CN105256627A - Method for producing crop straw fibers - Google Patents
Method for producing crop straw fibers Download PDFInfo
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- CN105256627A CN105256627A CN201510536741.6A CN201510536741A CN105256627A CN 105256627 A CN105256627 A CN 105256627A CN 201510536741 A CN201510536741 A CN 201510536741A CN 105256627 A CN105256627 A CN 105256627A
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Abstract
The invention discloses a method for producing crop straw fibers. The method includes the following steps: 1) splitting crop straws into coarse fiber bundles separated from each fiber by using a high-speed grinding wheel grinding system; 2) decomposing all the fiber bundles by using a high-speed fluffer, and separating all the fibers one by one; 3) screening all the obtained fibers by using a belt pressing screening system and selecting fibers with the suitable length. In the whole process, the straws are delivered by water, and the percent concentration of straw weight accounting for total mixture weight is 2% to 10%. According to the invention, the fibers produced by the method for producing crop straw fibers has the characteristics of wood fibers and can be processed into a fiber board with instead of the wood fibers, so that the crop straws can become valuable things and cannot pollute the environment.
Description
Technical field
The present invention relates to a kind of fiber producing processes, espespecially a kind of machining mode by agricultural crop straw as the Raw material processings such as straw, wheat straw, cotton stalk, reed, corn stalk, waste of flax become the preparation method of fiber.
Background technology
China has one of minimum country of forest reserves in the world per capita.Current forest structure is unreasonable, can be obviously not enough for the mature forest felled, and wildwood protected project has adjusted and reduced Wood cut further, and domestic wood supply reduces relatively, but the demand of society to forestry products is growing, and imbalance between supply and demand is becoming increasingly acute.
Compared with the timber resources of growing tension, the agricultural straw resource of China but cannot be fully used always.And bringing severe contamination to environment, this has become comprehensive utilization of resources urgently to be resolved hurrily and the problem of ecological environmental protection.
China's fiberboard is that raw-material main cause is with wood fibre at present, the characteristic of grass fiber and the difference of lumber fibre.Original technology production grass fiber can not reach requirement prepared by fiberboard, and for the day by day routed weary present situation of wood materials data, urgently a kind of fiber can substitute lumber fibre.
Summary of the invention
The object of the present invention is to provide a kind of crop branch fiber preparation method, fiber prepared by the method has the characteristic of wood fibre, wood fibre can be replaced to be processed into fiberboard, agricultural crop straw is turned waste into wealth, no longer contaminated environment.
To achieve these goals, technical solution of the present invention is: a kind of crop branch fiber preparation method, it comprises the steps:
(1) high speed grinding wheel is adopted to exchange views the thick fibre bundle that agricultural crop straw is cracked into each fiber separation by system;
(2) adopt high speed fluffer that described fibre bundle is decomposed after, all fibres is all separated one by one;
(3) all fibres that step (2) obtains is screened by screening system with pressure, choose the fiber of applicable length.
Crop branch fiber preparation method of the present invention, send stalk by water in each process of wherein said step (1)-step (3), and the percent concentration that stalk weight accounts for mixture total weight amount is 2%-10%.
Crop branch fiber preparation method of the present invention, the process water in wherein said step (3) after washing, by entering step (1), step (2), step (3) use successively after flocculation filtration.
Crop branch fiber preparation method of the present invention, wherein said step (2) high speed fluffer adopts the rotating speed of 3000 revs/min-8000 revs/min that described fibre bundle is resolved into single fiber.
Crop branch fiber preparation method of the present invention, wherein the length and width of single described fiber is 2.2-2.4 than scope.
Crop branch fiber preparation method of the present invention, the single fiber of length range at 2-5 millimeter is selected by screening system by wherein said step (3).
After adopting such scheme, crop branch fiber preparation method of the present invention has the following advantages:
1, the present invention all adopts pure machining mode in whole preparation in the process of fiber, and overall process gets involved without any chemical agent, and cycling use of water, realizes the zero-emission of water and energy-conservation;
2, the stalk fibre of the present invention's gained after removing impurity and after screening, possesses the performance equal with wood fibre.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of crop branch fiber preparation method of the present invention.
Below in conjunction with accompanying drawing, by embodiment, the present invention is described further;
Detailed description of the invention
Embodiment 1
Shown in composition graphs 1, the crop branch fiber preparation method of the embodiment of the present invention one, comprises the following steps:
(1) the quartzy emery wheel of high speed is adopted to exchange views the thick fibre bundle that agricultural crop straw is cracked into each fiber separation by system, the quartzy emery wheel of high speed exchanges views in system the emery wheel using different-grain diameter combination of materials, soft material can be exchanged views, and common emery wheel is for the cutting to hard materials such as iron and steel, emery wheel is adopted to exchange views system mainly in order to alleviate the cut-out to stalk fibre, keep the length of fiber, and due to the heat trnasfer of this quartz sand material slow, ensure that temperature requirement 80 DEG C-160 DEG C in the process of exchanging views, and the stalk reaching this temperature at high temperature, the change of the physical property of its inside can make its cracking easier, thus both kept the original length of fiber, wide ratio characteristic, electric power can be saved again,
(2) adopt rotating speed to be that the high speed fluffer of 3000 revs/min decomposes the fibre bundle that step (1) obtains after, all fibres is all separated one by one, and the length and width of single fiber is 2.2 than scope;
(3) all fibres that step (2) obtains is screened by screening system with pressure, select length range and namely complete at the fiber of 2 millimeters.
Stalk is sent by water in the overall process of above-mentioned steps (1)-step (3), and the percent concentration that stalk weight accounts for mixture total weight amount is 2%, realize the process that the impurity such as ash content, capsule is removed in cleaning, process water in step (3) after washing is by after flocculation filtration, enter step (1) more successively, step (2), step recycle in (3), realize the zero-emission of water and energy-conservation target.
Embodiment 2
The crop branch fiber preparation method of the embodiment of the present invention two, comprises the following steps:
(1) the quartzy emery wheel of high speed is adopted to exchange views the thick fibre bundle that agricultural crop straw is cracked into each fiber separation by system;
(2) adopt rotating speed to be that the high speed fluffer of 8000 revs/min decomposes the fibre bundle that step (1) obtains after, all fibres is all separated one by one, and the length and width of single fiber is 2.4 than scope;
(3) all fibres that step (2) obtains is screened by screening system with pressure, select length range and namely complete at the fiber of 5 millimeters.
Stalk is sent by water in the overall process of above-mentioned steps (1)-step (3), and the percent concentration that stalk weight accounts for mixture total weight amount is 10%, realize the process that the impurity such as ash content, capsule is removed in cleaning, process water in step (3) after washing is by after flocculation filtration, enter step (1) more successively, step (2), step recycle in (3), realize the zero-emission of water and energy-conservation target.
Embodiment 3
The crop branch fiber preparation method of the embodiment of the present invention three, comprises the following steps:
(1) the quartzy emery wheel of high speed is adopted to exchange views the thick fibre bundle that agricultural crop straw is cracked into each fiber separation by system;
(2) adopt rotating speed to be that the high speed fluffer of 5000 revs/min decomposes the fibre bundle that step (1) obtains after, all fibres is all separated one by one, and the length and width of single fiber is 2.3 than scope;
(3) all fibres that step (2) obtains is screened by screening system with pressure, select length range and namely complete at the fiber of 3 millimeters.
Stalk is sent by water in the overall process of above-mentioned steps (1)-step (3), and the percent concentration that stalk weight accounts for mixture total weight amount is 5%, realize the process that the impurity such as ash content, capsule is removed in cleaning, process water in step (3) after washing is by after flocculation filtration, enter step (1) more successively, step (2), step recycle in (3), realize the zero-emission of water and energy-conservation target.
Through the stalk fibre that above-described embodiment 1,2,3 is prepared, then after making fiberboard, the experiment proved that can have equal performance with existing wood fibre board, is below experimental data:
| Index name | Unit | Wooden medium density fibre board (MDF) | Stalk medium density fibre board (MDF) |
| Density | Kg/m 3 | 450-880 | 450-950 |
| MOR | Mpa | ≥20 | ≥24 |
| Internal bond strength | Mpa | ≥0.45 | ≥0.5 |
| Expansion rate of water absorption | ％ | ≤6 | ≤6 |
The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (6)
1. a crop branch fiber preparation method, is characterized in that, comprises the steps:
(1) high speed grinding wheel is adopted to exchange views the thick fibre bundle that agricultural crop straw is cracked into each fiber separation by system;
(2) adopt high speed fluffer that described fibre bundle is decomposed after, all fibres is all separated one by one;
(3) all fibres that step (2) obtains is screened by screening system with pressure, choose the fiber of applicable length.
2. crop branch fiber preparation method as claimed in claim 1, it is characterized in that, send stalk by water in each process of described step (1)-step (3), and the percent concentration that stalk weight accounts for mixture total weight amount is 2%-10%.
3. crop branch fiber preparation method as claimed in claim 2, it is characterized in that, process water in described step (3) after washing, by entering step (1), step (2), step (3) use successively after flocculation filtration.
4. crop branch fiber preparation method as claimed in claim 1, it is characterized in that, described step (2) high speed fluffer adopts the rotating speed of 3000 revs/min-8000 revs/min that described fibre bundle is resolved into single fiber.
5. crop branch fiber preparation method as claimed in claim 4, is characterized in that: the length and width of single described fiber is 2.2-2.4 than scope.
6. the crop branch fiber preparation method as described in claim 1 or 5, is characterized in that: the single fiber of length range at 2-5 millimeter is selected by screening system by described step (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510536741.6A CN105256627A (en) | 2015-08-28 | 2015-08-28 | Method for producing crop straw fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510536741.6A CN105256627A (en) | 2015-08-28 | 2015-08-28 | Method for producing crop straw fibers |
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| CN105256627A true CN105256627A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510536741.6A Pending CN105256627A (en) | 2015-08-28 | 2015-08-28 | Method for producing crop straw fibers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738181A (en) * | 2016-11-29 | 2017-05-31 | 安庆市鼎升环保科技有限公司 | A kind of preparation method of modified crop straw fiber ecological composite material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042087U (en) * | 1988-07-10 | 1989-08-02 | 李召运 | High-efficiency straw-pulp machine |
| CN1372611A (en) * | 1999-09-10 | 2002-10-02 | 斯托拉·科帕伯格斯·伯格斯拉格斯公司 | Method for production of mechanical pulp |
| CN101666053A (en) * | 2009-09-11 | 2010-03-10 | 华南理工大学 | Production method of chemi-mechanical pulp |
| CN102009425A (en) * | 2009-10-26 | 2011-04-13 | 范维金 | Method for manufacturing green environmental-friendly type wood product by grass in dry method and method for recycling secondary product |
| CN103496029A (en) * | 2013-10-17 | 2014-01-08 | 杭州创源基业能源科技有限公司 | Method for manufacturing straw fiberboard |
| WO2015011066A1 (en) * | 2013-07-26 | 2015-01-29 | Philippe Saint Ger Ag | Method for producing molded products |
-
2015
- 2015-08-28 CN CN201510536741.6A patent/CN105256627A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042087U (en) * | 1988-07-10 | 1989-08-02 | 李召运 | High-efficiency straw-pulp machine |
| CN1372611A (en) * | 1999-09-10 | 2002-10-02 | 斯托拉·科帕伯格斯·伯格斯拉格斯公司 | Method for production of mechanical pulp |
| CN101666053A (en) * | 2009-09-11 | 2010-03-10 | 华南理工大学 | Production method of chemi-mechanical pulp |
| CN102009425A (en) * | 2009-10-26 | 2011-04-13 | 范维金 | Method for manufacturing green environmental-friendly type wood product by grass in dry method and method for recycling secondary product |
| WO2015011066A1 (en) * | 2013-07-26 | 2015-01-29 | Philippe Saint Ger Ag | Method for producing molded products |
| CN103496029A (en) * | 2013-10-17 | 2014-01-08 | 杭州创源基业能源科技有限公司 | Method for manufacturing straw fiberboard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738181A (en) * | 2016-11-29 | 2017-05-31 | 安庆市鼎升环保科技有限公司 | A kind of preparation method of modified crop straw fiber ecological composite material |
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