JPH0681837B2 - Oiler for synthetic resins - Google Patents

Description

Detailed Description of the Invention

[Industrial applications]

The present invention mainly relates to an apparatus for heating waste synthetic resin in a heating pot to turn it into oil.

[Prior art]

The thermoplastic synthetic resin can be liquefied by heating, liquefying, further gasifying, and then cooling. Utilizing this fact, a device for heating waste synthetic resin to turn it into oil has been developed. For example, Japanese Patent Publication No. 61-17879, Japanese Patent Publication No. 51-22776, Japanese Patent Publication No. 52-1949, and Japanese Patent Publication No. 60-49086 disclose oiling devices for waste synthetic resins. The oilification devices described in these publications heat waste synthetic resin into gas and condense the gas into oil. That is, in the oiling apparatus described in these publications, waste synthetic resin is thermally decomposed to be gasified, and the gas is cooled by a condenser to be oiled. The gasified components include heavy components that have not been fully decomposed. The heavy components are
When cooled in the condenser, it solidifies into a pitch. When the heavy components solidify in the condenser, it is extremely dangerous. This is because the outlet side of the heating reaction means is closed, the internal pressure rises, and the risk of explosion increases. That is, when the outlet of the heating reaction means is blocked, the internal pressure is abnormally increased by the gas generated one after another, and the gas explodes when the pressure exceeds the pressure resistance of the heating reaction means. This drawback can be eliminated by sending the gas from which the heavy components have been removed to the condenser. A device for removing the heavy components contained in the gas and returning it to the heating reaction means has already been developed (Japanese Patent Laid-Open No. 50-146680).
Issue). FIG. 6 shows an oiling device for synthetic resin described in this publication. This oiling device comprises a heating reaction means 51 and a condenser.
A cooling and heating heat exchanger 53 is connected to 52. The cooling / heating heat exchanger 53 has a double tubular shape, and has a cooling water passage 54 on the outer periphery and a gas passage 55 at the center. A baffle plate 56 is provided in the gas passage 55. Cooling channel 54
Cooling water is supplied to cool the inflowing gas.

[Problems to be Solved by the Invention]

In the cooling and heating heat exchanger having this structure, the gas collides with the baffle plate 56 and is cooled. Heavy components are liquefied in the cooled gas. The liquefied heavy component flows down and is returned to the heating reaction means 51. Therefore, the oiling device of this structure can remove the heavy components contained in the gas by the cooling and heating heat exchanger. However, the oiling device having this structure has a drawback that it is difficult to efficiently separate heavy components. The reason is that the cooling temperature of the gas is controlled only by the water temperature of the cooling water passage. That is, when the temperature of the cooling water is lowered, the heavy component can be effectively liquefied, but the amount of oil returned to the heating reaction means also increases, and a large amount of heat energy is consumed to gasify this again. There is. On the other hand, if the water temperature in the cooling water channel is increased, the heavy components contained in the gas cannot be effectively removed, and this has the drawback of clogging the piping and condenser of the next process. In particular, since the liquefied heavy component is returned to the heating reaction means from the passage of the high temperature gas, it is reheated in this process and the removal efficiency becomes low. The present invention was developed with the object of solving this drawback, and an important object of the present invention is to efficiently remove heavy components contained in gas and to use safely as an oil for synthetic resins. It is in providing an electronic device. Another important object of the present invention is to provide an oiling device for synthetic resin, which can easily bring the temperature control of a cooling heating heat exchanger for cooling gas to remove heavy components into an ideal state. It is in.

[Means for solving conventional problems]

In order to achieve the above-mentioned object, the oil liquefying apparatus for synthetic resin of the present invention has the following constitution. In particular, the oiling apparatus of the present invention is characterized by having the following configurations (f) to (i). (A) The oiling device comprises a heating reaction means 1 for heating synthetic resin to melt and gasify it, a condenser 5 for cooling gas to oilize it, and a cooling device for removing heavy components contained in gas. A heat and heat exchanger 36 and a hot water means 37 for supplying hot water to the cooling and heating heat exchanger 36 are provided. (B) The heating reaction means 1 includes a heating pot 2 that heats and gasifies the supplied synthetic resin, and a heating furnace 4 of the heating pot 2. (C) The cooling and heating heat exchanger 36 is connected between the heating reaction means 1 and the condenser 5. Cooling heating heat exchanger 36 The gas generated in the heating reaction means 1 is transferred to the condenser 5 after the heavy components are removed in the cooling heating heat exchanger 36. (D) In the casing 43 of the cooling and heating heat exchanger 36, an inlet 38 into which the gas of the heating reaction means 1 flows and an outlet 39 of the cooled gas are opened. (E) The inlet 38 of the cooling heating heat exchanger 36 is connected to the heating reaction means 1. (F) The casing 43 of the cooling / heating heat exchanger 36 is provided with a hot water channel 40 for heating the heavy component at the bottom thereof. (G) The hot water passage 40 of the cooling heating heat exchanger 36 is connected to the hot water means 37, and hot water is supplied from the hot water means 37. (H) In the cooling and heating heat exchanger 36, in order to cool the gas and liquefy the heavy components, the air pipe 41 is fixed through the casing 43 in an airtight manner. The air pipe 41 has an air opening at its end so that air is circulated inside and cooled. The outer surface of the air tube 41 is
This faces the gas passage in the casing so that the gas can be cooled. (I) At the bottom of the casing 43, below the discharge port 39, there is a wax outlet for discharging the liquefied heavy component.
42 is opened.

[Operation effect]

Referring to FIG. 1, which shows the preferred embodiment of the present invention, the operation of the synthetic resin oiling apparatus will be described. A synthetic resin is supplied to the heating pot 2. Waste synthetic resin is mainly used as the synthetic resin. When the synthetic resin is first supplied to the heating kettle 2, it is preferable to supply pre-oiled oil. The synthetic resin is heated while being immersed in oiled oil. By supplying the synthetic resin in this state, the synthetic resin can be efficiently heated. The waste synthetic resin is melted at the bottom of the heating furnace 4, and is further heated and gasified. The gasified synthetic resin is
It is sent to the reactor 31 through the gas transfer pipe 8. The gas sent to the reactor 31 is heated by the internal catalyst.
It contacts 33 and is broken down into small molecules. The gas decomposed in the reactor 31 is transferred to the cooling and heating heat exchanger 36 through the gas transfer pipe 8. The cooling heating heat exchanger 36 cools the supplied gas. The cooled gas liquefies the heavy components it contains. The liquefied heavy component is kept warm in the bottom hot water channel 40, and is smoothly discharged without solidifying. The gas from which the heavy components have been removed by the cooling and heating heat exchanger 36 is transferred to the condenser 5. The condenser 5 cools the supplied gas and liquefies it into oil. In the oilification apparatus of the present invention, the synthetic resin is decomposed into a gas state by the heating reaction means, the heavy component contained in the gas is removed by the cooling and heating heat exchanger, and the gas is transferred to the condenser. The cooling and heating heat exchanger cools the gas with air to liquefy the heavy components, and further keeps the liquefied heavy components in a warmed state in a hot water passage provided at the bottom. That is, the synthetic resin oilification apparatus of the present invention is provided with a cooling and heating heat exchanger capable of separately controlling the cooling temperature of the gas and the heating temperature of the heavy component with air and hot water. The air cools the gas to an optimum temperature for heavy component removal. The warm water warms the heavy component to a temperature at which the liquefied heavy component is prevented from being vaporized again or the liquefied heavy component is solidified. Those made into oil from waste synthetic resin contain a large amount of heavy oil and tar components, which are heavy components. The oiling device of the present invention which can effectively remove heavy components can be used safely. This is because it is possible to efficiently remove the heavy component and prevent the heating reaction means from exploding by clogging the pipe or the like. Further, the oilification device for synthetic resin of the present invention has a feature that the cooling and heating heat exchanger for removing heavy components can be controlled to an ideal temperature state. That is because the gas is cooled with air and the liquefied heavy component is heated with warm water. That is, since cooling and heating can be controlled separately with air and warm water, the heavy components are cooled with air to a temperature at which they can be efficiently separated, and the separated heavy components are heated to an appropriate temperature.
This is because it can prevent re-vaporization or solidification.

[Preferred embodiment]

Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify an oiling device for embodying the technical idea of the present invention, and the device of the present invention has the following materials, shapes, structures, and arrangements of components. Not specific to structure. The device of the present invention has various modifications within the scope of the claims. Further, in this specification, for easy understanding of the claims, the numbers corresponding to the members shown in the examples are referred to as "Claims of the claims" and "Means for solving the conventional problems. It is added to the members shown in "Column" and "Column of action and effect". However, the members shown in the claims are not limited to the members of the embodiment. The synthetic resin oilification apparatus shown in FIG.
, Reactor 31, cooling and heating heat exchanger 36, and hot water means 37
And a condenser 5 and a supply means. The heating reaction means 1 heats the waste synthetic resin in a closed space. The heating reaction means 1 includes a closed heating pot 2, a stirring member 3 that stirs the synthetic resin supplied to the heating pot 2, and a heating furnace 4 that heats the heating pot 2. The heating pot 2 is composed of a pot body 2A and a lid plate 2B. The heating pot 2 is entirely made of stainless steel. The heating pot 2 made of stainless steel has a function of a catalyst for decomposing the synthetic resin into low molecules. The hook main body 2A has an open upper end, and the upper end opening is a cover plate.
Blocked at 2B. The hook body 2A has a circular horizontal cross section. That is, the upper portion of the shuttle main body 2A has a cylindrical shape, and the bottom plate has a spherical shape. On the outer surface of the bottom plate of the pot main body 2A, heat absorbing fins 7 are fixed so as to efficiently absorb heat from the combustion gas of the burner. A radiating fin 30 for forced cooling is fixed to the upper portion of the hook main body 2A. The radiating fins 30 protrude to the outer periphery of the shuttle body 2A and are fixed in a flange shape. Radiation fin
30 is also used as a flange for connecting the cover plate 2B. Therefore, the lid plate 2B is connected to the hook main body 2A by a set screw that penetrates the heat dissipation fin 30 in the hook main body 2A. The heating pot 2 has an upper portion protruding outside the heating furnace 4. A gas transfer pipe 8 is connected to the cover plate 2B through the cover plate 2B. The gas transfer pipe 8 is connected to the condenser 5 via the reactor 31. The stirring member 3 includes a rotating shaft 9, blades 10, and a drive motor 11
It has and. The rotary shaft 9 is rotatably supported by vertically and airtightly passing through the center of the lid plate 2B of the heating pot 2. The blade 10 is fixed to the lower end of the rotating blade 9. The blades 10 are radially fixed to the rotating shaft 9. Feather 10
Is made of stainless steel like the heating pot 2. Feather
Reference numeral 10 has a shape in which the outer periphery approaches the inner surface of the heating pot 2. Further, the gas stirring blade 6 is fixed to the upper part of the rotating shaft 9. The gas stirring blade 6 is arranged at a position higher than the molten synthetic resin level. The gas stirring blade 6 stirs the atomized or gasified synthetic resin in the pot main body 2A. In the heating pot 2 shown in this figure, the heat insulating material 12 insulates the lower part of the heating furnace 4 and the upper part of the heating furnace 4 from the outside. The heat insulating material 12 is provided to make the temperature distribution inside the heating pot 2 uniform. Insulation 12
Suppresses the transfer of thermal energy from the fire burning in the heating furnace 4 to the heating pot 2. The inner surface of the heating pot 2 covered with the heat insulating material 12 suppresses the supply of heat energy as compared with the bottom portion. Therefore, less carbon is attached to the inner surface of this portion. The rotary shaft 9 is connected to a drive motor 11 and is rotated by the drive motor. The heating pot 2 contains zeolite, a metal catalyst or the like so that the waste synthetic resin can be efficiently oiled by heating. Nickel or stainless steel is used as the metal catalyst. Rotating shaft 9
The blade 10 may be made of a metal catalyst such as nickel or stainless. The heating furnace 4 includes a burner 35. Burner 35
Oil from waste synthetic resin is burned to heat the pot main body 2A. Therefore, no extra fuel is needed. The structure of the reactor 31 is shown in FIGS. 2 and 3. The reactor 31 is composed of a cylindrical casing 32 and a plate-shaped catalyst 33 housed in the casing 32. The casing 32 is hermetically sealed so that the gas supplied from the gas transfer pipe 8 does not leak to the outside. The casing 32 is heated by the exhaust heat from the heating pot 2. Therefore, the casing 32 penetrates the exhaust flue 20 of the heating furnace 4 and is fixed. Both ends of the casing 32 are connected to the exhaust flue 20
Protruding from. Flange is provided on both ends of the casing 32 that project. An opening / closing lid 34 is airtightly fixed to the flange with a screw. The casing 32 can be opened by removing the screw and removing the opening / closing lid 34. In the casing 32, a gas inlet and a gas outlet are opened on opposite sides of each other. The inlet is opened at the bottom and the outlet is opened at the top. The apparatus shown in FIG. 2 has three reactors 31 connected in series. The reactors 31 are arranged in the exhaust flue 20 side by side vertically. The gas generated in the heating kettle 2 is the reactor 31 in the lower stage.
Are sequentially transferred to the upper reactor 31. Therefore, the reactor 31 at the lowermost stage is connected to the heating pot 2, and the reactor 31 at the uppermost stage is connected to the condenser 5. The intermediate reactor 31 is connected in series to the lower and upper reactors 31. The reactor 31 of each stage is connected in series with the inlet opening at the bottom and the outlet opening at the top. By connecting this reactor 31, the gas sent from the heating kettle 2 can be effectively carbonized and discharged smoothly. Further, it is possible to prevent the liquefied component in the reactor 31 from being reheated to be gasified and clogging the gas transfer pipe 8. This is because the gas flows in the reactor 31 as follows. The gas flowing into the reactor 31 from the heating kettle 2 comes into contact with the catalyst 33 and is decomposed into low molecular weight compounds. Since both ends of the reactor 31 project to the outside of the exhaust flue 20 and the middle is located inside the exhaust flue 20, the gas supplied inside is convected and agitated. That is because the supplied gas is cooled at both ends of the casing 32 and heated in the middle. The agitated gas is effectively contacted with the catalyst 33 and decomposed into low molecular weight compounds, but a part of the gas is changed from a gas state to a liquid state. The gas decomposed to low molecular weight is transferred to the next step from the outlet of the uppermost reactor 31. The liquefied component inside is heated again in the middle of the casing 32 to be gasified and sent out from the upper outlet. Liquid components that cannot be gasified even when heated are fed back into the lower reactor 31. The internal temperature of the reactors 31 connected in series becomes higher in the lower stage. By the way, the device prototyped by the present inventor is the reactor at the bottom stage.
The internal temperature of 31 was about 360 ° C, the intermediate reactor 31 was 330 ° C, and the upper reactor 31 was 290 ° C. A plate-shaped catalyst 33 is housed inside the reactor 31. The plate-shaped catalysts 33 are stacked, for example, separated by several mm to several cm so that the gas can pass through the gap. Both sides of the catalyst 33 are bent and processed into a groove shape so that they can be easily stacked. Although not shown, the catalyst 33 may have a tubular shape or a rod shape. Further, the catalyst 33 can be formed by processing a metal into a fibrous shape or a granular shape, and storing the metal in the casing 32 in a state where a gap is formed between the fibers or the granular shapes. The cooling heating heat exchanger 36 is shown in FIGS. 4 and 5. The cooling and heating heat exchanger 36 includes a casing 43 into which gas is introduced from the heating reaction means 41. casing
43 has an inlet 38 into which gas is introduced from the heating reaction means 1 at its upper end, and an outlet 39 for cooled gas at its upper part slightly lower than the upper end. The inlet 38 is connected to the heating reaction means 1, and the outlet 39 is connected to the condenser 5. Further, the bottom of the casing 43 is provided with a hot water passage 40 for heating the heavy component and keeping the viscosity high.
The hot water passage 40 is composed of a double-structured bottom and a hot water pipe 44 arranged in parallel on the upper portion thereof. The upper surface of the hot water channel 40 provided at the bottom is inclined downward toward the wax outlet 42. The cooling and heating heat exchanger 36 having this structure has a feature that the heavy component accumulated at the bottom is heated to a low viscosity and can be smoothly discharged from the wax outlet 42. Also, by providing a hot water pipe some distance from the bottom,
There is also a feature that the vicinity of the bottom can be heated and the heavy components can be heated more effectively. The warm water passage 40 is connected to the warm water means 37, and the warm water is supplied from the warm water means 37. The hot water temperature is usually adjusted in the range of 50 to 98 ° C, preferably 65 to 95 ° C, more preferably 75 to 90 ° C so that the heavy component can be heated to a low viscosity. The gas supplied to the casing 43 is cooled by the outside air.
Therefore, the air pipe 41 is fixed by penetrating the casing 43 in an airtight manner. Outside air freely flows inside the air pipe 41. Therefore, both ends of the air pipe 41 are open. Also the air tube
The outer surface of 41 faces the gas passage in the casing 43. As shown in FIG. 4, by opening both ends of the air pipe 41, the gas in the casing 43 can be forcibly cooled with the simplest structure. However, the present invention does not specify the cooling structure of the air tube to this structure. For example, although not shown, a structure in which air pipes penetrating the casing are connected in parallel or in series, and a forced air blowing fan is connected thereto, and air is forcedly sent by the fan to cool, can be adopted. A large number of disk-shaped fins are fixed to the outer surface of the air tube 41 in order to widen the contact area with the gas. A wax outlet 42 is opened at the bottom of the casing 43. Since the wax outlet 42 discharges the liquefied heavy component, it is disposed at least below the gas discharge outlet 39. The wax outlet 42 is connected to the wax tank 45 via a pipe. The gas from which the heavy components have been removed by the cooling and heating heat exchanger 36 is sent to the condenser 5. The condenser 5 cools the gas component sent from the reactor 31 and liquefies it into oil. The condenser 5 is connected to an oil tank 22 for storing liquefied oil. The supply means shown in FIG. 1 includes a supply cylinder 13 for supplying synthetic resin to the heating kettle 2, a plurality of open / close valves 14 provided on the supply cylinder 13 for interrupting air and supplying waste synthetic resin, and an open / close valve.
A control member 15 for controlling the open / closed state of 14 is provided. In the supply cylinder 13, the waste synthetic resin is dropped to heat the reaction means 1
Is vertically connected to the lid plate 2B of the heating pot 2 so as to be supplied to the heating pot 2. The supply cylinder 13 shown in FIG. 1 is provided with a gate valve 18 at the upper end. Below the gate valve 18, two-stage series open / close valve
14 are provided. The supply cylinder 13 has a supply chamber 19 between the gate valve 18 and the upper opening / closing valve 14. 2-stage open / close valve 14
A temporary storage chamber 16 is provided between. The gate valve 18 includes an opening / closing plate 18A that moves laterally with respect to the supply cylinder 13, and a linear cylinder 18B that moves the opening / closing plate 18A. The opening / closing plate 18A is provided so as to move laterally through the supply cylinder 13. In the drawing, the opening / closing plate 18A is moved to the right and the supply cylinder 13
Closed and moved to the left to open the valve. The on-off valve 14 includes a valve seat 23, a rotary valve 24, and a reduction motor 25 that rotates the rotary valve 24. The valve seat 23 is fixed to the supply cylinder 13. The rotary valve 24 is fixed to the rotary shaft 26. The rotary shaft 26 penetrates the supply cylinder 13 in an airtight manner and is attached to the supply cylinder 13 via a bearing. As shown in FIG. 1, the rotary valve 24 comes into close contact with the valve seat 23 and opens when it is rotated upward. The rotary valve 24 is opened when it is rotated 90 degrees from the position shown in the figure. The valve seat is formed in a shape that comes into close contact when the rotary valve rotates upward. The opening / closing valves 14 provided above and below the temporary storage chamber 16 have the same shape. The volume of the temporary storage chamber 16 is designed to be substantially equal to or slightly larger than the supply chamber 19. This is because all the waste synthetic resin stored in the supply chamber 19 is temporarily supplied to the storage chamber 16. On the inner surface of the supply cylinder 13 which constitutes the temporary storage chamber 16, a metal catalyst is
27 is fixed. The metal catalyst 27 efficiently oilizes the waste synthetic resin heated in the temporary storage chamber 16. Further, in the temporary storage chamber 16, in order to preheat the waste synthetic resin stored therein and to close the on-off valve 14 surely,
Heated oil is supplied. The heated oil is supplied from the heating oil supply pipe 17. Therefore, the heating oil supply pipe 17 is connected to the temporary storage chamber 16. The heating oil supply pipe 17 temporarily supplies the oil, which has been oiled from the synthetic resin and is in a heated state, to the storage chamber 16. The heating oil supply pipe 17 is
The heated oil supply pipe 17 is connected to the outlet of the condenser 5 so that heated oil can be supplied. The heating oil supply pipe 17 connected here can supply the heating oil to the temporary storage chamber 16 when the supply valve 28 is opened. in this way,
When a part of the oil obtained by converting the waste synthetic resin into oil is temporarily supplied to the storage chamber 16, it is not necessary to separately heat the oil. However, as the oil supplied from the heating oil supply pipe 17 to the temporary storage chamber 16, it is possible to supply an oil other than the waste synthetic resin oilized. Heavy oil, light oil, kerosene, or the like can be used as the oil heated and supplied from the heating oil supply pipe to the temporary storage chamber. Further, at the beginning of using this apparatus, the oil obtained by oiling the waste synthetic resin cannot be obtained from the heating reaction means 1. Therefore, at the beginning of using this device, an oil different from the oiled oil is heated and supplied to the temporary storage chamber. A discharge pipe is connected to the upper part of the temporary storage chamber 16. The exhaust pipe 29 exhausts the gas in the temporary storage chamber 16. Open / close valve 14
When oil is supplied to the temporary storage chamber 16 with the valve closed, gas corresponding to the amount of oil and the amount of gas generated from the waste synthetic resin by the heating oil is discharged. When the hot oil is supplied, a part of the waste synthetic resin is gasified in the temporary storage chamber. This gas more efficiently disposes of residual air in the temporary storage chamber. The temperature of the oil supplied from the heating oil supply pipe 17 to the temporary storage chamber 16 is preferably adjusted within the range of 150 to 200 ° C. The control member 15 that opens and closes the open / close valve 14 includes the open / close valve 14 and the supply valve.
It controls the open / closed state of the gate valve 18 and the gate valve 18. The supply valve 28 is opened with the upper and lower open / close valves 14 closed, in other words, opened with the temporary storage chamber 16 airtightly closed,
The heated oil is supplied to the temporary storage chamber 16. The open / close valve 14 is provided by opening one of the upper and lower sides so that the supply cylinder 13 does not open the heating reaction means 1 to the atmosphere.
The waste synthetic resin supplied to 13 is supplied to the heating reaction means 1. When the upper opening / closing valve 14 is opened, the waste synthetic resin is supplied from the supply chamber 19 to the temporary storage chamber 16. When the lower opening / closing valve 14 is opened, waste synthetic resin is supplied from the temporary storage chamber 16 to the heating reaction means 1.

[Brief description of drawings]

FIG. 1 is a partial sectional side view of a synthetic resin oiling apparatus showing an embodiment of the present invention, FIGS. 2 and 3 are sectional views showing a reactor, and FIGS. 4 and 5 are cooling heating heats. FIG. 6 is a vertical sectional view of the exchanger, and FIG. 6 is a schematic sectional view showing an example of a conventional oiling device for synthetic resin. 1 ... Heating reaction means, 2 ... Heating kettle, 2A ... Kettle body, 2B ... Lid plate, 3 ... Stirring member, 4 ... Heating furnace, 5 ... Condenser, 6 ... Gas stirring blade, 7 ... Fins, 8 ... Transfer tube, 9 ... Rotating shaft, 10 ... Blade, 11 ... Drive motor, 12 ... Insulation material, 13 ... Supply cylinder, 14 ... Open / close valve, 15 ... Control Members, 16 ... Temporary storage chamber, 17 ... Heating oil supply pipe, 18 ... Gate valve, 18A ... Open / close plate, 18B ... Direct acting cylinder, 19 ... Supply chamber, 20 ... Exhaust flue, 22 …… Oilization tank, 23 …… Valve seat, 24 …… Rotary valve, 25 …… Deceleration motor, 26 …… Rotary shaft, 27 …… Metal catalyst, 28 …… Supply valve, 29 …… Discharge pipe, 30… … Radiation fins, 31 …… Reactor, 32 …… Casing, 33 …… Catalyst, 34 …… Opening / closing lid, 35 …… Burner, 36 …… Cooling heating heat exchanger, 37 …… Hot water means, 38 …… Flow Inlet, 39 ... Outlet, 40 ... Warm water , 41 …… air pipe, 42 …… wax outlet, 43 …… casing, 44 …… hot water pipe, 45 …… wax tank, 51 …… heating reaction means, 52 …… condenser, 53 …… cooling heating heat exchange Vessel, 54 …… cooling water channel, 55 …… gas channel, 56 …… baffle plate.

Claims (1)

[Claims] 1. An oiling apparatus for synthetic resin, characterized by having the configurations (f) to (i) in the apparatus having the following configurations (a) to (e). (A) An oiling device for synthetic resin comprises a heating reaction means 1 for heating synthetic resin to melt and gasify it, a condenser 5 for oiling gas, a cooling heating heat exchanger 36, and a hot water means 37. It has and. (B) The heating reaction means 1 includes a heating pot 2 and a heating furnace 4 of the heating pot 2. (C) The cooling heating heat exchanger 36 is connected between the heating reaction means 1 and the condenser 5, and the gas generated in the heating reaction means 1 removes heavy components from the cooling heating heat exchanger 36. It is then transferred to the condenser 5. (D) In the casing 43 of the cooling and heating heat exchanger 36, an inlet 38 into which the gas of the heating reaction means 1 flows and an outlet 39 of the cooled gas are opened. (E) The inlet 38 of the cooling heating heat exchanger 36 is connected to the heating reaction means 1. (F) The casing 43 of the cooling / heating heat exchanger 36 is provided with a hot water channel 40 for heating the heavy component at the bottom thereof. (G) The hot water passage 40 of the cooling heating heat exchanger 36 is connected to the hot water means 37, and hot water is supplied from the hot water means 37. (H) In the cooling and heating heat exchanger 36, the casing 43 is airtightly penetrated and the air pipe 41 is fixed, the air port is opened at the end of the air pipe 41, and the outer surface of the air pipe 41 is inside the casing. Facing the gas passage. (I) A wax outlet 42 is opened below the discharge port 39 at the bottom of the casing 43.