CN112342815A - Pulping process of high-ash corrugated base paper - Google Patents
Pulping process of high-ash corrugated base paper Download PDFInfo
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- CN112342815A CN112342815A CN202011056754.0A CN202011056754A CN112342815A CN 112342815 A CN112342815 A CN 112342815A CN 202011056754 A CN202011056754 A CN 202011056754A CN 112342815 A CN112342815 A CN 112342815A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000004537 pulping Methods 0.000 title claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 134
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 41
- 238000004061 bleaching Methods 0.000 claims abstract description 38
- 238000000227 grinding Methods 0.000 claims abstract description 34
- 239000012535 impurity Substances 0.000 claims abstract description 23
- 229920005610 lignin Polymers 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000002781 deodorant agent Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 24
- 239000010902 straw Substances 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 20
- 238000010411 cooking Methods 0.000 claims description 20
- 238000012216 screening Methods 0.000 claims description 16
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 14
- 241000609240 Ambelania acida Species 0.000 claims description 12
- 241000209140 Triticum Species 0.000 claims description 12
- 235000021307 Triticum Nutrition 0.000 claims description 12
- 239000010905 bagasse Substances 0.000 claims description 12
- 239000010893 paper waste Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 241000233866 Fungi Species 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 235000006408 oxalic acid Nutrition 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 7
- 239000007844 bleaching agent Substances 0.000 claims description 7
- 230000001877 deodorizing effect Effects 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 7
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 4
- 230000002087 whitening effect Effects 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 206010061592 cardiac fibrillation Diseases 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000002600 fibrillogenic effect Effects 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 235000010288 sodium nitrite Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C7/00—Digesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
Abstract
A pulping process of high-ash corrugated base paper comprises the following steps: selecting paper-making raw materials required by a corrugated base paper pulping process; cleaning and dedusting all paper making raw materials, tearing the paper making raw materials by using a tearing machine, and crushing the paper making raw materials by using a crushing machine; decomposing a lignin structure in the papermaking raw material; digesting the degraded papermaking raw material by a paper pulp digester to finally form papermaking slurry; removing impurities in the papermaking slurry by a washing and adsorbing method; dehydrating the screened papermaking pulp; adding a bleaching auxiliary agent and a chemical deodorant into the concentrated papermaking pulp to realize bleaching and peculiar smell removal of the papermaking pulp; and (3) carrying out pulp grinding operation on the bleached papermaking pulp by a high-consistency mill to form paper pulp, thus obtaining the paper pulp for preparing the corrugated base paper. The method is simple to operate, the prepared paper pulp has excellent quality, the quality of the corrugated base paper prepared subsequently is improved, the production cost is low, the raw materials are easy to obtain, and the method is suitable for large-scale popularization and use.
Description
Technical Field
The invention relates to the technical field of corrugated base paper production, in particular to a high-ash corrugated base paper pulping process.
Background
With the rapid development of the paper-making packaging industry, the demand of packaging paper is increasing day by day, the market competition is severe, the corrugated base paper is one of the important component materials for producing corrugated boards, and the corrugated base paper requires good fiber bonding strength, flat paper surface, better tightness and stiffness and certain elasticity so as to ensure that the manufactured carton has shockproof and pressure-resistant capabilities; the existing pulping process of the high-ash corrugated base paper is complex, the production cost is high, and the quality of the prepared papermaking pulp is poor, so that the quality of the produced corrugated base paper is poor and needs to be improved.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the pulping process of the high-ash corrugated base paper, which is simple to operate, has excellent quality of the prepared paper pulp, is beneficial to improving the quality of the corrugated base paper prepared subsequently, has low production cost and easily available raw materials, and is suitable for large-scale popularization and use.
(II) technical scheme
The invention provides a pulping process of high-ash corrugated base paper, which comprises the following steps:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
Preferably, in S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70-90 parts of wheat straw: 35-45 parts of straw stalk: 30-40 parts of bagasse: 25-30 parts of waste paper: 20-30 parts.
Preferably, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70 parts of wheat straw: 35 parts of straw stalk: 30 parts of bagasse: 25 parts of waste paper: and 20 parts.
Preferably, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 90 parts of wheat straw: 45 parts of straw stalk: 40 parts of bagasse: 30 parts of waste paper: 30 parts of.
Preferably, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 80 parts of wheat straw: 40 parts of straw stalk: 35 parts of bagasse: 28 parts of waste paper: and 25 parts.
Preferably, in S4, the specific species used include white rot fungi, brown rot fungi and soft rot fungi.
Preferably, in S8, the bleaching assistant comprises the following raw materials in parts by weight:
10-15 parts of alumina, 8-12 parts of hydrogen peroxide, and sodium silicate: 8-10 parts of sodium nitrite, 5-8 parts of papermaking whitening agent: 2-5 parts.
Preferably, before S5, a squeezing operation is further included, specifically as follows:
and conveying the papermaking raw material to a pulp press by a screw conveyor, carrying out pulp press on the papermaking raw material by the pulp press for more than one time, and using waste liquid generated in the pulp press process for cleaning and dedusting operation in S2.
Preferably, in S6, the method further comprises a pulping operation, specifically as follows:
firstly, selecting a grinding sheet with good fibrillation performance for avoiding secondary cutting of fibers, keeping long fibers with enough length, increasing the fluffing quantity of the fiber surface as much as possible, strengthening hydrogen bond combination, improving the strength of the finally prepared base paper, and controlling the beating degree to be 25-28 DEG SR.
The technical scheme of the invention has the following beneficial technical effects:
firstly, selecting papermaking raw materials required by a corrugated medium pulping process, and weighing each papermaking raw material with required mass according to a corrugated medium formula; cleaning and dedusting all the papermaking raw materials, tearing the papermaking raw materials by using a tearing machine, and crushing the papermaking raw materials by using a crushing machine; then, special strains are adopted to directionally decompose the lignin structure in the papermaking raw material; then, the degraded papermaking raw material is steamed and boiled by a paper pulp boiler, and finally papermaking pulp is formed; then removing impurities in the papermaking slurry by a washing and adsorbing method; then screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp; then adding a bleaching auxiliary agent and a chemical deodorant into the concentrated papermaking pulp to finally realize bleaching and peculiar smell removal of the papermaking pulp; then, carrying out pulp grinding operation on the bleached papermaking pulp by a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to carry out whitening on the pulp, thereby finally obtaining the paper pulp for preparing the corrugated medium;
the method is simple to operate, the prepared paper pulp has excellent quality, the quality of the corrugated base paper prepared subsequently is improved, the production cost is low, the raw materials are easy to obtain, and the method is suitable for large-scale popularization and use.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example one
The invention provides a pulping process of high-ash corrugated base paper, which comprises the following steps:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
In S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70-90 parts of wheat straw: 35-45 parts of straw stalk: 30-40 parts of bagasse: 25-30 parts of waste paper: 20-30 parts.
Example two
The invention provides a pulping process of high-ash corrugated base paper, which comprises the following steps:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
In S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70 parts of wheat straw: 35 parts of straw stalk: 30 parts of bagasse: 25 parts of waste paper: and 20 parts.
EXAMPLE III
The invention provides a pulping process of high-ash corrugated base paper, which comprises the following steps:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
In S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 90 parts of wheat straw: 45 parts of straw stalk: 40 parts of bagasse: 30 parts of waste paper: 30 parts of.
Example four
The invention provides a pulping process of high-ash corrugated base paper, which comprises the following steps:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
In S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 80 parts of wheat straw: 40 parts of straw stalk: 35 parts of bagasse: 28 parts of waste paper: and 25 parts.
In an alternative embodiment, in S4, the special strains include white rot fungi, brown rot fungi and soft rot fungi, which have good lignin decomposition effect and high decomposition efficiency.
In an alternative embodiment, in S8, the bleaching assistant comprises the following raw materials in parts by weight: 10-15 parts of alumina, 8-12 parts of hydrogen peroxide, and sodium silicate: 8-10 parts of sodium nitrite, 5-8 parts of papermaking whitening agent: 2-5 parts. The bleaching auxiliary has better bleaching performance, can achieve better bleaching effect, and is beneficial to improving the quality of the prepared corrugated base paper.
In an alternative embodiment, before S5, a squeezing operation is further included, specifically as follows: the papermaking raw materials are conveyed to the pulp extruder through the screw conveyor, pulp extruding is carried out on the papermaking raw materials by the pulp extruder for more than one time, the subsequent pulping operation is facilitated, the quality of subsequently prepared paper pulp is obviously improved, waste liquid generated in the pulp extruding process is used for cleaning and dedusting operation in S2, secondary utilization of aqueous solution is realized, and water resources are saved.
In an alternative embodiment, in S6, a beating operation is further included, specifically as follows: the method comprises the steps of selecting a grinding sheet with good fibrillation performance for avoiding secondary cutting of fibers, keeping long fibers to have enough length, increasing the fluffing quantity of the fiber surface as much as possible, strengthening hydrogen bond combination, improving the strength of the finally prepared base paper, controlling the beating degree to be 25-28 degrees SR, and contributing to improving the paper pulp quality.
In the invention, firstly, the papermaking raw materials required by the corrugated medium pulping process are selected, and the papermaking raw materials with required mass are weighed according to the formula of the corrugated medium; cleaning and dedusting the papermaking raw materials to remove dust impurities carried on the papermaking raw materials, tearing the papermaking raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn papermaking raw materials after tearing operation is finished; then conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so as to crush the papermaking raw materials into particles with the diameter of 20-35 mm; then, by a biological pulping method and by adopting special strains to specially and directionally decompose the lignin structure in the papermaking raw material, finally, the lignin in the papermaking raw material is degraded; then, the degraded papermaking raw material is cooked through a paper pulp boiler, and a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate are added into the paper pulp boiler, wherein the cooking temperature is adjusted to 80-100 ℃, the cooking time is 6-8 hours, and finally papermaking slurry is formed; then removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the boiled papermaking pulp by water, and adding an adsorbent in the washing process to adsorb and discharge the impurities in the paper pulp; then, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize the concentration of the papermaking pulp; then adding a bleaching auxiliary agent and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized; finally, carrying out pulp grinding operation on the bleached papermaking pulp through a high-concentration mill to form paper pulp, adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes, and finally obtaining the paper pulp for preparing the corrugated base paper;
the method is simple to operate, the prepared paper pulp has excellent quality, the quality of the corrugated base paper prepared subsequently is improved, the production cost is low, the raw materials are easy to obtain, and the method is suitable for large-scale popularization and use.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. The pulping process of the high-ash corrugated base paper is characterized by comprising the following steps of:
s1, selecting paper making raw materials required by the corrugated base paper pulping process, and weighing the paper making raw materials with required mass according to the formula of the corrugated base paper;
s2, cleaning and dedusting the paper making raw materials to remove dust impurities carried on the paper making raw materials, tearing the paper making raw materials by using a tearing machine, and adding a certain amount of aqueous solution to wet the torn paper making raw materials after tearing operation;
s3, conveying the torn raw materials into a crusher by using a belt conveyor, and crushing the papermaking raw materials by using the crusher so that the papermaking raw materials are crushed into particles with the diameter of 20-35 mm;
s4, decomposing the lignin structure in the papermaking raw material in a special orientation manner by a biological pulping method and adopting special strains, and finally realizing the degradation of the lignin in the papermaking raw material;
s5, cooking the degraded papermaking raw material through a paper pulp cooker, adding a sodium hydroxide solution, hydrogen peroxide and magnesium sulfate into the paper pulp cooker, adjusting the cooking temperature to 80-100 ℃, and cooking for 6-8 hours to finally form papermaking slurry;
s6, removing impurities in the papermaking pulp by a washing and adsorbing method, namely replacing waste liquid in the cooked papermaking pulp by water, and adding an adsorbent to adsorb and discharge the impurities in the paper pulp in the washing process;
s7, screening the papermaking pulp by using a screening net, and dehydrating the screened papermaking pulp to realize concentration of the papermaking pulp;
s8, adding a bleaching auxiliary and a chemical deodorant into the concentrated papermaking pulp, uniformly stirring to fully bleach the pulp, wherein the bleaching time is 1-1.5 h, the bleaching temperature is 60-70 ℃, and finally bleaching and deodorizing the papermaking pulp are realized;
s9, carrying out pulp grinding operation on the bleached papermaking pulp through a high-consistency mill to form paper pulp, and adding oxalic acid into the pulp subjected to the pulp grinding operation to whiten the pulp, wherein the pulp grinding temperature is 70-80 ℃, and the pulp grinding time is 40-60 minutes.
2. The pulping process of the high ash corrugated medium paper as claimed in claim 1, wherein in S1, the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70-90 parts of wheat straw: 35-45 parts of straw stalk: 30-40 parts of bagasse: 25-30 parts of waste paper: 20-30 parts.
3. The pulping process of the high ash corrugated medium paper as claimed in claim 2, wherein the papermaking raw material comprises the following raw materials in parts by weight:
bark: 70 parts of wheat straw: 35 parts of straw stalk: 30 parts of bagasse: 25 parts of waste paper: and 20 parts.
4. The pulping process of the high ash corrugated medium paper as claimed in claim 2, wherein the papermaking raw material comprises the following raw materials in parts by weight:
bark: 90 parts of wheat straw: 45 parts of straw stalk: 40 parts of bagasse: 30 parts of waste paper: 30 parts of.
5. The pulping process of the high ash corrugated medium paper as claimed in claim 2, wherein the papermaking raw material comprises the following raw materials in parts by weight:
bark: 80 parts of wheat straw: 40 parts of straw stalk: 35 parts of bagasse: 28 parts of waste paper: and 25 parts.
6. The pulping process of high ash corrugated medium paper according to claim 1, wherein the specific strains adopted in S4 include white rot fungi, brown rot fungi and soft rot fungi.
7. The high ash corrugated medium pulping process according to claim 1, wherein in S8, the bleaching assistant comprises the following raw materials in parts by weight:
10-15 parts of alumina, 8-12 parts of hydrogen peroxide, and sodium silicate: 8-10 parts of sodium nitrite, 5-8 parts of papermaking whitening agent: 2-5 parts.
8. The high ash corrugating medium pulping process of claim 1, further comprising a pulp squeezing operation before S5, specifically as follows:
and conveying the papermaking raw material to a pulp press by a screw conveyor, carrying out pulp press on the papermaking raw material by the pulp press for more than one time, and using waste liquid generated in the pulp press process for cleaning and dedusting operation in S2.
9. The pulping process of the high ash corrugated medium paper as claimed in claim 1, wherein in S6, the pulping process further comprises the following steps:
firstly, selecting a grinding sheet with good fibrillation performance for avoiding secondary cutting of fibers, keeping long fibers with enough length, increasing the fluffing quantity of the fiber surface as much as possible, strengthening hydrogen bond combination, improving the strength of the finally prepared base paper, and controlling the beating degree to be 25-28 DEG SR.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200862A (en) * | 2007-05-30 | 2008-06-18 | 山东华林环保科技有限公司 | Clean pulping process |
| CN101220569A (en) * | 2008-01-29 | 2008-07-16 | 刘长如 | Pulping bleaching assistant and cold soaking pulping process |
| CN101718049A (en) * | 2009-10-30 | 2010-06-02 | 邹平县海华纸业有限公司 | Clean pulping process for straws by mechanical method |
| CN106283824A (en) * | 2016-07-15 | 2017-01-04 | 东莞顺裕纸业有限公司 | A kind of high weight high-strength fluting medium process for cleanly preparing |
| CN106758446A (en) * | 2016-11-17 | 2017-05-31 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN108049229A (en) * | 2017-12-08 | 2018-05-18 | 齐鲁工业大学 | A kind of environment-protecting clean pulping process |
| CN109267417A (en) * | 2018-09-04 | 2019-01-25 | 江苏星光新材料科技有限公司 | A kind of fireproof environmental fluting medium |
-
2020
- 2020-09-29 CN CN202011056754.0A patent/CN112342815A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200862A (en) * | 2007-05-30 | 2008-06-18 | 山东华林环保科技有限公司 | Clean pulping process |
| CN101220569A (en) * | 2008-01-29 | 2008-07-16 | 刘长如 | Pulping bleaching assistant and cold soaking pulping process |
| CN101718049A (en) * | 2009-10-30 | 2010-06-02 | 邹平县海华纸业有限公司 | Clean pulping process for straws by mechanical method |
| CN106283824A (en) * | 2016-07-15 | 2017-01-04 | 东莞顺裕纸业有限公司 | A kind of high weight high-strength fluting medium process for cleanly preparing |
| CN106758446A (en) * | 2016-11-17 | 2017-05-31 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN108049229A (en) * | 2017-12-08 | 2018-05-18 | 齐鲁工业大学 | A kind of environment-protecting clean pulping process |
| CN109267417A (en) * | 2018-09-04 | 2019-01-25 | 江苏星光新材料科技有限公司 | A kind of fireproof environmental fluting medium |
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