JP3060372U - Styrene resin waste recycling equipment - Google Patents

Abstract

(57) [Summary] [Problem] Dissolution treatment is performed at the generation site, the volume can be reduced, and it can be transported to a distillation separation plant.
Provided is an apparatus for recycling styrene-based resin waste material that can be recycled economically and that can be safely operated without solvent leakage. SOLUTION: A dissolving apparatus having a tank in which water is stored in an upper tank of a methylene chloride-based organic solvent for dissolving styrene-based resin waste material, and filtering and taking in the dissolved styrene-based resin waste material through a filter for separation treatment. And a distillation separation plant that performs the solution separation at a temperature of 50 °
A distillation separation device that is heated to a temperature range of ~ 70 ° and is injected into a vacuum tank to separate the solution into a resin component and a solvent component;
An injection / cutting device that heats the separated resin component to a temperature range of 120 ° to 200 °, melts, injects, and cuts it to form a pellet; Is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a recycling apparatus for recycling styrene-based resin waste (resin waste) such as styrene foam. Specifically, a dissolution treatment is performed at a place where the resin waste is generated, and the solvent component is safely dispersed without being released into the atmosphere. The present invention relates to an apparatus for recycling styrene-based resin waste material that can be operated and can recover high-quality resin materials and oil.

[0002]

[Prior art]

 Styrene-based resins have excellent moldability, and styrene foam in particular has rich elasticity and is lightweight, so it is used as a container for various foods in the food industry and as a cushioning material for product packaging in the electric industry. It is widely used in various industries, such as heat insulation for buildings in the construction industry, as a case material for cold storage or transportation and floating of fixed nets in the fishery industry, and so on.

[0003] In such a large amount of styrene-based resin, it is a matter of course how to dispose it after use. Conventional disposal methods include incineration, physically small pulverization and landfill disposal, and heat melting to regenerate as resin. However, landfill disposal has a problem that the life of the landfill site is shortened, especially in the case of styrofoam. In addition, the incineration method has various problems such as a problem of generation of dioxin and damage to the incinerator main body due to high calories.

There are many problems with the method of heating and dissolving as a resin to regenerate the resin. For example, cleaning must be performed to maintain the quality of the regenerated resin. This requires a large amount of washing water, which is problematic in terms of economic efficiency. In addition, air pollution and odor due to leakage of the solvent for dissolving the resin into the outside world are also serious problems. In addition, a problem common to all disposals is the collection and transportation of Styrofoam waste. In other words, bulky Styrofoam waste that is light in weight can only be loaded on a 4-ton truck, for example, in the order of 150 kg, so that there is a problem that the efficiency of collection and transportation is extremely poor.

[0005]

[Problems to be solved by the invention]

 The present invention has been conceived in order to solve the above-mentioned problems, and it is possible to perform a dissolution treatment at a place where resin waste material is generated, thereby distilling and separating the resin waste material while significantly reducing the volume of the resin waste material. It can be transported to the plant, and it is not necessary to wash it with water in advance, and it is possible to economically regenerate resin waste materials.Furthermore, there is no solvent leakage during dissolution work and no pollution problem occurs The aim is to provide a styrene resin waste material recycling device that can safely perform the melting operation.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a dissolving apparatus having a tank in which water is stored in an upper layer of a methylene chloride-based organic solvent for dissolving styrene-based resin waste material, and the styrene-based resin waste material is provided in the tank. And a distillation separation plant for separating the styrene-based resin and the solvent from the solution while filtering and taking in the solution obtained by charging the solution.The distillation separation plant obtains the solution obtained through the filter. The heated solution is heated to a temperature range of 50 ° to 70 °, and the heated solution is jetted into a decompression tank to separate a resin component and a solvent from each other. The heated resin component is heated in a temperature range of 120 ° to 200 °, and the heated resin component is injected into a noodle shape, cut and formed into a pellet shape, and separated from the injection / cutting device in the vacuum tank. Solvent content And a liquefaction device for cooling and liquefying and recovering.

[0007] Further, a dissolving device having a tank in which water is stored in an upper layer of a methylene chloride-based organic solvent for dissolving styrene-based resin waste material, and a solution obtained by putting the styrene-based resin waste material into the tank, And a distillation separation plant for separating the styrene-based resin and the solvent from the solution while taking in by filtering with a filter. In the distillation separation plant, the solution obtained through the filter is filtered at 50 ° to 70 °. A distillation apparatus for heating the solution to a temperature range, jetting the heated solution into a decompression tank to separate the resin component and the solvent, and reducing the resin component separated in the decompression tank to about 370 °. It is configured to include a pyrolysis device that heats and oilifies, and a liquefaction device that cools and liquefies and recovers the solvent separated in the decompression tank.

Further, the dissolving apparatus is installed at a place where styrene-based resin waste material is generated, a dissolving process is performed at the installed place, and the dissolving apparatus is moved to a place where the distillation separation plant is installed, and The dissolving device and the distillation separation plant are configured as separate devices so that distillation separation is possible.

[0009]

[Embodiment of the invention]

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a styrene-based resin waste recycling apparatus according to the present invention. In the figure, reference numeral 1 denotes a dissolving apparatus for dissolving waste styrene resin represented by styrene foam. This dissolving apparatus 1 is, for example, a utility model registration No. 3047761 filed by the applicant of the present invention. The "dissolution apparatus" is used as it is.

This dissolving apparatus uses a methylene chloride-based organic solvent having a specific gravity of 1 or more as a solvent component, for example, carbon tetrachloride (specific gravity 1.60), trichloroethylene (specific gravity 1.644), methylene chloride (specific gravity). 1.326), ethylene tetrachloride (specific gravity 1.6226) and the like are used alone or in combination. Then, water is stored in the upper layer of the solvent. Since water has a lower specific gravity than the above-mentioned solvent, it is stored in the upper layer of the solvent to seal the solvent, preventing the solvent component (for example, vapor) from leaking out, and thereby performing the dissolving work safely. It is designed to prevent pollution such as air pollution and bad smell caused by evaporation of the solvent.

The dissolving apparatus 1 has, for example, a dissolving ability to reduce the volume of resin waste material of about 1 square meter to about 1/50 in a short time of about 1 minute. Assuming that the dissolution rate of the resin in the solvent is 50%, for example, a resin waste material containing about 500 kg of resin can be dissolved in 1 ton of the solvent. In this case, as the solution is formed, its weight increases, but its volume does not increase much. The dissolution rate can be increased to 60% or 70%. However, if the dissolution rate is increased, the viscosity of the solution increases, and the efficiency of the subsequent separation treatment decreases. This is most appropriate.

Further, when using the dissolving apparatus 1, it is not necessary to dissolve the resin waste material after washing it with water as in the prior art, and furthermore, the label etc. attached to the resin waste material which cannot be removed by washing with water is manually put. The resin waste material can be fed into the melting apparatus 1 as it is without the need to perform the work of peeling off. Due to the dissolution of the resin waste material, those with a low specific gravity such as the label of the affixed paper float on the upper layer of water, and those with a high specific gravity such as pebbles settle in the lower layer. Therefore, for `` floats '' made of styrofoam for fixed nets, which have become a problem in fishing villages, etc. The oyster shell can be put into the dissolving apparatus 1 in a state, and the attached oyster shell precipitates in the lower layer as the resin content dissolves.

The melting apparatus 1 as described above is installed in a place where resin waste is generated, for example, a supermarket, a styrene foam processing, or a factory where resin waste is generated. The dissolving device 1 is installed at a place where resin waste material is generated, and the resin waste material is dissolved at this location, so that a storage space for the resin waste material is not required as in the related art. Can prevent the generation of offensive odor and the deterioration of aesthetic appearance due to the accumulation of odor. Furthermore, since bulky resin waste such as styrofoam is not transported, the efficiency of collection and transport is dramatically improved.

The dissolving apparatus 1 in which the resin waste material is dissolved at a dissolution rate of 50% is transported by a transport vehicle to a distillation separation plant 2 as a treatment facility. In the distillation plant 2, first, only the middle layer solution in which resin waste materials other than the upper layer water and the lower layer pebbles are dissolved in the dissolving apparatus 1 is distilled by the filter 3 while filtering paper, pebbles, oyster shells and the like. It is taken into the separation device 4. In this distillation / separation apparatus 4, the taken-in solution is heated in the range of 50 ° to 70 °.

The solution heated in the distillation / separation apparatus 4 is discharged into a reduced-pressure tank 5 that is reduced in pressure. By this injection, the resin component becomes flake-like and accumulates in the decompression tank 5. Further, the solvent component is vaporized in the injected vacuum tank 5, and the vaporized solvent component is led to the liquefier 6. Then, the solvent liquefied by cooling is recovered in the recovery tank 7 and used again as the solvent of the dissolving device 1. When recovering the solvent, a small amount of water may be coagulated and recovered at the same time. However, since this water covers the surface of the solvent in the recovery tank and prevents its evaporation, it is not particularly necessary to remove it. Absent.

The flakes as a resin component are stored in a receiving tank 8, and then heated by an injection / cutting device 9 in a range of 120 ° to 200 ° to be melted, injected, and cut. Thereby, it is formed into a pellet and collected in the collection tank 10.

Further, as another treatment of the flakes stored in the receiving tank 8, an oiling treatment is performed. In this oiling treatment, the flakes are heated at a temperature of about 370 ° in the thermal cracking device 11 to perform a thermal cracking treatment, thereby refining a fuel oil similar to heavy oil A. Is performed in a temperature range of about 370 ° to about ± 3 °. If this temperature is too high, the treated and refined fuel oil will be darkened, and high quality fuel oil cannot be obtained. When heated at a temperature of about 370 ° as in the present invention, a transparent and high-quality fuel oil can be obtained. As described above, styrene resin waste is recycled. In the above-described embodiment, the melting device 1 is permanently installed at the place where the resin waste material is generated. However, as another embodiment, the melting device 1 is loaded on a collection-only vehicle. Around the facility where the resin waste material is generated.

[0018]

[Effect of the invention]

 As described above, according to the present invention, it is possible to perform the dissolution treatment at the place where the resin waste material is generated, so that the resin waste material can be conveyed to the distillation separation plant in a greatly reduced volume. In addition, since there is no need to wash the resin waste material with water prior to dissolution, it is possible to efficiently and economically recycle the styrene resin waste material. Since there is no leakage of solvent vapor, there is no pollution problem, and the melting operation can be performed safely.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a styrene-based resin waste recycling apparatus according to the present invention.

[Explanation of symbols]

 1. Dissolving device 2. Distillation separation plant 3. Filter 4. Distillation separation device 5. Decompression tank 6. Liquefaction device 7. Solvent recovery tank 8. Flake body receiving tank 9. Injection・ Cutting device 10 ・ Pellet recovery tank 11 ・ Pyrolysis device 12 ・ Fuel oil recovery tank

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08K 5/02 C08K 5/02 // C08L 25:04

Claims (3)

[Utility model registration claims] 1. A dissolving apparatus having a tank in which water is stored in an upper layer of a methylene chloride-based organic solvent for dissolving styrene-based resin waste material, and a solution obtained by putting the styrene-based resin waste material into the tank. A distillation separation plant for separating the styrene-based resin and the solvent from the solution while taking in the solution by filtration with a filter, wherein in the distillation separation plant, the solution obtained through the filter is 50 ° to 70 °
A distillation separation device for jetting the heated solution into a decompression tank to separate the resin component and the solvent; and separating the resin component separated in the decompression tank from 120 ° to 200 ° C. °
And an injection / cutting device for injecting and cutting the heated resin into noodles to form pellets, and cooling and liquefying and recovering the solvent separated in the vacuum tank. An apparatus for recycling styrene-based resin waste material, comprising: 2. A dissolving device having a tank in which water is stored in an upper layer of a methylene chloride-based organic solvent for dissolving styrene-based resin waste material, and a solution obtained by charging the styrene-based resin waste material into the tank. A distillation separation plant for separating the styrene-based resin and the solvent from the solution while taking in the solution by filtration with a filter, wherein in the distillation separation plant, the solution obtained through the filter is 50 ° to 70 °
And a distillation separation device for jetting the heated solution into a decompression tank to separate the resin component and the solvent. The resin component separated in the decompression tank is reduced to about 370 °. An apparatus for recycling styrene-based resin waste material, comprising: a pyrolysis apparatus that heats and oilifies; and a liquefaction apparatus that cools and liquefies and recovers the solvent separated in the vacuum tank. 3. The dissolving apparatus is installed at a place where styrene-based resin waste material is generated, a dissolving process is performed at the installed place, and the dissolving apparatus is moved to an installation place of the distillation separation plant to perform the distillation separation. The styrene-based resin waste recycling apparatus according to claim 1 or 2, wherein the dissolving apparatus and the distillation separation plant are provided as separate apparatuses so that the styrene resin can be used.