CN101298700B - Method for preparing bamboo pulp for cellulose viscose and products thereof - Google Patents
Method for preparing bamboo pulp for cellulose viscose and products thereof Download PDFInfo
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Abstract
The invention relates to a manufacturing method for a bamboo pulp used for viscose fiber and a product thereof. The method includes material preparation, boiling, alkaline stewing, pulp washing, whitening and manufacturing. The method is characterized in that the detailed process of the boiling process is that: firstly the temperature is raised to 130 to 150 DEG C, the temperature is preserved for 50 to 70 minutes, then the temperature is raised to 165 to 175 DEG C and the raised temperature is preserved for 120 to 180 minutes. The bamboo pulp manufactured by the method of the invention include 79 to 91.2 percent of alpha cellulose, 3.8 to 6 percent of hemicellulose and 5 to 15 percent of water, and the staphyloccocus aureus can be reduced by more than 85 percent. The technique of the method of the invention is comparatively simple and the pollution can be reduced and the bamboo pulp manufactured has better antibiotic capability.
Description
Technical field
The present invention relates to manufacture method of a kind of bamboo pulp and products thereof, specifically, the present invention relates to manufacture method of a kind of bamboo pulp for cellulose viscose and products thereof.
Background technology
Fiber generally can be divided into natural fabric and chemical fibre, and chemical fibre can be further divided into artificial fibre and synthetic fiber.The output of synthetic fiber accounts for a big chunk of whole chemical fibre output, but its production is subjected to the restriction of coal, petroleum resources, in traditional energy resource today of shortage day by day, people have to the sight of seeking fibrous raw material is fallen back on the artificial fibre again.
Regenerated celulose fibre is a kind of in the artificial fibre, and it is produced the history in more than 100 year.Pulp is the raw material that is used for producing regenerated celulose fibre, and in China, the resource of cotton is abundanter, and a lot of cotton linters are used to make the viscose pulp, makes viscose again and is applied in field such as clothes.CN1088129 discloses a kind of technology of utilizing bamboo wood to produce cellulose viscose pulp, can utilize bamboo wood to produce bamboo pulp, its technological process is: get the raw materials ready, blank, screen, wash material, prehydrolysis, wash material, boiling, batch turning, wash material, screen, discongest, desanding, concentrate, chlorination, wash material, alkali refining, wash material, bleach, wash material, acid treatment, wash material, desanding, concentrate, manufacture paper with pulp.This technique process is comparatively complicated, and production efficiency is difficult to be further enhanced, and the pulp of producing does not have tangible antibiotic property.
Along with the development of society, consumer demand not only requires clothes endurable also in continuous lifting, more requires it to possess effect beautiful and comfortable, antibiotic body-building.The fiber made from cotton, wood pulps does not have bacteria resistance function, be because do not have antibacterial substance in its pulp, and bamboo itself contains antibacterial functions, and how the biocidal property with bamboo wood is kept in the pulp, be applied on the fiber, and be a problem that merits attention.CN1184374 discloses a kind of production technology of pure natural antibacterial bamboo paste, comprise and get the raw materials ready, boiling, blowing, washing, desanding, concentrate, chlorination, alkali treatment, hypochlorite bleach, washing, concentrate, manufacture paper with pulp, it is characterized in that get the raw materials ready and boiling between increased pretreatment process, the technological parameter of this pretreatment process is: liquor ratio=1: 1.0-5.0, intensification condition: be warming up to 120-140 ℃ by normal temperature, heating-up time is 45-75 minute, exhaust 5-20 minute, be warming up to 120-140 ℃ again, be incubated 4-6 hour.The pretreatment process time of this technology is longer, needs about 5～7 hours, and the antibiotic property of pulp does not reach very high standard yet.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of manufacturing to have the method and the bamboo pulp for cellulose viscose obtained by this method of the bamboo pulp for cellulose viscose of excellent anti-bacterium capability.
In order to realize purpose of the present invention, a kind of manufacture method of bamboo pulp for cellulose viscose is provided, comprise get the raw materials ready, poach, alkaline cooking, pulp washing, desanding, concentrate, bleaching, desanding, concentrate and manufacture paper with pulp.It is characterized in that described poach is meant: at first be warming up to 130-150 ℃, be incubated 50-70 minutes, then be warming up to 165-175 ℃, be incubated 120-180 minutes.Concrete operation method and technological parameter are as follows:
Get the raw materials ready: will select for use the bamboo wood of production made fiber pulp to pulverize (cut-out), through purifying, screening, remove therebetween hetero moiety physical property impurity, be specially and at first bamboo wood be cut into the fritter that is about 20-30mm, in the boiling vessel of packing into after again its process further being screened and simply washed.
Poach: at first carry out poach before the boiling, this poach is very main and necessary, is its principal security functional and the minimizing environmental pollution, also is essential condition of the present invention.
What this patent adopted is the staged boiled process of different temperatures, i.e. phase process under continuous elevated temperature condition.Be specially and earlier in boiling vessel, add the bamboo raw material and weight is the water of 2 times of over dry raw material and is warming up to 130-150 ℃, be incubated 50-70 minutes, on the basis of this holding temperature, further be warming up to 165-175 ℃ then, be incubated 120-180 minutes, the intact back of poach band pressure liquid.
Because bamboo wood itself is made up of fibre bundle, lignin, pectin and starch etc., its content of lignin 20-30%, ash 1-3%, pentosan 16-21%, its fiber is elongated simultaneously, hard straight, thick walled fiber is many, and lumen is narrow, the fibr tissue densification, the outside also has hard hard epidermis, make common pre-hydrolysis method carry out the impurity extracting than difficult to it, adopt the staged boiled process of different temperatures, can make its waste liquid COD 80000mg/l, colourity〉10000 times, Impurity removal that will be harmful most possibly to cellulose pulp production.
Boiling: can adopt the alkaline cooking as soda processes, sulfate process, oxonium base method etc., preferably adopt soda processes, concrete parameter is: in NaOH, total alkali content is 16-26% of over dry bamboo material; Liquor ratio 1:2.5-3.5; 150-240 minutes heating-up times, 155-175 ℃ of holding temperatures, temperature retention time 120-180 minutes.Be blowing then, the slurry that soda boiling finishes is emitted from boiling vessel.
Owing to adopted method different and common prehydrolysis, raffinate COD after its soda boiling〉180000mg/l, colourity〉60000 times.
Pulp washing: the slurry after adopting wash engine to soda boiling washs, and makes the residual alkali concn that washs disposed slurry less than 0.05g/m3.Because the boiling raffinate concentration in the slurry is higher, can carry out carrying out washing treatment easily, make raffinate in the slurry to reach minimum simultaneously, reduced pollution to water in the technology of back, can improve the recycling rate of waterused of water.
Also can carry out desanding, concentrate slurry behind the pulp washing: the physical property impurity that uses sand removing machine not remove be removed, and to make slurry concentration with thickener be 3-3.5%.
Bleaching: can adopt one section hypochlorite bleaching or two sections hypochlorite bleachings, adjust the degree of polymerization of bamboo pulp, satisfy the production requirement of fiber, reach the whiteness requirement of pulp simultaneously.One section bleaching: 40-45 ℃ of bleaching temperatures, chlorine dosage 0.2-0.4g/l, bleaching time 30-180 minutes; Second stage bleaching: 40-45 ℃ of bleaching temperatures, chlorine dosage 0.15-0.3g/l, bleaching time 30-180 minutes.
Also can further carry out desanding, concentrate after the bleaching slurry, manufacture paper with pulp then: will bleach disposed slurry and carry out further desanding, concentrate, making slurry concentration is 3-3.5%, manufactures paper with pulp on pulp machine then, squeeze successively, dry, cut on request at last, metering packing.
The bamboo pulp for cellulose viscose that makes by method of the present invention, its composition comprises alpha cellulose 79-91.2%, hemicellulose 3.8-6%, moisture 5-15%, this bamboo pulp is through the test of AATCC100-1998 biocidal property examination criteria, and the slip of its staphylococcus aureus is greater than 85%.
Beneficial effect of the present invention is that the bamboo pulp that method of the present invention makes has good anti-microbial property.
CN1184374 discloses a kind of production technology of pure natural antibacterial bamboo paste, it is characterized in that get the raw materials ready and boiling between increased pretreatment process, the technological parameter of this pretreatment process is: liquor ratio=1: 1.0-5.0, intensification condition: be warming up to 120-140 ℃ by normal temperature, heating-up time is 45-75 minute, exhaust 5-20 minute, be warming up to 120-140 ℃ again, be incubated 4-6 hour.This technology is compared with technology of the present invention, something in common is all to adopt 2 step intensification poach, but the boiled process of CN1184374 is first temperature-rise period by 45-75 minute rises to 120-140 ℃ with temperature, exhaust is 5-20 minutes then, insulation after being warming up to 120-140 ℃ again, the present invention then is insulation after being warming up to 130-150 ℃ earlier, insulation once more after continuing to be warming up to 165-175 ℃ on 130-150 ℃ the basis then.
The present inventor finds by repetition test, poach under 130-150 ℃ temperature, can make pectin, soluble starch hydrolysis stripping gradually in the raw material, make that fine and close hard epidermis is destroyed fully, make antibacterial material and fiber have the process of a combination, not being destroyed, is exhaust cooling and the boiled process of CN1184374 is warming up to 120-140 ℃, can't reach poach effect of the present invention.The present invention continues to be warming up to 165-175 ℃ of poach on 130-150 ℃ basis, compare with CN1184374 and shortened the technology required time greatly.
The present invention is because chemical fibre mainly is the cellulose of appliable plant, it is relatively stricter to the requirement of pulp, it is the alpha cellulose height, ash, iron part, hemicellulose, the content requirement of lignin etc. is low, simultaneously, the culm bar is the major part that slurrying is used, in its bar except that the parenchymal tissue that contains ratio seldom, remainder is pulse tube fiber bundle of vertically arranging and the parenchymal tissue that surrounds fibre bundle, add the outer hard epidermis of cane, form a natural cover for defense, influenced the passage of its chemicals infiltration in tissue, thereby the effect of common pre-hydrolysis method is adopted in influence, influences the functional of its pulp that makes.Simultaneously,, will influence the extraction of raffinate after the soda boiling, make more impurity be retained in the slurry, cause on the one hand and polluted a large amount of water sources of postorder, make stock quality time again if the impurity stripping of bamboo wood is not thorough.
Adopt the stage poach of different temperatures of the present invention, it at first is the poach of one section low temperature, promptly under 130-150 ℃ the temperature, make pectin, soluble starch hydrolysis stripping gradually in the raw material, make that fine and close hard epidermis is destroyed fully, make antibacterial material and fiber have the process of a combination, be not destroyed, also lay a good foundation simultaneously for poach and soda boiling under 165-175 ℃ of conditions of high temperature of second stage, the COD of poach raffinate can reach 120000mg/l, and colourity can reach 30000 times; The COD of boiling raffinate can reach 220000mg/l, and colourity can reach 100000 times.Slurry passes through processing steps such as soda boiling afterwards again, can obtain having the bamboo pulp of producing viscose that can be used in of good anti-microbial property.
In addition,, can carry out carrying out washing treatment easily, make raffinate in the slurry simultaneously, reduce pollution, can improve the recycling rate of waterused of water water in the technology of back to reach minimum owing to adopt the concentration of poach raffinate of the present invention and soda boiling raffinate all higher.Technology of the present invention in addition is also simple relatively.
Below in conjunction with the specific embodiment the present invention is described in further detail, following embodiment is used to understand the present invention, and unrestricted the present invention.
The specific embodiment
Embodiment 1
Get the raw materials ready: at first bamboo wood is cut into the fritter that is about 20-30mm, in the boiling vessel of packing into after again its process further being screened and simply washed.
Poach: adding bamboo raw material and weight are the water of 2 times of over dry raw material and are warming up to 130 ℃ in boiling vessel, are incubated 60 minutes, further are warming up to 175 ℃ then on the basis of this holding temperature, are incubated 120 minutes, the intact back of poach band pressure liquid.The COD of poach raffinate is 80000mg/l, and colourity is 10000 times.
Boiling: soda processes is adopted in the boiling of present embodiment, and concrete parameter is: in NaOH, total alkali content is 21% of over dry bamboo material; Liquor ratio 1:3.5; 150 minutes heating-up times, 165 ℃ of holding temperatures, temperature retention time 180 minutes.The COD of boiling raffinate is 200000mg/l, and colourity is 80000 times.
Pulp washing: the slurry after adopting wash engine to soda boiling washs, and makes the residual alkali concn that washs disposed slurry less than 0.05g/m3.
Desanding, concentrate: the physical property impurity that uses sand removing machine not remove is removed, and to make slurry concentration with thickener be 3-3.5%.
Bleaching: adopt one section hypochlorite bleaching or two sections hypochlorite bleachings, one section bleaching: 40 ℃ of bleaching temperatures, chlorine dosage 0.3g/l, bleaching time 180 minutes; Second stage bleaching: 40 ℃ of bleaching temperatures, chlorine dosage 0.23g/l, bleaching time 30 minutes.
Manufacture paper with pulp: will bleach disposed slurry and on pulp machine, manufacture paper with pulp, and squeeze successively, dry, and cut on request at last, metering packing.
By the bamboo pulp for cellulose viscose that present embodiment makes, its composition is: alpha cellulose 79%, hemicellulose 6%, moisture 15%, other compositions＜0.1%
Embodiment 2
Get the raw materials ready: at first bamboo wood is cut into the fritter that is about 20-30mm, in the boiling vessel of packing into after again its process further being screened and simply washed.
Poach: adding bamboo raw material and weight are the water of 2 times of over dry raw material and are warming up to 140 ℃ in boiling vessel, are incubated 70 minutes, further are warming up to 165 ℃ then on the basis of this holding temperature, are incubated 150 minutes, the intact back of poach band pressure liquid.The COD of poach raffinate is 100000mg/l, and colourity is 20000 times.
Boiling: soda processes is adopted in the boiling of present embodiment, and concrete parameter is: in NaOH, total alkali content is 26% of over dry bamboo material; Liquor ratio 1:2.5; 195 minutes heating-up times, 175 ℃ of holding temperatures, temperature retention time 120 minutes.The COD of boiling raffinate is 220000mg/l, and colourity is 100000 times.
Pulp washing: the slurry after adopting wash engine to soda boiling washs, and makes the residual alkali concn that washs disposed slurry less than 0.05g/m3.
Desanding, concentrate: the physical property impurity that uses sand removing machine not remove is removed, and to make slurry concentration with thickener be 3-3.5%.
Bleaching: adopt one section hypochlorite bleaching or two sections hypochlorite bleachings, one section bleaching: 42 ℃ of bleaching temperatures, chlorine dosage 0.4g/l, bleaching time 90 minutes; Second stage bleaching: 42 ℃ of bleaching temperatures, chlorine dosage 0.3g/l, bleaching time 120 minutes.
Desanding, concentrate, manufacture paper with pulp: will bleach disposed slurry and carry out further desanding, concentrate, and on pulp machine, manufacture paper with pulp then, and squeeze successively, dry, and cut on request at last, metering packing.
By the bamboo pulp for cellulose viscose that present embodiment makes, its composition is: alpha cellulose 85%, hemicellulose 5%, moisture 10%, other compositions＜0.1%
Embodiment 3
Get the raw materials ready: at first bamboo wood is cut into the fritter that is about 20-30mm, in the boiling vessel of packing into after again its process further being screened and simply washed.
Poach: adding bamboo raw material and weight are the water of 2 times of over dry raw material and are warming up to 150 ℃ in boiling vessel, are incubated 50 minutes, further are warming up to 170 ℃ then on the basis of this holding temperature, are incubated 180 minutes, the intact back of poach band pressure liquid.The COD of poach raffinate is 120000mg/l, and colourity is 30000 times.
Boiling: soda processes is adopted in the boiling of present embodiment, and concrete parameter is: in NaOH, total alkali content is 16% of over dry bamboo material; Liquor ratio 1:3; 240 minutes heating-up times, 155 ℃ of holding temperatures, temperature retention time 150 minutes.The COD of boiling raffinate is 180000mg/l, and colourity is 60000 times.
Pulp washing: the slurry after adopting wash engine to soda boiling washs, and makes the residual alkali concn that washs disposed slurry less than 0.05g/m3.
Desanding, concentrate: the physical property impurity that uses sand removing machine not remove is removed, and to make slurry concentration with thickener be 3-3.5%.
Bleaching: adopt one section hypochlorite bleaching or two sections hypochlorite bleachings, one section bleaching: 45 ℃ of bleaching temperatures, chlorine dosage 0.2g/l, bleaching time 30 minutes; Second stage bleaching: 45 ℃ of bleaching temperatures, chlorine dosage 0.15g/l, bleaching time 180 minutes.
Desanding, concentrate, manufacture paper with pulp: will bleach disposed slurry and carry out further desanding, concentrate, and on pulp machine, manufacture paper with pulp then, and squeeze successively, dry, and cut on request at last, metering packing.
By the bamboo pulp for cellulose viscose that present embodiment makes, its composition is: alpha cellulose 91.2%, hemicellulose 3.8%, moisture 5%, other compositions＜0.1%
Comparative example 4
The antibiotic property of the pulp that this comparative example obtains with the disclosed bamboo pulp of general bamboo pulp, CN1088129 and CN1184374 and by the embodiment of the invention compares, and is listed as follows (table 1):
| Bamboo pulp | General bamboo pulp | CN1088129 | CN1184374 | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The Staphylococcus aureus slip | 60％ | 70％ | 75％ | 85％ | 90％ | 95％ |
Table 1
Annotate: AATCC100-1998 standard is adopted in the antibiotic property test.
This shows, the present invention can remove lignin and other impurity in the raw material more completely owing to adopted the method for ladder-elevating temperature poach, and antibacterial material and fiber have the process of a combination simultaneously, be not destroyed, thereby the bamboo pulp that obtains has good anti-microbial property.
Claims (4)
1. the manufacture method of a bamboo pulp for cellulose viscose, comprise get the raw materials ready, poach, alkaline cooking, pulp washing, bleach and manufacture paper with pulp, it is characterized in that,
The concrete technology of described poach is: at first be warming up to 130～150 ℃, be incubated 50～70 minutes, then be warming up to 165～175 ℃, be incubated 2～3 hours;
Described alkaline cooking adopts soda processes, and concrete parameter is: in NaOH, total alkali content is 16～26% of over dry bamboo material; Liquor ratio 1: 2.5～3.5; 150～240 minutes heating-up times, 155～175 ℃ of holding temperatures, temperature retention time 120～180 minutes;
One section hypochlorite bleaching or two sections hypochlorite bleachings are adopted in described bleaching, wherein, and one section bleaching: 40～45 ℃ of bleaching temperatures, chlorine dosage 0.2～0.4g/l, bleaching time 30～180 minutes; Second stage bleaching: 40～45 ℃ of bleaching temperatures, chlorine dosage 0.15～0.3g/l, bleaching time 30～180 minutes.
2. the manufacture method of a kind of bamboo pulp for cellulose viscose according to claim 1 is characterized in that, the raffinate COD of described poach is 80000-120000mg/l, and colourity is 10000-30000 times.
3. the manufacture method of a kind of bamboo pulp for cellulose viscose according to claim 1 is characterized in that, the raffinate COD of described alkaline cooking is 180000-220000mg/l, and colourity is 60000-100000 times.
4. bamboo pulp that makes by the manufacture method of any described bamboo pulp for cellulose viscose of claim 1-3, comprise alpha cellulose 79-91.2%, hemicellulose 3.8-6%, moisture 5-15%, it is characterized in that, described bamboo pulp is through the test of AATCC100-1998 biocidal property examination criteria, and the slip of its staphylococcus aureus is 85-95%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101020110A CN101298700B (en) | 2007-04-30 | 2007-04-30 | Method for preparing bamboo pulp for cellulose viscose and products thereof |
| PCT/CN2007/003645 WO2008074220A1 (en) | 2006-12-18 | 2007-12-18 | A preparation method of a bamboo pulp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101020110A CN101298700B (en) | 2007-04-30 | 2007-04-30 | Method for preparing bamboo pulp for cellulose viscose and products thereof |
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| CN101298700A CN101298700A (en) | 2008-11-05 |
| CN101298700B true CN101298700B (en) | 2010-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105150328B (en) * | 2015-07-20 | 2017-07-14 | 国际竹藤中心 | A kind of method of parenchyma cell and fiber separation in bamboo wood |
| CN107142521B (en) * | 2017-05-31 | 2023-01-31 | 黑龙江天之草种业科技有限公司 | Automatic operation system and method for biological refined herbaceous fibers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308160A (en) * | 2000-11-02 | 2001-08-15 | 河北吉藁化纤有限责任公司 | Technological process of producing viscose fiber size with bamboo and timber material |
| CN1410627A (en) * | 2002-09-16 | 2003-04-16 | 成都春天绿竹资源开发有限责任公司 | Production technology of pure natural antibacterial bamboo paste |
| CN1410626A (en) * | 2002-09-16 | 2003-04-16 | 成都春天绿竹资源开发有限责任公司 | Production technology of pure natural antibacterial bamboo paste |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308160A (en) * | 2000-11-02 | 2001-08-15 | 河北吉藁化纤有限责任公司 | Technological process of producing viscose fiber size with bamboo and timber material |
| CN1410627A (en) * | 2002-09-16 | 2003-04-16 | 成都春天绿竹资源开发有限责任公司 | Production technology of pure natural antibacterial bamboo paste |
| CN1410626A (en) * | 2002-09-16 | 2003-04-16 | 成都春天绿竹资源开发有限责任公司 | Production technology of pure natural antibacterial bamboo paste |
Non-Patent Citations (5)
| Title |
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| JP特开2005-126871A 2005.05.19 |
| 华南工学院制浆机理科研组.制浆过程对浆粕细胞壁破坏情况的电镜观察.化纤与纺织技术 3.1981,(3),24-33. |
| 华南工学院制浆机理科研组.制浆过程对浆粕细胞壁破坏情况的电镜观察.化纤与纺织技术 3.1981,(3),24-33. * |
| 宋晓峰等.竹浆纤维－浆粕的制备研究.国际纺织导报 2.2005,(2),14-16,11. |
| 宋晓峰等.竹浆纤维-浆粕的制备研究.国际纺织导报 2.2005,(2),14-16,11. * |
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Effective date of registration: 20150617 Address after: Nine street 132115 Jilin city of Jilin Province Economic and Technological Development Zone No. 516-1 Patentee after: Jilin Chemical Fibres Co., Ltd. Address before: 052160 Gaocheng City, Hebei Province East Road No. 2 Patentee before: Hebei Jigao Chemical Fiber Co., Ltd. |