JP2002038388A - Method for reutilization of waste laminated paper or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for reutilization of waste laminated paper, etc., by which cellulose can readily be taken out from synthetic resin laminates or aluminum foil laminated paper in which good quality cellulose is used, and be reused as a raw material for good quality paper and the remainder can be formed as gel-like fuel. SOLUTION: This method for reutilizing waste laminated paper, etc., is constituted of a heating and boiling step for heating and boiling laminated paper or general waste paper used as a container, etc., for beverage and foods, etc., with an acidic solution or waste and allowing the laminated paper and the general waste paper to stand for a definite time, a crushing step for crushing the heated and boiled material after passing through the heating and boiling step by a mixer, a metal or resin removing step for removing metal or resin material by gravity concentration from crushed material solution after passing through the crushing step and a cellulose separation step for separating cellulose by mesh selection from a solution separated in the metal or resin-removing step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recycling synthetic resin laminated paper, aluminum foil laminated paper and general waste paper used as containers for beverages, foods and the like.

[0002]

2. Description of the Related Art Conventionally, containers and the like laminated with synthetic resin or aluminum foil are difficult to separate from synthetic resin sheet or aluminum foil and paper, and are not reused as industrial waste, burning garbage, and non-combustible garbage. Is being processed.

[0003]

The synthetic resin laminated paper and aluminum foil laminated paper used in conventional beverages and food containers are also produced from milk cartons at culture centers and the like. Clearly, high quality cellulose is used, but as mentioned above, it is treated as garbage with little reuse,
There was a disadvantage that paper resources were wasted.

The present invention has been made in view of the above-mentioned conventional drawbacks,
Laminate that can easily take out cellulose from synthetic resin laminated paper or aluminum foil laminated paper using high quality cellulose and reuse it as a raw material for high quality paper, and use the rest as gelled fuel It is intended to provide a paper recycling method.

The above and other objects and novel features of the present invention will become more completely apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the technical scope of the present invention.

[0006]

In order to achieve the above-mentioned object, the present invention provides a method for heating and laminating laminated paper or general waste paper used at least as a container for beverages and foods with an acidic solution or water for a certain period of time. A heating and boiling step of leaving, a pulverizing step of pulverizing the heated and boiled material having passed through the heating and boiling step with a mixer, and a metal / resin material removing step of removing a metal or resin material by specific gravity sorting of the pulverized solution passed through the pulverizing step. A cellulose separation step of separating the cellulose separated by mesh separation of the solution separated in the metal / resin material removing step; and calcium hydroxide, sodium hydroxide, etc., in the metal / resin material removed in the metal / resin material removing step. A liquid or gelled fuel manufacturing process in which an additive for preventing the generation of harmful gases is added and heated to be processed into a liquid or gelled fuel. Constitute a recycling processing method of the used paper for laminated paper or the like.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 6, reference numeral 1 denotes a synthetic resin obtained by opening or cutting a container used for a beverage, food or the like as shown in FIG. In a heating and boiling step in which the laminated paper 2, the aluminum foil laminated paper 3 and, if necessary, an ordinary waste paper and an acidic solution or water 4 are placed in a heating furnace 5 and heated and boiled for a certain period of time, for example, left for about half a day, In the heating and boiling step 1, the synthetic resin laminated paper 2 and the aluminum foil laminated paper 3 are used to absorb water and make them in a swelled state. State. The burner 6 of the heating furnace 5 is an MK21 type burner (trade name of MK Research Institute).
In this burner 6, a liquid or gelled fuel 7 is used.

Reference numeral 8 denotes a pulverizing step of pulverizing the synthetic resin-laminated paper 2 and the aluminum foil-laminated paper 3 obtained by baking the heated boiled material 9 having passed through the heating and boiling step 1 with a mixer 10 as shown in FIG. The main purpose of No. 8 is to peel the paper from the synthetic resin sheet or the aluminum foil and finely pulverize the paper.

Reference numeral 11 denotes a pulverized solution 12 having passed through the pulverization
As shown in FIG. 4, a metal / resin material removing step of removing metal or resin material 13 by specific gravity separation is performed.
The resin material removing step 11 is performed by taking out the solution 14 while leaving the metal or resin material 13 precipitated at the lower part in the mixer 10.

Reference numeral 15 denotes a cellulose separation step in which the solution 14 from which the metal / resin material 13 has been removed in the metal / resin material removal step 11 is separated from the cellulose 17 by a mesh 16 as shown in FIG. In step 15, washing or dehydration is performed with water as necessary.

Reference numeral 18 denotes a liquid or gelled fuel manufacturing step for processing the metal / resin material 13 removed in the metal / resin material removing step 11 into a liquid or gelled fuel 7. As shown in FIG. 6, in the manufacturing step 18, an additive 19 for preventing generation of harmful gases such as calcium hydroxide and sodium hydroxide is added to the metal / resin material 13, and the mixture is heated to 200 ° C. to 300 ° C. by a heating and kneading apparatus 20. A heating kneading step 21 for heating and kneading, and a waste oil 23 of vegetable oil or mineral oil is added to a mixture 22 heated and kneaded in the heating kneading step 21 in a heating furnace 24 and heated to 110 ° C to 180 ° C. The liquid or gelled fuel 7 is produced by a liquid or gelled step 25 for liquid or gelled.

Cellulose 17 produced by such a method of recycling waste paper such as laminated paper is used as a raw material for producing high-quality paper, and the liquid or gelled fuel 7 is supplied to the heating furnace in the heating and boiling step 1 described above. 5 or the burner 26 of the heating and kneading apparatus 20 or the burner 27 of the heating furnace 24 in the liquid or gelled fuel production step 18.
Used in.

[0014]

Next, different embodiments of the present invention shown in FIGS. 7 to 10 will be described. In addition,
In the description of the different embodiments of the present invention, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 7 and 8 is mainly different from the first embodiment of the present invention in that a synthetic resin laminated paper 2 and an aluminum foil laminated paper 3 are used. A similar effect can be obtained by performing a heating and boiling step 1A in which the shredded shredder 28 is heated and boiled, and a method of recycling waste paper such as laminated paper using such a heating and boiling step 1A. Can be obtained, and the heating and boiling step 1A can be shortened.

The third embodiment of the present invention shown in FIGS. 9 and 10 is different from the second embodiment of the present invention mainly in that the laminated papers 2, 3 which have been shredded with a shredder 28 are used. In the point that the heating and boiling step 1B was performed using a substance immersed in water for a predetermined time, even if the method of recycling waste paper such as laminated paper using the heating and boiling step 1B is performed, The same operation and effect as those of the second embodiment can be obtained.

In each of the embodiments of the present invention described above, the laminated paper used as a container for beverages, foods and the like is used as the main treated waste paper. However, the present invention is not limited to this, and the present invention is not limited to this. Processing may be performed using only used paper.

[0018]

As apparent from the above description, the following effects can be obtained in the present invention.

(1) A heating and boiling step in which at least laminated paper or general waste paper used as a container for beverages, foods and the like is heated and boiled with an acidic solution or water and allowed to stand for a certain period of time; A pulverization step of pulverizing the boiled product by a mixer, and a metal / resin material for removing a metal or resin material by specific gravity sorting of the pulverized solution passed through the pulverization solution
A resin material removing step, a cellulose separation step of separating cellulose by mesh separation of the solution separated in the metal / resin material removing step, and calcium hydroxide added to the metal / resin material removed in the metal / resin material removing step. A liquid or gelled fuel manufacturing process in which an additive for preventing the generation of harmful gases such as sodium hydroxide is added and heated to be processed into a liquid or gelled fuel. Cellulose that can be used as high quality paper can be separated and taken out from the laminated paper. Therefore, paper resources can be efficiently reused.

(2) According to the above (1), the processing can be performed by the heating and kneading step, the specific gravity selection, and the mesh selection, so that the processing method is easy and easy.

(3) According to the above (1), a synthetic resin material other than cellulose can be made into a liquid or gelled fuel. Therefore, it is possible to efficiently recycle without generating garbage for processing.

(4) Claim 2 has the same effect as (1) and (2).

[Brief description of the drawings]

FIG. 1 is a process chart of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a heating and boiling step according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a crushing step according to the first embodiment of the present invention.

FIG. 4 is an explanatory view of a metal / resin material removing step according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a cellulose separation step according to the first embodiment of the present invention.

FIG. 6 is an explanatory view of a liquid or gelled fuel production process.

FIG. 7 is a process chart of a second embodiment of the present invention.

FIG. 8 is an explanatory diagram of a heating and boiling step according to the second embodiment of the present invention.

FIG. 9 is a process chart of the third embodiment of the present invention.

FIG. 10 is an explanatory diagram of a heating and boiling step according to the third embodiment of the present invention.

[Explanation of symbols]

1, 1A, 1B: heating boiling step, 2: synthetic resin laminated paper, 3: aluminum foil laminated paper, 4: acidic solution or water, 5: heating furnace, 6: burner, 7:
Liquid or gelled fuel, 8: grinding process,
9: heated boiled product, 10: mixer, 11: metal / resin material removing step, 12: pulverized solution, 13: metal / resin material, 14: solution, 15: cellulose separation step, 16: mesh, 17: cellulose, 18 : Liquid or gelled fuel production process, 19:
Additive: 20: heating kneading apparatus, 21: heating kneading step, 22: mixture, 23: waste oil,
24: heating furnace, 25: liquid or gelation step, 2
6: burner, 27: burner, 28: shredder.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D21B 1/32 B09B 5/00 ZABZ F-term (Reference) 4D004 AA12 AB03 AC05 BA03 BA09 CA04 CA10 CA15 CA41 CB13 CB27 CC12 4H013 AA01 4H015 AA01 AA12 AB01 BA12 BB01 BB03 BB12 CB01 4L055 AA11 AG16 AJ01 FA30 GA50

Claims (2)

[Claims] 1. A heating and boiling step in which at least laminated paper used as a container for beverages, foods and the like is heated and boiled with an acidic solution or water and allowed to stand for a certain period of time; A metal / resin material removing step of removing metal or resin material by specific gravity sorting of the pulverized solution passing through the grinding step, and a cellulose separated by mesh sorting the solution separated in the metal / resin material removing step. Cellulose separation step of separating the metal and resin material in the metal and resin material removal step, calcium hydroxide, an additive for preventing the generation of harmful gases such as sodium hydroxide and the like, and heated, liquid or A process for producing a liquid or gelled fuel for processing into a gelled fuel. 2. A heating and boiling step in which one or both of laminated paper and general waste paper used as containers for beverages, foods and the like are heated and boiled with an acidic solution or water and left for a certain period of time; A pulverization step of pulverizing the heated and boiled product through a mixer with a mixer, a metal / resin material removal step of removing a metal or resin material by specific gravity sorting of the pulverized solution passed through the pulverization step, and a metal / resin material removal step A cellulose separation step of separating the cellulose obtained by mesh separation of the obtained solution.