JP2013188748A - Separator body and separation method for solid mixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separator body and a separation method for a solid mixture that can efficiently separate the solid mixture by the difference of fluidity.SOLUTION: A mixture of a plurality of solids different in fluidity is supplied into a separation chamber 11, and the low fluidity solid is separated to one end side of the separation chamber 11, while the high fluidity solid is separated to the other end side. At this time, the solid mixture in the separation chamber 11 is raked up and stirred to convey the low fluidity solid to the one end side by a conveying part 14 at the bottom of the separation chamber 11, while an air current is formed in a space above the conveying part 14 in the separation chamber 11 in a direction opposite to the conveying direction of the conveying part 14 by an air current forming part 15, and the high fluidity solid lifted into the space is moved to the other end side by the air current.

Description

  The present invention relates to a separation apparatus main body and a separation method for separating a mixture of a plurality of solids having different fluidities into a high fluidity solid and a low fluidity solid using an air stream.

  In recent years, a technique for producing ethanol, lactic acid and the like from sugar contained in sap by using sap contained in a trunk of a tree such as oil palm has been developed. For example, Patent Documents 1 and 2 below describe methods for producing ethanol and lactic acid from compositions other than oil palm-derived bark.

  In these Patent Documents 1 and 2, the trunk of the oil palm from which the bark has been removed by cutting is finely pulverized using a pulverizer, or finely cut using a shredder, Ethanol and lactic acid are produced by collecting sap by squeezing the shredded pieces and fermenting the obtained juice.

JP 2008-178355 A WO2011 / 045997

  However, these techniques exclusively use the sap obtained from the trunk, but it has been found that the residue generated after squeezing can be used for various purposes.

  The residue obtained after squeezing the oil palm trunk is a solid mixture in which vascular bundles and soft tissue are mixed. Since soft tissue often exists in a state of adhering to the vascular bundle, it is desired to separate the vascular bundle and the soft tissue having such different properties in order to use the residue.

  Solid mixtures in which separable solids such as vascular bundles and soft tissues are mixed or adhered, and there are various solid mixtures having the same or similar properties as vascular bundles and soft tissues. An apparatus for efficient separation is desired in various fields.

  Then, an object of this invention is to provide the isolation | separation apparatus main body and separation method of a solid mixture which can isolate | separate a solid mixture efficiently.

  As a result of intensive studies, the present inventors have found that there is a difference in fluidity between the vascular bundle and the soft tissue, and reached the present invention.

  That is, the solid mixture separation device main body of the present invention that achieves the above object is to introduce a mixture of a plurality of solids having different fluidity into the separation chamber, to transfer the low fluidity solid to one end side of the separation chamber, and to achieve high fluidity. A separation device main body for separating the solid to the other end side, provided at the bottom of the separation chamber, and transporting the low-flowing solid to the one end side while stirring and stirring the solid mixture in the separation chamber; An airflow forming unit that forms an airflow in a direction opposite to the transporting direction of the transporting unit in the space in the separation chamber above the transporting unit, and moves the high-fluid solid floating in the space to the other end side by the airflow; It has.

  The solid mixture separation device main body may be provided with a gas injection unit that injects pressurized gas into the separation chamber to lift the highly fluid solid.

  In the method for separating a solid mixture of the present invention that achieves the above object, a mixture of a plurality of solids having different fluidity is introduced into a separation chamber, a low-flowing solid is fed to one end side of the separation chamber, and a high-fluidized solid is mixed with another. A method for separating a solid mixture separated to an end side, wherein a low flow solid is conveyed to one end side while stirring and stirring the solid mixture in the separation chamber by a conveyance unit provided at the bottom of the separation chamber. In this method, an air flow is formed in the space in the separation chamber above the transfer unit in the direction opposite to the transfer direction of the transfer unit, and the high-fluidity solid is lifted in the space and moved to the other end side by the air flow.

  In this solid mixture separation method, pressurized gas may be injected into the separation chamber to float the highly fluid solid in a space above the transport unit.

  According to the solid mixture separation device main body and the separation method of the present invention, since the solid mixture is stirred by the transport unit, the solid mixture can be dispersed in the space in the separation chamber. Even when the solids constituting the solid mixture are adhered to each other or agglomerated, they can be separated from each other by applying a shearing force or an impact force between the solids. As a result, the solid mixture can be easily separated due to the difference in properties of the solids.

  In a state where the solid mixture is easily separated by stirring, the low-flowing solid is transported to one end while stirring and stirring the solid mixture in the transport section at the bottom of the separation chamber, and gas is formed in the space above the transport section. An air flow is formed by the part to move the highly fluid solid to the other end side. Therefore, it is possible to move the low-flowing solid and the high-flowing solid in opposite directions while reducing the mutual influence. At this time, the function of facilitating separation of the solid mixture and the function of moving the low-flowing solid can be realized simultaneously by the transport unit, so that the apparatus configuration can be simplified.

  Since the high-fluidity solid is moved by the airflow in the direction opposite to the moving direction of the low-fluidity solid by the conveying unit, the low-fluidity solid and the high-fluidity solid can be reliably separated.

  Therefore, according to the present invention, it is possible to provide a solid mixture separation apparatus main body and a separation method capable of efficiently separating a solid mixture.

It is a block diagram which shows the separation apparatus of the solid mixture which concerns on embodiment of this invention. It is a front view which shows the separation apparatus of the solid mixture which concerns on embodiment of this invention. It is a top view which shows the separation apparatus of the solid mixture which concerns on embodiment of this invention. It is a side view which shows the separation apparatus of the solid mixture which concerns on embodiment of this invention. It is the schematic which shows the structure of the supply part and conveyance part which are used for the separation apparatus of the solid mixture which concerns on embodiment of this invention. It is AA sectional drawing of FIG. The result of an Example is shown, (a) is a graph which shows the relationship between the conveyance speed of a conveyance part, and the recovery rate and purity of a soft tissue, (b) is the flow rate by an airflow formation part, the recovery rate and purity of a soft tissue. It is a graph which shows a relationship.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The solid mixture separation device 10 in this embodiment is a device that separates a mixture of a plurality of solids having different fluidity into a high fluidity solid and a low fluidity solid using an air flow. In this specification, the fluidity refers to a property that a solid moves in the airflow by, for example, a relative relationship between a wind pressure that each solid receives from the airflow and a resistance force that prevents the movement of each solid. For example, a case where a stationary solid moves by an air flow may be a high fluidity solid, and a case where the solid does not move may be a low fluidity solid.

  The solid mixture is not particularly limited, but in the present embodiment, the residue obtained by squeezing the plant into small pieces, specifically, the shredded pieces obtained by cutting or cutting the trunk of the oil palm, is squeezed. The residue after squeezing the sap is used. This residue contains vascular bundles and soft tissues. The soft tissues can be separated and recovered, and ethanol can be produced using the soft tissues.

  The vascular bundle and the soft tissue have different fluidity, and the vascular bundle is a low-flowing solid and the soft tissue is a high-flowing solid. The residue is generally in a state where soft tissue is attached to the vascular bundle, and in this embodiment, it can be supplied as it is to the separation device as a solid mixture. Although the fluidity varies depending on the moisture content, the soft tissue can be sufficiently fluidized by the air flow if the moisture content is after the pressing.

  Next, the configuration of the separation device 10 of the present embodiment will be described.

  As shown in FIGS. 1 to 4, the separation device 10 includes a main body portion 12 having a separation chamber 11, a supply portion 13 for supplying a solid mixture to the separation chamber 11, and a solid mixture disposed in the separation chamber 11. A moving part 14 that moves in one direction while stirring, an airflow forming part 15 that forms an airflow in the separation chamber 11 in a direction opposite to the conveying direction of the conveying part 14, and a pressurized gas is injected into the separation chamber 11 The gas injection part 16 which performs, and the solid-gas separation part 17 which solid-gas separates the mixed gas discharged | emitted from the separation chamber 11 are provided.

  As shown in FIG. 5, the supply unit 13 includes a hopper 21 and a feeder 22 that supplies the solid mixture supplied from the hopper 21 to the separation chamber 11 of the main body 12 by an extrusion flow. The feeder 22 is formed of a screw conveyor, and a screw shaft 24 that is rotationally driven is disposed in a transfer pipe 23 that extends in a uniaxial direction, and is formed in a spiral shape around the screw shaft 24 with a diameter equivalent to that of the transfer pipe 23. The screw 25 is disposed substantially over the entire length. In the supply device 22, the solid mixture supplied from the hopper 21 to one end side is sequentially pushed out by the screw 25 and supplied to the main body 12 from the other end side.

  As shown in FIGS. 5 and 6, the main body 12 includes a separation chamber 11 having a closed cross-sectional structure and extending in a uniaxial direction. A transfer unit 14 is provided at the bottom of the separation chamber 11, and an air flow forming space 26 in which an air flow is formed is provided substantially above the transfer unit 14. In the middle of the upper part of the separation chamber 11, an input port 27 communicating with the supply unit 13 is provided, a first discharge port 28 is provided at one end of the bottom, and a second discharge port is provided at the other end of the upper part. An outlet 29 is provided. The insertion port 27 is disposed at a position intermediate between the first discharge port 28 and the second discharge port 29 so as to be separated from the discharge ports 28 and 29.

  The transport unit 14 includes a paddle conveyor, and includes a transport shaft 31 that is rotationally driven, and a plurality of paddles 32 that are attached around the transport shaft 31 at a pitch of 90 degrees. Each paddle 32 is fixed to the transport shaft 31 while being inclined in the same direction with respect to the circumferential direction. The bottom of the separation chamber 11 has an arcuate cross-sectional shape in which the paddle 32 can be rotated in close proximity or sliding contact.

  In the transport unit 14, each paddle 32 rotates to stir the solid mixture existing on the bottom of the separation chamber 11 while stirring, and the solid mixture or the low-flowing solid is first discharged by the inclination of the paddle 32. The low-flowing solid is discharged from the first discharge port 28 by moving in one direction toward the outlet 28 side.

  Here, by stirring the solid mixture charged from the inlet 27, it is easy to loosen and separate, and the solid mixture in which the high-flowing solid and the low-flowing solid are adhered to each other or agglomerated is stirred. Shear force and impact force are applied, and they are separated from each other. In addition, the solid mixture is scraped up with a paddle to lift and drop the solid mixture upward, thereby making it easy to move the highly fluid solid in the solid mixture by the air flow.

  In the transport unit 14, the rotation speed of the transport shaft 31 can be adjusted, and the angle of the paddle 32 can be adjusted. The rotation speed and the angle of the paddle 32 are adjusted to adjust the transport speed, stirring strength, and scraping amount of the solid mixture or low-flowing solid, thereby enabling separation according to the solid mixture.

  The transport unit 14 is preferably provided continuously from the second discharge port 29 side to the position of the first discharge port 28 with respect to the input port 27, and more preferably provided in the entire length to the second discharge port 29. Is preferred.

  By stirring the solid mixture, the low-flowing solid may float and move to the second outlet 29 side rather than the inlet 27 due to the airflow. In particular, when the difference in fluidity between the high fluidity solid and the low fluidity solid constituting the solid mixture is small, the low fluidity solid easily moves to the second outlet 29 side by the air flow.

  Therefore, if the conveyance part 14 is provided in the 2nd discharge port 29 side rather than the injection port 27, the low-flowing solid which moved to the 2nd discharge port 29 side by airflow at the time of stirring will move to the 1st discharge port 28 side. Thus, the low-flowing solid can be reliably discharged from the first discharge port 28.

  The air flow forming space 26 is continuously provided along the transport shaft 31 from the position of the first discharge port 28 to the position of the second discharge port 29. In the air flow formation space 26, an air flow is formed in the separation chamber 11 in the direction opposite to the transfer direction of the transfer unit 14 by the air flow forming unit 15.

  Here, the airflow is preferably formed from the first discharge port 28 side of the input port 27, and particularly preferably formed over the entire length from the first discharge port 28 to the input port 27. Since the solid mixture is stirred and gradually separated by the transport unit 14, the high fluidity solid contained in the solid mixture moves from the inlet 27 to the first outlet 28 along with the low fluidity solid.

  Therefore, by forming the air flow from the first discharge port 28 side, it is possible to separate more of the high fluidity solid that has moved with the low fluidity solid.

  The airflow forming unit 15 includes a gas suction unit 35 that sucks the gas in the separation chamber 11 from the second discharge port 29 and a gas introduction unit 36 that introduces outside air from the first discharge port 28 side.

  The gas suction part 35 includes a plate fan 38 connected to the second discharge port 29 of the main body part 12 via a suction pipe 37, and sucks the air in the separation chamber 11 together with the high fluidity solid.

  The gas introduction part 36 includes a branch introduction pipe 41 provided connected to an end of the main body 12 on the first discharge port 28 side, an outside air introduction opening 42 provided on one side of the branch introduction pipe 41, and a branch introduction. And a turbo fan 43 provided on the other side of the pipe 41 and capable of introducing pressurized air. The outside air inlet 42 and the turbo fan 43 may be used alternatively.

  In the air flow forming unit 15, the air in the separation chamber 11 is sucked by the gas suction unit 35 while the outside air is pumped from the turbo fan 43 or is taken in from the outside air introduction port 42. An airflow that flows in a direction opposite to the direction in which the solid mixture or the low-flowing solid is conveyed by the conveyance unit 14 is formed in the formation space 26.

  It is preferable that at least one of the suction amount of the gas suction portion 35 and the introduction amount of the gas introduction portion 36 can be adjusted. In the present embodiment, both can be adjusted. Specifically, a dust meter 39 for measuring the solid concentration in the sucked mixed gas is provided on the inlet side of the plate fan 38, and a thermal flow meter 44 for measuring the gas flow rate is provided in the branch introduction pipe 41. On the basis of these measurement results, the opening amount of the outside air inlet 42, the air blowing amount of the turbo fan 43, the gas suction amount of the plate fan 35, and the like can be adjusted manually or automatically. By appropriately adjusting the wind speed, air volume, wind pressure, etc. of the air flow, an air flow according to the highly fluid solid can be formed to improve the separation efficiency.

  The gas injection unit 16 includes a ring blower 46, a branch pressure feed pipe 47 connected to the ring blower 46, a manifold 48 provided at each branched end of the branch pressure feed pipe 47, and a separation chamber 11 of the main body 12. A plurality of injection nozzles 49 disposed downward in the middle in the vertical direction and connected to the manifold 48.

  In the gas injection unit 16, while operating the transport unit 14 and the airflow formation unit 15, the pressurized gas is injected downward from an intermediate position in the vertical direction in the separation chamber 11, so that an upward flow or A gas flow such as a vortex is formed. The gas injection unit 16 injects pressurized gas in the same direction as the rotation direction of the paddle 32. As a result, the high fluidity solid can be lifted from the solid mixture, and the high fluidity solid can be easily moved by the airflow formed by the airflow formation unit 15.

  The solid-gas separation unit 17 includes a cyclone 51 connected to the exhaust side of the plate fan 38 and a bag filter connected to the exhaust side of the cyclone 51 via an extension pipe 52. The bag filter 53 may be provided with a gas suction device 54. If sufficient separation efficiency can be obtained with the cyclone 51, the bag filter 53 may not be provided.

  Exhaust gas from the gas suction unit 35 in the airflow forming unit 15 is sent to the solid-gas separation unit 17 as it is. That is, all the mixed gas of the high fluidity solid sucked by the gas suction part 35 is sent from the separation chamber 11. This exhaust gas is solid-gas separated by the cyclone 51, and the high fluid solid is recovered by the cyclone 51. Further, the bag filter 53 removes a highly fluid solid mixed in a very small amount from the exhaust of the cyclone 51 and releases it to the atmosphere.

  Next, the operation of the separation device 10 will be described.

  As shown in FIG. 1, first, a solid mixture, which is a residue after squeezing, is supplied from a hopper 21 of a supply unit 13 to a supply unit 22, and the solid mixture is pushed out by the supply unit 22 into the separation chamber 11 of the main body unit 12. Supplied.

  In the separation chamber 11, the charged solid mixture falls and is stirred by the paddle 32 of the transport unit 14, and further stirred up to remove the adhered or agglomerated low and high fluid solids. Disperse the mixture and make the solid mixture easy to separate.

  By forming an air flow in the air flow forming space 26 in the separation chamber 11 by the air flow forming unit 15, the highly fluid solid is moved from the solid mixture that is easily separated to the second discharge port 29 side by the air flow. At this time, by injecting the pressurized gas from the gas injection unit 16, the high fluidity solid in the solid mixture is lifted, and more high fluidity solid is moved by the air flow.

  The low-fluidity solid and the unseparated solid mixture that are not easily moved by the airflow are moved to the first discharge port 28 side by the paddle 32 of the transport unit 14. By continuing the stirring and movement by the transport unit 14 in the state where the airflow is formed, more highly fluid solids in the solid mixture can be moved to the second outlet 29 side by the airflow. The low-flowing solid is moved to the first discharge port 28 side by the transport unit 14 as it is.

  In the separation chamber 11, the low-flowing solid moves to one side by the transfer unit 14, reaches the first discharge port 28 and is discharged from the discharge duct 30, and the high-flowing solid is moved in the direction opposite to the transfer direction by the air flow. It moves, is discharged from the 2nd discharge port 29 as a mixed gas with an air current, and is transferred to the solid-gas separation part 17. In this way, the high fluidity solid and the low fluidity solid are sufficiently separated.

  At the time of separation, for example, the conveyance unit 14 and the airflow forming unit 15 may be automatically adjusted based on measurement results of a dust meter provided in the gas suction unit 35, a thermal flow meter provided in the gas introduction unit 36, and the like.

  The mixed gas discharged from the second discharge port 29 is solid-gas separated by the cyclone 51 of the solid-gas separation unit 17, and a highly fluid solid is recovered from the lower duct 50 of the cyclone 51. Even if a small amount of highly fluid solid is contained in the exhaust gas of the cyclone 51, it is almost completely separated by the subsequent bag filter 53.

  The solid-gas separation unit 17 can prevent the low-flowing solid from being mixed into the high-flowing solid recovered by the solid-gas separation unit 17 by appropriately adjusting the transport unit 14 and the airflow forming unit 15.

  As a result, high flow solids in the solid mixture are recovered from the lower duct 50 and low flow solids are recovered from the discharge duct 30. In the present embodiment, the recovered highly fluid solid is directly used for ethanol production.

  According to the solid mixture separation apparatus 10 as described above, since the solid mixture is stirred by the transport unit 14, even when the solids constituting the solid mixture are adhered or aggregated to each other, shearing is performed between the solids. By applying force or impact force, they can be separated from each other, and the solid mixture can be dispersed in the separation chamber 11. As a result, the solid mixture can be easily separated due to the difference in fluidity between the solids.

  Since an air stream is formed by the gas forming part in the separation chamber 11 in a state where the solid mixture is easily separated by stirring, a highly fluid solid having high fluidity can be moved by the air stream. On the other hand, since the low fluidity solid with low fluidity is moved by the transport unit 14, it can be moved in the transport direction of the transport unit 14 without being influenced by the airflow. Therefore, it is possible to reliably separate the solid mixture into a high fluidity solid and a low fluidity solid due to the difference in fluidity.

  In particular, since the moving direction of the low-fluidity solid by the transport unit 14 and the moving direction of the high-fluidity gas by the airflow are reversed, it is possible to accurately separate the low-fluidity solid and the high-fluidity solid. is there.

  In addition, the function of facilitating separation of the solid mixture and the function of moving the low-flowing solid can be realized simultaneously by the transport unit 14, and the moving direction of the low-flowing solid and the moving direction of the high-flowing gas are reversed. Thus, since the separation can be performed efficiently, the transport unit 14 can be shortened and made compact, so that the apparatus configuration can be simplified.

  Further, in the separation device 10, a first discharge port 28 for discharging the low-flowing solid is provided at a position separated from the input port 27 in one direction which is the transfer direction of the transfer unit 14. A second discharge port 29 that discharges the high fluidity solid is provided at a position spaced apart in the direction opposite to the transfer direction of the transfer unit 14. Therefore, the high-fluidity solid and the low-fluidity solid in the solid mixture charged into the separation chamber 11 from the charging port 27 move from the charging port 27 in the opposite directions and are discharged respectively. Therefore, both the low-flowing solid discharged from the first discharge port 28 and the high-flowing solid discharged from the second discharge port 29 can be sufficiently separated, and both can be separated more efficiently. .

  In the separation device 10, the transport unit 14 includes a paddle 32 that moves the solid mixture in one direction while scooping up the solid mixture. If the transport unit 14 is the paddle 32, the solid mixture or the low-flowing solid is pushed and moved by the paddle 32, so that all the solids arranged on the bottom side of the separation chamber 11 can be reliably moved in the separation chamber 11. The solid mixture can be dispersed in an easy-to-separate state by reliably lifting and dropping all the solids arranged on the top and bottom sides. Therefore, the separation efficiency can be improved.

  In the separation device 10, the airflow forming unit 15 includes a gas suction unit 35 that sucks gas from the second discharge port 29 and a gas introduction unit 36 that introduces outside air from the first discharge port 28 side. An air flow can be formed in a wide range in the chamber 11, and the separation efficiency of the solid mixture can be improved. Moreover, since at least one of the suction amount of the gas suction portion 35 and the introduction amount of the gas introduction portion 36 can be adjusted, an appropriate separation process according to the properties of the solid mixture can be achieved by adjusting the air flow in the separation chamber 11. Can be realized.

  In the separation device 10, an inlet 27 is connected to a feeder 22 that supplies the solid mixture to the separation chamber 11 by an extrusion flow. Therefore, a large amount of the solid mixture before charging is disposed in the feeder 22 or a screw 25 for pushing out the solid mixture is disposed in the transfer pipe 23, so that the gas from the separation chamber 11 to the feeder 22 is supplied. Inflow can be reduced or prevented. Therefore, it is possible to prevent gas from entering and exiting the inlet 27 and to form an appropriate air flow in the separation chamber 11.

  Since the separation device 10 includes the gas injection unit 16 that injects the pressurized gas downward from the intermediate position in the vertical direction in the separation chamber 11, the high flow rate that exists in the free state in the solid mixture of the transport unit 14. The volatile solid can be levitated by the pressurized gas from the gas injection unit 16. Therefore, the separation of the high fluidity solid can be promoted.

  In this separation apparatus 10, since the solid mixture is made up of a residue obtained by squeezing and squeezing a plant, the moisture in the solid mixture is reduced, and even if the solid mixture is obtained by pulverizing a plant, it is separated using an air flow. be able to.

  Since a vascular bundle and a soft tissue have a large difference in physical quantity that affects fluidity, such as shape and size, separation can be performed efficiently by using the separation device 10 of the present embodiment.

  The above-described embodiment can be appropriately changed within the scope of the present invention.

  For example, in the above description, an example in which a vascular bundle and a soft tissue are separated as a solid mixture has been described. However, if solids having different fluidity are mixed in an airflow formed in the separation chamber 11, The separation target is not limited. The components constituting the solid mixture need not be two kinds, and a large number of components may be mixed.

  In the above embodiment, an example in which a paddle conveyor is used as the conveyance unit 14 provided in the separation chamber 11 has been described. However, for example, a solid mixture such as a screw conveyor or a vibration conveyor can be stirred and dispersed in a state where it can be easily separated. If it is a thing, it is possible to use another conveyance means.

  Examples of the present invention will be described below.

  Oil palm was refined with a shredder and the residue obtained by squeezing the oil palm was separated into a vascular bundle and a soft tissue by the separation device 10 shown in the above embodiment. In addition, the conveyance part 14 used that the total length is 2000 mm, the rotation radius of the paddle 32 is 370 mm, the inclination of the paddle is 45 degrees with respect to the circumferential direction, and the distance between the inlet 27 and the first outlet 28 is 600 mm. As the plate fan 38, (CPFI-No. 2-1 / 2) manufactured by Teral Co., Ltd. was used.

  Purity and recovery rate of the soft tissue obtained from the lower duct 50 of the cyclone 51 by changing the rotational speed of the plate fan 38 at 1430 rpm (about 8 m / sec) and changing the rotational speed of the paddle from 23 to 93 rpm at a substantially constant flow rate. Was measured. The results are shown in FIG.

Here, the purity is the ratio of the soft tissue contained in the soft tissue fraction separated from the cyclone 51. The recovery rate is the ratio of the soft tissue contained in the soft tissue fraction to the total soft tissue, and is determined by the following formula.
[Formula 1]
Recovery rate (%) = (Amount of soft tissue of fractionated soft tissue fraction) / (Amount of soft tissue of fractionated soft tissue fraction + Amount of soft tissue contained in vascular bundle fraction)
Next, the rotational speed of the paddle 32 is set to 70 rpm, the outside air inlet 42 is set to a constant opening amount, the rotational speed of the plate fan 38 is changed from 500 to 1700 rpm, and the purity of the soft tissue obtained from the lower duct 50 of the cyclone 51 is obtained. And recovery was measured. The results are shown in FIG.

  As is clear from FIGS. 7A and 7B, the separation apparatus 10 according to the embodiment in which the conveyance direction and the airflow direction are reversed can recover a high purity soft tissue with a high recovery rate.

DESCRIPTION OF SYMBOLS 10 Separation apparatus 11 Separation chamber 12 Main body part 13 Supply part 14 Transport part 15 Air flow formation part 16 Gas injection part 17 Solid gas separation part 21 Hopper 22 Feeder 23 Transfer pipe 24 Screw shaft 25 Screw 26 Air flow formation space 27 Input port 28 1 discharge port 29 second discharge port 30 discharge duct 31 transport shaft 32 paddle 35 gas suction part 36 gas introduction part 37 suction pipe 38 plate fan 39 dust meter 41 branch introduction pipe 42 outside air introduction port 43 turbo fan 44 thermal flow meter 46 ring Blower 47 Branch pressure feeding pipe 48 Manifold 49 Injection nozzle 50 Lower duct 51 Cyclone 52 Extension pipe 53 Bag filter 54 Gas suction device

Claims (4)

A main body of a separation apparatus for charging a mixture of a plurality of solids having different fluidity into a separation chamber, and separating a low fluidity solid to one end side of the separation chamber and a high fluidity solid to the other end side,
A transport unit that is provided at the bottom of the separation chamber and transports the low-flowing solid to one end while stirring and stirring the solid mixture in the separation chamber;
An air flow is formed in the space in the separation chamber above the transfer unit in a direction opposite to the transfer direction of the transfer unit, and the highly fluid solid floating in the space is moved to the other end side by the air flow. A solid mixture separation device main body comprising: an airflow forming unit;   2. The solid mixture separator main body according to claim 1, further comprising a gas injection unit that injects pressurized gas into the separation chamber to lift the highly fluid solid. A method for separating a solid mixture, wherein a mixture of a plurality of solids having different fluidity is introduced into a separation chamber, and a low fluidity solid is separated into one end side of the separation chamber and a high fluidity solid is separated into the other end side. ,
The transport unit provided at the bottom of the separation chamber conveys the low-flowing solid to one end while stirring and stirring the solid mixture in the separation chamber.
An air flow is formed in a space in the separation chamber above the transfer unit in a direction opposite to the transfer direction of the transfer unit, and the high-fluidity solid floats in the space and is moved to the other end side by the air flow. Separating the solid mixture. The method for separating a solid mixture according to claim 3, wherein pressurized gas is injected into the separation chamber to cause the highly fluid solid to float in a space above the transport unit.

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