CN107604724B - The method for recycling paper mill sludge production brown paper - Google Patents
The method for recycling paper mill sludge production brown paper Download PDFInfo
- Publication number
- CN107604724B CN107604724B CN201711056015.XA CN201711056015A CN107604724B CN 107604724 B CN107604724 B CN 107604724B CN 201711056015 A CN201711056015 A CN 201711056015A CN 107604724 B CN107604724 B CN 107604724B
- Authority
- CN
- China
- Prior art keywords
- pulp
- paper
- sludge
- slurry
- pulp layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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 methods of recycling paper mill sludge production brown paper, sludge is passed through filters pressing by the present invention, high-temperature inactivation, it is primary with slurry, sludge defibrination, it is secondary with slurry, wet end layering is manufactured paper with pulp after step and rear squeezing step, it produces to obtain brown paper by subsequent papermaking procedure, new production technology not but not reduces the quality of finished product brown paper that production obtains, it is able to ascend the intensity and toughness of finished product brown paper instead, the sludge circulation that papermaking is generated uses, it and is for papermaking, sludge discharge can either be reduced and reduce paper mill to the processing pressure of sludge, it can also make its production more clean and environmental protection, reduce production cost, the sludge papermaking process of present patent application has prior meaning for paper mill.
Description
Technical field
The present invention relates to paper-making technology fields, more particularly, to the method for recycling paper mill sludge production brown paper.
Background technique
In the production process using regenerated papermaking, a large amount of sludge can be generated, in sludge in addition to impurity, microorganism, have
Machine beyond the region of objective existence also contains a large amount of long fibre and staple fiber.To the traditional treatment method of sludge, directly transport most boiler burn or
Person send to landfill area and fills.In modern production technology, more focus on environmental protection and benefit, therefore, starts to carry out sludge free of contamination
Environmental protection treatment, and secondary use sludge.Such as building brick is fabricated to after being dried, or make ingredient 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 excessively high, and transport process may pollute 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 removal mud, organic matter and impurity
Obtained proportion of fibers is very low, and generally 5~10%, and also most of is staple fiber, cannot be used directly for papermaking, especially
It can directly be leaked because diameter is less than wet end mesh in the process of manufacturing paper with pulp, rate of manufacturing paper with pulp is extremely low, and can reduce the finished product ox that production obtains
The intensity and toughness of mulberry paper, lose more than gain, therefore, more paper mills to the self-service approach of sludge would rather select burning disposal or
Person's landfill disposal.
Summary of the invention
In view of the deficienciess of the prior art, the object of the present invention is to provide the sides of recycling paper mill sludge production brown paper
Method, the invention patent sludge is for recycling papermaking, production process cleanliness without any pollution, energy conservation and environmental protection.
To achieve the goals above, the technical scheme adopted by the invention is that: recycling paper mill sludge production brown paper side
Method, comprising the following steps:
1) waste paper pulp pulping stage passes through pulper pulping using the waste paper or litter decoration of recycling, 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
The slurry concentration of slurry, waste paper pulp is controlled 4~5%；
2) leather of recycling is passed through pulper pulping by leather fiber slurry pulping stage, 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
The slurry concentration of material, leather fiber slurry is controlled 8~10%；
3) weight percent is natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex 10 by lotion preparation steps
~20% and petroleum ether surplus be stirred, so that natural boiled wood oil, gelatin and Heveatex is dissolved in petroleum ether and form lotion；
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
It is quantitatively pumped into liquid dehydration mould release in conveyance conduit leading portion, the investment speed that liquid is dehydrated mould release is 200~300 Grams Per Minutes
Clock uniformly sprays wine calcium carbonate powder in the pond face of sedimentation basin, then the natural sedimentation for passing through it 0.5~1 hour, in sedimentation basin
Middle formation supernatant layer and lower sludge blanket,
Wherein, liquid dehydration mould release include following weight percent component, non-ionic polyacrylamide 40~
50%, aluminium polychloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus, pass through liquid
Dehydration mould release makes sludge preliminary hydro-extraction and deodorization, and by organic matter in fosthiazate inhibition sludge, microorganism and kills it
In mushroom；
4.2) supernatant layer is first pumped to wastewater treatment center and handled by filters pressing sub-step, 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 filters pressing, obtains soft form
Sludge siccative, the moisture content of sludge siccative are 50~60%；
4.3) high-temperature inactivation and deodorization sub-step transport sludge siccative by conveyer belt and pass through straight-through high-temperature continuous tunnel furnace,
Make that interval is mounted on several ultraviolet radiator on the top of high temperature tunnel furnace and several infrared lamps towards conveyer belt and are formed one high
Warm area, the temperature of high-temperature region are 900~950 DEG C,
Make to shakeout and high-temperature region is passed through with the speed high speed of 0.5~2.5 meter per second in the sludge siccative of conveyer belt, and makes sludge
Siccative continues through 3~10 high-temperature regions, under 900~950 DEG C of instantaneous high-temperature environment, active material in sludge siccative
The enhancing of active moment, mixes and the fosthiazate that has been dispersed in sludge siccative then makes the enzyme in active material in sludge siccative fast
Speed is decomposed and dead, and the DNA structure of ultraviolet radiator then rapid damage active material, and active material includes organic matter, microorganism
And mushroom, 900~950 DEG C of instantaneous high-temperature keep sludge dry while destroying and killing the active material on sludge siccative upper layer
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 extracts exhaust gas by the exhausting system of straight-through high-temperature continuous tunnel furnace two sides, send to waste gas station processing,
Obtain the hygienic sludge siccative that moisture content is 40~50%；
5) primary step with slurry, leather fiber slurry and hygienic sludge siccative are conveyed simultaneously by the weight ratio of 1:5~6
It to mixing plant, stirs evenly, lotion, lotion and sterile dirt is quantitatively continuously conveyed to mixing plant by metering pump in whipping process
The weight ratio of mud siccative is 1:50~60, and whipping process makes staple fiber and long fibre in hygienic sludge siccative be dispersed to leather
Between the animal origin of fibre stuff, emulsion dispersion and the surface for being attached to staple fiber, long fibre and animal origin obtain sludge
Centrotheca；
6) sludge centrotheca is delivered to paste mill grinding by sludge refining step, and the grinding flute profile of fiberizer selects broom fin,
Defibrination process makes staple fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with lotion, newborn after defibrination
Liquid makes staple fiber and long fibre is bonded in animal origin respectively, and free lotion forms internal small for being enclosed with mud
Grain, obtains the sludge slurry with composite fibre, and the slurry concentration of sludge slurry is controlled 10~15%；
7) waste paper pulp, leather fiber slurry and sludge slurry are pumped to respectively with slurry bucket, waste paper by secondary step with slurry
The weight ratio of slurry, leather fiber slurry and sludge slurry is 1:0.1~0.2:0.2~0.3, is stirring 10~15 points with slurry bucket
Clock, and the temperature with slurry bucket is controlled at 60~70 DEG C, by constant displacement pump continuously slowly to in slurry bucket during with slurry
Natural ox glue is put into, the investment speed of natural ox glue is 5 Grams Per Seconds, while promoting fibre pick density, and make waste paper pulp
The composite fibre of fiber, the animal origin in leather fiber slurry and sludge slurry mutually bonds respectively and interweaves and reticulate fibre
Dimension forms mixed slurry；
8) wet end is layered step of manufacturing paper with pulp, and three ponds of manufacturing paper with pulp are arranged in wet end, waste paper pulp is pumped to first respectively and is manufactured paper with pulp
Pond and third are manufactured paper with pulp pond, and mixed slurry is pumped to second and is manufactured paper with pulp pond, make wet end sequentially pass through first manufacture paper with pulp pond, second manufacture paper with pulp pond
It manufactures paper with pulp pond with third, wet end obtains the off line pulp layer formed by waste paper pulp in the first pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and wet end is second
Manufacture paper with pulp pond manufacture paper with pulp molding 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 third pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and online pulp layer uniform fold is in middle net pulp layer
On, the long fibre of reticular fibre and online pulp layer in middle net pulp layer mutually interts and bonds and form a fiber and mutually intert
The upper abutted surface of bonding, the long fibre of reticular fibre and off line pulp layer in middle net pulp layer is mutually interspersed and bonds and to form one fine
The lower abutted surface of the mutually interspersed bonding of dimension, manufactures paper with pulp to obtain compound pulp layer in wet end；
9) squeeze step after, compound pulp layer be delivered to rear press section press and is dehydrated, compound pulp layer rear press section sequentially
Roller group is squeezed by the spaced high pressure of several groups and low-pressure squeezes roller group, and the pressure control that high pressure squeezes roller group exists
0.5~0.6MPa, low-pressure squeeze the pressure control of roller group in 0.1~0.2MPa, make compound pulp layer by several times one pine
One tight expressing process improves online pulp layer, middle net pulp layer and off line pulp layer in compound pulp layer while improving dehydration rate
Between affinity and cohesive force, moisture content is reduced to 60% or less；
10) the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion by subsequent papermaking procedure, surface is applied
Glue machine top sizing, rear drying cylinder portion are dry；
11) finished product obtains brown paper after winding.
In further technical solution, in the high-temperature inactivation and deodorization sub-step, the high-temperature region is by several big
The light of power UV line lamp and Infrared High-Power line lamp irradiates to be formed, and entire high-temperature region is full of ultraviolet and infrared ray, high temperature
Area is in rectangle, and the length of high-temperature region is 0.5~0.8 meter, and width is less than the width of the conveyer belt；
In further technical solution, in the high-temperature inactivation and deodorization sub-step, the sludge in the conveyer belt is shakeout
Siccative with a thickness of 1~2cm thickness, the conveyer belt passes through high-temperature region with the speed of 1~1.5 meter per second high speed, and makes sludge siccative
For consecutive intervals by 5~6 high-temperature regions, the distance between two adjacent high-temperature regions are 1~2 meter.
In further technical solution, in the sludge refining step, it is enclosed with being averaged for the molecule of mud
Size controlling is in 0.1~0.2mm.
In further technical solution, the secondary step with slurry, the number of plies of the reticular fibre is less than 3 layers, netted fibre
Several molecules for being enclosed with mud are stained in the grid of dimension.
In further technical solution, the wet end layering is manufactured paper with pulp in step, so that wet end is sequentially passed through first and is manufactured paper with pulp pond, the
One light press section, the second manufacture paper with pulp pond, the second light press section, third are manufactured paper with pulp pond and the light press section of third,
Wet end obtains the off line pulp layer formed by waste paper pulp in the first pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and off line pulp layer is by first
Light press section is slightly squeezed with after mild dehydration, an off line pulp layer being tentatively formed is formed on wet end, by containing for off line pulp layer
Water rate is controlled 50~60%；
Wet end second manufacture paper with pulp pond manufacture paper with pulp molding obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer is covered in down
The surface of net pulp layer slightly squeezes with after mild dehydration by the second light press section, it is tentatively fixed to form one on off line pulp layer surface
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 third pond molding of manufacturing paper with pulp of manufacturing paper with pulp, online pulp layer uniform fold
On middle net pulp layer, slightly squeezes by the light press section of third with after mild dehydration, it is preliminary to form one on middle net pulp layer surface
The online pulp layer of sizing, the moisture control for pulp layer of surfing the Internet is 50~60%.
In further technical solution, squeezed in step after described, 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.
After adopting the above technical scheme, the invention has the following advantages that
First, the sludge that papermaking generates is used to produce brown paper by the present invention, and paper mill sludge is recycled, and makes its production more
Add cleaning, production process is pollution-free, is more energy-saving and environmentally friendly, and using sludge as the middle layer of brown paper, and makes the fibre between each layer
Dimension is mutually interspersed and interweaves, and new production technology not but not reduces the quality of the finished product brown paper that production obtains, instead can
Promote 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.
Third, the present invention effectively solve the sludge handling problem in paper mill, reduce sludge discharge, reduce environmental purification and set
Standby operating pressure and operating cost, in terms of the recycling of sludge, productivity effect and comprehensive benefit are above and directly burn
Burn, with good application prospect, therefore the sludge papermaking process of present patent application for paper mill have it is more important
Meaning.
Specific 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 recycling paper mill sludge production brown paper, comprising the following steps:
1) waste paper pulp pulping stage passes through pulper pulping using the waste paper or litter decoration of recycling, 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
The slurry concentration of slurry, waste paper pulp is controlled 4~5%；
2) leather of recycling is passed through pulper pulping by leather fiber slurry pulping stage, 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
The slurry concentration of material, leather fiber slurry is controlled 8~10%；
3) weight percent is natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex 10 by lotion preparation steps
~20% and petroleum ether surplus be stirred, so that natural boiled wood oil, gelatin and Heveatex is dissolved in petroleum ether and form lotion；
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
It is quantitatively pumped into liquid dehydration mould release in conveyance conduit leading portion, the investment speed that liquid is dehydrated mould release is 200~300 Grams Per Minutes
Clock uniformly sprays wine calcium carbonate powder in the pond face of sedimentation basin, then the natural sedimentation for passing through it 0.5~1 hour, in sedimentation basin
Middle formation supernatant layer and lower sludge blanket,
Wherein, liquid dehydration mould release include following weight percent component, non-ionic polyacrylamide 40~
50%, aluminium polychloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus, pass through liquid
Dehydration mould release makes sludge preliminary hydro-extraction and deodorization, and by organic matter in fosthiazate inhibition sludge, microorganism and kills it
In mushroom；
4.2) supernatant layer is first pumped to wastewater treatment center and handled by filters pressing sub-step, 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 filters pressing, obtains soft form
Sludge siccative, the moisture content of sludge siccative are 50~60%；
4.3) high-temperature inactivation and deodorization sub-step transport sludge siccative by conveyer belt and pass through straight-through high-temperature continuous tunnel furnace,
Make that interval is mounted on several ultraviolet radiator on the top of high temperature tunnel furnace and several infrared lamps towards conveyer belt and are formed one high
Warm area, the temperature of high-temperature region are 900~950 DEG C,
Make to shakeout and high-temperature region is passed through with the speed high speed of 0.5~2.5 meter per second in the sludge siccative of conveyer belt, and makes sludge
Siccative continues through 3~10 high-temperature regions, under 900~950 DEG C of instantaneous high-temperature environment, active material in sludge siccative
The enhancing of active moment, mixes and the fosthiazate that has been dispersed in sludge siccative then makes the enzyme in active material in sludge siccative fast
Speed is decomposed and dead, and the DNA structure of ultraviolet radiator then rapid damage active material, and active material includes organic matter, microorganism
And mushroom, 900~950 DEG C of instantaneous high-temperature keep sludge dry while destroying and killing the active material on sludge siccative upper layer
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 extracts exhaust gas by the exhausting system of straight-through high-temperature continuous tunnel furnace two sides, send to waste gas station processing,
Obtain the hygienic sludge siccative that moisture content is 40~50%；
5) primary step with slurry, leather fiber slurry and hygienic sludge siccative are conveyed simultaneously by the weight ratio of 1:5~6
It to mixing plant, stirs evenly, lotion, lotion and sterile dirt is quantitatively continuously conveyed to mixing plant by metering pump in whipping process
The weight ratio of mud siccative is 1:50~60, and whipping process makes staple fiber and long fibre in hygienic sludge siccative be dispersed to leather
Between the animal origin of fibre stuff, emulsion dispersion and the surface for being attached to staple fiber, long fibre and animal origin obtain sludge
Centrotheca；
6) sludge centrotheca is delivered to paste mill grinding by sludge refining step, and the grinding flute profile of fiberizer selects broom fin,
Defibrination process makes staple fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with lotion, newborn after defibrination
Liquid makes staple fiber and long fibre is bonded in animal origin respectively, and free lotion forms internal small for being enclosed with mud
Grain, obtains the sludge slurry with composite fibre, and the slurry concentration of sludge slurry is controlled 10~15%；
7) waste paper pulp, leather fiber slurry and sludge slurry are pumped to respectively with slurry bucket, waste paper by secondary step with slurry
The weight ratio of slurry, leather fiber slurry and sludge slurry is 1:0.1~0.2:0.2~0.3, is stirring 10~15 points with slurry bucket
Clock, and the temperature with slurry bucket is controlled at 60~70 DEG C, by constant displacement pump continuously slowly to in slurry bucket during with slurry
Natural ox glue is put into, the investment speed of natural ox glue is 5 Grams Per Seconds, while promoting fibre pick density, and make waste paper pulp
The composite fibre of fiber, the animal origin in leather fiber slurry and sludge slurry mutually bonds respectively and interweaves and reticulate fibre
Dimension forms mixed slurry；
8) wet end is layered step of manufacturing paper with pulp, and three ponds of manufacturing paper with pulp are arranged in wet end, waste paper pulp is pumped to first respectively and is manufactured paper with pulp
Pond and third are manufactured paper with pulp pond, and mixed slurry is pumped to second and is manufactured paper with pulp pond, make wet end sequentially pass through first manufacture paper with pulp pond, second manufacture paper with pulp pond
It manufactures paper with pulp pond with third, wet end obtains the off line pulp layer formed by waste paper pulp in the first pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and wet end is second
Manufacture paper with pulp pond manufacture paper with pulp molding 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 third pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and online pulp layer uniform fold is in middle net pulp layer
On, the long fibre of reticular fibre and online pulp layer in middle net pulp layer mutually interts and bonds and form a fiber and mutually intert
The upper abutted surface of bonding, the long fibre of reticular fibre and off line pulp layer in middle net pulp layer is mutually interspersed and bonds and to form one fine
The lower abutted surface of the mutually interspersed bonding of dimension, manufactures paper with pulp to obtain compound pulp layer in wet end；
9) squeeze step after, compound pulp layer be delivered to rear press section press and is dehydrated, compound pulp layer rear press section sequentially
Roller group is squeezed by the spaced high pressure of several groups and low-pressure squeezes roller group, makes compound pulp layer by several times one pine
One tight expressing process improves online pulp layer, middle net pulp layer and off line pulp layer in compound pulp layer while improving dehydration rate
Between affinity and cohesive force, moisture content is reduced to 60% or less；
10) the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion by subsequent papermaking procedure, surface is applied
Glue machine top sizing, rear drying cylinder portion are dry；
11) finished product obtains brown paper after winding.
Embodiment two
Recycle the method that paper mill sludge produces brown paper, the technique in the key step of the present embodiment and corresponding processing step
Parameter is identical as implementing one, and something in common is not repeating, the difference is that, comprising the following steps:
1) waste paper pulp pulping stage.
2) leather fiber slurry pulping stage.
3) lotion preparation steps.
4) paper mill sludge pre-treatment step.
4.1) sub-step is precipitated；
4.2) filters pressing sub-step,
4.3) high-temperature inactivation and deodorization sub-step, high-temperature region are by several high-power ultraviolet lamps and Infrared High-Power line
The light of lamp irradiates to be formed, and entire high-temperature region is full of ultraviolet and infrared ray, and high-temperature region is in rectangle, and the length of high-temperature region is 0.5
~0.8 meter, width is slightly less than the width of the conveyer belt,
Shakeout the conveyer belt sludge siccative with a thickness of 1~2cm thickness, the conveyer belt is with 1~1.5 meter per second
Speed high speed passes through high-temperature region, and makes sludge siccative consecutive intervals by 5~6 high-temperature regions, between two adjacent high-temperature regions
Distance be 1~2 meter.
5) primary 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 stained with several be enclosed in the grid of reticular fibre less than 3 layers
The molecule of mud.
8) wet end layering is manufactured paper with pulp step, so that 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, third are manufactured paper with pulp pond and the light press section of third,
Wet end obtains the off line pulp layer formed by waste paper pulp in the first pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and off line pulp layer is by first
Light press section is slightly squeezed with after mild dehydration, an off line pulp layer being tentatively formed is formed on wet end, by containing for off line pulp layer
Water rate is controlled 50~60%；
Wet end second manufacture paper with pulp pond manufacture paper with pulp molding obtain the middle net pulp layer formed by mixed slurry, middle net pulp layer is covered in down
The surface of net pulp layer slightly squeezes with after mild dehydration by the second light press section, it is tentatively fixed to form one on off line pulp layer surface
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 third pond molding of manufacturing paper with pulp of manufacturing paper with pulp, online pulp layer uniform fold
On middle net pulp layer, slightly squeezes by the light press section of third with after mild dehydration, it is preliminary to form one on middle net pulp layer surface
The online pulp layer of sizing, the moisture control for pulp layer of surfing the Internet 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 squeeze and are provided with low-pressure squeezing roller group between roller group, and high pressure squeezes the pressure control of roller group
In 0.5~0.6MPa, the pressure that low-pressure squeezes roller group is controlled in 0.1~0.2MPa.Make compound pulp layer by several times one
A loose tight expressing process makes 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, increases the mutually interspersed depth of the fiber of online pulp layer, middle net pulp layer and off line pulp layer, be formed simultaneously breathing
Effect, is released effectively internal stress, reduces rebound, and online pulp layer in compound pulp layer, middle net are improved while improving dehydration rate
Affinity and cohesive force between pulp layer and off line pulp layer promote the intensity and toughness of finished product brown paper.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (7)
1. the method for recycling paper mill sludge production brown paper, which comprises the following steps:
1) waste paper pulp pulping stage passes through pulper pulping using the waste paper or litter decoration of recycling, then removes 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, by the leather of recycling pass through 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) lotion preparation steps, by weight percent be natural boiled wood oil 5~10%, gelatin 6~8%, Heveatex 10~
20% and petroleum ether surplus be stirred, so that natural boiled wood oil, gelatin and Heveatex is dissolved in petroleum ether and form lotion；
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 investment speed that liquid is dehydrated 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 passing through it 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 weight percent, nonionic polyacrylamide
Amine 40~50%, aluminium polychloride 20~30%, Potassium aluminum sulfate dodecahydrate 5~10% and fosthiazate 5~10% and water surplus lead to
Crossing liquid dehydration mould release makes sludge preliminary hydro-extraction and deodorization, and simultaneously by organic matter in fosthiazate inhibition sludge, microorganism
Kill mushroom therein；
4.2) supernatant layer is first pumped to wastewater treatment center and handled, then lower sludge blanket is sequentially pumped by filters pressing sub-step
It send to thick filter press and pressure-sizing filter, removes large granular impurity and bulky grain clod by filters pressing, obtain the sludge of soft form
Siccative, the moisture content of sludge siccative are 50~60%；
4.3) high-temperature inactivation and deodorization sub-step transport sludge siccative by straight-through high-temperature continuous tunnel furnace, between making by conveyer belt
Towards conveyer belt and a high-temperature region is formed every several ultraviolet radiator on the top for being mounted on high temperature tunnel furnace and several infrared lamps,
The temperature of high-temperature region is 900~950 DEG C, makes to shakeout and be worn in the sludge siccative of conveyer belt with the speed high speed of 0.5~2.5 meter per second
High-temperature region is crossed, and sludge siccative is made to continue through 3~10 high-temperature regions, under 900~950 DEG C of instantaneous high-temperature environment, sludge
The active moment of active material in siccative enhances, and mixes and the fosthiazate being dispersed in sludge siccative then makes in sludge siccative
Active material in enzyme fast decoupled and dead, and the DNA structure of ultraviolet radiator then rapid damage active material, active material
Including organic matter, microorganism and mushroom, 900~950 DEG C of instantaneous high-temperature is in the active matter for destroying and killing sludge siccative upper layer
While matter, make the moisture content in sludge siccative, stink and paper-making process addition and remains in chemicals in sludge and quickly wave
It issues, and the fiber ignition in sludge siccative will not be made, extracted by the exhausting system of straight-through high-temperature continuous tunnel furnace two sides useless
Gas is sent to waste gas station processing, obtains the hygienic sludge siccative that moisture content is 40~50%；
5) leather fiber slurry and hygienic sludge siccative are delivered to simultaneously by the weight ratio of 1:5~6 and are stirred by primary step with slurry
Station is mixed, is stirred evenly, lotion is quantitatively continuously conveyed to mixing plant by metering pump in whipping process, lotion and hygienic sludge are dry
The weight ratio of material is 1:50~60, and whipping process makes staple fiber and long fibre in hygienic sludge siccative be dispersed to leather fiber
Between the animal origin of slurry, emulsion dispersion and the surface for being attached to staple fiber, long fibre and animal origin, at the beginning of obtaining sludge
Slurry；
6) sludge centrotheca is delivered to paste mill grinding by sludge refining step, and the grinding flute profile of fiberizer selects broom fin, defibrination
Process makes staple fiber, long fibre and animal origin surface fluff rapidly, and hair side is attached with lotion, after defibrination lotion make
Staple fiber and long fibre are bonded in animal origin respectively, and free lotion forms the internal molecule for being enclosed with mud, obtains
Slurry concentration to the sludge slurry with composite fibre, sludge slurry is controlled 10~15%；
7) waste paper pulp, leather fiber slurry and sludge slurry are pumped to respectively with slurry bucket, secondary stock by secondary step with slurry
The weight ratio of material, leather fiber slurry and sludge slurry is 1:0.1~0.2:0.2~0.3, is stirring 10~15 points with slurry bucket
Clock, and the temperature with slurry bucket is controlled at 60~70 DEG C, by constant displacement pump continuously slowly to in slurry bucket during with slurry
Natural ox glue is put into, the investment speed of natural ox glue is 5 Grams Per Seconds, while promoting fibre pick density, and make the fibre of waste paper pulp
The composite fibre of dimension, the animal origin in leather fiber slurry and sludge slurry mutually bonds respectively and is woven into reticular fibre,
Form mixed slurry；
8) wet end layering is manufactured paper with pulp step, and three ponds of manufacturing paper with pulp are arranged in wet end, waste paper pulp is pumped to respectively first manufacture paper with pulp pond and
Third is manufactured paper with pulp pond, and mixed slurry is pumped to second and is manufactured 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 molding 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 form, 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
Third pond molding of manufacturing paper with pulp of manufacturing paper with pulp obtains the online pulp layer formed by waste paper pulp, surf the Internet 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 and off line pulp layer in middle net pulp layer is mutually interspersed and bonds and forms a fiber
The lower abutted surface of mutually interspersed bonding, manufactures paper with pulp to obtain compound pulp layer in wet end；
9) step is squeezed after, and compound pulp layer is delivered to rear press section press and is dehydrated, compound pulp layer is sequentially passed through in rear press section
The spaced high pressure squeezing roller group of several groups and low-pressure squeeze roller group, and the pressure that high pressure squeezes roller group is controlled 0.5
~0.6MPa, low-pressure squeeze the pressure control of roller group in 0.1~0.2MPa, are passing through compound pulp layer several times by a loosening and a tightening
Expressing process, improved while improving dehydration rate between online pulp layer, middle net pulp layer and the off line pulp layer in compound pulp layer
Affinity and cohesive force, moisture content is reduced to 60% or less；
10) the compound pulp layer Jing Guo press section press is sequentially delivered to the drying of drying cylinder portion, surface size press by subsequent papermaking procedure
Top sizing, rear drying cylinder portion are dry；
11) finished product obtains brown paper after winding.
2. the method for recycling 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 several high-power ultraviolet lamps and Infrared High-Power line lamp
At entire high-temperature region is full of ultraviolet and infrared ray, and high-temperature region is in rectangle, and the length of high-temperature region is 0.5~0.8 meter, and width is small
In the width of the conveyer belt.
3. the method for recycling paper mill sludge production brown paper according to claim 2, it is characterised in that: the high-temperature inactivation
In deodorization sub-step, shakeout the conveyer belt sludge siccative with a thickness of 1~2cm thickness, the conveyer belt is with 1~1.5
The speed high speed of meter per second passes through high-temperature region, and sludge siccative consecutive intervals is made to pass through 5~6 high-temperature regions, two adjacent high temperature
The distance between area is 1~2 meter.
4. the method for recycling 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 recycling paper mill sludge production brown paper according to claim 4, it is characterised in that: described secondary with slurry
Step, the number of plies of the reticular fibre are stained in the grid of reticular fibre less than 3 layers and several are enclosed with the described small of mud
Particle.
6. the method for recycling 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, so that 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, third
It manufactures paper with pulp pond and the light press section of third, wet end obtains the off line pulp layer formed by waste paper pulp in the first pond molding of manufacturing paper with pulp of manufacturing paper with pulp, under
Net pulp layer is slightly squeezed by the first light press section with after mild dehydration, and an off line pulp layer being tentatively formed is formed on wet end,
By the moisture control of off line pulp layer 50~60%；Wet end manufactures paper with pulp what molding obtained being formed by mixed slurry in the second pond of manufacturing paper with pulp
Middle net pulp layer, middle net pulp layer are covered in the surface of off line pulp layer, by the second light press section slightly squeeze and mild dehydration after,
Off line pulp layer surface forms a middle net pulp layer being tentatively formed, and the moisture control of middle net pulp layer is 50~60%；
Wet end obtains the online pulp layer formed by waste paper pulp in third pond molding of manufacturing paper with pulp of manufacturing paper with pulp, and online pulp layer uniform fold is in
On net pulp layer, slightly squeezes by the light press section of third with after mild dehydration, form a tentatively sizing on middle net pulp layer surface
Online pulp layer, the moisture control for pulp layer of surfing the Internet is 50~60%.
7. the method for recycling 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056015.XA CN107604724B (en) | 2017-11-01 | 2017-11-01 | The method for recycling paper mill sludge production brown paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056015.XA CN107604724B (en) | 2017-11-01 | 2017-11-01 | The method for recycling paper mill sludge production brown paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107604724A CN107604724A (en) | 2018-01-19 |
| CN107604724B true CN107604724B (en) | 2019-01-25 |
Family
ID=61084959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711056015.XA Active CN107604724B (en) | 2017-11-01 | 2017-11-01 | The method for recycling paper mill sludge production brown paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107604724B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570884B (en) * | 2018-04-02 | 2019-05-07 | 东莞市泰昌纸业有限公司 | A method of heavy wrapping craft paper is reproduced using paper mill sludge |
| CN108729281A (en) * | 2018-04-26 | 2018-11-02 | 东莞市泰昌纸业有限公司 | A method of utilizing paper mill sludge pyrolysis recycle corrugated paper |
| CN109518505B (en) * | 2018-12-17 | 2020-08-18 | 东莞顺裕纸业有限公司 | Corrugated medium paper production method for improving fiber utilization rate by using waste paper for pulping |
| 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 |
| CN112796147B (en) * | 2020-12-25 | 2022-11-25 | 东莞顺裕纸业有限公司 | Clean production method of corrugated medium paper with zero sludge discharge in pulping process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649573A (en) * | 2009-08-27 | 2010-02-17 | 福建省晋江优兰发纸业有限公司 | Leatheroid manufactured by papermaking sewage and cotton fibre and method thereof |
| CN103088695A (en) * | 2012-12-17 | 2013-05-08 | 华南理工大学 | Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper |
| CN103103866A (en) * | 2013-01-25 | 2013-05-15 | 华南农业大学 | Method for blending corrugating base paper by utilizing secondary fiber after anaerobic digestion of paper mill sludge |
| CN105155340A (en) * | 2015-09-06 | 2015-12-16 | 陕西科技大学 | Method for using wastewater sludge as papermaking auxiliary material |
| CN106256953B (en) * | 2016-07-15 | 2017-09-29 | 东莞顺裕纸业有限公司 | A kind of leather waste matches somebody with somebody the method that OCC waste paper produces high-strength corrugating medium of copying |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4255159B2 (en) * | 1999-03-15 | 2009-04-15 | 日本製紙株式会社 | How to deink waste paper |
-
2017
- 2017-11-01 CN CN201711056015.XA patent/CN107604724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649573A (en) * | 2009-08-27 | 2010-02-17 | 福建省晋江优兰发纸业有限公司 | Leatheroid manufactured by papermaking sewage and cotton fibre and method thereof |
| CN103088695A (en) * | 2012-12-17 | 2013-05-08 | 华南理工大学 | Device and method for producing cardboard paper by utilizing paper mill sludge and waste paper |
| CN103103866A (en) * | 2013-01-25 | 2013-05-15 | 华南农业大学 | Method for blending corrugating base paper by utilizing secondary fiber after anaerobic digestion of paper mill sludge |
| CN105155340A (en) * | 2015-09-06 | 2015-12-16 | 陕西科技大学 | Method for using wastewater sludge as papermaking auxiliary material |
| CN106256953B (en) * | 2016-07-15 | 2017-09-29 | 东莞顺裕纸业有限公司 | A kind of leather waste matches somebody with somebody the method that OCC waste paper produces high-strength corrugating medium of copying |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107604724A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107604724B (en) | The method for recycling paper mill sludge production brown paper | |
| CN104278594B (en) | A kind of cop tube paper production technology | |
| CN106283824B (en) | A kind of high weight high-strength fluting medium process for cleanly preparing | |
| CN106256953B (en) | A kind of leather waste matches somebody with somebody the method that OCC waste paper produces high-strength corrugating medium of copying | |
| CN1786340A (en) | Corrugated paper produced by steam blasting straw to pulp and its production method | |
| CN106256952B (en) | The method for producing environmental friendly regenerated bobbin body paper using corrugating medium's paper mill sludge and slurry | |
| CN108729281A (en) | A method of utilizing paper mill sludge pyrolysis recycle corrugated paper | |
| CN107268327A (en) | A kind of natural color pulp and its preparation technology, using and preparation facilities | |
| CN107366176A (en) | A kind of high efficiente callback sizing process of high-grade kraft liner cardboard paper | |
| CN102002892A (en) | Production process of low-quantitative straw wrapping paper | |
| CN101649573A (en) | Leatheroid manufactured by papermaking sewage and cotton fibre and method thereof | |
| CN109537350A (en) | A kind of production technology using waste paper production high-strength corrugated paper | |
| CN109518505A (en) | A kind of corrugating medium's production method of the raising fiber utilization rate using waste paper pulp-making | |
| CN107601813B (en) | The method that mixing paper making pulp is made using paper mill sludge and waste paper pulp | |
| CN107630380B (en) | The method for recycling paper mill sludge production high-strength cow paper | |
| CN103172318B (en) | Antibacterial partition board | |
| CN111996830A (en) | Production process of fiber composite material household paper | |
| CN106868915A (en) | A kind of preparation method of tissue | |
| CN102108647B (en) | Process for producing paper pulp, compressed paperboard prepared with paper pulp and application of paperboard | |
| CN109811570A (en) | A kind of technique that paper grade pulp is made as raw material activity legal system using fresh bamboo | |
| CN109537352A (en) | The catalyst and technique for applying that ZYX preimpregnation catalysis plant fiber is slurried | |
| CN108330728A (en) | A method of manufacturing fire-proof plate using stalk and flyash | |
| CN107905026A (en) | Match somebody with somebody the method copied waste paper pulp and produce high-strength corrugating medium using leftover bits and pieces saw foam | |
| CN104099798A (en) | Production process for white paper board | |
| CN103469697A (en) | Production method of paper sludge paperboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |