CN103146452B - Production and process method for cornstalk cured fuel in cold region - Google Patents
Production and process method for cornstalk cured fuel in cold region Download PDFInfo
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- CN103146452B CN103146452B CN201310103824.7A CN201310103824A CN103146452B CN 103146452 B CN103146452 B CN 103146452B CN 201310103824 A CN201310103824 A CN 201310103824A CN 103146452 B CN103146452 B CN 103146452B
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- Prior art keywords
- cornstalk
- maize straw
- fuel
- ratio
- cold region
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- 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 discloses a production and process method for a cornstalk cured fuel in cold region, which belongs to the recycle technique of agricultural production wastes. The method comprises the following steps of: step 1, crushing the cornstalk in the cold region, wherein the crushed cornstalk is 22-25 cm long; step 2, spraying and stirring according to a ratio of the total weight of the crushed cornstalk in kilogram to the volume of biogas slurry after excrement of animals is fermented, wherein the ratio is 35:(0.9-1.1); step 3, covering the sprayed fragmented cornstalk obtained in step 2 by a plastic film, and placing the fragmented cornstalk in an environment at 15+/-5 DEG C for 2 hours, or under direct irradiation of sunshine in an environment at more than 0 DEG C for 2 hours; and step 4, pressing the fragmented cornstalk obtained in step 3 to obtain a cured fuel rod. The method disclosed by the invention scientifically and reasonably utilizes the own physicochemical properties of the cornstalk in cold region, finishes processing of cured fuel without adding any industrial adhesive additive, and has the characteristics of simple technical process, high curing rate, good mechanical property of the fuel rod, and environmental friendliness.
Description
Technical field
The invention belongs to rural and agricultural and produce waste reutilization technology, relate generally to a kind of processing method of extremely frigid zones maize straw being made to solid shaping fuel.
Background technology
Maize straw is one of important renewable energy source.From green energy resource angle, stalk accounts for critical role in energy consumption, and the stalks that China's consumption is every year equivalent to 200,000,000 tons of mark coals meet life energy needs.Due to only 18% left and right of cooking stove efficiency of combustion of peasant household, and straw solidification forming technique can make the efficiency of combustion of stalk reach 90%, higher 4 times than traditional efficiency of combustion.Research and extension that can quod vide technology can make biomass solid shaping fuel enter into quickly and easily Urban and rural area, replaces coal-fired, fuel oil, thereby changes significantly energy utilization structure.
From economic benefit angle, 1,000,000 tons of straw solidification shaped fuels of every use, 750,000 tons of alternative energy of coals, produce once form industrialization, and the energy that green bio matter fuel brings is huge.Every hundred million tons of biomass solid shaping fuels can be saved 0.7 hundred million tons of coals, and only this, be just equivalent to large colliery, 5 tafelberg.
From ecotope angle, biomass solid shaping technology can realize cleanburning, improves life of farmers quality and health level, improves look of a village village looks and living environment, and biomass molding fuel is " green energy resource " and " renewable energy source " cleaning, to CO
2reduction of discharging has very large realistic meaning.Can realize the multi-win of the energy, agricultural, ecology, meet the theory of developing a circular economy, meet protection of the environment, realize the needs of Sustainable development.
In sum, the curing molding of maize straw not only contributes to reduce transportation, handling, storage cost, and increases substantially its thermo-efficiency, reduces energy loss waste.But the most critical issue of cold ground maize straw solid shaping fuel is exactly that ratio of briquetting is low at present.The resistance to deformation of its solid shaping fuel, anti-dropping broken be the most important index of weighing product quality characteristic, directly affect that it uses, transportation and storing.Therefore, the ratio of briquetting of raising maize straw solid shaping fuel is the researcher key problem in science urgently to be resolved hurrily of being engaged in this aspect research always.Traditional maize straw curing molding is to carry out under 130 ℃ of temperature, forming pressure 135MPa high-temperature and high-pressure conditions, even under these conditions, is also difficult to guarantee the raising of maize straw solidification fuel ratio of briquetting in the situation that not adding tackiness agent.
Summary of the invention
Object of the present invention is exactly the problem existing for above-mentioned prior art, in conjunction with the actual needs of productive life, a kind of cold ground of research maize straw solid shaping fuel production and processing method, fully physics and the chemical property of cold ground of the utilization of science maize straw self, is issued in the condition of not adding any tackiness agent and reducing moulding temperature and pressure and increases substantially cold ground maize straw solid shaping fuel ratio of briquetting, reduces process for processing cost, guarantees the object of solid shaping fuel physical property.
The object of the present invention is achieved like this: a kind of cold ground maize straw solid shaping fuel production and processing method step is as follows:
(1) will tremble with fear ground maize straw pulverizer pulverize, the maize straw length after pulverizing is 22-25 centimetres; (2) rising volume ratio by the natural pond liquid after the maize straw kilogram gross weight after pulverizing and excrement of animals fermentation is 35:(0.9-1.1) spray and stir; (3) the broken maize straw plastics film obtaining in step (2) after natural pond liquid spray is covered, is seated in temperature and is in 15 ± 5 ℃ of environment 2 hours, or under direct sunlight, envrionment temperature more than 0 ℃ 2 hours; (4) maize straw step (3) being obtained obtains solid shaping fuel by press.
Cold ground maize straw is mainly made up of plant cell wall, and xylogen is besieged it ring upon ring Mierocrystalline cellulose and hemicellulose, and hemicellulose part covalency and xylogen combination; Mierocrystalline cellulose has high-sequential crystalline structure, is a kind of straight-chain polysaccharide, and multiple molecule parllels are arranged in thread insoluble micro fiber; Hemicellulose is mainly made up of wood sugar, a small amount of pectinose, semi-lactosi, seminose.With regard to can only carrying out every year taking turns the cold ground, Heilongjiang Province of farming, in cold ground maize straw, content of lignin is up to 12%.
Xylogen is the polymer aromatics of the composition take phenylpropyl alcohol alkane and derivative as fundamental unit, and contains various active functional group, as phenolic hydroxyl group, alcoholic extract hydroxyl group, methoxyl group, carboxyl and carbonyl etc.Non-ly in maize straw normal temperature extrusion molding process move freely cementing agent effect and be mainly reflected in noncrystal xylogen, after it is softening, also rearrange under external force position with Mierocrystalline cellulose tight bond.In straw solidification moulding process, xylogen has been played the part of in important binding agent and has been acted on, and forms viscous fluid together with other liquid composition, plays cohesive action solidification fuel is inner, has certain intensity and water-repellancy; So the multistage network structure bridge that biomass fiber forms and the existence of viscous fluid are biomass solid shaping and the key point with water-repellancy.
The present invention has reduced mold temperature and the pressure of cold ground maize straw solid shaping fuel, improve degree electric weight, solve the low problem of curing molding rate, after having solved excrement of animals fermentation, natural pond liquid is processed difficult problem more simultaneously, and in moulding process, cancel industrial adhesion additive, environmental protection, good in economic efficiency, its technological process is simple, and solid shaping fuel resistance to deformation, anti-dropping rate performance are good.
Embodiment
Below the embodiment of the present invention is described in detail.
embodiment 1:
Cold ground of single 47 3 kinds of first jade 335, eastern agriculture 253 and dragon corn to the plantation of Qinggang County, Heilongjiang Province carries out collected specimens, and acquisition time is mid-October.
Maize straw is put into pulverizer to be pulverized; be crushed to 22-25cm; it is that 35:1 sprays and stirs that maize straw kilogram gross weight after pulverizing and natural pond liquid after pure cattle manure are risen to volume ratio; after covering with plastics film sealing, be placed on after indoor 15 ± 5 ℃, 2 hours, get cylindrical shaped fuel piece with flat-die or ring mold pressing making mechanism.Record fuel brick water ratio 17 ~ 19%, density is 1390kg/m
3, shear strength is 45N, and shaped fuel 2kg is packed in plastics bag, then drop to cement flooring from eminence 2m, separate the fritter and the fine powder that produce due to lower drop impact, obtain these fragments and powder and the ratio <1% of crushed particles not, calorific value is 17800 kJ/kg.Along with taper is pressed hole and is caused the increase of forming pressure, stalk particle space reduces gradually and plastoelastic deformation occurs, the non-tackiness agent that moves freely in maize straw raw material has been brought into play stronger tackiness agent function in compressed moulding process, in moulding process, produce solid particulate bridge joint or bridge formation, improved the ratio of briquetting of solidification fuel; Simultaneously on perpendicular to principal direction of stress, particle is extended, adjacent particle is combined closely by the mode of engagement, be parallel on principal direction of stress, particle attenuation, adjacent particle is by the mode close contact of laminating, because stalk is elasticoplastic body, when occurring, after viscous deformation, no longer to return to original structure shape, it is more firm that between particle, the unrelieved stress of storage part makes the combination of particle.
embodiment 2:
Equally the cold ground maize straw in embodiment 1 being put into pulverizer pulverizes; be crushed to 22 ~ 25cm; it is that 35:1 sprays and stirs that maize straw kilogram gross weight after pulverizing and natural pond liquid after pure cattle manure are risen to volume ratio; cover with plastics film; after sealing, be placed on that 0 ℃ of place envrionment temperature is above, direct sunlight 2 hours; get cylindrical shaped fuel piece with flat-die or ring mold pressing making mechanism, record fuel brick water ratio 17 ~ 19%, density is 1421kg/m
3, shear strength is 42N, and shaped fuel 2kg is packed in plastics bag, then drop to cement flooring from eminence 2m, separate the fritter and the fine powder that produce due to lower drop impact, obtain these fragments and powder and the ratio <1% of crushed particles not, calorific value is 18100 kJ/kg.
embodiment 3:
Equally the cold ground maize straw in embodiment 1 being put into pulverizer pulverizes; be crushed to 22 ~ 25cm; it is that 35:1 sprays and stirs that maize straw kilogram gross weight after pulverizing and natural pond liquid after pure pig manure fermentation are risen to volume ratio; cover with plastics film; after sealing, be placed on after 15 ± 5 ℃, 2 hours of room temperatures; get cylindrical shaped fuel piece with flat-die or ring mold pressing making mechanism, record fuel brick water ratio 17 ~ 19%, density is 1479kg/m
3, shear strength is 39N, and shaped fuel 2kg is packed in plastics bag, then drop to cement flooring from eminence 2m, separate the fritter and the fine powder that produce due to lower drop impact, obtain these fragments and powder and the ratio <1% of crushed particles not, calorific value is 17050 kJ/kg.
Claims (1)
1. a cold ground maize straw solid shaping fuel production and processing method, is characterized in that: described method steps is as follows: (1) will tremble with fear maize straw pulverize, the maize straw length after pulverizing is 22-25 centimetre; (2) rising volume ratio by the natural pond liquid after the maize straw kilogram gross weight after pulverizing and excrement of animals fermentation is that 35:1 sprays and stirs; (3) the broken maize straw plastics film obtaining in step (2) after natural pond liquid spray is covered, is seated in temperature and is in 15 ± 5 ℃ of environment 2 hours, or under direct sunlight, envrionment temperature more than 0 ℃ 2 hours; (4) maize straw compacting step (3) being obtained obtains solid shaping fuel; It is 17-19% that the fuel brick that step (4) is obtained is surveyed its water ratio, and density is 1390kg/m
3, shear strength is 45N, and shaped fuel 2kg is packed in plastics bag, then drop to cement flooring from eminence 2m, separate the fritter and the fine powder that produce due to lower drop impact, obtain these fragments and powder and the ratio <1% of crushed particles not, calorific value is 17800 kJ/kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310103824.7A CN103146452B (en) | 2013-03-28 | 2013-03-28 | Production and process method for cornstalk cured fuel in cold region |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310103824.7A CN103146452B (en) | 2013-03-28 | 2013-03-28 | Production and process method for cornstalk cured fuel in cold region |
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| CN103146452A CN103146452A (en) | 2013-06-12 |
| CN103146452B true CN103146452B (en) | 2014-06-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105112118A (en) * | 2015-09-01 | 2015-12-02 | 滁州科菁生物科技有限公司 | Raw material pretreatment technology used for biomass fuel |
| CN109022085A (en) * | 2018-07-30 | 2018-12-18 | 深圳市心版图科技有限公司 | A kind of new bio clean fuel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101240205A (en) * | 2008-03-05 | 2008-08-13 | 华北电力大学 | Method for preparing formed fuel by using agriculture castoff |
| CN102344842A (en) * | 2010-08-03 | 2012-02-08 | 尚征 | Pretreatment machine for production of crop straw-formed fuel |
| CN102344843A (en) * | 2010-08-03 | 2012-02-08 | 尚征 | Crop straw briquettes fuel production line |
| CN102154048B (en) * | 2011-03-22 | 2014-05-14 | 江苏天意生物能源有限公司 | Pretreatment method for densifying rice and wheat straw solid briquette fuel |
| CN102250662A (en) * | 2011-06-07 | 2011-11-23 | 贵州省烟草公司毕节地区公司 | Method for producing shaped fuel from tobacco stalk biomass |
| CN202319012U (en) * | 2011-11-11 | 2012-07-11 | 江苏天意生物能源有限公司 | Rice and wheat straw solid fuel molding device |
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