JP2005330365A - Method for treating polymer compound and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for forming a polymer treated compound, by which the polymer treated compound is reacted with a chemical by using a high-temperature and high-pressure reactor while preventing reverse flow of gas to the upstream side of an extruder for material supply and kneading a polymer compound with the chemical, and an apparatus therefor. <P>SOLUTION: The chemical is injected to the cylinder of the extruder 1 for material supply while extruding the polymer compound by using the extruder 1 for material supply, the mixture of the polymer compound and the chemical is discharged to the high-temperature and high-pressure reactor 100 while kneading the polymer compound with the chemical in the cylinder of the extruder 1 for material supply and reacted to form the polymer treated compound. In this operation, an extruder 1 having an L/D of ≥25 is used as the extruder 1 for material supply and the injection position (p) of the inlet of the chemical is arranged at the tip side of the position of L/D=220 of the extruder 1 for material supply. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a polymer compound treatment method and apparatus for modifying a polymer into a modification reaction, a decomposition reaction, a crosslinking point or a molecular chain of a crosslinked polymer to form a thermoplastic resin or wax, and in particular, an extrusion for material supply. The present invention relates to a novel polymer compound processing method and apparatus for reacting a polymer with a supercritical drug using a machine.

  In recent years, waste disposal costs are increasing year by year as environmental issues become important. The momentum of recycling and recycling is also increasing for polymers. In such a movement, material recycling is progressing because thermoplastic resin can be molded again with increased fluidity when heated. However, on the other hand, thermosetting resins, cross-linked polymers, elastomers, and the like are difficult to recycle materials because they are not fluidized due to the three-dimensional network of molecules and cannot be molded even when heated. For this reason, except for some thermal recycling, in many cases, it is disposed of by landfill or the like.

  Regarding such thermosetting resins and cross-linked polymers, the movement to carry out material recycling has increased, and various studies have been reported. For example, the three-dimensional network structure in the molecule is destroyed to make it thermoplastic, and this can be reused, or it can be waxed by cutting the polymer main chain to make it low molecular, and this can be added to resins, building materials, etc. It is considered to be reused as an agent.

  In order to make such an approach practical, a process for continuously processing the polymer is essential, and the use of an extruder is suitable for this. Heat and pressure are required to break down the three-dimensional network in the molecule of a stable thermosetting resin or cross-linked polymer, and heat and pressure are required. Can be obtained. The same applies to waxing. In the case of thermoplasticizing, a thermoplastic resin or a chemical is often added together with a thermosetting resin or a crosslinked polymer, but such an additive can be easily introduced by using an extruder.

  For example, in Patent Document 1, crosslinked polyethylene and water are supplied to a material supply extruder, and water is supercritical or subcritical in the material supply extruder, that is, a temperature of 200 to 1000 ° C. and a pressure of 2 to 100 MPa. Shows a method of extruding to a thermoplastic material.

  In Patent Document 2, a cross-linked polymer is extruded from a material supply extruder and introduced into a reactor together with a high-temperature and high-pressure fluid to produce a reactant, and the reactant is introduced into a separator to separate the reactant into a high-temperature fluid. It is shown that the reaction product is discharged to the outside by a degassing extruder.

JP 2001-253967 A Japanese Patent Laid-Open No. 2002-249618

  In Patent Document 1, water acts as an agent for thermoplasticizing a thermosetting resin or a crosslinked polymer by a chemical reaction. However, in these conventional examples, an effective means for maintaining a high pressure is not shown, and therefore, a large amount of a thermosetting resin or a crosslinked polymer cannot be treated industrially.

  On the other hand, in patent document 2, in order to isolate | separate them after mixing a reactive agent and a thermosetting resin, the separation tank for isolate | separating the mixture of a polymer and gas is provided, and in order to maintain a high-pressure state, A pressure regulating valve is used upstream.

  However, this method does not consider a method for preventing the backflow of gas to the upstream side of the material supply extruder.

  In examining the practical application of the apparatus of Patent Document 2, the present inventors have found that depending on the conditions, the gas may flow backward to the upstream side of the material supply extruder and further be ejected from the hopper. .

  The object of the present invention is to reverse the flow of gas to the hopper upstream of the material supply extruder in the method of injecting the drug into the cylinder of the material supply extruder while extruding the polymer compound using the material supply extruder. The polymer compound and the drug are kneaded in the cylinder of the material supply extruder while the polymer compound and the drug are kneaded, and the mixture of the polymer compound and the drug is discharged into the reaction vessel at a high temperature and high pressure to cause the reaction. Another object of the present invention is to provide a method and apparatus for producing a processed product of a polymer compound.

  In view of the above-described problems, the present invention realizes an apparatus in which a chemical gas does not flow back to a hopper upstream of a material supply extruder when a mixture of a reactive agent and a resin is kneaded in the material supply extruder. It was made by examining various techniques for achieving this.

  That is, the invention of claim 1 injects the drug into the cylinder of the material supply extruder while extruding the polymer compound using the material supply extruder, and the polymer compound and the drug are extruded into the material supply extruder. In a method of producing a processed product of a polymer compound by discharging the mixture of the polymer compound and the drug into a high-temperature and high-pressure reaction vessel while kneading in a machine cylinder Use of an extruder with L / D = 25 or more as the machine, and further processing the polymer compound in which the injection port of the drug is on the tip side of L / D = 20 from the end of the reducer side of the material supply extruder cylinder Is the method.

  The invention according to claim 2 is the treatment of the polymer compound according to claim 1, wherein a portion where the pressure applied to the polymer compound is 1 MPa or more exists L / D = 5 or more upstream from the injection port of the drug. Is the method.

  Invention of Claim 3 is the processing method of the high molecular compound of Claim 1 or 2 with which the reaction container is connected to the cylinder of the extruder for material supply.

  Invention of Claim 4 is the processing method of the high molecular compound in any one of Claims 1-3 in which the pressure reduction means is connected to this reaction container, in order to take out a polymer processed material from the reaction container.

  Invention of Claim 5 is a processing method of the high molecular compound in any one of Claims 1-4 whose said reaction container is a flow-type reaction container.

  According to a sixth aspect of the present invention, a polymer-treated product and a drug are introduced into a degassing extruder by the decompression means to separate the polymer compound-treated product and the drug, and the separated polymer process It is a processing method of the high molecular compound in any one of Claims 1-5 which shape | mold a thing with the extruder for deaeration.

  The invention of claim 7 is an obtuse substance separation step of separating impurities from the drug after being separated by a degassing extruder, and storing the drug from which the impurities have been separated into the material supply extruder. It is a processing method of the high molecular compound in any one of Claims 1-6 which has the chemical | medical agent storage process to introduce | transduce.

  The invention according to claim 8 is the polymer compound processing method according to claim 6 or 7, wherein a vent box is connected to the degassing extruder in order to separate the drug by the degassing extruder.

  The invention according to claim 9 includes an impurity separation step of separating the drug from the drug after separating the drug in the vent box, and a drug storage step of storing the drug from which the impurity has been separated and introducing the drug into the material supply extruder The method for treating a polymer compound according to claim 8, comprising:

  Invention of Claim 10 has the cooling process which cools the polymer processed material extruded with the extruder for deaeration, and the cutting process which cut | disconnects this cooled said polymer processed material. It is a processing method of the high molecular compound of description.

  The invention according to claim 11 is the polymer compound processing method according to any one of claims 1 to 10, wherein the reaction in the reaction vessel is any one of a denaturation reaction, a decomposition reaction, and a crosslinking cleavage reaction. .

  The invention of claim 12 is the method for treating a polymer compound according to any one of claims 1 to 11, wherein the polymer compound is a crosslinked polymer and the drug is an alcohol or a mixture containing alcohols.

  The invention according to claim 13 is the polymer compound according to any one of claims 1 to 12, wherein the polymer compound pulverized inside the material supply extruder and the agent to be reacted with the polymer compound are mixed and stirred at a high temperature and a high pressure. It is a processing method.

  The invention of claim 14 uses an impurity separation tank as an impurity separation means for separating impurities in the separated drug, stores the drug from which the impurities have been separated, and introduces it into the material supply extruder. It is a processing method of the high molecular compound in any one of Claims 6-13 which has a chemical | medical agent storage tank as a chemical | medical agent storage means.

  Invention of Claim 15 is the processing method of the high molecular compound in any one of Claims 1-14 whose decompression means connected to the extruder for material supply is a discharge valve.

  The invention according to claim 16 is the polymer compound processing method according to any one of claims 1 to 15, wherein a resistor having a plurality of holes is used as the pressure reducing means.

  The invention of claim 17 injects the drug into the cylinder of the material supply extruder while extruding the polymer compound using the material supply extruder, and the polymer compound and the drug are injected into the material supply extruder. In an apparatus for producing a processed product of a polymer compound by discharging and reacting the mixture of the polymer compound and the drug into a high-temperature and high-pressure reaction vessel while kneading in a cylinder, a material supply extruder Cylinder diameter and length are L / D = 25 or more, and a polymer injection port is formed on the tip side of L / D = 20 from the speed reducer side end of the material supply extruder cylinder Compound processing equipment.

  The eighteenth aspect of the present invention is the polymer compound processing apparatus according to the seventeenth aspect, wherein a deaeration extruder is connected to the reaction vessel via a decompression means.

  A nineteenth aspect of the present invention is the polymer compound processing apparatus according to the eighteenth aspect, wherein a vent box for separating the polymer processed product and the drug is connected to the upstream side of the degassing extruder.

  The invention according to claim 20 is the polymer compound according to claim 19, wherein the drug separated in the vent box is returned to the drug tank in which impurities are separated in the impurity separation tank and the drug is fed to the material feeding extruder. It is a processing device.

  As described above, while extruding the polymer compound using the material supply extruder, the drug is injected into the cylinder of the material supply extruder, and the polymer compound and the drug are injected into the cylinder of the material supply extruder. In a method for producing a processed product of a polymer compound by discharging and reacting the mixture of the polymer compound and the drug into a high-temperature and high-pressure reaction vessel while kneading in an L / D as a material supply extruder = If the extruder of 25 or more is used, and the injection port of the drug is further attached to the front end side than L / D = 20 of the cylinder of the material supply extruder, the drug in the hopper located upstream of the material supply extruder It becomes possible to obtain a processed product of the polymer compound without backflow of the gas.

  In the present invention, the polymer refers to a crosslinked polymer, a synthetic polymer of a thermosetting resin such as a plastic or an elastomer, a natural polymer such as lignin, cellulose, or a protein, and a mixture of a synthetic polymer and a natural polymer. Is included. Further, a material mainly composed of a polymer, such as shredder dust, mixed with other materials may be used.

  In particular, when a cross-linked polymer is used as the polymer compound and an alcohol or a mixture containing alcohol is used as the drug, such a device configuration functions effectively. Further, such an apparatus configuration is effective when chemically treating a polymer continuously under a high pressure state such as a supercritical condition in order to facilitate a reaction by a drug.

  According to the present invention, in the processing of a polymer compound using a material supply extruder for kneading a polymer and a chemical in a high temperature and high pressure reaction vessel, L / D = 25 or more as a material supply extruder. In addition, if the injection port of the drug is further on the tip side than the L / D = 20 position of the material supply extruder, it is possible to prevent the hopper gas on the upstream side of the material supply extruder from flowing backward. Meanwhile, while the polymer compound and the drug are kneaded in the cylinder of the material supply extruder, the polymer compound and the drug mixture are extruded and reacted in a high-temperature and high-pressure reaction vessel to obtain a processed product of the polymer compound. It is possible to provide a method and an apparatus for generating.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a flowchart showing an example of a cross-linked polyethylene cross-linking treatment apparatus according to the present invention.

  The cross-linked polyethylene pulverized into pellets is fed into the material supply extruder 1 through a hopper 13. The material supply extruder 1 uses a cylinder diameter D = 60 mm, a length L = 2040 mm, and L / D = 34. On the other hand, the ethanol required for the reaction passes from the drug tank 18 through the drug tank valve 17 and is pressurized by the drug injection pump 15 and heated by the drug heater 14 from the speed reducer 1d side of the material supply extruder 1. Injection is performed at a pressure of 5 MPa at a position of L / D = 20. The injection position p is downstream of the position where the cross-linked polyethylene is pressurized to 1 MPa or higher in the material supply extruder 1 and densified, and the length of the pressure part is L / D = 5 or more. Yes, thereby preventing upstream leakage due to vaporization of the drug. As the material supply extruder 1, a single-screw extruder was used in order to reduce the cost of the extruder and to make it an apparatus capable of withstanding high pressure.

  The drug injection pump 15 needs to be pressurized to a pressure higher than the internal pressure of the material supply extruder 1, and the temperature of the polymer heated by the material supply extruder 1 is not lowered by the drug heater 14. It is desirable to raise the temperature to the extent. In the material supply extruder 1, the charged cross-linked polyethylene and the injected chemical are mixed and stirred by the screw 1a. At this time, if at least a part of the material supply extruder 1 is set to a temperature and pressure conditions in which the ethanol as a medicine is in a supercritical state, the cross-linking polyethylene reaction proceeds sufficiently, and a good polymer treatment is achieved. Things are obtained. Here, in order to ensure a sufficient reaction time, a flow reaction container 100 having a volume of 50 L was connected to the discharge side of the extruder 1.

  The mixture of the polymer processed product of crosslinked polyethylene and the chemical ethanol, which is plasticized in the material supply extruder 1 and the flow reaction vessel 100, is decompressed by a decompression valve 11 (or a discharge valve) as decompression means. In order to lower the pressure stepwise, a breaker plate 31 is attached as a resistor having a plurality of holes, and the pressure of the resin is reduced stepwise. Further, a deaeration extruder 2 is connected to the subsequent stage, where the viscous liquid polymer processed product is extruded in the discharge direction of the extruder 2 by the screw 2a, and the gas is a back vent vent box with a low pressure. By flowing to 8, the polymer processed product and the drug are separated. The vent box 8 is heated by a heater 10 that is an electric heater, and the polymer processed product is maintained at a temperature at which the polymer processed product exhibits fluidity. The inside of the vent box 8 is maintained at a pressure slightly higher than the normal pressure and lower than that of the reaction vessel 100, whereby the polymer processed product is easily discharged out of the vent box 8.

  In the vent box 8, the light gas is separated from the upper part of the tank, and even when the polymer processed material flows backward, the polymer processed substance is accumulated under the tank, and the degassing extrusion is carried out by its own weight from the hole provided in the lower part of the tank It is sent to the machine 2 and molded by the die 3 at the tip. The degassing extruder 2 can be a single-screw or twin-screw extruder. Here, it is formed as a thread-like strand 5, and is cooled and solidified to substantially normal temperature by the cooler 4. The strand 5 becomes a pellet 7 by the strand cutter 6. The degassing extruder 2 is provided with a vent 59 as shown in FIG. 2 in order to completely remove the chemical from the resin. The chemical is sucked from the vent 59 through the valve 91 by the blower 19 and supplied to the combustion device 20. You may make it incinerate exhaust.

  On the other hand, ethanol, which is a chemical separated from the polymer-treated product in the vent box 8, becomes normal pressure via the tank pressure adjusting valve 12 and is sent to the impurity separation tank 16. In the impurity separation tank 16, impurities generated during the reaction and mixed in ethanol as a drug are separated based on the difference in boiling point. Ethanol is returned to the chemical tank 18, and impurities are sucked by the blower 19 and incinerated by the combustion device 20.

  Such an apparatus configuration is particularly effective in the case where the vaporized chemical flows backward to the upstream side when performing the process of mixing the polymer compound and the gaseous chemical at a high temperature and high pressure in an extruder in a high temperature and high pressure state. . If a sufficient cylinder length is not secured on the upstream side of the alcohol injection position as in Patent Documents 1 and 2, when high gas pressure is reached, sealing with a polymer treatment product is insufficient, causing gas to leak upstream or upstream Resin spouts into the hopper 13 at once.

  On the other hand, if the cylinder length on the upstream side from the alcohol injection position p is sufficiently large, the length of the portion where pressure is applied to the polymer processed material can also be sufficiently large, so that the backflow of gas to the upstream side can be prevented. .

  In the polymer processed product thus obtained, when the polymer processed product in the molten state and the gaseous chemical agent are not continuously released via the pressure reducing valve 11, but the gas is discharged intermittently, In order to expand, the polymer processed material which is a liquid is entrained and ejected vigorously. Even in this case, since the volume of the vent box 8 is sufficiently large, a buffering action works against a change in pressure, thereby suppressing pressure fluctuations in the resin discharge direction. In this way, continuous and smooth molding becomes possible.

  FIG. 3 is a system diagram showing a pressure adjusting mechanism of a vent box provided in the subsequent stage of the material supply extruder according to the present invention.

  The mixture of the polymer processed product and the drug discharged from the material supply extruder 1 in FIG. 1 is depressurized from the pressure in the material supply extruder to 1 to several tens of atmospheres by the pressure reducing valve 11 and then degassed. It enters into the extruder 2 and is separated into a polymer processed product which is a viscous liquid and a gaseous drug. During decompression by the decompression valve 11, the gaseous drug component that has been compressed at a high pressure expands and is ejected into the vent box 8 along with this. At this time, since the volume of the vent box 8 is larger than the volume of gas to be ejected, it is possible to suppress pressure fluctuations to some extent, but by providing the following mechanism here, further stabilization of pressure is achieved. It becomes possible.

  That is, the pressure in the vent box 8 is measured by the pressure gauge and the pressure transmitter 70, and this is transferred to the pressure control device 71 via the signal transmission line 72. The pressure control device 71 transmits a valve opening / closing signal to the tank pressure adjusting valve 12 via the signal transmission line 72 according to the pressure signal sent. The tank pressure adjusting valve 12 is an air-operated valve, and adjusts the opening of the valve according to a signal. At this time, the opening degree of the valve is adjusted so that the internal pressure of the vent box 8 becomes constant.

  As another pressure adjustment method, the pressure can be adjusted by cooperation of the pressure reducing valve 11 and the tank pressure adjusting valve 12. In this case, in addition to the pressure gauge and pressure transmitter 70 described above, a means for measuring the differential pressure before and after the pressure reducing valve 11 is installed, and control is performed so that both the former and the latter are constant. When both the pressure reducing valve 11 and the tank pressure adjusting valve 12 are controlled, if both are controlled only by the tank pressure signal, the valve movement interferes and the maintenance of the pressure becomes unstable. It is desirable to use the differential pressure before and after the control of the valve 11 and the pressure of the vent box 8 as a signal to control the tank pressure adjusting valve 12.

  By these mechanisms, the pressure in the vent box 8 is always kept substantially constant, and the molding means of the degassing extruder 2 can perform continuous and homogeneous extrusion molding.

  When such an apparatus is used, the processing amount of the cross-linked polyethylene can be processed by continuous stable operation for 5 hours or more in the range of 2 to 100 kg / h per unit time allowed by the discharge capacity of the extruder. There was no backflow of alcohol when the pressure increased to 15 MPa.

  In the apparatus in the embodiment of FIG. 1, a screw 1a in which the length of the pressurizing portion is L / D = 4 is used. As a result, there was no problem in stable operation at an alcohol injection pressure of 5 MPa or less. When the pressure became 13 MPa or more due to pressure fluctuation, a slight amount of alcohol mist was generated on the hopper side.

  FIG. 4 is a flowchart showing a comparative example of a cross-linked polyethylene cross-linking treatment apparatus as a comparison of the present invention.

  The alcohol injection position p in the embodiment of FIG. 1 was set to a position of L / D = 15 from the upstream side.

  When this apparatus was used, when alcohol was injected at 5 MPa, mist of alcohol was generated in the hopper 13 located upstream from the injection position p, and the alcohol flowed back. When the pressure was higher than that, the operation was stopped because there was a danger of a large amount of alcohol spouting from the hopper 13 side. Therefore, stable continuous operation could not be continued for a long time.

1 is a system diagram showing an overall configuration of a polymer compound processing apparatus according to an embodiment of the present invention. It is a system diagram which shows other embodiment of this invention. It is a schematic diagram of the chemical | medical agent separation tank and tank pressure adjustment mechanism concerning this invention. It is a system diagram which shows the comparative example with respect to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Extruder for material supply 2 Extruder for deaeration 3 Die 4 Cooler 5 Strand 6 Strand cutter 7 Pellet 8 Vent box 10 Vent box heater 11 Pressure reducing valve (pressure reducing means)
12 Tank Pressure Adjustment Valve 13 Raw Material Hopper 14 Drug Heating Heater 15 Drug Injection Pump 16 Impurity Separation Tank 17 Drug Tank Valve 18 Drug Tank 19 Blower 20 Combustion Device 31 Breaker Plate (Decompression Unit)
70 Pressure gauge and pressure transmitter 71 Pressure control device 72 Signal transmission line 100 Flow-type reaction vessel

Claims (20)

  While extruding the polymer compound using the material supply extruder, the drug is injected into the cylinder of the material supply extruder, and the polymer compound and the drug are kneaded in the cylinder of the material supply extruder. In a method for producing a processed product of a polymer compound by discharging and reacting the mixture of the polymer compound and the drug into a high-temperature and high-pressure reaction vessel, L / D = 25 or more as a material supply extruder A method for treating a polymer compound, wherein an extruder is used, and the injection port of the drug is further on the tip side than L / D = 20 from the end of the reducer side of the material supply extruder cylinder.   The method for treating a polymer compound according to claim 1, wherein a portion having a pressure applied to the polymer compound of 1 MPa or more is present at an upstream side of the drug injection port of L / D = 5 or more.   The processing method of the high molecular compound of Claim 1 or 2 with which the reaction container is connected to the cylinder of the extruder for material supply.   The method for treating a polymer compound according to any one of claims 1 to 3, wherein a decompression means is connected to the reaction vessel in order to take out the polymer-treated product from the reaction vessel.   The method for treating a polymer compound according to any one of claims 1 to 4, wherein the reaction vessel is a flow-type reaction vessel.   The polymer-treated product and the drug are introduced into the degassing extruder by the pressure reducing means to separate the polymer compound-treated product and the drug, and the separated polymer-treated product is degassed extruder. The processing method of the high molecular compound in any one of Claims 1-5 shape | molded by.   After separating the drug with a degassing extruder, an obtuse substance separating step for separating impurities from the drug, and a drug storing step for storing the drug separated from the impurity and introducing it into the material supply extruder The processing method of the high molecular compound in any one of Claims 1-6.   The method for treating a polymer compound according to claim 6 or 7, wherein a vent box is connected to the degassing extruder in order to separate the drug by the degassing extruder.   9. The method according to claim 8, further comprising: an impurity separation step of separating the drug from the drug after separating the drug in the vent box; and a drug storage step of storing the drug from which the impurity has been separated and introducing the drug into the material supply extruder. A method for treating a polymer compound.   The processing of the high molecular compound in any one of Claims 6-9 which has the cooling process which cools the polymer processed material extruded with the extruder for deaeration, and the cutting process which cut | disconnects this cooled said polymer processed material. Method.   The method for treating a polymer compound according to any one of claims 1 to 10, wherein the reaction in the reaction vessel is any one of a denaturation reaction, a decomposition reaction, and a cross-linking cleavage reaction.   The method for treating a polymer compound according to any one of claims 1 to 11, wherein the polymer compound is a crosslinked polymer and the drug is an alcohol or a mixture containing an alcohol.   The processing method of the high molecular compound in any one of Claims 1-12 which mix and stir the high molecular compound and the chemical | medical agent made to react with this high molecular compound pulverized inside the extruder for material supply at high temperature and high pressure.   An impurity separation tank is used as an impurity separation means for separating impurities in the separated medicine, and the medicine storage tank is used as a medicine storage means for storing the medicine from which the impurities have been separated and introducing the medicine into the material supply extruder. The processing method of the high molecular compound in any one of Claims 6-13 which has these.   The method for treating a polymer compound according to any one of claims 1 to 14, wherein the pressure reducing means connected to the material supply extruder is a discharge valve.   The method for treating a polymer compound according to claim 1, wherein a resistor having a plurality of holes is used as the decompression means.   While extruding the polymer compound using the material supply extruder, the drug is injected into the cylinder of the material supply extruder, and the polymer compound and the drug are kneaded in the cylinder of the material supply extruder. In the apparatus for discharging the polymer compound and the drug mixture into a high-temperature and high-pressure reaction vessel and reacting them to produce a processed product of the polymer compound, the cylinder diameter and length of the material supply extruder are: L / D = 25 or more, and the injection port of the drug is formed from the terminal on the speed reducer side of the extruder cylinder for material supply to the tip side of L / D = 20. Processing equipment.   The polymer compound processing apparatus according to claim 17, wherein a degassing extruder is connected to the reaction vessel through a decompression unit.   The apparatus for treating a polymer compound according to claim 18, wherein a vent box for separating the polymer-treated product and the drug is connected to the upstream side of the degassing extruder. The polymer compound processing apparatus according to claim 19, wherein the chemical separated in the vent box is returned to the chemical tank in which impurities are separated in the impurity separation tank and the chemical is supplied to the material supply extruder.

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