WO2022239902A1

WO2022239902A1 - Apparatus for producing oil with waste synthetic resin

Info

Publication number: WO2022239902A1
Application number: PCT/KR2021/007048
Authority: WO
Inventors: 이병삼
Original assignee: 이병삼
Priority date: 2021-05-14
Filing date: 2021-06-04
Publication date: 2022-11-17
Also published as: KR20220154909A

Abstract

An apparatus for producing oil with waste synthetic resin according to the present invention comprises: a melting furnace for melting solid waste synthetic resin by impregnating same in a high-temperature oil; and a foreign substance removal facility for removing foreign substances such as metals from the waste synthetic resin melt supplied from the melting furnace. A main body constituting the foreign substance removal facility is provided with three stages of sedimentation plates, and foreign substances are removed from the waste synthetic resin melt by disposing the three stages of sedimentation plates in such a manner that the waste synthetic resin melt flows while overflowing and colliding between the three stages of sedimentation plates. The waste synthetic resin melt from which foreign substances are removed passes through a water pipe type heat exchanger constituting a heater for heat exchange. The heat required for heat exchange is supplied from a hot stove. The waste synthetic resin melt is heated up to a temperature suitable for thermal decomposition while passing through the water pipe type heat exchanger, and is then put into a pyrolysis furnace to be subjected to pyrolytic decomposition. Combustible gas components and oil vapor containing oil components are obtained by conducting the pyrolytic decomposition of the waste synthetic resin melt, and are sent to a cooler and cooled to obtain a desired oil.

Description

Waste synthetic resin emulsification device

The present invention relates to an emulsification device that produces renewable energy by thermally decomposing waste synthetic resin and converting it into oil and combustible gas, and more particularly, by impregnating solid waste synthetic resin in high-temperature oil and stirring it to form a melt of waste synthetic resin, The chlorine component and foreign substances contained in it are removed, and the melt is quickly raised in temperature using a water tube heat exchanger, and then put into a thermal decomposition furnace to convert the melt into oil and gas components. It relates to an emulsification device for waste synthetic resin that can minimize the energy required for thermal decomposition by recirculating the furnace.

In general, waste synthetic resin, which is generated a lot in household waste or industrial waste, is treated by incineration or landfill. When high-temperature heat of about 500℃ is applied, the high-carbon molecular ring is broken and converted into oil or combustible gas with a low-carbon molecular ring. It is being studied a lot.

Therefore, as a method or device for emulsifying the waste synthetic resin, after filling the inside of the horizontal cylindrical pyrolysis furnace with the waste synthetic resin and sealing it, direct flame heat is applied from the outside of the pyrolysis furnace or inside the pyrolysis furnace by using an electric heater or a heat-generating ceramic. There is a fixed cylindrical pyrolysis method in which the generated heat is applied to pyrolyze the waste synthetic resin in the pyrolysis furnace and convert it into oil and combustible gas. There is a rotary kiln-type pyrolysis method that induces

In addition, a fluidized bed of sand is formed at the bottom of the vertical cylinder pyrolysis furnace, and high-temperature inert gas (mainly nitrogen gas is used a lot) of 400 ° C to 500 ° C is blown at high pressure at the bottom of the fluidized bed to raise the temperature and flow the fluidized sand to a high temperature to form a fluidized bed. Then, there is a fluidized bed pyrolysis method in which waste synthetic resin pulverized into a size of 4 cm or less is continuously injected into the formed fluidized bed to quickly pyrolyze and continuously convert it into oil and combustible gas.

On the other hand, there is a melting pyrolysis method in which pulverized solid waste synthetic resin is continuously impregnated in high-temperature oil while stirring and melted to form a molten liquid, and then the molten liquid is continuously pyrolyzed in a pyrolysis furnace to continuously convert into oil and combustible gas.

First, the cylindrical pyrolysis method is a method in which a cylindrical pyrolysis furnace is filled with waste synthetic resin, sealed, and then heat is applied from the outside or inside to pyrolyze the waste synthetic resin inside the pyrolysis furnace. It takes about 30 to 40 minutes to reach it, especially in the temperature rising section where the temperature rises to 250 ° C to 350 ° C, the high carbon molecular ring of about C ₈₀₀ to C ₂₀₀₀ in some waste synthetic resins contains C ₃₀ to C ₅₀ molecules of the oil component It is not thermally decomposed into a ring and a combustible gas component, C ₃ to C ₈ molecular ring, but thermally decomposed into wax or grease, which is a C ₂₀₀ to C ₄₀₀ molecular ring. After the post-cylindrical pyrolysis furnace cools down, the ash that has not been pyrolyzed is taken out, and the waste synthetic resin is filled again to raise the temperature to a high temperature to operate the pyrolysis operation, so there is a disadvantage that continuous operation is not possible.

In addition, the fluidized bed pyrolysis furnace method has the advantage of continuously inputting waste synthetic resin and continuously pyrolyzing it, but requires a pretreatment facility to grind the waste synthetic resin to 4 cm or less, and when the fluidized sand collides with each other, it is pulverized and atomized. Dust is discharged along with the recovered oil, clogging the piping of the oil recovery cooling condenser, and the recovered oil contains dust, making it difficult to produce good quality oil. It is difficult to process, and the efficiency of reusing fluidized sand is low.

compared to these. The melt pyrolysis method is an excellent pyrolysis method for waste synthetic resin that enables continuous operation, no wax generation, and can recover high-quality oil. However, there are many technical problems to be solved, such as a device for removing unmelted foreign substances such as aluminum foil contained in the melted waste synthetic resin, and the melt must be able to reach the pyrolysis temperature in a short time.

The present invention is to solve and supplement various problems caused by the prior art as described above, and an object of the present invention is to impregnate and stir the waste synthetic resin in high-temperature oil when melting the solid waste synthetic resin and melt it, An object of the present invention is to provide an apparatus for emulsifying waste synthetic resin capable of reducing energy consumption costs by using a melted waste synthetic resin melt.

Another object of the present invention is to provide a foreign matter removal facility equipped with a three-stage gravity settling plate, on the one hand, in order to remove foreign substances contained in the waste synthetic resin melt, and on the other hand, through the foreign matter removal facility, the foreign matter contained in the waste synthetic resin An object of the present invention is to provide an apparatus for emulsifying waste synthetic resin capable of recovering high-quality oil by performing desalination to remove chlorine gas.

Another object of the present invention is to raise the temperature of the waste synthetic resin melt in a quick time using a water-tube heat exchange heating method from the outside of the pyrolysis furnace, and then pyrolyze the waste synthetic resin melt in the pyrolysis furnace to suppress the generation of wax generated in the low temperature section. It is to provide an emulsification device for synthetic resin.

Another object of the present invention is to neutralize chlorine gas generated during desalination in a foreign matter removal facility with an alkali chemical in a liquid cleaning device, and convert the melted waste synthetic resin into oil vapor and combustible gas in a pyrolysis furnace, and then use an oil recovery cooling condenser to An object of the present invention is to provide an apparatus for emulsifying waste synthetic resin that can reduce the use of thermal energy by recovering oil vapor and using combustible gas as combustion fuel for a hot stove.

The waste synthetic resin emulsification apparatus according to the present invention includes a melting furnace for receiving solid waste synthetic resin and high-temperature oil and impregnating the solid waste synthetic resin into the high-temperature oil to melt the solid waste synthetic resin;

Heat exchange occurs between a heater including a water-tube heat exchanger in which heat is exchanged while the molten waste synthetic resin supplied from the melting furnace passes, and the molten waste synthetic resin passing through the water-tube heat exchanger by supplying high-temperature hot air to the heater. a heating facility including a hot air stove for raising the temperature of the waste synthetic resin melt to a temperature suitable for thermal decomposition; and

and a thermal decomposition furnace for converting the waste synthetic resin melt supplied from the heating facility into oil vapor and combustible gas components by thermally decomposing the waste synthetic resin melt heated to a temperature suitable for thermal decomposition.

According to one feature of the waste synthetic resin emulsification apparatus of the present invention, energy saving can be achieved by transferring a part of the waste synthetic resin melt existing in the pyrolysis furnace as high-temperature oil to the melting furnace for use.

According to another feature of the present invention, the melting furnace further includes an agitator, which promotes melting of the solid waste synthetic resin by stirring the high-temperature oil and the solid waste synthetic resin supplied to the melting furnace.

According to another feature of the present invention, a foreign matter removal facility is further formed, which includes a box-shaped body, a hopper integrally formed in the body, an inlet pipe for introducing the waste synthetic resin melt from the melting furnace, and a waste synthetic resin It includes a foreign matter conveying means for removing foreign matter contained in the melt and deposited on the bottom surface of the hopper. In addition, first, second, and third settling plates are disposed in the main body in order in a horizontal direction from left to right, and the settling plates are disposed until the waste synthetic resin melt introduced through the inlet pipe is discharged while flowing inside the main body. By arranging the synthetic resin melt to flow while overflowing and colliding between the three-stage settling plates, it is possible to remove heavy foreign substances such as metal, light but rough foreign substances such as aluminum foil, and/or fine floating substances.

According to another feature of the present invention, the foreign matter removal facility further includes an outer wall for forming a double jacket structure in the main body by entirely surrounding the outside of the main body, and supplying high-temperature exhaust gas discharged from the heating facility to the double jacket. The chlorine gas contained in the waste synthetic resin melt can be desalinated by raising the temperature of the waste synthetic resin melt flowing through the main body.

According to another feature of the present invention, the water tube heat exchanger of the heater includes a pair of headers, and a plurality of pipes disposed spaced apart from each other so that both ends are connected and communicated between the pair of headers. Therefore, the molten waste synthetic resin supplied from the melting furnace undergoes heat exchange between the pair of headers of the water tube heat exchanger and the high-temperature hot air supplied from the hot air furnace while passing through the inside of the pipes. The temperature of the waste synthetic resin melt is rapidly raised to a temperature suitable for extracting the oil component from the synthetic resin melt.

According to another feature of the present invention, the heater including the water-tube heat exchanger is configured separately from the pyrolysis furnace, and the waste synthetic resin melt is rapidly raised to a temperature suitable for pyrolysis through the water-tube heat exchanger and then introduced into the pyrolysis furnace Since thermal decomposition proceeds, it is possible to obtain oil vapor or combustible gas for conversion to oil by stable thermal decomposition.

first. The melt of waste synthetic resin obtained by continuously inputting solid waste synthetic resin into a melting furnace and impregnating it in high-temperature oil can be converted into oil and combustible gas by thermal decomposition, enabling continuous operation.

second. Costs and heat energy required for producing high-temperature oil can be reduced by reusing some of the heated (ie, high-temperature) waste synthetic resin melt instead of high-temperature oil used to quickly and easily melt solid waste synthetic resin in a melting furnace.

third. The waste synthetic resin melt, which is primarily melted in the melting furnace, passes through the three-stage sedimentation plate provided in the main body of the foreign matter removal facility, removing foreign substances (heavy or light metallic and fine floating foreign substances). A demineralization process that volatilizes the components can be performed in parallel, so that high-quality oil can be recovered.

fourth. The waste synthetic resin melt from which foreign substances and chlorine components have been removed is rapidly raised to the pyrolysis temperature through a water-tube heat exchanger installed separately from the pyrolysis furnace and thermally decomposed, thereby minimizing the generation of wax generated during low-temperature pyrolysis.

1 is an overall configuration diagram schematically illustrating an apparatus for emulsifying waste synthetic resin according to an embodiment of the present invention.

Figure 2 is a view showing the structure of the melting facility in the emulsification device of Figure 1 in more detail.

3 is a partial cross-sectional view intensively showing a foreign matter removal facility in the emulsification device of FIG. 1;

4 is a view showing a heating facility, a thermal decomposition facility, and a circulation facility, in particular, in the emulsification device of FIG. 1.

The present invention will be described in detail with reference to the drawings below.

Referring to FIG. 1, the waste synthetic resin emulsification device according to an embodiment of the present invention includes a melting facility 100, a foreign matter removal facility 200, a heating facility 300, a pyrolysis facility 400, and a circulation facility ( 500) are included.

The emulsification device additionally includes a chemical liquid cleaning device 600 for treating exhaust gas as needed, an oil recovery cooling condenser 700 for recovering oil by gas-liquid separation of pyrolyzed oil vapor and combustible gas, and an oil storage tank 701 may further include.

Figure 2 is a view showing the structure of the melting facility in the emulsification device of Figure 1 in more detail. The cylindrical melting furnace 101 constituting the melting facility 100 is formed at an upper point and has an inlet 102 for introducing pulverized solid waste synthetic resin into the melting furnace 101, and formed at another upper point. It includes a transfer pipe 103 for injecting the high-temperature melted waste synthetic resin transferred from the pyrolysis furnace 401 (see FIG. 4). And, a discharge valve 104 capable of discharging the waste synthetic resin melt is attached to the lower part of the melting furnace 101.

On the other hand, the melting facility 100 is provided with an agitator 105 extending into the melting furnace 101 through a point at the top of the melting furnace 101 and installed. This is to rapidly obtain a desired melt of waste synthetic resin by accelerating the melting of the solid waste synthetic resin by mixing and stirring the waste synthetic resin and the liquid high-temperature oil or high-temperature waste synthetic resin melt. In general, it is known that the melting temperature required to impregnate and melt the waste synthetic resin using high-temperature oil is about 170°C to 200°C.

As shown separately on the right side of FIG. 2, the agitator 105 includes a motor 106 and a reducer 107 installed exposed to the outside of the melting furnace 101, and a shaft disposed inside the melting furnace 101 ( 108) and stirring blades 109. The stirring blades 109 are installed at the end of a shaft 108 extending and disposed inside the melting furnace 101, and a cap 111 with a plurality of holes 110 is wrapped around the stirring blades 109 as a whole. while being fixed to the shaft 108. The rotation of the motor 106 is transmitted to the shaft 108 and the stirring blades 109 to cause rotation, and by this rotation, the waste synthetic resin (solid waste synthetic resin and liquid high-temperature oil or high-temperature waste synthetic resin melt) At this time, since the cap 111 surrounds the stirring blades 109, the solid waste synthetic resin that has entered the cap 111 is cut while the stirring blades 109 rotate as if brushing the surface of the cap 111. . In addition, the cap 111 prevents the solid waste synthetic resin from being wrapped around the stirring blades 109 and forming lumps.

In addition, it is preferable to install the agitator 105 at an angle, which means that when the agitator blades 109 are installed horizontally, when the waste synthetic resin is melted, a lump of waste synthetic resin that is in a solid state or has not yet been properly melted is wound around the agitator blades 109 or This is to prevent sticking.

3 is a partial cross-sectional view intensively showing a foreign matter removal facility in the emulsification device of FIG. 1; It should be understood that foreign matter removal herein includes both physical and chemical matters.

First, looking at the physical aspect, that is, the structural aspect, the foreign matter removal facility 200 includes a main body 201 including a hopper 203 formed at the bottom of a box-shaped container, and a cover on the upper opening of the main body 201. It includes an upper plate 202 installed in the form, and a foreign matter conveying facility 204 formed across the bottom surface of the hopper 203, and the main body 201 is made of a closed structure to the extent that gas does not leak as a whole. The foreign matter transfer facility 204 is composed of foreign material transfer means including a conveyor, a collection box, and the like.

On the other hand, a first settling plate 205 is provided inside the main body 201 at a predetermined distance from the wall of the main body 201 facing the opposite side. wide surface) along the wall surface of the main body 201 facing the body 201 and is disposed to extend horizontally. In this case, the extension length may be extended by a certain length so as to contact the other two wall surfaces of the main body 201 or not to touch the other two walls of the main body 201 . The horizontal extension length of the first settling plate 205 is also applied to the horizontal extension length of each of the second and

third settling plates

206 and 207 described later. In addition, each of the first, second, and

third settling plates

205, 206, and 207 may have different horizontal extension lengths.

The lower surface (lower part) of the first sedimentation plate 205 is fixed to the bottom surface of the hopper 203, and the free end (upper part or upper surface) of the first sedimentation plate 205, which is not fixed, is an inlet pipe 208 to be described later. And bent at a right angle as a whole toward the wall of the body 201 close to it, so the cross-sectional shape is generally L-shaped. Of course, the free end portion may be bent while maintaining a gentle curved shape. In this way, the upper surface (free end) of the first settling plate 205 is spaced apart from the upper plate 202 of the main body 201.

The second settling plate 206 is disposed at a predetermined distance from the first settling plate 205, and the upper surface of the second settling plate 206 is fixed to the upper plate 202 of the main body 201 and is free from being fixed. The end (bottom surface) is spaced apart from the bottom surface of the hopper 203 by a certain distance without a folded (bent) portion. Accordingly, the second settling plate 206 has a flat plate shape as a whole and takes on the shape of the letter “1”.

The third settler plate 207 is disposed at a predetermined distance from the second settler plate 206, and its shape and arrangement are generally the same as those of the first settler plate 205. In this way, in one embodiment of the present invention, the foreign matter removal facility 200 is configured with a three-stage sedimentation plate structure.

In addition, the body 201 of the foreign matter removal facility 200 is provided with an inlet pipe 208 for receiving the melted waste synthetic resin from the melting furnace 101, and the inlet pipe 208 is the horizontal surface of the first settling plate 205. It is disposed between the wall surface of the main body 201 and the first settling plate 205 facing each other. The inlet pipe 208 penetrates the upper plate 202 of the main body 201 and is disposed to extend a certain length downward along the wall surface of the main body 201, preferably a discharge point (discharge port) of the inlet pipe 208. It is preferable to install it so that it comes down to the entrance of the silver hopper 203. That is, it is preferable to extend the length of the inlet pipe 208 so that discharge of the inlet pipe 208 occurs at the inlet of the hopper 203 .

The operating principle of the foreign matter removal facility 200 will be looked at. In general, foreign substances contained in the waste synthetic resin melt introduced from the melting furnace 101 to the foreign matter removal equipment 200 settle on the bottom surface of the hopper 203 integrally formed in the main body 201 due to its own weight or roughness. However, there is a clear limit to removing foreign substances contained in the waste synthetic resin melt by relying only on the physical properties of the foreign substances themselves, such as dead weight or roughness.

In order to overcome these limitations, the foreign matter removal facility 200 according to one embodiment of the present invention is provided with

sedimentation plates

205, 206, and 207. The molten waste synthetic resin melt supplied from the melting furnace 101 is introduced into the main body 201 through the inlet pipe 208, and discharge from the inlet pipe 208 occurs near the inlet of the hopper 203. The melted waste synthetic resin discharged from the inlet pipe 208 is pushed down to the bottom of the hopper 203 of the main body 201 due to the discharge pressure and then rises. At this time, metal components such as iron and copper contained in the melted waste synthetic resin The heavy materials of are settled to the bottom surface of the hopper 203, while light but rough foreign materials such as aluminum foil and wood chips rise together with the waste synthetic resin melt and try to flow over the first settling plate 205. When overflow occurs in this way, since the free end (upper end) of the first settling plate 205 is bent, light but rough foreign substances are caught on the horizontal plate among the curved parts, that is, generally L-shaped settling plate 205, and do not overflow , and sinks to the bottom surface of the hopper 203 on the vertical plate.

In this way, the waste synthetic resin melt that overflows after primarily heavy or coarse foreign substances are removed collides with the second settling plate 206 and descends to the bottom (bottom surface) of the hopper 203. At this time, in order to maintain strength during plastic manufacturing, Inorganic substances such as calcium and magnesium, which are the main components of the filler used as auxiliary raw materials, collide with the second settling plate 206 in inertia and are separated from the waste synthetic resin melt. When the remaining waste synthetic resin melt separated from inorganic materials flows through the free space under the second settling plate 206 together with the separated inorganic materials, the inorganic materials settle on the bottom surface of the hopper 203, and then the foreign matter conveying equipment 204 It is removed from the foreign matter removal facility 200 by.

The melted waste synthetic resin that has passed through the second settling plate 206 meets the third settling plate 207 again, and at this time, fine floating foreign substances contained in the melted waste synthetic resin that have not yet been removed are separated from the first settling plate 205 and the second settling plate 205. According to the same removal principle, it is finally separated while flowing through the third sedimentation plate 207.

In this way, various foreign substances contained in the waste synthetic resin melt and separated by the three settling

plates

205, 206, and 207 installed on the main body 201 of the foreign matter removal facility 200 are separated from the bottom surface of the hopper 203. It is collected in, and the foreign substances collected in this way are discharged from the foreign matter removal facility 200 by the foreign matter transport facility 204.

Now, looking at the chemical aspect of the foreign matter removal facility 200, as described above, the main body 201 is designed to be airtight so as not to leak gas as a whole. Furthermore, the main body 201 further includes an outer wall for forming a double jacket 209 structure by entirely surrounding the outside of the main body 201 . The high-temperature exhaust gas discharged from the heater 307 is supplied to the double jacket 209 thus formed to raise the temperature of the waste synthetic resin melt flowing inside the main body 201. In one embodiment of the present invention, desalination of chlorine gas is performed. It is operated from 230℃ to 280℃, which is the temperature required for

Since the desalinated chlorine gas is an air pollutant, it is neutralized and treated using an alkali chemical solution in the chemical liquid cleaning device 600. In addition, the high-temperature exhaust gas introduced to raise the temperature of the waste synthetic resin melt flowing inside the main body 201 in the double jacket 209 structure (ie, for desalination) is heat exchanged and discharged in a state where the temperature is lowered. However, it is preferable to treat the discharged low-temperature exhaust gas in the chemical liquid cleaning device 600 like demineralized chlorine gas.

Foreign substances removed while passing through the main body 201 are mixed with some of the waste synthetic resin melt and discharged through the foreign substance transfer facility 204. Since some of the waste synthetic resin melt is mixed and has a high calorific value, it is molded and manufactured as solid fuel. (pelletization) may be used.

A discharge port is formed at the lower right side of the foreign matter removal facility 200 to discharge the melted waste synthetic resin that has passed through the main body 201 to the heating facility 300, which is the next step, and a transfer pump 210 for transferring the melted waste synthetic resin may further include.

4 is a view showing a heating facility, a thermal decomposition facility, and a circulation facility, in particular, in the emulsification device of FIG. 1. The heating facility 300 and the thermal decomposition facility 400 are installed separately, and in the heating facility 300, the waste synthetic resin melt is quickly heated and raised to a higher temperature, and then the thermal decomposition facility 400 stably causes thermal decomposition to occur. The waste synthetic resin melt is converted into oil or combustible gas to be obtained.

The reason why the heating facility 300 and the pyrolysis facility 400 are installed separately is that when the entire waste plastic (waste synthetic resin) melt is put into the pyrolysis furnace 401 constituting the pyrolysis facility 400 and heated, the waste synthetic resin melt This is because the wax problem generated when the whole is gradually raised in temperature and thermally decomposed cannot be solved.

The heating facility 300 is composed of a heater 307 and a hot stove 308. The heater 307 includes a first water and tube heat exchanger 304 , a second water and tube heat exchanger 305 , and a casing 306 . Each of the first and

second heat exchangers

304 and 305 has both ends between a pair of headers (ie, upper header 301 and lower header 302) and a pair of headers 301 and 302. includes a plurality of pipes 303 arranged to be connected, and the pipes 303 are spaced apart from each other at equal intervals and are connected to communicate with the headers 301 and 302, respectively. The first water and tube heat exchanger 304 and the second water and tube heat exchanger 305 are disposed in series with each other, and the first and

second heat exchangers

304 and 305 respectively and 750 ° C to 850 ° C supplied from the outside. The casing 306 is arranged so that heat exchange is performed with the high-temperature hot air.

On the other hand, the hot air stove 308 is a device for generating and supplying high-temperature hot air to the heater 307, and the fuel used to create the high-temperature hot air is a combustible gas that is a gaseous gas separated from gas in the oil recovery cooling condenser 700 will be able to use

The waste synthetic resin melt discharged from the foreign matter removal facility 200 is supplied to the first water and tube heat exchanger 304 by the transfer pump 210 and flows therein. At this time, the first water and tube heat exchanger 304 and the hot stove 308 ), the waste synthetic resin melt is rapidly raised to about 380° C. to 430° C. by heat exchange between high-temperature hot air supplied from, and then introduced into the pyrolysis facility 400.

The waste synthetic resin melt heated to a high temperature suitable for thermal decomposition while passing through the first water-tube heat exchanger 304 of the heater 307 is supplied to the thermal decomposition furnace 401, and the waste synthetic resin melt is stably thermally decomposed in the thermal decomposition furnace 401. As the process progresses, it is converted into oil vapor with oil components and pyrolysis gas with combustible gas components. The converted oil vapor and pyrolysis gas are condensed and recovered as oil in the oil recovery cooling condenser 700 and stored in the oil storage tank 701, while the uncondensed combustible gas can be used as fuel for the hot stove 308 There will be.

On the other hand, as thermal decomposition progresses in the pyrolysis furnace 401, the melted waste synthetic resin whose temperature has dropped is precipitated to the lower part of the pyrolysis furnace 401. 2 It is transported to the water-tube heat exchanger 305, heated again in the same way as described above, and then reintroduced into the pyrolysis furnace 401 to be converted into oil through a pyrolysis process. Meanwhile, some of the waste synthetic resin melt precipitated at the bottom of the pyrolysis furnace 401 is transported by the pumping means 501 to the transfer pipe 103 installed in the melting furnace 101 (see FIG. 1) and impregnated with the solid waste synthetic resin. It can also be reused as a hot oil that can be melted.

On the other hand, the high-temperature exhaust gas of 750 ° C to 850 ° C generated by burning combustible gas in the hot stove 308 is in a high temperature state of 350 ° C to 450 ° C even after performing heat exchange in the heater 307 to raise the temperature of the waste synthetic resin melt. Discharged from the heater 307, this exhaust gas is supplied to the double jacket 209 configured outside the main body 201 of the foreign matter removal facility 200 to increase the temperature of the waste synthetic resin melt flowing inside the foreign matter removal facility 200. It may also be used to achieve demineralization at elevated levels. This has been explained in the previous section.

[Description of code]

100: melting facility 101: melting furnace

102: inlet 103: transfer pipe

104: discharge valve 105: agitator

106: motor 107: reducer

108: shaft 109: stirring blade

110: hole 111: cap

200: foreign matter removal facility 201: main body

202: top plate 203: hopper

204: foreign matter transfer facility 205: first settling plate

206: second settler plate 207: third settler plate

208: inlet pipe 209: double jacket

210: transfer pump 300: heating facility

301: upper header 302: lower header

303: pipe 304: first water tube heat exchanger

305; Second water tube heat exchanger 306: casing

307: heater 308: hot air furnace

400: pyrolysis facility 401: pyrolysis furnace

500: circulation facility 501: circulation pump

600: liquid chemical cleaning device 700: oil recovery cooling condenser

701: oil storage tank

Claims

a melting furnace receiving solid waste synthetic resin and high-temperature oil and impregnating the solid waste synthetic resin into the high-temperature oil to melt the solid waste synthetic resin;

Heat exchange occurs between a heater including a water-tube heat exchanger in which heat is exchanged while the molten waste synthetic resin supplied from the melting furnace passes, and the molten waste synthetic resin passing through the water-tube heat exchanger by supplying high-temperature hot air to the heater. a heating facility including a hot air stove for raising the temperature of the waste synthetic resin melt to a temperature suitable for thermal decomposition; and

A thermal decomposition furnace for converting the waste synthetic resin melt supplied from the heating facility into oil vapor and combustible gas components by thermally decomposing the waste synthetic resin melt heated to a temperature suitable for thermal decomposition;

Waste synthetic resin emulsification device.
According to claim 1,

Some of the waste synthetic resin melt existing in the pyrolysis furnace as the high-temperature oil is transferred to the melting furnace and used.

Waste synthetic resin emulsification device.
According to claim 1,

The melting furnace further includes an agitator;

The stirrer includes a shaft extending into the melting furnace and rotating by receiving power, a stirring blade rotatably connected to a free end of the shaft extending into the melting furnace, and a plurality of holes surrounding the stirring blade. Includes a cap having;

The stirrer promotes melting of the solid waste synthetic resin by stirring the solid waste synthetic resin and the high-temperature oil provided in the melting furnace.

Waste synthetic resin emulsification device.
According to claim 1,

A main body including a hopper formed at a lower portion;

an inlet pipe for introducing the molten waste synthetic resin from the melting furnace, the inlet pipe being positioned close to the wall of the main body and extending along the wall of the main body to reach close to the inlet of the hopper;

foreign matter transfer means provided on the bottom surface of the hopper and for removing foreign matter contained in the waste synthetic resin melt and deposited on the bottom surface of the hopper; and

Further comprising a foreign matter removal facility including a discharge port for sending the melted waste synthetic resin from which foreign substances are removed toward the heating facility,

Waste synthetic resin emulsification device.
According to claim 4,

The foreign matter removal device further includes a plurality of settling plates disposed in the main body, and the waste synthetic resin melt flowing in through the inlet pipe flows inside the main body and is discharged through the discharge port until the waste synthetic resin melt is discharged through the plurality of sedimentation plates. Arranging the plurality of sedimentation plates in the main body to flow while overflowing and colliding between the sedimentation plates,

Waste synthetic resin emulsification device.
According to claim 5,

The settling plates include first, second, and third settling plates sequentially arranged in a horizontal direction;

Each of the first sinking plate and the third sinking plate has a lower end fixed across the bottom surface of the hopper of the main body and a transverse surface extending from the lower end toward the upper part of the main body, and the inlet in a state that is not fixed to the main body. a free end bent towards the pipe;

the second sinking plate is spaced apart from the bottom surface of the hopper of the main body and fixed to the main body, and is also disposed separately from the first and third sinking plates;

Here, the waste synthetic resin melt overflows the first settling plate, collides with the second settling plate, flows through the lower part of the hopper, and then flows along the third settling plate.

Waste synthetic resin emulsification device.
According to claim 4,

The foreign matter removal device further includes an outer wall for forming a double jacket structure in the main body by entirely surrounding the outside of the main body,

Desalting chlorine gas contained in the waste synthetic resin melt by supplying high-temperature exhaust gas discharged from the heating facility to the double jacket to raise the temperature of the waste synthetic resin melt flowing inside the main body;

Waste synthetic resin emulsification device.
According to claim 5,

The foreign matter removal device further includes an outer wall for forming a double jacket structure in the main body by entirely surrounding the outside of the main body,

Desalting chlorine gas contained in the waste synthetic resin melt by supplying high-temperature exhaust gas discharged from the heating facility to the double jacket to raise the temperature of the waste synthetic resin melt flowing inside the main body;

Waste synthetic resin emulsification device.
According to claim 1,

The water-tube heat exchanger of the heater includes a pair of headers and a plurality of pipes disposed spaced apart from each other so that both ends are connected and communicated between the pair of headers;

Here, the waste synthetic resin melt supplied from the melting furnace obtains heat exchange between the pair of headers of the water tube heat exchanger and the high-temperature hot air supplied from the hot air furnace while passing through the inside of the pipes. raising the temperature of the waste synthetic resin melt to a temperature suitable for extracting an oil component from the waste synthetic resin melt through the heat exchange;

Waste synthetic resin emulsification device.
According to claim 9,

further comprising a pumping means;

Among the melted waste synthetic resins introduced into the pyrolysis furnace from the heat exchanger of the heater, as thermal decomposition progresses in the pyrolysis furnace, the molten waste synthetic resin precipitated is pumped and supplied to the melting furnace by the pumping means to supply the melted waste synthetic resin to the melting furnace. Impregnating and melting solid waste synthetic resin,

Waste synthetic resin emulsification device.
According to claim 1,

The heater of the heating equipment further includes first and second water-tube heat exchangers;

Each of the first and second heat exchangers includes a pair of headers and a plurality of pipes disposed spaced apart from each other so that both ends are connected and communicated between the pair of headers;

Here, while the waste synthetic resin melt supplied from the melting furnace is supplied to and passed through the first heat exchanger, heat is exchanged with the high-temperature hot air supplied from the hot air furnace, and through the heat exchange, oil from the waste synthetic resin melt is exchanged. The temperature of the waste synthetic resin melt is raised to a temperature suitable for extracting components and introduced into the thermal decomposition furnace;

Here, while the molten waste synthetic resin supplied from the first heat exchanger is pyrolyzed in the pyrolysis furnace, the molten waste synthetic resin precipitated due to a drop in temperature is supplied to the second heat exchanger, raised in temperature, and then reintroduced into the pyrolysis furnace for thermal decomposition. is going on,

Waste synthetic resin emulsification device.
a melting furnace receiving solid waste synthetic resin and high-temperature oil and impregnating the solid waste synthetic resin into the high-temperature oil to melt the solid waste synthetic resin;

A main body including a hopper formed at a lower portion thereof, an inlet pipe positioned close to a wall of the main body and extending along the wall of the main body to reach an inlet of the hopper and introducing the molten waste synthetic resin from the melting furnace, the hopper provided on the bottom surface of the waste synthetic resin melt, and a foreign material transfer means for removing foreign matter contained in the waste synthetic resin melt and settling on the bottom surface of the hopper, and a discharge port for sending the waste synthetic resin melt from which the foreign matter is removed toward the heating facility. Foreign matter removal equipment including;

Between a heater including a water tube heat exchanger in which heat is exchanged while passing the melt of waste synthetic resin supplied from the foreign matter removal facility, and the melt of waste synthetic resin passing through the water tube heat exchanger by supplying high-temperature hot air to the heater a heating facility including a hot stove for raising the temperature of the waste synthetic resin melt to a temperature suitable for thermal decomposition by causing heat exchange; and

A thermal decomposition furnace for converting the waste synthetic resin melt supplied from the heating facility into oil vapor and combustible gas components by thermally decomposing the waste synthetic resin melt heated to a temperature suitable for thermal decomposition;

Waste synthetic resin emulsification device.
According to claim 12,

The foreign matter removal device further includes a plurality of settling plates disposed in the main body, and the waste synthetic resin melt flowing in through the inlet pipe flows inside the main body and is discharged through the discharge port until the waste synthetic resin melt is discharged through the plurality of sedimentation plates. Arranging the plurality of sedimentation plates in the main body to flow while overflowing and colliding between the sedimentation plates,

Waste synthetic resin emulsification device.
According to claim 13,

The settling plates include first, second, and third settling plates sequentially arranged in a horizontal direction;

Each of the first sinking plate and the third sinking plate has a lower end fixed across the bottom surface of the hopper of the main body and a transverse surface extending from the lower end toward the upper part of the main body, and the inlet in a state that is not fixed to the main body. a free end bent towards the pipe;

the second sinking plate is spaced apart from the bottom surface of the hopper of the main body and fixed to the main body, and is also disposed separately from the first and third sinking plates;

Here, the waste synthetic resin melt overflows the first settling plate, collides with the second settling plate, flows through the lower part of the hopper, and then flows along the third settling plate.

Waste synthetic resin emulsification device.
According to claim 12,

The foreign matter removal device further includes an outer wall for forming a double jacket structure in the main body by entirely surrounding the outside of the main body,

Desalting chlorine gas contained in the waste synthetic resin melt by supplying high-temperature exhaust gas discharged from the heating facility to the double jacket to raise the temperature of the waste synthetic resin melt flowing inside the main body;

Waste synthetic resin emulsification device.
According to claim 12,

The water-tube heat exchanger of the heater includes a pair of headers and a plurality of pipes disposed spaced apart from each other so that both ends are connected and communicated between the pair of headers;

Here, the waste synthetic resin molten liquid supplied from the foreign matter removal facility undergoes heat exchange between the pair of headers of the water-tube heat exchanger and the high-temperature hot air supplied from the hot stove while passing through the inside of the pipes. and raising the temperature of the waste synthetic resin melt to a temperature suitable for extracting an oil component from the waste synthetic resin melt through the heat exchange.

Waste synthetic resin emulsification device.
According to claim 12,

The heater of the heating equipment further includes first and second water-tube heat exchangers;

Each of the first and second heat exchangers includes a pair of headers and a plurality of pipes disposed spaced apart from each other so that both ends are connected and communicated between the pair of headers;

Here, while the waste synthetic resin melt supplied from the foreign matter removal facility is supplied to and passes through the first heat exchanger, heat is exchanged with the high-temperature hot air supplied from the hot air furnace, and the waste synthetic resin melt is supplied through the heat exchange. raising the temperature of the waste synthetic resin melt to a temperature suitable for extracting an oil component from the melt and introducing it into the pyrolysis furnace;

Here, while the waste synthetic resin melt supplied from the first heat exchanger is pyrolyzed in the pyrolysis furnace, the waste synthetic resin molten solution precipitated due to a drop in temperature is supplied to the second heat exchanger, raised in temperature, and then reintroduced into the pyrolysis furnace for thermal decomposition. is going on,

Waste synthetic resin emulsification device.