KR20160000895A - Method for recycling waste resin using crushing process, cleaning process, mixing process - Google Patents

Abstract

The present invention relates to a method for recycling a waste resin using a crushing process, a cleaning process, and a mixing process and, more specifically, to a method for recycling a waste resin widely applied regardless of the type of the waste resin by enabling the waste resin and a waste zeolite catalyst emitted from an oil refinery to be well mixed, and improving various properties of a recycled resin manufactured by the method.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recycling waste resins using a crushing process,

The present invention relates to a method for regenerating a waste water using a pulverizing process, a washing process and a mixing process, and more particularly, to a method for regenerating waste water using a pulverizing process, a washing process and a mixing process, And to a method for regenerating waste water which can improve various properties of a recycled resin to be produced.

In general, synthetic resin is a material that is useful for industrial fields, but it is very difficult to regenerate and concentrates much attention on disposal of wastewater generated by disposal of wastewater or general goods from product production facilities using synthetic resin However, in the case of disposing such waste paper, it is wasted resources as well as serious problems that pollute the environment. Therefore, research efforts have been made to make recycling possible, but in reality, The processing cost is higher than the cost of using the pure raw material, and a considerable amount of the raw material is discarded. Especially, even if the product is produced by recycling, the quality thereof is rapidly deteriorated and the field of use is extremely limited.

A method of manufacturing a synthetic resin multi-layered sheet material using a waste paper of Korean Patent Registration No. 0184727 (registered on December 21, 1998, 1998) and a method of producing a sheet material by injecting synthetic resin into an extrusion die, And mixing the wastewater into the melted resin (5); A step of injecting the mixture into an extrusion die together with a mesh body and a composite resin and simultaneously extruding the mixture; A step of embossing a plate material having a mesh layer and a composite resin layer on both sides of the wastewater layer; A step of indirectly cooling the plate material; Directly cooling the plate material; A step of pulling the plate material; A method to utilize waste paper as a process of cutting side and length of plate is suggested.

However, in the past, only the use of waste water as a plate material has been proposed, but the waste water recovery has not been proposed to be used in various fields by regenerating the waste water itself.

Accordingly, the present invention provides a method for effectively regenerating a waste resin by using a pulverization process, a washing process, and a mixing process.

According to an aspect of the present invention, there is provided a waste water regeneration method using a pulverizing step, a washing step, and a mixing step,

A pulverizing step of finely pulverizing wastewater, lung cancer cotton, waste glass fiber, etc. in a pulverizer; A washing step of washing the shredded raw materials while conveying them into the mixer using strong air pressure; A zeolite spent catalyst mixing step of mixing the washed pulverized product and a zeolite spent catalyst having an average particle diameter of 70 to 200 m in a weight ratio of 100: 30 to 100: 50; And an extrusion process in which the mixture is melted and extruded to form a bar or a plate.

The waste water regeneration method using the pulverizing step, the washing step and the mixing step according to the present invention by the above-

By using the zeolite spent catalyst discharged from the refinery to improve the compatibility between the waste resin and the zeolite spent catalyst, it can be widely applied regardless of the kind of the waste paper, and various properties of the produced recycled resin can be improved. Further, the zeolite spent catalyst faithfully performs the function of an inorganic filler commonly used in the production of resin, thereby solving the environmental problem by recycling the waste resources, and at the same time, the cost of recovering the waste water can be greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention based on these examples.

The waste water recovery method according to the present invention will now be described.

First, the raw material is pulverized.

In the grinding step, the raw material is put into a pulverizer through a hopper, and then the pulverizing blade attached to the rotating shaft at the center of the pulverizer is rotated at a high speed using a motor to crush the raw material.

At this time, the size of the finely crushed raw materials is set to be 0.5 cm to 5 cm, since too small or too large can not be easily mixed with each other.

The raw materials include wastewater, waste cotton, waste glass fiber and the like. Styropol and urethane are the representative examples of wastewater, but all other resins such as polyethylene resin, polystyrene resin and polypropylene resin may be used.

The mixing ratio of the raw materials was adjusted to 92: 8 (based on weight%) or waste water and waste glass was 92: 8 (based on weight%), respectively, However, the ratio may be different if necessary.

The raw material is crushed by the crushing blade rotated at a high speed by the motor inside the crusher, and falls downward.

The crushing blade is attached to the center axis of the crusher, and when the center axis is rotated by the motor, the crushing blade is rotated together with the crusher to grind and mix the raw material introduced into the hopper.

Next, the cleaning process is performed.

Crushed raw materials in the grinder are transferred to the mixer using strong air pressure to allow the cleaning to take place.

The air is injected with a compressor, but if the air pressure is too low, the speed of conveyance becomes poor, and if it is too strong, it causes problems in the mixing process of the raw material and the adhesive, and therefore, it is preferable to set it to 4 kg / cm 2 to 7 kg / cm 2.

The pulverized material having been washed has a zeolite waste catalyst mixing step of mixing zeolite waste catalyst having an average particle diameter of 70 to 200 mu m at a weight ratio of 100: 30 to 100: 50, and a zeolite waste catalyst mixing step in which the mixture is melted and extruded, The extrusion process is performed.

Since zeolite spent catalyst is a material to be discarded after being used in an oil refinery, it can be easily mixed with wastewater, which is a petrochemical product. Conventionally, when reclaiming wastewater, the waste water is first melted and then an inorganic filler is added. There is a problem in that a portion where the filler is aggregated is not uniformly mixed in the molten resin and cracks are generated in the portion. The zeolite spent catalyst is easily mixed with the waste resin melt And the occurrence of cracks can be remarkably reduced since they can be mixed and uniformly dispersed. In addition, since the resin can be easily mixed regardless of the kind of the resin, the recycling of the waste paper can be economically achieved and is also very effective in terms of environmental protection.

According to the present invention, in the recycling of the waste paper, irrespective of the kind, the waste resin is subjected to a pulverizing process and a washing process, followed by melting, and then a zeolite waste catalyst is added, or the waste paper is first processed by a pulverizing process and a washing process The primary product, the cleaned pulverized product, is melted together with the zeolite spent catalyst. As described above, the zeolite spent catalyst preferably has an average particle size in the range of 70 to 200 mu m. When the particle size is less than 70 mu m, the function as an inorganic filler is difficult to exhibit smoothly. When the particle size exceeds 200 mu m The moldability is deteriorated and the quality of the recycled resin to be produced becomes poor.

The added amount of zeolite spent catalyst is preferably in the range of 30 to 50 wt.% With respect to the waste paper. When it is less than 30 wt.%, The strength properties of the reclaimed resin are lowered. When it exceeds 50 wt. .

In molding the molten resin mixture, the conventional molding method can be applied as it is, and it can be formed into a plate by press molding after press molding or extrusion by means of an extrusion process.

According to the present invention, in addition to the zeolite spent catalyst, the blowing agent may be further mixed with the waste water regeneration method. The foaming agent is not particularly limited as long as it is usually used in the production of a resin, and an appropriate amount is used depending on the use of the recycled resin. In addition, it is a matter of course that the additive which can be conventionally used in the production of the resin can be appropriately used depending on the use of the recycled resin.

Example 1

The cylinder temperature of the melt extruder was heated to about 250 ° C., and a pulverization process of pulverizing the pulverized product to a length of 1 centimeter through an inlet and a cleaning process of removing impurities were carried out.

At this time, 30 wt% of zeolite spent catalyst (average particle diameter of about 70 mu m) was added to the waste vinyl, and about 0.5 wt% of sodium bicarbonate as a foaming agent was added to waste vinyl to melt the pulverized vinyl waste and the additives together.

Subsequently, the molten and mixed composition was extruded through an extruder, and a molded article in the form of a drainage duct was obtained by using a press molding machine.

The same molded article was obtained in the same manner except that no zeolite spent catalyst was added for comparison.

As a result, when the zeolite spent catalyst was used, the cooling rate of the molded article was fast and the surface characteristics and the strength characteristics were good. However, when the zeolite spent catalyst was not used, the cooling rate of the molded article was slow, The surface appeared to be uneven due to cooling shrinkage, and the strength properties were not good.

Example 2

The pulverized product, which was crushed to a length of 1 cm and the cleaning process to remove impurities, was first melted. The zeolite waste catalyst was added to the melt at a weight ratio of 100:50 to melt it, and then melted and molded in the same manner as in Example 1 to obtain a drainage channel. The drainage line thus obtained exhibited similar properties to those of the drainage channel obtained by using the zeolite spent catalyst in Example 1. However, the physical properties of the zeolite spent catalyst and the pulverized zeolite waste catalyst were mixed and melted to some extent.

Claims (1)

A pulverizing step of finely pulverizing wastewater, lung cancer cotton, waste glass fiber, etc. in a pulverizer;
A washing step of washing the shredded raw materials while conveying them into the mixer using strong air pressure;
A zeolite spent catalyst mixing step of mixing the washed pulverized product and a zeolite spent catalyst having an average particle diameter of 70 to 200 m in a weight ratio of 100: 30 to 100: 50; And
And an extrusion step of melting the mixture and extruding the mixture into a bar or a plate.

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