KR20240022011A - Synthetic resin oil reduction system - Google Patents

Abstract

The present invention includes a pretreatment unit 100 that pretreats the collected synthetic resin to obtain a synthetic resin from which impurities have been removed; a supply unit 200 that supplies the synthetic resin pretreated in the pretreatment unit 100 to the reaction unit; A reaction unit 300 that heats the synthetic resin supplied from the supply unit 200 to generate decomposed gas containing oil components; A separation unit 400 that cools the cracked gas supplied from the reaction unit 300 and then separates the oil; A filter unit 500 that filters the oil separated in the separation unit 400; It relates to an oil reduction system of synthetic resin, characterized in that it includes a storage unit 600 that stores the reduced oil filtered by the filter unit 500.

Description

Synthetic resin oil reduction system

The present invention relates to a synthetic resin oil reduction system for recycling waste synthetic resin into oil.

Waste disposal has emerged as an acute social problem, and as oil prices have soared, the need for alternative energy resources from waste has spread not only to companies but also to society due to the enormous cost burden on companies that consume a lot of energy. It is necessary to reduce the energy cost burden on companies and revitalize industries related to increasing productivity, solve economic problems caused by excessive costs, and produce low-cost, high-quality alternative fuel oil with good thermal efficiency and transportability.

In general, plastic is a material that can be molded by heating, pressurizing, or both, or a synthetic resin product using such materials. Typically, plastic refers to a synthetic resin. In the final product, it has a high molecular weight and a large amount of chemical substances (gum) in the solid form, but when molded, it has fluidity and is easy to mold, making it possible to produce articles of various shapes. As it is manufactured in the form of a polymer by polymerizing various substances using petroleum as the main raw material, it is possible to produce polymer compounds with various functions and properties by polymerizing substances that can have the properties desired by the user, and the use and usage are rapidly increasing. It is increasing. In addition, synthetic resins such as plastics are a type of petroleum compound that uses petroleum as the main raw material. As they are manufactured in the form of polymers, they are difficult to decompose, have excellent corrosion resistance, can be used for a long time, and are easy to mold, allowing for various shapes. Because it is light in weight, its usage is rapidly increasing as it is used in a variety of applications, from daily necessities to industrial products.

However, waste plastics discarded after use are difficult to dispose of in landfills due to their non-degradability, which is a characteristic of plastics. When incinerated, various harmful gases are emitted and pollute the air environment, making disposal of waste plastics difficult. . In addition, as reserves of oil, including petroleum, which is the fuel used to produce plastic, are shrinking, the price of oil is rising, and as resources are depleted, the need for reduction of oil existing inside waste plastic is increasing.

To solve this problem, attempts to reduce oil through a high-temperature pyrolysis emulsification process were confirmed. However, in the conventional high-temperature pyrolysis emulsification process, finely broken waste synthetic resin is supplied from a hopper to a high-temperature melting furnace to be melted into a gel state, and then the gel-like melt is heated to a high temperature of 450 ℃ or higher in the pyrolysis reaction furnace, so that it starts from a low boiling point. There was a problem in that many heavy oil components with high boiling points were mixed together, and as a dark brown mixed oil with high viscosity, it contained a lot of heavy metals and harmful substances.

[Prior Document 1] Korean Patent Publication No. 10-0955297 [Prior Document 2] Korean Patent Publication No. 10-0955297 [Prior Document 3] Korean Patent Publication No. 10-0345760 [Prior Document 4] Korean Patent Publication No. 10-1307395 [Prior Document 5] Korean Patent Publication No. 10-0815857

The present invention relates to a synthetic resin oil reduction system for recycling waste synthetic resin into oil.

The present invention preprocesses the collected synthetic resin to obtain a synthetic resin from which impurities have been removed; a supply unit that supplies the synthetic resin pretreated in the pretreatment unit to the reaction unit; a reaction unit that heats the synthetic resin supplied from the supply unit to generate decomposed gas containing oil components; a separation unit that cools the decomposed gas supplied from the reaction unit and then separates the oil; A filter unit that filters the oil separated from the separation unit; It is characterized by providing an oil reduction system of synthetic resin, characterized in that it includes a storage unit for storing the reduced oil filtered by the filter unit.

The reaction unit is composed of a plurality of reaction furnaces, and outputs variable microwaves so that the synthetic resin is heated to different temperatures in the plurality of reaction furnaces.

A catalyst that increases the decomposition efficiency of the synthetic resin is further added to the supply unit and supplied to the reaction unit together with the synthetic resin, and the catalyst is formed as a dielectric heating element heated by microwaves.

The separation unit includes a primary separation unit that separates moisture from the gas by primary cooling; It includes a secondary separation unit that secondarily cools the gas that has passed through the primary separation unit to separate liquefied oil from the gas.

The reaction unit includes an air supply device that supplies external air; It further includes a sludge guiding member, which is a blade protruding from the inner wall in the form of a screw, and a sludge discharge port through which the sludge guided through the sludge guiding member is discharged, and a portion of the inner surface of the reaction unit is coated with aluminum on a ceramic support.

The filter unit includes 30 to 45% by weight of calcined shell powder, 15 to 30% by weight of zeolite powder, 15 to 25% by weight of expanded graphite powder, and 10 to 20% by weight of activated carbon powder.

The reaction unit includes one to a plurality of non-ignition burners formed adjacent to a flow path through which gas moves from the reaction unit to the separation unit; And, an accident prevention unit that prevents an accident expected when gas higher than the standard pressure moves through the flow path, wherein the accident prevention unit includes a pressure gauge installed in the flow path to measure pressure; an emergency discharge pipe capable of discharging gas from the interior of the flow path; An opening/closing control valve that controls opening/closing of the emergency discharge pipe; A control device that controls the opening/closing control valve to open the emergency discharge pipe when an abnormal signal is received from the pressure gauge, wherein the one to plurality of non-ignition burners discharge gas from the emergency discharge pipe. Ignites and completely burns the discharged gas.

The pretreatment unit includes a pulverizing unit that pulverizes the synthetic resin to a certain size; a separation discharge unit installed below the grinding unit, to wash the synthetic resin pulverized by the grinding unit, and to separate and discharge suspended matter and sediment generated during the washing process; A drying unit that dehydrates and dries the synthetic resin separated after washing in the separation and discharge unit; It includes a discharge unit installed on one side of the drying unit and discharging the dried synthetic resin to the outside.

The separate discharge unit includes a housing, a pretreatment unit, a washing unit, and a sediment treatment unit.

The housing is provided on one side with an inlet through which washing water and pulverized synthetic resin flow, and a separation space where suspended matter and sediment are separated.

The present invention has the effect of effectively recycling waste resources by providing a synthetic resin oil reduction system that can decompose reusable synthetic resin and reduce it to oil.

The present invention has the effect of preventing the generation of harmful substances by decomposing synthetic resin at low temperature by polarization and vibration inside the molecule generated by microwaves.

In addition, the present invention has the effect of allowing a high yield of oil to be obtained from the decomposition gas generated by decomposing the synthetic resin by cooling the gas in multiple stages.

In addition, the present invention has the effect of further improving the decomposition efficiency of synthetic resins by allowing the wave energy and microwaves generated from the catalyst to act organically.

In addition, the present invention has the effect of allowing the catalyst to act as a dielectric heating element, rapidly mixing molten synthetic resin and solid synthetic resin, expanding the heat transfer area, and preventing coking.

In addition, the present invention has the effect of separating a large amount of moisture contained in decomposed gas by means of a plurality of separation units, thereby preventing a large amount of moisture from being contained in the condensed oil.

In addition, the present invention uses a filter unit of a specific composition, which has the effect of finally obtaining high-purity reduced oil.

In addition, the present invention decomposes synthetic resin from which impurities have been removed through grinding, drying, and washing steps to obtain oil, thereby obtaining high-purity decomposition gas with a high content of oil components, thereby increasing the yield of reduced oil. Ugh, there is an effect that can be further increased.

In addition, the present invention has the effect of preventing the synthetic resin from being softened at a relatively low temperature and then vaporized and carbonized by rapid heating by heating the synthetic resin to different temperatures in a plurality of reaction units and decomposing it. .

Figure 1 is a block diagram showing a synthetic resin oil reduction system according to an embodiment of the present invention.
Figure 2 is a block diagram showing a preprocessing unit according to an embodiment of the present invention.
Figure 3 is a block diagram showing a reaction unit according to an embodiment of the present invention.
Figure 4 is a block diagram showing a first separation unit according to an embodiment of the present invention.
Figure 5 is a block diagram showing a second separation unit according to an embodiment of the present invention.
Figure 6 is a block diagram showing a filter unit according to an embodiment of the present invention.
Figure 7 shows a separate discharge unit of the pretreatment unit according to an embodiment of the present invention.
Figure 8 is a perspective view showing a pre-processing unit of a separate discharge unit according to an embodiment of the present invention and a cross-sectional view taken along line AA of the perspective view.
Figure 9 is a block diagram showing a synthetic resin oil reduction system according to another embodiment of the present invention.
Figure 10 is a block diagram showing a synthetic resin oil reduction system according to another embodiment of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail in order to enable those skilled in the art to easily practice the present invention.

As shown in Figure 1, the present invention includes a pre-processing unit 100 that pre-treats the collected synthetic resin to obtain a synthetic resin from which impurities have been removed; a supply unit 200 that supplies the synthetic resin pretreated in the pretreatment unit 100 to the reaction unit; A reaction unit 300 that decomposes the synthetic resin supplied from the supply unit 200 to generate decomposition gas containing oil components; A separation unit 400 that cools the cracked gas supplied from the reaction unit 300 and then separates the oil; A filter unit 500 that filters the oil separated in the separation unit 400; It is characterized in that it includes a storage unit 600 that stores the reduced oil filtered in the filter unit 500.

First, the preprocessing unit 100 will be described.

As shown in Figure 2, the preprocessing unit 100 includes a grinding unit 110 that grinds the synthetic resin to a certain size; A separation discharge unit 120 installed at the lower part of the grinding unit 110 to wash the synthetic resin pulverized by the grinding unit 110 and separate and discharge suspended matter and sediment generated during the washing process; A drying unit 130 that dehydrates and dries the synthetic resin separated after washing in the separation and discharge unit 120; It may be configured to include an external discharge unit 140, which is installed on one side of the drying unit 130 and discharges the dried synthetic resin to the outside, and the size and shape may be variously modified.

The grinding unit 110 may be configured to include a pair of grinding rollers equipped with a plurality of grinding blades, and the pair of grinding rollers has grinding blades that alternately rotate and rotates according to the driving of the motor to specify the synthetic resin. It can be crushed to any size.

The separation and discharge unit 120 has an inflow space on one side into which washing water and pulverized synthetic resin flows, and a separation space can be formed to separate suspended matter and sediment from the synthetic resin by the difference in specific gravity. The suspended matter, which has a specific gravity smaller than the synthetic resin, floats to the top of the separation and discharge unit 120 in the pre-washing stage and is first discharged to the outside, and the sediment, which has a specific gravity greater than the synthetic resin, settles downward during the washing process and is discharged to the outside. , It is desirable to allow only purely synthetic resin to be supplied to the drying unit 130.

The separate discharge unit 120 will be described in more detail with reference to FIGS. 7 and 8.

The separation discharge unit 120 is installed below the grinding unit 110, and washes the synthetic resin ground by the grinding unit 110, and separates and discharges suspended matter and sediment generated during the washing process. This separate discharge unit 120 includes a housing 121, a pretreatment unit 122, a washing unit 123, and a sediment treatment unit 124.

The housing 121 has an inlet 121-1 on one side through which washing water and pulverized synthetic resin flows, and a separation space is provided to separate suspended matter and sediment.

A suspended matter separation tank 121-2 is formed on one side of the housing 121 through which the floating matter flows over and is discharged. A valve 121-3 is formed at the bottom of the suspended matter separation tank 121-2 to discharge the suspended matter to the outside.

Meanwhile, between the pre-processing unit 122 and the cleaning unit 123 inside the housing 121, there is a blade 125 that flows to guide the washing water and synthetic resin into rotation.

The blades 125 are coupled to the inner wall of the housing 121 and can rotate, and are preferably streamlined like fan blades, and are preferably arranged inclined at a predetermined angle.

The washing water and synthetic resin passing through the blade 125 collide with each other, forming turbulence. At this time, the antibacterial material may be sprayed from the injection injector 126, and the antibacterial material sprayed here may flow in turbulence and be evenly mixed with the synthetic resin.

An ultraviolet lamp 127 may be further installed inside the housing 121 to suppress the growth of bacteria and microorganisms by irradiating ultraviolet rays.

The ultraviolet lamp 127 is preferably mounted in a straight line shape inside the housing 121 in order to evenly irradiate ultraviolet rays into the interior of the housing 121.

The pre-processing unit 122 is installed on the inner upper side of the housing 121 to generate centrifugal force in the flow of washing water and synthetic resin, levitating the synthetic resin of recyclable plastics, and sinking the sediment to the bottom of the housing 121. Have them sit down.

This pre-processing unit 122 includes a case 121-1, a separation passage 122-2, a synthetic resin discharge pipe 122-3, and an impurity discharge pipe 122-4.

The case 121-1 is formed with a spiral flow path that generates centrifugal force by the flow of washing water and synthetic resin.

Washing water and pulverized synthetic resin supplied from the outside are supplied to the inside of the case 121-1.

The case 121-1 has a relatively small specific gravity and has an open top structure to allow recyclable synthetic resin to float. Accordingly, the floating matter floating on the water surface of the case 121-1 overflows and is discharged into the floating matter separation tank 121-2.

Inside the case 121-1, a partition wall 122-5 in the form of a mesh network is installed to separate only impurities toward the separation passage 122-2.

The separation passage 122-2 is formed inside the case 121-1 to separate impurities contained in the synthetic resin by centrifugal force.

The separation passage 122-2 is formed to be slanted downward and recessed at an end of the passage bottom surface of the case 121-1. Therefore, the impurities are pushed toward the separation passage 122-2 by the centrifugal force generated as the synthetic resin containing impurities passes through this spiral passage.

The synthetic resin discharge pipe 122-3 is installed on one side of the case 121-1 to discharge washing water and synthetic resin moving along the flow path.

The impurity discharge pipe 122-4 is connected to one side of the separation passage 122-2 and discharges the separated impurities into the sediment treatment unit 124.

In this way, when washing water and synthetic resin flow into the case 122-1, impurities contained in the synthetic resin are pushed outward by centrifugal force as they pass through the spiral flow path. At this time, impurities pass through the mesh-shaped partition wall 122-5 and fall into the separation channel 122-2, and the synthetic resin moves along the spiral-shaped channel. Additionally, the floating matter floating on the water surface of the case 122-1 overflows and is discharged into the floating matter separation tank 121-2.

Finally, the impurities are discharged through the impurity discharge pipe 122-4 and flow into the sediment treatment unit 124 to precipitate, and the synthetic resin is discharged through the synthetic resin discharge pipe 122-3 and falls into the cleaning unit 123.

In this way, the separation efficiency can be greatly improved through a pretreatment process in which the washing water and the pulverized synthetic resin are simultaneously introduced, the suspended matter contained in the synthetic resin is discharged to the outside using centrifugal force, and the precipitate is discharged to the sediment treatment unit.

The washing unit 123 is installed below the pre-treatment unit 122 and cleans the washing water while flowing a mixture of synthetic resin.

As shown in FIG. 7, the washing unit 123 includes a washing tank 123-1 with a synthetic resin discharge port 123-1a formed on one lower side, and is installed in the lower part of the washing tank 123-1 to remove washing water and impurities. It discharges to the outside and includes a drain pipe (123-2) equipped with a valve and a transfer screw (123-3) that transfers the synthetic resin discharged through the synthetic resin outlet (123-1a) to the drying unit (130). .

The washing tank 123-1 is preferably formed in a cone shape that becomes narrower toward the bottom.

According to this configuration, the synthetic resin that has been washed in the washing tank (123-1) is discharged to the synthetic resin outlet (123-1a) and transferred to the drying unit (130) by the transfer screw (123-3). And, wastewater generated during the cleaning process of synthetic resin is discharged to the sediment treatment unit 124 through the drain pipe 123-2.

Meanwhile, an impeller 123-4 that is rotated inside the washing tank 123 by driving a motor may be installed on one lower side of the washing tank 123. Therefore, the impeller (123-4) washes the synthetic resin while rotating the synthetic resin along with the washing water.

As shown in FIG. 7, the sediment disposal unit 124 is installed at the bottom of the washing unit 123 and discharges the sediment that has settled due to the difference in specific gravity to the outside. This sediment treatment unit 124 includes a sedimentation tank 124-1, a wastewater discharge pipe 124-2, and a sediment discharge pipe 124-3.

The settling tank 124-1 has a cone shape that becomes narrower toward the bottom. The sedimentation tank 124-1 accommodates wastewater discharged from the washing unit 123.

The wastewater discharge pipe 124-2 is installed on one side of the lower part of the sedimentation tank 124-1 to discharge wastewater. The wastewater discharge pipe 124-2 is for discharging wastewater contained inside the sedimentation tank 124-1 to the outside.

The sediment discharge pipe 124-3 is installed at the lower center of the sedimentation tank 124-1 to discharge sediment. The sediment discharge pipe 124-3 is for discharging sediment accumulated at the bottom of the sedimentation tank 124-1 to the outside.

Although not shown in the drawing, valves for blocking discharge and discharge are provided on one side of the wastewater discharge pipe 124-2 and the sediment discharge pipe 124-3, respectively.

The drying unit 130 may include a typical dehydrator and dryer. The dehydrator removes moisture remaining in the synthetic resin by centrifugal force while passing through a cylindrical case with multiple holes. Additionally, the drying unit may use a heating wire or blower.

Through the pre-processing unit 100, instead of washing and then pulverizing the synthetic resin, the pulverized synthetic resin is washed and then dried, which has the effect of allowing the synthetic resin to be easily cleaned regardless of its shape. In addition, since it is not washing synthetic resin having a large volume or size, but washing synthetic resin pulverized to a small size, there is an effect of miniaturizing the size of the pretreatment unit 100.

When the pretreatment unit 100 has the above-described configuration, foreign substances contained in the synthetic resin are removed, which has the effect of obtaining high-purity decomposed gas with a high content of oil components in the reaction unit 300.

Next, the reaction unit 300 of FIG. 3A will be described.

The reaction unit 300 is characterized in that it generates decomposition gas from the synthetic resin through polarization and vibration inside the molecule by applying microwaves to the synthetic resin. In other words, the synthetic resin is caused to vibrate by the wavelength generated from the microwave, and as the waves caused by the vibration collide with each other, the molecular chains of the synthetic resin are broken and decomposed.

Since synthetic resin can be decomposed in a microwave at a relatively low temperature, it has the effect of preventing the generation of dioxin, which is harmful to the environment.

In addition, since the indirect heating method in which high-temperature heat is applied from the outside of the reaction unit is not adopted, heat is not emitted to the outside, making it efficient in terms of thermal efficiency.

At this time, the reaction unit 300 dielectrically heats the synthetic resin to 60°C to 300°C using microwaves.

The reaction unit 300 is composed of a plurality of reaction units, and can be configured to heat the synthetic resin to a different temperature in each of the plurality of reaction units.

For this purpose, the reaction unit 300 is composed of a plurality of sections, and microwaves are output so that each of the plurality of sections can be heated to a different temperature, so that the attenuation and melting of the synthetic resin can be efficiently achieved. This is desirable.

That is, the reaction unit 300 is composed of a plurality of reaction units, and the microwaves can be configured to have variable output so that the synthetic resin is heated to different temperatures in each of the plurality of reaction units.

More specifically, as shown in FIG. 3, the reaction unit 300 may include a first reaction unit 310 and a second reaction unit 320. The first reaction unit 310, into which the synthetic resin is first introduced, may have a relatively lower temperature than the second reaction unit 320.

In the first reaction unit 310, the synthetic resin can be softened by a relatively low temperature, and in the second reaction unit 320, the softened synthetic resin can be vaporized to promote the generation of decomposition gas containing oil components. do.

The effect of preventing the synthetic resin from being carbonized by rapid heating by passing the synthetic resin through the first reaction unit 310 having a relatively low temperature and then passing through the second reaction unit 320 having a relatively high temperature. There is.

At this time, having a relatively low temperature means that the average temperature of the synthetic resin from the beginning to the end of the first reaction section 310 is relatively lower than the average temperature from the beginning to the end of the second reaction section 320. It can mean. However, this does not mean that the temperature from the beginning to the end of the first reaction unit 310 is always lower than that of the second reaction unit 320.

For example, the average temperature from the beginning to the end of the first reaction section 310 may be lower than the average temperature from the beginning to the end of the second reaction section 320, but some of the first reaction section 310 The location may have a temperature that is the same as or similar to the temperature of a portion of the second reaction unit 320.

Preferably, the first reaction unit 310 may have an average temperature of 60°C to 180°C, and the second reaction unit 320 may have an average temperature of 200°C to 300°C.

As the second reaction unit 320 has a relatively higher average temperature than the first reaction unit 310, the synthetic resin is melted in a more softened state, and the molten synthetic resin is vaporized and decomposed containing oil components. This has the effect of being able to produce gas stably.

Depending on the method, it is preferable that the second reaction unit 320 allows the synthetic resin to be heated again by microwaves while moving back and forth in a certain section to prevent the synthetic resin from being vaporized or melted.

In addition, when the synthetic resin that has not been vaporized or melted is configured to travel back and forth over a certain section, the softened synthetic resin and the melted synthetic resin are mixed inside the second reaction unit 320 and due to the shaking needle, the softened synthetic resin It has the effect of increasing the melting or vaporization efficiency.

More preferably, the first reaction unit 310 can be heated to a higher temperature from the beginning to the end where the synthetic resin is input by using the variable output of the microwave. This has the effect of gradually heating the synthetic resin and preventing the problem of the synthetic resin being scorched or carbonized before it softens.

As shown in FIGS. 3B to 3D, the reaction unit 300 consists of a plurality of reactors 311, and a microwave variable output device (microwave variable output device) is used to heat the synthetic resin to different temperatures in the plurality of reactors 311. Microwaves can be output variable through 330).

The safety device installed for safety when excessive gas is generated in the reaction unit 300 of the present invention is installed in an adjacent part of the connector in communication with the reactor 311 and is connected to the reactor 311 through the central server 10. Since it is possible to open and close portions of adjacent connectors, only one of the reactors 311 connected in parallel through the connector can be selectively used or all reactors 311 can be used. It is possible to either use it or not use it altogether.

The plurality of reaction furnaces 311 are, respectively, a round tubular insulating wall F2 adjacent to the outer surface of the internal round tubular refractory wall F1, and a horizontal tubular insulation wall F2 on the bottom of the refractory wall F1 and the insulating wall F2. A reactor 311 including a perforated plate (F3) arranged so as to form a plurality of perforations for supplying air, and a bottom plate (F4) spaced apart with a space forming an air layer below the perforated plate (F3). Includes.

The reaction furnace 311 includes a communication pipe communicating with a space forming an air layer; A fan installed in the flue pipe to supply air; A combustion unit connected to the reactor 311; It further includes a burner provided in the combustion section.

In addition, it is possible to thermally decompose the waste synthetic resin including the waste wires placed on the perforated plate F3 in the reactor 311 by direct heating by igniting it using a burner and a fan.

When the reactors 311 are connected in parallel through a connector, the reactors 311 connected in parallel through the connector can be circulated and used, and therefore, the waste including waste wires can be used within a set time range. Since the amount of thermal decomposition of synthetic resin can be increased, there is an advantage in improving productivity compared to the prior art.

In another embodiment, the plurality of reaction furnaces 311 include an internal round tubular refractory wall F1, a round tubular insulating wall F2 adjacent to the outer surface of the refractory wall F1, and a refractory wall F1. and a perforated plate (F3) disposed horizontally on the bottom of the insulation wall (F2) and forming a plurality of perforations for air supply, and a bottom plate (F4) spaced apart with a space forming an air layer below the perforated plate (F3). ) Other reactors (311) including; A communication pipe (11) communicating with the space forming an air layer; A fan installed in the flue pipe to supply air; A combustion section connected to the other reactor 311; It includes a burner provided in the combustion section, and it is possible to thermally decompose the waste synthetic resin including the waste wires placed on the perforated plate (F3) in the reactor 311 by direct heating by igniting it using the burner and the fan.

According to this, the amount of thermal decomposition of waste synthetic resin containing waste wires within the same time can be increased by pyrolyzing the waste synthetic resin containing waste wires piled on the perforated plate F3 in the reactor 311 by direct heating. Contributes to improving productivity.

The plurality of reaction furnaces 311 are arranged at intervals in the heating furnace, each consisting of an inner tube made of an internal fire-resistant wall (F1) and an outer tube made of an external insulating wall (F2) adjacent to the inner tube. It is heated indirectly by heat generated by a flame ignited in a combustion furnace installed in communication. According to this, when a plurality of reactors 311 are accommodated in the heating furnace, a plurality of other reactors placed outside and on standby can be circulated and used, and thus the heating furnace can continue to work in an uncooled state. Therefore, there is an advantage of improved productivity compared to the prior art.

In addition, since the heating furnace is continuously heated, it is possible to prevent the phenomenon of further fuel consumption due to raising the melting temperature again after cooling as in the prior art, which has the advantage of reducing fuel costs compared to the prior art.

In one embodiment, the reaction unit 300 includes an air supply device 312 that supplies external air; It further includes a sludge guiding member 313, which is a blade protruding from the inner wall in the form of a screw, and a sludge discharge port 314 through which the sludge guided through the sludge guiding member is discharged, and the inner surface of the reaction unit 300 Some are coated with aluminum on a ceramic support.

Therefore, the sludge is discharged along a live wire protruding in a spiral shape from the inner surface of the sludge discharge port 314, thereby enabling easy sludge induction.

For example, in the screw shape, spiral blades are formed on the blades, so that sludge is easily discharged by receiving force in a certain direction through rotation.

In particular, a plurality of 3 to 4 holes are formed on the spiral blade of the grinding blade or screw blade, and the holes are larger on the inlet side with a large outer diameter and smaller than the hole on the outlet side with a small outer diameter in proportion to the diameter of the spiral blade. It is formed so that the sludge particles overflow when contracted by the rotation of the screw, and then flow back through the hole and are pulverized.

The end of the screw shaft is further provided with a rectangular compression protrusion to add rotation and pressure to the shrunken sludge particles, thereby compressing the inside of the sludge formed within the reactor 311 to become hard.

The blade tip of the cutter maintains an angle of 85˚ to 90˚ with the axis of the shaft. The cutter may further be provided with an auxiliary blade having 2 to 3 protrusions on the blade.

As shown in FIG. 3C, the reaction unit 300 includes one to a plurality of non-ignition burners 321; And, it further includes an accident prevention department (322).

Specifically, the accident prevention unit 322 includes a pressure gauge 323; Emergency discharge pipe (324); Open/close control valve (325); Including a control device 326, the one to plural emergency ignition burners 321 ignite when gas is discharged from the emergency discharge pipe and completely burn the discharged gas.

That is, the one to plural non-ignition burners 321 are formed adjacent to the passage through which gas moves from the reaction unit 300 to the separation unit 400, and are ignited when gas is discharged from the emergency discharge pipe. The exhausted gas is completely burned.

The accident prevention unit 322 prevents expected accidents when gas higher than the standard pressure moves through the flow path.

For example, the accident prevention unit 322 is installed in the flow path through which gas moves from the reaction unit 300 to the separation unit 400 and is electrically connected to the control device 326 to measure pressure (a pressure gauge ( 323); an emergency discharge pipe 324 capable of discharging gas from the interior of the flow path; An opening/closing control valve (325) that controls opening and closing according to the amount of gas discharged from the emergency discharge pipe; It is configured to include a control device 326 that controls the opening/closing control valve to open the emergency discharge pipe when an abnormal signal is received from the pressure gauge.

Hereinafter, the supply unit 200 will be described.

The supply unit 200 may include a storage tank that receives the synthetic resin pretreated in the pretreatment unit 100 and temporarily stores it, and a conveyor unit that supplies the synthetic resin stored in the storage tank to the reaction unit 300. Since the conveyor unit may include any device capable of moving synthetic resin, detailed description will be omitted. Since the storage tank is disposed between the pretreatment unit 100 and the conveyor unit, it has the effect of shortening the supply waiting speed at which the pretreated synthetic resin is supplied to the reaction unit 300.

A catalyst that increases the decomposition efficiency of synthetic resin is further added to the supply unit 200 and supplied to the reaction unit together with the synthetic resin, and the catalyst is formed as a dielectric heating element heated by microwaves.

Below, the catalyst will be described.

A catalyst that increases the decomposition efficiency of the synthetic resin is further added to the supply unit 200 and supplied to the reaction unit 300 together with the synthetic resin.

The catalyst may be added to the storage tank of the supply unit 200.

Since the above catalyst can emit strong light wave energy such as infrared rays, it can increase the decomposition efficiency of synthetic resin along with microwaves. In other words, since the combination of light wave energy and microwaves can easily break the carbon bonds of synthetic resin, it is possible to efficiently obtain decomposed gas containing oil components.

Preferably, the catalyst includes biotite particles, zinc oxide particles, titanium dioxide particles, magnetite particles, silica particles, and hematite particles.

As heated by microwaves, different light wave energies are emitted along with minute vibrations from each particle contained in the catalyst, and the different light wave energies interfere with each other due to the minute vibrations, breaking the molecular chains of the synthetic resin. Trimming causes the molecular ring to separate. In other words, when the catalyst is composed of materials having different optical wave energies, the decomposition efficiency of synthetic resin can be further increased.

In another aspect, the catalyst acts as a dielectric heating element, rapidly mixing molten synthetic resin and solid synthetic resin, thereby expanding the heat transfer area, which has the effect of preventing coking.

The content of the particles constituting the catalyst can be easily adjusted according to those skilled in the art, but most preferably, the catalyst contains 20 to 40% by weight of biotite particles, 10 to 15% by weight of zinc oxide particles, and 20 to 30% by weight of titanium dioxide particles. By weight%, it is composed of 5-15% by weight of magnetite particles, 5-15% by weight of silica particles, and 5-15% by weight of hematite particles, which not only improves the decomposition efficiency of synthetic resin, but also reduces oxygen contained within the molecules of catalyst particles. Chlorine generated from the decomposing synthetic resin can react.

For example, in the case of zinc oxide, a reaction as shown in Chemical Formula 1 below may occur.

In other words, the catalyst neutralizes or removes chlorine that may be generated from the decomposition of synthetic resin, suppresses the production of low-quality oil due to organic decomposition and recombination of chlorine, and has the effect of obtaining high-quality oil in high yield.

Hereinafter, the separation unit 400 will be described.

When explained with reference to FIGS. 4 and 5, the separation unit 400 includes a primary separation unit 410 that separates moisture from gas by primary cooling; It is characterized in that it includes a secondary separation unit 420 that secondarily cools the gas that has passed through the primary separation unit 410 and separates the liquefied oil from the gas.

More specifically, the primary separation unit 410 may be configured to include a primary cooling unit 411 and a primary storage tank 412.

That is, the primary cooling unit 411 cools the decomposed gas supplied from the reaction unit 300 by heat exchange to liquefy (condense) the moisture contained in the decomposed gas.

That is, moisture can be liquefied and separated from the decomposed gas through the heat exchange process of the primary cooling unit 411.

After the primary storage tank 412 is supplied with liquefied moisture (liquefied water) and uncondensed gas (gas without moisture) by the primary cooling unit 411, the liquefied water is sent to the wastewater collection unit (not shown). The gas that is not liquefied (gas that does not contain moisture) is discharged to the city) and is supplied to the secondary separation unit (420).

In a similar principle, the secondary separation unit 420 may be configured to include a secondary cooling unit 122-1 and a secondary storage tank 122-2.

Gas containing oil components may be liquefied through the secondary cooling unit 122-1 to obtain oil. That is, the oil component contained in the non-liquefied gas is liquefied through the secondary cooling unit (122-1), the oil is supplied to the secondary storage tank (122-2), and the gas is stored in the gas storage tank (not shown). ) is stored in At this time, liquefied water may be discharged from the gas storage tank (not shown) to a wastewater collection unit (not shown).

At this time, as shown in Figure 5, the secondary separation unit 420 may be composed of a plurality. This is because the boiling point of unliquefied gas (gas without water) is low, so gas that is not liquefied into oil may exist, so it is composed of multiple units to obtain oil at high yield.

As the separation unit 400 includes a primary separation unit 410 and a secondary separation unit 420, a large amount of moisture contained in the cracked gas is separated, thereby preventing the condensed oil from containing a large amount of moisture. It has the effect of preventing it.

Before explaining the filter unit 500, between the separation unit 400 and the filter unit 500, the oil separated from the separation unit 400 is stably scattered on the filter unit 500, so that the filter unit ( It is desirable to further include an inlet auxiliary part (not shown) that allows for even distribution and entry into the 500). For example, the inlet auxiliary part (not shown) is configured in an angle shape, and has a spiral guide rib protruding from the inner surface, so that the oil supplied from the separator 400 can be supplied in all directions of the filter part 500 by centrifugal force. It is desirable to do so. However, it is not limited to this and can be easily changed by those skilled in the art.

Hereinafter, the filter unit 500 will be described.

The filter unit 500 filters the oil separated in the separation unit 400.

Here, filtering refers to filtering out impurities contained in the oil, making it possible to obtain oil of high purity.

More preferably, the filter unit 500 includes a first filter unit 510; second filter unit 520; and a third filter unit 530.

Most preferably, the first filter unit 510; second filter unit 520; The third filter unit 540 has the effect of adopting a stacked structure in which the filtered oil is stacked sequentially from top to bottom, allowing the filtered high-purity oil to be stably collected in the storage unit 600.

The first filter unit 510 performs a function of demonstrating filter performance of 5 mm or more, and the first filter unit 510 may be made of porous mineral or gravel.

The second filter unit 520 performs a function of generating a filtering effect between 0.1 and 1 mm for the primary reduced oil that has passed through the first filter unit 510. In this case, it is preferable that the second filter unit 520 uses a material with a smaller particle size than the first filter unit 510, such as sand or white clay.

More preferably, the second filter unit 520 may be composed of 30 to 40% by weight of sand, 15 to 30% by weight of white clay, 15 to 25% by weight of charcoal, and 10 to 20% by weight of red clay, so that the oil It is desirable to ensure optimal filtration of trace amounts of gum or carbonized substances contained therein.

The third filter unit 530 performs a function of generating a filtering effect for the secondary reduced oil that has passed through the second filter unit 520 between 1 and 5 ㎛. In this case, the third filter unit 530 can be configured to be in powder form.

Preferably, the third filter unit 530 obtains high-purity tertiary reduced oil, and contains 30 to 45% by weight of calcined shell powder capable of adsorbing impurities, 15 to 30% by weight of zeolite powder, and 15 to 25% by weight of expanded graphite powder. % by weight, it can be composed of a composition containing 10 to 20% by weight of activated carbon powder, so that optimal filter performance can be achieved.

The calcined shell powder, zeolite powder, expanded graphite powder, and activated carbon powder have a structure in which pores are formed within the particles or are capable of exhibiting antibacterial properties. As the oil collides with the holes in the powder particles, it has the effect of easily adsorbing impurities attached to carbon rings in the oil.

In addition, the antibacterial performance has the effect of ensuring that the third filter unit 530 is not contaminated by bacteria and can exert filter performance for a long period of time.

Additionally, as mentioned above, the reduced oil that has passed through the filter unit 500 is stored in the storage unit 600.

In addition, it may include a filter unit 500 whose cut surface is bent in a zigzag manner and a frame that supports the filter unit 500 from the outside.

The filter unit 500 is preferably made of wool material to facilitate cleaning. However, since this is only an example, the filter unit 500 may be made of various materials suitable for cleaning work.

For example, the filter unit 500 may have a zigzag shape in which a plurality of straight folded parts are formed.

Because the contact area between the filter unit 500 and the oil is expanded by the alternating shape of the straight folded portions, sludge removal is more efficient.

The frame is formed to support a plurality of the filter units 500.

For example, the grid packing frame may be disk-shaped or may vary depending on the shape of the filter unit 500. The grid packing is divided into left and right ends in a half-moon shape for convenience of installation and detachment during cleaning work.

The random packing of the frame may include a support body formed in a cylindrical shape and a plurality of filters extending from the inner surface of the support body toward the center.

The random packing can be formed to be smaller and lighter than the grid packing. Therefore, since the random packing is easier to clean than the grid packing, it is preferable to use it in areas where a lot of sludge is collected and frequent cleaning is required.

Meanwhile, as shown in FIGS. 9 and 10, the present invention may further include a history module 50 that stores details of foreign substances in recycled plastic, statistically analyzes the amount of foreign substances, and calculates an average value.

Details of foreign substances in recycled plastic can be inputted by accessing the memory stored in the transport truck or mobile device, and can be inputted and stored separately through an individual portable storage device.

It also includes an impurity ratio information receiving unit 40 that receives impurity ratio information including information on the maximum impurity ratio that can be recycled depending on the type of main ingredient and the type of impurity ingredient from the central server 10.

The central server 10 is connected to the preprocessing unit 100 to control the preprocessing state in an integrated manner, and is connected to the accident prevention unit 322 through a network to receive, store, and transmit the accident prevention situation in real time to the manager.

100: Preprocessing unit
110: Grinding unit
120: Separate discharge unit
130: Drying unit
140: External discharge unit
200: Supply department
300: reaction unit
310: first reaction unit
320: second reaction unit
400: separation part
410: primary separation unit
420: Secondary separation unit
500: Filter unit
510: first filter unit
520: Second filter unit
530: Third filter unit
600: storage unit

Claims (10)

A pretreatment unit 100 that preprocesses the collected synthetic resin to obtain a synthetic resin from which impurities have been removed;
a supply unit 200 that supplies the synthetic resin pretreated in the pretreatment unit 100 to the reaction unit;
A reaction unit 300 that heats the synthetic resin supplied from the supply unit 200 to generate decomposed gas containing oil components;
A separation unit 400 that cools the cracked gas supplied from the reaction unit 300 and then separates the oil;
A filter unit 500 that filters the oil separated in the separation unit 400;
An oil reduction system of synthetic resin, characterized in that it includes a storage unit 600 that stores the reduced oil filtered in the filter unit 500. In claim 1,
The reaction unit 300 is composed of a plurality of reaction furnaces, and the oil reduction system for synthetic resin is characterized by variable output of microwaves so that the synthetic resin is heated to different temperatures in the plurality of reaction furnaces. In claim 2,
A catalyst that increases the decomposition efficiency of synthetic resin is further added to the supply unit 200 and supplied to the reaction unit together with the synthetic resin, and the catalyst is formed as a dielectric heating element heated by microwaves. An oil reduction system for synthetic resin. In claim 2,
The separation unit 400 includes a primary separation unit 410 that separates moisture from the gas by primary cooling; A secondary separation unit 420 that separates liquefied oil from the gas by secondary cooling the gas that has passed through the primary separation unit. An oil reduction system of synthetic resin, comprising a. In claim 4,
The reaction unit 300 includes an air supply device 312 that supplies external air; It further includes a sludge guiding member 313, which is a blade protruding from the inner wall in the form of a screw, and a sludge discharge port 314 through which the sludge guided through the sludge guiding member is discharged, and the inner surface of the reaction unit 300 Oil reduction system of synthetic resin, some of which are coated with aluminum on a ceramic support. In claim 1,
The filter unit includes a filter unit composed of a composition containing 30 to 45% by weight of calcined shell powder, 15 to 30% by weight of zeolite powder, 15 to 25% by weight of expanded graphite powder, and 10 to 20% by weight of activated carbon powder. Oil reduction system of synthetic resin In claim 1,
The reaction unit 300 includes one to a plurality of non-ignition burners 321 formed adjacent to a flow path through which gas moves from the reaction unit to the separation unit; And, it further includes an accident prevention unit 322 that prevents an accident expected when gas higher than the standard pressure moves through the flow path, wherein the accident prevention part is installed in the flow path and measures the pressure (323). ); an emergency discharge pipe 324 capable of discharging gas from the interior of the flow path; An opening/closing control valve (325) that controls opening and closing of the emergency discharge pipe; It is configured to include a control device 326 that controls the opening/closing control valve to open the emergency discharge pipe when an abnormal signal is received from the pressure gauge, and the one to plurality of non-ignition burners 321 are configured to operate the emergency discharge pipe. An oil reduction system made of synthetic resin, characterized in that it ignites when gas is discharged from the gas and completely burns the discharged gas. In claim 1,
The preprocessing unit 100 includes a grinding unit 110 that grinds the synthetic resin to a certain size; A separation discharge unit 120 installed at the lower part of the grinding unit 110 to wash the synthetic resin pulverized by the grinding unit 110 and separate and discharge suspended matter and sediment generated during the washing process; A drying unit 130 that dehydrates and dries the synthetic resin separated after washing in the separation and discharge unit 120; An oil reduction system for synthetic resin, characterized in that it includes a discharge unit 140 installed on one side of the drying unit 130 to discharge the dried synthetic resin to the outside. In claim 8,
The separation and discharge unit 120 is an oil reduction system of synthetic resin, characterized in that it includes a housing 121, a pretreatment unit 122, a cleaning unit 123, and a sediment treatment unit 124. In claim 9,
The housing 121 is an oil reduction system for synthetic resin, characterized in that it is provided on one side with an inlet 121-1 through which washing water and pulverized synthetic resin flows, and a separation space where suspended matter and sediment are separated.