KR20100068602A - The continues separating apparatus and method of old corrugated containerboard to long fiber and short fiber by the special horizen pulper - Google Patents

Abstract

PURPOSE: A method for consecutively separating waste corrugated cardboard into staple fiber and filament and an apparatus thereof are provided to increase a recovery rate of the filament, and to collect the filament of high intensity while reducing electrical energy and facility costs. CONSTITUTION: A method for consecutively separating waste corrugated cardboard into staple fiber and filament includes the following steps: dissociating a corrugating medium by rotating pulper body at a constant speed while putting water and waste corrugated cardboard into a raw water inlet(1); consecutively discharging the dissociating corrugating medium to the outside; washing the pulper contents including liner paper pieces; consecutively discharging cleaning water to the outside; dissociating the washed liner pieces; discharging the dissociated liner paper; and discharging the dundissociated foreign materials to the outside.

Description

The continuously separating apparatus and method of old corrugated containerboard to long fiber and short fiber by the special horizen pulper}

The present invention relates to an apparatus and method for separating waste cardboard into liner made of linage and short fibers containing a large amount of long fibers. Corrugated cardboard is made by combining short core fiber corrugated fabric and long fiber liner paper. Generally, liner paper is wetted by adding rosin or a similar material to the manufacturing process, and thus retains moisture resistance to water, so that it does not dissolve or dissolve well in water. However, since the corrugated medium is not wet-treated, when the corrugated cardboard is put into water and subjected to a physical impact, the corrugated core dissociates first, and the lineage dissociates later than the corrugated core. In the present invention, using this property of the waste cardboard to implement a technique for separating the cardboard into short fibers and long fibers more efficiently.

The present invention improves the apparatus and method for recovering the liner paper of the waste cardboard (the Korean stimulation patent registration No. 10-0735656) and the already applied patent application (Application No. 10-2008-0118498) I realized the technology, but I made up for the shortcomings of the existing technologies.

First, since the liner is continuously impacted by the impeller wing that rotates strongly at the bottom of the pulper, part of the liner dissociates with the core and discharges with the core core material, resulting in a decrease in the recovery rate of long fibers.

Second, the vertical pulper consumes more electrical energy than the horizontal pulper because the impeller rotates at high speed in a fluid-resistant white water.

Fourth, when dissociating a piece of liner paper separated from waste cardboard into a sharp impeller that rotates at high speed, the fine side branches of the fibers may fall off in the case of long-hauled fibers. Even fibers can dissociate Lineage while protecting fine side branches.

Fifth, the impeller, which rotates at a high speed, finely fragments some of the miscellaneous materials including adhesive foreign matter and cannot be filtered out on various screens. As a result, these foreign materials are included in the raw material, thereby degrading the quality of the final product.

Sixth apparatus and method for recovering the liner paper of the waste corrugated cardboard, which has already been registered for the invention , in a continuous process (Korean National Patent Registration No. 10-0735656), and the method of patent application (Application No. 10-2008-0118498) and Alternatively, as indicated in [FIG. 2], cardboard shredding and separation (separating corrugated paper into liner pieces and corrugated pieces) and fragmented corrugated core dissociation, fragmented lineage washing, washed lineage piece dissociation, undissociated foreign material discharge All of these processes were implemented continuously and collectively in one horizontal pulp.

It solves the problems of the device and method for recovering the liner paper of the existing invention patented waste cardboard in a continuous process (Korean National Patent Registration No. 10-0735656) and the already applied patent application method (Application No. 10-2008-0118498) At the same time, implementing the technology using multiple facilities (2 pulpers, rotating screens) through a single facility (1 pulper) reduces manpower, electrical energy, and facility investment costs. To achieve the effect of reducing the area of equipment

In the present invention solved the problem by using a horizontal pulper to rotate the body itself without impeller. Techniques implemented in the present invention are first in the horizontal pulper of Figure 3 is first separated between the lineage piece and corrugated cardboard first, then when recovering the lineage piece inevitably stuck between the lineage piece surface and the lineage piece Accumulated bone cores and 異 物質 to be able to remove as efficiently as possible. In addition, in the present invention, since the lining paper is not impacted by the strong rotating blades of the impeller in the process of separating the corrugated cardboard into the corrugated core and the lining paper, the rate of recovery of the lineage containing a large amount of long fibers is established in the existing method (Korean Patent Registration No. 10 -0735656) , and because it is not a method of rotating the impeller at high speed in a resistive fluid, it can save a lot of power. In addition, unlike the existing process, all processes were implemented with one pulper.

When the waste cardboard is separated into long-line liner and short-fiber corrugated core by using the present technology, there is an effect as follows compared to the conventional batch method or a method of inputting multiple facilities.

First, the electric energy saving effect of the pulper is great. When the waste cardboard is put together with a certain amount of white water into the vertical pulper and the impeller mounted on the bottom of the pulper is rotated, the rotating impeller receives the strong fluid resistance of the white water and requires a lot of electric power. In particular, when the pulper is operated in a batch method, since the impeller rotation is discontinuous, the initial starting power is very consumed due to the characteristics of the electric motor. When measuring the amount of power required to remove the same amount of corrugated cardboard, the horizontal pulper operation method saves more than 50% of the electricity consumption compared to the vertical pulper method.

Second, the strong rotational impact of the impeller can prevent the disintegration of the lineage pieces in the white water, thereby increasing the recovery rate of the long fibers contained in the lineage. In general, in the case of a vertical pulper in which an impeller is mounted at the bottom of the pulper, since the impeller rotates at a high speed of about 200 times per minute, the lineage pieces in the pulper are inevitably subjected to strong impact by the impeller rotor blades. This can only be dissociated. Therefore, in the case of the vertical pulper, the impeller rotor blade is designed to be as smooth as possible to reduce the amount of dissociation of the lineage pieces. However, in the case of the horizontal pulper, there is no impeller rotating at a high speed, thereby preventing the disintegration of the liner pieces in the pulper, thereby increasing the long fiber recovery rate.

Thirdly, the lineage pieces separated by vertical pulpers are cleaner than the lineage pieces separated by vertical pulps because they are rotated with white water and proceed towards the outlet as they move toward the outlet. Because they are separated into pieces, you can get high quality long fibers.

Fourth, since it is not subjected to strong impact by sharp impeller rotor blades rotating at high speed when disintegrating LINAGE, it can reduce long fiber breakdown as much as possible and recover high strength long fiber. Because the long fibers contained in the waste cardboard are already agglomerated long fibers, a strong impact on these long fibers can cause the fine fibers (fibrillated fibers) of the long fibers to fall off. When dissociated at low speed by horizontal pulper, it can be recovered as it is because it dissociates the lineage while protecting the fine side branches (fibrillated fibers) of the already beaten long fibers.

Fifth, since the whole process of separating and dissociating waste cardboard is continuously performed without stopping in the middle from inputting raw materials to discharging long fibers, the efficiency and management of work is easy.

Sixth, unlike the existing method, the multifunctional pulverizer was given to a single pulper, resulting in the reduction of manpower for operation, reduction of capital investment, and reduction of installation space.

[Example]

In the present invention, a pulper has been specially designed as shown in FIG. 3, and a pulper has a structure and function as follows.

First, the cylindrical pulper is mounted on a support provided at suitable intervals so that the long length of the pulp body itself with the inlet and outlet of the material can rotate.

The inside of the rotary pulper mounted on the second support attaches a number of protruding strips (appropriate height and width) perpendicular to the inner surface of the pulper or at an appropriate angle with a helical spiral path to allow the injected contents to move toward the outlet.

Third, when the waste cardboard and white water are put into the rotary pulper raw material inlet, and the pulper body is rotated at an appropriate speed, the waste cardboard and white water put into the pulper rotate together as the body rotates. In successive collisions with several protruding iron fragments, the corrugated cardboard is crushed and fragmented, and the corrugated core dissociates to unemployed.

The fourth core dissociated in the white water is discharged to the outside through the small holes in the wall in the section [Fig. 2] ③ moving in the direction of the outlet

In the fifth step ([Fig. 2] ② section) contents including the lineage pieces that have not been dissociated are moved in the direction of the outlet while [washing] in the section [Fig. 2] ④ section by washing water (shower water). Through the small holes in the

After finishing washing in the sixth step ([Fig. 2] ④ section), the contents are dissociated and dissociated into newly introduced white water while continuously colliding with several protruding iron pieces inside [Fig. 2] ⑤ section. Is discharged to the outside through small holes drilled in the pulper wall in section ⑥ of [Fig. 2].

In the seventh step ([Fig. 2] ⑤ section), various foreign materials (rock, wood chips, sticky, iron pieces, etc.) that are not dissociated are discharged through the pulp outlet of [Fig. 2].

If the waste cardboard is selectively separated and recycled into short-core corrugated paper and liner paper containing a large amount of long fibers, the paper makers who use a large amount of expensive natural pulp (UKP) will be required to pay the cost of raw materials for paper production. Can be greatly reduced. In fact, after separating the US waste corrugated cardboard into corrugated paper and liner paper using this technology, we measured the fiber length distribution of liner paper containing a large amount of long fiber and showed sufficient value to replace natural pulp. It will be worth it. At present, paper companies producing high-strength kraft paper and high-strength liner paper all over the world have a mix of natural pulp and B-grade pulp or US waste corrugated cardboard to reduce raw material costs. To produce. Therefore, in view of such a situation, the recycled pulp produced by the present technology will be very helpful in cost reduction.

Claims for implementing the technology for separating the waste cardboard implemented in the present invention into a lining paper containing a large amount of long fibers and a bone core core is 14 claims as follows:

Particularly, in the present invention, the iron pieces installed in sections ③, ④, ⑥ of [Fig. 2] among the protruding iron pieces indicated in [Claim 5] can be attached by omitting the installation or reducing the number of iron pieces, and when manufacturing the pulper [Fig. 2] If you make a pulper without the entire ⑤, ⑥ section, the lineage pieces and undissociated foreign substances are discharged to the outside without dissociation from this pulper, so they can be used as a pulper to discharge the lineage pieces to the outside. Will be possible with ordinary knowledge.

1 is a process flowchart schematically showing a method for separating waste cardboard in a continuous manner into short fibers and long fibers according to an embodiment of the present invention,

Figure 2 is a schematic diagram of the whole system for separating the waste cardboard in short fibers and long fibers according to an embodiment of the present invention,

3 is a diagram illustrating the internal configuration of a horizontal pulper according to an embodiment of the present invention;

Claims (15)

Batch process method that automatically implements the entire process of corrugated paper dispensing, corrugated core dissociation, lineage washing, and lineage dissociation Install the power unit that can rotate the cylindrical pulper body at low speed and make the rotation speed variable Installation of input hole for simultaneous input of waste cardboard and white water Installation of rotary spiral type moving furnace where raw materials and white water injected into the pulper can move to the opposite side of the inlet [Fig. 2] attach a plurality of specially produced protruding iron pieces at a right angle or perpendicular to the inner wall of the pulp of the sections ②, ③, ④, ⑤, ⑥ When the injected corrugated cardboard collides with the protruding iron pieces inside the pulper in the section [FIG. 2] ②, when the core core is dissociated first when the core core is dissociated, the core core material solution can be discharged to the outside of the pulp. Small holes on the pulp wall to allow corrugated paper to be discharged Installation of a first variable discharge device for discharging corrugated paper stock solution coming out of the pulper wall holes of claim 6 Installation of wash water to clean contents containing undissociated lineage pieces and white water supply to dissociate lineage pieces Small holes in the wall of the pulper to drain the wash water out of the pulper Small holes in the wall of the pulper to dissociate the disintegrated liner paper solution out of the pulper Installation of a second variable discharge device for discharging lineage paper solution coming out of the pulper wall holes of claim 10 Finally, it consists of installation of outlets that can discharge foreign materials such as vinyl and wood chips, iron chips, and stones that are not dissociated to the outside of the pulp. 1st, 2nd, 3rd and 4th partitions of variable or fixed type to adjust the water level for each section inside the pulper The amount of white water and waste cardboard input into the pulp is calculated, and when the first dissociated bone core material concentration reaches a predetermined concentration, the first variable discharge device is opened to discharge a certain amount of bone core material solution, and An operation function that calculates the amount of cardboard input and automatically enables white water to be continuously fed and software automatic control that implements it. In the section where the separated lineage papers are dissociated, when the concentration reaches a preset concentration, the second variable discharge device is opened to discharge the disintegrated lineage paper solution and the discharged lineage paper solution is calculated. Operational function to be automatically input and software automatic control function to implement it

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