Separation device, carbonized composition manufacturing apparatus, and carbonized composition manufacturing system

Abstract

To separate and recover a solvent and a resin composition from a fluid containing the resin composition containing a resin and the solvent.SOLUTION: A separation device, which separates a resin composition and a solvent from a fluid containing the resin composition containing a resin and the solvent, comprises: a spray part for spraying the fluid; a supply part that supplies an inert gas, of which a temperature is controlled to a temperature for volatilizing the solvent of the fluid, in a reverse direction (crossing and facing direction) of a spray direction of the fluid so that the inert gas contacts the sprayed fluid; a recovery part which recovers the solvent volatilized from the fluid with which the inert gas has contacted by cooling; and a storage part which accommodates a resin solid composition, which has been manufactured in such a manner that the solvent is volatilized and separated from the fluid with which the inert gas has contacted, in a floating state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology of the present disclosure relates to a separation device, a carbonized composition production device, and a carbonized composition production system. [Background technology]

[0002] Rotating disk-type drying devices such as those described in Patent Documents 1 and 2 are known. A rotating disk-type drying device includes a drying device main body, a disk installed inside the drying device main body, a drive device for rotating the disk, a steam supply device for supplying steam to heat the disk, and a discharge device for discharging the material to be dried onto the disk. In rotating disk-type drying, a liquid fluid (material to be dried) containing a resin-containing resin composition and a solvent is applied onto a heated disk to remove the solvent from the liquid fluid. After the solvent is removed, the resin solid composition adhering to the disk is scraped off to recover the resin solid composition. The recovered resin solid composition is then pulverized, fired (carbonized), coarsely pulverized, and finally pulverized (microparticulated). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special table number 2004-508930 [Patent Document 2] JP 2006-220371 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in disk drying, the solvent is evaporated and not recovered, so it is not possible to separate and recover the resin solid composition and the solvent from the liquid fluid containing the resin-containing resin composition and the solvent.

[0005] Furthermore, in disk drying, the resin solid composition adhering to the disk is scraped off and collected in a storage section, and the collected resin composition fine particles are then crushed, fired, coarsely crushed, and finally crushed in the storage section, so the resin solid composition and the carbonized composition adhere to the inner wall of the storage section, resulting in poor recovery of the carbonized composition.

[0006] The technology of the present disclosure aims to provide a separation device that can separate and recover a resin composition and a solvent from a liquid fluid containing a resin-containing resin composition and a solvent.

[0007] Another object of the technology disclosed herein is to provide a carbonized composition production device and a carbonized composition production system that can improve the recovery efficiency of carbonized compositions compared to conventional techniques. [Means for solving the problem]

[0008] The separation device of the first aspect of the technology disclosed herein for achieving the above-mentioned object is a separation device that separates a resin composition and a solvent from a liquid fluid containing a resin-containing resin composition and the solvent, and is equipped with a spraying section that sprays the liquid fluid, a supply section that supplies an inert gas whose temperature is adjusted to a temperature that volatilizes the solvent in the liquid fluid in a direction opposite to (intersecting and opposing) the spraying direction of the liquid fluid so that the inert gas comes into contact with the sprayed liquid fluid, a recovery section that recovers, by cooling, the solvent that has volatilized from the liquid fluid that has come into contact with the inert gas, and a storage section that stores, in a floating state, the resin solid composition produced by the solvent being volatilized and separated from the liquid fluid that has come into contact with the inert gas.

[0009] The carbonized composition production apparatus of the second embodiment includes a heating section that heats the suspended resin solid composition to a temperature equal to or higher than the temperature at which the resin solid composition becomes a carbonized composition.

[0010] A carbonized composition production system of a third aspect is a carbonized composition production system comprising the separation device of the first aspect and the carbonized composition production apparatus of the second aspect, wherein the heating section heats a floating resin solid composition, which is a resin composition separated by evaporation of the solvent from the liquid fluid with which the inert gas has come into contact. [Effects of the Invention]

[0011] A first aspect of the technique of the present disclosure makes it possible to separate and recover a resin composition and a solvent from a liquid fluid containing a resin-containing resin composition and a solvent.

[0012] Furthermore, the second and third aspects of the technology of the present disclosure can improve the recoverability of the carbonized composition compared to conventional techniques. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic diagram of an example of a carbonized composition production system according to the first embodiment. [Figure 2] FIG. 2 is a graph showing an example of the temperature of each heater in the carbonized composition production system. [Figure 3A] FIG. 3A is a diagram showing an example of an angle between the liquid fluid and the supply direction of the inert gas. [Figure 3B] FIG. 3B is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas. [Figure 4] FIG. 4 is a graph showing an example of the flow rate of the liquid or inert gas sprayed or supplied from each nozzle of the carbonized composition production system. [Figure 5] FIG. 5 is a timing chart of the spraying of the liquid fluid and the supply of the inert gas. [Figure 6] FIG. 6 is a schematic diagram of an example of a carbonized composition production system according to the second embodiment. [Figure 7] FIG. 7 is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas in the second embodiment. [Figure 8]FIG. 8 is a schematic diagram of an example of a skew feeder that discharges the carbonized composition in the depositing section of the first modified example. [Figure 9] FIG. 9 is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas in the second modified example. [Figure 10] FIG. 10 is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas in the third modified example. [Figure 11] FIG. 11 is a diagram showing an example of eight supply ports of a supply unit that supplies an inert gas vertically upward along the inner wall of the container unit (and the second zone) of the fourth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the technology of the present disclosure will be described with reference to the drawings.

[0015] [First embodiment] (composition) 1 is a schematic diagram of an example of a carbonized composition production system 100 according to a first embodiment. The carbonized composition production system 100 includes a separation device 120 that separates a resin composition and a solvent from a liquid fluid containing the resin-containing resin composition and the solvent, and a carbonized composition production device 140 that produces a carbonized composition from a resin solid composition.

[0016] The separation device 120 includes a spraying section 102 that sprays a liquid fluid, and a supplying section 104 that supplies an inert gas, the temperature of which is adjusted to a temperature that volatilizes the solvent of the liquid fluid, in a direction opposite to the spraying direction of the liquid fluid so as to come into contact with the sprayed liquid fluid.

[0017] The separation device 120 includes a recovery section 106 that recovers, by cooling, the solvent that has evaporated from the liquid fluid that has come into contact with the inert gas, and a storage section 108 that stores, in a floating state, the resin solid composition produced by the solvent being evaporated and separated from the liquid fluid that has come into contact with the inert gas.

[0018] The separation device 120 includes a heating section 110 that heats the floating resin solid composition to a temperature above which it becomes a carbonized composition, and a deposition section 112 that deposits the carbonized composition produced by heating the resin solid composition so that it can be discharged from the bottom.

[0019] The spraying unit 102 includes a liquid supply tank 5 that stores a liquid fluid containing a resin composition and a solvent, a liquid feed pump 6 that feeds the liquid fluid stored in the liquid supply tank 5, and a liquid temperature regulator 7 that adjusts the temperature of the liquid fluid fed by the liquid feed pump 6. The spraying unit 102 includes a gas supply device 8 that supplies gas, a valve 9 that adjusts the flow rate of the gas supplied by the gas supply device 8, and a gas temperature regulator 10 that adjusts the temperature of the gas whose flow rate has been adjusted. The spraying unit 102 includes a liquid sprayer 2 that sprays the temperature-adjusted liquid fluid into the spray-drying tank 1 using temperature-adjusted gas.

[0020] The spray-drying tank 1 has an upper portion provided with openings for piping the liquid fluid and gas from the spraying section 102 .

[0021] Examples of resins include polyolefins such as polyethylene, polypropylene, polybutene, poly(4-methylpentene), and polyhexene; polystyrene; polystyrene derivatives having a substituent such as an alkyl group having 1 to 4 carbon atoms or a halogen atom on the benzene ring; polydienes such as polybutadiene, polyisoprene, and ethylene-propylene-diene copolymers; halogenated polyolefins such as polyfluoroethylene, polytetrafluoroethylene, polyvinyl chloride, and polyvinylidene chloride; polyvinyl esters such as polyvinyl acetate and polyvinyl alcohol or saponified products thereof; polyesters, polyamides, polyimides, polyamideimides, polysilicon resins, and polysiloxanes. Copolymers of the monomers that make up these resins are also possible. The resin may be a single type or a mixture of two or more types. The resin composition may also consist solely of resin.

[0022] The resin composition containing the resin may contain an inorganic substance. Examples of the inorganic substance include zero-valent metals, metal oxides, metal salts, carbon, and silicon. These inorganic substances are appropriately selected depending on the application of the resulting resin composition microparticles, and the inorganic substance may be one type or a mixture of two or more types.

[0023] A liquid fluid containing the resin composition and the solvent is obtained by mixing the resin composition with the solvent. The liquid fluid may be a solution in which the resin composition is uniformly dissolved in the solvent, or a dispersion in which the resin composition is dispersed in the solvent.

[0024] The liquid sprayer 2 includes at least one nozzle for spraying the liquid fluid. In this embodiment, the liquid sprayer 2 includes one nozzle.

[0025] The liquid sprayer 2 uses ultrasonic waves to spray the liquid fluid. Specifically, for example, ultrasonic waves generated by the vibration of a piezo ceramic (not shown) are transmitted to the nozzle of the liquid sprayer 2, vibrating a liquid film within the nozzle, forming fine particles from the liquid fluid and spraying them in a mist.

[0026] The gas supplied by the gas supply device 8 is, for example, air. Note that the gas may be an inert gas, which will be described later.

[0027] The supply unit 104 includes a gas supply device 11 that supplies an inert gas, a valve 12 that adjusts the flow rate of the inert gas supplied by the gas supply device 11, and a gas temperature regulator 13 that adjusts the flow rate of the inert gas to a temperature (i.e., a first temperature) that volatilizes the solvent in the liquid fluid. The supply unit 104 includes at least one, for example, a pair of gas supply devices 3L and 3R that supply the temperature-adjusted inert gas in a direction opposite to the spray direction of the liquid fluid, specifically in a direction that intersects and faces the sprayed liquid fluid, so as to contact the sprayed liquid fluid. The pair of gas supply devices 3L and 3R are arranged in a straight line.

[0028] The inert gas is, for example, nitrogen, helium, argon, or the like.

[0029] Recovery section 106 includes a collector 14 that collects the solvent vaporized from the liquid fluid that has come into contact with the inert gas through opening 106K at the top of spray-drying tank 1, a gas cooler 15 that cools the temperature of the collected solvent so that the solvent becomes liquid, and a recovery tank 16 that collects the cooled solvent in a liquid state. The top of spray-drying tank 1 may be curved upward, and opening 106K may be provided at the highest position of the top of spray-drying tank 1.

[0030] The storage section 108 is the lower area inside the spray-drying tank 1 .

[0031] The separation device 120 includes a heating section 109 provided on the upper peripheral surface of the spray-drying tank 1 that heats the liquid fluid sprayed by the liquid sprayer 2 to a first temperature, and a heating section 110 provided on the lower peripheral surface of the spray-drying tank 1 that heats the suspended resin solid composition to a second temperature or higher at which it becomes a carbonized composition.

[0032] The spray drying tank 1 is configured in a cylindrical shape.

[0033] The heating section 109 includes heaters 4A1 and 4A2 provided in an annular shape on the upper peripheral surface of the spray-drying tank 1.

[0034] The heating section 110 includes heaters 4B1, 4B2, and 4B3 provided in an annular shape on the lower peripheral surface of the spray-drying tank 1.

[0035] The heaters 4A1, 4A2, 4B1, 4B2, and 4B3 may be, for example, microwave sources. The microwave sources radiate electromagnetic waves to provide accurate and effective heating. Alternatively, the heaters 4A1, 4A2, 4B1, 4B2, and 4B3 may be configured as high-frequency induction heating sources having an induction coil and a high-frequency application unit that applies high-frequency current to the induction coil. When high-frequency current is applied to the induction coil, the induction coil generates an induction magnetic field for heating.

[0036] The lower side of the spray-drying tank 1 has a tapered shape. A deposition section 112 is provided on the lower side of the spray-drying tank 1.

[0037] An opening is formed on the lower side of the spray-drying tank 1. The deposition section 112 has a hollow cylindrical shape. The size of the lower opening of the spray-drying tank 1 is the same as the size of the upper opening of the deposition section 112. The lower opening of the spray-drying tank 1 and the upper opening of the deposition section 112 are connected.

[0038] The size of the lower opening of deposition section 112 is smaller than the size of the upper opening of deposition section 112. The lower opening of deposition section 112 is connected to a flow path 113 for discharging the carbonized composition.

[0039] FIG. 2 is a graph showing an example of the temperature of each heater in the carbonized composition production system 100.

[0040] The heaters 4A1 and 4A2 of the heating unit 109 heat the liquid fluid sprayed from the liquid sprayer 2 and the inert gas supplied from the gas suppliers 3L and 3R to a first temperature. As described above, the first temperature is the temperature of the inert gas adjusted by the gas temperature regulator 13 of the supply unit 104, i.e., the temperature at which the solvent of the liquid fluid volatilizes, and is, for example, 100°C.

[0041] Heaters 4B1, 4B2, and 4B3 of heating section 110 heat the resin solid composition, which is produced by the solvent volatilizing and separating from a liquid fluid that has come into contact with an inert gas and is stored in a floating state in storage section 108, to a second temperature at which it becomes a carbonized composition, specifically a temperature of 200°C or higher and 1500°C or lower, for example, 1000°C.

[0042] FIG. 3A is a diagram showing an example of the angle between the spray direction of the liquid fluid and the supply direction of the inert gas.

[0043] The angle between the spray direction of the liquid fluid sprayed by the liquid sprayer 2 and the supply direction of the inert gas supplied by the pair of gas suppliers 3L and 3R is 90 to 180 degrees.

[0044] Specifically, the liquid sprayer 2 sprays the liquid fluid vertically downward at an angle θ2 in a cross section passing through the vertical axis in Fig. 3A. The pair of gas suppliers 3L and 3R supply the inert gas vertically upward at angles θ3L and θ3R in a cross section passing through the vertical axis in Fig. 3A.

[0045] The liquid fluid from the nozzle outlet 2i of the liquid sprayer 2 and the inert gas from each of the supply port 3Ri of the nozzle of the gas supplier 3R and the supply port 3Li of the nozzle of the gas supplier 3L first come into contact with each other in the contact area S.

[0046] The liquid sprayer 2 sprays the liquid fluid and the gas supplier 3R supplies the inert gas along lines GC and FL connecting the nozzle outlet 2i of the liquid sprayer 2 and the nozzle supply outlet 3Ri of the gas supplier 3R. In this case, the angle between the spray direction of the liquid fluid sprayed by the liquid sprayer 2 and the supply direction of the inert gas supplied by the pair of gas suppliers 3L and 3R is 180 degrees.

[0047] The angle between the rightmost line GR of the liquid fluid injection area injected by the liquid sprayer 2 at an angle θ2 in the above cross section and the rightmost line FR of the inert gas supply area supplied by the gas supplier 3R at an angle θ3R in the above cross section is 90°.

[0048] In addition, the relationship between the supply direction of the inert gas from the gas supplier 3L and the spray direction of the liquid fluid injected by the liquid sprayer 2 is similar to the relationship between the supply direction of the inert gas from the gas supplier 3R and the spray direction of the liquid fluid injected by the liquid sprayer 2, so the explanation will be omitted.

[0049] 3B is a diagram showing an example of the spray direction of the liquid fluid and the size of contact with the inert gas. In the contact area S (see FIG. 3A), areas R3L and R3R of the inert gas from the supply port 3Li and the supply port 3Ri, respectively, are located inside area R2 of the liquid fluid from the injection port 2i.

[0050] FIG. 4 is a graph showing an example of the air volume of the liquid or inert gas sprayed or supplied from each nozzle of the carbonized composition production system. The air volume of the liquid fluid sprayed by the liquid sprayer 2 is K2 (m3 / s). The air volume of the inert gas supplied by the gas supplyers 3L and 3R is K2 (m3 / s) or more, specifically, K3 (m3 / s). In other words, K3 > K2. Note that the air volume of the inert gas supplied by the gas supplyers 3L and 3R is not limited to K3 (m3 / s) and may be, for example, K2 (m3 / s). As described above, the resin solid composition produced by the solvent volatilizing and separating from the liquid fluid in contact with the inert gas floats.

[0051] 5 is a timing chart of the spraying of the liquid fluid and the supply of the inert gas. As shown in FIG. 5, the start of the spraying of the liquid fluid and the start of the supply of the inert gas are the same. However, the supply time S of the inert gas is longer than the spraying time T of the liquid fluid. This is to allow more of the solvent volatilized from the liquid fluid that comes into contact with the inert gas to be collected by the collector 14 through the opening 106K.

[0052] (action) The spray unit 102 sprays the liquid fluid. Specifically, first, the liquid feed pump 6 feeds the liquid fluid contained in the liquid supply tank 5. The liquid temperature regulator 7 adjusts the temperature of the liquid fluid fed by the liquid feed pump 6. The gas supply device 8 supplies gas. The valve 9 adjusts the flow rate of the inert gas supplied by the gas supply device 8. The gas temperature regulator 10 adjusts the temperature of the inert gas whose flow rate has been adjusted. The liquid sprayer 2 and the spray unit 102 each spray the liquid fluid, the temperature of which has been adjusted, into the spray-drying tank 1.

[0053] The supply unit 104 supplies inert gas, the temperature of which has been adjusted to a temperature that volatilizes the solvent of the liquid fluid, in the direction opposite to the spraying direction of the liquid fluid so as to come into contact with the sprayed liquid fluid. Specifically, first, the gas supply device 11 supplies the inert gas. The valve 12 adjusts the flow rate of the inert gas supplied by the gas supply device 11. The gas temperature regulator 13 adjusts the temperature of the inert gas, the flow rate of which has been adjusted, to a temperature that volatilizes the solvent of the liquid fluid. The pair of gas supply devices 3L and 3R supply the temperature-adjusted inert gas in the direction opposite to the spraying direction of the liquid fluid, specifically in directions that intersect and face each other, so as to come into contact with the sprayed liquid fluid.

[0054] As shown in Fig. 3A, the angle between the spray direction of the liquid fluid sprayed by the liquid sprayer 2 and the supply direction of the inert gas supplied by the pair of gas suppliers 3L and 3R is 90 to 180 degrees. As shown in Fig. 3B, in the contact region S (see Fig. 3A), regions R3L and R3R of the inert gas from each of the supply ports 3Ri and 3Ri are located inside the region R2 of the liquid fluid from the injection port 2i.

[0055] As shown in Figure 4, the air volume of the liquid fluid sprayed by the liquid sprayer 2 is K2 (m3 / s). The air volume of the inert gas supplied by the gas suppliers 3L and 3R is equal to or greater than K2 (m3 / s), specifically, K3 (m3 / s). The air volume K3 of the inert gas supplied by the gas suppliers 3L and 3R is greater than the air volume K2 of the liquid fluid sprayed by the liquid sprayer 2. This allows the resin solid composition produced by the solvent volatilizing and separating from the liquid fluid that has come into contact with the inert gas to be suspended.

[0056] The heaters 4A1 and 4A2 of the heating unit 109 heat the liquid fluid sprayed from the liquid sprayer 2 and the inert gas supplied from the gas suppliers 3L and 3R to a first temperature (see FIG. 2).

[0057] The solvent volatilizes from the liquid fluid that has come into contact with the inert gas. A collector 14 collects the solvent volatilized from the liquid fluid that has come into contact with the inert gas through an opening 106K at the top of the spray-drying tank 1, and a gas cooler 15 cools the collected solvent so that it becomes liquid. A recovery tank 16 recovers the cooled solvent in a liquid state. The concentration of the recovered solvent is 0 to 90 vol%.

[0058] 5, the start of spraying the liquid fluid and the start of supplying the inert gas are the same. However, the supply time S of the inert gas is longer than the spray time T of the liquid fluid. This allows a larger amount of the solvent volatilized from the liquid fluid that comes into contact with the inert gas to be collected by the collector 14 through the opening 106K.

[0059] The solvent is volatilized and separated from the liquid fluid that comes into contact with the inert gas, producing a resin solid composition that is stored in a floating state in the storage section 108. The resin solid composition falls naturally through the storage section 108 and accumulates (retains) in the accumulation section 112.

[0060] The resin solid composition is stored in a floating state in the storage section 108 and is deposited in the deposition section 112, and is heated to a second temperature or higher by the heaters 4B1, 4B2, and 4B3 of the heating section 110 to produce a carbonized composition.

[0061] The carbonized composition is naturally discharged from the deposition portion 112 through the flow path 113 .

[0062] When a negative electrode active material is produced using the carbonized composition production apparatus of this embodiment, the carbonized composition is subjected to a CVD (C-coat) treatment, a crushing treatment, a classification treatment, and a magnetic separation treatment in this order. Note that these treatments are the same as those conventionally performed, and therefore, their explanations are omitted.

[0063] (effect) As described above, in the first embodiment, an inert gas whose temperature is adjusted to a temperature at which the solvent in the liquid fluid volatilizes is supplied in the direction opposite to the spraying direction of the liquid fluid so as to come into contact with the sprayed liquid fluid. Thus, in this embodiment, the resin composition and the solvent can be separated and recovered from the liquid fluid containing the resin-containing resin composition and the solvent.

[0064] In this embodiment, the inert gas supplied in the direction opposite to the spray direction of the liquid fluid can prevent the resin solid composition from fusing together.

[0065] In this embodiment, the suspended resin solid composition is heated to a temperature equal to or higher than the temperature at which it becomes a carbonized composition, which prevents the resin solid composition and the carbonized composition from adhering to the inner wall of the spray-drying tank, thereby improving the recoverability of the carbonized composition compared to conventional techniques.

[0066] In this embodiment, the resin solid composition is heated in a state in which fusion between the resin solid composition particles is suppressed, so that fusion between the carbonized composition particles can be suppressed, thereby preventing the carbonized composition from agglomerating.

[0067] In this embodiment, a carbonized composition with little contamination, that is, a carbonized composition with few impurities, can be obtained.

[0068] In this embodiment, a separation device that separates a resin composition and a solvent from a liquid fluid and a carbonized composition production apparatus that produces a carbonized composition are integrated, and the resin solid composition obtained by volatilizing and separating the solvent from the liquid fluid that has come into contact with an inert gas is stored in a floating state in a storage section, and the stored resin solid composition is heated to produce the carbonized composition. Therefore, in this embodiment, the storage section is shared between the separation device and the carbonized composition production apparatus, which reduces the manufacturing costs of the apparatus.

[0069] As described above, conventional rotating disk drying requires the steps of applying a liquid fluid to a heated disk, removing the solvent from the liquid fluid, scraping off the resin solid composition (resin solid composition) adhering to the disk, pulverizing the resin solid composition, baking (carbonizing), coarsely pulverizing, and final pulverization (microparticulation). In contrast, in the present embodiment, the inert gas is supplied to the sprayed liquid fluid, the solvent volatilized from the liquid fluid is recovered, and the resin solid composition produced by the solvent volatilizing and separating from the liquid fluid is contained and heated to a temperature above the temperature at which the resin solid composition becomes a carbonized composition. Therefore, the present embodiment can reduce the number of steps required to produce a carbonized composition compared to conventional techniques. Furthermore, in this embodiment, the pulverization, firing (carbonization), coarse pulverization, and final pulverization (microparticulation) of the resin solid composition, which are performed in conventional rotary disk-type drying, are omitted, thereby preventing the generation of fine powder due to pulverization and making it possible to produce a carbonized composition with little fine powder.

[0070] [Second embodiment] (composition) The configuration of the second embodiment is substantially the same as that of the first embodiment, so the same parts are given the same reference numerals and their explanation is omitted, and only the different parts will be explained.

[0071] 6 is a schematic diagram of an example of a carbonized composition production system 200 according to the second embodiment. The carbonized composition production system 200 includes a separation device 220 that separates a resin composition and a solvent from a liquid fluid containing the resin-containing resin composition and the solvent, and a carbonized composition production device 240 that produces a carbonized composition from the resin solid composition.

[0072] In the first embodiment, the supply unit 104 includes a pair of gas suppliers 3L and 3R. In contrast, in the second embodiment, the supply unit 104 includes more than two, for example, three gas suppliers 3L, 3C, and 3R. The three gas suppliers 3L, 3C, and 3R are arranged in a straight line.

[0073] The relationship between the supply direction of the inert gas from the gas supplier 3 and the spray direction of the liquid fluid sprayed by the liquid sprayer 2 in the second embodiment is the same as in the second embodiment. In addition, the air volume of the liquid or inert gas sprayed or supplied from each nozzle in the second embodiment is the same as the air volume of the liquid or inert gas sprayed or supplied from each nozzle in the first embodiment. Furthermore, the timing and time of spraying the liquid fluid and supplying the inert gas are the same as the timing and time of spraying the liquid fluid and supplying the inert gas in the first embodiment.

[0074] In the first embodiment, the storage section 108 is shared by the separation device 120 and the carbonized composition production apparatus 140. In contrast, in the second embodiment, the separation device 220 is provided with a first zone 108Z1, and the carbonized composition production apparatus 240 is provided with a second zone 108Z2.

[0075] In the first zone 108Z1, the heater 4A heats the liquid fluid sprayed from the liquid sprayer 2 and the inert gas supplied from the gas suppliers 3L, 3C, and 3R to a first temperature. In the second zone 108Z2, the heater 4B heats the resin solid composition to a second temperature higher than the first temperature to produce a carbonized composition.

[0076] In FIG. 6, the first zone 108Z1 and the second zone 108Z2 have different shapes, but they may be the same.

[0077] Between the first zone 108Z1 and the second zone 108Z2, a flow path 114 is provided through which the resin solid composition passes.

[0078] The carbonized composition production apparatus 240 further includes an inert gas supply unit 116 that supplies an inert gas to the second zone 108Z2. The inert gas supply unit 116 includes a gas supply device 6K that supplies the inert gas, a valve 7K that adjusts the flow rate of the inert gas supplied by the gas supply device 6K, a gas temperature regulator 8K that adjusts the temperature of the inert gas whose flow rate has been adjusted, and a gas supply device 3K that supplies the temperature-adjusted inert gas to the second zone 108Z2.

[0079] 7 is a diagram showing an example of the spray direction of the liquid fluid and the size of contact with the inert gas in the second embodiment. In the region where the liquid fluid from the nozzle 2i of the nozzle of the liquid sprayer 2 first comes into contact with the inert gas from the supply port 3Ri of the nozzle of the gas supplier 3R, the supply port 3Ci of the nozzle of the gas supplier 3C, and the supply port 3Li of the nozzle of the gas supplier 3L, regions R3R, R3C, and R3L of the inert gas from the supply ports 3Ri, 3Ci, and 3Li are located inside the region R2 of the liquid fluid from the nozzle 2i.

[0080] (action) The operation of the second embodiment is almost the same as that of the first embodiment. The resin solid composition produced by volatilizing and separating the solvent from the liquid fluid that has come into contact with the inert gas in the first zone 108Z1 flows into the second zone 108Z2 via the flow path 114.

[0081] An inert gas is supplied to the second zone 108Z2 by an inert gas supply unit 116.

[0082] In the second zone 108Z2, the heater 4B heats the resin solid composition to a second temperature higher than the first temperature to produce a carbonized composition.

[0083] (effect) As described above, the second embodiment, like the first embodiment, can separate and recover a resin composition and a solvent from a liquid fluid containing a resin-containing resin composition and a solvent.

[0084] In this embodiment, as in the first embodiment, it is possible to suppress fusion between resin solid compositions.

[0085] Like the first embodiment, this embodiment can prevent the resin solid composition and the carbonized composition from adhering to the inner walls of the spray-drying tank, thereby improving the recovery of the carbonized composition compared to conventional techniques.

[0086] In this embodiment, as in the first embodiment, it is possible to suppress fusion of carbonized compositions together.

[0087] In this embodiment, similarly to the first embodiment, a carbonized composition with little contamination, that is, a carbonized composition with few impurities, can be obtained.

[0088] In this embodiment, similar to the first embodiment, the number of steps for producing the carbonized composition can be reduced compared to the prior art.

[0089] [Variations] (First Modification) FIG. 8 is a schematic diagram of an example of a skew feeder 112S that discharges the carbonized composition in the depositing section 112 of the first modified example.

[0090] In the first and second embodiments, the carbonized composition is naturally discharged from the hole provided in the lower part of the deposition section 112. In contrast, in this modification, the skew feeder 112S forcibly discharges the carbonized composition in the deposition section 112.

[0091] (Second Modification) 9 is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas in the second modified example. The second modified example is a modified example of the first embodiment.

[0092] In the region where the liquid fluid from the nozzle orifice 2i of the liquid sprayer 2 first comes into contact with the inert gas from each of the supply ports 3Ri of the nozzle of the gas supplier 3R and the supply port 3Li of the nozzle of the gas supplier 3L, the region R2 of the liquid fluid from the nozzle orifice 2i and the region R3L, R3R of the inert gas from each of the supply ports 3Li and 3Ri are approximately the same size. A portion of each of the regions R3L, R3R is located inside the region R2. A portion of each of the regions R3L, R3R located inside the region R2 overlaps. The nozzle orifice 2i is located vertically above the overlapping portion. The remaining portions of each of the regions R3L, R3R are located outside the region R2.

[0093] (Third Modification) 10 is a diagram showing an example of the spray direction of the liquid fluid and the size of the liquid fluid when it comes into contact with the inert gas in a third modified example. The third modified example is a modification of the second embodiment. The supply ports 3Li, 3Ci, and 3Ri of the nozzle of the gas supply unit 3R are not arranged on a straight line but are located at the vertices of an equilateral triangle.

[0094] In the area where the liquid fluid from the nozzle outlet 2i of the liquid sprayer 2 and the inert gas from each of the supply ports 3Li, 3Ci, and 3Ri of the nozzle of the gas supplier 3R first come into contact, the area R2 of the liquid fluid from the nozzle outlet 2i and the areas R3L, R3C, and R3R of the inert gas from each of the supply ports 3Li, 3Ci, and 3Ri are approximately the same size. A portion of each of the areas R3L, R3C, and R3R is located inside the area R2. Areas R3L and R3C located inside the area R2 partially overlap. Areas R3C and R3R located inside the area R2 partially overlap. Areas R3R and R3L located inside the area R2 partially overlap. The nozzle 2i is located vertically above the center of gravity of the supply ports 3Ri, 3Ci, and 3Ri.

[0095] (Fourth Modification) FIG. 11 is a diagram showing an example of a supply section having multiple, for example, eight supply ports 3Si1, 3Si2, ... 3Si8 that supply inert gas vertically upward along the inner wall of the storage section 108 (and the second zone 108Z2) of the fourth modified example.

[0096] 11 , in the fourth modification, a supply unit that supplies an inert gas vertically upward along the inner wall of each of the storage unit 108 of the first embodiment and the second zone 108Z2 of the second embodiment is provided below the storage unit 108 and the second zone 108Z2. The supply unit may be the supply unit 104. Specifically, the supply unit 104 supplies the inert gas, the temperature of which is adjusted by the gas temperature regulator 13, to the gas supply devices 3L and 3R and eight supply ports 3Si1, 3Si2, ..., 3Si8.

[0097] The fourth modification can further prevent the carbonized composition from adhering to the inner walls of the storage section 108 and the second zone 108Z2.

[0098] As described above, the present invention discloses the following aspects. <1> A separation device that separates a resin composition and a solvent from a liquid fluid containing the resin composition and the solvent, a spray unit that sprays the liquid fluid; a supply unit that supplies an inert gas, the temperature of which is adjusted to a temperature at which the solvent of the liquid fluid is volatilized, in a direction opposite to (a direction intersecting and facing) a spray direction of the liquid fluid so as to come into contact with the sprayed liquid fluid; a recovery unit that recovers the solvent volatilized from the liquid fluid that has come into contact with the inert gas by cooling; a storage section for storing, in a floating state, a resin solid composition produced by volatilizing and separating the solvent from the liquid fluid that has come into contact with the inert gas; A separation device comprising:

[0099] <2> The spray unit sprays the liquid fluid from at least one nozzle. <1> The separation device according to claim 1.

[0100] <3> The spray unit sprays the liquid fluid using ultrasonic waves. <1> or <2> The separation device according to claim 1.

[0101] <4> The angle between the spray direction of the liquid fluid and the supply direction of the inert gas is 90 to 180 degrees. <1> ~ <3> 10. A separation device according to any one of the preceding claims.

[0102] <5> The amount of the inert gas supplied per unit time is equal to or greater than the amount of the liquid fluid sprayed per unit time. <1> ~ <4> 10. A separation device according to any one of the preceding claims.

[0103] <6> The concentration of the recovered solvent is 0 to 90 vol%. <1> ~ <5> 10. A separation device according to any one of the preceding claims.

[0104] <7> The apparatus further includes a heating unit that heats the floating resin solid composition to a temperature equal to or higher than the temperature at which the resin solid composition becomes a carbonized composition. <1> ~ <6> 10. A separation device according to any one of the preceding claims.

[0105] <8> The carbonized composition produced by heating the resin solid composition may be discharged from a lower portion of the carbonized composition depositing section. <7> The separation device according to claim 1.

[0106] <9> A carbonized composition manufacturing apparatus comprising a heating section for heating a suspended resin solid composition to a temperature above which the resin solid composition becomes a carbonized composition.

[0107] <10> The heating section heats the resin solid composition in a second zone different from a first zone in which the resin solid composition is produced from a liquid fluid containing a resin composition and a solvent, at a temperature higher than that in the first zone. <9> The carbonized composition manufacturing apparatus according to claim 1.

[0108] <11> The first zone and the second zone are the same or different shapes. <10> The carbonized composition manufacturing apparatus according to claim 1.

[0109] <12> A flow path through which the resin solid composition passes is provided between the first zone and the second zone. <10> or <11> The carbonized composition manufacturing apparatus according to claim 1.

[0110] <13> Further provided is an inert gas supply unit that supplies an inert gas to the second zone. <10> ~ <12> The carbonized composition manufacturing apparatus according to any one of the above.

[0111] <14> The carbonized composition produced by heating the resin solid composition may be discharged from a lower portion of the carbonized composition depositing section. <10> ~ <13> The carbonized composition manufacturing apparatus according to any one of the above.

[0112] <15> <1> ~ <8> a separation device according to any one of the above items; <9> ~ <14> a carbonized composition production apparatus according to any one of the above items; A carbonized composition manufacturing system comprising: The heating unit heats a floating resin solid composition that is a resin composition that has been separated from the liquid fluid with which the inert gas has come into contact by volatilization of the solvent. Carbonized composition manufacturing system.

[0113] All publications, patent applications, and technical standards mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent application, or technical standard was specifically and individually indicated to be incorporated by reference. [Explanation of symbols]

[0114] 100 Carbonized composition manufacturing system 120 Separation equipment 140 Carbonized composition manufacturing equipment 102 Spray section 104 Supply section 106 Collection Department 108 Storage Unit 110 Heating section 112 Deposition part

Claims

1. A separation device that separates a resin composition and a solvent from a liquid fluid containing the resin composition and the solvent, a spray unit that sprays the liquid fluid; a supply unit that supplies an inert gas, the temperature of which is adjusted to a temperature at which the solvent of the liquid fluid is volatilized, in a direction opposite to (a direction intersecting and facing) a spray direction of the liquid fluid so as to come into contact with the sprayed liquid fluid; a recovery unit that recovers the solvent volatilized from the liquid fluid that has come into contact with the inert gas by cooling; a storage section for storing, in a floating state, a resin solid composition produced by volatilizing and separating the solvent from the liquid fluid that has come into contact with the inert gas; A separation device comprising:

2. The separation device according to claim 1 , wherein the spraying unit sprays the liquid fluid from at least one nozzle.

3. The separating device according to claim 1 or 2, wherein the spraying unit sprays the liquid fluid using ultrasonic waves.

4. 3. The separation apparatus according to claim 1, wherein an angle between a spray direction of the liquid fluid and a supply direction of the inert gas is 90 to 180 degrees.

5. 3. The separation apparatus according to claim 1, wherein the amount of the inert gas supplied per unit time is equal to or greater than the amount of the liquid fluid sprayed per unit time.

6. 3. The separation apparatus according to claim 1, wherein the concentration of the recovered solvent is 0 to 90 vol %.

7. The separation device according to claim 1 or 2, further comprising a heating section that heats the floating resin solid composition to a temperature equal to or higher than a temperature at which the resin solid composition becomes a carbonized composition.

8. The separation device according to claim 7 , further comprising a depositing section that deposits the carbonized composition produced by heating the resin solid composition so that the carbonized composition can be discharged from a lower portion thereof.

9. A carbonized composition manufacturing apparatus comprising a heating section for heating a suspended resin solid composition to a temperature above which the resin solid composition becomes a carbonized composition.

10. The carbonized composition manufacturing apparatus according to claim 9, wherein the heating section heats the resin solid composition in a second zone different from a first zone in which the resin solid composition is produced from a liquid fluid containing a resin composition and a solvent, at a temperature higher than the temperature in the first zone.

11. The carbonized composition manufacturing apparatus according to claim 10 , wherein the first zone and the second zone have the same or different shapes.

12. The carbonized composition manufacturing apparatus according to claim 10 or 11, wherein a flow path through which the resin solid composition passes is provided between the first zone and the second zone.

13. The carbonized composition production apparatus according to claim 10 or 11, further comprising an inert gas supply unit that supplies an inert gas to the second zone.

14. The carbonized composition manufacturing apparatus according to claim 9 or claim 10, further comprising a depositing section that deposits the carbonized composition produced by heating the resin solid composition so that the carbonized composition can be discharged from a lower portion.

15. A separation device according to claim 1; The carbonized composition production apparatus according to claim 9; A carbonized composition manufacturing system comprising: The heating unit heats a floating resin solid composition that is a resin composition that has been separated from the liquid fluid with which the inert gas has come into contact by volatilization of the solvent. Carbonized composition manufacturing system.

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