CN101037847A - Process for paper-making pulping with NaOH-AQ method - Google Patents
Process for paper-making pulping with NaOH-AQ method Download PDFInfo
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- CN101037847A CN101037847A CN 200610046093 CN200610046093A CN101037847A CN 101037847 A CN101037847 A CN 101037847A CN 200610046093 CN200610046093 CN 200610046093 CN 200610046093 A CN200610046093 A CN 200610046093A CN 101037847 A CN101037847 A CN 101037847A
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Abstract
The present invention relates to pulping process using NaOH-AQ method, by using jerusalem artichoke stalk as a raw material. Said method is suitable for production of culture paper such as offset printing paper, paint base paper, writing paper, decorative paper, and the like. The production prepared by the method has merits that the pulp consumption per ton paper is low and the paper prepared has high smoothness, excellent gloss, delicate surface, high strength, excellent printability, and the like.
Description
Technical field
The present invention relates to utilize the technology of NaOH-AQ method pulping and paper-making, specifically a kind of method of NaOH-AQ method paper-making pulping.
Background technology
Jerusalem artichoke is a kind of perennial herb cultivated plant, calls to be Jerusalem artichoke, Jerusalem artichoke, taro seedling, and it is the composite family Helianthus that section belongs to, formal name used at school Helianthus tuberosus Linn.Originate in the North America, now all there is plantation in areas such as China Hebei, northeast, Shandong, Henan, northwest, Sichuan, contain abundant synanthrin composition in its piece root, can cooked food or salt marsh be salted vegetables.The jerusalem artichoke bar is a plant on the ground, and cane is upright, and branch is arranged at top, general high 1.5～2.0m.
Summary of the invention
The object of the present invention is to provide a kind of method of NaOH-AQ method paper-making pulping, the paper that is made by this technology is applicable to the production of cultural papers such as offset printing paper, and its product has that ton paper pulp consumption is low, the smoothness height of paper, the advantage that glossiness is good, the surface is fine and smooth, intensity is high, printability is good.
For achieving the above object, the technical solution used in the present invention is:
A kind of method of NaOH-AQ method paper-making pulping, the raw material that is adopted is a jerusalem artichoke stalk.
Concrete technological parameter is: jerusalem artichoke stalk boiling jerusalem artichoke stalk 3～5 hours in the multiple tank boiling vessel, and keeping temperature is 170～180 ℃, the cooking liquor ratio is 1: 5.5 (mass ratio of solid-liquid); The NaOH weight consumption is 20～30%, and anthraquinone (AQ) weight consumption is 0.05%.
The present invention is that raw material is made paper pulp with the jerusalem artichoke stalk, can utilize the string resource fully, improves the comprehensive utilization value of jerusalem artichoke bar plantation.
Description of drawings
Fig. 1 is a jerusalem artichoke bar cross-sectional view; As seen from the figure: the xylem fibre-bearing cell of jerusalem artichoke bar, vessel element, components such as ray cell and wood radiaftive rays parenchyma cell, the fiber finer of outer skin zone and growing, the longest fiber is 2.21mm, fiber near marrow is shorter, its minimum of a value is 0.22mm, 0.4mm the percentage composition of following fiber fines has reached about 43%, the fiber length distribution frequency is mainly in the scope of 0.35～0.82mm, the vessel element volume is bigger, arrangement mode with single hole or multiple hole is distributed between two wood radiaftive rays, the relative broad of volume ratio that wood radiaftive rays and wood radiaftive rays parenchyma cell occupy in the plant cross section.
The specific embodiment
Described jerusalem artichoke stalk is picked up from the southern areas, Ningxia, and for annual, full stalk length overall 1.5～2.0m is a test raw material with whole strain sample.Except that behind the marrow, it is cut into the material section of 25 * 20 * 30mm through artificial.After raw material is air-dry, remove dust and impurity with sieve, the storage on sieve top is standby.
Jerusalem artichoke bar marrow Determination on content: with whole strain sample is raw material, respectively gets 10 sections by its upper and lower part respectively, and the test portion upper diameter is 11～15mm, and lower diameter is 20～25mm.Except that behind the marrow it being separated, measure the marrow content of jerusalem artichoke bar through artificial.Jerusalem artichoke bar xylem content accounts for 93.1% of whole strain after measured, and marrow content is 6.9%.
The fiber properties of jerusalem artichoke bar: the homogeneity, length-width ratio, fiber core footpath, cell wall thickness, wall chamber that the fibre morphology of paper making raw material mainly is meant length, width, the length and width degree of fiber than and various heteroproteose cell constituent contents etc.Different fibrous raw materials has different separately fibre morphologies, and when selecting paper making raw material and estimating paper making raw material good and bad, fibre morphology is one of important basis.
Test adopts Kajaani FS-100 analyzer and microscope to measure the indexs such as fibre length, width, length-width ratio and fiber fines percentage composition of jerusalem artichoke bar.
The measurement microscope method is only measured the fibrocyte in the raw material, and other carefully assorted component is not counted in.
Adopt microscopic method that jerusalem artichoke stalk fiber length and width degree, fiber core footpath, wall thickness are measured.By Fig. 1 (jerusalem artichoke bar cross-sectional view) as can be known: the xylem fibre-bearing cell of jerusalem artichoke bar, components such as vessel element, ray cell and wood radiaftive rays parenchyma cell, the fiber finer of outer skin zone and growing, the longest fiber is 2.21mm, fiber near marrow is shorter, its minimum of a value is 0.22mm, and the percentage composition of the following fiber fines of 0.4mm has reached about 43%.
Adopt Kajaani FS-100 method to fibre length, stalk core part fiber length respectively frequency measure.0.2mm following fiber fines percentage composition is 9.98%, Fiber Distribution frequency at 0.20～0.82mm length range is 70.94%, the vessel element volume is bigger, arrangement mode with single hole or multiple hole is distributed between two wood radiaftive rays, the relative broad of volume ratio that wood radiaftive rays and wood radiaftive rays parenchyma cell occupy in the plant cross section.The measurement data that Kajaani FS-100 determination method provides has been represented the whole components in the raw material, comprises fibrocyte, fiber fines, parenchyma cell, epidermal cell and conduit etc., generally adopts the evaluation foundation of double length as fiber.
The average fiber length of jerusalem artichoke bar is 0.72mm, the fiber maximum is 2.21mm, minimum of a value is 0.22mm, it is 9.98% that Kajaani FS-100 measures the following fiber fines percentage composition of 0.2mm, Fiber Distribution frequency at 0.20～0.82mm length range is 70.94%, fiber quality belongs to the leaf wood category, the fiber quality that is better than the bar core xylem of artificial paper mulberry, but the content of porose conduit and the artificial paper mulberry of wood radiaftive rays ratio of component is big in jerusalem artichoke bar xylem organization, so the pulping yield of jerusalem artichoke bar can be lower than artificial paper mulberry.
The chemical composition of jerusalem artichoke bar
Chemical composition at plant material has important value to its utilization rationally, and how much content of cellulose can predict its yield rate when slurrying in the raw material; Required chemicals consumption when what of lignin content can be estimated boiling; Various extract Determination on content are known the height that contains fat, resin, wax class and solubility tannin and pigment in the raw material, and then can determine to adopt which kind of pulping process; The ash content of coal is meant calcium, silicon and the multiple mineral inorganic matter in the raw material, and the ash content of coal just affects the insulating properties of paper pulp and the filterability of rayon pulp.Jerusalem artichoke bar chemical constituents determination the results are shown in table 1, and provides the measurement result of artificial paper mulberry xylem, compares in the lump.
Chemical constituents determination result/the % of table 1 jerusalem artichoke bar and artificial paper mulberry xylem
| The jerusalem artichoke bar | Artificial paper mulberry xylem | |
| Moisture content ash cold water extract hot water extract 1.0%NaOH extract alcohol-benzene extractive poly-pentose Klasson lignin holocellulose | 8.69 3.33 19.30 20.52 39.10 2.75 16.08 18.44 62.39 | 5.4 1.32 8.63 10.35 26.5 1.31 21.64 18.07 73.09 |
As shown in Table 1: ash and various extract are all than artificial paper mulberry height in the jerusalem artichoke bar chemical composition, the Klasson lignin is suitable with artificial paper mulberry, and poly-pentose and holocellulose are all than artificial paper mulberry low 5～11%, this pulp yield that jerusalem artichoke bar system chemical pulp just is described is lower than artificial paper mulberry, and in the digesting technoloy alkali charge than artificial paper mulberry height, can judge that thus the jerusalem artichoke bar adopts the chemical pulping financial cost higher, profit margin is less, in view of the jerusalem artichoke bar only is the byproduct of plantation jerusalem artichoke, in order fully utilize the suggestion employing high yield cooking technology packaging group paper of manufacturing paper with pulp.
The slurrying of NaOH-AQ method is adopted in this test, and optimizes optimum process condition.The cooking liquor ratio is 1: 5.5, and temperature is 170～180 ℃, and temperature retention time is 3～5h, and boiling is carried out in the multiple tank boiling vessel.The NaOH consumption is respectively 20%～30%, and anthraquinone (AQ) consumption is 0.05%.The slurrying result represents with unscreened yield, paper pulp KMnO4 value, the results are shown in table 2.
Table 2 jerusalem artichoke bar NaOH-AQ legal system sizing process condition and result
| Alkali charge/% | 20 | 22 | 25 | 30 |
| KMnO 4Value unscreened yield/% | 31.6 38.5 | 26.7 37 | 23.2 34.5 | 15.5 31 |
As can be seen from Table 2: alkali charge is 30% KMnO
4Value is 15.5, is lower than alkali charge and is 25% KMnO
4Value, unscreened yield is 31%.In order to explore the bleachability of jerusalem artichoke bar, so the alkali charge of this test employing 30% carries out scale-up.
Alkali charge to boiling and bleaching after physical properties of pulp measure: scale-up carries out in 15 liter electric heating rotating autoclaves, and temperature retention time is 3.5h.The chlorine dosage of employing 10% carries out the hypochlorite single stage bleaching, and bleaching concentration is 8%, and bleaching time is 3h, and bleaching temperature is 45 ± 2 ℃.Physical properties of pulp behind the boiling and bleaching is as shown in table 3:
Physical properties of pulp measurement result behind table 3 boiling and bleaching
| Dosage/% | 25 (alkali charges) | 30 (alkali charges) | 10 (chlorine dosages) |
| Beating degree/° SR quantitatively/g/m 2 | 16 83.7 | 17 80.2 | 45 78.0 |
| Tightness/g/cm 3Whiteness/% fracture length/km tearability/mN tear index/mNm 2/g | 0.696 19.83 4.85 289.3 3.47 | 0.707 24.15 4.66 382.5 4.77 | 0.758 70.21 7.43 304 3.90 |
As can be seen from Table 3: the whiteness after the bleaching of jerusalem artichoke bar chemical pulp is 70.21%ISO, fracture length is 7.43km, tear index is 3.90mNm2/g, the bleachability of paper pulp can be good, if do not consider slurrying cost and yield, can manufacture paper with pulp fully general cultural paper or join and copy high-grade paper of its bleached pulp quality.
Myelocyte volume in the jerusalem artichoke bar core accounts for 2/3rds of whole strain volume, no matter system chemical pulp or inhibition and generation mechanical pulp, this component not only consumes the slurrying medicine, but also can influence pulp quality.Therefore, can carry out dry method or wet method is removed marrow with reference to the technology of getting the raw materials ready of bamboo or bagasse.
By the myelocytic the ash content of coal of " analysiss of GB/T 2677.1-1996 paper making raw material " analysis is 11.61%, is nearly 4 times of jerusalem artichoke bar xylem.Adopt the inorganic composition in scanning electronic microscope and X-gamma ray spectrometer (SEM/EDAX) the technical measurement myelocyte ash, be mainly the Ca element, a spot of Si and Fe element, illustrate that jerusalem artichoke bar myelocyte is a Ca class inorganic mineral, the value that research and utilization is arranged, this is significant to realizing recycling economy.
NaOH-AQ method pulping process according to routine is operated.
Embodiment 1
With the jerusalem artichoke is raw material, utilizes the process conditions of NaOH-AQ method slurrying:
The boiling jerusalem artichoke stalk is 3 hours in the multiple tank boiling vessel, and keeping temperature is 170 ℃, and the cooking liquor ratio is 1: 5.5.When the NaOH weight consumption is 20%, the AQ weight consumption is that 0.05% o'clock unscreened yield is 38.5%, paper pulp KMnO
4Value is 31.6.
Embodiment 2
With the jerusalem artichoke is raw material, utilizes the process conditions of NaOH-AQ method slurrying:
The boiling jerusalem artichoke stalk is 3 hours in the multiple tank boiling vessel, and keeping temperature is 180 ℃, and the cooking liquor ratio is 1: 5.5.When the NaOH weight consumption is 22%, anthraquinone (AQ) weight consumption is that 0.05% o'clock unscreened yield is 37%, paper pulp KMnO
4Value is 26.7.
Embodiment 3
With the jerusalem artichoke is raw material, utilizes the process conditions of NaOH-AQ method slurrying:
The boiling jerusalem artichoke stalk is 5 hours in the multiple tank boiling vessel, and keeping temperature is 170 ℃, and the cooking liquor ratio is 1: 5.5.When the NaOH weight consumption is 30%, anthraquinone (AQ) weight consumption is that 0.05% o'clock unscreened yield is 31%, paper pulp KMnO
4Value is 15.5.
Embodiment 4
With the jerusalem artichoke is raw material, utilizes the process conditions of NaOH-AQ method slurrying:
The boiling jerusalem artichoke stalk is 5 hours in the multiple tank boiling vessel, and keeping temperature is 180 ℃, and the cooking liquor ratio is 1: 5.5.When the NaOH weight consumption is 25%, anthraquinone (AQ) weight consumption is that 0.05% o'clock unscreened yield is 34.5%, paper pulp KMnO
4Value is 23.2.
Claims (2)
1. the method for a NaOH-AQ method paper-making pulping, it is characterized in that: the raw material that is adopted is a jerusalem artichoke stalk.
2. method according to claim 1 is characterized in that: jerusalem artichoke stalk boiling jerusalem artichoke stalk 3～5 hours in the multiple tank boiling vessel, and keeping temperature is 170～180 ℃, the cooking liquor ratio is 1: 5.5; The NaOH weight consumption is 20～30%, and the anthraquinone weight consumption is 0.05%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277775A (en) * | 2010-10-27 | 2011-12-14 | 山东博瑞格生物资源制品有限公司 | Method for making paper pulp by using ginger seedling and paper pulp made by using method |
| WO2016135463A1 (en) * | 2015-02-24 | 2016-09-01 | Filer, Annabelle | Agricultural fibre-based paper |
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2006
- 2006-03-17 CN CN 200610046093 patent/CN101037847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277775A (en) * | 2010-10-27 | 2011-12-14 | 山东博瑞格生物资源制品有限公司 | Method for making paper pulp by using ginger seedling and paper pulp made by using method |
| WO2016135463A1 (en) * | 2015-02-24 | 2016-09-01 | Filer, Annabelle | Agricultural fibre-based paper |
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