CN1699687A - Paper-making method using straw and corn stalk mixed pulp - Google Patents
Paper-making method using straw and corn stalk mixed pulp Download PDFInfo
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- CN1699687A CN1699687A CN 200410020577 CN200410020577A CN1699687A CN 1699687 A CN1699687 A CN 1699687A CN 200410020577 CN200410020577 CN 200410020577 CN 200410020577 A CN200410020577 A CN 200410020577A CN 1699687 A CN1699687 A CN 1699687A
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Abstract
The invention discloses a method of mixed pulp for paper making with rice straw and corn stalk. First prepare mixed pulp by the corn stalk and rice straw into mixed bleached pulp, then use the mixed pulp of rice straw and corn stalk with wood pulp to make paper making pulp to place paper on paper making machine. In this invention, the corn pith stalk in the mixed pulp can reduce the amount of relatively high price wood pulp without increasing technical process.
Description
Technical field
The present invention relates to a kind ofly, particularly a kind ofly starch with herbaceous plant slurry and wood pulp and with the herbaceous plant in the method for manufacturing cultural paper with herbaceous plant slurry and wood pulp and with the method for making cultural paper.
Background technology
As everyone knows, cultural paper can with some herbaceous plant slurry and wood pulp mixing and make with paper pulp.During papermaking, prepare herbaceous plant slurry with herbaceous plant earlier, be hybridly prepared into and use paper pulp with herbaceous plant slurry and wood pulp again, then with and with paper pulp at the paper machine cultural paper of manufacturing paper with pulp out.When preparing above-mentioned herbaceous plant slurry, with chaffcutter herbaceous plant is shredded earlier, the herbaceous plant of chopping is used NaOH and sodium sulfite boiling in rotary spherical digester, after the boiling, material spray in the rotary spherical digester is put in the blow tank, then in a series of washings, purification, screening installation, such as vacuum pulp washing machine, shake frame sieve, screen centrifuge, hydrocyclone, in the decker, wash, purify, screen spurting the material that, make natural color pulp, again natural color pulp is bleached, make the herbaceous plant slurry; When preparing above-mentioned wood pulp, get the commercial wood pulp pulpboard with double plate mill making beating, make wood pulp, the wood pulp of making and the above-mentioned herbaceous plant slurry mixed preparing of making go out and use paper pulp.Can and have multiple with the herbaceous plant slurry of making cultural paper with wood pulp, such as rice straw pulp, Straw Pulp, cornstalk slurry etc., different herbaceous plant slurry has different physicochemical properties, starches the paper of producing with the herbaceous plant of different physicochemical properties and has different performances.In the prior art, the herbaceous plant slurry of making in the cultural paper all is with single a kind of herbaceous plant slurry, also with the cultural paper performance that produces limitation is arranged with single a kind of herbaceous plant slurry and wood pulp; Be that raw material is made the cornstalk slurry at existing report in recent years with cornstalk, in Chinese periodical magazine " Liaoning papermaking " second phase in 1997, a kind of " preliminary test of corn stalk pulping and paper-making " disclosed, point out in this preliminary test: the fibre length of cornstalk is greater than rice-straw fibre length, the intensity of the slurry that cornstalk makes is also than rice straw pulp height, as paper making raw material, cornstalk significantly is better than straw.But will remove marrow earlier during with cornstalk slurrying, cornstalk has increased the processing step in the slurrying except marrow, uses the cornstalk slurry to improve as the expense of raw material papermaking.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, propose a kind of mixed slurry and wood pulp and usefulness of using rice straw pulp and not starching except two kinds of herbaceous plant of cornstalk slurry of marrow, manufacturing property is straw and the mixed method of starching papermaking of cornstalk of cultural paper preferably.
The present invention is achieved using the following method.
Invention scheme of the present invention is to use and the essentially identical herbaceous plant boiling method difference boiling cornstalk of prior art and straw, then the cornstalk after the boiling and straw are mixed and use and the mixed slurry of method system of the essentially identical washing of prior art, purification, screening, bleaching, mixed slurry and wood pulp are blended in papermaking on the paper machine.
For realizing the foregoing invention scheme, the method of the mixed slurry of straw and cornstalk papermaking has following step: steam the mixed preparation herbaceous plant slurry that floats with cornstalk and straw list earlier, go out with the wood pulp mixed preparing with the herbaceous plant slurry of preparation again and use paper pulp, then usefulness and with paper pulp papermaking on paper machine.
Cornstalk in the inventive method is not removing marrow, not disleaf, do not cut the whole stalk of corn stem of the tip after breaking off with the fingers and thumb of farmland harvesting removed corncob.
The mixed herbaceous plant slurry that floats preparation of above-mentioned single steaming is the mixed slurry of straw and cornstalk, the method for making of the mixed slurry of straw and cornstalk is: earlier straw and cornstalk are shredded with chaffcutter respectively, then the straw of chopping and the respectively boiling in rotary spherical digester of cornstalk of chopping, again straw and cornstalk after the boiling are respectively spurted in the same blow tank, make straw and cornstalk after the boiling in blow tank, be mixed into mixed material, to washing through spurting the mixed material that, purify, screening, make this color contamination slurry, again the bleaching of this color contamination slurry, make the mixed slurry of straw and cornstalk, the method for making of above-mentioned wood pulp is to get the commercial wood pulp pulpboard, with the making beating of double plate mill, makes wood pulp.
The present invention adopts cornstalk and the mixed preparation herbaceous plant slurry that floats of straw list steaming, with only comparing with the wood pulp mixing and with the method for preparing cultural paper with single rice straw pulp in the prior art, has the following advantages:
1. the strength ratio rice straw pulp of the slurry that makes of cornstalk is good, when being mixed with wood pulp with straw and the mixed slurry of cornstalk and use paper pulp, can reduce the higher wood pulp consumption of price, the expense of reduction papermaking;
2. the strength ratio rice straw pulp of the slurry that makes of cornstalk is good, and the performance of the cultural paper of producing is good, particularly the deflection height;
3. the ash content in the cornstalk is few, and the processing performance in washing, purification and the screening is good, improves the operating efficiency of washing, purification and screening installation; In addition
4. cornstalk does not remove marrow, not disleaf, does not cut the tip, does not increase the processing step in the slurrying;
5. in washing, purification and the screening of the marrow in the cornstalk in pulping process, major part can separated be gone out, and can contain a certain amount of cornstalk marrow in the straw of making and the mixed slurry of cornstalk, makes the bulk of the cultural paper of producing good.
Below in conjunction with drawings and Examples, the present invention is further described.
Description of drawings
Fig. 1 is the process flow diagram that straw and cornstalk mix the method for slurry papermaking.
The specific embodiment
Among Fig. 1, the method that straw and cornstalk mix slurry papermaking has following step: be water content that 15%～30% straw and cornstalk are used chaffcutter 1 respectively earlier, 2 are chopped into 3～5 millimeters tablet, straw and cornstalk tablet are put into rotary spherical digester 3 respectively, in 4, at rotary spherical digester 3, add steaming preparation NaOH respectively in 4 and sodium sulfite carries out boiling, during boiling, cooking pressure 0.5～0.6Mpa, 150～160 ℃ of boiling temperatures, the alkali charge in NaOH of cornstalk is higher by 2%～3% than the alkali charge in NaOH of straw, straw and cornstalk tablet after the boiling are respectively spurted in the same blow tank 5, make straw and cornstalk tablet after the boiling in blow tank, be mixed into mixed material, to through spurting the mixed material that in a series of washings, purify, washing in the screening installation 6, purify, screening, make natural color pulp, again this color contamination slurry is used hypochlorite bleaching through bleaching equipment 7, make straw and cornstalk and mix slurry; Other gets the commercial wood pulp pulpboard, with 8 making beating of double plate mill, make wood pulp, the straw of making and cornstalk are mixed slurry and the wood pulp made is hybridly prepared into that straw and cornstalk mix slurry and wood pulp and uses paper pulp in stock proportioner 9, with and on paper machine 10, produce cultural paper with paper pulp.
Above-mentioned cornstalk is not removing marrow, not disleaf, do not cut the whole stalk of corn stem of the tip after breaking off with the fingers and thumb of farmland harvesting removed corncob.
With straw and cornstalk batching the time, the weight of the cornstalk tablet of chopping be chopping straw tablet weight 20%～50%, straw and cornstalk mix slurry and wood pulp and with the bone dry fiber in the paper pulp in, the weight of wood pulp bone dry fiber accounts for 30%～40%.
Claims (2)
1. the method for the mixed slurry of a straw and cornstalk papermaking comprises with the herbaceous plant slurry going out with the wood pulp mixed preparing and use paper pulp, then with and with paper pulp papermaking on paper machine, the method for making of above-mentioned wood pulp is to get the commercial wood pulp pulpboard, grind with double plate and pull an oar, the wood pulp of making,
It is characterized in that:
Above-mentioned herbaceous plant slurry is to steam mixed straw and the mixed slurry of cornstalk of preparing that float with cornstalk and straw list,
Above-mentioned cornstalk is not removing marrow, not disleaf, do not cut the whole stalk of corn stem of the tip after breaking off with the fingers and thumb of farmland harvesting removed corncob,
The method for making that above-mentioned straw and cornstalk mix slurry is:
Earlier straw and cornstalk are chopped into respectively 3～5 millimeters tablet with chaffcutter,
Then the straw tablet of chopping and the cornstalk tablet of chopping are put into rotary spherical digester respectively, put into steaming preparation NaOH and sodium sulfite boiling in the rotary spherical digester,
Again straw and cornstalk after the boiling are respectively spurted in the same blow tank, make straw and cornstalk tablet after the boiling in blow tank, be mixed into mixed material,
To washing, purify, screen through spurting the mixed material that, make this color contamination slurry,
The bleaching of this color contamination slurry, make the mixed slurry of straw and cornstalk again.
2. mix the method for starching papermaking by described straw of claim 1 and cornstalk, it is characterized in that: the weight of the cornstalk tablet of described chopping be the chopping the straw tablet weight 20%～50%, straw and cornstalk mix slurry and wood pulp and with the bone dry fiber in the paper pulp in, the weight of wood pulp bone dry fiber accounts for 30%～40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020577 CN1699687A (en) | 2004-05-20 | 2004-05-20 | Paper-making method using straw and corn stalk mixed pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020577 CN1699687A (en) | 2004-05-20 | 2004-05-20 | Paper-making method using straw and corn stalk mixed pulp |
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| Publication Number | Publication Date |
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| CN1699687A true CN1699687A (en) | 2005-11-23 |
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| CN 200410020577 Pending CN1699687A (en) | 2004-05-20 | 2004-05-20 | Paper-making method using straw and corn stalk mixed pulp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760988B (en) * | 2008-11-28 | 2013-04-24 | 山东和润浆纸有限公司 | Mixed pulp material and cultural paper prepared from the same |
| CN101760982B (en) * | 2008-11-28 | 2014-04-02 | 山东福荫造纸环保科技有限公司 | Mixed pulp with high bulk and paper having same |
-
2004
- 2004-05-20 CN CN 200410020577 patent/CN1699687A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760988B (en) * | 2008-11-28 | 2013-04-24 | 山东和润浆纸有限公司 | Mixed pulp material and cultural paper prepared from the same |
| CN101760982B (en) * | 2008-11-28 | 2014-04-02 | 山东福荫造纸环保科技有限公司 | Mixed pulp with high bulk and paper having same |
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