WO2014200141A1

WO2014200141A1 - Continuous process type apparatus and method for treating waste insulating oil containing polychlorinated biphenyl

Info

Publication number: WO2014200141A1
Application number: PCT/KR2013/006305
Authority: WO
Inventors: 오완호
Original assignee: Oh Wan Ho
Priority date: 2013-06-12
Filing date: 2013-07-15
Publication date: 2014-12-18
Also published as: KR20140145229A; KR101490304B1

Abstract

The present invention relates to a continuous process type apparatus and method for treating waste insulating oil containing polychlorinated biphenyl, the apparatus comprising: a pre-treatment bath in which waste insulating oil is fed and then stored and warmed; a mixing and reaction device in which the warmed waste insulating oil is mixed with melted metal sodium while passing through a Venturi tube, and then is first desalted by a chemical reaction of polychlorinated biphenyl contained in the waste insulating oil and the melted sodium, wherein the melted metal sodium is fed into a center portion of the Venturi tube from a reagent supply device connected to the center portion of the Venturi; a cyclone treatment bath in which, while the waste insulating oil and the melted sodium are mixed and second desalted in the procedure of downward transferring the first desalted waste insulating oil in a spiral type, a discharge gas is upwardly discharged by rising vortexes generated in the center of the inside and the desalted waste insulating oil is downwardly discharged; and a post-treatment bath in which, while the second desalted waste insulating oil is fed inside and then cooled at room temperature, sodium chloride and various kinds of precipitates generated at the time of a desalting treatment are precipitated and the waste insulating oil is transferred to a treatment oil storage bath, through a plurality of precipitation and separation baths.

Description

Waste Insulating Oil Continuous Process Apparatus and Method Containing Polychlorinated Biphenyls

The present invention relates to an apparatus and a method for treating waste insulating oil containing polychlorinated biphenyls (PCBs) in an environmentally friendly and harmless continuous process, and more particularly, to a waste insulating oil containing polychlorinated biphenyls (PCBs). Venturi is passed through the pretreatment tank, which is oil-injected and stored from the waste transformer, condenser, safety device, and breaker, and is heated to a certain temperature, and the venturi tube, in which the heated waste insulating oil is gradually narrowed from both sides to the center. Metal sodium, a dechlorination reagent, is melted from the reagent supply device connected to the center of the tube, and is naturally mixed and mixed due to the pressure difference according to the flow rate of the waste insulating oil passing through the center of the venturi tube. A mixed reaction apparatus in which polychlorinated biphenyls and molten sodium are chemically reacted and subjected to primary desalination, and waste insulating oil subjected to primary desalination. Is discharged to the inside and the waste insulating oil and molten sodium are mixed in the process of spirally moving downward along the inner circumferential surface to generate the vortex that rises in the inner center as the second desalination treatment causes the exhaust gas to be discharged upward, and the desalted waste insulating oil Sodium chloride and various sediments produced during desalting are precipitated by successively overflowing through a plurality of sedimentation tanks separated by a multi-stage while the cyclone treatment tank discharged to the inside and the secondary desalted waste insulating oil are introduced into the inside and cooled to room temperature. The waste insulating oil of the sedimentation tank located at the end is sent to the treatment oil storage tank, and the precipitated sodium chloride and various sediment are discharged to the outside after treatment, and the exhaust gas generated from the pretreatment, the cyclone treatment tank and the after treatment is filtered and harmful. Composed of exhaust gas treatment unit for discharging gas component by pyrolysis It relates to a waste insulating oil continuous process type processing apparatus and method containing polychlorinated biphenyls.

Polychlorinated biphenyls (PCBs) are widely used for insulating oils, heating mediums, lubricants, and plasticizers, and thus have high value for use. Therefore, as a substance used for various purposes, it is basically a compound in which hydrogen bonded to ten hydrogen atom positions in biphenyl (C ₆ H ₅ -C ₆ H ₅ ) is substituted with 1 to 10 chlorine atoms. There may be 242 kinds of isomers, but in actual use, about 100 kinds are not decomposed even when heated, and are insoluble in water and have excellent electrical insulation, and have been used as insulating oils for transformers and capacitors.

However, polychlorinated biphenyls used as insulating oils for transformers and capacitors are introduced into sewage treatment plants after use, causing environmental destruction and changes in ecosystems. These polychlorinated biphenyls are used without any environmental measures. Was found to be a serious pollutant, and its production and use has been discontinued worldwide since 1976. However, 1 million tonnes of polychlorinated biphenyls have already been released to the world, and the amount of disposal has reached 2 million tonnes. It is known that a large amount of oil containing the polychlorinated biphenyl component to be treated is urgently required for its efficient decomposition method.

According to the US Environmental Protection Agency (US EPA), more than 90 kinds of technologies are reported to be able to process polychlorinated biphenyls. Until now, technologies for treating harmful chemicals such as polychlorinated biphenyls are largely biological treatment technology and thermal It is known that there are treatment techniques, physical or chemical treatment techniques, and the like, and biological treatments using enzymes effective for the treatment of polychlorinated biphenyls can be applied to various media contaminated with polychlorinated biphenyls and produce residues. This has the advantage of minimal but long-term treatment time and processing efficiency is greatly affected by the polychlorinated biphenyl concentration, the thermal treatment technology has the advantage that the processing speed is fast and the volume of the treated waste is small However, there is a limit to applying to liquid and gaseous medium and relatively high cost It is disadvantageous that additional treatment of residues generated after treatment is required.In case of incineration of polychlorinated biphenyl-containing products in a general manner, polyaromatic hydrocarbons such as dioxins, which are more toxic than polychlorinated biphenyls, are generated as by-products. It has been reported that incineration has a limitation in safely treating insulating oils containing polychlorinated biphenyls. Especially, it is known that harmful dioxins are produced and discharged. It is often exported and consigned or stored for a long time, and in the case of long-term storage, polychlorinated biphenyl is discharged into the environment from polychlorinated biphenyl-containing waste, which also contaminates the surrounding environment. The disadvantage of being low The chemical decomposition method by the oxidizing agent can be decomposed in several hours, but the corrosion of the device material by the oxidizing agent is a problem, and the oxidative decomposition method by the supercritical water has a problem that the energy consumption is too high. As with thermal treatment technology, there is a disadvantage that additional treatment of residues generated after treatment is required, but it is fast and can be applied to various media contaminated with polychlorinated biphenyls, and high concentration of polychlorinated biphenyls can be treated. There is an advantage to use.

On the other hand, as a conventional technique for the treatment method of the polychlorinated biphenyl as described above, Korean Patent Publication No. 10-1000462 discloses that the polychlorinated biphenyl from the container of the waste transformer, capacitor, safety device, breaker A predetermined amount of waste insulating oil is stored and preheated to a predetermined temperature, and the preheated waste insulating oil from the pretreatment tank is transferred and stored in a predetermined amount. And a reaction tank for mixing and stirring the polychlorinated biphenyl contained in the waste insulating oil with molten sodium and desalting the molten sodium, and the desalted waste insulating oil from the reaction tank is transferred to a predetermined amount and stored at room temperature for cooling. Specific gravity while allowing sodium chloride and various precipitates to precipitate during desalination The waste insulation oil floated on the upper part was sent to the treatment oil storage tank, and the post-treatment tank to which sodium chloride and various precipitates precipitated because of its high specific gravity was sent to a separate recovery tank, and the sodium chloride and various deposits transferred from the after-treatment tank were filtered through a screen provided therein. While separating the internal temperature is maintained above the melting point of the sodium metal so that the metal sodium contained in the precipitate is remelted and sent back to the reactor to be reused, and the exhaust gas generated in the pre-treatment tank, the reaction tank and the after-treatment tank It characterized by consisting of an exhaust gas treatment unit for passing through the exhaust gas treatment device stored in the liquid sodium at a certain water level to desalination of the polychlorinated biphenyls contained in the exhaust gas and to filter the filtered gas to discharge the purified gas. Waste insulating oil treatment plant containing polychlorinated biphenyl And a method have been disclosed.

In the prior art, while a predetermined amount of waste insulating oil is stored in the reaction tank, metal sodium, which is a dechlorination reagent, is added to the reaction vessel and melted, so that polychlorinated biphenyl contained in the waste insulating oil and the molten liquid sodium are chemically desalted. In addition, the metal sodium is not melted well in the reaction tank and is not evenly mixed with the waste insulating oil, so the processing efficiency is very low and the processing time is long, and the unmelted solid metal sodium remains in the reaction tank, There was a problem that a safety accident such as a fire occurred due to the explosive reaction.In addition, the aftertreatment tank consists of a single cylindrical casing having a cone shape at the bottom, and the waste insulating oil floated on the upper side by a simple precipitation method is sent to the treatment oil storage tank. Sodium chloride, metal sodium and various precipitates precipitated in a separate recovery tank Since the separation effect of the sediment is not only low, but the long time left for the precipitation in one reservoir, there is a problem that the efficiency of the entire treatment process is lowered and the treatment takes a long time.

The present invention is to solve the above problems, but the waste insulating oil containing polychlorinated biphenyl is treated by a chemical decomposition treatment method using a metal sodium dispersion method, the waste insulating oil through a venturi tube provided in the mixing reaction apparatus The molten sodium from the reagent supply device connected to the venturi tube is continuously introduced and mixed by the pressure difference according to the flow rate change of the waste insulating oil passing through the inside of the central part of the venturi tube, and the polychlorinated biphenyl of the waste insulating oil is continuously passed. The super-melt sodium is chemically reacted to make the first desalination treatment, and the first desalination treatment waste oil is discharged into the cyclone treatment tank so that the polychlorinated biphenyl of the waste insulation oil is secondly desalted and mixed evenly with the molten sodium. The exhaust gas is discharged upward by generating a vortex that rises in the Secondary desalination waste insulating oil through two sedimentation tanks is cooled continuously at room temperature and continuously overflows. Sodium chloride and various sediments produced during desalting are precipitated and the waste insulating oil stored in the sedimentation tank located at the last is treated oil storage tank. The purpose of the present invention is to remove the polychlorinated biphenyls contained in the waste insulating oil safely and quickly in a continuous process by desalting.

In order to achieve this purpose, a pre-treatment tank in which waste insulating oil containing polychlorinated biphenyl is oiled from a container, stored in a container, and heated at a predetermined temperature, and a venturi tube having a narrower inner diameter as the heated waste insulating oil moves from both sides to the center part. As the metal sodium, which is a dechlorination reagent, is melted from the reagent supply device connected to the center of the venturi tube while passing through, it is naturally introduced and mixed by the pressure difference according to the flow rate of the waste insulating oil passing through the inside of the center of the venturi tube. The mixed reaction device in which the polychlorinated biphenyl and the molten sodium contained in the waste insulating oil are chemically reacted and subjected to the first desalination treatment, and the waste insulating oil in the process of discharging the first desalted waste insulating oil inward and spirally downward along the inner circumferential surface. Polychlorinated biphenyls in secondary desalination by molten sodium cause vortices to rise to the inner center The exhaust gas is discharged upward and the desalted waste insulating oil is discharged downward, and the secondary desalted waste insulating oil is introduced into the inside and cooled at room temperature. Sodium chloride and various sediments produced during the desalination process are precipitated, and the waste insulating oil of the sedimentation tank located at the end is sent to the treatment oil storage tank, and the pretreated tank and the cyclone are discharged to the outside. It is a feature of the present invention that the exhaust gas treatment unit for filtering the exhaust gas generated in the treatment tank and the after-treatment tank and thermally decomposes harmful gas components.

As described above, according to the present invention, the waste insulating oil containing polychlorinated biphenyl is treated by a chemical decomposition treatment method using a metal sodium dispersion method, while the waste insulating oil is continuously passed through the venturi tube provided in the mixing reactor. The molten sodium from the reagent supply device connected to the venturi tube is naturally introduced and mixed by the pressure difference due to the change in the flow rate of the waste insulating oil passing through the inside of the central part of the venturi tube. The reaction is first desalted, and the first desalted waste insulating oil is discharged to the inside of the cyclone treatment tank so that the polychlorinated biphenyl of the waste insulating oil is mixed with molten sodium evenly to generate the second desalted and rise to the inner center. Discharge the exhaust gas upward, and desalination through a plurality of sedimentation separation tanks divided into multiple stages of the after-treatment tank As waste oil is cooled at room temperature and continuously overflows, the sodium chloride and various precipitates generated during desalting are precipitated and the waste insulation oil stored in the sedimentation tank located at the end is sent to the treatment oil storage tank to be safely and quickly used in a continuous process. Desalination of the polychlorinated biphenyls contained in it has the effect of maximizing the overall treatment efficiency.

1 is a schematic view showing the overall processing of the waste insulating oil continuous process treatment apparatus according to the present invention

Figure 2 is a schematic cross-sectional view of the mixing reaction device in the waste oil continuous process type processing apparatus according to the present invention

Figure 3 is a schematic cross-sectional view of the cyclone treatment tank and the after-treatment tank in the waste oil continuous process type processing apparatus according to the present invention

Figure 4 is a schematic cross-sectional view of the impeller means in the waste oil continuous process type processing apparatus according to the present invention

Figure 5 is a schematic cross-sectional view of the stirring reinforcing means in the waste insulating oil continuous process type processing apparatus according to the present invention

1. Waste Insulating Oil Continuous Processing System 2. Container

3. Pretreatment tank 4. Oil repellent pump

5. Pretreatment tank inlet 6. Heating heater

7. Pretreatment tank outlet 8. Flow rate sensor

9. Pretreatment tank gas outlet 10. Mixing reaction device

11. Venturi tube 12. Mixing reaction inlet tube

13. Transfer pump 14. Mixed reaction discharge pipe

15. Central section 16. Reagent supply unit

17. Reagent supply tube 18. Reagent inlet

19. Heating means 20. Refined oil inlet

21. Nitrogen gas injection port 22. Cyclone treatment tank

23. Cyclone inlet 24. Cyclone gas outlet

25. Center pipe 26. Cyclone discharge pipe

27. taxiway 28. collision avoidance

29. Post Treatment Tank 30. Precipitation Separation Tank

31. Bulkhead 32. Post Treatment Tank Outlet

33. Treatment oil storage tank 34. Hopper section

35. Screw

feeders

36a, 36b. Discharge drain

37. Post-treatment tank gas outlet 38. Exhaust gas treatment unit

39. Purification filter 40. Ignition coil

41. Safety barriers 42. Impeller means

43. Impeller piping 44. Central axis

45a, 45b. Fixed wing 46. Impeller body

47. Rotary blade 48. Stirring means

49. Agitating pipe 50. One side plate

51. Other side plate

Hereinafter, the preferred configuration according to the present invention will be described in detail with reference to the drawings.

The waste insulating oil continuous processing apparatus 1 according to the present invention includes polychlorinated biphenyls (PCBs) used for insulation of waste transformers, capacitors, safety devices, and breakers, as shown in FIGS. 1 to 5. It is a device that treats contained waste insulating oil in an environmentally and harmless continuous process type, and waste insulating oil containing polychlorinated biphenyl is introduced into and stored from a vessel (2) such as a waste transformer, a condenser, a safety device, or a breaker and The central part 15 of the venturi tube 11 is passed through the pretreatment tank 3 to be heated to a temperature, and the heated waste insulating oil passes through the venturi tube 11 having a narrower inner diameter from both sides toward the central portion 15. The metal sodium, which is a dechlorination reagent, is melted from the reagent supply device 16 connected to the mixture, and is naturally mixed by the pressure difference according to the flow rate of the waste insulating oil passing through the inside of the central portion 15 of the venturi tube 11. Being The process of mixing the reaction mixture 10 in which the polychlorinated biphenyl and the molten sodium contained in the waste insulating oil are chemically reacted and subjected to the first desalination treatment, and the waste insulating oil subjected to the first desalination treatment are discharged inward and helically transported downward along the inner peripheral surface. The cyclone treatment tank 22 discharges the exhaust gas upward and discharges the desalted waste insulating oil downward by generating a vortex that rises in the inner center while mixing the waste insulating oil with molten sodium in the secondary desalination process. The treated waste insulating oil is introduced into the inside and cooled at room temperature, and continuously overflows through a plurality of sedimentation separation tanks 30 partitioned in multiple stages. Sodium chloride and various sediments generated during desalting are precipitated and the sedimentation separation tank located at the end. The waste insulating oil of (30) is sent to the treatment oil storage tank 33, and the post-treatment tank 29, in which the precipitated sodium chloride and various precipitates are discharged to the outside, It consists of pre-treatment group (3) and ssayikeuron treatment tank 22 and the exhaust gas processing unit 38 for filtering the exhaust gas generated in the tank 29 and then discharged by thermal decomposition of harmful gas components.

In the pretreatment tank 3, waste insulating oil containing polychlorinated biphenyl is introduced into and stored from a vessel 2 such as a waste transformer, a condenser, a safety device, or a breaker as shown in FIG. The pretreatment tank 3 has a predetermined cylindrical casing, and the oil repellent pump 4 is oil-repelled from a container 2 such as a normal transformer, a condenser, a safety device, and a breaker by an oil repelling pump 4 at an upper portion of the pretreatment tank 3. Pre-treatment tank inlet (5) through which the waste insulating oil flows is formed so that a predetermined amount of waste insulating oil flows into the pretreatment tank (3), and a normal heating heater (6) is installed therein. The waste insulating oil is heated to about 100 ~ 150 ℃ to prevent the explosion of molten sodium due to moisture during chemical reaction between the waste insulating oil and molten sodium due to the evaporation of moisture contained in the waste insulating oil. When passing through the venturi tube 11 of the reactor 10 is a pre-treatment to achieve a fast chemical reaction with molten sodium in a short time, the pre-treatment tank outlet 7 is formed on the other side lower portion of the pretreatment tank (3) In order to send the warmed waste insulating oil to the mixing reaction device 10 and the upper side of the pretreatment tank 3 is equipped with a normal flow rate sensor 8, when a predetermined amount of waste insulating oil flows into the container ( The operation of the oil repellent pump 4 is controlled so that the waste insulating oil repelled from 2) no longer flows in.

In addition, the pretreatment tank 3 has a pretreatment gas outlet 9 formed on the upper side of the pretreatment tank 3 so that various exhaust gases including oil vapor and moisture generated during the warming process are discharged through the pretreatment gas discharge port 9. It is to be sent to (38).

As shown in FIGS. 1 and 2, the mixing reactor 10 includes a venturi tube 11 in which waste insulating oil heated to a predetermined temperature in a pretreatment tank 3 is gradually narrower from both sides to a central portion 15. Passing through the inside of the central portion 15 of the venturi tube 11 in a molten state of the metal sodium, which is a dechlorination reagent, from the reagent supply device 16 connected to the central portion 15 of the venturi tube 11. Due to the pressure difference caused by the change in the flow rate of the waste insulating oil, it is naturally mixed evenly, and the polychlorinated biphenyl and the molten sodium contained in the waste insulating oil are chemically reacted to perform the first desalination treatment. On one side, the mixed reaction inlet pipe 12 is connected to the waste insulating oil heated by the transfer pump 13 installed on the pipe in a state connected to the pretreatment tank outlet 7 of the pretreatment tank 3 through the pipe. Mixed reaction inlet pipe at constant flow rate (12) The venturi tube 11 is passed through, and the other side of the venturi tube 11 is connected to the mixed reaction discharge pipe 14 connected to the cyclone treatment tank 22, and the venturi tube 11 is The inner diameter is gradually narrowed from one side to the inner central portion 15, and the inner diameter of the central portion 15 has a minimum value, and the inner diameter is gradually widened from the central portion 15 to the other side, and the venturi tube 11 is formed. In the central portion 15 of the reagent supply pipe 17 of the reagent supply device 16 interposed vertically from the outer upper portion is installed in communication with the interior of the venturi tube 11 is shown in FIG. As described above, the waste insulating oil supplied from the mixed reaction inlet pipe 12 having a relatively large diameter passes through the inner central portion 15 of the venturi tube 11 having a smaller diameter. Bernoulli during discharge to According to the principle, as the flow rate of the waste insulating oil passing through the central portion 15 increases instantaneously, the pressure is lowered, and a pressure difference is generated between the inside of the venturi tube 11 and the reagent supply tube 17, thereby reducing the reagent from the reagent supply tube 17. The molten sodium stored in the supply device 16 is naturally input by a predetermined amount so that the waste insulating oil and the molten sodium are mixed. Accordingly, the polychlorinated biphenyl contained in the waste insulating oil undergoes a chemical reaction with the molten sodium. It is supposed to be desalted.

In addition, the mixing reaction device 10 is one or a plurality of impeller means 42 are installed in the mixed reaction discharge pipe 14 connected to the venturi tube 11, as shown in Figure 4 waste oil and dechlorination The reagent is to be stirred and mixed evenly, the impeller means 42 is provided with an impeller pipe 43 having the same inner diameter as the mixing reaction discharge pipe 14 and the impeller pipe 43 in the center of the impeller pipe 43 A central axis 44 is provided, and a plurality of fixed

blades

45a and 45b are radially attached to the front and rear ends of the central axis 44, respectively, and a central portion of the central axis 44 is provided. The impeller body 46 is rotatably installed, and a plurality of rotary blades 47 are fixedly attached to the outer circumferential surface of the impeller body 46, and the waste insulating oil in which the dechlorination reagent from the mixed reaction discharge pipe 14 is mixed. On the inlet side of the impeller piping 43 While passing through the fixed blade 45a, the rotary blade 47, and the fixed blade 45b provided on the outlet side, the rotary blade 47 is naturally rotated by the flow rate of the waste insulating oil so that the waste insulating oil and the dechlorination reagent are evenly distributed. It is intended to be stirred and mixed.

Meanwhile, as shown in FIG. 5, the mixing reaction device 10 includes one or more stirring reinforcing means 48 connected to the mixing reaction discharge pipe 14 connected to the venturi pipe 11 to remove waste insulating oil. The stirring mixture of the chlorine reagent is further strengthened, but the stirring reinforcing means 48 is provided with a stirring pipe 49 having the same inner diameter as the mixing reaction discharge pipe 14 and one side of the inner circumferential surface of the stirring pipe 49. There is a plurality of one side plate 50 is fixedly installed at regular intervals along the stirring pipe 49, the other side of the inner peripheral surface of the stirring pipe 49, the plurality of other side plate 51 is a constant interval along the stirring pipe 49 One side plate of the waste insulating oil impregnated with the dechlorination reagent from the mixed reaction discharge pipe 14 is installed so that the other side plate 51 is positioned between the plurality of one side plate 50. Zigzag between zigzag 50 and other side plate 51 While passing through ag), waste insulating oil and dechlorination reagent are mixed and stirred evenly.

In addition, the reagent supply device 16 is a cylindrical casing having a cone-shaped pointed bottom portion and a reagent inlet 18 is installed on the upper portion thereof so that a predetermined amount of dechlorine reagent is used as metal sodium or metal. Lithium is introduced and stored, and the reagent supply pipe 17 having a predetermined length protrudes vertically downward at a lower end formed in a cone shape in the reagent supply device 16, and a conventional banding heater on the outer circumferential surface of the reagent supply pipe 17. Heating means 19, such as, etc. are installed so that the temperature inside the reagent supply pipe 17 is kept warm above the melting point (97.9 ℃) of the metal sodium, and the lower end of the reagent supply pipe 17 is venturi tube (11) Is installed through the central portion 15 of the venturi tube 11 and communicates with the inner side of the venturi tube 11 while the metal sodium from the reagent supply device 16 is molten. As it is to be injected.

In addition, the reagent supply device 16 has a refined oil inlet 20 formed on one side thereof, and a predetermined amount of refined insulating oil is introduced therein through the refined oil inlet 20 to remove metal sodium, which is a dechlorination reagent, in the air. In order to prevent contact with moisture and to explode, the nitrogen gas inlet 21 is formed on the other side of the reagent supply device 16 so that metal sodium and refined oil are stored and stored in the reagent supply device 16. Nitrogen gas is filled in the upper part to block the inflow of external air.

Meanwhile, the mixing reaction device 10 is supplied from the reagent supply device 16 because the blocking safety wall 41 is surrounded by a predetermined interval at the outer periphery of the venturi tube 11 and the reagent supply device 16. It is designed to prevent safety accidents due to explosive chemical reactions caused by contact of molten sodium with moisture, which is a dechlorination reagent.

As shown in FIGS. 1 and 3, the cyclone treatment tank 22 melts the waste insulating oil in the process of discharging the primary desalted waste insulating oil from the mixing reaction device 10 to the inside and transporting the spiral downward along the inner circumferential surface. Sodium is evenly mixed to generate a vortex that rises in the inner center as the second desalination treatment discharges the exhaust gas upward and discharges the desalted waste insulating oil downward, but the cyclone treatment tank 22 has a sharp bottom portion. A cylindrical casing having a cone shape, and a cyclone inlet port 23 connected to the other end of the mixed reaction discharge pipe 14 is formed at one upper portion thereof, and a cyclone gas outlet 24 is formed at the upper portion of the inner central portion thereof. The center tube 25 is formed to be fixed vertically and the center tube 25 has an upper portion protruded to the outer side of the cyclone treatment tank 22 and the lower portion is open It is installed spaced apart from the inner lower portion of the cyclone treatment tank 22, the lower portion of the cyclone treatment tank 22 is connected to the cyclone inlet 23 of the predetermined length of the cyclone discharge pipe 26 is installed and connected to the cyclone inlet 23 An induction furnace 27 is formed above the inner circumferential surface of the treatment tank 22 so that the primary desalted waste insulating oil discharged into the cyclone treatment tank 22 through the mixed reaction discharge pipe 14 is the induction furnace 27. By generating a vortex that rises inside the central tube 25 of the cyclone treatment tank 22 in the process of being transported down along the inner circumferential surface of the cyclone treatment tank 22 through the oil vapor and water generated during the desalination reaction along the vortex Various exhaust gases, including the upward movement, are to be sent to the exhaust gas treatment unit 38 through the cyclone gas outlet 24 of the upper portion of the central pipe (25).

In addition, the cyclone treatment tank 22 is a secondary desalination treatment and lowered to the bottom of the cone-shaped cyclone discharge pipe while mixing the waste insulating oil and molten sodium evenly in the process of the primary desalted waste insulating oil is transported downward spirally. It is to be sent to the after-treatment tank 29 through 26 and the lower portion of the cyclone discharge pipe 26 is a cyclone treatment tank in the state of being put into the first sedimentation separation tank 30 partitioned in the after-treatment tank (29) It is designed to naturally discharge the secondary desalted waste insulating oil from 22).

On the other hand, the cyclone discharge pipe 26 is a secondary desalting treatment discharged downward through the cyclone discharge pipe 26 is installed at a predetermined interval spaced apart by a predetermined distance between the collision prevention port 28 made of a cone-shaped cap with a lower point at the lower end portion. Waste insulating oil is not immediately discharged to the sedimentation separation tank 30, but discharged to the sedimentation separation tank 30 while the discharge speed is reduced by the collision prevention port 28, the first sedimentation separation tank 30 of the after-treatment tank (29) Sodium chloride and metal sodium and various precipitates that are settled in the inner lower portion is prevented from being mixed again by collision with the desalted waste insulating oil discharged through the cyclone discharge pipe 26.

In addition, the cyclone treatment tank 22 has one or a plurality of impeller means 42 connected to the cyclone discharge pipe 26 installed vertically connected to the lower end as shown in FIG. It is to be stirred and mixed evenly, the impeller means 42 is provided with an impeller pipe 43 having the same inner diameter as the cyclone discharge pipe 26 and the central axis along the impeller pipe 43 in the center of the impeller pipe 43 (44) is provided and a plurality of fixed blades (45a, 45b) are fixed to the front and rear ends of the central axis 44, respectively, and the impeller body in the center of the central axis (44) (46) is rotatably installed, and a plurality of rotary blades (47) are fixedly attached to the outer circumferential surface of the impeller body (46) so that the waste insulating oil mixed with dechlorination reagent from the cyclone discharge pipe (26) is impeller pipe. The rotary blade 47 is naturally rotated by the flow rate of the waste insulating oil while passing through the fixed blade 45a and the rotary blade 47 and the fixed blade 45b provided on the outlet side of the inlet. And dechlorination reagents are to be mixed and stirred evenly.

On the other hand, the cyclone treatment tank 22 is one or more stirring reinforcing means 48 is installed in the cyclone discharge pipe 26 is connected to the bottom vertically as shown in Figure 5, the waste insulating oil and dechlorination reagent In order to further enhance the stirring mixture of the, but the stirring reinforcing means 48 is provided with a stirring pipe 49 having the same inner diameter as the cyclone discharge pipe 26, a plurality of inner peripheral surface side of the stirring pipe 49 One side plate 50 is fixedly installed at a predetermined interval along the stirring pipe 49, and a plurality of other side plates 51 are fixedly installed at a predetermined distance along the stirring pipe 49 on the other side of the inner circumferential surface of the stirring pipe 49. The other side plate 51 is located between the plurality of one side plate 50 so that the waste insulating oil mixed with the dechlorination reagent from the cyclone discharge pipe 26 is the one side plate 50 and the other side of the impeller pipe 43. Between the plates 51 While passing through the zigzag type, the waste insulating oil and the dechlorination reagent are uniformly stirred and mixed.

As shown in FIGS. 1 and 3, the post-treatment tank 29 includes a plurality of sedimentation separation tanks separated by a multi-stage while the secondary desalted waste insulating oil from the cyclone treatment tank 22 is introduced into the inside and cooled to room temperature. Sodium chloride and various precipitates generated during the desalination treatment by continuously overflowing through 30) are precipitated and continuously overflowed, and the waste insulating oil stored in the sedimentation separation tank 30 positioned at the end is separated into a separate treatment oil storage tank 33. The various sediments, such as sodium chloride and sodium metal precipitated at the bottom of the sedimentation separation tank 30 to be discharged to the outside, the post-treatment tank 29 is a long rectangular tubing casing left and right The bottom surface of the plurality of partitions 31 are provided at regular intervals, and the upper end of the plurality of partitions 31 is provided to be spaced apart from the inner upper surface of the after-treatment tank 29 by a predetermined distance. While being sequentially installed so that the height of the partition wall 31 is lowered, a plurality of sedimentation separation tank 30 is divided into a multi-stage set in the after-treatment tank 29, the plurality of sedimentation separation tank 30 The sedimentation separation tank (30) located in the first is installed so that the lower end of the cyclone discharge pipe 26 provided in the cyclone treatment tank 22 is located at the inner middle height 2 is discharged downward through the cyclone discharge pipe (26) The solid desalted waste oil is placed in the sedimentation separation tank (30), which is located first, and is cooled at room temperature to produce solid sodium chloride and the remaining molten sodium remaining in the cyclone treatment tank (22). Various precipitates, including metal sodium produced by recrystallization, are precipitated to the bottom and the specific gravity is small so that the waste insulating oil floating on the upper side exceeds the height of the partition wall 31. Through the plurality of sedimentation separation tanks 30 in a manner that overflows to 30 and precipitates again, most of the various sediments contained in the secondary desalted waste insulating oil are removed, and the sedimentation separation tank 30 located at the end ), The after-treatment tank outlet 32 is formed so that the waste insulating oil from which sediment is removed through the after-treatment tank outlet 32 is sent to and stored in the treatment oil storage tank 33 and is regenerated after a conventional method. It is intended to be used for oil.

In addition, the post-treatment tank 29 has a hopper portion 34 protruded integrally formed at the lower portion of the sedimentation separation tank 30 located first, and one side end portion of the screw feeder 35 at the hopper portion 34. It is installed in the penetrating state to the inside, and various precipitates including sodium chloride and metal sodium, which are precipitated in the sedimentation separation tank 30 located first, are gathered and stored in the hopper part 34 and various kinds of screw feeders 35 are used. Sediment is to be discharged to the outside.

In addition, the post-treatment tank 29 is a lower surface portion of the hopper portion 34 protruding from the lower portion of the sedimentation tank 30 located first and the lower surface portion of the remaining sedimentation tank 30 by a conventional valve, respectively. The discharge drains 36a and 36b which are opened and closed are installed to go through the post-treatment process and then discharge and process various residues remaining in the after-treatment tank 29 to the outside.

In addition, the after-treatment tank 29 has a post-treatment tank gas outlet 37 formed on the upper side of the post-treatment tank 29, and various exhaust gases including oil vapor and moisture generated in the post-treatment tank 29 are post-processing tank gas outlets 37, to be sent to the exhaust gas treatment unit 38.

As shown in FIG. 1, the exhaust gas treatment unit 38 filters exhaust gas generated in the pretreatment tank 3, the cyclone treatment tank 22, and the aftertreatment tank 29, and thermally decomposes harmful gas components. The exhaust gas generated in the pretreatment tank 3, the cyclone treatment tank 22, and the aftertreatment tank 29 is collected, and passes through a purification filter 39 made of ordinary activated carbon or the like, and the harmful components are filtered out. It is supposed to pass through the ignition coil 40 heated to about 300 ~ 500 ℃, so that the filtered exhaust gas passes through the ignition coil 40, polychlorinated biphenyl and various harmful gas components are thermally decomposed and burned. The exhaust gas is to be released to the atmosphere in an environmentally harmless state.

On the other hand, the waste insulating oil continuous process type processing apparatus 1 according to the present invention can be mounted on a vehicle such as a conventional truck or a truck, so that the waste insulating oil can be processed in a mobile manner.

The action of the present invention is as follows.

The waste insulating oil containing polychlorinated biphenyl contained in a container (2) such as a conventional waste transformer, a condenser, a safety device, and a breaker is desalted by using the waste insulating oil continuous processing apparatus 1 according to the present invention. In the case of environmentally harmless decomposition process in a continuous process method, waste insulating oil containing polychlorinated biphenyl contained in each container 2 is oil-repelled by the oil-repellent pump 4 as shown in FIG. When the waste oil is sent to the pretreatment tank 3 and a predetermined amount of waste insulation oil flows into the pretreatment tank 3, the waste insulation oil is approximately 100 to 150 ° C. by heating the heating heater 6 installed inside the pretreatment tank 3. In order to prevent the explosion of molten sodium due to moisture during chemical reaction between the waste insulating oil and the molten sodium due to the evaporation of the moisture contained in the waste insulating oil, the waste insulating oil is removed from the venturi tube 11 of the mixed reaction device 10. For passing Pre-treat with molten sodium for a quick chemical reaction in a short time.

Waste insulation oil heated to a predetermined temperature as described above is sent to the mixing reaction device 10 in a state having a constant flow rate by the transfer pump 13 and through the mixing reaction inlet pipe 12 of the mixing reaction device 10 In the middle of the venturi tube 11, the waste insulating oil supplied from the mixed reaction inlet tube 12 having a relatively large diameter becomes smaller in diameter as shown in FIG. According to Bernoulli's principle, the flow rate of the waste insulating oil passing through the central portion 15 increases momentarily while the pressure decreases immediately after passing through the mixed reaction discharge pipe 14 having a large diameter. 11, a pressure difference is generated between the inside of the venturi tube 11 and the reagent supply tube 17 connected to the central portion 15 of the venturi tube 11 to store the molten sodium stored in the reagent supply device 16 from the reagent supply tube 17. Naturally input by a certain amount The waste insulating oil and the molten sodium are mixed, so that the polychlorinated biphenyl contained in the waste insulating oil is subjected to the first desalination treatment while chemically reacting with the molten sodium.

In addition, the primary desalted waste insulating oil is discharged inward through the induction furnace 27 of the cyclone treatment tank 22 via the mixed reaction discharge pipe 14, and is transported downward along the inner circumferential surface of the cyclone treatment tank 22. As shown in FIG. 3, the inner central tube 25 of the cyclone treatment tank 22 generates rising vortices and various exhaust gases including oil vapor and water generated during desalting reaction along the vortices are moved upward. It is sent to the exhaust gas treatment unit 38 through the cyclone gas outlet 24 in the upper part of the pipe 25, and the waste insulating oil and the molten sodium are evenly mixed while the primary desalted waste insulating oil is transported downward in a spiral manner. The secondary desalination is carried out to the bottom of the cone shape and sent to the aftertreatment tank 29 through the cyclone discharge pipe 26.

The secondary desalted waste insulating oil discharged downward through the cyclone discharge pipe 26 is stored in the first precipitation separation tank 30 provided inside the after-treatment tank 29 and is cooled at room temperature to be generated during desalination treatment. Various precipitates including solid sodium chloride and metal sodium produced by unreacted molten sodium remaining in the cyclone treatment tank 22 are recrystallized, are precipitated to the bottom, and the specific gravity of the waste insulating oil floated on the upper partition walls 31 If the height of the excess flows through the sedimentation tank 30 in the next column overflows the sedimentation tank 30 in a manner that the sediment is precipitated again, the various kinds of sediment contained in the secondary desalted waste insulating oil The waste insulating oil from which sediment is removed is passed through the after-treatment tank outlet 32 of the sedimentation separation tank 30 positioned at the end and sent to the treatment oil storage tank 33, and stored according to a conventional method. After the refining process is used as a regeneration oil, etc., various precipitates including sodium chloride and metal sodium are collected and stored in the hopper part 34 installed under the first precipitation separation tank 30 of the after-treatment tank 29 and the hopper part ( Various precipitates are discharged to the outside along the screw feeder 35 installed through 34).

In addition, the exhaust gas generated in the pretreatment tank 3, the cyclone treatment tank 22, and the aftertreatment tank 29 passes through a purification filter 39 provided in the exhaust gas treatment unit 38 to purify harmful components. In the state is passed through the ignition coil 40 is heated to about 300 ~ 500 ℃ polychlorinated biphenyls and various harmful gas components are thermally decomposed and the exhaust gas is discharged to the atmosphere in an environmentally harmless state.

The continuous process type processing apparatus for waste insulating oil containing polychlorinated biphenyls (PCBs) according to the present invention safely and quickly treats the waste insulating oil in a continuous process while being environmentally harmless. Dechlorination of phenyl can maximize the overall treatment efficiency, so waste insulation oil generated from waste transformers, condensers, safety devices, breakers, etc. will be widely used in the field of purification.

Claims

The waste insulating oil containing polychlorinated biphenyl is introduced into and stored from the container (2), and the pre-treatment tank (3), which is heated and stored at a constant temperature, and the inner diameter of the waste waste insulating oil is gradually narrowed from both sides toward the central portion (15). While passing through the formed venturi tube 11, the central portion of the venturi tube 11 in a molten state of the metal sodium dechlorination reagent from the reagent supply device 16 connected to the central portion 15 of the venturi tube 11 ( 15) Mixed reaction apparatus 10 which is naturally introduced and mixed by the pressure difference according to the flow rate of waste insulating oil passing through the inner side, and polychlorinated biphenyl and molten sodium contained in the waste insulating oil are chemically reacted and desalted firstly. In the process of discharging waste insulating oil, which has been firstly desalted, and transported downward along the inner circumferential surface, the waste insulating oil and molten sodium are mixed to generate a vortex that rises in the inner center while the secondary desalting process results in an exhaust gas. The insulated and desalted waste insulating oil is discharged downward through the cyclone treatment tank 22, and the secondary desalted waste insulating oil is introduced into the inside and cooled through room temperature through a plurality of sediment separation tanks 30 partitioned in multiple stages. Sodium chloride and various sediments produced during continuous desalination are precipitated, and the waste insulating oil of the sedimentation separation tank 30 located at the end is sent to the treatment oil storage tank 33 and the precipitated sodium chloride and various sediments are discharged to the outside. Waste insulation oil continuous process type processing apparatus containing polychlorinated biphenyls, characterized in that the post-treatment tank 29 is processed.
The method of claim 1, wherein the pretreatment tank (3), the cyclone treatment tank (22) and the aftertreatment tank (29) collect the exhaust gas generated therein and filter it with a purifying filter (39) and harmful by the ignition coil (40). A waste gas continuous process type processing apparatus containing polychlorinated biphenyls, characterized in that the exhaust gas treatment unit (38) is further installed to discharge the purified gas by thermally decomposing the gas component.
According to claim 1, wherein the mixing reaction device 10 is connected to the mixing reaction inlet pipe 12 on one side of the venturi tube 11 is connected to the pretreatment tank outlet 7 and the piping of the pretreatment tank (3). Waste insulating oil heated by the transfer pump 13 installed on the pipe in a connected state is passed through the venturi tube 11 through the mixed reaction inlet tube 12 at a constant flow rate, and the venturi tube 11 is provided. On the other side of the mixed reaction discharge pipe 14 is connected to the cyclone treatment tank 22 is installed, the venturi tube 11 has an inner diameter gradually narrowed toward the inner central portion 15 from one side to the central portion 15 The inner diameter is the minimum value in the) and the inner diameter is gradually wider from the central portion (15) toward the other side, and the reagent supply device interposed vertically through the outer portion in the central portion (15) of the venturi tube (11) The reagent supply tube 17 of 16 communicates with the inside of the venturi tube 11. Waste insulation oil continuous process type processing apparatus containing polychlorinated biphenyls, characterized in that it is installed.
The method of claim 1, wherein the mixing reaction device 10 is characterized in that the blocking safety wall 41 is surrounded by a predetermined interval spaced around the outer periphery of the venturi tube 11 and the reagent supply device (16) Waste insulation oil continuous process equipment containing polychlorinated biphenyls.
The reagent supply apparatus 16 according to any one of claims 1, 3, and 4, wherein the reagent supply device 16 is a cylindrical casing having a pointed cone shape at the bottom thereof, and a reagent inlet 18 is provided at the upper part thereof. There is a certain amount of dechlorination reagent metal sodium or metal lithium is put into the inside and stored in the bottom portion formed in the cone shape in the reagent supply device 16, the reagent supply pipe 17 of a predetermined length is formed to protrude vertically downward and the reagent supply pipe On the outer circumferential surface of (17), a heating means (19) made of a bending heater is installed, and the reagent supply device (16) is provided with a refined oil inlet (20) formed on one side of the upper side through a refined oil inlet (20). As the purified insulating oil is introduced, the dechlorinated reagent is prevented from being contacted with moisture in the air and exploded. A nitrogen gas inlet 21 is formed on the other side of the reagent supply device 16. Part polychlorinated biphenyl waste transformer oil continuous gongjeongsik processing apparatus comprising a characterized in that the nitrogen gas is filled to block the external air inlet in the upper portion in a state in which the stored input metal Na and the refined oil.
5. The mixing reaction apparatus 10 according to any one of claims 1, 3, and 4, wherein the mixing reaction apparatus 10 includes one impeller means 42 in the mixing reaction discharge tube 14 connected to the venturi tube 11; A plurality of connection is provided, the impeller means 42 is provided with an impeller pipe 43 having the same inner diameter as the mixed reaction discharge pipe 14, the central axis of the impeller pipe 43 along the impeller pipe 43 ( 44 is provided, and a plurality of fixed blades 45a, 45b are radially attached to the front and rear ends of the central shaft 44, and an impeller body 46 is provided at the center of the central shaft 44. Is installed rotatably and a plurality of rotary blades 47 are fixedly attached to the outer circumferential surface of the impeller body 46 so that the waste insulating oil mixed with the dechlorination reagent from the mixed reaction discharge pipe 14 is impeller means 42. Characterized in that the stirring and mixing while passing through Polychlorinated biphenyl waste transformer oil continuous gongjeongsik processing apparatus contained.
The mixing reaction apparatus 10 according to any one of claims 1, 3, and 4, wherein the mixing and reinforcing means (48) is provided in the mixing reaction discharge pipe (14) connected to the venturi pipe (11). Or a plurality of connections are provided, the stirring reinforcing means 48 is provided with a stirring pipe 49 having the same inner diameter as the mixing reaction discharge pipe 14, a plurality of one side plate 50 on the inner peripheral surface of the stirring pipe 49 The other side plate 51 is fixedly installed at a predetermined interval and the other circumferential plate 51 is fixedly installed at a predetermined interval on the other side of the inner circumferential surface of the stirring pipe 49, and the other side plate 51 is positioned between the plurality of one side plate 50. The waste insulating oil mixed with the dechlorination reagent from the mixed reaction discharge pipe 14 is stir-mixed while passing zigzag between one side plate 50 and the other side plate 51 of the impeller pipe 43. Waste insulation containing polychlorinated biphenyls Gongjeongsik continuous processing apparatus.
According to claim 1, wherein the cyclone treatment tank 22 is a cylindrical casing having a pointed cone-shaped lower portion is formed in the upper side of the cyclone inlet 23 is connected to the other end of the reaction tube 14 is mixed reaction discharge pipe 14 is formed; The center tube 25 having a cyclone gas outlet 24 formed at an upper portion of the inner central portion is vertically fixed, and the center tube 25 has an upper portion protruding outward from an upper portion of the cyclone treatment tank 22, and a lower portion thereof is opened. It is spaced apart from the inner lower portion of the cyclone treatment tank 22 in the state, the lower portion of the cyclone treatment tank 22 is connected to the cyclone inlet pipe 23 of a predetermined length vertically connected and connected to the cyclone inlet 23 An induction furnace 27 is formed above the inner circumferential surface of the cyclone treatment tank 22, and the primary desalted waste insulating oil discharged to the inside of the cyclone treatment tank 22 through the mixed reaction discharge pipe 14 is an induction furnace 27. ) In the process of downwardly transporting the inner circumferential surface of the L-cyclone treatment tank 22, a vortex that rises inside the center tube 25 of the cyclone treatment tank 22 is generated, so that the exhaust gas generated during the desalting reaction along the vortex is moved upward. Waste gas for continuous process oil containing polychlorinated biphenyl, characterized in that it is sent to the exhaust gas treatment unit 38 through the cyclone gas outlet (24) of the upper portion of the pipe (25).
10. The waste containing polychlorinated biphenyl according to claim 8, wherein the cyclone discharge pipe (26) is provided with a collision preventing device (28) formed of a cone-shaped cap having a pointed lower portion at a lower end thereof. Insulating oil continuous processing system.
The cyclone treatment tank (22) according to any one of claims 1, 2 or 8, wherein one or more impeller means (42) are connected to the cyclone discharge pipe (26) installed vertically connected to the lower end thereof. Is installed, the impeller means 42 is provided with an impeller pipe 43 having the same inner diameter as the cyclone discharge pipe 26 and the central axis 44 along the impeller pipe 43 in the center of the impeller pipe 43 A plurality of fixed blades 45a, 45b are fixedly attached to the front and rear ends of the central shaft 44, and the impeller body 46 is rotatable at the central portion of the central shaft 44. A plurality of rotary blades 47 are fixedly attached to the outer circumferential surface of the impeller body 46 so that the waste insulating oil in which the dechlorination reagent from the cyclone discharge pipe 26 is mixed passes through the impeller means 42. To be able to Waste insulation oil continuous process type apparatus containing polychlorinated biphenyls.
The cyclone treatment tank (22) according to any one of claims 1, 2, or 8, wherein one or more stirring reinforcing means (48) is provided in the cyclone discharge pipe (26) installed vertically connected to the lower end thereof. Is installed and connected, the stirring reinforcing means 48 is provided with a stirring pipe 49 having the same inner diameter as the cyclone discharge pipe 26 and a plurality of one side plate 50 on one side of the inner circumferential surface of the stirring pipe 49 The other side plate 51 is fixedly installed at a predetermined interval on the other side of the inner circumferential surface of the stirring pipe 49, and the other side plate 51 is positioned between the plurality of one side plate 50 and the cyclone discharge pipe ( 26) polychlorinated biphenyl, characterized in that the waste insulating oil mixed with the dechlorination reagent is mixed with stirring while passing zigzag between the one side plate 50 and the other side plate 51 of the impeller pipe 43. This Waste process oil containing continuous process treatment device.
According to claim 1, The post-treatment tank 29 is a rectangular tubular casing long left and right, a plurality of partition walls 31 are provided on the inner bottom surface at regular intervals left and right and the upper end of the plurality of partition walls 31 The inner surface of the after-treatment tank 29 is installed to be spaced apart at regular intervals, so that the height of the partition wall 31 is sequentially lowered, so that the plurality of sedimentation separation tanks 30 divided into multiple stages in the after-treatment tank 29 are provided. ) Is installed, and the lower end of the cyclone discharge pipe 26 provided in the cyclone treatment tank 22 is installed at the inner middle height in the sedimentation separation tank 30 located at the first of the plurality of sedimentation separation tank 30. And the after-treatment tank outlet 32 is formed in the sedimentation separation tank 30 positioned at the end, and the after-treatment tank gas outlet 37 is formed on the outer side of the after-treatment tank 29. Containing oil vapor and water generated in tank 29 A waste insulating oil continuous process type processing apparatus containing polychlorinated biphenyls, characterized in that various waste gases are sent to the waste gas treating unit (38).
According to claim 1 or 12, wherein the after-treatment tank 29 has a hopper portion 34 protrudes integrally formed in the lower portion of the sedimentation separation tank 30 is located first, and the hopper portion 34 is a screw One end of the feeder 35 is installed in the state penetrated through the inside so that the sodium chloride and metal sodium and various precipitates precipitated in the sedimentation separation tank 30 located in the first place gathered and stored in the hopper portion 34 screw feeder A waste insulating oil continuous process type processing apparatus containing polychlorinated biphenyls, characterized in that it is discharged to the outside by (35).
The waste insulating oil containing polychlorinated biphenyl is extracted from the waste transformer, the condenser, the safety device, and the breaker's container (2), and stored in the pretreatment tank (3), and heated at 100 to 150 ° C. In accordance with Bernoulli's principle in the process of passing through the venturi tube 11 formed by the feed pump 13 at a constant flow rate to the mixing reaction device 10 at a constant flow rate, the inner diameter gradually narrower from both sides toward the central portion 15. Flow rate change of the waste insulating oil passing through the inside of the central portion 15 of the venturi tube 11 in a state in which the metal sodium, a dechlorination reagent, is melted from the reagent supply device 16 connected to the central portion 15 of the diaphragm tube 11. Due to the pressure difference according to the natural mixing, polychlorinated biphenyl and molten sodium contained in the waste insulating oil is first desalted by chemical reaction, and the primary desalted waste insulating oil is moved to the upper portion of the cyclone treatment tank 22. By discharging cyclone treatment tank ( In the process of spirally downwardly moving along the inner circumferential surface of 22), waste insulating oil and molten sodium are mixed and secondary desalination generates vortex that rises to the inner center, and the exhaust gas generated during desalination is upwardly discharged and desalted waste The insulating oil is discharged through the cyclone discharge pipe 26 to the first precipitation separation tank 30 of the after-treatment tank 29, and sodium chloride, metal sodium, and various precipitates precipitated by cooling at room temperature are screwed in the hopper part 34 installed at the bottom. The discharged to the outside through the Peter (35) and the waste insulating oil overflows to the sedimentation tank (30) of the next compartment, and the sediment is settled again through a plurality of sedimentation tanks (30) of the multi-stage in the manner of sedimentation and sedimentation Waste insulation oil stored in the tank (30) is sent to the processing oil storage tank 33, characterized in that the waste insulating oil continuous process treatment method containing polychlorinated biphenyl.