CN107304524A - A kind of process for preparing straw fiber of environment-friendly high-efficiency - Google Patents
A kind of process for preparing straw fiber of environment-friendly high-efficiency Download PDFInfo
- Publication number
- CN107304524A CN107304524A CN201610241538.0A CN201610241538A CN107304524A CN 107304524 A CN107304524 A CN 107304524A CN 201610241538 A CN201610241538 A CN 201610241538A CN 107304524 A CN107304524 A CN 107304524A
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- CN
- China
- Prior art keywords
- stalk
- fibre
- fiber
- environment
- efficiency
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention provides a kind of process for preparing straw fiber of environment-friendly high-efficiency, it is characterised in that：Comprise the steps,（1）Get the raw materials ready, clean stalk, keep stalk humidity；（2）It is broken, stalk is machined to crude fibre with fiber；（3）Discongest, crude fibre is chilled into internal moisture is frozen, and fine fibre is machined to fiber after then thawing；（4）Cleaning, cleans fine fibre with water, filters out impurity.Present invention utilizes the physiological property of stalk, control stalk physiological moisture does not dry up, and easily obtains using cryogenic freezing is discongested by the way of stalk fibre, and manufacture efficiency is high, and fiber output capacity height does not pollute to environment.Stalk fibre produced by the present invention can be widely used in papermaking and building materials field, be used as the raw material of the products such as slurry paper, fiberboard, density board, corrugated board.
Description
Technical field
The invention belongs to raw material of industry technical field, particularly a kind of process for preparing straw fiber of environment-friendly high-efficiency.
Background technology
Stalk is the general name of ripe crops cauline leaf (fringe) part, and corn stalk, sorghum stalks, straw, wheat straw, beanstalk, cotton stalk etc. belongs to agricultural crop straw.Because the variety of crops of different regions is different, thus the stalk species of each place is also not quite similar.Stalk includes the compositions such as cellulose, hemicellulose, fat key, lignin and nutrient solution, can be used for papermaking and building materials to the stalk fibre that stalk handle acquisition, is to alleviate the important source material that China's tree resources lack.But the technique of currently manufactured stalk fibre all carries out boiling using chemicals such as acid, alkali, lime, a large amount of dirts is produced in the fabrication process, fiber output capacity is low, expend water greatly, cause environmental pollution, increase the production cost of manufacturing enterprise.Due to defective workmanship, a large amount of stalks that the annual agricultural production of China is obtained are wasted.Therefore the process for preparing straw fiber for providing environment-friendly high-efficiency is technical problem urgently to be resolved hurrily at present.
The content of the invention
It is an object of the present invention to provide the process for preparing straw fiber of environment-friendly high-efficiency.
To achieve the above object, the method that the present invention is provided comprises the steps that (1) gets the raw materials ready, and cleans stalk, keeps stalk humidity；(2) crush, stalk is machined to crude fibre with fiber；(3) discongest, crude fibre is chilled into internal moisture is frozen, and fine fibre is machined to fiber after then thawing；(4) clean, clean fine fibre with water, filter out impurity.
Moreover, the water that stalk is cleaned when getting the raw materials ready is handled using ozone.
Moreover, the section that stalk is cut into 50~100mm length after getting the raw materials ready puts into polybag storage.
Moreover, stalk is machined to soak after crude fibre by destruction step with fiber, immersion water weight ratio is 1: 2~1: 4.
Moreover, the use water weight ratio of cleaning fine fibre is 1: 4~1: 10.
Crude fibre is freezed at a temperature of -7 DEG C~0 DEG C moreover, discongesting step.
Present invention utilizes the physiological property of stalk, control stalk physiological moisture does not dry up, and easily obtains using cryogenic freezing is discongested by the way of stalk fibre, and manufacture efficiency is high, and fiber output capacity height does not pollute to environment.
Embodiment
The process for preparing straw fiber that the present invention is provided has following steps：
(1) get the raw materials ready, clean stalk, keep stalk humidity；
(2) crush, stalk is machined to crude fibre with fiber；
(3) discongest, crude fibre is chilled into internal moisture is frozen, and fine fibre is machined to fiber after then thawing；
(4) clean, clean fine fibre with water, filter out impurity.
After the crop maturities such as wheat, paddy rice, its stalk circular tube structure is that the compositions such as cellulose, hemicellulose, fat key, lignin and nutrient solution are formed with its plant growth rule, is transported in stage of ripeness nutrient solution from root along tube wall in fruit (wheat, grain etc.).After crop maturity, root is cut off because of harvesting and the moisture of stalk has been supplied, nutrient solution and other compositions are trapped between the fiber of tube wall, with moisture evaporation, and stalk is solid to harden.After stalk is withered, then it is processed extremely difficult, the particularly impurity difficulty such as fiber and fat key, lignin is separated.Therefore the present invention keeps stalk humidity first when getting the raw materials ready, and the nutrient solution not allowed in stalk dries up.When it is implemented, when crops are gathered in can as far as possible cut, tie, transport and carry out simultaneously, stalk is not allowed to be exposed to the sun field is exposed for a long time, the physiological moisture of stalk does not dry up.It can not in time transport back or during dry weather, stalk can sprayed, moisturized in favor of moisturizing, safeguard the reset condition of the compositions such as fiber and nutrient solution, not allow stalk to dry up.Withdrawn from farmland after stalk, remove blade and wheat elbow, paddy elbow, remove weeds, soil, clean stalk, do not allowed in raw material and there is any debris and enter subsequent manufacturing processes.Because it is frequently not to immediately enter subsequent manufacturing processes to be ready to after stalk, need through being laid in and being transported after a while, therefore the section that stalk is cut into 50~100mm length by the embodiment of the present invention after getting the raw materials ready puts into polybag storage, or after stacking with film cover envelope to maintain humidity.
Wheat and barley have an aptitude to smut, if having 1% lesion in the stalk of harvest, and not handled in harvest and storage can be because flying upward for dust-brand powder causes a large amount of black liquor.The water that stalk is cleaned when the present invention gets the raw materials ready uses ozone (O3) handled, Xiang Shuizhong is passed through ozone gas with 5~15ml/L components.Ozone Water can effectively suppress germ, and black liquor can be reduced in stalk fibre manufacturing process.
Stalk is processed into crude fibre by the present invention in destruction step with fiber crusher machine.By the preliminary profile and institutional framework for changing stalk of machining, crude fibre now is 3~6 millimeters of sheet or fibre strip.Stalk is machined to be put into after crude fibre in water with fiber and soaked, is conducive to removing impurity, degraded nutrient solution and other compositions.Stalk can only be worn into powdery by sold fibre machine on the market, should not be used for process industry stalk fibre.The environment-protection fiber machine that the present invention is developed using applicant, can control the thickness of fiber according to roller pressure time length.
Then carry out discongesting step, broken obtained crude fibre is chilled into internal moisture is frozen, and fine fibre is machined to fiber after defrosting.Because hydrogenesis becomes big into ice body product under low temperature, coarse fiber structure can be destroyed by being thawed after freezing, beneficial to discongesting into fine fibre, therefore broken obtained crude fibre should keep internal moisture to freeze.If being first filtered dry coarse-fibred outside moisture, the expansion in frost is discongested better.General moisture can start to freeze at 0 DEG C, and current general freezer equipment typically can provide -7 DEG C~0 DEG C temperature environment, it is sufficient to which satisfaction discongests demand, and then more low temperature can be provided using professional freezing equipment if necessary to faster freeze.The cooling time needed when being therefore embodied is different according to coarse-fibred moisture and cryogenic temperature, and experiment proves that typically the demand of discongesting can be met in 10~24 hours.Fining-off, generally 0.07 ~ 0.1 millimeter can be carried out according to the fine fibre index needed for specific industrial production by discongesting the processing of step.The stalk that prior art is used is exposed to the sun, and nutrient solution, fat tendon and fiber, which all dry up, forms stiff rod, it is therefore desirable to which acquisition fine fibre could be separated by adding soda acid progress boiling.And the present invention only need to be freezed and be machined, simple and effective.Cooking process destroys stalk using chemical means, and fiber output capacity is low, and fiber output capacity of the present invention has much exceeded cooking process, and fiber quality is more preferable.
Processing is reached after required technical standard, carries out cleaning step：Fiber is taken out from fibre machine and is cleaned and is filtered dry, the impurity such as fat key, lignin and water flow out simultaneously, it is to avoid impurity disturbs the quality of stalk fibre manufactured goods.The stalk fibre not cleaned up for example can easy yellowing for papermaking.Cleaning step is used for that the water after cleaning is nontoxic to be can be recycled, and the used water of prior art was because adding soda acid and being contaminated, it can be seen that environmental-protection function of the invention.And the water consumption of the present invention is far less than the water consumption of cooking process, Hydra water is less in material preparation step, and the use water weight ratio of cleaning fine fibre is 1: 4~1: 10.Immersion water weight ratio is 1: 2~1: 4.Whole producing process is usually no more than 1: 20 with water ratio, saves a large amount of industrial waters, reduces cost, environmental protection.
The stalk fibre obtained after cleaning up can dry preservation, and also directly can be used for industry with saturation state manufactures, for example, be directly used as the straw pulp of paper grade (stock).
Specific embodiment one：
Wheat straw waste is cut into the section of 80mm length with chaffcutter, it is fitted into container and cleans, ozone is passed through with 15ml/L components into water during cleaning, leveled with a roller and pressed with fibre machine after the completion of getting the raw materials ready, raw material is broken into crude fibre, soaked using the water of 2 times of crude fibre volumes, pressure is leveled with a roller again with fibre machine after then crude fibre is freezed under -7 DEG C~0 DEG C environment, the fine fibre for meeting paper production needs is pressed into until leveling with a roller.Fine fibre is cleaned with the water of 10 times of fine fibre volumes, impurity is filtered out, you can for papermaking.
Specific embodiment two：
Rice straw is cut into the section of 10mm length with chaffcutter, it is fitted into container and cleans, leveled with a roller and pressed with fibre machine after the completion of getting the raw materials ready, raw material is broken into crude fibre, soaked using the water of 4 times of crude fibre volumes, then level pressure with a roller again with fibre machine after crude fibre is freezed under -7 DEG C~0 DEG C environment, the fine fibre that high-density plate produces needs is met until roller is pressed into.Fine fibre is cleaned with the water of 4 times of fine fibre volumes, impurity is filtered out.Then fine fibre is air-dried or dried, 1% adhesive is added, high-density plate is shaped to hot press.
Claims (6)
1. a kind of process for preparing straw fiber of environment-friendly high-efficiency, it is characterised in that：Methods described comprises the steps that (1) gets the raw materials ready, and keeps stalk humidity, and cleaning stalk removes debris；(2) crush, stalk is machined to crude fibre with fiber；(3) discongest, crude fibre is chilled into internal moisture is frozen, and fine fibre is machined to fiber after then thawing；(4) clean, clean fine fibre with water, filter out impurity.
2. the process for preparing straw fiber of environment-friendly high-efficiency as claimed in claim 1, it is characterised in that：The water of stalk is cleaned when getting the raw materials ready
Handled using ozone.
3. the process for preparing straw fiber of environment-friendly high-efficiency as claimed in claim 1, it is characterised in that：The section that stalk is cut into 50~100mm length after getting the raw materials ready puts into polybag storage.
4. the process for preparing straw fiber of environment-friendly high-efficiency as claimed in claim 1, it is characterised in that：Destruction step is fine by stalk
Dimension is machined to soak after crude fibre, and immersion water weight ratio is 1: 2~1: 4.
5. the process for preparing straw fiber of environment-friendly high-efficiency as claimed in claim 1, it is characterised in that：That cleans fine fibre uses water weight
Amount is than being 1: 4~1: 10.
6. process for preparing straw fiber as claimed in claim 1, it is characterised in that：Step is discongested to freeze crude fibre at a temperature of -7 DEG C~0 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610241538.0A CN107304524A (en) | 2016-04-19 | 2016-04-19 | A kind of process for preparing straw fiber of environment-friendly high-efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610241538.0A CN107304524A (en) | 2016-04-19 | 2016-04-19 | A kind of process for preparing straw fiber of environment-friendly high-efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107304524A true CN107304524A (en) | 2017-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610241538.0A Pending CN107304524A (en) | 2016-04-19 | 2016-04-19 | A kind of process for preparing straw fiber of environment-friendly high-efficiency |
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| CN (1) | CN107304524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809428A (en) * | 2020-07-24 | 2020-10-23 | 淄博圣泉纸业有限公司 | High-speed cutting method for softwood pulp |
-
2016
- 2016-04-19 CN CN201610241538.0A patent/CN107304524A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809428A (en) * | 2020-07-24 | 2020-10-23 | 淄博圣泉纸业有限公司 | High-speed cutting method for softwood pulp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171031 |
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| WD01 | Invention patent application deemed withdrawn after publication |