CN104594089B - Chemi-mechanical pulp preparing method and device - Google Patents
Chemi-mechanical pulp preparing method and device Download PDFInfo
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- CN104594089B CN104594089B CN201410812080.0A CN201410812080A CN104594089B CN 104594089 B CN104594089 B CN 104594089B CN 201410812080 A CN201410812080 A CN 201410812080A CN 104594089 B CN104594089 B CN 104594089B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 229920001131 Pulp (paper) Polymers 0.000 title abstract 3
- 239000003513 alkali Substances 0.000 claims abstract description 164
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000004061 bleaching Methods 0.000 claims abstract description 61
- 239000000126 substance Substances 0.000 claims abstract description 46
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 238000004537 pulping Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 101
- 238000002360 preparation method Methods 0.000 claims description 29
- 239000002023 wood Substances 0.000 claims description 28
- 244000166124 Eucalyptus globulus Species 0.000 claims description 10
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 10
- 241000018646 Pinus brutia Species 0.000 claims description 10
- 235000011613 Pinus brutia Nutrition 0.000 claims description 10
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 3
- 238000009993 causticizing Methods 0.000 claims description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 241000220479 Acacia Species 0.000 description 9
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 9
- 239000002002 slurry Substances 0.000 description 7
- 241001343274 Dichrostachys spicata Species 0.000 description 3
- 238000002386 leaching Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004577 thatch Substances 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
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Paper (AREA)
Abstract
The invention discloses a chemi-mechanical pulp preparing method. The method comprises the following steps of presoaking hard materials, adding chemical alkali with the proportion of recovery alkali larger than 50% in a presoaking process, bleaching the presoaked materials, and adding chemical alkali with the proportion of commercial alkali larger than 50% in a bleaching process. The invention further discloses a chemi-mechanical pulp preparing device. By means of changing the using proportion of the presoaking section and the using proportion of the bleaching section in a pulping process, the pulp brightness is guaranteed, and most generated recovery alkali can be timely consumed away. Thus, the synchronous continuous operation of a pulp line and a recycling work section is achieved, and the pulping cost is reduced.
Description
Technical field
The present invention relates to the preparation method and its device of a kind of reducing rules.
Background technology
Various alkaline chemicals are needed to use in the preparation process of reducing rules, alkali content is higher in the waste water of generation, no
Can be expelled directly out, would generally be by waste water recycling device to obtain recovery alkali in order to solve this problem industry.Reclaim the recovery for obtaining
Alkali is used for substituting part commercially available alkali as the raw material of pulping section, not only environmental protection but also saving consumptive material.
In order to ensure that slurry line is smoothed out, the recovery alkali that Sewage treatment workshop section produces will at least be consumed in pulping section
More than 70%.However, when reclaim alkali in pulping section use ratio more than 50% when, into slurry whiteness be just unable to maintain that 75%
More than ISO is, it is necessary to additionally add other auxiliary chemicals, this causes slurrying relatively costly.
The content of the invention
Ensure into pulp brightness while generation can also be consumed in time the present invention solves the technical problem of one kind is provided
Most of reducing rules for reclaiming alkali preparation method and device, slurrying cost can be reduced.
In order to solve the above technical problems, the invention provides a kind of preparation method of reducing rules, it comprises the following steps：It is right
Hard material carries out pre-preg, and chemicals of the proportion more than 50% for reclaiming alkali is added during the pre-preg
Alkali；Material to carrying out resulting after the preimpregnation carries out bleaching, and adds commodity during the bleaching
Chemicals alkali of the proportion of alkali more than 50%.
Wherein, carrying out pre-preg to hard material, and the proportion for reclaiming alkali is added during the pre-preg
In the step of chemicals alkali more than 50%, the pre-preg includes one section of pre-preg and two sections of pre-pregs, and in institute
State during one section of pre-preg and two sections of pre-pregs that the chemicals alkali of the proportion more than 50% of alkali is reclaimed in addition respectively.
Wherein, the ratio of addition recovery alkali is great respectively during one section of pre-preg and two sections of pre-pregs
In the step of 50% chemicals alkali, the addition proportion for reclaiming alkali is respectively 100%.
Wherein, bleaching is carried out to carrying out resulting material after the preimpregnation, and in the bleaching process
In the step of proportion of middle addition commercially available alkali is more than 50% chemicals alkali, the addition proportion of the commercially available alkali accounts for 100%.
Wherein, during one section of pre-preg, the addition for reclaiming alkali is 20kg/adt~22kg/adt,
During two sections of pre-pregs, the addition for reclaiming alkali is 9kg/adt~11kg/adt, in the bleaching
During, the addition of the commercially available alkali is 15kg/adt~17kg/adt.
Wherein, before the step of one section of pre-preg and two sections of pre-pregs are carried out to the hard material, wrap respectively
Include to hard material extruding tear treatment.
Wherein, it is described in the step of processing hard material extruding tear, using wood chip shredder to described hard
Material carries out extruding tear treatment, wherein before the hard material carries out one section of pre-preg, being at least using moment of torsion
The wood chip shredder of 155kNm carries out extruding tear treatment to the hard material；The hard material that extruding tore is through one section
After pre-preg, and before two sections of pre-pregs are entered, the wood chip shredder of 145kNm is at least to described hard using moment of torsion
Material carries out extruding tear treatment again.
Wherein, the hard material is the mixed wood comprising Acacia, pine and Eucalyptus.
In order to solve the above technical problems, present invention also offers a kind of preparation facilities of reducing rules, it includes：Input machine
Structure, for being input into hard material；Preimpregnation mechanism, for the hard material pre-preg；Bleaching mechanism, after to preimpregnation
The material for being obtained carries out bleaching；Batch charging mechanism, the proportion for reclaiming alkali to preimpregnation mechanism addition is more than 50%
Chemicals alkali, and to it is described bleaching mechanism in add commercially available alkali proportion more than 50% chemicals alkali.
Wherein, the preimpregnation mechanism includes one section of preimpregnation mechanism and two sections of preimpregnation mechanisms, and the batch charging mechanism is respectively to one
Chemicals alkali of the proportion more than 50% for reclaiming alkali is added in section preimpregnation mechanism and two sections of preimpregnation mechanisms.
Wherein, the preparation facilities also includes pretreatment mechanism, and the pretreatment mechanism is used to squeeze the hard material
Pressure tear treatment, the pretreated hard material of preprocessed mechanism is used as the material for entering the preimpregnation mechanism.
The beneficial effects of the invention are as follows：The situation of prior art is different from, the present invention is by changing in pulping process
The use ratio of preimpregnation section and bleaching section, i.e., reclaim the consumption of alkali in preimpregnation section lifting, and the consumption of commercially available alkali is lifted in bleaching section,
Ensureing into pulp brightness while can also in time consume the most of of generation reclaims alkali, it is ensured that slurry line, recycle section are synchronous continuous
Operation, reduces slurrying cost.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the first embodiment of the preparation method of reducing rules of the present invention.
Fig. 2 is the schematic flow sheet of the second embodiment of the preparation method of reducing rules of the present invention.
Fig. 3 is the structural representation of the first embodiment of the preparation facilities of reducing rules of the present invention.
Fig. 4 is the structural representation of the second embodiment of the preparation facilities of reducing rules of the present invention.
Main element symbol description
Preparation facilities 100,200
Input mechanism 110,210
Pretreatment mechanism 220
First pretreatment mechanism 222
Second pretreatment mechanism 224
Preimpregnation mechanism 130,230
One section of preimpregnation mechanism 132,232
Two sections of preimpregnation mechanisms 134,234
Bleaching mechanism 140,240
Batch charging mechanism 150,250
Specific embodiment
The present invention is described in detail with implementation method below in conjunction with the accompanying drawings.
Refering to Fig. 1, the first embodiment of the preparation method of reducing rules of the present invention comprises the following steps：
Step S110：Pre-preg is carried out to hard material, and the ratio for reclaiming alkali is added during the pre-preg
It is great in 50% chemicals alkali.
The hard material is the raw material for preparing reducing rules of the present invention.The hard material is in needlebush and leaf wood
One or more.
The pre-preg refers to that will presoak one that chemicals is added in the hard material and is soaked therewith
Processing procedure.Wherein, generally the preimpregnation chemicals of addition is chemicals alkali, and the chemicals alkali generally includes to reclaim alkali and commercially available alkali
Mixed base.The wherein described alkali that reclaims refers to be obtained through nitre causticizing reaction again after the Waste water concentrating produced in pulping process is processed
The alkali for obtaining.
At present, generally use in the prior art during pre-preg add proportion respectively account for 50% recovery alkali and
The chemicals alkali of commercially available alkali.And be that the proportion for reclaiming alkali is added during the pre-preg in first embodiment of the invention
Chemicals alkali more than 50%.
Step S120：Material to carrying out resulting after the preimpregnation carries out bleaching, and in the bleaching
During add commercially available alkali proportion more than 50% chemicals alkali.
Bleaching is carried out through the hard material after pre-preg.Because bleaching section influences larger to pulp brightness,
The chemicals alkali of the proportion more than 50% of commercially available alkali is added during bleaching, the bleaching to slurry is more thorough.
The present embodiment is by changing the preimpregnation section in pulping process and bleaching the addition ratio of recovery alkali and commercially available alkali in section
Example, i.e., the consumption for reclaiming alkali in preimpregnation section lifting makes the proportion of recovery alkali more than 50%, and the consumption of commercially available alkali is lifted in bleaching section
Make the proportion of commercially available alkali more than 50%, ensure into pulp brightness while can also in time consume the most of of generation reclaims alkali, guarantor
The synchronous continuous operation of card slurry line, recycle section, reduces slurrying cost.
Refering to Fig. 2, the second embodiment of the preparation method of reducing rules of the present invention comprises the following steps：
Step S210：One section of pre-preg is carried out to hard material, and is added back during one section of pre-preg
The proportion for receiving alkali is 100% chemicals alkali.
The hard material is one or more in needlebush and leaf wood, for example, can use Acacia, pine and eucalyptus
One or more in wood, the present embodiment uses the mixed wood comprising Acacia, pine and Eucalyptus, wherein Acacia：Pine
Wood：The proportioning of Eucalyptus is in 60-80:10-30:In the range of 0-10.
The addition proportion for reclaiming alkali is 100% during one section of pre-preg, the addition for reclaiming alkali
It is 20kg/adt~22kg/adt to measure.
Step S220：Two sections of pre-pregs are carried out through the material after one section of pre-preg, and in two sections of pre-pregs
During add reclaim alkali proportion be 100% chemicals alkali.
Two sections of pre-pregs are carried out again through the hard material after one section of pre-preg, at two sections of preimpregnation
The addition proportion for reclaiming alkali is 100% during reason, and the addition for reclaiming alkali is 9kg/adt~11kg/adt.
One section of pre-preg and two sections of pre-pregs in the present embodiment can be using Austrian An Deli thatch stocks
Two sections of pre-preg techniques in the reducing rules pulping process of part company.
Step S230：Material to carrying out resulting after two sections of pre-pregs carries out bleaching, and described
The proportion that commercially available alkali is added during bleaching is 100% chemicals alkali.
The addition proportion of the commercially available alkali accounts for 100% during the bleaching.The addition of the commercially available alkali is
15kg/adt~17kg/adt.
The present embodiment is by changing the preimpregnation section in pulping process and bleaching the addition ratio of recovery alkali and commercially available alkali in section
The mode of example, i.e., individually alkali is reclaimed in addition during pre-preg, the independent addition commercially available alkali during bleaching, it is ensured that
Reclaim the consumption of alkali, it is ensured that the synchronous continuous operation of slurry line, recycle section, and reclaim alkali easy quilt during pre-preg
Leach, smaller is influenceed on pulp brightness, it is ensured that into pulp brightness.
It should be understood that the hard material is before pre-preg, also including extruding tear place to the hard material
Reason, making the structure of wood chip becomes loose expansion, increases the contact surface with the chemicals alkali of addition subsequently during pre-preg
Product.
It is pre- one section of pre-preg and two sections are carried out to the hard material by taking the pulping process of second embodiment as an example
Before the step of leaching treatment, also include respectively using wood chip shredder to hard material extruding tear treatment.Specifically, first
First carry out extruding tear to the hard material using wood chip shredder to process, the moment of torsion of the wood chip shredder is at least
155kN·m；Then, the hard material for being torn through extruding carries out one section of pre-preg, during one section of pre-preg
The proportion that alkali is reclaimed in addition is 100% chemicals alkali；Then, torn by wood chip again through the hard material after one section of pre-preg
The extruding tear treatment of machine is split, now the moment of torsion of the wood chip shredder is set at least 155kNm；Finally, squeezed through secondary
The hard material that pressure tore carries out two sections of pre-pregs, and the proportion that recovery alkali is added during two sections of pre-pregs is
100% chemicals alkali.
It should be understood that pre-preg of the present invention is not limited to using as two sections in second embodiment are pre-
Leaching is processed, and the pre-preg can also use three sections of pre-pregs only with one section of pre-preg in other embodiments.
It should be understood that in other embodiment of the invention the pre-preg process addition recovery alkali proportion and
The proportion of the commercially available alkali of the addition during bleaching is not limited to the scope of first embodiment.As long as pre-preg and drift
That is added respectively in white treatment reclaims the scope of the proportion more than 50% of alkali and commercially available alkali, for example, in the pre-preg
During add reclaim alkali proportion more than 60% chemicals alkali, during the bleaching add commercially available alkali proportion
Chemicals alkali more than 60%；Or the chemicals alkali of the proportion more than 85% of alkali is reclaimed in addition during the pre-preg,
The chemicals alkali of the proportion more than 85% of commercially available alkali is added during the bleaching；Or in the pre-preg mistake
Chemicals alkali of the proportion more than 95% for reclaiming alkali is added in journey, the ratio that commercially available alkali is added during the bleaching is great
Chemicals alkali etc. in 95% all may be used.
Refer to Fig. 3, the preparation facilities 100 of the reducing rules of first embodiment of the invention, including input mechanism 110, preimpregnation
Mechanism 130, bleaching mechanism 140 and batch charging mechanism 150.
The input mechanism 110 is used to be input into hard material.The hard material is the one kind in needlebush and leaf wood
Or it is various, can for example be used comprising Acacia, pine in the present embodiment using one or more in Acacia, pine and Eucalyptus
The mixed wood of wood and Eucalyptus, wherein Acacia：Pine：The proportioning of Eucalyptus is in 60-80:10-30:In the range of 0-10..
The preimpregnation mechanism 130 is used for the hard material pre-preg.
In the present embodiment, the preimpregnation mechanism 130 includes one section of preimpregnation mechanism 132 and two sections of preimpregnation mechanisms 134.Described one
Section preimpregnation mechanism 132 is used to carry out the hard material one section of pre-preg, and two sections of preimpregnation mechanism 134 is used for through one
Material after section pre-preg carries out two sections of pre-pregs again.
It should be understood that according to different pre-preg technique, in other embodiments, the preimpregnation mechanism is alternatively only
Including one section of preimpregnation mechanism, one section, two sections and three sections preimpregnation mechanism is may also comprise.
The bleaching mechanism 140 is used to carry out bleaching to the material obtained after preimpregnation.
The batch charging mechanism 150 is used to be reclaimed to the preimpregnation mechanism 130 addition the chemicals of the proportion more than 50% of alkali
Alkali, and to the chemicals alkali of the proportion more than 50% of addition commercially available alkali in the bleaching mechanism 140.
Refer to Fig. 4, the preparation facilities 200 of the reducing rules of second embodiment of the invention, including input mechanism 210, pre- place
Reason mechanism 220, preimpregnation mechanism 230, bleaching mechanism 240 and batch charging mechanism 250.
The input mechanism 210 in preparation facilities 200, preimpregnation mechanism 230, bleaching mechanism 240 and throwing in the present embodiment
Material mechanism 250 respectively with first embodiment provide reducing rules preparation facilities 100 input mechanism 110, preimpregnation mechanism 130,
Bleaching mechanism 140 and batch charging mechanism 150 are roughly the same, unlike, the preparation facilities 200 in the present embodiment also includes
Pretreatment mechanism 220, the pretreatment mechanism 220 is used for hard material extruding tear treatment, preprocessed mechanism 220
Pretreated hard material as enter it is described preimpregnation mechanism 230 material.When the pre-preg is using two sections of preimpregnation
During technique, the pretreatment mechanism 220 may include the first pretreatment mechanism 222 and the second pretreatment mechanism 224, be separately positioned on institute
Before stating one section of preimpregnation mechanism 232 and before described two sections preimpregnation mechanisms 234.
The present invention is further described below by specific embodiment.
Embodiment one：
Mixed wood of the input mechanism bull ladle containing Acacia, pine and Eucalyptus, wherein Acacia：Pine：Eucalyptus
Match is 70:20:10.
One section of pretreatment mechanism, such as wood chip shredder carry out extruding tear treatment to the hard material.Wherein described wood
The moment of torsion of piece shredder is set to 155kNm.
Enter in one section of preimpregnation mechanism that the hard material torn through pretreatment mechanism extruding enters in preimpregnation mechanism
One section of pre-preg of row, during one section of pre-preg, the feeder is to addition in described one section preimpregnation mechanism
Proportion is 100% recovery alkali, and the addition of the recovery alkali is 21kg/adt.
It is transported to two sections of pretreatment mechanisms again through the hard material after one section of pre-preg, is such as squeezed in wood chip shredder
Pressure tear treatment, wherein the moment of torsion of the wood chip shredder is set to 145kN.m.
Being presoaked into two sections in mechanisms from two sections of hard materials exported in pre-processing mechanism carries out two sections of pre-pregs,
During two sections of pre-pregs, the feeder is to the recovery that addition proportion in described two sections preimpregnation mechanisms is 100%
Alkali, the addition of the recovery alkali is 10kg/adt.
Entering bleaching mechanism from the material of two sections of preimpregnation mechanisms output carries out bleaching, in the bleaching process
In, to the commercially available alkali that proportion is 100% is added in the bleaching mechanism, the addition of the commercially available alkali is the feeder
16kg/adt。
Embodiment two：
The present embodiment is roughly the same with embodiment one, the difference is that is added during pre-preg and bleaching returns
Receive alkali different with the proportion of commercially available alkali.Specifically, during one section of pre-preg, the feeder is to described one section
The recovery alkali that proportion is 60% is added in preimpregnation mechanism；During two sections of pre-pregs, the feeder is to described
The recovery alkali that proportion is 60% is added in two sections of preimpregnation mechanisms；During the bleaching, the feeder is to described
The commercially available alkali that proportion is 60% is added in bleaching mechanism.
Embodiment three：
The present embodiment is roughly the same with embodiment one, the difference is that is added during pre-preg and bleaching returns
Receive alkali different with the proportion of commercially available alkali.Specifically, during one section of pre-preg, the feeder is to described one section
The recovery alkali that proportion is 80% is added in preimpregnation mechanism；During two sections of pre-pregs, the feeder is to described
The recovery alkali that proportion is 80% is added in two sections of preimpregnation mechanisms；During the bleaching, the feeder is to described
The commercially available alkali that proportion is 80% is added in bleaching mechanism.
Example IV：
The present embodiment is roughly the same with embodiment one, the difference is that is added during pre-preg and bleaching returns
Receive alkali different with the proportion of commercially available alkali.Specifically, during one section of pre-preg, the feeder is to described one section
The recovery alkali that proportion is 90% is added in preimpregnation mechanism；During two sections of pre-pregs, the feeder is to described
The recovery alkali that proportion is 90% is added in two sections of preimpregnation mechanisms；During the bleaching, the feeder is to described
The commercially available alkali that proportion is 90% is added in bleaching mechanism.
The reducing rules that will be obtained in above-described embodiment carry out examination with computer, and 75%ISO is maintained into pulp brightness is sustainable
More than.
The situation of prior art is different from, the present invention is reclaimed in the preimpregnation section and bleaching section by change in pulping process
Alkali and the adding proportion of commercially available alkali, i.e., reclaim the consumption of alkali in preimpregnation section lifting, and the consumption of commercially available alkali is lifted in bleaching section, is protecting
Pulp brightness is demonstrate,proved into while can also in time consume the most of of generation reclaims alkali, it is ensured that the synchronous continuous operation of slurry line, recycle section,
Reduce slurrying cost.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (9)
1. a kind of preparation method of reducing rules, methods described includes：
Pre-preg is carried out to hard material, and change of the proportion more than 50% for reclaiming alkali is added during the pre-preg
Product alkali；
Material to carrying out resulting after the preimpregnation carries out bleaching, and adds commodity during the bleaching
Chemicals alkali of the proportion of alkali more than 50%；
Wherein, carrying out pre-preg to hard material, and added during the pre-preg and reclaim the proportion of alkali and be more than
In the step of 50% chemicals alkali, the pre-preg includes one section of pre-preg and two sections of pre-pregs, and described one
The chemicals alkali of the proportion more than 50% of alkali is reclaimed in addition respectively during section pre-preg and two sections of pre-pregs；
Wherein, the chemicals alkali includes reclaiming the mixed base of alkali and commercially available alkali, and the recovery alkali refers to be produced in pulping process
The alkali obtained through nitre causticizing reaction again after raw Waste water concentrating treatment.
2. a kind of preparation method of reducing rules as claimed in claim 1, it is characterised in that：In one section of pre-preg and institute
In stating the step of chemicals alkali of the proportion of alkali more than 50% is reclaimed in addition respectively during two sections of pre-pregs, the recovery alkali
Addition proportion be respectively 100%.
3. a kind of preparation method of reducing rules as claimed in claim 2, it is characterised in that：It is resulting after the preimpregnation to carrying out
Material carry out bleaching, and the chemicals alkali of the proportion more than 50% of commercially available alkali is added during the bleaching
The step of in, the addition proportion of the commercially available alkali accounts for 100%.
4. a kind of preparation method of reducing rules as claimed in claim 3, it is characterised in that：In one section of pre-preg process
In, the addition for reclaiming alkali is 20kg/adt~22kg/adt, during two sections of pre-pregs, the recovery alkali
Addition be 9kg/adt~11kg/adt, during the bleaching, the addition of the commercially available alkali is 15kg/adt
~17kg/adt.
5. a kind of preparation method of reducing rules as claimed in claim 1, it is characterised in that：One is being carried out to the hard material
Before the step of section pre-preg and two sections of pre-pregs, respectively including to hard material extruding tear treatment.
6. a kind of preparation method of reducing rules as claimed in claim 4, it is characterised in that：It is described to be squeezed to the hard material
In the step of pressure tear treatment, extruding tear is carried out to the hard material using wood chip shredder and is processed, wherein described hard
Before material carries out one section of pre-preg, the wood chip shredder for being at least 155kNm using moment of torsion enters to the hard material
Row extruding tear treatment；After the hard material that extruding tore is through one section of pre-preg, and before two sections of pre-pregs are entered, adopt
The wood chip shredder of 145kNm is at least with moment of torsion carries out extruding tear treatment to the hard material again.
7. a kind of preparation method of reducing rules as claimed in claim 1, it is characterised in that：The hard material is comprising yearning between lovers
The mixed wood of wood, pine and Eucalyptus.
8. a kind of preparation facilities of reducing rules, it includes：
Input mechanism, for being input into hard material；
Preimpregnation mechanism, for the hard material pre-preg；
Bleaching mechanism, for carrying out bleaching to the material obtained after preimpregnation；
Batch charging mechanism, chemicals alkali of the proportion more than 50% for reclaiming alkali to preimpregnation mechanism addition, and to described
The chemicals alkali of the proportion more than 50% of commercially available alkali is added in bleaching mechanism；
Wherein, the preimpregnation mechanism includes one section of preimpregnation mechanism and two sections of preimpregnation mechanisms, and the batch charging mechanism is pre- to one section respectively
Chemicals alkali of the proportion more than 50% for reclaiming alkali is added in dipping machine structure and two sections of preimpregnation mechanisms；
Wherein, the chemicals alkali includes reclaiming the mixed base of alkali and commercially available alkali, and the recovery alkali refers to be produced in pulping process
The alkali obtained through nitre causticizing reaction again after raw Waste water concentrating treatment.
9. a kind of preparation facilities of reducing rules as claimed in claim 8, it is characterised in that：The preparation facilities also includes pre- place
Reason mechanism, the pretreatment mechanism be used for the hard material extruding tear treatment, preprocessed mechanism it is pretreated
Hard material is used as the material for entering the preimpregnation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812080.0A CN104594089B (en) | 2014-12-22 | 2014-12-22 | Chemi-mechanical pulp preparing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812080.0A CN104594089B (en) | 2014-12-22 | 2014-12-22 | Chemi-mechanical pulp preparing method and device |
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| Publication Number | Publication Date |
|---|---|
| CN104594089A CN104594089A (en) | 2015-05-06 |
| CN104594089B true CN104594089B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410812080.0A Active CN104594089B (en) | 2014-12-22 | 2014-12-22 | Chemi-mechanical pulp preparing method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042743A (en) * | 1989-09-01 | 1990-06-06 | 四川省乡镇企业造纸协会 | Soda recovery process of small paper mill and equipment |
| CN1142556A (en) * | 1996-05-27 | 1997-02-12 | 四川省内江市神州机器厂 | Alkali recovery from waste liquid of grass pulp papermaking by multi-point drying and burning |
| CN1285436A (en) * | 2000-09-29 | 2001-02-28 | 罗英铭 | Method and equipment for treating black liquor into boil solution |
| CN101418531A (en) * | 2008-12-11 | 2009-04-29 | 山东晨鸣纸业集团股份有限公司 | Method for preparing eucalyptus and poplar mixture material bleached chemical thermomechanical pulp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298045A (en) * | 1999-11-28 | 2001-06-06 | 石华才 | Resin process of recovering alkali and utilizing papermaking black liquor comprehensively |
| FI126694B (en) * | 2005-12-02 | 2017-04-13 | Metsä Board Oyj | Chemical-mechanical pulp and process for producing chemical-mechanical pulp |
| CN101613976B (en) * | 2009-07-17 | 2010-12-08 | 中国林业科学研究院林产化学工业研究所 | Method for preparing bleached chemi-mechanical pulp by using whole straw of mulberry tree branch |
| CN202081340U (en) * | 2011-04-30 | 2011-12-21 | 李刚荣 | High yield environment-friendly papermaking pulping system |
| CN103352384B (en) * | 2013-07-26 | 2016-04-13 | 金东纸业（江苏）股份有限公司 | Pulping process and apply its obtained paper pulp |
-
2014
- 2014-12-22 CN CN201410812080.0A patent/CN104594089B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042743A (en) * | 1989-09-01 | 1990-06-06 | 四川省乡镇企业造纸协会 | Soda recovery process of small paper mill and equipment |
| CN1142556A (en) * | 1996-05-27 | 1997-02-12 | 四川省内江市神州机器厂 | Alkali recovery from waste liquid of grass pulp papermaking by multi-point drying and burning |
| CN1285436A (en) * | 2000-09-29 | 2001-02-28 | 罗英铭 | Method and equipment for treating black liquor into boil solution |
| CN101418531A (en) * | 2008-12-11 | 2009-04-29 | 山东晨鸣纸业集团股份有限公司 | Method for preparing eucalyptus and poplar mixture material bleached chemical thermomechanical pulp |
Non-Patent Citations (1)
| Title |
|---|
| 用黑液预浸落叶松提高硫酸盐蒸煮效果;金辉等;《大连轻工业学院学报》;20020331;第21卷(第01期);第13-15页 * |
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