| CN103131495B (en) | Hot compression plasticizing molding charcoal and manufacturing method thereof | |
| CN110964581A (en) | Post-forming biomass fuel production method | |
| CN103255660A (en) | Process for extracting of bamboo fibers | |
| CN105199802B (en) | A kind of production method of Chinese chestnut thorn bag biomass molding fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20220210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |