CN106400562B - A kind of pulping process of biology ultrasonic wave high-strength mechanical slurry - Google Patents
A kind of pulping process of biology ultrasonic wave high-strength mechanical slurry Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 title claims abstract description 30
- 238000004537 pulping Methods 0.000 title claims abstract description 29
- 239000002002 slurry Substances 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 239000002994 raw material Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 241000894006 Bacteria Species 0.000 claims abstract description 30
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 30
- 239000002131 composite material Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000002023 wood Substances 0.000 claims abstract description 12
- 241000233866 Fungi Species 0.000 claims abstract description 10
- 241000589540 Pseudomonas fluorescens Species 0.000 claims abstract description 9
- 241000571310 Pararheinheimera tangshanensis Species 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 39
- 239000000835 fiber Substances 0.000 claims description 32
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 229920005610 lignin Polymers 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 10
- 230000001954 sterilising effect Effects 0.000 claims description 9
- 238000004659 sterilization and disinfection Methods 0.000 claims description 9
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000006065 biodegradation reaction Methods 0.000 claims description 4
- 230000001580 bacterial effect Effects 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000004061 bleaching Methods 0.000 description 8
- 108090000790 Enzymes Proteins 0.000 description 7
- 102000004190 Enzymes Human genes 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- 108010029541 Laccase Proteins 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000002525 ultrasonication Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 108010054320 Lignin peroxidase Proteins 0.000 description 1
- 108010059896 Manganese peroxidase Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003325 follicular Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009395 genetic defect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 108010062085 ligninase Proteins 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000005839 oxidative dehydrogenation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 peroxide Compound Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/303—Defibrating by other means using vibrating devices
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
Abstract
The present invention relates to the pulping process of biological ultrasonic wave high-strength mechanical slurry, can effectively solve the problem of that the pulp quality for improving chemi-mechanical pulp reduces production cost and improves production efficiency.Method is that it is 6 × 10 to add water that population density is made whiterot fungi, Rheinheimera tangshanensis, Acinebobacter lwoffi and Pseudomonas fluorescens7The composite bacteria liquid of a/more than ml；Woody raw material is cut into the wood chip that length is 3~4cm, or by the cutting of herbaceous plant raw material grow up 4~5cm, washing, steam steams, dehydration, submergence carries out one section of squeezing extrusion in one section of squeezing extrusion liquid, it is subsequently placed in composite bacteria liquid biodegradable, it pulls out, draining, atmospheric steam is sterilized, two sections of squeezing extrusions again, ultrasonic reaction, washing, screening, filtering, extruding is condensed into wet pulp, the method of the present invention novel and unique, science, it is easy to operate, effect is good, the pulp quality of chemi-mechanical pulp can be effectively improved, reduce the raising production efficiency of production cost, energy conservation and environmental protection.
Description
Technical field
The present invention relates to paper-making pulping, particularly a kind of pulping process of biological ultrasonic wave high-strength mechanical slurry.
Background technology
In paper production, paper pulp is essential, and currently used alkaline hydrogen peroxide mechanical pulp is with leaf wood
For main pulping raw material, manufactured a kind of chemi-mechanical pulp using squeezing extrusion, dipping and refining process.Its pulping process is
Grow up on the basis of bleached chemical thermomechanical pulp pulping process, it summarizes chemical thermomechanical pulp and bleachingization
The advantages of learning on the pulping process and production equipment of thermomechanical pulp, and found that " conjunction two that slurrying and bleaching are completed simultaneously is
One " pulping process, this pulp preparing process become the maximum feature of alkaline hydrogen peroxide mechanical pulping process.It, which has, sets
Standby to invest that less, floor space is small, technological process is compact, energy consumption is relatively low, paper pulp yield is high, pulp-making waste-water not sulfur-bearing, no
Containing chlorine, pollute light, improvement easily, paper pulp, which can be used for matching, copies medium-to-high grade newsprint, a variety of coating papers containing mechanical pulp and uncoated print
The various paper such as brush paper.The characteristics of based on alkaline hydrogen peroxide mechanical pulp pulping process and plurality of advantages, alkaline hydrogen peroxide machine
Tool slurry pulping process is known as the pulping process of " the most development potentiality nineties ", is the advanced environmentally protective work in the world today
Skill.
At present, the pulp-making method of the existing main production alkaline hydrogen peroxide mechanical pulp in China is PRC APMP, work therein
Skill flow is mainly squeezed by chip washing, decatize, 1 section of single-screw press screw, 1 section of infuser, 1 section of reaction warehouse, 2 sections of single-screws
Pressure fluffer, 2 sections of infusers, 2 sections of reaction warehouses, one section of high-density paste mill, high density hypo tower, rush dilute pond, two sections of high-density paste mills,
Eliminating potential pool, screening purification, thickener and machine chest process composition.Pulping bleaching liquid chemicals composition includes NaOH and H2O2。
The tear of wood chip, dipping are completed in single-screw press screw and infuser respectively.Single-screw press screw by adjusting
Compression compares wood chip and carries out squeezing tear processing in its machine, and wood chip is made to be shredded into fine debris along its grain direction, is soaking it
Pulping bleaching liquid is fully sucked in stain device.The slurry that tear and dipping effect due to wood chip will be directly affected in reaction warehouse
Chemical reaction degree and subsequent defibrination quality, therefore, single-screw press screw is the key equipment in pulping process flow.
However, institute is not achieved because of the single-screw press screw processing of selection in existing alkaline hydrogen peroxide mechanical pulp pulping process flow
It is required that effect the defects of, while infuser is because often bringing pulping bleaching liquid into reaction warehouse, and thus existing causes to react
In storehouse slurry concentration it is unstable and the shortcomings that influence follow-up defibrination section quality.
A kind of existing double helix exrusion method alkaline hydrogen peroxide mechanical pulp（APMP）Pulping process, technological process are by wood
Piece washing, decatize, hot water or alkaline Pretreatment, No. 1 twin screw extruder, No. 1 reaction warehouse, No. 2 double helix exrusions are discongested
The processes compositions such as machine, No. 2 reaction warehouses, one section of highly concentrated mill, two sections of highly concentrated mills, screening purification, thickener and machine chest.In flow
Hot water or alkaline Pretreatment are conducive to the softening of air-dried wood chip, select two twin screw extruders by squeezing in existing procedure
Pressure is discongested to be combined into one with impregnation technology, and pulping bleaching liquid is injected separately into two twin screw extruders, fibre material
It obtains adequately squeezing in the machine and grinds tear and good dipping mixed effect, slurry quality is starched with traditional PRC APMP
Quality it is suitable, and the technological process is more complicated, and the pulp quality produced is not very high, and not only production cost is high, but also raw
It is low to produce efficiency, therefore improvement on machinery pulping and innovation are imperative.
Invention content
For the above situation, to overcome the defect of the prior art, the purpose of the present invention is just to provide a kind of biological ultrasonic wave
The pulping process of high-strength mechanical slurry can be solved effectively to improve the pulp quality of chemi-mechanical pulp, reduce production cost and raising
The problem of production efficiency.
The technical solution that the present invention solves is that this method includes the following steps：
（1）, prepare composite bacteria liquid：
By whiterot fungi, Rheinheimera tangshanensis, Acinebobacter lwoffi and Pseudomonas fluorescens using mass ratio as 2~3 ︰ 1~
3 ︰, 1~2 ︰ 1~2 are combined with each other, and add water, and it is 6 × 10 that population density, which is made,7The composite bacteria liquid of a/more than ml；
（2）, steam raw material：The raw material is fibrous woody or herbaceous plant, and first woody raw material cutting is grown up
Spend for 3~4cm wood chip or by the cutting of herbaceous plant raw material grow up 4~5cm, be washed with water after washing 2~3 times, carried out with steam
10~30min is steamed, softens raw material, is then dehydrated；
（3）, one section of squeezing extrusion：One section of extruding of progress is submerged in one section of squeezing extrusion liquid to softening dewatered raw material
It discongests, raw material is made to become filiform, one section of squeezing extrusion liquid is quality percentage meter：NaOH 1.0~2.0% and H2O20.01~
0.1%, which adds water to 100%, is made；
（4）, it is biodegradable；
Raw material after one section is discongested is placed in composite bacteria liquid, and composite bacterial group is allowed to start to drop the lignin of raw material
Solution, one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 6~8, biodegradable temperature is maintained at 35~40 DEG C, the time
It is 30~42 hours；
（5）, wet sterilization；
Raw material after above-mentioned biodegradation from composite bacteria liquid is pulled out, draining, carry out water at atmospheric pressure wet sterilization 10~30
Minute；
（6）, two sections of squeezing extrusions：Raw material after wet sterilization is subjected to squeezing extrusion in two sections of squeezing extrusion liquid, into
Fibre bundle；Two sections of squeezing extrusion liquid are mass percent meter：NaOH 2.0~4.0%, H2O22.0~6.0%,
Na2SiO31.5~4.0% and DTPA 0.1~0.5% adds water to 100% and is made；
（7）, be ultrasonically treated, fibre bundle is made to become single fiber：Fibre bundle is placed in ultrasonic response storehouse, ultrasonic reaction
30~60min, reaction power are 100~300kw, and response frequency is 15~30kHz；
（8）, screening purification, extruding be condensed into wet pulp：After ultrasonic response has been handled, paper pulp be discharged into wash engine into
Row washing, is screened after washing, is filtered, ultrasonic reaction makes it into single fiber, concentrated machine to the fibre bundle in paper pulp again
Extruding is condensed into wet pulp, for papermaking.
The method of the present invention novel and unique, science is easy to operate, and effect is good, can effectively improve the pulp quality of chemi-mechanical pulp,
The raising production efficiency of production cost is reduced, energy conservation and environmental protection has significant economic and social benefit.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
It elaborates below in conjunction with drawings and examples to the specific embodiment of the present invention.
Embodiment 1
As shown in Figure 1, the present invention in specific implementation, includes the following steps：
（1）, prepare composite bacteria liquid：
By whiterot fungi, Rheinheimera tangshanensis, Acinebobacter lwoffi and Pseudomonas fluorescens using mass ratio as 2~3 ︰ 1~
3 ︰, 1~2 ︰ 1~2 are combined with each other, and add water, and it is 6 × 10 that population density, which is made,7The composite bacteria liquid of a/more than ml；
（2）, steam raw material：The raw material is fibrous woody or herbaceous plant, and first woody raw material cutting is grown up
Spend for 3~4cm wood chip or by the cutting of herbaceous plant raw material grow up 4~5cm, be washed with water after washing 2~3 times, be sent into decatize
Storehouse is carried out steaming 10~30min with steam, softens raw material, be dehydrated subsequently into inclined helix dehydrator；
（3）, one section of squeezing extrusion：One section of twin screw extruder is sent into softening dewatered raw material, adds in one section
Squeezing extrusion liquid submerges, and carries out one section of squeezing extrusion, and raw material is made to become filiform, and one section of squeezing extrusion liquid is quality percentage meter：
NaOH 1.0~2.0% and H2O20.01~0.1%, which adds water to 100%, is made；
（4）, it is biodegradable；
Raw material after one section is discongested is sent into composite bacteria liquid storehouse, is placed in composite bacteria liquid, composite bacterial group is allowed to start to original
The lignin of material is degraded, one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 6~8, biodegradable temperature is protected
It holds at 35~40 DEG C, the time is 30~42 hours；
（5）, wet sterilization；
Raw material after above-mentioned biodegradation from composite bacteria liquid is pulled out, draining, by transporting storage silo, stored in transport
By water vapour in storehouse, water at atmospheric pressure wet sterilization is carried out 10~30 minutes；
（6）, two sections of squeezing extrusions：The raw material after wet sterilization is sent into two sections of double helix exrusions through horizontal conveyor belt to discongest
Machine adds in two sections of squeezing extrusion liquid submergences, discongests into fibre bundle；Two sections of squeezing extrusion liquid are mass percent meter：
NaOH 2.0~4.0%, H2O22.0~6.0%, Na2SiO31.5~4.0% and DTPA 0.1~0.5% adds water to 100% and is made；
（7）、（7）, be ultrasonically treated, fibre bundle is made to become single fiber：Fibre bundle is sent into ultrasonic response storehouse and is carried out
Ultrasonication, 30~60min of ultrasonic reaction, reaction power are 100~300kw, and response frequency is 15~30kHz；
（8）, screening purification, extruding be condensed into wet pulp：After ultrasonic response has been handled, paper pulp be discharged into wash engine into
Row washing, is screened after washing, is filtered, ultrasonic reaction makes it into single fiber, concentrated machine to the fibre bundle in paper pulp again
Extruding is condensed into wet pulp, for papermaking.
Embodiment 2
In specific implementation, the composite bacteria liquid is the present invention, and whiterot fungi, Rheinheimera tangshanensis, Lu Shi is motionless
Bacillus and Pseudomonas fluorescens are combined with each other by 2.2~2.8 ︰, 1.5~2.5 ︰, 1.2~1.8 ︰ 1.2~1.5 of mass ratio, add
Water, it is 6 × 10 that population density, which is made,7The composite bacteria liquid of a/more than ml；
One section of squeezing extrusion liquid is quality percentage meter：NaOH 1.2~1.8% and H2O20.02~0.08% adds
Water is made to 100%；
Described one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 7, biodegradable temperature is maintained at 36~
38 DEG C, the time is 35~40 hours；
Two sections of squeezing extrusion liquid are mass percent meter：NaOH 2.5~3.5%, H2O23.0~5.0%,
Na2SiO32~3.0% and DTPA 0.2~0.4% adds water to 100% and is made.
Embodiment 3
In specific implementation, the composite bacteria liquid is the present invention, and whiterot fungi, Rheinheimera tangshanensis, Lu Shi is motionless
Bacillus and Pseudomonas fluorescens are combined with each other by 2.5 ︰, 2 ︰, 1.5 ︰ 1.5 of mass ratio, add water, and it is 6 × 10 that population density, which is made,7
The composite bacteria liquid of a/more than ml；
One section of squeezing extrusion liquid is quality percentage meter：NaOH 1.5% and H2O20.06% adds water to 100% system
Into；
Described one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 7, biodegradable temperature is maintained at 37 DEG C,
Time is 36~38 hours；
Two sections of squeezing extrusion liquid are mass percent meter：NaOH 3%、H2O2 4%、Na2SiO32.5% He
DTPA 0.3% adds water to 100% and is made.
The method of the present invention uses bio-pulping, reduces environmental pollution from slurrying source, saves energy consumption.Traditionally slurrying includes
Two aspect of biochemical Pulping and bio-mechanical slurrying, bio-mechanical slurrying refer to be replaced with microorganism or enzyme before mechanical jordaning
Chemicals pre-processes raw material, other than reducing contaminated wastewater, can also reduce refining energy consumption, improves equipment production energy
Power, and pitch prob-lems can be reduced, significantly improve the strength character of paper pulp.It therefore, can be before slurrying using screening and examination
The microorganism pretreated feedstock tested, makes it degrade and be modified raw material wood element.The main influence of pretreated feedstock
Factor is species, enzyme dosage, pH value, temperature, concentration and raw material material kind etc..Under general chemical reaction condition, organic matter
Cracking generates free radicals macromolecular at high temperature, and under the catalytic action of enzyme, it is only necessary to it can make in room temperature and neutrallty condition
Free radical needed for the further cracking of lignin macromolecule structural unit oxidative dehydrogenation generation or polymerisation, obtains radical reaction
To be smoothed out.By slurry obtained after Biological Pretreatment compared with control sample slurry, under identical paper pulp kappa number,
The dosage of chemicals can be saved or reduce digestion time；Or under identical Pulping conditions, the Kappa number of paper pulp can be reduced, is saved
The about chemicals dosage of next step bleaching process；Meanwhile the physical property for the paper that can make to manufacture paper with pulp is improved.Lignin exists
The mechanism of fungi or bacterium is the process of Biodegradation of Lignin, is carried out under the conditions of room temperature, normal pressure and weakly acidic pH value
, the final product of degradation is carbon dioxide and water.The strains such as whiterot fungi can generally generate three classes ligninase, i.e. lignin peroxide
Compound enzyme, divalent manganese peroxidase and laccase, these enzymes can carry out catalytic degradation to lignin.Have been reported that determining laccase
（Laccase）And lignin peroxidase（Lip）Individualism all cannot xylogen degradation well, and two kinds of enzymes exist simultaneously
When, lignin can but be degraded well, show that two kinds of enzymes have synergistic effect.There are three features for Degradation by White-rot Fungus lignin：（1）
Thoroughly CO can be generated by xylogen degradation2And water, and bacterium is CO at most by 20% lignin carbon conversion2；（2）Lignin degradation is mainly oxygen
Change reaction, do not occur lignin monomer in product；（3）Lignin degradation does not provide the carbon source and the energy needed for thalli growth in itself, needs
In addition it to provide.
It is mainly " cavitation effect " and " free radical activation " by ultrasonic wave using ultrasonication paper pulp fiber.
The steam not only generated in itself containing liquid in the bubble formed during ultrasonic cavitation, but also contain the gas for being dissolved in liquid
Body.There are two types of act on to cellulose for acoustic cavitation：First, the high-speed liquid stream that the high-strength microjet that cavitation follicular rupture generates is formed is hit
Fiber finer cell wall is hit, makes fiber surface by mechanical impact and ultra small scale manufacture power, fiber surface is made to become fluffing, coarse, is exposed
More hydrophilic radicals occur fibrillating and play the role of slightly being beaten；Another is the high pressure that cavitation bubble collapse generates
Or high pressure discharges the shock wave generated or the shear stress on pulsating cavity interface or the alternating pressure variation of mechanical movement generation
When acting on fiber surface, must be generated at the genetic defects of fiber stress, strain concentrate, make fiber finer cell wall primary wall and
Outer layer of secondary wall is cracked, cell wall deforms with displacement and removing, there are more central layer of secondary to be exposed, fiber
Surface thus becomes coarse, increases interfibrous frictional resistance.As a result, lead to the morphosis of cellulose, supramolecular structured
Structure, the degree of polymerization and its distribution change.Continue to increase the ul-trasonic irradiation time, the subcritical expansion of fatigue crack occurs for fiber
Exhibition leads to crystallite dislocation, and specific surface area increases, and crystallinity declines, and amorphous region increase causes few fibers to be broken, so as to fine
Average length is tieed up to decline.Simultaneously under ul-trasonic irradiation, bleaching liquor greatly reinforces the run-inflation effect of cellulose, shortens medicinal liquid osmosis
Time can disconnect the hydrogen bond of cellulosic molecule interchain, open microcellular structure, greatly increase the internal surface area of cellulose, improve it
To the accessibility and chemical reactivity of bleaching liquor.Ultrasonication has the water retention value for improving cellulose remarkable result, fiber profit
Swollen degree enlarged relative, fiber becomes quite soft plastic after swollen, external surface area increase, internal organizational structure relaxation, molecule
Between cohesive force decline, be conducive to the progress of fibrillating.And the fiber for not removing primary wall seems smooth, stiff, not hygroscopic
Swollen.
After measured, product quality is very good for product prepared by the present invention, and paper pulp tensile index is when beating degree is 45 ° of SR
36.3~71.0 N·m/g；Tear index is 2.98 ~ 7.25 mNm2/g；Whiteness is 82 ~ 85%ISO；Burst index is 1.89
~3.36kPa m2/g.After Biological Pretreatment, equipment capacity 10 ~ 20% can be improved.
Compared with prior art, the present invention is due to using Biological Pretreatment, making it further soften raw material, thus significantly
Improve the extruding tearing effects of postorder section and final pulp quality；Due to two ultrasonic response storehouses instead of traditional 2
Reaction warehouse and eliminate high density hypo tower and high concentration plate mill and ul-trasonic irradiation processing paper pulp.Therefore, the pulping technique is not
Technological process is only simplified, reduces investment outlay more than 40%；And pulp quality and the production capacity 10-20% of equipment are improved, it drops
Low production cost 50% or so, has been truly realized energy conservation and environmental protection, is the big innovation in paper pulp slurrying, have it is significant economical and
Social benefit.
Claims (2)
1. a kind of pulping process of biology ultrasonic wave high-strength mechanical slurry, which is characterized in that include the following steps：
（1）, prepare composite bacteria liquid：
By whiterot fungi, Rheinheimera tangshanensis, Acinebobacter lwoffi and Pseudomonas fluorescens using mass ratio as 2.2~2.8 ︰ 1.5
1.2~1.8 ︰ 1.2~1.5 of~2.5 ︰ are combined with each other, and add water, and it is 6 × 10 that population density, which is made,7The compound bacteria of a/more than mL
Liquid；
（2）, steam raw material：The raw material is fibrous woody or herbaceous plant, and it is 3 that woody raw material first is cut into length
The wood chip of~4cm grows up the cutting of herbaceous plant raw material 4~5cm, is washed with water after washing 2~3 times, decatize storehouse is sent into, with steaming
Vapour carries out steaming 10~30min, softens raw material, is dehydrated subsequently into inclined helix dehydrator；
（3）, one section of squeezing extrusion：One section of twin screw extruder is sent into softening dewatered raw material, adds in one section of extruding
Liquid submergence is discongested, carries out one section of squeezing extrusion, raw material is made to become filiform, one section of squeezing extrusion liquid is quality percentage meter：NaOH
1.2~1.8% and H2O20.02~0.08%, which adds water to 100%, is made；
（4）, it is biodegradable；
Raw material after one section is discongested is sent into composite bacteria liquid storehouse, is placed in composite bacteria liquid, composite bacterial group is allowed to start to raw material
Lignin is degraded, one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 7, biodegradable temperature is maintained at 36~
38 DEG C, the time is 35~40 hours；
（5）, wet sterilization；
Raw material after above-mentioned biodegradation from composite bacteria liquid is pulled out, draining, by transporting storage silo, transported in storage silo
By water vapour, water at atmospheric pressure wet sterilization is carried out 10~30 minutes；
（6）, two sections of squeezing extrusions：Raw material after wet sterilization is sent into two sections of twin screw extruders through horizontal conveyor belt,
Two sections of squeezing extrusion liquid submergences are added in, discongest into fibre bundle；Two sections of squeezing extrusion liquid are mass percent meter：NaOH
2.5~3.5%, H2O23.0~5.0%, Na2SiO32~3.0% and DTPA 0.2~0.4% adds water to 100% and is made；
（7）, be ultrasonically treated, fibre bundle is made to become single fiber：Fibre bundle is sent into ultrasonic response storehouse and is carried out at ultrasonic wave
Reason, 30~60min of ultrasonic reaction, reaction power are 100~300kw, and response frequency is 15~30kHz；
（8）, screening purification, extruding be condensed into wet pulp：After ultrasonic response has been handled, paper pulp is discharged into wash engine and is washed
It washs, is screened, filtered after washing, ultrasonic reaction makes it into single fiber, concentrated machine extruding to the fibre bundle in paper pulp again
Wet pulp is condensed into, for papermaking.
2. the pulping process of biology ultrasonic wave high-strength mechanical slurry according to claim 1, which is characterized in that described answers
Closing bacterium solution is, by whiterot fungi, Rheinheimera tangshanensis, Acinebobacter lwoffi and Pseudomonas fluorescens using mass ratio as 2.5 ︰, 2 ︰
1.5 ︰ 1.5 are combined with each other, and add water, and it is 6 × 10 that population density, which is made,7The composite bacteria liquid of a/more than mL；
One section of squeezing extrusion liquid is quality percentage meter：NaOH 1.5% and H2O20.06%, which adds water to 100%, is made；
Described one section discongest after raw material and composite bacteria liquid mass ratio for 1 ︰ 7, biodegradable temperature is maintained at 37 DEG C, the time
It is 36~38 hours；
Two sections of squeezing extrusion liquid are mass percent meter：NaOH 3%、H2O2 4%、Na2SiO32.5% and DTPA
0.3%, which adds water to 100%, is made.
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| CN108301246B (en) * | 2017-12-31 | 2019-02-26 | 东莞市泰昌纸业有限公司 | Long fibre is reduced during using the defibrination of regenerated papermaking to fracture the method for rate |
| CN108221434A (en) * | 2018-01-03 | 2018-06-29 | 李树泉 | Utilize the method for straws in biomass power plant and weedtree raw material coproduction lignocellulosic |
| CN110744668B (en) * | 2019-10-30 | 2021-09-28 | 凉山德农生物能源股份有限公司 | Preparation method of jatropha curcas base nano paper pulp |
| CN112647332A (en) * | 2020-12-16 | 2021-04-13 | 江西中竹生物质科技有限公司 | Utilize ultrasonic waste paper slurrying system |
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