CN106676924A - Method of preparing coarse paper pulp by using plant straws - Google Patents
Method of preparing coarse paper pulp by using plant straws Download PDFInfo
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- CN106676924A CN106676924A CN201710007457.9A CN201710007457A CN106676924A CN 106676924 A CN106676924 A CN 106676924A CN 201710007457 A CN201710007457 A CN 201710007457A CN 106676924 A CN106676924 A CN 106676924A
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- pressure
- medicament
- drift
- coarse particles
- rubbed
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-
- 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
-
- 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
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw 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
- D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices
-
- 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
- D21B1/36—Explosive disintegration by sudden pressure reduction
-
- 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
- D21C9/1068—Bleaching ; Apparatus therefor with O2
Abstract
The invention belongs to the field of papermaking, and relates to a method of preparing coarse paper pulp by using plant straws and a method of preparing finished product paper pulp by virtue of the method. The method comprises the following steps: (1) cutting: cutting plant straws into 10-20mm small sections, and removing mud and sand and sundries; (2) screening: screening 10-20mm materials and removing dust; (3) washing and impregnating: washing with water to remove ash foreign matters, and performing dehydration after water absorption to swell; (4) mechanical rubbing: mechanically rubbing the materials to dissociate and broom fiber bundles; (5) detonation treatment: putting the materials in a closed pressure container, introducing high-pressure steam, keeping an air pressure of 1.0-2.5MPa for 4-15 minutes, releasing the materials and steam within 60-75ms to constant pressure, and detonating the materials; and (6) devillicating and rubbing: feeding the materials into a splitting machine to be extruded, ground, torn and rubbed to obtain the coarse pulp. The method provided by the invention for preparing finished product paper pulp is efficient in bleaching, low in cost, high in yield and free of black liquid, and is suitable for annual forage straws and perennial plant waste branches.
Description
Technical field
The invention belongs to pulp technology for making paper, specifically a kind of method and profit with straw preparation papermaking coarse particles
The method for preparing finished product paper pulp with the method, is particularly suited for annual straw or like vegetable raw material and agricultural crop straw class plant material
Paper-making pulping.
Background technology
Crop waste straw as a kind of plant biomass resource being widely present, with great biological utilisation valency
Value.China produces every year a large amount of crop waste straws as large agricultural country, but very low to the utilization ratio of straw, big portion
Divide straw directly to be burned, cause serious environmental pollution and the wasting of resources.Crop waste straw main component is wooden fibre
Dimension element, its component includes lignin, cellulose and hemicellulose, also containing pectin etc. in plant material.
For xylophyta, fiber fines are more, silicon contains for careless class, the agricultural crop straw class of annual non-woody fibers
Non-fiber component complicated, the self color depth more such as amount is high, ash big, pentosan content height, heteroproteose cell, lignin knot therein
Structure is complicated, content is high, and the content of lignin and its derivant can reach 30-60%, be considered as do not have in paper-making pulping industry
The component of value, must do removal to lignin and its derivant and process in pulping process process.
Existing pulping technology for paper-making generally existing yield is low, high energy consumption, the technical problem such as seriously polluted.Its alkali paper-making
Pulping process includes several big operations such as blank, dedusting, steaming and decocting, washing, screening and bleaching, concentration.The core of soda pulping process is
Steaming and decocting and bleaching, cooking process therein is the most key.The quality of washing quality can also affect pulping yield.Prior art is still general
All over using high-alkali, high temperature, steaming and decocting under high pressure method, by lignin dissolution as far as possible, the extrusion liquid of steaming and decocting slurry is black liquor, it is difficult to returned
Receive.Boiling technology strong influence the carrying out of the operations such as screening, bleaching and concentration and quality.High-alkali, high temperature and high pressure condition
Steaming and decocting, its conventional highly basic consumption is the 8-18% of plant material weight, and boiling temperature is 155-185 DEG C, and pressure reaches 0.6-
0.8MPa, the lignin of dissolution is with the presence of alkali lignin form in cooking waste liquor, and silicone content is high, causes that cooking waste liquor viscosity is big, face
Darkish complexion is dark, increased the technology difficulty of bleaching, evaporation and concentration and alkali collection.The steaming and decocting early stage operation of existing soda pulping process technique,
Almost without what relatedness, they are simply core work to steaming and decocting, the bleaching process of operation and core between steaming and decocting and bleaching
Sequence does some simple physical breaks and cleaning treatment, and technostress is all concentrated in this section of operation of steaming and decocting, thus is difficult to
Take multi-faceted technical requirements into account.Alkali recovery technology in above-mentioned pulping process method be for woody paper-making pulping black liquor compared with
For ripe, but for herbaceous material paper-making pulping process black liquor then has very big technology barrier, its reason is waste liquid of straw pulp
Middle silicon component content is high, viscosity is big, filterability is poor, and during using Calx alkali reclaiming method, high content silicon can substantially reduce active stone
The availability of ash, furthermore poor fluidity, it is difficult to convey, also result in delivery pipe scale problems.
The content of the invention
It is an object of the invention to solve above-mentioned technical barrier, there is provided a kind of side that papermaking coarse particles are prepared with straw
Method, with yield it is high, energy consumption is low, free of contamination advantage, be suitable to xylophyta, be more suitable for nonwood plant raw material.
One of technical scheme is：
A kind of method for preparing papermaking coarse particles with straw, implements as follows：
(1) shred：Straw raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, water suction profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.0-2.5MPa air pressure 4-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles.
The also included optimization or/and improvement of above-mentioned technical proposal has：
One of preferred version, the unqualified material return to step (1) that 20mm is will be greater than in the step (2) continues to shred, will be little
Discard in the unqualified material of 10mm；
The two of preferred version, wash temperature is 50-75 DEG C in the step (2)；
The two of technical scheme are：
A kind of method for preparing finished product paper pulp using papermaking unscreened stock preparation method for material of the present invention, comprises the steps：
(1) shred：Straw raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, water suction profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.0-2.5MPa air pressure 4-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament ripening is added, adds steaming drift medicament to steam drift, add oxygen
Drift medicament bleaching；
(11) oar is washed：Wash away bleaching medicament；
(12) defibrination：Once carry out highly concentrated mill defibrination dense mill defibrination with；
(13) screening purification：By screening further slagging-off.
The also included optimization or/and improvement of above-mentioned technical proposal has：
One of preferred version, in the step (10) leaching drift ripening medicament is added, in 80-100 DEG C of temperature and 0.1-0.3MPa
Ripening 15-30 minutes under pressure condition；Add and steam drift medicament, then oxygen is passed through by drug liquid tube, in 80-100 DEG C of temperature and 0.3-
Drift reaction 30-60 minutes are steamed under the pressure condition of 0.5MPa；Successively add oxygen bleaching medicament, keep 0.3-0.5MPa oxygen pressures,
The bleaching action 30-60 minutes under 70-90 DEG C of temperature conditionss；
The two of preferred version, the good slurry Jing filter-press dehydrations of slagging-off gained, obtain finished product paper pulp in step (13) the screening purification；Institute
Obtain slurry and send into refining system reslurry；
The medicament of addition belongs to the common knowledge of paper industry, should be determined according to factors such as raw material, product quality requirements during operation
Species and consumption.
Gained finished product paper pulp can be sent directly into paper machine system size mixing, surf the Net, copy paper.
Coarse particles preparation is the FEOL of paper technology, and the quality of its quality is related to the water consumption of last part technology, medicine
Agent consumption etc., there is provided good coarse particles can substantially reduce water consumption and dosing, so as to reduce the totle drilling cost of papermaking.Medicament
The reduction of consumption can also reduce the discharge of harmful substance, contribute to changing the serious situation of paper industry environmental pollution.
Wherein step (1)-(6) are a kind of methods for preparing papermaking coarse particles with straw of the present invention, and step (1) will
Straw raw material shreds and removes silt particle and debris and step (2) screens out the qualified material of 10-20mm and removes dust, its
Purpose and effect are to make straw raw material reach certain uniformity and cleannes, are that rub step (4) make material by machinery
In fibre bundle separate Hong the quick-fried process of brooming and step (5) and create conditions.
A kind of method for preparing papermaking coarse particles with straw that the present invention is provided, its innovation is by Hong quick-fried place
Reason technology is used successfully in and is prepared in the critical process of papermaking coarse particles with straw raw material, breaches traditional soda papermaking
Lignin is considered as the technology prejudice of the garbage that must be removed in pulping process.
Internal steam work Efficient Conversion in the middle part of material can be mechanical energy by Hong the quick-fried handling process of step (5), be realized adiabatic
Expansion work.Because its working application time is short, energy density is high, and active position is concentrated, and makes to penetrate into cellulose and lignin decile
Water vapour molecule between son produces powerful blast potential energy, so as to accelerate separation, the degradation speed of material on a molecular scale.
The non-fiber composition of slurrying, such as lignin, pectin, tannin, heteroproteose cell, ash, resin especially can be unfavorable for inside raw material
Even air etc. is separated, digests, removed, and adverse effect of the non-fiber component to pulping process is eliminated to greatest extent, and material exists
Hong in quick-fried processing procedure, the saturated vapor of High Temperature High Pressure is rapid, be in depth impregnated into inside fibrous tissue, until in cell wall,
So that in coarse particles preparatory phase by the mass transport process of paper technology chemical reaction, the specific surface area of material, permeability, the uniformity
Deng all accomplishing optimization, for follow-up pulping process optimization strong technical conditions are provided so that subsequent technique can low alkali,
Carry out under conditions of low temperature, low reagent consumption, so as to the degraded for greatly reducing Hydrocarbon is lost, improve coarse particles
Bleachability.
Hong the quick-fried handling process of step (5) can be fully dissolved out lignin between cellulose, it is ensured that cellulose quality itself,
So as to utilize each type organic in material to greatest extent, the lignin of total amount of organic 30-60%, draft thing are especially accounted for
After material slurrying, the negative effect for affecting pulp-making waste-water to reclaim no longer is produced, and the dissolution of silicon is also significantly less than traditional soda
Pulping process such that it is able to realize efficiently bleaching, high yield pulp1, without black liquor, low energy consumption.
Lignin between Plant fiber is mainly made up of the base substance such as methoxyl group-OCH3, hydroxyl-OH and carbonyl-CO, this
Paper-making pulping process method is that free radical deep oxidation is reacted under a kind of low alkalinity, 70-100 DEG C of temperate condition, will be wooden
The each group modified of element becomes monomer molecule, and activates into Hydroxyl radical HO O- and hydrophilic active oxygen-derived free radicals O2- etc., destruction
Chromophoric group in lignin, aoxidizes the color development system in pigment, reaches the purpose of colour killing bleaching, is 9- in pH at the same time
Under the conditions of 10.5 low alkalinity, also cause oxygen bleaching agent such as H2O2Generating free radical-OH carries out deep oxidation reaction, destruction pectic substance,
Double bond in waxiness and nitrogen substance molecular structure so as to reduce cellulose intermolecular forces and remove, accelerated phenylpropyl alcohol alkanes
Construction unit is combined with carbon/carbon or ehter bond, make the monomer macromolecular compound lignin containing methoxyl group and hemicellulose from
It is fully dissolved out in fibre wall, monomer macromole lignin contains double bond or covalent bond mostly, in low alkalinity and surfactant etc.
Under pharmacy effect, there is radical polymerization or free radical type copolyreaction, new lignin polyester is generated, while dissolution is wooden
Element is mainly existed in solution with lignosulphonates, i.e. sulfonated lignin form, sulfonated lignin and traditional highly basic high temperature slurrying work
The alkali lignin of skill dissolution is compared, its good water solubility, and surface activity is strong, under the conditions of the media environment being softened, further increase with
Other ion complexations, polymerization and modified probability, become sulfonated lignin polymer, and retain in the slurry, reach raising slurry
The purpose of yield.Lignin polymers or lignosulfonate polymer, as " binding agent " or " filling in papermaking papermaking
Material " is used effectively.The composition such as not chloride, sulfur in each medicament in the technical program, is environmentally friendly oxygen bleaching medicament, steams drift
Separate out in disposed slurry in waste liquid and do not contain organic chloride, such as bioxin poisonous and harmful carcinogen, and retain to greatest extent
Hemicellulose and modified, polymerization lignin are not dissolved, and chromophoric group is changed into colourless group, thus the stage casing for producing is given up
Water pollution index is low, be easily handled, load is little, material washing that one part can be Jing after simple filtration for raw material chopping and
Diluted slurry water, remaining middle-stage wastewater sends into wastewater treatment reutilization system, and processing cost is low, and the water after process can be with up to standard
Discharge or all reclaim in pulping system.
Implementing the beneficial effect of technical solution of the present invention is：
1st, implementing steam explosion process using Hong quick-fried datatron can make full use of lignin, breach traditional soda paper-making pulping process
The middle technology prejudice that lignin is considered as the garbage that must be removed；
2nd, implementing steam explosion process using Hong quick-fried datatron fills can pectic substance in material, ash and sodium hydroxide abstract etc.
Divide degraded, significantly improve its removal effect, make the bleaching effect of subsequent handling good, various dosings and water consumption are little；
3rd, the present invention solve perplex always people nonwood plant slurrying difficulty it is big, wastewater flow rate is more, reagent consumption amount greatly, no
Easy reclaiming clean treatment technology problem, the such as technical problem of annual straw fiber raw material paper-making pulping, the finished product paper pulp of production
Physical index can reach and more than the index of hardwood chemical pulp, fracture length is up to 6.94km.Fundamentally solve system at present
It is the problems such as slurry paper-making industry high pollution, high energy consumption, high cost, paper making raw material in short supply, former using the straw enriched in nature
Material, the discarded branch of particularly annual straw or like vegetable straw and perennial plant, can promote agricultural resource cycling and reutilization and
Sustainable development.
Technical scheme is described in detail with reference to embodiment.
Description of the drawings
Nothing.
Specific embodiment
To make those skilled in the art more fully understand technical scheme, with reference to embodiment to present invention work
Further describe in detail.
The method that embodiment 1 prepares paper making pulp using cotton straw or Herba Apocyni veneti raw material：
(1) shred：The skin material and core material that cotton stalk or Herba Apocyni veneti raw material are obtained after skin-corn separation is cut to 10-
The segment of 20mm, remove silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；Qualified material is sent into
Next procedure, unqualified material sends into reject bin；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, wash temperature is 50-75 DEG C, is inhaled
Water profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.6-2.5MPa air pressure 5-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament is added, in 80-100 DEG C of temperature and 0.1-0.3MPa
Ripening 15-30 minutes under pressure condition；Add and steam drift medicament, then oxygen is passed through by drug liquid tube, in 80-100 DEG C of temperature and 0.3-
Drift reaction 30-60 minutes are steamed under the pressure condition of 0.5MPa；Successively add oxygen bleaching medicament, keep 0.3-0.5MPa oxygen pressures,
The bleaching action 30-60 minutes under 70-90 DEG C of temperature conditionss；
The medicament of addition belongs to the routine techniquess of paper industry, should be according to factors such as raw material, equipment, product quality requirements during operation
Determine species and consumption；
(11) oar is washed：Wash away the various auxiliary agents of addition；
(12) defibrination：Highly concentrated mill defibrination dense mill defibrination with being carried out successively, being beaten, disappear latent process after defibrination；
(13) screening purification：By screening further slagging-off, the good slurry Jing filter-press dehydrations of gained obtain finished product paper pulp；Gained slurry
Send into refining system reslurry.
Gained finished product paper pulp can be sent directly into paper machine system size mixing, surf the Net, copy paper.
The method that embodiment 2 prepares paper making pulp using Caulis et Folium Oryzae or wheat straw raw material：
(1) shred：Straw raw material or wheat straw raw material are cut to the segment of 10-20mm, remove silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；Qualified material is sent into
Next procedure, unqualified material sends into reject bin；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, wash temperature is 50-75 DEG C, is inhaled
Water profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.0-1.8MPa air pressure 4-12 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament is added, in 80-100 DEG C of temperature and 0.1-0.3MPa
Ripening 15-30 minutes under pressure condition；Add and steam drift medicament, then oxygen is passed through by drug liquid tube, in 80-100 DEG C of temperature and 0.3-
Drift reaction 30-60 minutes are steamed under the pressure condition of 0.5MPa；Successively add oxygen bleaching medicament, keep 0.3-0.5MPa oxygen pressures,
The bleaching action 30-60 minutes under 70-90 DEG C of temperature conditionss；
The medicament of addition belongs to the routine techniquess of paper industry, should be according to factors such as raw material, equipment, product quality requirements during operation
Determine species and consumption；
(11) oar is washed：Wash away the various auxiliary agents of addition；
(12) defibrination：Highly concentrated mill defibrination dense mill defibrination with is once carried out, disappear latent process after beating defibrination；
(13) screening purification：By screening further slagging-off, the good slurry Jing filter-press dehydrations of gained obtain finished product paper pulp；Gained slurry
Send into refining system reslurry.
Gained finished product paper pulp can be sent directly into paper machine system size mixing, surf the Net, copy paper.
The method that embodiment 3 prepares paper making pulp using phragmites communiss raw material：
(1) shred：Phragmites communiss raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；Qualified material is sent into
Next procedure, unqualified material sends into reject bin；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, wash temperature is 50-75 DEG C, is inhaled
Water profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.5-2.0MPa air pressure 5-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament is added, in 80-100 DEG C of temperature and 0.1-0.3MPa
Ripening 15-30 minutes under pressure condition；Add and steam drift medicament, then oxygen is passed through by drug liquid tube, in 80-100 DEG C of temperature and 0.3-
Drift reaction 30-60 minutes are steamed under the pressure condition of 0.5MPa；Successively add oxygen bleaching medicament, keep 0.3-0.5MPa oxygen pressures,
The bleaching action 30-60 minutes under 70-90 DEG C of temperature conditionss；
The medicament of addition belongs to the routine techniquess of paper industry, should be according to factors such as raw material, equipment, product quality requirements during operation
Determine species and consumption；
(11) oar is washed：Wash away the various auxiliary agents of addition；
(12) defibrination：Highly concentrated mill defibrination dense mill defibrination with is once carried out, disappear latent process after beating defibrination；
(13) screening purification：By screening further slagging-off, the good slurry Jing filter-press dehydrations of gained obtain finished product paper pulp；Gained slurry
Send into refining system reslurry.
Gained finished product paper pulp can be sent directly into paper machine system size mixing, surf the Net, copy paper.
The method that embodiment 4 prepares paper making pulp using Cortex Salicis Cheilophilae raw material：
(1) shred：Cortex Salicis Cheilophilae raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；Qualified material is sent into
Next procedure, unqualified material sends into reject bin；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, wash temperature is 50-75 DEG C, is inhaled
Water profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.8-2.5MPa air pressure 8-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament is added, in 80-100 DEG C of temperature and 0.1-0.3MPa
Ripening 15-30 minutes under pressure condition；Add and steam drift medicament, then oxygen is passed through by drug liquid tube, in 80-100 DEG C of temperature and 0.3-
Drift reaction 30-60 minutes are steamed under the pressure condition of 0.5MPa；Successively add oxygen bleaching medicament, keep 0.3-0.5MPa oxygen pressures,
The bleaching action 30-60 minutes under 70-90 DEG C of temperature conditionss；
The medicament of addition belongs to the common knowledge of paper industry, should be determined according to factors such as raw material, product quality requirements during operation
Species and consumption；
(11) oar is washed：Wash away the various auxiliary agents of addition；
(12) defibrination：Highly concentrated mill defibrination dense mill defibrination with is once carried out, disappear latent process after beating defibrination；
(13) screening purification：By screening further slagging-off, the good slurry Jing filter-press dehydrations of gained obtain finished product paper pulp；Gained slurry
Send into refining system reslurry.
Gained finished product paper pulp can be sent directly into paper machine system size mixing, surf the Net, copy paper.
It is understood that the above example principle being intended to be merely illustrative of the present and the exemplary embodiment party for adopting
Formula, but the invention is not limited in this, can technology according to the present invention scheme determine specific embodiment party with practical situation
Formula.For those skilled in the art, without departing from the spirit and substance in the present invention, can make
Various modifications and improvement, these modifications of increase and improvement are also considered as protection scope of the present invention.
Claims (6)
1. it is a kind of with straw prepare papermaking coarse particles method, it is characterised in that comprise the following steps：
(1) shred：Straw raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, water suction profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.0-2.5MPa air pressure 4-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles.
2. it is according to claim 1 it is a kind of with straw prepare papermaking coarse particles method, it is characterised in that the step
Suddenly the unqualified material return to step (1) that 20mm is will be greater than in (2) continues to shred, and the unqualified material less than 10mm is discarded.
3. it is according to claim 1 it is a kind of with straw prepare papermaking coarse particles method, it is characterised in that step
(2) wash temperature is 50-75 DEG C in.
4. the method that papermaking coarse particles method prepares finished product paper pulp is prepared described in a kind of employing claim 1, it is characterised in that bag
Include following steps：
(1) shred：Straw raw material is cut to the segment of 10-20mm, removes silt particle and debris；
(2) sieve：Step (1) resulting material is screened out into the qualified material of 10-20mm, and removes dust；
(3) washing infiltration：By step (2) resulting material by washing dust out and foreign body, water suction profit is dehydrated after rising；
(4) machinery is rubbed：Step (3) resulting material machinery is rubbed makes the fibre bundle in material tentatively dissociate, preliminary brooming；
(5) Hong quick-fried process：Step (4) resulting material is inserted in closed pressure vessel, high steam temperature-pressure is passed through, is kept
1.0-2.5MPa air pressure 4-15 minutes, material and steam pressure release are discharged in 60-75ms to atmospheric pressure, material is produced；
(6) sub-wire is rubbed：Material is sent into into squeeze crack machine by step (5) resulting material, squeezed stone roller, tear, rubbing are staple shape, are obtained
To finished product coarse particles；
(7) wash：Clear water displacement washing is used, is removed the gred；
(8) thickening：By dehydration concentrator press dewatering；
(9) presoak：Add bleach activator immersion；
(10) leaching drift：Material is sent in highly concentrated leaching drift tank, ripening medicament ripening is added, adds steaming drift medicament to steam drift, add oxygen
Drift medicament bleaching；
(11) oar is washed：Wash away bleaching medicament；
(12) defibrination：Once carry out highly concentrated mill defibrination dense mill defibrination with；
(13) screening purification：By screening further slagging-off.
5. it is according to claim 4 it is a kind of with straw prepare papermaking coarse particles method, it is characterised in that step
(10) ripening medicament, the ripening 15-30 minutes under the pressure condition of 80-100 DEG C of temperature and 0.1-0.3MPa are added in leaching drift；Plus
Enter to steam drift medicament, then oxygen is passed through by drug liquid tube, drift reaction is steamed under the pressure condition of 80-100 DEG C of temperature and 0.3-0.5MPa
30-60 minutes；Oxygen bleaching medicament, holding 0.3-0.5MPa oxygen pressures, the bleaching action under 70-90 DEG C of temperature conditionss are added successively
30-60 minutes.
6. it is according to claim 4 it is a kind of with straw prepare papermaking coarse particles method, it is characterised in that the step
Suddenly the good slurry Jing filter-press dehydrations of slagging-off gained in (13) screening purification, obtain finished product paper pulp, and gained slurry sends into refining system again
Beating.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277670A (en) * | 2018-03-12 | 2018-07-13 | 北京新锐得环保科技有限公司 | A kind of pulp of steam explosion system for salix monogolica slurrying |
| CN108385421A (en) * | 2018-04-08 | 2018-08-10 | 华南理工大学 | Lignocellulosic supercritical CO2Explosion and its component separation method |
| CN108642954A (en) * | 2018-04-04 | 2018-10-12 | 上海馨星环保科技有限公司 | A kind of method with stalk papermaking and its it is manufactured can degradable product |
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| CN109695172A (en) * | 2018-12-28 | 2019-04-30 | 江苏秸宝生物质新材料有限公司 | Straw biological mechanical pulp-making method and equipment |
| CN110004757A (en) * | 2019-04-18 | 2019-07-12 | 丹东东方轻工机械有限公司 | Plant raw material biological environmental production pulping process method |
| CN110886118A (en) * | 2019-12-05 | 2020-03-17 | 吴学军 | Method for separating lignin from papermaking straw |
| CN111676726A (en) * | 2020-03-05 | 2020-09-18 | 吴学军 | Process for producing pulp for papermaking by using corn straws as raw material |
| CN112500203A (en) * | 2020-12-04 | 2021-03-16 | 上海定业贸易有限公司 | Multi-section straw organic matter extraction method |
| CN112553933A (en) * | 2020-12-04 | 2021-03-26 | 上海定业贸易有限公司 | Multi-section straw fiber slurry extraction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323366A (en) * | 1998-09-25 | 2001-11-21 | 斯泰克技术有限公司 | Semi alkaline steam explosion treatment of fibrous material for the production of cellulose pulp |
| CN1786340A (en) * | 2005-10-14 | 2006-06-14 | 山东丰源中科生态科技有限公司 | Corrugated paper produced by steam blasting straw to pulp and its production method |
| CN102268833A (en) * | 2011-07-26 | 2011-12-07 | 中国科学院过程工程研究所 | Method for preparing dissolving pulp by carrying out steam explosion on crop straw and adopting prehydrolytic sulfate process |
| CN102337685A (en) * | 2010-07-20 | 2012-02-01 | 吴解生 | Non-pollution mechanical pulping with crop straws |
| CN104594090A (en) * | 2015-01-19 | 2015-05-06 | 北京中金元龙科技开发有限公司 | Water-free explosion pulping process |
| CN106191328A (en) * | 2016-09-23 | 2016-12-07 | 邵荣珠 | A kind of xylose production process |
-
2017
- 2017-01-05 CN CN201710007457.9A patent/CN106676924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323366A (en) * | 1998-09-25 | 2001-11-21 | 斯泰克技术有限公司 | Semi alkaline steam explosion treatment of fibrous material for the production of cellulose pulp |
| CN1786340A (en) * | 2005-10-14 | 2006-06-14 | 山东丰源中科生态科技有限公司 | Corrugated paper produced by steam blasting straw to pulp and its production method |
| CN102337685A (en) * | 2010-07-20 | 2012-02-01 | 吴解生 | Non-pollution mechanical pulping with crop straws |
| CN102268833A (en) * | 2011-07-26 | 2011-12-07 | 中国科学院过程工程研究所 | Method for preparing dissolving pulp by carrying out steam explosion on crop straw and adopting prehydrolytic sulfate process |
| CN104594090A (en) * | 2015-01-19 | 2015-05-06 | 北京中金元龙科技开发有限公司 | Water-free explosion pulping process |
| CN106191328A (en) * | 2016-09-23 | 2016-12-07 | 邵荣珠 | A kind of xylose production process |
Non-Patent Citations (1)
| Title |
|---|
| 陆强等编著: "《液体生物燃料技术与工程》", 31 January 2013, 上海科学技术出版社 * |
Cited By (14)
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| CN108277670A (en) * | 2018-03-12 | 2018-07-13 | 北京新锐得环保科技有限公司 | A kind of pulp of steam explosion system for salix monogolica slurrying |
| CN108277670B (en) * | 2018-03-12 | 2024-03-08 | 北京新锐得环保科技有限公司 | Steam explosion pulping system for salix psammophila pulping |
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| CN108385421A (en) * | 2018-04-08 | 2018-08-10 | 华南理工大学 | Lignocellulosic supercritical CO2Explosion and its component separation method |
| CN108824050A (en) * | 2018-04-26 | 2018-11-16 | 东莞市泰昌纸业有限公司 | A kind of method that highly concentrated pulping reduces waste paper fibre damage in the process |
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| CN109695172A (en) * | 2018-12-28 | 2019-04-30 | 江苏秸宝生物质新材料有限公司 | Straw biological mechanical pulp-making method and equipment |
| CN110004757B (en) * | 2019-04-18 | 2021-05-07 | 丹东东方轻工机械有限公司 | Biological environment-friendly pulping process method for plant raw materials |
| CN110004757A (en) * | 2019-04-18 | 2019-07-12 | 丹东东方轻工机械有限公司 | Plant raw material biological environmental production pulping process method |
| CN110886118A (en) * | 2019-12-05 | 2020-03-17 | 吴学军 | Method for separating lignin from papermaking straw |
| CN111676726A (en) * | 2020-03-05 | 2020-09-18 | 吴学军 | Process for producing pulp for papermaking by using corn straws as raw material |
| CN112553933A (en) * | 2020-12-04 | 2021-03-26 | 上海定业贸易有限公司 | Multi-section straw fiber slurry extraction method |
| CN112500203A (en) * | 2020-12-04 | 2021-03-16 | 上海定业贸易有限公司 | Multi-section straw organic matter extraction method |
| CN114960249A (en) * | 2022-05-05 | 2022-08-30 | 北京秸大环保科技有限公司 | Method for extracting fiber from straw |
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