CN102764611B - Straw pelleting process - Google Patents
Straw pelleting process Download PDFInfo
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- CN102764611B CN102764611B CN201210275647.6A CN201210275647A CN102764611B CN 102764611 B CN102764611 B CN 102764611B CN 201210275647 A CN201210275647 A CN 201210275647A CN 102764611 B CN102764611 B CN 102764611B
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Abstract
The invention belongs to the field of processing and application of straw and particularly relates to a straw pelleting process. The process mainly comprises the steps of 1), performing coarse grinding and feeding the ground straw into an ensiling pool to perform ensiling fermentation treatment; 2), drying to obtain ground straw with the water content of 9-15%; 3), performing fine grinding to obtain straw fiber with the particle size of 40-50 meshes per square inch and placing the straw fiber into a storage bin for storage through an air-assisted dust removal system; 4), pelleting, conveying the straw fiber to a ring die pelleting machine and performing compression molding by using a ring die and a compression roller to obtain rodlike straw particles with the density of 1-1.2g/cm3; and 5), performing cooling molding, placing the compressed straw particles into a cooler and cooling the straw particles to the room temperature through air cooling to obtain formed particles with smooth surfaces. According to the process, the straw is used fully, the pelleting effect is good, and the formed straw particles are smooth in surface and free from obvious cracks, are clean energy, can be used as base materials for culture of fungi or supplementary feed of livestocks and are convenient to popularize and apply in a large scale.
Description
Technical field
The present invention relates to a kind of stalk pelletizing technique, belong to the processed and applied field of stalk.
Background technology
Discarding maize straw due to rural area generally adopts chopping and returning process on the spot or harvesting to stack process, and during stacking, floor space is large, is difficult to deposit, easily brings potential safety hazard during dry weather; The stalk of also field process often affects again the sowing of wheat at northern area on the spot, and therefore some local mode of burning that usually adopts processes, but can cause a kind of huge pollution to air when burning, and is now prohibited.In order to utilize once again these stalks, some local comminutor that adopts carries out granulation to stalk.But the Main Ingredients and Appearance due to stalk is cellulose, hemicellulose and lignin; lignin is the structures alone with aromatic character; it is a kind of material of impalpable structure; be present in the lignified tissue of plant; when granulation; lignin in stalk is combined not tight with cellulose, therefore granulation outcome is bad, and easy appearance does not go out grain or can not continue the phenomenon of grain.Current stalk particle can meet mechanization, in enormous quantities, quantity-produced requirement without suitable moulding process.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: provide a kind of and can recycle stalk, stalk pelletizing technique that granulation density is high and effective, effectively solve stalk and store difficult problem, meet mechanization, in enormous quantities, quantity-produced requirement, alleviate the impact of stalk on environment simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: described stalk pelletizing technique, is characterized in that: comprise following processing step:
1. coarse crushing: shredded by stalk by hay cutter, obtains the crushing straw that length is 20 ~ 100mm, then enters silage silo and carries out silage fermentation process;
2. dry: the crushing straw after ensiling to be carried out drying process, obtain the crushing straw that water content is 9 ~ 15%;
3. fine powder is broken: dried crushing straw is carried out fine powder by pulverizer broken, and send dust pelletizing system to enter feed bin storage by wind, and obtaining granularity is 40 ~ 150 object stalk fibres;
4. granulation: stalk fibre is delivered to ring modeling pelletizer, adopt ring mould and pressure roller compressing, produce the temperature of 80 ~ 130 DEG C in pressing process and can make material slaking, obtaining density is 1 ~ 1.2g/cm
3stalk particle, particle is bar-shaped, and diameter is 8 ~ 10mm, and length is 20 ~ 50mm;
5. cooling forming: the stalk particle after compacting enters cooler, by wind cooling temperature lowering to room temperature, obtains smooth surface shaped granule.
Wherein: step 2. in drying mode method a lot, both can adopt natural drying, dryer can be adopted again to carry out pneumatic conveying drying, and in the present invention, adopt three-cylinder drier to carry out flue gas drying process.
In order to improve the crushing effect of crushing straw, step 3. in pulverizer adopt large-scale beater disintegrating machine.
Pack sale for convenience, described step 4. and step 5. between increase screening technology, the stalk particle after granulation is screened, obtains the stalk particle of size uniform, cool afterwards.
Stalk pelletizing is with good conditionsi, it is to the kind of raw material, granularity, moisture content has certain requirement, before granulation, need first to carry out suitable pulverizing to stalk, dry, because the lignin in stalk belongs to noncrystal, there is no fusing point but have softening point, when temperature is 70 ~ 110 DEG C, bonding force starts to increase, lignin at moderate temperatures (200 ~ 300 DEG C) can soften, liquefaction, therefore, crushing straw is transported to after in comminutor, by controlling the press temperature of 80 ~ 130 DEG C, pressure in addition certain again, lignin and cellulose can be made to closely bond, and adjacent stalk fibre can be made to glued joint mutually, thus obtain smooth surface, without obvious crackle and density up to 1 ~ 1.2g/cm
3stalk particle, get final product curing molding after cooling.Except above-mentioned points; adopt in ring modeling pelletizer ring mould and pressure roller compressing time; applied pressure is adjusted by the eccentric wheel on pressure roller; by the cohesive force regulating pressure roller and ring die clearance can regulate adjacent stalk fibre; by controlling grain density and load; make the density of stalk particle be increased to more than 10 times, adopt the press temperature of 80 ~ 130 DEG C during granulation, the effect of thermalization sterilizing can also be played particle.
The beneficial effect that the present invention has is:
This stalk pelletizing is simple for process, the cohesive force of adjacent stalk fibre can be regulated by control granulation pressure roller and ring die clearance, the density of stalk particle is increased greatly, effectively solve the difficult problem that stalk stores, alleviate the impact of stalk on environment simultaneously, make transport more convenient, and storage cost reduce 70%; Granulation outcome is good, shaping stalk particle smooth surface, without obvious crackle; The shaping stalk particle through high temperature compressed agricultural crop straw is novel clean energy resource, can be used as again to cultivate the base material of mushroom or the auxiliary fodder of livestock and poultry, be convenient to large-scale promotion application.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further:
Stalk pelletizing technique in the present invention comprises the steps:
This stalk pelletizing technique is specific as follows:
1, by hay cutter or other shears, agricultural crop straw cutting is obtained the crushing straw that length is 20 ~ below 100mm, then enter silage silo and carry out silage fermentation process;
2, crushing straw is sent in three-cylinder drier carry out drying process, make the water content control of crushing straw 9 ~ 15%;
3, carry out that fine powder is broken and to send dust pelletizing system to obtain granularity by wind be 40 ~ 150 object stalk fibres through large-scale beater disintegrating machine;
4, stalk fibre is delivered to ring modeling pelletizer; adopt ring mould and pressure roller compressing; in pressing process; grain density and load can be controlled by regulating pressure roller and ring die clearance; control press temperature at about 80 ~ 130 DEG C; on the one hand, increase the cohesive force of adjacent stalk fibre, obtain smooth surface, without obvious crackle and density up to 1 ~ 1.2g/cm
3stalk particle, on the other hand, particle is played to the effect of slaking sterilizing;
5, screened by the stalk particle after granulation, obtain the stalk particle of size uniform, chip etc. return step 3 and again process;
6, due to through the compressing stalk particle of ring mould, temperatures as high about 100 DEG C, therefore, needs to be sent into by stalk particle in cooler that to carry out cooling curing shaping, is down to room temperature, obtains smooth shaped granule by air cooling system.
7, shaped granule is put in storage, measures, packed.
After carrying out stalk pelletizing by this technique, mechanical automation, in enormous quantities, quantity-produced requirement can be met, the density of stalk particle adds more than 10 times, effectively solve the difficult problem that stalk stores, alleviate the impact of stalk on environment simultaneously, make transport more convenient, and storage cost reduces 70%, the shaping stalk particle through high temperature compressed agricultural crop straw is novel clean energy resource, can be used as again to cultivate the base material of mushroom or the auxiliary fodder of livestock and poultry.
Claims (3)
1. a stalk pelletizing technique, is characterized in that: comprise following processing step:
1. coarse crushing: shredded by stalk by hay cutter, obtains the crushing straw that length is 20 ~ 100mm, then enters silage silo and carries out silage fermentation process;
2. dry: the crushing straw after ensiling to be carried out drying process, obtain the crushing straw that water content is 9 ~ 15%;
3. fine powder is broken: dried crushing straw is carried out fine powder by pulverizer broken, and send dust pelletizing system to enter feed bin storage by wind, and obtaining granularity is 40 ~ 150 object stalk fibres;
4. granulation: stalk fibre is delivered to ring modeling pelletizer, adopt ring mould and pressure roller compressing, produce the temperature of 80 ~ 130 DEG C in pressing process and can make material slaking, obtaining density is 1 ~ 1.2g/cm
3stalk particle, particle is bar-shaped, and diameter is 8 ~ 10mm, and length is 20 ~ 50mm;
5. cooling forming: the stalk particle after compacting enters cooler, by wind cooling temperature lowering to room temperature, obtains smooth surface shaped granule;
2. described step adopts three-cylinder drier to carry out flue gas drying process.
2. stalk pelletizing technique according to claim 1, is characterized in that: described step 3. in pulverizer adopt large-scale beater disintegrating machine.
3. stalk pelletizing technique according to claim 1, is characterized in that: described step 4. and step 5. between increase screening technology, the stalk particle after granulation is screened, obtains the stalk particle of size uniform, cool afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275647.6A CN102764611B (en) | 2012-08-03 | 2012-08-03 | Straw pelleting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275647.6A CN102764611B (en) | 2012-08-03 | 2012-08-03 | Straw pelleting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102764611A CN102764611A (en) | 2012-11-07 |
| CN102764611B true CN102764611B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210275647.6A Expired - Fee Related CN102764611B (en) | 2012-08-03 | 2012-08-03 | Straw pelleting process |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756747B (en) * | 2014-01-13 | 2015-07-08 | 洛阳理工学院 | A method for crushing and forming straw-like biomass |
| CN105191669B (en) * | 2015-10-28 | 2018-02-27 | 福建健宝农业发展有限公司 | Edible and medical fungi culture medium fresh Juncao processing technology and its flowing water processing unit (plant) |
| CN105664793A (en) * | 2016-01-26 | 2016-06-15 | 安徽大地节能科技有限公司 | Granulation technology for waste crops |
| CN106239671B (en) * | 2016-08-19 | 2018-01-19 | 中国水稻研究所 | A kind of step fiberization process of agricultural crop straw two and its application |
| CN106433846A (en) * | 2016-11-25 | 2017-02-22 | 苏州草宝能源科技有限公司 | Method for producing fuel from plant straw |
| CN107057793A (en) * | 2017-06-08 | 2017-08-18 | 合肥市风达农业有限责任公司 | A kind of Application way of stalk |
| CN107417456A (en) * | 2017-06-23 | 2017-12-01 | 合肥市风达农业有限责任公司 | A kind of preparation method of stalk fertilizer |
| CN111168803A (en) * | 2019-12-31 | 2020-05-19 | 嘉兴市集美新材料科技有限公司 | Environment-friendly waterproof high-strength artificial board and manufacturing method thereof |
| CN111264704A (en) * | 2020-03-03 | 2020-06-12 | 徐展展 | Agricultural straw granulating method |
| CN111386966A (en) * | 2020-03-25 | 2020-07-10 | 黑龙江黑臻生物科技有限公司 | Preparation method of edible fungus culture medium containing compressed straw |
| CN114074016B (en) * | 2021-11-09 | 2022-07-22 | 山东金格瑞机械有限公司 | Drying and crushing method of plant materials and processing system thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366836A (en) * | 2002-02-04 | 2002-09-04 | 王昌荣 | Method for preparing granular cake and granular feed by using plant straw and stalks |
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2012
- 2012-08-03 CN CN201210275647.6A patent/CN102764611B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366836A (en) * | 2002-02-04 | 2002-09-04 | 王昌荣 | Method for preparing granular cake and granular feed by using plant straw and stalks |
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| CN102764611A (en) | 2012-11-07 |
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Granted publication date: 20150617 Termination date: 20180803 |