KR102409513B1 - System for sorting wast - Google Patents

Abstract

The present invention is a waste sorting system for sorting high-quality solid fuel (SRF) from waste, the input step of inputting the primary crushed waste through the hopper (10) into the sorting unit (20); A specific gravity screening step of separating the light weight and the heavy material through the winnowing movement (R) of the selection unit 20; A magnetic separation step in which the magnetic material contained in the light and heavy objects is separated in the process of specific gravity selection and separation of the light and heavy objects; and a soil separation step in which the soil separated from the light and heavy objects in the specific gravity selection step is separated through the soil discharge unit 40; Including, a final screening step of discharging the heavy and light materials selected through the specific gravity screening step of (b); It is characterized in that it includes.

Description

Waste sorting system {SYSTEM FOR SORTING WAST}

The present invention relates to a system for sorting high-quality solid fuel from waste, and more particularly, to elaborate lightweight materials, heavy materials, magnetic materials and non-magnetic materials, soil and micro-light materials through input of general waste and winnowing operation. It relates to a waste sorting system that can be selectively separated.

In order to produce high-quality solid fuel (SRF) from general waste, non-combustible materials such as scrap iron, non-ferrous metal, stone, and sand must be selected from the waste. For this purpose, a specific gravity sorter (wind power sorter) and/or a soil sorter (trommel) are mainly used.

For this purpose, as a prior art disclosed as a wind power separator, there are a utility model registered in the Republic of Korea No. 20-0409641 (wind power specific gravity separator) and a utility model registered in the Republic of Korea No. 20-0411275 (a wind power separator for recycled products).

Utility Model Registration No. 20-0409641 sorts recyclables by wind power according to specific gravity, but has the effect of preventing contamination of the discharged air by collecting dust. As a result, there is a problem that the sorting effect of recyclables cannot be greatly improved, and the inflow and outlet of recyclables are formed in the same horizontal direction, so that there is a problem that the recyclables that should be discharged by the vortex action of the cyclone flow in.

Utility Model Registration No. 20-0411275 has the advantage of sorting recyclables into heavy, light, and very light items according to their weight. Although it is filtered, the air along with dust is discharged to the outside, which has a problem of poor working environment due to dust scattering.

In addition, referring to FIG. 1, the wind separator generally requires a space of about 20 m, and it is not easy to implement a technology to control the circulating wind power. There is a problem in that it cannot be precisely selected.

On the other hand, there is a limit to the separation of fine combustible substances such as dust or styrofoam powder because the soil separator sorts the soil only by the size of the hole by the rotational force.

In addition, when the wind separator and the soil separator are installed at the same time, a space of at least 40 m is required, and there is a problem in that it is an expensive facility, making it impossible for small businesses to use it.

The present invention has been devised to solve the above problems, and an object according to an aspect of the present invention is that specific gravity and soil selection of general waste are possible at the same time, light weight and heavy material, magnetic material and nonmagnetic material, soil and soil It is to provide a waste sorting system capable of sorting high-quality solid fuels capable of sophisticated sorting of combustible and non-combustible substances including dust and micro-light substances.

The present invention is a waste sorting system for sorting high-quality solid fuel (SRF) from waste, the input step of inputting the primary crushed waste through the hopper (10) into the sorting unit (20); A specific gravity screening step of separating the light weight and the heavy material through the winnowing movement (R) of the selection unit 20; A magnetic separation step in which the magnetic material contained in the light and heavy objects is separated in the process of specific gravity selection and separation of the light and heavy objects; and a soil separation step in which the soil separated from the light and heavy objects in the specific gravity selection step is separated through the soil discharge unit 40; Including, a final screening step of discharging the heavy and light materials selected through the specific gravity screening step of (b); It is characterized in that it includes.

Preferably, the (d) soil separation step comprises: (d1) a dust suction step of sucking the dust generated when the soil is separated; And (d2) a lightweight water suction step of sucking the lightweight material contained in the soil; filtering step of further comprising, filtering the dust and foreign substances contained in the light weight material sucked through the (d1) and (d2); It is characterized in that it further comprises.

According to one aspect of the present invention, the present invention is a winnowing exercise (R) and soil selection in the specific gravity screening step and the soil screening step by wind screening, which are essentially performed in order to sort the conventionally crushed general waste into solid fuel (SRF). It is possible to perform sorting by integrating it into one step called step, and magnetic sorting and dust removal can be performed at the same time during the sorting process.

In particular, unlike the conventional wind power sorting process, specific gravity sorting is possible without using wind power, so it is possible to sort light and heavy objects in a relatively narrow space. process efficiency can be improved.

1 is a photograph of a conventional general wind power sorting device.
2 is a schematic process flow diagram of a waste sorting system according to an embodiment of the present invention.
3 is a schematic conceptual diagram of a waste sorting system according to an embodiment of the present invention.
It is revealed that the accompanying drawings are exemplified by reference for understanding the technical idea of the present invention, and the scope of the present invention is not limited thereby.

Hereinafter, a waste sorting system according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

2 is a schematic process flow diagram of a waste sorting system according to an embodiment of the present invention, and FIG. 3 is a schematic conceptual diagram of a waste sorting system according to an embodiment of the present invention.

2 and 3, in the waste sorting system according to an embodiment of the present invention, the step of inputting the primary crushed waste to select high-quality solid fuel from the waste, the specific gravity screening through the winnowing movement (R) It includes a magnetic separation step and a soil separation step along with a specific gravity screening step, and a discharge step of the final screening of light and heavy materials.

The present invention may include a conventional crushing step, a pulverizing step, a control step, and a central server for sorting waste, and a screening step (magnetic screening step, non-ferrous metal screening step, etc.) provided in normal solid fuel sorting, and transporting waste It goes without saying that this embodiment can be provided in the present embodiment, and in this embodiment, the description will be focused on the configuration of the sorting step for sorting the primary shredded waste.

Solid Refuse Fuel (SRF) is a solid fuel obtained by selecting combustible materials such as waste synthetic resin, waste paper, and waste wood with a calorific value of 4,000 Kcal/kg or more from solid waste, and then turning it into fuel through processing such as crushing and drying. do. The above solid fuel can be recycled mainly as auxiliary fuel for power plants, district heating, and industrial boilers, so it is possible to minimize the generation of waste and to maximize the recycling of usable resources among wastes.

The higher the purity of these solid fuels, the higher the fuel use value. process is essential.

However, the wind current screening (specific gravity screening) process generally used to screen solid fuels is a process that separates relatively light combustible materials such as waste synthetic resin, and it takes at least 20m or more of space to accommodate the wind power sorting device. Since it is not easy to implement the technology to control wind power, precise specific gravity selection is not possible, so there is a problem in that precise selection of light sand, non-ferrous metal, and stone is impossible. In addition, a soil separation device is used separately from the wind power sorting device, and although it is a device that sorts only soil, a space of about 10 m or more is consumed, and there are disadvantages in that it cannot separate combustible materials such as basins or fine Styrofoam powder included in the soil.

Accordingly, the present invention performs steps such as magnetic force sorting and dust removal in one sorting step centering on the specific gravity sorting step and the soil sorting step by winnowing operation, not by wind power sorting, so as to utilize a relatively narrow space for precise specific gravity sorting. made this possible.

In more detail, referring to FIG. 3 through FIG. 2 , through the input step of putting the primary crushed waste through the hopper 10 into the sorting unit 20 , the winnowing movement (R) of the sorting unit 20 . Specific gravity screening step of separating light and heavy materials, magnetic separation step in which magnetic materials contained in light and heavy materials are separated in the process of specific gravity screening and separation of light and heavy materials, and separation from light and heavy materials in the specific gravity screening step It includes a soil separation step in which the soil is separated through the soil discharge unit (40).

The input step is a step of inputting the crushed waste obtained by first crushing the general waste into the sorting unit 20 through the hopper 10 for the sorting step. Therefore, it corresponds to waste containing combustible materials such as waste synthetic resins, waste paper, and waste wood, and foreign substances such as magnetic materials, non-magnetic materials, soil, and dust.

When the primary crushed waste is input to the sorting unit 20 through the (a) input step, the sorting unit 20 pushes and pulls up and down or in the opposite direction as if shoveling. Proceed to the selection stage. The winnowing motion (R) has an advantage in that heavy objects are selected in the pulling direction according to the direction of rotation, and light objects are moved in the opposite direction, so that heavy objects and light objects can be separated and sorted without the use of wind power. In addition, by the winnowing movement (R), the waste sinks by weight, so it is possible to accurately separate relatively heavy non-combustible materials such as stones, scrap iron, non-ferrous metals, pipes, and sand from relatively light materials such as waste paper. there is an effect

Therefore, light and heavy materials such as synthetic resins are separated from the primary crushing waste input to the sorting unit 20, and inflammable materials can be separated and sorted. In addition, by installing the magnetic separation unit 30 at the distal end where the light and heavy objects are separated, the magnetic material mixed in the light and heavy objects can be re-selected.

At this time, the light and heavy materials are selectively separated, and the soil mixed with the light and heavy materials may be discharged to the soil discharge unit 40 composed of a mesh network by the winnowing operation (R). In addition, the dust suction step (dust suction part, 50) that sucks the dust generated by separating the soil so that the dust contained in the generally discharged soil and combustible substances such as fine Styrofoam powder can be selected again and the fine particles contained in the soil It may include a micro-light material suction step (micro tendency water suction unit, 60) for sucking the lightweight material.

Therefore, it is possible to additionally select dust and flammable micro-light contained in soil.

Furthermore, through the air pulse filtering step (air pulse filtering unit, 70) of filtering foreign substances from the dust separated from the soil and flammable microlight, the soil that is not suctioned by the specific gravity can be finally sorted and separated and discharged.

Therefore, when the primary crushed waste is input, even without using a separate wind power sorting device and soil sorting device, light, heavy, magnetic, non-magnetic, dust and fine light are precisely selected and separated, so that combustible and non-combustible materials are used. It has the advantage of being able to separate high-quality solid fuel from general waste easily and quickly because it can separate substances.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

10 Hopper
20 sorting unit
R winnowing exercise
30 Magnetic Separation Unit
40 Soil discharge part
50 dust intake
60 Fine and lightweight water intake
70 Air pulse filtering unit
A heavy
B lightweight
C Soil discharge

Claims (2)

As a waste sorting system for sorting high-quality solid fuel (SRF) from waste,
(a) inputting the primary crushed waste through the hopper (10) into the sorting unit (20);
(b) Separating light and heavy objects through the winnowing motion (R) of the sorting unit 20, but the sorting unit 20 makes a rotational motion of pushing and pulling up and down or in the opposite direction as if shoveling, depending on the direction of rotation A specific gravity screening step through a winnowing motion (R) capable of separating and sorting a heavy object in a pulling direction, dropping or sucking, and a light weight moving in the opposite direction to be sucked into a heavy object;
(c) a magnetic separation step in which the magnetic material contained in the light weight and the heavy object is separated in the process in which the light weight and the heavy object are weighed and separated by the winnowing motion (R) and gravity of the sorting unit 20; and
(d) a soil separation step in which the soil separated from the light and heavy objects in the specific gravity screening step is separated through the soil discharge unit 40; including,
a final sorted product discharging step of discharging the heavy and light materials selected through the specific gravity screening step of (b); includes,
The (d) soil separation step,
(d1) a dust suction step of inhaling the dust generated by separating the soil;
(d2) a microlight suction step of sucking the microlights contained in the soil; and
An air pulse filtering step of filtering foreign substances contained in the dust and light weight sucked through the (d1) and (d2); including,
The waste sorting system, characterized in that (b) ~ (d) is carried out in one process. delete

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