CN102225571A - Method for producing glue-free fiber board by using dry method of steam explosion slurry - Google Patents
Method for producing glue-free fiber board by using dry method of steam explosion slurry Download PDFInfo
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- CN102225571A CN102225571A CN2011101135017A CN201110113501A CN102225571A CN 102225571 A CN102225571 A CN 102225571A CN 2011101135017 A CN2011101135017 A CN 2011101135017A CN 201110113501 A CN201110113501 A CN 201110113501A CN 102225571 A CN102225571 A CN 102225571A
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Abstract
The invention discloses a method for producing a glue-free fiber board by using a dry method of steam explosion slurry, and relates to a method for producing a glue-free fiber board by using a dry method of slurry prepared by gramineous plant fiber steam explosion. The method comprises the following seven steps of: 1, preparing raw materials; 2, preparing the steam explosion slurry; 3, separating, accurately grinding and mixing; 4, drying the slurry; 5, paving; 6, performing hot pressing in high-water low-temperature and low-water high-temperature modes; and 7, performing post treatment. The glue-free fiber board prepared by the method has no free formaldehyde or phenol and does not harm the environment; the raw materials do not need to be treated by catalysts of acid, alkali and the like, so acid and alkali pollution and equipment corrosion are not caused; and the water-soluble resin in the steam explosion slurry is not separated or concentrated, and the separated residues are not subjected to secondary steam explosion, so the process is not required, the energy is saved, and the production efficiency is high. The manufactured glue-free fiber board has high strength and low cost.
Description
Technical field
The present invention relates to a kind of is raw material with the grass, the method for dry production middle and higher density non-glue fibre board after the steam blasting form slurry.
Background technology
CN 85105958 has announced the method for producing synthetic with lignocellulosic materials, and its lignocellulosic materials is handled with acidic catalyst before high-pressure water vapor is handled, and impels materials such as hemicellulose degraded and formation furfural, and this method is big to equipment corrosion.CN1041744C has announced the method for being produced heat reactive resin and composite product by ligno-ccllulose, lignin-cellulose material mixes after high steam is handled with the acidic catalyst that consumption is no more than 5% (weight), a part of water-soluble resin material is separated, make thermosetting resin as adhesive through concentrating, residue is handled with high steam once more and is made cellulose generation decomposition and hydrolysis generate water miscible, low-molecular-weight carbohydrate and other catabolites, these water-soluble things form independent or that mix generates a kind of waterproof colloid or composite as a kind of thermosetting adhesive under hot pressing.The method not only preparatory process is loaded down with trivial details, and big to equipment corrosion, thereby has improved production cost greatly.
Summary of the invention
Above-mentioned deficiency at prior art, the technical problem to be solved in the present invention is to design a kind ofly to make raw material with the grass fiber, needn't be through catalyst treatment such as peracid, alkali, the water-soluble resin in the steam blasting slurry is not separated and concentrate, directly with the method for steaming quick-fried slurry dry production non-glue fibre board.
The technical scheme that solves the problems of the technologies described above is:
This usefulness is steamed the method for quick-fried slurry dry production non-glue fibre board and is carried out as follows:
1) raw material is prepared: collect the grass raw material, according to the difference of raw material form, carry out necessary brachymemma or section discriminatively, air dry, moisture content＜10%;
2) preparation of steam blasting slurry: raw material is packed in the cooker of steam blasting device, inject water vapour and be pressurized to 1.2-1.6MPa, pressurize 6-12 minute, after again pressure being brought up to 1.6-1.8MPa, open the valve release suddenly, fibrous raw material is become the steam blasting slurry of flocculence fiber by explosion, promptly steams quick-fried slurry or slurry;
3) separate, correct grinding and mixing again: separate vapour explosion slurry, fibre length is finish grinded to≤3mm greater than the coarse fodder of 3mm, mix with isolated fines again;
4) slurry drying: it is 8%-16% that slurry is carried out pneumatic conveying drying to moisture content;
5) mat formation: with slurry according in or the common process of high density fiberboard production mat formation into slab;
6) carry out high water low temperature, low water high temperature mode hot pressing: shaping slab is placed on carries out hot pressing on the hot press and get the non-adhesive fiberboard; Hot pressing temperature is pressed moisture calibration, the moisture content height, and hot pressing temperature is low, and moisture content is low, the hot pressing temperature height, hot pressing temperature is controlled to be 130-180 ℃; Hot pressing is made up of hydrolysis section, exhaust section, fluxing zone, and wherein hydrolysis section, fluxing zone hot pressing pressure are 3.0-4.5MPa, and the exhaust section hot pressing pressure is 1-2MPa; Hydrolysis section, fluxing zone hot pressing time are 20-40s/mm, and the exhaust section hot pressing time is 3-6s/mm;
7) post processing: after the burr plate cooling of hot pressing, edging, sanding, packing.
Said raw material is bamboo wood, bamboo surplus material of processing, the agricultural waste material of straw, wheat straw, maize straw, bagasse and so on, the grass family weeds of reed, awns stalk and so on.
Add the polyvinyl chloride or the pentosan that account for dried slurry weight 1%-5% when mating formation and to improve intensity.
The invention has the beneficial effects as follows before steam blasting and raw material is not carried out acid, alkali treatment, the worry of nonpollution environment and etching apparatus; With steaming quick-fried slurry dry production fiberboard, the water-soluble resin in this slurry is not separated and concentrate, operations such as separation have been reduced, do not consume the concentrated energy, nor adopt the residue after separating is carried out the high steam processing once more to make the processing method of composite, therefore avoided the numerous and diverse and low deficiency of production efficiency of operation.The non-glue fibre board of producing by this method does not have free formaldehyde and free phenol, therefore has the advantage that is unlikely to be detrimental to health with contaminated environment.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment: this method is emphasized is to be raw material with grass.Lignin-polysaccharide complex in the grass fiber finer cell wall ultra microstructure is except that comprising methyl phenyl ethers anisole key, phenyl glycosidic bond, hemiacetal and the acetal bonds that softwood, broadleaf have, also have particular structure such as ether that forulic acid and right-coumaric acid are bridge, ester bond, fiber is easily separated in steam blasting, make grass raw material and softwood and broadleaf relatively, be easy to steam quick-fried legal system and get slurry.In addition, constituents such as right-hydroxyl coumaric acid, forulic acid can improve the content of phenolic hydroxyl group, alcoholic extract hydroxyl group and carboxyl isoreactivity functional group.This is to choose to be easy to steam quick-fried legal system to get the grass of slurry be the internal factor of raw material.On the other hand, lignin is the thermoplasticity macromolecular compound, glassy state with unformed high polymer transforms character, when hot pressing temperature is higher than the lignin glass transition temperature, lignin is softening to become sticky, and has adhesive tension, after therefore steaming lignin in the quick-fried slurry and adopting process matched therewith, can be used as the adhesive in the Fibreboard Production, needn't additionally add the mechanism place of other general chemical adhesives.
Among the present invention, though in relevant each operation of dry production non-glue fibre board some technical parameters are had its particular value, but crucial technical contribution has some: the one, affirmed that from the Ultrastructural chemical composition of fiber finer cell wall steaming quick-fried slurry with the grass fiber has superiority as fiberboard raw material ratio timber, and determine to make raw material with grass; The 2nd, formulate hot pressing temperature according to steaming quick-fried slurry lignin glass transition temperature; The 3rd, according to of the influence of moisture content height, formulate the hot pressing temperature control mode of high water low temperature, low water high temperature to the lignin softening degree.For improving non-glue fibre board intensity, when mating formation, add polyvinyl chloride or pentosan, intensity can improve 20%-40%.
Therefore this method concerned process steps, technological process etc. are most can also just not launch to introduce one by one with reference to the method for the wood fibre dry production middle and higher density fiberboard of routine.
To have step (6) hot pressing of technical characterstic to be listed in the table below below most by 18 embodiment:
Illustrate: among the embodiment 1-18, the hot pressing pressure value is represented hydrolysis section pressure, exhaust section pressure, fluxing zone pressure successively; The hot pressing time value is represented hydrolysis section time, exhaust section time, fluxing zone time successively.
Embodiment 1: the bamboo bits are dried to moisture content＜10%, pack in the cooker, charge into steam and be pressurized to 1.4MPa, pressurize 10 minutes, pressure-raising is to 1.6MPa again, open the valve release, make and steam quick-fried slurry, this slurry is separated suddenly, the coarse fodder of fibre length＞3mm is finish grinded to≤3mm, mix with former isolated fines, pneumatic conveying drying to moisture content is 12% together, mats formation by the common process of medium density fibre board (MDF) production more again, carry out hot pressing, 160 ℃ of hot pressing temperatures, hydrolysis section, fluxing zone hot pressing pressure are 4.0MPa, the exhaust section hot pressing pressure is 1.5MPa; The hydrolysis section hot pressing time is 4min, and the exhaust section hot pressing time is 0.5min, the fluxing zone hot pressing time is 3.5min, at last the glueless bamboo fiberboard that is pressed into is carried out post processing.
All the other embodiment 2-18, all can carry out with reference to the method for embodiment 1, grass raw material wherein, difference according to the raw material form, carry out necessary brachymemma or section discriminatively, air dry, moisture content＜10%, inject in the cooker water vapour supercharging 1.2-1.6MPa, dwell time 6-12 minute, pressure-raising is to 1.6-1.8MPa scope inner control again, the value of the value of controlled pressure and control hot pressing time respectively in three stages during hot pressing on press, value listed in the reference table gets final product, and enumerates no longer one by one.
Claims (3)
1. one kind with the method for steaming quick-fried slurry dry production non-glue fibre board, it is characterized in that carrying out as follows:
1) raw material is prepared: collect the grass raw material, according to the difference of raw material form, carry out necessary brachymemma or section discriminatively, air dry, moisture content＜10%;
2) preparation of steam blasting slurry: raw material is packed in the cooker of steam blasting device, inject water vapour and be pressurized to 1.2-1.6MPa, pressurize 6-12 minute, after again pressure being brought up to 1.6-1.8MPa, open the valve release suddenly, fibrous raw material is become the steam blasting slurry of flocculence fiber by explosion, promptly steams quick-fried slurry or slurry;
3) separate, correct grinding and mixing again: separate vapour explosion slurry, fibre length is finish grinded to≤3mm greater than the coarse fodder of 3mm, mix with isolated fines again;
4) slurry drying: it is 8%-16% that slurry is carried out pneumatic conveying drying to moisture content;
5) mat formation: with slurry according in or the common process of high density fiberboard production mat formation into slab;
6) carry out high water low temperature, low water high temperature mode hot pressing: shaping slab is placed on carries out hot pressing on the hot press and get the non-adhesive fiberboard; Hot pressing temperature is pressed moisture calibration, the moisture content height, and hot pressing temperature is low, and moisture content is low, the hot pressing temperature height, hot pressing temperature is controlled to be 130-180 ℃; Hot pressing is made up of hydrolysis section, exhaust section, fluxing zone, and wherein hydrolysis section, fluxing zone hot pressing pressure are 3.0-4.5MPa, and the exhaust section hot pressing pressure is 1-2MPa; Hydrolysis section, fluxing zone hot pressing time are 20-40s/mm, and the exhaust section hot pressing time is 3-6s/mm;
7) post processing: after the burr plate cooling of hot pressing, edging, sanding, packing.
2. as claimed in claim 1 with the method for steaming quick-fried slurry dry production non-glue fibre board, it is characterized in that said raw material is bamboo wood, bamboo surplus material of processing, the agricultural waste material of straw, wheat straw, maize straw, bagasse and so on, the grass family weeds of reed, awns stalk and so on.
3. according to claim 1 with the method for steaming quick-fried slurry dry production non-glue fibre board, add polyvinyl chloride or the pentosan that accounts for dried slurry weight 1%-5% when it is characterized in that mating formation.
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490240A (en) * | 2011-12-09 | 2012-06-13 | 谢力生 | Fiberboard manufacturing method |
| CN102493242A (en) * | 2011-12-30 | 2012-06-13 | 天津商业大学 | Method for manufacturing particleboards by using wheat straws preprocessed through steam explosion |
| CN102514066A (en) * | 2011-12-13 | 2012-06-27 | 江苏洛基木业有限公司 | Method for making impregnated paper laminated highly wear-resistant grass-wood composite floor |
| CN103362008A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for producing steam-exploded stalk eco-boards by utilizing alkali lignin as binder |
| CN103358377A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for manufacturing binder-less environment-friendly artificial boards from steam-exploded stalks |
| CN103358381A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for producing steam exploded stalk binder-less artificial boards by alkali process |
| CN103496028A (en) * | 2013-10-15 | 2014-01-08 | 南京中医药大学 | Method for manufacturing steam explosion fiber separating self-bonding abelmoschus manihot fiber board |
| CN103696309A (en) * | 2013-12-11 | 2014-04-02 | 苏州谊恒印务有限公司 | Preparation method for waste cotton fabric printing paper pulp |
| CN105256628A (en) * | 2015-09-21 | 2016-01-20 | 昆明理工大学 | Manufacturing method for no-glue cow dung fiberboard |
| CN106592305A (en) * | 2016-12-23 | 2017-04-26 | 浙江农林大学 | Preparation method for bamboo fibre filaments |
| CN106633983A (en) * | 2016-10-21 | 2017-05-10 | 浙江农林大学 | Preparation method of nanometer particle/fiber composite material |
| CN106738188A (en) * | 2016-12-23 | 2017-05-31 | 浙江农林大学 | A kind of bamboo filament recombinates the preparation method of bamboo flooring |
| CN106868903A (en) * | 2017-01-05 | 2017-06-20 | 新疆弘瑞达纤维有限公司 | A kind of method that fibre reinforced composites are prepared with cotton stalk |
| CN108481509A (en) * | 2018-04-04 | 2018-09-04 | 吉林禾木之家科技发展有限公司 | The preparation method of stalk fiber board |
| CN108582337A (en) * | 2018-05-30 | 2018-09-28 | 国际竹藤中心 | A kind of bamboo wood explosion separation with from recombination method |
| CN108716153A (en) * | 2018-07-04 | 2018-10-30 | 无锡瀚博自动化科技有限公司 | A kind of stalk dodges wharf explosion and its working method |
| CN108797192A (en) * | 2017-04-27 | 2018-11-13 | 沈志忠 | A kind of no glue straw fiber board and its preparation method and application |
| CN110549456A (en) * | 2019-08-01 | 2019-12-10 | 四川金象赛瑞化工股份有限公司 | Method for preparing furfural and co-producing glue-free fiberboard from reed |
| CN115056308A (en) * | 2022-07-28 | 2022-09-16 | 湖南口味王集团有限责任公司 | Areca shaving board and preparation method thereof |
| CN118107029A (en) * | 2024-04-03 | 2024-05-31 | 西南林业大学 | Preparation method of glue-free bamboo-based fibrillar plate |
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Cited By (27)
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| CN102490240A (en) * | 2011-12-09 | 2012-06-13 | 谢力生 | Fiberboard manufacturing method |
| CN102514066A (en) * | 2011-12-13 | 2012-06-27 | 江苏洛基木业有限公司 | Method for making impregnated paper laminated highly wear-resistant grass-wood composite floor |
| CN102493242A (en) * | 2011-12-30 | 2012-06-13 | 天津商业大学 | Method for manufacturing particleboards by using wheat straws preprocessed through steam explosion |
| CN103362008A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for producing steam-exploded stalk eco-boards by utilizing alkali lignin as binder |
| CN103358377A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for manufacturing binder-less environment-friendly artificial boards from steam-exploded stalks |
| CN103358381A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院过程工程研究所 | Method for producing steam exploded stalk binder-less artificial boards by alkali process |
| CN103358381B (en) * | 2012-04-01 | 2016-02-24 | 中国科学院过程工程研究所 | The preparation method of a kind of alkaline process steam puffed stalk glue-free artificial board |
| CN103358377B (en) * | 2012-04-01 | 2016-02-24 | 中国科学院过程工程研究所 | The preparation method of the glue-free environment friendly artificial board of a kind of steam puffed stalk |
| CN103496028A (en) * | 2013-10-15 | 2014-01-08 | 南京中医药大学 | Method for manufacturing steam explosion fiber separating self-bonding abelmoschus manihot fiber board |
| CN103696309A (en) * | 2013-12-11 | 2014-04-02 | 苏州谊恒印务有限公司 | Preparation method for waste cotton fabric printing paper pulp |
| CN105256628A (en) * | 2015-09-21 | 2016-01-20 | 昆明理工大学 | Manufacturing method for no-glue cow dung fiberboard |
| CN105256628B (en) * | 2015-09-21 | 2017-09-22 | 昆明理工大学 | A kind of preparation method without glue cow dung fiberboard |
| CN106633983A (en) * | 2016-10-21 | 2017-05-10 | 浙江农林大学 | Preparation method of nanometer particle/fiber composite material |
| CN106738188B (en) * | 2016-12-23 | 2019-07-09 | 浙江农林大学 | A kind of preparation method of bamboo filament recombination bamboo flooring |
| CN106592305A (en) * | 2016-12-23 | 2017-04-26 | 浙江农林大学 | Preparation method for bamboo fibre filaments |
| CN106592305B (en) * | 2016-12-23 | 2018-04-13 | 浙江农林大学 | A kind of preparation method of bamboo filament |
| CN106738188A (en) * | 2016-12-23 | 2017-05-31 | 浙江农林大学 | A kind of bamboo filament recombinates the preparation method of bamboo flooring |
| CN106868903A (en) * | 2017-01-05 | 2017-06-20 | 新疆弘瑞达纤维有限公司 | A kind of method that fibre reinforced composites are prepared with cotton stalk |
| CN108797192A (en) * | 2017-04-27 | 2018-11-13 | 沈志忠 | A kind of no glue straw fiber board and its preparation method and application |
| CN108481509A (en) * | 2018-04-04 | 2018-09-04 | 吉林禾木之家科技发展有限公司 | The preparation method of stalk fiber board |
| CN108582337A (en) * | 2018-05-30 | 2018-09-28 | 国际竹藤中心 | A kind of bamboo wood explosion separation with from recombination method |
| CN108716153A (en) * | 2018-07-04 | 2018-10-30 | 无锡瀚博自动化科技有限公司 | A kind of stalk dodges wharf explosion and its working method |
| CN108716153B (en) * | 2018-07-04 | 2023-12-29 | 无锡瀚博自动化科技有限公司 | Straw flash explosion bin and working method thereof |
| CN110549456A (en) * | 2019-08-01 | 2019-12-10 | 四川金象赛瑞化工股份有限公司 | Method for preparing furfural and co-producing glue-free fiberboard from reed |
| CN110549456B (en) * | 2019-08-01 | 2021-09-28 | 四川金象赛瑞化工股份有限公司 | Method for preparing furfural and co-producing glue-free fiberboard from reed |
| CN115056308A (en) * | 2022-07-28 | 2022-09-16 | 湖南口味王集团有限责任公司 | Areca shaving board and preparation method thereof |
| CN118107029A (en) * | 2024-04-03 | 2024-05-31 | 西南林业大学 | Preparation method of glue-free bamboo-based fibrillar plate |
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Application publication date: 20111026 |