CN107604724A - The method for reclaiming paper mill sludge production brown paper - Google Patents
The method for reclaiming paper mill sludge production brown paper Download PDFInfo
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- CN107604724A CN107604724A CN201711056015.XA CN201711056015A CN107604724A CN 107604724 A CN107604724 A CN 107604724A CN 201711056015 A CN201711056015 A CN 201711056015A CN 107604724 A CN107604724 A CN 107604724A
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- 239000010802 sludge Substances 0.000 title claims abstract description 138
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000002002 slurry Substances 0.000 claims abstract description 80
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 230000002779 inactivation Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 96
- 239000010893 paper waste Substances 0.000 claims description 41
- 229920001131 Pulp (paper) Polymers 0.000 claims description 31
- 239000010985 leather Substances 0.000 claims description 27
- 230000018044 dehydration Effects 0.000 claims description 22
- 238000006297 dehydration reaction Methods 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 21
- 239000000839 emulsion Substances 0.000 claims description 21
- 238000007493 shaping process Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 239000011149 active material Substances 0.000 claims description 15
- 238000004537 pulping Methods 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 239000011268 mixed slurry Substances 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 12
- 238000004332 deodorization Methods 0.000 claims description 11
- 239000005959 Fosthiazate Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- DUFVKSUJRWYZQP-UHFFFAOYSA-N fosthiazate Chemical compound CCC(C)SP(=O)(OCC)N1CCSC1=O DUFVKSUJRWYZQP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004513 sizing Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000005416 organic matter Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 108010010803 Gelatin Proteins 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 229920000159 gelatin Polymers 0.000 claims description 6
- 239000008273 gelatin Substances 0.000 claims description 6
- 235000019322 gelatine Nutrition 0.000 claims description 6
- 235000011852 gelatine desserts Nutrition 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 102000004190 Enzymes Human genes 0.000 claims description 3
- 108090000790 Enzymes Proteins 0.000 claims description 3
- 244000007853 Sarothamnus scoparius Species 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- GNHOJBNSNUXZQA-UHFFFAOYSA-J potassium aluminium sulfate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GNHOJBNSNUXZQA-UHFFFAOYSA-J 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims 2
- 241000894006 Bacteria Species 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000011499 joint compound Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 239000011469 building brick Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 240000000249 Morus alba Species 0.000 description 1
- 235000008708 Morus alba Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Paper (AREA)
Abstract
The invention discloses the method for recovery paper mill sludge production brown paper, sludge is passed through press filtration by the present invention, high-temperature inactivation, it is once with slurry, sludge defibrination, it is secondary with slurry, wet end layering is manufactured paper with pulp after step and rear squeezing step, produce to obtain brown paper by follow-up papermaking procedure, new production technology is not but not reduction produces the quality of obtained finished product brown paper, the intensity and toughness of finished product brown paper can be lifted on the contrary, sludge circulation caused by papermaking is used, and it is to be used for papermaking, sludge discharge can either be reduced and reduce processing pressure of the paper mill to sludge, its production more clean environment firendly can also be made, reduce production cost, the sludge papermaking process of the present patent application has prior meaning for paper mill.
Description
Technical field
The present invention relates to paper-making technology field, more particularly, to the method for recovery paper mill sludge production brown paper.
Background technology
In the production process using regenerated papermaking, substantial amounts of sludge can be produced, in sludge except impurity, microorganism, have
Machine beyond the region of objective existence also contains substantial amounts of long fibre and chopped fiber.To the traditional treatment method of sludge, be fed directly to burn for boiler or
Person delivers to landfill area landfill.In modern production technology, more focus on environmental protection and benefit, therefore, start free of contamination to sludge progress
Environmental protection treatment, and secondary use sludge.Such as building brick is fabricated to after being dried, or composition is made as cement, but
It is that sludge is essentially close to 0 in the market demand of building brick and cement at present, and needs sludge or sludge papermaking enterprise
The finished product being made is transported to other enterprises, and shipment and delivery cost is too high, and transport process may pollute to society, therefore, this
It is obvious unrealistic for paper mill.
In the prior art, also there is papermaking enterprise to carry out papermaking using sludge, but need first to go to decontaminate using sludge papermaking
Mud, organic matter and impurity in mud etc., and complex process is removed, removal cost is high, after removing mud, organic matter and impurity
Resulting proportion of fibers is very low, and generally 5~10%, and also most of is chopped fiber, cannot be used directly for papermaking, particularly
The process of manufacturing paper with pulp can because diameter is less than wet end mesh and direct seepage, rate of manufacturing paper with pulp are extremely low, and the obtained finished product ox of production can be reduced
The intensity and toughness of mulberry paper, lose more than gain, therefore, more paper mills the self-service approach of sludge would rather be selected burning disposal or
Person's landfill disposal.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide the side of recovery paper mill sludge production brown paper
Method, patent sludge of the present invention are used to circulate papermaking, production process cleanliness without any pollution, energy-conserving and environment-protective.
To achieve these goals, the technical solution adopted in the present invention is：Reclaim the side of paper mill sludge production brown paper
Method, comprise the following steps：
1) waste paper pulp pulping stage, pulper pulping is passed through using the waste paper or litter decoration of recovery, then sequentially through height
After dense slug removing step, coarse screening step, low dense slug removing step, fine screening step and concentration step, the waste paper of suitable papermaking is made
Slurry, the slurry concentration of waste paper pulp are controlled 4~5%；
2) leather fiber slurry pulping stage, the leather of recovery is passed through into pulper pulping, then sequentially through highly concentrated slagging-off
After step, coarse screening step, low dense slug removing step, fine screening step and concentration step, the leather fiber slurry of suitable papermaking is made
Material, the slurry concentration of leather fiber slurry are controlled 8~10%；
3) emulsion matches somebody with somebody step step, is natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex by percentage by weight
10~20% and petroleum ether surplus be stirred, make natural boiled wood oil, gelatin and Heveatex in being dissolved in petroleum ether and form breast
Liquid；
4) paper mill sludge pre-treatment step, including following sub-step,
4.1) sub-step is precipitated, the sludge that paper waste is separated is pumped in sedimentation basin by conveyance conduit, and
Liquid dehydration mould release is quantitatively pumped into conveyance conduit leading portion, the input speed of liquid dehydration mould release is 200~300 Grams Per Minutes
Clock, wine calcium carbonate powder is uniformly sprayed in the pond face of sedimentation basin, then the natural sedimentation for making it pass through 0.5~1 hour, in sedimentation basin
Supernatant layer and lower sludge blanket are formed,
Wherein, liquid dehydration mould release includes the component of following percentage by weight, non-ionic polyacrylamide 40~50%,
Aluminium polychloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus, are dehydrated by liquid
Mould release makes sludge preliminary hydro-extraction and deodorization, and by the organic matter in fosthiazate suppression sludge, microorganism and kills therein
Mushroom；
4.2) press filtration sub-step, supernatant layer is first pumped to wastewater treatment center and handled, then lower sludge blanket is suitable
It is secondary to be pumped to thick filter press and pressure-sizing filter, large granular impurity and bulky grain clod are removed by press filtration, obtains soft form
Sludge siccative, the moisture content of sludge siccative is 50~60%；
4.3) high-temperature inactivation and deodorization sub-step, sludge siccative is transported by straight-through high-temperature continuous tunnel furnace by conveyer belt,
Make that interval is arranged on some ultraviolet lamps on the top of high temperature tunnel furnace and some infrared lamps towards conveyer belt and are formed one high
Warm area, the temperature of high-temperature region is 900~950 DEG C,
Make to shakeout the sludge siccative in conveyer belt and high-temperature region is passed through with the speed of 0.5~2.5 meter per second at a high speed, and make sludge
Siccative continues through 3~10 high-temperature regions, under 900~950 DEG C of instantaneous high-temperature environment, active material in sludge siccative
Active moment enhancing, the fosthiazate for mixing and being dispersed in sludge siccative then make the enzyme in the active material in sludge siccative fast
Speed is decomposed and dead, and the DNA structure of ultraviolet lamp then rapid damage active material, active material include organic matter, microorganism
And mushroom, 900~950 DEG C of instantaneous high-temperature do sludge while destroying and killing the active material on sludge siccative upper strata
Moisture content, stink in material and paper-making process addition and remain in chemicals in sludge and quickly evaporate, and dirt will not be made
Fiber ignition in mud siccative, waste gas is extracted by the exhausting system of straight-through high-temperature continuous tunnel furnace both sides, delivers to waste gas station processing,
Obtain the hygienic sludge siccative that moisture content is 40~50%；
5) once step with slurry, leather fiber slurry and hygienic sludge siccative are pressed 1：5~6 part by weight conveys simultaneously
To mixing plant, stir, continuous conveying emulsion, emulsion and sterile dirt are quantified to mixing plant by measuring pump in whipping process
The part by weight of mud siccative is 1：50~60, whipping process makes chopped fiber in hygienic sludge siccative and long fibre be dispersed to leather
Between the animal origin of fibre stuff, emulsion dispersion and the surface for being attached to chopped fiber, long fibre and animal origin, sludge is obtained
Centrotheca；
6) sludge refining step, sludge centrotheca being delivered to paste mill grinding, the grinding flute profile of fiberizer selects broom fin,
Defibrination process makes chopped fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with emulsion, newborn after defibrination
Liquid makes chopped fiber and long fibre is bonded in animal origin respectively, and free emulsion formation internal package has small of mud
Grain, obtains the sludge slurry with composite fibre, and the slurry concentration of sludge slurry is controlled 10~15%；
7) secondary step with slurry, waste paper pulp, leather fiber slurry and sludge slurry are pumped to slurry bucket, waste paper respectively
The weight ratio of slurry, leather fiber slurry and sludge slurry is 1：0.1~0.2：0.2~0.3, stirring 10~15 points with slurry bucket
Clock, and by the temperature control with slurry bucket at 60~70 DEG C, it is continuous slowly in slurry bucket by constant displacement pump during with slurry
Natural ox glue is put into, the input speed of natural ox glue is 5 Grams Per Seconds, while lifts fibre pick density, and makes the fibre of waste paper pulp
The composite fibre of dimension, the animal origin in leather fiber slurry and sludge slurry mutually bonds and forms intertexture and reticulate fibre respectively
Dimension, form mixed slurry；
8) wet end is layered step of manufacturing paper with pulp, and sets three ponds of manufacturing paper with pulp in wet end, waste paper pulp is pumped to first respectively and manufactured paper with pulp
Pond and the 3rd is manufactured paper with pulp pond, and mixed slurry is pumped into second manufactures paper with pulp pond, make wet end sequentially pass through first manufacture paper with pulp pond, second manufacture paper with pulp pond
Manufactured paper with pulp pond with the 3rd, wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and wet end is second
Manufacture paper with pulp pond manufacture paper with pulp shaping obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer uniform fold is on off line pulp layer, net
Portion obtains the online pulp layer formed by waste paper pulp in the 3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and pulp layer uniform fold of surfing the Net is in middle net pulp layer
On, the long fibre of reticular fibre and online pulp layer in middle net pulp layer is mutually interspersed and bonds and forms a fiber and mutually intert
Cohesive upper abutted surface, the long fibre of reticular fibre in middle net pulp layer and off line pulp layer is mutually interspersed and bonds and to form one fine
Dimension mutually interts the lower abutted surface of bonding, manufactures paper with pulp to obtain compound pulp layer in wet end；
9) step is squeezed after, compound pulp layer is delivered into rear press section press is dehydrated, compound pulp layer in rear press section sequentially
Roller group is squeezed by some groups of spaced high pressures and low-pressure squeezes roller group, makes compound pulp layer by several times one pine
One tight expressing process, online pulp layer, middle net pulp layer and off line pulp layer in compound pulp layer are improved while dehydration rate is improved
Between affinity and cohesive force, moisture content is reduced to less than 60%；
10) follow-up papermaking procedure, the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion, surface is applied
Glue machine top sizing, rear drying cylinder portion are dried；
11) finished product, brown paper is obtained after winding.
In further technical scheme, in the high-temperature inactivation and deodorization sub-step, the high-temperature region is by some big
The light of power UV line lamp and Infrared High-Power line lamp irradiates to be formed, and whole high-temperature region is full of ultraviolet and infrared ray, high temperature
Area is rectangular, and the length of high-temperature region is 0.5~0.8 meter, and width is slightly less than the width of the conveyer belt；
In further technical scheme, in the high-temperature inactivation and deodorization sub-step, the sludge in the conveyer belt is shakeout
The thickness of siccative is 1~2cm thick, and the conveyer belt passes through high-temperature region at a high speed with the speed of 1~1.5 meter per second, and makes sludge siccative
For consecutive intervals by 5~6 high-temperature regions, the distance between adjacent two high-temperature regions are 1~2 meter.
In further technical scheme, in the sludge refining step, the molecule for being enclosed with mud is averaged
Size controlling is in 0.1~0.2mm.
In further technical scheme, the secondary step with slurry, the number of plies of the reticular fibre is less than 3 layers, netted fibre
Some molecules for being enclosed with mud are stained with the grid of dimension.
In further technical scheme, the wet end layering is manufactured paper with pulp in step, wet end is sequentially passed through first and is manufactured paper with pulp pond, the
One light press section, second manufacture paper with pulp pond, the second light press section, the 3rd manufacture paper with pulp pond and the 3rd light press section,
Wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and off line pulp layer is by first
Slightly squeezing with after mild dehydration, forms an off line pulp layer tentatively shaped, by containing for off line pulp layer to light press section on wet end
Water rate is controlled 50~60%；
Wet end second manufacture paper with pulp pond manufacture paper with pulp shaping obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer is covered in down
The surface of net pulp layer, by the second light press section, slightly with after mild dehydration, it is tentatively fixed to form one on off line pulp layer surface for squeezing
The middle net pulp layer of type, the moisture control of middle net pulp layer is 50~60%；
Wet end obtains the online pulp layer formed by waste paper pulp in the 3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, online pulp layer uniform fold
On middle net pulp layer, by the 3rd light press section, slightly with after mild dehydration, it is preliminary to form one on middle net pulp layer surface for squeezing
The online pulp layer of sizing, the moisture control for pulp layer of surfing the Net is 50~60%.
In further technical scheme, squeezed after described in step, rear press section is provided with 3~5 groups of high pressure pressure roller
Group and 3~5 groups of low-pressures squeeze roller group, and low-pressure squeezing roller group is provided between two neighboring high pressure squeezing roller group, high
For the Stress control of pressure squeezing roller group in 0.5~0.6MPa, low-pressure squeezes the Stress control of roller group in 0.1~0.2MPa.
After adopting the above technical scheme, the present invention has advantages below：
First, sludge caused by papermaking is used to produce brown paper by the present invention, and paper mill sludge recycles, and makes its production more
Add cleaning, production process is pollution-free, more energy-conserving and environment-protective, the intermediate layer using sludge as brown paper, and makes the fibre between each layer
Tie up mutually interspersed and interweave, new production technology is not but not reduction produces the quality of obtained finished product brown paper, on the contrary can
Lift the intensity and toughness of finished product brown paper.
Second, the present invention makes waste paper pulp reduce 20~30%, reduces the usage amount of new slurry, and the processing cost of sludge
Far below the cost of waste paper pulp, production cost is reduced while solving sludge problem.
3rd, the present invention effectively solves the sludge handling problem in paper mill, reduces sludge discharge, reduces environmental purification and sets
Standby operating pressure and operating cost, in terms of the recycling of sludge, its productivity effect and comprehensive benefit are above directly burning
Burn, there is preferable application prospect, thus the sludge papermaking process of present patent application for paper mill with more important
Meaning.
Embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Embodiment one
The method for reclaiming paper mill sludge production brown paper, comprises the following steps：
1) waste paper pulp pulping stage, pulper pulping is passed through using the waste paper or litter decoration of recovery, then sequentially through height
After dense slug removing step, coarse screening step, low dense slug removing step, fine screening step and concentration step, the waste paper of suitable papermaking is made
Slurry, the slurry concentration of waste paper pulp are controlled 4~5%；
2) leather fiber slurry pulping stage, the leather of recovery is passed through into pulper pulping, then sequentially through highly concentrated slagging-off
After step, coarse screening step, low dense slug removing step, fine screening step and concentration step, the leather fiber slurry of suitable papermaking is made
Material, the slurry concentration of leather fiber slurry are controlled 8~10%；
3) emulsion matches somebody with somebody step step, is natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex by percentage by weight
10~20% and petroleum ether surplus be stirred, make natural boiled wood oil, gelatin and Heveatex in being dissolved in petroleum ether and form breast
Liquid；
4) paper mill sludge pre-treatment step, including following sub-step,
4.1) sub-step is precipitated, the sludge that paper waste is separated is pumped in sedimentation basin by conveyance conduit, and
Liquid dehydration mould release is quantitatively pumped into conveyance conduit leading portion, the input speed of liquid dehydration mould release is 200~300 Grams Per Minutes
Clock, wine calcium carbonate powder is uniformly sprayed in the pond face of sedimentation basin, then the natural sedimentation for making it pass through 0.5~1 hour, in sedimentation basin
Supernatant layer and lower sludge blanket are formed,
Wherein, liquid dehydration mould release includes the component of following percentage by weight, non-ionic polyacrylamide 40~50%,
Aluminium polychloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus, are dehydrated by liquid
Mould release makes sludge preliminary hydro-extraction and deodorization, and by the organic matter in fosthiazate suppression sludge, microorganism and kills therein
Mushroom；
4.2) press filtration sub-step, supernatant layer is first pumped to wastewater treatment center and handled, then lower sludge blanket is suitable
It is secondary to be pumped to thick filter press and pressure-sizing filter, large granular impurity and bulky grain clod are removed by press filtration, obtains soft form
Sludge siccative, the moisture content of sludge siccative is 50~60%；
4.3) high-temperature inactivation and deodorization sub-step, sludge siccative is transported by straight-through high-temperature continuous tunnel furnace by conveyer belt,
Make that interval is arranged on some ultraviolet lamps on the top of high temperature tunnel furnace and some infrared lamps towards conveyer belt and are formed one high
Warm area, the temperature of high-temperature region is 900~950 DEG C,
Make to shakeout the sludge siccative in conveyer belt and high-temperature region is passed through with the speed of 0.5~2.5 meter per second at a high speed, and make sludge
Siccative continues through 3~10 high-temperature regions, under 900~950 DEG C of instantaneous high-temperature environment, active material in sludge siccative
Active moment enhancing, the fosthiazate for mixing and being dispersed in sludge siccative then make the enzyme in the active material in sludge siccative fast
Speed is decomposed and dead, and the DNA structure of ultraviolet lamp then rapid damage active material, active material include organic matter, microorganism
And mushroom, 900~950 DEG C of instantaneous high-temperature do sludge while destroying and killing the active material on sludge siccative upper strata
Moisture content, stink in material and paper-making process addition and remain in chemicals in sludge and quickly evaporate, and dirt will not be made
Fiber ignition in mud siccative, waste gas is extracted by the exhausting system of straight-through high-temperature continuous tunnel furnace both sides, delivers to waste gas station processing,
Obtain the hygienic sludge siccative that moisture content is 40~50%；
5) once step with slurry, leather fiber slurry and hygienic sludge siccative are pressed 1：5~6 part by weight conveys simultaneously
To mixing plant, stir, continuous conveying emulsion, emulsion and sterile dirt are quantified to mixing plant by measuring pump in whipping process
The part by weight of mud siccative is 1：50~60, whipping process makes chopped fiber in hygienic sludge siccative and long fibre be dispersed to leather
Between the animal origin of fibre stuff, emulsion dispersion and the surface for being attached to chopped fiber, long fibre and animal origin, sludge is obtained
Centrotheca；
6) sludge refining step, sludge centrotheca being delivered to paste mill grinding, the grinding flute profile of fiberizer selects broom fin,
Defibrination process makes chopped fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with emulsion, newborn after defibrination
Liquid makes chopped fiber and long fibre is bonded in animal origin respectively, and free emulsion formation internal package has small of mud
Grain, obtains the sludge slurry with composite fibre, and the slurry concentration of sludge slurry is controlled 10~15%；
7) secondary step with slurry, waste paper pulp, leather fiber slurry and sludge slurry are pumped to slurry bucket, waste paper respectively
The weight ratio of slurry, leather fiber slurry and sludge slurry is 1：0.1~0.2：0.2~0.3, stirring 10~15 points with slurry bucket
Clock, and by the temperature control with slurry bucket at 60~70 DEG C, it is continuous slowly in slurry bucket by constant displacement pump during with slurry
Natural ox glue is put into, the input speed of natural ox glue is 5 Grams Per Seconds, while lifts fibre pick density, and makes the fibre of waste paper pulp
The composite fibre of dimension, the animal origin in leather fiber slurry and sludge slurry mutually bonds and forms intertexture and reticulate fibre respectively
Dimension, form mixed slurry；
8) wet end is layered step of manufacturing paper with pulp, and sets three ponds of manufacturing paper with pulp in wet end, waste paper pulp is pumped to first respectively and manufactured paper with pulp
Pond and the 3rd is manufactured paper with pulp pond, and mixed slurry is pumped into second manufactures paper with pulp pond, make wet end sequentially pass through first manufacture paper with pulp pond, second manufacture paper with pulp pond
Manufactured paper with pulp pond with the 3rd, wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and wet end is second
Manufacture paper with pulp pond manufacture paper with pulp shaping obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer uniform fold is on off line pulp layer, net
Portion obtains the online pulp layer formed by waste paper pulp in the 3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and pulp layer uniform fold of surfing the Net is in middle net pulp layer
On, the long fibre of reticular fibre and online pulp layer in middle net pulp layer is mutually interspersed and bonds and forms a fiber and mutually intert
Cohesive upper abutted surface, the long fibre of reticular fibre in middle net pulp layer and off line pulp layer is mutually interspersed and bonds and to form one fine
Dimension mutually interts the lower abutted surface of bonding, manufactures paper with pulp to obtain compound pulp layer in wet end；
9) step is squeezed after, compound pulp layer is delivered into rear press section press is dehydrated, compound pulp layer in rear press section sequentially
Roller group is squeezed by some groups of spaced high pressures and low-pressure squeezes roller group, makes compound pulp layer by several times one pine
One tight expressing process, online pulp layer, middle net pulp layer and off line pulp layer in compound pulp layer are improved while dehydration rate is improved
Between affinity and cohesive force, moisture content is reduced to less than 60%；
10) follow-up papermaking procedure, the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion, surface is applied
Glue machine top sizing, rear drying cylinder portion are dried；
11) finished product, brown paper is obtained after winding.
Embodiment two
The method for reclaiming paper mill sludge production brown paper, the technique in the key step of the present embodiment and corresponding processing step
Parameter is identical with implementing one, and its something in common is not repeating, and its difference is, comprises the following steps：
1) waste paper pulp pulping stage.
2) leather fiber slurry pulping stage.
3) emulsion matches somebody with somebody step step.
4) paper mill sludge pre-treatment step.
4.1) sub-step is precipitated；
4.2) press filtration sub-step,
4.3) high-temperature inactivation and deodorization sub-step, high-temperature region are by some high-power ultraviolet lamps and Infrared High-Power line
The light of lamp irradiates to be formed, and whole high-temperature region is full of ultraviolet and infrared ray, and high-temperature region is rectangular, and the length of high-temperature region is 0.5
~0.8 meter, width is slightly less than the width of the conveyer belt,
The thickness shakeout in the sludge siccative of the conveyer belt is that 1~2cm is thick, and the conveyer belt is with 1~1.5 meter per second
Speed passes through high-temperature region at a high speed, and makes sludge siccative consecutive intervals by 5~6 high-temperature regions, between adjacent two high-temperature regions
Distance be 1~2 meter.
5) once step with slurry.
6) sludge refining step, the average grain diameter for being enclosed with the molecule of mud are controlled in 0.1~0.2mm.
7) secondary step with slurry, the number of plies of reticular fibre are less than 3 layers, some be enclosed with are stained with the grid of reticular fibre
The molecule of mud.
8) wet end layering is manufactured paper with pulp step, wet end is sequentially passed through first and is manufactured paper with pulp pond, the first light press section, second manufacture paper with pulp pond,
Second light press section, the 3rd manufacture paper with pulp pond and the 3rd light press section,
Wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and off line pulp layer is by first
Slightly squeezing with after mild dehydration, forms an off line pulp layer tentatively shaped, by containing for off line pulp layer to light press section on wet end
Water rate is controlled 50~60%；
Wet end second manufacture paper with pulp pond manufacture paper with pulp shaping obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer is covered in down
The surface of net pulp layer, by the second light press section, slightly with after mild dehydration, it is tentatively fixed to form one on off line pulp layer surface for squeezing
The middle net pulp layer of type, the moisture control of middle net pulp layer is 50~60%；
Wet end obtains the online pulp layer formed by waste paper pulp in the 3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, online pulp layer uniform fold
On middle net pulp layer, by the 3rd light press section, slightly with after mild dehydration, it is preliminary to form one on middle net pulp layer surface for squeezing
The online pulp layer of sizing, the moisture control for pulp layer of surfing the Net is 50~60%.
9) step is squeezed after, rear press section is provided with 3~5 groups of high pressure squeezing roller groups and 3~5 groups of low-pressure pressure roller
Group, two neighboring high pressure are provided with low-pressure squeezing roller group between squeezing roller group, and high pressure squeezes the Stress control of roller group
In 0.5~0.6MPa, the Stress control of low-pressure squeezing roller group is in 0.1~0.2MPa.Make compound pulp layer by several times one
A loose tight expressing process, make the online pulp layer in compound pulp layer, fiber forms multiple phase between middle net pulp layer and off line pulp layer
To compressing and rubbing against, increase the mutually interspersed depth of the fiber of online pulp layer, middle net pulp layer and off line pulp layer, while form breathing
Effect, effectively discharges internal stress, reduces resilience, and online pulp layer in compound pulp layer, middle net are improved while dehydration rate is improved
Affinity and cohesive force between pulp layer and off line pulp layer, lift the intensity and toughness of finished product brown paper.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, there will be changes, this specification content should not be construed as to the present invention in specific embodiments and applications
Limitation.
Claims (7)
1. reclaim the method for paper mill sludge production brown paper, it is characterised in that comprise the following steps：
1) waste paper pulp pulping stage, pass through pulper pulping using the waste paper or litter decoration of recovery, then removed sequentially through highly concentrated
After slag step, coarse screening step, low dense slug removing step, fine screening step and concentration step, the waste paper pulp of suitable papermaking is made,
The slurry concentration of waste paper pulp is controlled 4~5%；
2) leather fiber slurry pulping stage, the leather of recovery is passed through into pulper pulping, then sequentially through highly concentrated slug removing step,
After coarse screening step, low dense slug removing step, fine screening step and concentration step, the leather fiber slurry of suitable papermaking, skin is made
The slurry concentration for removing from office fibre stuff is controlled 8~10%；
3) emulsion matches somebody with somebody step step, by percentage by weight be natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex 10~
20% and petroleum ether surplus be stirred, make natural boiled wood oil, gelatin and Heveatex in being dissolved in petroleum ether and form emulsion；
4) paper mill sludge pre-treatment step, including following sub-step,
4.1) sub-step is precipitated, the sludge that paper waste is separated is pumped in sedimentation basin by conveyance conduit, and defeated
Pipeline leading portion is sent quantitatively to be pumped into liquid dehydration mould release, the input speed of liquid dehydration mould release is 200~300 gram/minutes,
Wine calcium carbonate powder is uniformly sprayed in the pond face of sedimentation basin, then the natural sedimentation for making it pass through 0.5~1 hour, is formed in sedimentation basin
Supernatant layer and lower sludge blanket,
Wherein, liquid dehydration mould release includes the component of following percentage by weight, non-ionic polyacrylamide 40~50%, polymerization
Aluminium chloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus, are dehydrated release by liquid
Agent makes sludge preliminary hydro-extraction and deodorization, and by the organic matter in fosthiazate suppression sludge, microorganism and kills mushroom therein；
4.2) press filtration sub-step, supernatant layer is first pumped to wastewater treatment center and handled, then by lower sludge blanket sequentially pump
Thick filter press and pressure-sizing filter are delivered to, large granular impurity and bulky grain clod is removed by press filtration, obtains the sludge of soft form
Siccative, the moisture content of sludge siccative is 50~60%；
4.3) high-temperature inactivation and deodorization sub-step, sludge siccative is transported by straight-through high-temperature continuous tunnel furnace by conveyer belt, between making
Towards conveyer belt and a high-temperature region is formed every some ultraviolet lamps installed in the top of high temperature tunnel furnace and some infrared lamps,
The temperature of high-temperature region is 900~950 DEG C,
Make to shakeout the sludge siccative in conveyer belt and high-temperature region is passed through with the speed of 0.5~2.5 meter per second at a high speed, and make sludge siccative
3~10 high-temperature regions are continued through, under 900~950 DEG C of instantaneous high-temperature environment, the activity of the active material in sludge siccative
Moment strengthens, and the fosthiazate for mixing and being dispersed in sludge siccative then makes the enzyme in the active material in sludge siccative quickly divide
Solution and it is dead, and the DNA structure of ultraviolet lamp then rapid damage active material, active material include organic matter, microorganism and bacterium
Class, 900~950 DEG C of instantaneous high-temperature make in sludge siccative while destroying and killing the active material on sludge siccative upper strata
Moisture content, stink and paper-making process addition and remain in chemicals in sludge and quickly evaporate, and sludge will not be done
Fiber ignition in material, waste gas is extracted by the exhausting system of straight-through high-temperature continuous tunnel furnace both sides, deliver to waste gas station processing, obtain
Moisture content is 40~50% hygienic sludge siccative；
5) once step with slurry, leather fiber slurry and hygienic sludge siccative are pressed 1：5~6 part by weight is delivered to and stirred simultaneously
Station is mixed, is stirred, is done in whipping process by measuring pump to the quantitative continuous conveying emulsion of mixing plant, emulsion with hygienic sludge
The part by weight of material is 1：50~60, whipping process makes chopped fiber in hygienic sludge siccative and long fibre be dispersed to leather fiber
Between the animal origin of slurry, emulsion dispersion and the surface for being attached to chopped fiber, long fibre and animal origin, at the beginning of obtaining sludge
Slurry；
6) sludge refining step, sludge centrotheca is delivered to paste mill grinding, the grinding flute profile of fiberizer selects broom fin, defibrination
Process makes chopped fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with emulsion, after defibrination emulsion make
Chopped fiber and long fibre are bonded in animal origin respectively, and free emulsion formation internal package has the molecule of mud, obtains
To the sludge slurry with composite fibre, the slurry concentration of sludge slurry is controlled 10~15%；
7) secondary step with slurry, waste paper pulp, leather fiber slurry and sludge slurry are pumped to slurry bucket, secondary stock respectively
The weight ratio of material, leather fiber slurry and sludge slurry is 1：0.1~0.2：0.2~0.3, stirring 10~15 points with slurry bucket
Clock, and by the temperature control with slurry bucket at 60~70 DEG C, it is continuous slowly in slurry bucket by constant displacement pump during with slurry
Natural ox glue is put into, the input speed of natural ox glue is 5 Grams Per Seconds, while lifts fibre pick density, and makes the fibre of waste paper pulp
The composite fibre of dimension, the animal origin in leather fiber slurry and sludge slurry mutually bonds and forms intertexture and reticulate fibre respectively
Dimension, form mixed slurry；
8) wet end layering is manufactured paper with pulp step, and three ponds of manufacturing paper with pulp are set in wet end, waste paper pulp is pumped to respectively first manufacture paper with pulp pond and
3rd manufactures paper with pulp pond, and mixed slurry is pumped into second manufactures paper with pulp pond, make wet end sequentially pass through first manufacture paper with pulp pond, second manufacture paper with pulp Chi He
Three manufacture paper with pulp pond, and wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and wet end is manufactured paper with pulp second
Pond, which manufactures paper with pulp to be molded, obtains the middle net pulp layer formed by mixed slurry, and on off line pulp layer, wet end exists middle net pulp layer uniform fold
3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp obtains the online pulp layer formed by waste paper pulp, surf the Net pulp layer uniform fold in middle net pulp layer it
On, the long fibre of reticular fibre in middle net pulp layer and online pulp layer is mutually interspersed and bonds and to form a fiber mutually interspersed viscous
The upper abutted surface of knot, the long fibre of reticular fibre in middle net pulp layer and off line pulp layer is mutually interspersed and bonds and forms a fiber
Mutually intert the lower abutted surface of bonding, manufacture paper with pulp to obtain compound pulp layer in wet end；
9) step is squeezed after, compound pulp layer is delivered into rear press section press is dehydrated, and compound pulp layer sequentially passes through in rear press section
Some groups of spaced high pressure squeezing roller groups and low-pressure squeezing roller group, make compound pulp layer pass through several times by a loosening and a tightening
Expressing process, improved while dehydration rate is improved between online pulp layer in compound pulp layer, middle net pulp layer and off line pulp layer
Affinity and cohesive force, moisture content is reduced to less than 60%；
10) follow-up papermaking procedure, the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion, surface size press
Top sizing, rear drying cylinder portion are dried；
11) finished product, brown paper is obtained after winding.
2. the method for recovery paper mill sludge production brown paper according to claim 1, it is characterised in that：The high-temperature inactivation
In deodorization sub-step, the high-temperature region is to irradiate shape by the light of some high-power ultraviolet lamps and Infrared High-Power line lamp
Into whole high-temperature region is full of ultraviolet and infrared ray, and high-temperature region is rectangular, and the length of high-temperature region is 0.5~0.8 meter, and width omits
Less than the width of the conveyer belt.
3. the method for recovery paper mill sludge production brown paper according to claim 2, it is characterised in that：The high-temperature inactivation
In deodorization sub-step, the thickness shakeout in the sludge siccative of the conveyer belt is that 1~2cm is thick, and the conveyer belt is with 1~1.5
The speed of meter per second passes through high-temperature region at a high speed, and sludge siccative consecutive intervals is passed through 5~6 high-temperature regions, adjacent two high temperature
The distance between area is 1~2 meter.
4. the method for recovery paper mill sludge production brown paper according to claim 3, it is characterised in that：The sludge defibrination
In step, the average grain diameter for being enclosed with the molecule of mud is controlled in 0.1~0.2mm.
5. the method for recovery paper mill sludge production brown paper according to claim 4, it is characterised in that：It is described secondary with slurry
Step, the number of plies of the reticular fibre are less than 3 layers, are stained with the grid of reticular fibre and some are enclosed with the described small of mud
Particle.
6. the method for recovery paper mill sludge production brown paper according to claim 1, it is characterised in that：The wet end layering
In step of manufacturing paper with pulp, wet end is sequentially passed through first and manufacture paper with pulp pond, the first light press section, second manufactures paper with pulp pond, the second light press section, the 3rd
Manufacture paper with pulp pond and the 3rd light press section,
Wet end obtains the off line pulp layer formed by waste paper pulp in the first pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and off line pulp layer is gently pressed by first
Slightly squeezing with after mild dehydration, forms an off line pulp layer tentatively shaped, by the moisture content of off line pulp layer on wet end in squeezing portion
Control is 50~60%；
Wet end second manufacture paper with pulp pond manufacture paper with pulp shaping obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer is covered in off line slurry
The surface of layer, by the second light press section, slightly squeezing is with after mild dehydration, and on off line pulp layer surface, formation one is tentatively shaped
Middle net pulp layer, the moisture control of middle net pulp layer is 50~60%；
Wet end obtains the online pulp layer formed by waste paper pulp in the 3rd pond shaping of manufacturing paper with pulp of manufacturing paper with pulp, and surfs the Net pulp layer uniform fold in
On net pulp layer, slightly squeezed by the 3rd light press section and a tentatively sizing after mild dehydration, is formed on middle net pulp layer surface
Online pulp layer, the moisture control for pulp layer of surfing the Net is 50~60%.
7. the method for recovery paper mill sludge production brown paper according to claim 1, it is characterised in that：Squeezing step after described
In rapid, rear press section is provided with 3~5 groups of high pressure squeezing roller groups and 3~5 groups of low-pressure squeezing roller groups, two neighboring high pressure
Low-pressure squeezing roller group is provided between squeezing roller group, the Stress control of high pressure squeezing roller group is in 0.5~0.6MPa, low pressure
The Stress control for squeezing roller group is forced in 0.1~0.2MPa.
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| CN111608007A (en) * | 2020-06-03 | 2020-09-01 | 玖龙纸业（东莞）有限公司 | Papermaking process using regenerated fiber wet pulp and application thereof |
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