CN102154908A - Liquorice residue pulp and preparation method thereof - Google Patents
Liquorice residue pulp and preparation method thereof Download PDFInfo
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- CN102154908A CN102154908A CN 201110109763 CN201110109763A CN102154908A CN 102154908 A CN102154908 A CN 102154908A CN 201110109763 CN201110109763 CN 201110109763 CN 201110109763 A CN201110109763 A CN 201110109763A CN 102154908 A CN102154908 A CN 102154908A
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- pulp
- glycyrrhiza residue
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- LPLVUJXQOOQHMX-QWBHMCJMSA-N glycyrrhizinic acid Chemical group O([C@@H]1[C@@H](O)[C@H](O)[C@H](O[C@@H]1O[C@@H]1C([C@H]2[C@]([C@@H]3[C@@]([C@@]4(CC[C@@]5(C)CC[C@@](C)(C[C@H]5C4=CC3=O)C(O)=O)C)(C)CC2)(C)CC1)(C)C)C(O)=O)[C@@H]1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O LPLVUJXQOOQHMX-QWBHMCJMSA-N 0.000 title abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000004061 bleaching Methods 0.000 claims abstract description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 6
- 238000007670 refining Methods 0.000 claims abstract description 6
- LTINPJMVDKPJJI-UHFFFAOYSA-N iodinated glycerol Chemical group CC(I)C1OCC(CO)O1 LTINPJMVDKPJJI-UHFFFAOYSA-N 0.000 claims description 68
- 238000009835 boiling Methods 0.000 claims description 48
- 239000002002 slurry Substances 0.000 claims description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 35
- 238000010306 acid treatment Methods 0.000 claims description 15
- 238000009874 alkali refining Methods 0.000 claims description 13
- 239000007844 bleaching agent Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 8
- 230000009257 reactivity Effects 0.000 claims description 8
- 238000011282 treatment Methods 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000010411 cooking Methods 0.000 claims description 5
- 230000029087 digestion Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 4
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004155 Chlorine dioxide Substances 0.000 claims description 2
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 2
- 229920000297 Rayon Polymers 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000007781 pre-processing Methods 0.000 abstract 2
- 238000004537 pulping Methods 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 12
- 239000004576 sand Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 244000082204 Phyllostachys viridis Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- MPDGHEJMBKOTSU-YKLVYJNSSA-N 18beta-glycyrrhetic acid Chemical compound C([C@H]1C2=CC(=O)[C@H]34)[C@@](C)(C(O)=O)CC[C@]1(C)CC[C@@]2(C)[C@]4(C)CC[C@@H]1[C@]3(C)CC[C@H](O)C1(C)C MPDGHEJMBKOTSU-YKLVYJNSSA-N 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- MPDGHEJMBKOTSU-UHFFFAOYSA-N Glycyrrhetinsaeure Natural products C12C(=O)C=C3C4CC(C)(C(O)=O)CCC4(C)CCC3(C)C1(C)CCC1C2(C)CCC(O)C1(C)C MPDGHEJMBKOTSU-UHFFFAOYSA-N 0.000 description 1
- 244000303040 Glycyrrhiza glabra Species 0.000 description 1
- 235000006200 Glycyrrhiza glabra Nutrition 0.000 description 1
- 235000017443 Hedysarum boreale Nutrition 0.000 description 1
- 235000007858 Hedysarum occidentale Nutrition 0.000 description 1
- VTAJIXDZFCRWBR-UHFFFAOYSA-N Licoricesaponin B2 Natural products C1C(C2C(C3(CCC4(C)CCC(C)(CC4C3=CC2)C(O)=O)C)(C)CC2)(C)C2C(C)(C)CC1OC1OC(C(O)=O)C(O)C(O)C1OC1OC(C(O)=O)C(O)C(O)C1O VTAJIXDZFCRWBR-UHFFFAOYSA-N 0.000 description 1
- 102000007327 Protamines Human genes 0.000 description 1
- 108010007568 Protamines Proteins 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N benzo-alpha-pyrone Natural products C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 150000004775 coumarins Chemical class 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229960003720 enoxolone Drugs 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229930003935 flavonoid Natural products 0.000 description 1
- 150000002215 flavonoids Chemical class 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- LPLVUJXQOOQHMX-UHFFFAOYSA-N glycyrrhetinic acid glycoside Natural products C1CC(C2C(C3(CCC4(C)CCC(C)(CC4C3=CC2=O)C(O)=O)C)(C)CC2)(C)C2C(C)(C)C1OC1OC(C(O)=O)C(O)C(O)C1OC1OC(C(O)=O)C(O)C(O)C1O LPLVUJXQOOQHMX-UHFFFAOYSA-N 0.000 description 1
- 239000001947 glycyrrhiza glabra rhizome/root Substances 0.000 description 1
- 239000001685 glycyrrhizic acid Substances 0.000 description 1
- 229960004949 glycyrrhizic acid Drugs 0.000 description 1
- UYRUBYNTXSDKQT-UHFFFAOYSA-N glycyrrhizic acid Natural products CC1(C)C(CCC2(C)C1CCC3(C)C2C(=O)C=C4C5CC(C)(CCC5(C)CCC34C)C(=O)O)OC6OC(C(O)C(O)C6OC7OC(O)C(O)C(O)C7C(=O)O)C(=O)O UYRUBYNTXSDKQT-UHFFFAOYSA-N 0.000 description 1
- 235000019410 glycyrrhizin Nutrition 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229940048914 protamine Drugs 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- WNIFXKPDILJURQ-UHFFFAOYSA-N stearyl glycyrrhizinate Natural products C1CC(O)C(C)(C)C2CCC3(C)C4(C)CCC5(C)CCC(C(=O)OCCCCCCCCCCCCCCCCCC)(C)CC5C4=CC(=O)C3C21C WNIFXKPDILJURQ-UHFFFAOYSA-N 0.000 description 1
- 238000010407 vacuum cleaning Methods 0.000 description 1
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- Paper (AREA)
Abstract
The invention discloses liquorice residue pulp and a preparation method thereof; the preparation method comprises the following steps: liquorice residue is adopted as a raw material; the liquorice residue pulp is obtained by sequentially preprocessing, digesting, washing, desanding, refining with alkali, bleaching, processing with acid, washing with water and pulping the liquorice residue, wherein the preprocessing refers that the liquorice residue is cut off till the length is below 5cm, and then desanding of a dry desander is carried out on the liquorice residue and finally washing with water is carried out on the liquorice residue; the washing with water refers that black liquor in digested pulp is squeezed out, and then the digested pulp is washed with water of 50 to 60 DEG C in an absolute vacuum degree of 0.01 to 0.03 MPa; and after washing, the ash content of the pulp is less than or equal to 1.2w%, and the iron content of the pulp is less than or equal to 150mg/kg. The liquorice residue pulp which is produced by taking the liquorice residue as the raw material has high alpha cellulose content, low ash content, good reaction performance, simple production process, low material consumption, develops the source of the raw material of viscose pulp, reduces environmental pollution and increases the additional value of utilization of the liquorice residue.
Description
Technical field
The present invention relates to a kind of glycyrrhiza residue pulp and preparation method thereof, belong to chemical fiber field.
Background technology
Cotton linter and timber, bamboo wood are the main raw material(s) of viscose with pulp.At present, because of descending, the whole world and domestic cotton cultivated area cause the cotton undersupply, substantial appreciation of prices, cause the cotton linter price to rise, supply with and descend, viscose is also bigger with wood pulp, bamboo pulp breach, and the output steady-state growth of domestic viscose, thereby the pulling viscose demand fast rise of pulp, viscose has become to restrict the big factors that viscose develops with the scarcity of raw material of pulp, and it is problem anxious to be solved that the alternative materials of exploitation cotton linter, timber, bamboo wood is made the viscose pulp.
The chemical composition of Radix Glycyrrhizae is mainly glycyrrhizic acid, enoxolone, licorice root lactone, flavonoids and Coumarins etc., have invigorate the spleen and benefit qi, the function of cough-relieving apophlegmatic, clearing heat and detoxicating, coordinating the drug actions of a prescription, the pharmaceutical factory of traditional Chinese medicine extracts in the Radix Glycyrrhizae behind the useful component, the remaining glycyrrhiza residue that is.Contain in the glycyrrhiza residue and be not extracted clean traditional Chinese medicine ingredients and amino acid, protamine etc., but content maximum be cellulose, account for 30.78wt%.Utilization to glycyrrhiza residue at present only is confined to make fertilizer and animal feed, and addition is less, and all the other by discarded when rubbish, pollute to environment in a large number, have caused the significant wastage of resource simultaneously.
Summary of the invention
First technical problem to be solved by this invention is: at the deficiency that prior art exists, provide a kind of alpha cellulose content height that utilizes glycyrrhiza residue to make, the glycyrrhiza residue pulp that content of ashes is low, reactivity worth is good.
Second technical problem to be solved by this invention is: at the deficiency that prior art exists, provide that a kind of production technology is simple, supplies consumption is low, the method for alpha cellulose content height, content of ashes is low, reactivity worth is good glycyrrhiza residue pulp.
For solving above-mentioned first technical problem, technical scheme of the present invention is:
A kind of glycyrrhiza residue pulp, it is that feedstock production forms that described pulp adopts glycyrrhiza residue, the alpha cellulose content 〉=92wt% of described glycyrrhiza residue pulp, viscosity is 9.0～11.0mpa.s, ash content≤0.12wt%, iron branch≤30mg/kg, whiteness 〉=80%, little dust≤220mm
2/ kg, big dust≤1.0/m
2, reactivity worth≤120s.
For solving above-mentioned second technical problem, technical scheme of the present invention is:
A kind of preparation method of glycyrrhiza residue pulp, may further comprise the steps: with glycyrrhiza residue successively through preliminary treatment, boiling, washing, desanding, alkali refining, bleaching, acid treatment, wash and the step of manufacturing paper with pulp makes the glycyrrhiza residue pulp, described preliminary treatment is that glycyrrhiza residue is cut to below the length 5cm, washes after the desanding of dry type desander; Described washing is that the black liquor in the boiling disposed slurry is extruded, and is 0.01～0.03Mpa at the absolute vacuum degree then, washs ash content≤1.2wt% in the washing disposed slurry, iron branch≤150mg/kg with 50～60 ℃ water.
Wherein, add the alkali lye of counting 15～26wt% of relative over dry glycyrrhiza residue with NaOH during described boiling, the green oxygen that adds 0.05～1wt% of relative over dry glycyrrhiza residue, liquor ratio are 1:2.5～5, carry out boiling, cooking pressure 0.30 ± 0.03Mpa, 140～170 ℃ of boiling temperatures, digestion time 60～150min, temperature retention time 120～210min after the boiling, alpha cellulose content 〉=93wt% in the boiling slurry after the boiling, viscosity 11～16mpa.s.
Glycyrrhiza residue after will washing earlier before the described boiling is under 1:3.5～6,140～150 ℃ of conditions of temperature in liquor ratio, and insulation 60～120min carries out prehydrolysis under neutrallty condition.
94～99 ℃ of the extraction temperatures of described alkali refining, refining time 30～60min.
Described bleaching the time can add 3～7wt% of relative over dry slurry the bleaching agent hydrogen peroxide, add the sodium metasilicate of 3～5wt% of relative over dry slurry, the magnesium sulfate that adds 0.2～1wt% of relative over dry slurry, in temperature is 30～50 ℃, bleaching 20～60min, and bleaching disposed slurry viscosity is 9.0～11.0mpa.s.
Can also add bleaching agent chlorine dioxide or liquor natrii hypochloritis during described bleaching, adopt multistage or one section bleaching, bleaching time 30～100min contains alkali 10～100mg/L, residual chlorine dose 0.1～0.5g/L, and bleaching disposed slurry viscosity is 9.0～11.0mpa.s.
Add the acid amount during described acid treatment and be 0.05～1wt% of relative over dry slurry, acid treatment time 20～40min.
As a kind of improvement, the waste water of described each step reclaims behind the glycyrrhiza residue fiber in the waste water adverse current after filtration and is back to use operation and recycles, the black liquor of extruding after the described boiling is used to prepare boiling alkali lye, is used for preliminary treatment washing glycyrrhiza residue after the water after the described washing reclaims.
Owing to adopted technique scheme, the invention has the beneficial effects as follows:
1, the present invention carried out dry type desanding and washing to the raw material glycyrrhiza residue before boiling, significantly reduce the ash content in the raw material, iron and divided content, and adopt the hot water vacuum cleaning after the boiling, can remove saponified after the boiling better, prevent to produce a large amount of foams, therefore influence clean result, glycyrrhiza residue pulp ash content of producing and iron divide that content is low, whiteness is high, reactivity worth is good.
2, the present invention is raw material production glycyrrhiza residue pulp with the glycyrrhiza residue, the glycyrrhiza residue pulp alpha cellulose content height of producing, and production technology is simple, supplies consumption is low, product has kept glycyrrhiza residue part traditional Chinese medicine ingredients simultaneously, certain medicinal health effect is arranged, not only provide a kind of new raw material with pulp for viscose, the raw material sources of viscose have been opened up with pulp, and provide a kind of new application approach for a large amount of glycyrrhiza residues of handling, reduce environmental pollution, improved the added value of utilizing of glycyrrhiza residue.
3, the waste water of each step of the present invention reclaims behind the glycyrrhiza residue fiber in the waste water adverse current after filtration and is back to use operation and recycles, and has improved the product yield, has reduced to produce consuming.
The specific embodiment
Further set forth the present invention below in conjunction with specific embodiment.
Embodiment 1
Glycyrrhiza residue is cut to length 3cm, through desanding of dry type desander and washing, is 1:4 with the glycyrrhiza residue after the washing in liquor ratio, under 140 ℃ of conditions of temperature, insulation 120min, under neutrallty condition, carry out prehydrolysis, add the alkali lye of counting the 18wt% of relative over dry glycyrrhiza residue with NaOH then, the green oxygen that adds the 0.1wt% of relative over dry glycyrrhiza residue, liquor ratio is 1:3, carry out boiling, cooking pressure 0.28Mpa, 155～160 ℃ of boiling temperatures, digestion time 120min, temperature retention time 200min after the boiling, alpha cellulose content 93.5wt% in the boiling slurry after the boiling, viscosity 13.6mpa.s, after the boiling black liquor in the slurry is extruded, the black liquor recovery preparation boiling alkali lye of extruding, be 0.01Mpa at the absolute vacuum degree then, water with 50 ℃ washs, ash content 1.1wt% in the washing disposed slurry, iron divides 130mg/kg, blanking sand before carrying out earlier after the washing, carry out alkali refining after concentrating, 95 ℃ of the extraction temperatures of alkali refining, refining time 40min, bleach behind the alkali refining, the bleaching agent hydrogen peroxide that adds the 4wt% of relative over dry slurry, the sodium metasilicate that adds the 3.5wt% of relative over dry slurry, the magnesium sulfate that adds the 0.5wt% of relative over dry slurry, in temperature is 50 ℃, bleaching 50min, bleaching disposed slurry viscosity is 11.0mpa.s, the bleaching back adds the acid of the 0.2wt% of relative over dry slurry and carries out acid treatment, acid treatment time 40min, acid treatment finishes and is washed to neutrality, and washings reclaim and are used for preliminary treatment washing glycyrrhiza residue, carry out once back blanking sand after the washing again, after concentrating, manufacture paper with pulp then and make the glycyrrhiza residue pulp, the performance indications of gained glycyrrhiza residue pulp: alpha cellulose content 93wt%, viscosity is 10.8mpa.s, ash content 0.10wt%, iron divides 28mg/kg, whiteness 80%, little dust 220mm
2/ kg, big 1.0/m of dust
2, reactivity worth 110s.
Embodiment 2
Glycyrrhiza residue is cut to length 2cm, through desanding of dry type desander and washing, is 1:5 with the glycyrrhiza residue after the washing in liquor ratio, under 145 ℃ of conditions of temperature, insulation 100min, under neutrallty condition, carry out prehydrolysis, add the alkali lye of counting the 20wt% of relative over dry glycyrrhiza residue with NaOH then, the green oxygen that adds the 0.6wt% of relative over dry glycyrrhiza residue, liquor ratio is 1:3.5, carry out boiling, cooking pressure 0.30Mpa, 155～165 ℃ of boiling temperatures, digestion time 100min, temperature retention time 180min after the boiling, alpha cellulose content 93.2wt% in the boiling slurry after the boiling, viscosity 13.5mpa.s, after the boiling black liquor in the boiling disposed slurry is extruded, the black liquor of extruding filters back reuse preparation boiling alkali lye, be 0.02Mpa at the absolute vacuum degree then, water with 55 ℃ washs, ash content 1.05wt% in the washing disposed slurry, iron divides 140mg/kg, blanking sand before carrying out earlier after the washing, carry out alkali refining after concentrating, 96 ℃ of the extraction temperatures of alkali refining, refining time 50min, bleach behind the alkali refining, the bleaching agent hydrogen peroxide that adds the 5wt% of relative over dry slurry, the sodium metasilicate that adds the 3wt% of relative over dry slurry, the magnesium sulfate that adds the 0.8wt% of relative over dry slurry, in temperature is 40 ℃, bleaching 40min, bleaching disposed slurry viscosity is 10.9mpa.s, the bleaching back adds the acid of the 0.5wt% of relative over dry stock quality and carries out acid treatment, acid treatment time 30min, acid treatment finishes and is washed to neutrality, and washings filter the back recovery and are used for preliminary treatment washing glycyrrhiza residue, carry out once back blanking sand after the washing again, after concentrating, manufacture paper with pulp then and make the glycyrrhiza residue pulp, the performance indications of gained glycyrrhiza residue pulp: alpha cellulose content 92.2wt%, viscosity is 10.5mpa.s, ash content 0.11wt%, iron divides 22mg/kg, whiteness 81%, little dust 210mm
2/ kg, big 1.0/m of dust
2, reactivity worth 115s.
Embodiment 3
Glycyrrhiza residue is cut to length 2cm, through desanding of dry type desander and washing, is 1:6 with the glycyrrhiza residue after the washing in liquor ratio, under 150 ℃ of conditions of temperature, insulation 120min, under neutrallty condition, carry out prehydrolysis, add the alkali lye of counting the 25wt% of relative over dry glycyrrhiza residue with NaOH then, the green oxygen that adds the 0.8wt% of relative over dry glycyrrhiza residue, liquor ratio is 1:4.5, carry out boiling, cooking pressure 0.32Mpa, 160～170 ℃ of boiling temperatures, digestion time 80min, temperature retention time 150min after the boiling, alpha cellulose content 93wt% in the boiling slurry after the boiling, viscosity 12.8mpa.s, after the boiling black liquor in the boiling disposed slurry is extruded, the black liquor recovery preparation boiling alkali lye of extruding, be 0.03Mpa at the absolute vacuum degree then, wash, ash content 1.0wt% in the washing disposed slurry with 60 ℃ water, iron divides 130mg/kg, blanking sand before carrying out earlier after the washing carries out alkali refining, 98 ℃ of the extraction temperatures of alkali refining after concentrating, refining time 35min, bleach behind the alkali refining, add the bleaching agent liquor natrii hypochloritis, adopt multistage, bleaching time 80min, contain alkali 40mg/L, residual chlorine dose 0.2g/L, bleaching disposed slurry viscosity is 9.8mpa.s, the bleaching back adds the acid of the 0.8wt% of relative over dry stock quality and carries out acid treatment, acid treatment time 25min, acid treatment finishes and is washed to neutrality, and washings reclaim and are used for preliminary treatment washing glycyrrhiza residue, carry out once back blanking sand after the washing again, after concentrating, manufacture paper with pulp then and make the glycyrrhiza residue pulp, the performance indications of gained glycyrrhiza residue pulp: alpha cellulose content 92.5wt%, viscosity is 9.5mpa.s, ash content 0.1wt%, iron divides 21mg/kg, whiteness 82%, little dust 210mm
2/ kg, big 1.0/m of dust
2, reactivity worth 100s.
Claims (9)
1. glycyrrhiza residue pulp is characterized in that: it is that feedstock production forms that described pulp adopts glycyrrhiza residue, the alpha cellulose content 〉=92wt% of described glycyrrhiza residue pulp, viscosity is 9.0～11.0mpa.s, ash content≤0.12wt%, iron branch≤30mg/kg, whiteness 〉=80%, little dust≤220mm
2/ kg, big dust≤1.0/m
2, reactivity worth≤120s.
2. the preparation method of glycyrrhiza residue pulp as claimed in claim 1, it is characterized in that may further comprise the steps: with glycyrrhiza residue successively through preliminary treatment, boiling, washing, desanding, alkali refining, bleaching, acid treatment, wash and the step of manufacturing paper with pulp makes the glycyrrhiza residue pulp, described preliminary treatment is that glycyrrhiza residue is cut to below the length 5cm, washes after the dry type desanding; Described washing is that the black liquor in the boiling disposed slurry is extruded, and is 0.01～0.03Mpa at the absolute vacuum degree then, washs ash content≤1.2wt% in the washing disposed slurry, iron branch≤150mg/kg with 50～60 ℃ water.
3. the preparation method of glycyrrhiza residue pulp as claimed in claim 2, it is characterized in that: add the alkali lye of counting 15～26wt% of relative over dry glycyrrhiza residue with NaOH during described boiling, the green oxygen that adds 0.05～1wt% of relative over dry glycyrrhiza residue, liquor ratio is 1:2.5～5, carry out boiling, cooking pressure 0.30 ± 0.03Mpa, 140～170 ℃ of boiling temperatures, digestion time 60～150min, temperature retention time 120～210min after the boiling, alpha cellulose content 〉=93wt% in the boiling slurry after the boiling, viscosity 11～16mpa.s.
4. the preparation method of glycyrrhiza residue pulp as claimed in claim 3 is characterized in that: the glycyrrhiza residue after will washing earlier before the described boiling is under 1:3.5～6,140～150 ℃ of conditions of temperature in liquor ratio, and insulation 60～120min carries out prehydrolysis under neutrallty condition.
5. the preparation method of glycyrrhiza residue pulp as claimed in claim 2 is characterized in that: 94～99 ℃ of the extraction temperatures of described alkali refining, refining time 30～60min.
6. the preparation method of glycyrrhiza residue pulp as claimed in claim 2, it is characterized in that: described bleaching the time add 3～7wt% of relative over dry slurry the bleaching agent hydrogen peroxide, add the sodium metasilicate of 3～5wt% of relative over dry slurry, the magnesium sulfate that adds 0.2～1wt% of relative over dry slurry, in temperature is 30～50 ℃, bleaching 20～60min, and bleaching disposed slurry viscosity is 9.0～11.0mpa.s.
7. the preparation method of glycyrrhiza residue pulp as claimed in claim 2, it is characterized in that: add bleaching agent chlorine dioxide or liquor natrii hypochloritis during described bleaching, adopt multistage or one section bleaching, bleaching time 30～100min, contain alkali 10～100mg/L, residual chlorine dose 0.1～0.5g/L, bleaching disposed slurry viscosity is 9.0～11.0mpa.s.
8. the preparation method of glycyrrhiza residue pulp as claimed in claim 2 is characterized in that: add the acid amount during described acid treatment and be 0.05～1wt% of relative over dry slurry, acid treatment time 20～40min.
9. as the preparation method of described any glycyrrhiza residue pulp of claim 2 to 8, it is characterized in that: the waste water of described each step reclaims behind the glycyrrhiza residue fiber in the waste water adverse current after filtration and is back to use operation and recycles, and the black liquor of extruding after the described boiling is used to prepare boiling alkali lye.
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| CN 201110109763 CN102154908A (en) | 2011-04-29 | 2011-04-29 | Liquorice residue pulp and preparation method thereof |
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| CN 201110109763 CN102154908A (en) | 2011-04-29 | 2011-04-29 | Liquorice residue pulp and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004820A (en) * | 2017-11-14 | 2018-05-08 | 潍坊友容实业有限公司 | The method that the false indigo transplanted using salt-soda soil prepares pulp |
| CN108824065A (en) * | 2018-06-11 | 2018-11-16 | 河南新野纺织股份有限公司 | A kind of preparation process of the compound high-end fabric of linen-cotton |
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| CN1126262A (en) * | 1994-12-26 | 1996-07-10 | 丁树乔 | Licorice root paper pulp and its products |
| 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 |
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| CN1126262A (en) * | 1994-12-26 | 1996-07-10 | 丁树乔 | Licorice root paper pulp and its products |
| 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004820A (en) * | 2017-11-14 | 2018-05-08 | 潍坊友容实业有限公司 | The method that the false indigo transplanted using salt-soda soil prepares pulp |
| CN108824065A (en) * | 2018-06-11 | 2018-11-16 | 河南新野纺织股份有限公司 | A kind of preparation process of the compound high-end fabric of linen-cotton |
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Application publication date: 20110817 |