JP5274943B2 - Oiling system - Google Patents

Description

  The present invention relates to an oil conversion system for converting synthetic resin (plastic) such as waste plastic into oil.

  Conventionally, various techniques for converting waste plastic such as PP (polypropylene) into oil have been proposed. For example, Patent Document 1 discloses a melting part that heats and melts a plastic, a decomposition part that further heats and depolymerizes the plastic melted in the melting part, and generates a decomposition gas, and a decomposition gas generated in the decomposition part An oiling plant including an oiling unit that cools the oil to produce oil is described. In this oil production plant, an electric heater of a nichrome heater is adopted as means for heating the plastic in the decomposition section, and the temperature is controlled by raising the nichrome heater to a maximum of 650 ° C.

JP 2004-269755 A

The following problems remain in the conventional oil production technology.
In the conventional oil purification plant described in Patent Document 1, a nichrome heater is used as an electric heater for heating a synthetic resin (plastic). It is necessary to heat the nichrome heater to about 650 ° C. to bring the inside to about 450 ° C. However, since nichrome heaters are normally used within a temperature range of 500 ° C. to 600 ° C., use at 650 ° C. exceeding 600 ° C. is because Nichrome wire deteriorates early and the heater life is short. Had the inconvenience that it could not withstand practical use. In particular, when continuous operation is performed, there is a problem that the temperature in the furnace decreases to 400 ° C. or less due to insufficient heating due to deterioration of the nichrome heater, and gasification cannot be sufficiently performed.
In order to perform high temperature heating during gasification, it may be possible to employ a burner as a heating means. In this case, however, the production facility becomes large and a large plant is required. As a result, it is difficult to reduce the size, and there is a disadvantage that the fuel for the burner is required and the production cost is low.

  The present invention has been made in view of the above-described conventional problems, and can be continuously operated with high durability, and can obtain high-quality oil by efficiently heating and oiling a synthetic resin at a high temperature. An object of the present invention is to provide an oil production system that can be reduced in size and production cost.

  The present invention employs the following configuration in order to solve the above problems. That is, the oiling system according to the present invention includes a melting furnace that heats and melts a synthetic resin, and a first electric heater section that is formed of a Kanthal alloy material by heating the synthetic resin melted in the melting furnace. 1st vaporizer which generates 1 vaporization gas, 1st oilizer which cools said 1st vaporization gas and produces | generates liquid 1st oil, and forms said 1st oil with Kanthal alloy material A second vaporizing furnace for generating a second vaporized gas by heating by the second electric heater unit, and a second oilizer for cooling the second vaporized gas to generate a liquid second oil It is characterized by providing.

In this oil production system, since the first electric heater part and the second electric heater part are made of a Kanthal alloy material which is a ferritic resistance alloy, the temperature is about 1400 ° C. compared with a conventional nichrome heater whose limit is about 600 ° C. Can be used at high temperatures, and has high durability. That is, in the oil production system of the present invention, even if continuous operation is performed at a high temperature of about 700 ° C. with a Kanthal alloy heater, the heater temperature is not deteriorated and the heating temperature can be stably maintained, so that the furnace temperature is suitable for gasification. In addition, the temperature can be maintained at about 450 ° C. for a long time. Moreover, the furnace temperature can be rapidly raised to the gasification temperature by heating at a temperature significantly higher than that of the prior art, and the startup time can be greatly shortened. In this way, the conventional nichrome heater was actually incompletely gasified and oiled, but by adopting a Kanthal alloy heater capable of high-temperature heating with a long life, high efficiency and stable over a long period of time Gasification and oiling can be performed.
Moreover, by using the first electric heater part and the second electric heater part made of Kanthal alloy material without using a burner that requires fuel as a heating means for gasification, it is sufficient for gasification only by electric power. High-temperature heating is possible, and the system or apparatus can be downsized and the production cost can be reduced.
Furthermore, in the oiling system of the present invention, the first oil is heated by the second electric heater portion formed of the Kanthal alloy material in the second vaporizing furnace to generate the second vaporized gas, and this is used as the second oil. Since the second oil is cooled by the chemical generator, for example, the first oil corresponding to the heavy oil A containing the waxy substance can be refined into the second oil equivalent to the light oil having almost no waxy substance. it can.

  Moreover, in the oil production system of this invention, the said 1st electric heater part and the said 2nd electric heater part heat the inside of a furnace to 450 degreeC or more, It is characterized by the above-mentioned. That is, in this oil generation system, the first electric heater part and the second electric heater part are heated while holding the inside of the furnace at 450 ° C. or higher, so that it is sufficiently good in all of 3P (polyethylene, polystyrene, polypropylene). Gasification is performed twice in a furnace that is heated and held to a temperature at which gasification is possible, and high-quality oil can be obtained.

  In the oily system of the present invention, a first catalyst furnace that contacts a catalyst material that changes the first vaporized gas into a liquefiable gas, and a catalyst that changes the second vaporized gas into a liquefiable gas. And a second catalyst furnace in contact with the material, wherein the first catalyst furnace and the second catalyst furnace include a catalyst heating mechanism for heating the catalyst material. That is, in this oil production system, the first catalyst furnace and the second catalyst furnace are equipped with a catalyst heating mechanism for heating the catalyst material, and thus the catalyst is heated to a temperature at which high catalytic action is obtained by the catalyst heating mechanism. Thus, a high catalytic effect can be obtained.

  Further, the oil generation system of the present invention includes an air cooling cooling device that cools air to generate cool air, and the first oil generator and the second oil generator include the first vaporized gas or the first gas generator. It is an air-cooling type heat exchanger which heat-exchanges the 2 vaporization gas with the said cold air from the said air-cooling cooling device, and cools it. That is, in this oil generation system, the first oil generator and the second oil generator cool the first vaporized gas or the second vaporized gas by exchanging heat with the cold air from the cooling device for air cooling. Since it is an exchanger, maintainability is improved and electrical short-circuits can be reduced as compared with the case of using liquid as a refrigerant, such as a water-cooled heat exchanger. Further, since the cool air is used as the refrigerant, a higher cooling effect can be obtained as compared with the conventional case where heat is simply exchanged with air at normal temperature.

  Furthermore, in the oil conversion system of the present invention, the drive unit that sends the cold air from the air-cooling cooling device to the heating unit in at least one drive mechanism of the melting furnace, the first vaporization furnace, and the second vaporization furnace. It is characterized by having a cooling pipe for use. That is, in this oil conversion system, the cooling air is sent to the heat generating part (for example, a bearing part) in at least one drive mechanism of the melting furnace, the first vaporizing furnace, and the second vaporizing furnace by the driving part cooling pipe. The drive mechanism can be cooled, and the life of the apparatus can be improved. In particular, in the present invention, an electric heater portion made of a Kanthal alloy material is used, and heating is performed at a higher temperature than before, so that the heat load on the driving mechanism of the vaporizing furnace is increased, so that air cooling with a high cooling effect by cold air is performed. Is effective.

  In addition, the oil conversion system of the present invention is connected to the lower part of the second oil generator and collects the generated liquid second oil, and is connected to the upper part of the oil tank and sucks the internal air. And a tank blower. That is, in this oil generation system, since the tank blower for sucking the air inside the oil tank is provided, the oil (second oil) that has been reduced in pressure in the oil tank and oiled in the second oil converting section In addition to facilitating the suction, the second oilification section connected to the oil tank can also be decompressed to facilitate the suction of vaporized gas into the second oilification section.

  In addition, the oil production system of the present invention includes a material supply unit that inputs a synthetic resin into the melting furnace, and the material supply unit has a charging control mechanism that divides the synthetic resin into predetermined amounts and inputs them at predetermined time intervals. It is characterized by having. In other words, in this oil production system, the material supply unit is equipped with an input control mechanism that divides the synthetic resin into predetermined amounts and inputs them at predetermined time intervals, so the input amount of the synthetic resin material can be adjusted in a so-called batch system. It is possible to prevent the synthetic resin material from flowing down to the melting furnace at once and exceeding the processing capacity.

  Furthermore, the oil supply system of the present invention includes the material supply unit including a hopper unit that stores the synthetic resin, and a charging pipe that connects a lower part of the hopper unit and an upper part of the melting furnace, and the charging control. The mechanism has a rotating blade-like valve having a plurality of blade portions rotatably supported around the horizontal axis between the lower portion of the hopper portion and the input pipe, and a blade-like shape that rotationally drives the rotating blade-like valve And a valve motor. That is, in this oil generation system, the charging control mechanism includes a rotary blade-shaped valve and a blade-shaped valve motor that rotationally drives the rotary blade-shaped valve, so that by rotating the rotary blade-shaped valve, Only the synthetic resin material that has entered between the blade portions of the rotary blade-shaped valve is divided into small portions and charged into the melting furnace from the charging tube. Therefore, with a simple configuration of the rotary blade-shaped valve and the blade-shaped valve motor, a fixed amount of material can be input separately, and the input amount can be easily adjusted by adjusting the rotational speed of the rotary blade-shaped valve. be able to.

  Further, in the oil conversion system of the present invention, the material supply unit includes an off-gas blower that allows a synthetic resin to be injected into an upper part of the melting furnace and sucks the gas in the melting furnace from the lower part of the melting furnace. It is characterized by being. That is, in this oil production system, an off-gas blower that sucks the gas in the melting furnace from the lower part of the melting furnace is provided, so that the introduction of the synthetic resin into the melting furnace can be promoted by sucking the synthetic resin downward. . This is particularly effective when a light synthetic resin material is used.

The present invention has the following effects.
That is, according to the oiling system of the present invention, the first electric heater part and the second electric heater part are formed of a Kanthal alloy material which is a ferrite-based resistance alloy, so that even in continuous operation as compared with a conventional nichrome heater. It can be used at high temperatures and has high durability. Therefore, high-temperature heater heating is possible over a long period of time, and the synthetic resin can be efficiently heated, and the cost of parts can be reduced by reducing the replacement frequency.
In addition, by using the first electric heater part and the second electric heater part made of Kanthal alloy material without using a burner that requires fuel, high-temperature heating sufficient for gasification is possible only by electric power, It is possible to reduce the size and production cost of the system or apparatus.
Further, according to the oil conversion system of the present invention, the first oil is gasified again in the second vaporization furnace having the second electric heater portion of the Kanthal alloy material, and this oil is converted into oil. The first oil corresponding to the heavy oil A can be refined to an oil equivalent to light oil having almost no waxy substance.
As described above, in the present invention, oil equivalent to light oil that can be used as fuel oil from synthetic resin such as waste plastic is obtained at high efficiency and at low cost by two high-temperature gasification treatments and liquefaction treatments using a cantal alloy heater. Can be manufactured.

  Hereinafter, one embodiment of the oil production system in the present invention will be described with reference to FIG. In the drawings used in the following description, the scale is appropriately changed to make each member a recognizable size.

  The oil conversion system in the present embodiment is an electric oil conversion apparatus or an oil conversion plant for converting synthetic resin (plastic) such as waste plastic into oil, and a melting furnace 1 for heating and melting the synthetic resin of the material, The material supply unit 2 for feeding the synthetic resin into the melting furnace 1 from the upper part of the melting furnace 1 and the first vaporizing furnace 3A for generating the first vaporized gas by heating the synthetic resin melted in the melting furnace 1 And two first catalyst furnaces 5A that contact the catalyst material 4 that transforms the first vaporized gas generated in the first vaporizer 3A into a liquefiable gas, and the first vaporized gas is cooled to form a liquid A first condenser (first oilizer) 6A that generates first oil (naphtha), a second vaporizer 3B that heats the first oil and generates a second vaporized gas, and the second vaporizer Catalyst for converting the second vaporized gas generated in the furnace 3B into a liquefiable gas 4, two second catalytic furnaces 5 </ b> B, a second condenser 6 </ b> B (second oil generator) that cools the second vaporized gas to generate liquid second oil, An air-cooling cooling device 7 that generates cool air as a refrigerant for the first condenser 6A and the second condenser 6B, and an oil tank 8 that is connected to the lower portion of the second condenser 6B and collects the generated liquid second oil. ing.

The synthetic resin used as the material is a plastic material such as polypropylene, polyethylene, or polystyrene pulverized to about 1 to 2 cm, for example.
The material supply unit 2 includes a hopper unit 9 that stores a synthetic resin of a material, a charging pipe 10 that connects a lower part of the hopper unit 9 and an upper part of the melting furnace 1, and a predetermined amount by dividing the synthetic resin into a predetermined amount. A charging control mechanism 11 that is charged at time intervals and an offgas blower 12 that sucks offgas in the melting furnace 1 from the lower part of the melting furnace 1 are provided.

  The charging control mechanism 11 is a rotating blade having four blade portions which are supported rotatably around the horizontal axis between the lower portion of the hopper portion 9 and the charging tube 10 and which extend perpendicularly to each other and radially outward. And a blade-shaped valve motor 14 that rotationally drives the rotary blade-shaped valve 13. This blade-shaped valve motor 14 is an encoder-type rotation control motor, and rotates a rotating blade-shaped valve 13 in which an injection region is divided into four equal parts by 90 degrees divided by four blade portions, thereby synthesizing materials. The resin is divided into a predetermined amount and fed into the melting furnace 1 through a charging pipe 10 in a batch manner.

  The melting furnace 1 includes a round steel pipe main body 15, a melting furnace lead screw 17 that is rotatably supported in the round steel pipe main body 15 by a bearing portion 16 and conveys a synthetic resin material while stirring, and the melting furnace A melting furnace motor 18 connected to the lead screw 17 and rotationally driven, and a melting furnace electric heater 19 for heating and melting the synthetic resin in the round steel pipe main body 15 are provided.

  The melting furnace electric heater section 19 is a plurality of electric heaters formed of a Kanthal alloy material incorporated in a ceramic heater holder installed on the outer periphery of the round steel pipe main body 15. The melting furnace electric heater 19 is divided and installed in the extending direction of the round steel pipe main body 15. The synthetic resin in the round steel pipe body 15 is heated by the melting furnace electric heater 19 until it becomes a paste. For example, the inside of the melting furnace 1 is heated to 200 ° C. to 350 ° C. by the melting furnace electric heater 19. The melting furnace electric heater 19 divided into a plurality of parts is set to have a stepwise high temperature in accordance with the direction of transport of the synthetic resin in the furnace, that is, in accordance with the state of melting of the synthetic resin in the furnace.

  The first vaporizing furnace 3A includes a cylindrical furnace body 20, a vaporizing furnace lead screw 21 that is rotatably supported in the cylindrical furnace body 20 by a bearing unit 16 and conveys synthetic resin while stirring, A vaporizing furnace motor 22 that is connected to the vaporizing furnace lead screw 21 and rotationally drives it, and a first electric heater section 23 that heats and liquefies the paste-like synthetic resin in the cylindrical furnace body 20 and further vaporizes it. And.

The cylindrical furnace body 20 is provided in the former stage part 20A of the furnace body in which the synthetic resin melted in the paste form in the melting furnace 1 is placed, and is heated from the pasty state to the liquid state by heating. A vaporization promoting portion 20B that promotes vaporization from the synthetic resin.
The vaporization promoting portion 20B has a U-shaped cylindrical structure with a U-shaped cross section, and employs a structure in which the liquid level is set wide and the vaporization area is increased to increase the vaporization efficiency.

  The first electric heater section 23 is similar to the melting furnace electric heater section 19 and includes a plurality of electric heaters formed of a cantal alloy material incorporated in a ceramic heater holder installed on the outer periphery of the cylindrical furnace body 20. It is. The first electric heater 23 is divided into a plurality of parts in the extending direction of the cylindrical furnace body 20. The first electric heater 23 is heated to a temperature at which the synthetic resin in the cylindrical furnace body 20 is liquefied and vaporized.

The second vaporizing furnace 3B includes a cylindrical furnace body 40, and a second electric heater 43 that heats the first oil in the cylindrical furnace body 40 and vaporizes it into a second vaporized gas. Yes.
Similar to the first electric heater unit 23, the second electric heater unit 43 includes a plurality of electric heaters formed of a Kanthal alloy material incorporated in a ceramic heater holder installed on the outer periphery of the cylindrical furnace body 40. It is. These second electric heaters 43 are divided and installed in the extending direction of the cylindrical furnace body 40. The second electric heater 43 is heated to a temperature at which the first oil in the cylindrical furnace body 40 is vaporized. The second vaporizing furnace 3B for gasifying the first oil may be smaller than the first vaporizing furnace 3A for gasifying the dissolved synthetic resin.

  For example, the heater wire made of the Kanthal alloy material of the first electric heater unit 23 and the second electric heater unit 43 is heated in the range of 700 ° C. to 800 ° C., and the first vaporizer 3A and the second vaporizer 3B are Heating is performed within a range of 390 ° C. to 460 ° C. by the first electric heater 23 and the second electric heater 43. Preferably, in order to perform sufficient gasification in all of 3P (polyethylene, polystyrene, polypropylene), heating is performed so that the inside of the furnace is maintained at 450 ° C. or higher. The upper limit of the furnace temperature is set to 460 ° C., as described above, if the furnace temperature is 450 ° C. or higher, all 3P can be gasified, so that heating power is not consumed more than necessary. The upper limit is set to 460 ° C. with a margin of 10 ° C. Moreover, the temperature of the first electric heater section 23 divided into a plurality of parts is set higher stepwise according to the direction of the synthetic resin in the furnace, that is, according to the liquefied state of the synthetic resin in the furnace.

  In addition, efficiency can be improved by shortening the time which reaches | attains the temperature after starting the 1st electric heater part 23 until a synthetic resin vaporizes. Therefore, the first electric heater 23 detects the temperature in the first vaporizing furnace 3A, and is set to a high heater temperature until the vaporizing temperature is reached. However, when the furnace reaches the vaporizing temperature, the heater temperature control setting is performed. The temperature inside the furnace is controlled so as not to overshoot by lowering the temperature.

  In addition, the melting furnace electric heater 19 and the first electric heater 23 may be leaked due to contact between the heater wire of the Kanthal alloy material and the round steel pipe body 15 or the cylindrical furnace body 20 if there is no electrical insulating cover. Therefore, it is set so that a voltage of 48V or less is applied. In addition, when the heater wire of the Kanthal alloy material is heated in the air, an electrically insulating protective oxide film is formed and the life is improved.

As the Kanthal alloy material, an APM line, an Al line, an AF line, a D line, an LT line, or the like can be used.
Since the melting furnace motor 18 and the vaporizing furnace motor 22 are subjected to a load of 2 to 3 times depending on the viscosity of the melted synthetic resin, an inverter controlled geared motor having a torque control vector driver capable of withstanding this load. It is.

The first catalyst furnace 5A is divided into two parts connected to the upper part of the vaporization promoting portion 20B in order to reduce the load on the catalyst material 4, and the catalyst material 4 is accommodated in the steel pipe so that the first vaporization furnace The vaporized gas introduced from 3A can flow between the catalyst materials 4.
The second catalytic furnace 5B is connected to the upper part of the cylindrical furnace body 40 of the second vaporizing furnace 3B in order to reduce the load on the catalytic material 4, and the catalytic material 4 is accommodated in the steel pipe. The second vaporized gas introduced from the second vaporization furnace 3B can flow between the catalyst materials 4.
As the catalyst material 4, for example, artificial zeolite, activated aluminum, or the like is employed.

  Further, the first catalyst furnace 5 </ b> A and the second catalyst furnace 5 </ b> B include a catalyst furnace electric heater unit (catalyst heating mechanism) 24 that heats the catalyst material 4. The catalytic furnace electric heater section 24 is an electric heater formed of a Kanthal alloy material incorporated in a ceramic heater holder installed on the outer periphery of the steel pipe of the first catalytic furnace 5A and the second catalytic furnace 5B. The catalytic furnace 4 is heated to a predetermined temperature at which high catalytic action is obtained by the catalytic furnace electric heater 24.

The first capacitor 6A is connected to the first catalyst furnace 5A, and cools the first vaporized gas sent through the first catalyst furnace 5A by exchanging heat with the cold air from the cooling apparatus 7 for air cooling. It is a heat exchanger.
The second capacitor 6B is connected to the second catalytic furnace 5B, and cools the second vaporized gas sent through the second catalytic furnace 5B by exchanging heat with the cold air from the cooling device 7 for air cooling. It is an air-cooled heat exchanger.

  The air cooling cooling device 7 is connected to a condenser cold air pipe 25 that sends cold air to the first capacitor 6A and the second capacitor 6B. In addition, the first capacitor 6A and the second capacitor 6B are provided with bearings 16 and the like in the driving mechanism of the melting furnace 1 and the first vaporizing furnace 3A for the cold gas heat-exchanged with the first vaporized gas or the second vaporized gas. The driving part cooling pipe 26 is connected to the heat generating part.

  Further, the driving part cooling pipe 26 is connected to a cooling jacket 27 which is branched in the middle and covers the outer periphery in the vicinity of the charging pipe 10 of the melting furnace 1. The cooling jacket 27 cools the vicinity of the charging pipe 1 of the melting furnace 1 with the cold air, and the synthetic resin charged into the melting furnace 1 melts and adheres near the charging pipe 10 so that the synthetic resin material can be smoothly distributed. It has a function to prevent obstruction.

The oil tank 8 is connected to the second condenser 6B by an oil pipe 28, and the second oil cooled and liquefied by the second condenser 6B through the oil pipe 28 can be recovered.
Further, a tank blower 29 for sucking air inside the tank is connected to the upper part of the oil tank 8. The tank blower 29 is controlled to an optimum suction speed by inverter control.

  A water-sealed tank 31 storing water is connected to the off-gas blower 12 and the tank blower 29 via an off-gas pipe 30. Note that the tip of the off-gas pipe 30 is disposed in the water in the water-sealed tank 31. Further, an off-gas combustor 32 for burning the collected off-gas is connected to the upper part of the water-sealed tank 31. That is, off-gas from the melting furnace 1 and the oil tank 8 is once burned in the water-sealed tank 31 and then burned in the off-gas combustor 32.

The melting furnace 1 and the first vaporizing furnace 3A are connected to an emergency fire-extinguishing CO ₂ cylinder 33 that sends CO ₂ into the furnace through a CO ₂ pipe 33a during emergency fire extinguishing.

  As described above, in the oil production system of the present embodiment, the first electric heater portion 23 and the second electric heater portion 43 are formed of a Kanthal alloy material that is a ferrite-based resistance alloy. Compared to conventional nichrome heaters, it can be used at high temperatures up to about 1400 ° C. and has high durability. That is, in the oil generation system of this embodiment, even if continuous operation is performed at a high temperature of about 700 ° C. with a cantal alloy heater, the heater does not deteriorate and the heating temperature can be stably maintained. It can be maintained at a suitable level of 450 ° C. for a long time. Moreover, the furnace temperature can be rapidly raised to the gasification temperature by heating at a temperature significantly higher than that of the prior art, and the startup time can be greatly shortened. Thus, while the conventional nichrome heater was actually incompletely gasified and oiled, the first electric heater section 23 and the second electric heater of the Kanthal alloy heater capable of high-temperature heating with a long lifetime. By adopting the portion 43, it is possible to perform gasification and oil formation that is highly efficient and stable over a long period of time.

In addition, by using the first electric heater section 23 and the second electric heater section 43 made of Kanthal alloy material without using a burner that requires fuel as a heating means for gasification, gas can be generated only by electric power. Sufficient high temperature heating is possible, and the system or apparatus can be downsized and the production cost can be reduced.
Further, in the second vaporizing furnace 3B, the first electric oil is heated by the second electric heater 43 formed of a canthal alloy material to generate a second vaporized gas, which is cooled by the second capacitor 6B and then second. Therefore, for example, the first oil corresponding to the heavy oil A containing the waxy substance can be refined into the second oil corresponding to the light oil having almost no waxy substance.

Moreover, since the 1st electric heater part 23 and the 2nd electric heater part 43 hold | maintain and heat the inside of a furnace to 450 degreeC or more, the inside of the furnace heated and hold | maintained to the temperature which can fully gasify satisfactorily In this way, gasification is performed twice and a good quality oil can be obtained.
Further, since the first catalyst furnace 5A and the second catalyst furnace 5B are provided with the catalyst furnace electric heater 24 for heating the catalyst material 4, the catalyst is heated to a temperature at which high catalytic action can be obtained by the catalyst furnace electric heater 24. A high catalytic effect can be obtained by heating.

  Further, since the first capacitor 6A and the second capacitor 6B are air-cooled heat exchangers that cool the first vaporized gas or the second vaporized gas by exchanging heat with the cold air from the air-cooling cooling device 7, As compared with the case of using a liquid as a refrigerant, such as a heat exchanger, maintenance performance is improved and electrical short-circuiting can be reduced. Further, since the cool air is used as the refrigerant, a higher cooling effect can be obtained as compared with the conventional case where heat is simply exchanged with air at normal temperature.

  Further, since the cooling air is sent to the heat generating part (for example, a bearing part) in the driving mechanism of the melting furnace 1 and the first vaporizing furnace 3A by the driving part cooling pipe 26, the driving mechanism can be cooled, and the life of the apparatus Can be improved. In particular, since the first electric heater section 23 made of Kanthal alloy material is employed and heating is performed at a higher temperature than in the past, the heat load on the drive mechanism of the first vaporizing furnace 3A is also increased, so that a high cooling effect by cold air is achieved. Air cooling is effective. In addition, when a drive mechanism is provided also in the 2nd vaporization furnace 3B, you may make it cool by sending cold air also to this drive mechanism by the cooling piping 26 for drive parts.

  In addition, since the material supply unit 2 includes the input control mechanism 11 that divides the synthetic resin into predetermined amounts and inputs them at predetermined time intervals, the input amount of the synthetic resin material can be adjusted by a so-called batch method. Can be prevented from flowing to the melting furnace 1 at a stretch and exceeding the processing capacity.

Further, the charging control mechanism 11 has a simple configuration of the rotary blade-shaped valve 13 and the blade-shaped valve motor 14, and can feed a fixed amount of material separately and adjust the rotational speed of the rotary blade-shaped valve 13. Thus, the input amount can be easily adjusted.
Moreover, since the off-gas blower 12 for sucking the gas in the melting furnace 1 from the lower part of the melting furnace 1 is provided, the synthetic resin can be sucked downward to facilitate introduction into the melting furnace 1. This is particularly effective when a light synthetic resin material is introduced.

  Further, since the tank blower 29 for sucking the air in the oil tank 8 is provided, the oil (second oil) that has been reduced in pressure in the oil tank 8 and liquefied by the second capacitor 6B is easily sucked. At the same time, the second capacitor 6B connected to the oil tank 8 can also be decompressed to facilitate the suction of vaporized gas into the second capacitor 6B.

The result of having analyzed about the 2nd oil actually produced from the synthetic resin of the waste plastic using the oil conversion system of the said embodiment is shown below.
That is, 3P (polyethylene, polystyrene, polypropylene) waste plastic as a raw material is put into the hopper section 9 of the present oil conversion system, and the melting furnace 1, the first vaporizing furnace 3A, the first catalytic furnace 5A, the first capacitor 6A, the first The oily component analysis was performed on the second oil sent to the oil tank 8 through the two-vaporization furnace 3B, the second catalyst furnace 5B, and the second capacitor 6B in this order. For comparison, the oil component analysis was similarly performed for the first oil obtained by the first capacitor 6A.

  In the first oil obtained from the first vaporized gas, all 3P was decomposed into multi-component low-boiling molecules, and the boiling points were all gasoline odor liquids boiling at 150 ° C. or lower. In addition, a waxy trace was observed as a residue component when distilled at atmospheric pressure. In addition, among 3P, regarding polystyrene, not many decomposition components, but a plurality of components were observed by HPLC (high performance liquid chromatography). On the other hand, a very large number of components were observed in the waxy substance. Therefore, this first oil has a low flash point and is a relatively few kinds of mixed components, and is judged to be equivalent to A heavy oil.

On the other hand, in the second oil obtained from the second vaporized gas, the waxy substance found in the first oil was hardly observed. Therefore, the second oil was sufficiently used as a fuel. Judged to be equivalent to usable diesel oil. That is, when the second oil is adapted to the JIS standard of “waste plastic pyrolysis oil-boiler fuel and diesel generator fuel”, it was at a level corresponding to “boiler fuel”.
In addition, when the second oil was actually used as a fuel in a commercial vehicle equipped with a diesel engine, the diesel engine could be driven like the commercial light oil, and there was no problem even if the vehicle traveled over 200 km.

  In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.

For example, in the above-described embodiment, two first catalyst furnaces, one second catalyst furnace, and each one first capacitor and second capacitor are provided. However, one or three or more first catalyst furnaces, You may provide the above 2nd catalyst furnace, the 2nd or more 1st capacitor | condenser, and a 2nd capacitor | condenser.
Further, the melting furnace electric heater section and the first electric heater section are divided into a plurality along the conveying direction of the synthetic resin and are provided in the melting furnace and the first vaporizing furnace. And the size of the melting furnace. Moreover, also about a 2nd vaporization furnace, the division | segmentation number and installation range of a 2nd electric heater part are set according to the size etc. of a furnace.

It is the whole schematic block diagram which shows one Embodiment of the oil-ized system which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Melting furnace, 2 ... Material supply part, 3A ... 1st vaporization furnace, 3B ... 2nd vaporization furnace, 4 ... Catalyst material, 5A ... 1st catalyst furnace, 5B ... 2nd catalyst furnace, 6A ... 1st capacitor | condenser ( 1st oilifier), 6B ... 2nd condenser (2nd oilifier), 7 ... Cooling device for air cooling, 8 ... Oil tank, 9 ... Hopper part, 10 ... Input pipe, 11 ... Input control mechanism, 12 ... Off-gas blower, 13 ... rotary vane valve, 14 ... vane valve motor, 19 ... melting furnace electric heater section, 23 ... first electric heater section, 24 ... catalytic furnace electric heater section (catalyst heating mechanism), 26 ... Cooling pipe for driving part, 29 ... blower for tank, 43 ... second electric heater part

Claims (8)

A melting furnace for heating and melting the synthetic resin;
A first vaporizing furnace for generating a first vaporized gas by heating the synthetic resin melted in the melting furnace with a first electric heater unit formed of a Kanthal alloy material;
A first oilizer for cooling the first vaporized gas to produce a liquid first oil;
A second vaporizing furnace for generating a second vaporized gas by heating the first oil by a second electric heater unit formed of a Kanthal alloy material;
A second oilifier for cooling the second vaporized gas to produce a liquid second oil ,
The oil generation system, wherein the first electric heater unit and the second electric heater unit heat the furnace while maintaining the interior of the furnace at 450 ° C or higher . An oil making system according to claim 1 ,
A first catalytic furnace in contact with a catalyst material for transforming the first vaporized gas into a liquefiable gas;
A second catalytic furnace in contact with a catalyst material that transforms the second vaporized gas into a liquefiable gas;
The oil production system, wherein the first catalyst furnace and the second catalyst furnace include a catalyst heating mechanism for heating the catalyst material. The oil generation system according to claim 1 or 2 ,
Equipped with an air cooling system that cools the air and generates cool air,
An air-cooled heat exchanger in which the first oilizer and the second oilifier cool the first vaporized gas or the second vaporized gas by exchanging heat with the cold air from the air-cooling cooling device. An oiling system characterized by The oil generation system according to claim 3 ,
A driving part cooling pipe is provided for sending the cold air from the cooling apparatus for air cooling to a heat generating part in at least one drive mechanism of the melting furnace, the first vaporizing furnace, and the second vaporizing furnace. And oiling system. It is an oil-ized system as described in any one of Claim 1 to 4 , Comprising:
An oil tank that is connected to a lower portion of the second oil generator and collects the generated liquid second oil;
An oiling system comprising: a tank blower that is connected to an upper portion of the oil tank and sucks air inside. An oiling system according to any one of claims 1 to 5 ,
A material supply unit for introducing synthetic resin into the melting furnace,
The oil supply system, wherein the material supply unit includes a charging control mechanism that divides the synthetic resin into a predetermined amount and inputs the resin at predetermined time intervals. The oiling system according to claim 6 ,
The material supply unit is a hopper that stores synthetic resin;
A charging pipe connecting the lower part of the hopper part and the upper part of the melting furnace,
A rotary blade-shaped valve having a plurality of blade portions rotatably supported around a horizontal axis between the lower portion of the hopper portion and the input pipe;
An oiling system comprising: a blade-shaped valve motor that rotationally drives the rotating blade-shaped valve. The oil generation system according to claim 6 or 7 ,
The material supply unit can be charged with a synthetic resin in the upper part of the melting furnace,
An oiling system comprising an off-gas blower for sucking a gas in the melting furnace from a lower part of the melting furnace.

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