CN112853788A - Dry pulping system and pulping process - Google Patents
Dry pulping system and pulping process Download PDFInfo
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- CN112853788A CN112853788A CN202011627389.4A CN202011627389A CN112853788A CN 112853788 A CN112853788 A CN 112853788A CN 202011627389 A CN202011627389 A CN 202011627389A CN 112853788 A CN112853788 A CN 112853788A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
- D21B1/10—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags by cutting actions
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- 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
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Abstract
The invention provides a dry pulping system which comprises a breaking unit, a crushing unit, a material separating unit, an impurity removing unit and a packing unit, wherein the breaking unit comprises a bale breaker, a shredding machine and a fiber regenerating machine, the material separating unit comprises a material separating bin and a pulse dust collector, the impurity removing unit comprises a light impurity removing mechanism and a heavy impurity removing mechanism, the packing unit comprises a screw extruder and a packing machine, and the bale breaker, the shredding machine, the fiber regenerating machine and the packing machine are connected through a belt conveyor. The invention also provides a dry pulping process, which comprises the dry pulping system and also comprises the step (1) of scattering waste paper boards, feeding the scattered waste paper boards into a shredder, and carrying out coarse shredding to obtain a strip-shaped material with the width of 60-80mm and the length of 170-300 mm.
Description
Technical Field
The invention belongs to the technical field of waste paper treatment, and particularly relates to a dry pulping system.
Background
The waste paper is widely used as a papermaking raw material, provides an important renewable resource for the papermaking industry, can relieve the contradiction between the shortage of the papermaking raw material and the energy consumption, conforms to the sustainable development concept, and can relieve the increasingly serious environmental pollution problem. Compared with the direct use of the commercial pulp board, the cost can be effectively reduced by using the waste paper as the raw material for pulping.
At present, China is the most active economic entity in the world, a large number of commodities are circulated and sold at home and abroad, and the consumption of packing paper is large. In the past, domestic packing paper manufacturers mostly adopt imported waste paper to manufacture high-grade packing cartons. However, a large amount of impurities contained in imported waste paper enter China along with the waste paper, and become an important source of environmental pollution in China. To protect our environment, the country has made strict requirements on the content of imported waste paper as impurities. But China does not have a more ideal imported waste paper substitute product at present. The chemical-mechanical pulp has large investment and generates great chemical pollution and water pollution. The fiber strength of wheat straw pulp is not enough, and the water pollution is also great. Therefore, the problem of obtaining imported waste paper meeting the national environmental requirements is the problem of each paper mill.
Disclosure of Invention
The invention also provides a dry pulping system, which is used for solving the problems of high impurity content and environmental pollution of the imported waste paper and achieving the beneficial effects of removing impurities and avoiding environmental pollution; the service life of the equipment is prolonged by removing heavy impurities of the worn equipment, the working efficiency is improved and the energy consumption is reduced by removing light impurities, and meanwhile, the problem that the shortage of waste paper raw materials is favored in China is solved.
The invention also provides a dry pulping process, which is used for solving the problems of large water consumption and chemical pollution in the conventional waste paper pulping process and achieving the beneficial effects of reducing the water consumption and the pollution.
The invention is realized by the following technical scheme:
the utility model provides a dry process slurrying system, is including breaking up unit, broken unit, material separation unit, edulcoration unit and packing unit, the unit of breaking up include the bale breaker, broken machine and fibre regenerating machine of breaking up, the material separation unit include material separation storehouse and pulse dust collector, the edulcoration unit get rid of the mechanism and get rid of the mechanism with heavy impurity including light impurity, the packing unit include screw extruder and baling press, bale breaker, shredder, broken machine, fibre regenerating machine and baling press between connect through belt conveyor.
Further, shredder and band conveyer between be equipped with the edulcoration fan, corresponding shredder discharge gate in edulcoration fan air outlet one side.
Further, the shredder and the scattering machine are provided with a transition bin, and one side of the transition bin is connected with the belt conveyor through a screw conveyor.
Further, heavy impurity get rid of mechanism include de-ironing separator and magnetic roller, bale breaking machine and shredder between, transition feed bin and the broken machine between, be equipped with the de-ironing separator between broken machine and the fibre regenerating machine of loosing respectively, and between bale breaking machine and the shredder, between transition feed bin and the broken machine, the drive roll of the band conveyer between broken machine and the fibre regenerating machine is the magnetic roller.
Furthermore, the belt conveyors between the transition bin and the scattering machine and between the scattering machine and the fiber regenerating machine are provided with material homogenizing devices.
Furthermore, a feeding fan is arranged between the fiber regenerating machine and the material separation bin.
The dry pulping process comprises the dry pulping system and further comprises the following steps:
(1) scattering waste paperboards, sending the scattered waste paperboards into a shredder, and carrying out coarse crushing to obtain a strip-shaped material with the width of 60-80mm and the length of 170-300 mm;
(2) sending the strip-shaped material into a dispersion machine, and finely crushing to obtain an irregular material with the diameter of 40-70 mm;
(3) feeding the irregular material into a fiber regenerator, and crushing to obtain a fibrous material;
(4) after fibrous materials enter a material separation bin, dust air and the materials are separated, dust removal operation is carried out on the dust air, and prepressing operation is carried out on the materials;
(5) and conveying the pre-pressed materials into a packaging machine, and packaging into blocks.
Further, removing impurities from the scattered waste paper boards in the step (1) for the first time; and (3) carrying out secondary impurity removal on the long-strip-shaped material obtained by the treatment in the step (1) between the step (1) and the step (2) and conveying the long-strip-shaped material to a transition bin.
Further, the waste paper boards in the step (1) enter the shredder after being subjected to primary iron removal, the strip-shaped materials in the step (2) enter the scattering shredder after being subjected to secondary iron removal, and the irregular materials in the step (3) enter the fiber regenerator after being subjected to tertiary iron removal.
Further, in the step (2), the strip-shaped materials are subjected to primary material refining after secondary iron removal and enter the scattering furnace; and (4) carrying out secondary refining on the irregular material subjected to the tertiary iron removal in the step (3) and feeding the irregular material into a fiber regenerator.
The invention has the advantages that:
1. in the aspect of environmental protection, water is not needed in the whole pulping process, so that water pollution and waste are avoided; secondly, the conveying equipment is closed, so that dust pollution in the production process is avoided; thirdly, the subsequent separation of the fiber and the air adopts a precise filter bag for dust removal, thereby ensuring that the dust in the discharged air meets the requirement of environmental protection standard; and fourthly, no chemical is needed to be added in the production process, thereby avoiding chemical pollution.
2. In the aspect of investment, as the production process is optimized, the process is simple, the number of equipment is small, the traditional processes and equipment of adding water, thread rolling, screening, slurry pump conveying, concentration and filtration, heat dispersion, steam drying and the like are avoided, the occupied area is small, the waste of land resources is reduced, the project capital investment is reduced, and the human resource expenditure is reduced; the use of high energy consumption equipment such as a thread rolling machine, heat dispersion and the like is avoided, and the power consumption for preparing the fiber is low.
The equipment adopted by the invention can be suitable for horizontal and three-dimensional spatial arrangement, and can be put for production only by a flat field, thereby greatly shortening the project capital construction period and the installation period. Less investment and fast yield.
3. In the aspect of safety, thread rolling machine equipment is not needed after the process is optimized, namely, water and chemical alkali are not needed in the production process, so that potential safety hazards are eliminated, fire is prevented, the equipment power is reduced, and blocking is avoided; and steam is not needed in the production process, so that potential safety hazards are eliminated, and personal injury caused by steam is prevented.
4. Compared with the traditional dry pulping, the invention has the advantages of low capacity and high energy consumption of the traditional equipment and limits the project production capacity in the aspect of production efficiency, and the single capacity of the fiber regenerating machine is 3-6 times of the traditional equipment, so that the investment is low and the production capacity is high; the device has simple structure, convenient maintenance and cost performance far superior to that of a thread rolling machine.
The invention has simple production process and effectively reduces the failure probability of the intermediate process; the equipment is less, the workload of maintenance is reduced, and the use is more convenient; the fiber is produced quickly and the productivity is high.
5. In the aspect of use stability, the invention adopts the procedures of dust removal, iron removal, material refining and the like, so that the material meets the requirements of transportation or processing, and the stability of equipment processing is improved. According to the invention, through primary impurity removal and secondary impurity removal, light and heavy impurities in the material are reduced, and the pulping quality is ensured; the iron removing device is effectively removed through three times of upper and lower layers of iron removal, so that the iron device is prevented from causing unnecessary damage to the use of equipment, and the service life is prolonged; the materials are uniformly distributed through the primary material refining and the secondary material refining, and the processing requirements of subsequent processing equipment are met.
6. Through the system and the dry pulping process, light and heavy impurities in the imported waste paper can be sorted out, and the waste paper is made into waste paper fibers. Water, steam, chemicals and the like are not needed in the production process, and water pollution and chemical pollution are avoided. In the subsequent pulping, screening and papermaking processes of finished fibers, the production efficiency of pulping and coarse screening equipment can be improved by over 50 percent, the use of steam and chemicals in the waste paper breaking process is greatly reduced, the energy is saved, and the pollution is reduced. Meets the national environmental protection requirement and solves the problem of raw material shortage for the majority of domestic paper-making enterprises.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a dry pulping system;
FIG. 2 is a schematic structural view of a breaking unit;
FIG. 3 is a schematic view of the construction of the crushing unit;
fig. 4 is a schematic structural diagram of the material separation unit and the packing unit.
In the figure, 1, a bale breaker; 2. a shredder; 3. a scattering machine; 4. a fiber regenerating machine; 5. a material separation bin; 6. a pulse dust collector; 7. a screw extruder; 8. a baling machine; 9. a belt conveyor; 10. an impurity removal fan; 11. a transition bin; 12. a screw conveyor; 13. a de-ironing separator; 14. a magnetic roller; 15. a material homogenizing device; 16. a feeding fan.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A dry pulping system comprises a scattering unit, a crushing unit, a material separating unit, an impurity removing unit and a packing unit, wherein the scattering unit comprises a bale breaker 1, and waste paperboards packed by the bale breaker are scattered; the crushing unit include shredder 2, scattered broken machine 3 and fibre regenerating machine 4, shredder 2 carries out coarse crushing to the waste paper board, this shredder 2 has two crushing rollers, is driven by two independent motor reducer respectively to have different speeds. The design makes crushing efficiency high, can not block and die, and the ejection of compact size is even.
The material is finely crushed by the scattering machine 3, and the scattering machine 3 consists of a shell, an operation door which can be conveniently moved and opened, a scattering roller directly driven by a high-speed motor and a sieve plate. The scattering roller is provided with a plurality of blades capable of swinging freely, and can scatter and crush hard paper blocks generated during coarse crushing in high-speed operation. The large paper sheets can be broken into ideal small paper sheets through the size of the sieve holes. Therefore, the material is broken and dispersed fully, and the shape and the size are very uniform. After passing through the scattering and breaking machine 3, the particles can be uniformly distributed on the belt conveyor 9 at the bottom, so that the stable operation of subsequent equipment is facilitated, and the productivity is improved. Protecting the equipment from damage.
The fiber regenerating machine 4 makes the material become fibrous, and the fiber regenerating machine 4 comprises casing, base, operating door, rotor, sieve, baffling board, play feed bin motor etc.. The material gets into the fiber separation chamber of casing inside from the opening on casing upper portion, the rotor skin distributes a plurality of zigzag's that can freely rotate profile of tooth blade, the stock is hit by high-speed pivoted rotor in the fiber separation chamber, tear, the stock receives the baffling board that sets up in sieve and the fiber separation chamber again simultaneously and stops, the stock that is separated by the fiber and the stock that does not by the fiber separation are continuous to be redistributed, the continuous change of stock rotational speed makes qualified fibre pass through the sieve mesh fast, unqualified stock has increaseed the speed difference with the rotor, thereby obtain higher separation kinetic energy, improve fiber separation efficiency. The tooth-shaped blade can have more fiber separation working faces, and the production efficiency is greatly improved.
Set up a plurality of stationary knives crisscross with the profile of tooth blade in 4 fibre separation regions of fibre regenerating unit, on the stationary knife was fixed the casing, can play the effect that reduces the stock velocity of motion, can also form simultaneously and tear the effect with the blade, improved fibre separation efficiency.
And a feeding fan 16 is arranged between the fiber regenerating machine 4 and the material separating bin 5. The downside of fibre regenerating machine 4 is equipped with out the feed bin, and qualified fibre passes through the sieve and gets into the feed bin of bottom, and pay-off fan 16 can take the material out the fibre separation room through the separation, improves production efficiency.
The material separation unit comprises a material separation bin 5 and a pulse dust collector 6, wherein the material separation bin 5 comprises a circular cylinder, a dust removal cloth bag, an electromagnetic valve, an air compression tank, a pulse instrument, an internal separation conical cylinder, a blanking conical cylinder and the like. The material tangentially enters the circular barrel body from the feeding hole in the middle, the speed is reduced, and the material begins to settle and fall into the blanking cone barrel under the action of the inner separation cone barrel and is discharged through the outlet at the bottom.
Under the action of wind force, the dust separated from the material flows to the top. When the dust passes through the dust removal cloth bag, the dust is separated from the air and is attached to the surface of the cloth bag, and the high-pressure air in the air compression tank is released into the dust removal cloth bag through a nozzle connected with an electromagnetic valve under the control of a pulse instrument. The dust attached to the surface of the cloth bag is separated under the positive pressure of the high-pressure air and falls into the blanking cone at the bottom. The clean air is discharged to the atmosphere through an air outlet at the upper part of the cylinder body.
The impurity removing unit comprises a light impurity removing mechanism and a heavy impurity removing mechanism, the light impurities comprise plastic films and plastic bottles, and the heavy impurities comprise iron wires and wood blocks. The system is provided with an impurity sorting post behind the scattering unit, and impurities such as plastic films, plastic bottles, iron wires, wood blocks and the like contained in the waste paper boards are manually sorted out.
The packing unit include screw extruder 7 and baling press 8, bale breaking machine 1, shredder 2, broken machine 3, fibre regenerating unit 4 and baling press 8 between connect through band conveyer 9.
The light impurity removing mechanism comprises a manual sorting and impurity removing fan 10, the impurity removing fan 10 is arranged between the shredder 2 and the belt conveyor 9 adjacent to one side of the discharge port of the shredder, and the discharge port of the shredder 2 corresponds to one side of the air outlet of the impurity removing fan 10. When the paper sheet falls, light impurities such as plastic bottles, plastic films and the like in the waste paper can be blown into the discharge port through the wind power, and the impurities in the waste paper are further reduced.
In addition, the transition bin 11 can also be arranged between the breaker 3 and the fiber regenerator 4.
Heavy impurity get rid of mechanism include de-ironing separator 13 and magnetic roller 14, bale breaking machine 1 and shredder 2 between, transition feed bin 11 and the broken machine 3 between, be equipped with de-ironing separator 13 between broken machine 3 and the fibre regenerating machine 4 respectively, and bale breaking machine 1 and shredder 2 between, transition feed bin 11 and the broken machine 3 between, the belt conveyor 9's between broken machine 3 and the fibre regenerating machine 4 initiative roller is magnetic roller 14.
A hanging belt iron remover 13 is provided on the upper part of the belt conveyor 9 to remove iron on the upper layer of the waste paper board. The belt conveyor 9 has a magnetic roller 14 on the drive roller side to remove iron from the lower layer of waste cardboard. Through the magnetic separation of upper and lower two-layer, remove the ironware of variation in size, can avoid fibre regenerating machine 4 to receive ironware to damage, improve fibre regenerating machine 4's life.
And the belt conveyor 9 between the transition bin 11 and the scattering machine 3 and between the scattering machine 3 and the fiber regenerating machine 4 is provided with a material refining device 15. The material homogenizing device 15 can enable the thickness of the material on the surface of the belt to be consistent and the material to be uniformly distributed, so that the feeding amount of the subsequent equipment is stabilized, and the subsequent equipment is ensured to be always in a stable and efficient working state.
The dry pulping process comprises the dry pulping system and further comprises the following steps:
(1) scattering waste paperboards, sending the scattered waste paperboards into a shredder 2, and carrying out coarse crushing to obtain strip-shaped materials with the width of 60-80mm and the length of 170-300 mm;
(2) sending the strip-shaped material into a crusher 3 for fine crushing to obtain an irregular material with the diameter of 40-70 mm;
(3) sending the irregular material into a fiber regenerator 4, and crushing to obtain a fibrous material;
(4) and (3) separating dust air and materials after the fibrous materials enter a material separation bin 5, performing dust removal operation on the dust air, and performing prepressing operation on the materials, wherein the volume of the materials in the fourth step is reduced by one third after the materials are prepressed by a screw extruder 7.
(5) And conveying the pre-pressed materials into a packaging machine 8, and packaging into blocks.
Removing impurities from the waste paper board scattered in the step (1) for the first time, namely screening the impurities manually; and (3) carrying out secondary impurity removal on the long-strip-shaped material obtained by the treatment in the step (1) between the step (1) and the step (2), and conveying the long-strip-shaped material to a transition bin 11, wherein the secondary impurity removal is realized through an impurity removal fan 10.
The method is characterized in that the waste paper boards in the step (1) enter the shredder 2 after being subjected to primary iron removal, the long strip-shaped materials in the step (2) enter the scattering and breaking machine 3 after being subjected to secondary iron removal, and the irregular materials in the step (3) enter the fiber regenerator 4 after being subjected to tertiary iron removal.
In the step (2), the strip-shaped materials are subjected to primary refining after secondary iron removal and enter the scattering 3; and (4) performing secondary refining on the irregular materials subjected to the third deironing in the step (3) and feeding the irregular materials into a fiber regenerator 4.
The waste paper boards packed by the bale breaking machine 1 are scattered, then impurity removal is carried out once when the waste paper boards are conveyed by the belt conveyor 9, impurity separation posts are arranged on two sides of a belt, and impurities such as plastic films, plastic bottles, iron wires and wood blocks contained in the waste paper boards are manually separated.
The selected materials are subjected to primary iron removal when being transported by a belt conveyor 9, and the materials are removed by an iron remover on the upper layer of a waste paper board by a belt iron remover 13 hung on the upper part of the belt conveyor 9; the belt conveyor 9 has a magnetic roller 14 on the drive roller side to remove iron from the lower layer of waste cardboard. Through the magnetic separation of upper and lower two-layer, remove the ironware of variation in size, can avoid fibre regenerating machine 4 to receive ironware to damage, improve fibre regenerating machine 4's life.
The paper board after the primary iron removal enters a shredder 2, and the shredder 2 cuts and shreds the paper board with larger length and width into strip-shaped paper material with the approximate rectangular shape of about 60-80mm width and about 170-300mm length through the interaction of two knife rolls with different speeds.
A dust removal fan 10 is arranged between the bottom of the shredder 2 and the belt conveyor 9, and secondary impurity removal is carried out when the paper sheet falls. Light impurities such as plastic bottles, plastic films and the like in the waste paper can be blown away under the action of wind power, so that the impurities in the waste paper are further reduced.
The paper material that passes through coarse crushing falls into the band conveyer 9 of below, is sent into excessive feed bin 11 and stores, then through the screw conveyer 12 of bottom with the even stable transport of material on next band conveyer 9 to this has eliminated the influence of the fluctuation of material to subsequent equipment, when having avoided subsequent equipment to go wrong simultaneously, leads to whole line to shut down, improves work efficiency.
The materials conveyed out by the transition bin 11 are subjected to secondary iron removal when conveyed by the belt conveyor 9, and the ironers on the upper side and the lower side of the paper materials are removed through the ironer 13 and the magnetic roller 14. And the material is once homogenized when being transported by the belt conveyor 9, and the material on the surface of the belt is consistent in thickness and uniform in distribution through the cloud material device 15, so that the feeding amount of subsequent equipment is stabilized, and the subsequent equipment is ensured to be always in a stable and efficient working state.
The stock is conveyed to a disintegrator 3 and is disintegrated into smaller material, irregular material with the diameter of 40-70 mm. The irregular shape is a circle or an ellipse, etc. The paper materials scattered and broken by the scattering and breaking machine fall into the belt conveyor 9 below, three-time iron removal and secondary material refining are carried out when the belt conveyor 9 conveys the paper materials, and through three-time upper and lower magnetic separation, ironware with different sizes is removed, so that the fiber regeneration machine 4 can be prevented from being damaged by the ironware, and the service life of the fiber regeneration machine 4 is prolonged. The stock is finally fed to a fiber recycler 4 and is comminuted into fibers, which are shaped like cotton.
Qualified fibre drops to the play feed bin of fibre regenerating machine 5 bottom, and the export that goes out the feed bin is equipped with feeding fan 16, and feeding fan 16 can take the material out the fibre separation room through the separation, improves production efficiency. The feeding fan 16 draws out the material and feeds the material into the large-sized material separation bin 5. The material is discharged through an outlet at the bottom of the material separation bin 5. Under the action of wind force, dust air separated from the materials flows to the top, and air meeting the standard is discharged under the operation of the pulse dust collector 6.
For convenient transportation and storage, the material from the bottom of the material separation bin 5 enters the screw extruder 7 for prepressing, and the material is compressed into a block and the volume is compressed about 1/3 under the action of screw extrusion. The compressed fibers are fed into a baler 8 by a belt conveyor 9 and are further compacted. I.e. during the process the material changes to waste cardboard-large waste paper pieces-dispersed small paper pieces-fibres-lumps.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a dry process slurrying system, is including breaking up unit, broken unit, material separation unit, edulcoration unit and packing unit, its characterized in that: the unit of breaing up include the bale breaking machine, broken unit include shredder, broken machine and fiber regenerating machine, material separation unit include material separation storehouse and pulse dust collector, the edulcoration unit include light impurity removal mechanism and heavy impurity removal mechanism, the packing unit include screw extruder and baling press, bale breaking machine, shredder, broken machine, fiber regenerating machine and baling press between connect through belt conveyer.
2. The dry pulping system according to claim 1, wherein: the shredder and the belt conveyor are provided with an impurity removal fan, and one side of an air outlet of the impurity removal fan corresponds to a discharge port of the shredder.
3. The dry pulping system according to claim 2, wherein: the shredder and the scattering breaker are provided with a transition bin, and one side of the transition bin is connected with the belt conveyor through the screw conveyor.
4. The dry pulping system according to claim 3, wherein: the heavy impurity removal mechanism comprises an iron remover and a magnetic roller, the iron remover is respectively arranged between the bale breaking machine and the shredder, between the transition bin and the bale breaking machine and between the bale breaking machine and the fiber regenerator, and the driving roller of the belt conveyor between the bale breaking machine and the shredder, between the transition bin and the bale breaking machine and between the bale breaking machine and the fiber regenerator is the magnetic roller.
5. The dry pulping system according to claim 4, wherein: and the belt conveyors between the transition bin and the scattering machine and between the scattering machine and the fiber regenerating machine are provided with material homogenizing devices.
6. The dry pulping system according to claim 1, wherein: and a feeding fan is arranged between the fiber regenerating machine and the material separation bin.
7. A dry pulping process comprising the dry pulping system of any one of claims 1 to 6, characterized in that: the method also comprises the following steps of,
(1) scattering waste paperboards, sending the scattered waste paperboards into a shredder, and carrying out coarse crushing to obtain a strip-shaped material with the width of 60-80mm and the length of 170-300 mm;
(2) sending the strip-shaped material into a dispersion machine, and finely crushing to obtain an irregular material with the diameter of 40-70 mm;
(3) feeding the irregular material into a fiber regenerator, and crushing to obtain a fibrous material;
(4) after fibrous materials enter a material separation bin, dust air and the materials are separated, dust removal operation is carried out on the dust air, and prepressing operation is carried out on the materials;
(5) and conveying the pre-pressed materials into a packaging machine, and packaging into blocks.
8. The dry pulping system according to claim 7, wherein: carrying out primary impurity removal on the waste paper board scattered in the step (1); and (3) carrying out secondary impurity removal on the long-strip-shaped material obtained by the treatment in the step (1) between the step (1) and the step (2) and conveying the long-strip-shaped material to a transition bin.
9. The dry pulping system according to claim 8, wherein: the waste paper boards in the step (1) enter the shredder after being subjected to primary iron removal, the long strip-shaped materials in the step (2) enter the scattering and breaking machine after being subjected to secondary iron removal, and the irregular materials in the step (3) enter the fiber regenerating machine after being subjected to tertiary iron removal.
10. The dry pulping system according to claim 9, wherein: in the step (2), the long-strip-shaped materials are subjected to primary material refining after secondary iron removal and enter the scattering furnace; and (4) carrying out secondary refining on the irregular material subjected to the tertiary iron removal in the step (3) and feeding the irregular material into a fiber regenerator.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584918A (en) * | 2021-07-12 | 2021-11-02 | 东莞顺裕纸业有限公司 | Production process of waste paper reconstituted corrugated medium paper with improved bending strength |
| CN116770609A (en) * | 2023-08-01 | 2023-09-19 | 湖北华海纤维科技股份有限公司 | Broken paper treatment system and process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113584918A (en) * | 2021-07-12 | 2021-11-02 | 东莞顺裕纸业有限公司 | Production process of waste paper reconstituted corrugated medium paper with improved bending strength |
| CN116770609A (en) * | 2023-08-01 | 2023-09-19 | 湖北华海纤维科技股份有限公司 | Broken paper treatment system and process |
| CN116770609B (en) * | 2023-08-01 | 2024-03-15 | 湖北华海纤维科技股份有限公司 | Broken paper treatment system and process |
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| CN112853788B (en) | 2023-04-21 |
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