KR100661875B1 - Recycling drived fuel using waste paint - Google Patents

Abstract

A combustible solid fuel using waste paint and method for recycling the solid fuel is provided to reuse the waste paint as organic solution and recycle oil product and then reuse the residual as solid fuel. After processing the waste paint, a crusher(2) crushes the residual into a constant size. A pulverizer(3) pulverizes the crushed waste paint residual. A mixer(4) mixes the pulverized waste paint residual and the other functional materials. A molding device(5) molds the mixed waste paint into a granule type or a powder type. A package device(6) packages the product. The mixer mixes the materials by using an agitator.

Description

 Recycling Drived Fuel using Waste Paint

1 is a process diagram of a device for producing waste paint as a representative view according to the present invention.

-Explanation of symbols for the main parts of the drawing-

(1) evaporation, concentration and pyrolysis reactors (2) crushers (3) pulverizers

(4) Mixers (5) Forming Machines (6) Packing Machines

The present invention recycles the waste paint (where the waste paint is a sludge mixed with a solid state and a liquid state) into a product such as an organic solvent or recycled oil by applying evaporation, condensation and pyrolysis, and then utilizes the residue. The present invention relates to a method for producing a solid fuel and a simple system for producing the same, wherein the method for producing a solid fuel according to the present invention is treated with evaporation, condensation and pyrolysis while controlling the temperature, and then in a carbide state. It is to provide a solid fuel and an apparatus for producing the same by molding to a certain shape (granular and powder) by using the residue that is to be emitted.

In recent years, environmental pollution due to various wastes generated during industrialization is getting more serious, and various waste treatment technologies and pollution prevention technologies and policies have been proposed to cope with these problems as they become more real.

Currently, in Korea, waste is treated by landfilling, incineration, and recycling, but in the case of landfill, secondary environmental pollution, which leads to landfill or leachate contamination of land and groundwater, is becoming a problem.

In case of incineration, most of the incinerators are incinerated in the form of trash.In this case, post-treatment facilities are necessary because of air pollutants caused by exhaust gases (HCl, HCN, NOx, dioxin, etc.) after combustion. About 30% of residues are generated due to incomplete combustion, and the residues are buried again in the landfill. However, the residues contain contaminants generated by incineration, which causes secondary pollution due to these incineration residues.

In particular, even in the case of designated waste, the problem is more serious because it is incinerated at high temperature with the garbage instead of being treated separately. The same applies to waste paints that are designated waste. According to the Waste Law of the Ministry of Environment, waste paint can be recycled and the rest can be incinerated at high temperature. However, waste paint has a very slow combustion rate due to the characteristics of waste paint, so it is not properly burned. It is being buried in the landfill along with the remnants.

As such, each high-temperature incinerator in Korea is incinerated with other wastes, even if it is designated waste, so no matter how high-temperature incineration, residues from incomplete combustion may occur. The problem of secondary pollution due to designated waste is even more serious because no one can predict the damage of secondary pollution.

In addition, in the case of conventional incinerators, the capacity to be treated must be somewhat large, and since the initial equipment cost of the incinerator for the throughput is high, the treatment facility capable of incineration compared to the amount of waste generated in each industry at present. Is very lacking.

In addition, in connection with the evaporation, condensation, and pyrolysis reactor of waste paint, which is one component of the present invention, the inventors of the Korean Utility Model Registration Publication No. 20-0393812 describe a recycling apparatus for recovering a solvent and oil using the waste paint. Although disclosed, the technique for producing a solid fuel using the residue obtained using the apparatus is not described or disclosed at all.

Therefore, the present invention recycles the waste paint into products such as organic solvents, recycled oil, etc. by applying evaporation, condensation and pyrolysis, and then recycles the waste paint into solid fuel by using the residue. Compared to the high-temperature incineration method, it is much more economical and the combustion gas discharged to the atmosphere when the waste paint is incinerated without the pretreatment operation because the organic solvent and the polymer substance contained in the waste paint are cracked and removed before burning the waste paint. By using incineration residues discharged from incinerators that can reduce (dioxin, soot) to a minimum, it is possible to provide a solid fuel that can prevent secondary pollution on its own without the addition of organic waste plastics or other organic substances. Need was requested.

It is an object of the present invention to provide a method and a simple system for recycling waste paint (wherein waste paint is a sludge state in which a solid state and a liquid state are mixed) as solid fuel. That is, an object of the present invention is to recycle the waste paint into products such as organic solvents, recycled oil, etc. by applying evaporation, condensation and pyrolysis, and to recycle the solid paint into solid fuel using the residue and the solid produced by the method. It is a fuel supply, and this manufacturing method is much more economical than the conventional high temperature incineration method of waste paint treatment, and also cracks and removes the organic solvent and the polymer substance contained in the waste paint before burning the waste paint. This makes it possible to minimize the combustion gases (dioxin, soot) emitted to the atmosphere when the waste paint is incinerated without any pretreatment operation, and to prevent secondary pollution from incineration residues, while eliminating the need for air pollution prevention facilities. New ways to miniaturize treatment plants and thereby reduce initial capital investment The present invention provides a method for producing a solid fuel using the residue generated from waste paint treatment and a solid fuel produced by the method.

In order to solve the above problems, the present invention recycles waste paint (herein, waste paint is a sludge state in which a solid state and a liquid state are mixed) to products such as organic solvents and recycled oils by applying evaporation, condensation and pyrolysis. Afterwards, it relates to a method for producing a solid fuel using the residue and also a system for producing them,

More specifically, the evaporation, pyrolysis and condensation step of allowing the waste paint to be separated and recycled into products such as organic solvents and regenerated oils by applying evaporation, condensation and pyrolysis; Discharging and recovering the residue of the carbide state remaining in the step; Crushing and pulverizing by using a crusher and a crusher for crushing and pulverizing the residues discharged in a carbide state to a predetermined size in order to produce a solid fuel by using the carbide of the discharged paint; A mixing step of adding the pulverized waste paint carbonized residue and a functional material to mix in a mixer; Molding the mixed waste paint into granules or powders through a molding machine; And a packaging step of packaging the molded product with a packaging machine. The method for recycling waste paint (solid fuel) and the solid fuel therefrom are provided.

Functional materials that can be mixed with the waste paint residue include clay, zeolite, ocher, etc., which increase the heat storage effect of the solid fuel, and the amount of the waste paint residue is used in the range of 5 to 30 parts by weight based on 100 parts by weight of the waste paint residue. In the case of using an amount over the above range, sufficient thermal efficiency does not appear, and in the case of using a smaller amount of the functional material, the combustion capacity is lowered during combustion, and thus a sufficient thermal efficiency cannot be obtained within a given time. Therefore, the present invention is characterized by adding clay, zeolite or ocher as a material to be added to the residue of the waste paint. This is because, in the case of using waste plastics or other organic substances that are conventionally used for producing solid fuels, additional contaminants are generated by the carbonization. As will be described later, the solid fuel using a functional material having a constituent and a composition ratio of the present invention has been found to be used as a very good solid fuel with good combustion efficiency and excellent combustion performance, thereby completing the present invention.

In addition, the present invention by applying the evaporation, condensation and pyrolysis method to the waste paint separated into products such as organic solvents, recycled oil, etc., the evaporator, condensation and pyrolysis decomposer, the carbide of the waste paint discharged after the pyrolysis A crusher and pulverizer for crushing and pulverizing the residue discharged in a carbide state to a certain size in order to produce a solid fuel, a mixer for adding the pulverized waste carbonized residue and other functional materials, granulated the mixed waste paint The present invention relates to a recycling apparatus for waste paint, including a molding machine for molding into a mold or powder, and a packing machine for packing the molded product.

In addition, activated carbon adsorption towers and scrubbers are provided to remove odors and volatile organic compounds (VOCs) that may occur in the process of manufacturing solid fuel using waste paint.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a representative view according to the present invention, after treating the waste paint, a shredder (2) for shredding the residue that is returned to the carbide state to a certain size; A grinder 3 for crushing the crushed waste paint residues; A mixer 4 for adding and mixing the pulverized waste paint residue and other functional materials; A molding machine 5 for molding the mixed waste paint into granules or powders; And a packing machine 6 for packing the product.

The crusher 2 and the crusher 3 used in the present invention are not particularly limited because the residues are easily crushed at room temperature. However, the crusher 2 and the crusher 3 are crushed to a desired particle size by selecting a crusher or a ball mill. And pulverize. The mixer 4 uses an agitator with a stirrer, such as an impeller, and is not specifically limited.

In the present invention, the granular or powder molding machine 5 is not particularly limited as long as it is a molding machine that produces granular particles. However, by heating the mixture discharged from the mixer, the functional material is adsorbed onto the surface of the waste paint particles. It is good to use a molding machine.

Next, the operation of a simple recycling system for recycling the waste paint according to the embodiment of the present invention configured as described above to solid fuel will be described.

First, after the waste paint is processed, the residues which are returned to the carbide state are crushed by a crusher.

When the crushed waste paint is prepared, it is ground using a grinder.

Then, the powdered waste paint and other functional substances are added and mixed. (Mixing step)

Using the molding machine, the mixed waste paint is molded into granular or powder form (regeneration step).

Hereinafter, a method for producing a solid fuel using waste paint will be described in detail using examples according to the present invention.

[ Example]

After collecting the sludge waste paint containing 40% of the waste organic solvent in a drum and recovering it, if the temperature is increased to 700 ℃ or more, the organic solvent and the polymer resin component contained in the waste paint are evaporated and pyrolyzed. Solvent) and decomposition gas (regenerated oil) were heated until no generation, and these gases were condensed to separate organic solvent (thinner) and regenerated oil. At this time, the prepared organic solvent (thinner) and recycled oil are recycled.

After discharging 30% of the solidified carbide residue from the bottom of the pyrolysis machine, the carbide residue was crushed and pulverized to obtain a milled grain having a standard particle diameter of 2.1 mm, and the heat storage effect was applied to the pulverized powder. To increase the ocher was mixed with 25 parts by weight based on 100 parts by weight of the solidified carbide residue pulverized to produce a granular combustible solid fuel (RDF).

And the combustible solid fuel (RDF) prepared by the above was almost no harmful as shown in Table 1 and also showed a very good thermal efficiency of more than 5000kcal in calorific value.

Table 1. Test analysis table of products (solid fuel)

As described above, the present invention recycles waste paint into products such as organic solvents and recycled oils by applying evaporation, condensation, and pyrolysis, and then recycles the waste paint back into solid fuel by using the residue. It is much more economical than the high-temperature incineration method, and because the organic solvent and high molecular substances contained in the waste paint are cracked and removed before burning the waste paint, the combustion gas discharged to the atmosphere when the waste paint is simply incinerated without pretreatment operation. (Dioxin, soot) can be reduced to a minimum, and secondary pollution from incineration residues can be prevented, and since the air pollution prevention facility is not needed, the treatment plant can be miniaturized, thereby reducing the initial investment cost. It works.

Claims (4)

An evaporation, pyrolysis and condensation step of allowing the waste paint to be separated and recycled into products such as organic solvents and recycled oils by applying evaporation, condensation and pyrolysis; Discharging and recovering the residue of the carbide state remaining in the step; Crushing and pulverizing by using a crusher and a crusher for crushing and pulverizing the residue discharged in a carbide state to a predetermined size in order to produce a solid fuel by using the carbide of the waste paint discharged; Mixing step of mixing any one or more selected from the functional material clay, zeolite and loess 5 to 30 parts by weight in a mixer with respect to 100 parts by weight of the pulverized waste paint carbonized residue; Solid fuel production method using waste paint having a. The method of claim 1, After the mixing step further comprises the step of molding the mixed waste paint in a granular or powder form through a molding machine, characterized in that the solid fuel using the waste paint. Combustible solid fuel (RDF) prepared by the method of claim 1 or 2. Decomposer for evaporating, condensing and pyrolyzing waste paint, shredder and crusher for crushing and pulverizing the residue discharged in carbide state to produce solid fuel by using carbide which is the residue of waste paint discharged after pyrolysis. The combustible solid fuel of claim 3 is prepared, including a mixer for adding pulverized waste paint carbonized residue and a functional substance, a molding machine for molding the mixed waste paint into granular or powder form, and a packing machine for packaging the molded product. Device.

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