WO2016194669A1 - Procédé pour décharger des résidus dans des dispositifs de traitement de poudre et système pour décharger des résidus dans des dispositifs de traitement de poudre - Google Patents

Procédé pour décharger des résidus dans des dispositifs de traitement de poudre et système pour décharger des résidus dans des dispositifs de traitement de poudre Download PDF

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Publication number
WO2016194669A1
WO2016194669A1 PCT/JP2016/065126 JP2016065126W WO2016194669A1 WO 2016194669 A1 WO2016194669 A1 WO 2016194669A1 JP 2016065126 W JP2016065126 W JP 2016065126W WO 2016194669 A1 WO2016194669 A1 WO 2016194669A1
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WO
WIPO (PCT)
Prior art keywords
powder
casing
dry ice
shaft
discharge
Prior art date
Application number
PCT/JP2016/065126
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English (en)
Japanese (ja)
Inventor
久継 高島
章二 酒井
Original Assignee
株式会社奈良機械製作所
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Filing date
Publication date
Application filed by 株式会社奈良機械製作所 filed Critical 株式会社奈良機械製作所
Priority to JP2017521820A priority Critical patent/JP6215509B2/ja
Publication of WO2016194669A1 publication Critical patent/WO2016194669A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/712—Feed mechanisms for feeding fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined

Definitions

  • the present invention relates to a method for discharging a residue from a powder processing apparatus.
  • the powder processing apparatus which processes in a casing for the purpose of drying etc. is proposed.
  • the powder in the casing is sequentially moved toward the discharge port and discharged by the pushing force of the powder input from the supply port.
  • the powder remains at least in the gap between the inner peripheral surface of the casing 1 and the outermost peripheral raceway surface of the scraping plate 16 of the rotating body 15.
  • the powder having a larger angle of repose (evaluation method on the fluidity of the powder) remains in a mountain shape between the adjacent rotary bodies 15. Specifically, after the supply of the powder is stopped, the effective volume of the casing 1 is 15 even if the rotating body 15 is rotated for a long time or the powder having good fluidity such as the powder of synthetic resin.
  • an object of the present invention is to provide a method and a discharge system for discharging powder remaining in the casing after the powder processing is completed in the powder processing apparatus.
  • a residue discharge method includes a casing, a supply port provided at an upper portion of one end portion of the casing, and a discharge port provided at a lower portion of the other end portion of the casing. Is a residue discharge method in a powder processing apparatus in which the powder in the casing is pushed toward the discharge port and moves toward the discharge port. A powder charging stop step for stopping charging, and a sublimable solid particle charging step for charging sublimable solid particles that sublime at room temperature and normal pressure from the supply port after the powder charging stop step.
  • the powder remaining in the casing can be pushed out and discharged by sublimable solid particles.
  • the sublimable solid particles exfoliate the adhered powder in the casing by volume expansion during sublimation, and then the sublimable solid particles are naturally discharged together with the powder from the casing, so that the residual powder in the casing is discharged. In addition, a cleaning effect in the casing can be obtained. Since the sublimable solid particles and powder discharged are vaporized at room temperature and normal pressure, the sublimable solid particles do not need to be separated from the residual powder, and the residual powder can be used as a processed product as it is.
  • the powder processing apparatus has a dam plate for damming the powder moving toward the discharge port in the casing, and an opening for discharging the powder in the casing at a lower portion of the dam plate,
  • the opening is in a closed state during powder processing, and the opening is in an open state after the powder charging stop step and until the sublimable solid particle charging step. , Closed during the sublimable solid particle charging step.
  • the heat exchanger further includes a shaft that is pivotally mounted on the casing and on which a plurality of rotating bodies are arranged, the rotating body is hollow, a heat exchange medium passes through the inside, and the powder inside the casing is heated or cooled.
  • the powder charging stop step and the sublimable solid particle charging step are performed in a state where the heat exchange medium is continuously supplied to the rotating body via the shaft.
  • the shaft is formed of a metal having a body-centered cubic lattice.
  • the sublimable solid particles are dry ice particles.
  • the powder in the casing is discharged, the sublimable solid particles remaining after the powder discharge, and the post-sublimation This gas can be effectively discharged from the casing.
  • the residue discharge system includes a casing, a shaft that is pivotally mounted on the casing and on which a plurality of rotating bodies are disposed, a supply port provided at an upper portion of one end of the casing, and the other of the casing.
  • a powder processing device that has a discharge port provided at the lower part of the end, processes the powder charged from the supply port in the casing, and discharges the powder from the discharge port; and sublimates at room temperature and normal pressure
  • the powder processing apparatus is configured to move the powder in the casing toward the discharge port by the pushing force of the powder input from the supply port.
  • the sublimable solid particles are introduced from the inlet.
  • the sublimable solid particles are dry ice particles having an average particle size of 3 to 10 mm.
  • the dry ice particles have a cylindrical shape having a cross-sectional diameter of 5 mm or less and a length of 20 mm or less.
  • a method of efficiently discharging powder remaining in a casing in a short time using the plug flow property (also referred to as piston flow property) of powder. And discharge system can be provided.
  • FIG. 2 is a sectional view taken along line AA in FIG. 1.
  • FIG. 2 is a sectional view taken along line BB in FIG. It is sectional drawing which shows the circumference
  • a powder having poor fluidity remains in the powder processing apparatus.
  • the prior art shows a state in which powder having good fluidity remains in the powder processing apparatus.
  • the residue discharge system of the powder processing apparatus including the stirring-type drying apparatus in the present embodiment includes a casing 1, a first support base 2a, a second support base 2b, a jacket 3, a heat exchange medium distribution pipe 4, and a heat exchange medium discharge.
  • Pipe 5 hollow shaft 6, front bearing 7, rear bearing 8, gear 9, sprocket 10, first rotary joint 11a, second rotary joint 11b, heat exchange medium supply pipe 12, heat exchange medium discharge pipe 14 , Rotating body 15, scraping plate 16, cover 17, supply port 18, powder distribution pipe 19, quantitative supply device 20, weir plate (overflow gate) 21, discharge plate (underflow gate) 22, discharge port 23, fastening Tool 24, discharge plate opening / closing shaft 25, front carrier gas inlet 26, rear carrier gas inlet 27, carrier gas outlet 28, exhaust pipe 29, powder separator 30, exhaust Blower 31, dry ice particle buffer tank 32, dry ice particle supply pipe 33, first shaft support (support) 34, second shaft support (support) 35, bearing 36, handle 37, rotary valve 38, heat exchange medium A circulation path 39 and a notch (opening) 40 are
  • FIG. 1 shows a portion where these members are present so that the structure around the rotating body 15 and the scraping plate 16 that cannot be seen from the outside, and the structure around the dam plate 21 and the discharge plate 22 can be seen. A part of the casing 1 is cut away to show the inner structure.
  • the casing 1 extends in a substantially horizontal direction, has a substantially U-shaped cross section, and forms a substantially W-shaped arc shape at the bottom.
  • a jacket 3 forming an exchange medium circulation path 39 is provided.
  • the casing 1 is supported by a first support 2a and a second support 2b.
  • the first support 2a and the second support 2b support the casing 1 in a horizontal state or in a state where the first support 2a and the second support 2b are inclined so that the second support 2b side (discharge port 23 side) is lowered.
  • the 1st support stand 2a side is made into the front part of an apparatus
  • the 2nd support stand 2b side is made into the rear part of an apparatus.
  • the heat exchange medium distribution pipe 4 is provided at the front end of the jacket 3 for the inlet of the heat exchange medium passing through the heat exchange medium circulation path 39.
  • the heat exchange medium discharge pipe 5 is provided at the rear end of the jacket 3 for the outlet of the heat exchange medium passing through the heat exchange medium circulation path 39.
  • a gear 9 is provided at each front portion of the shaft 6, and both the gears 9 are meshed so as to rotate in opposite directions.
  • a sprocket 10 is provided on one side of the shaft 6 and connected to a motor (not shown) via a chain (not shown) hung on the sprocket 10.
  • each shaft 6 is connected to the heat exchange medium supply pipe 12 through the first rotary joint 11a.
  • the rear end of each shaft 6 is connected to the heat exchange medium discharge pipe 14 via the second rotary joint 11b.
  • Each of the shafts 6 is provided with a plurality of rotating bodies 15 at regular intervals.
  • a hollow fan-shaped heat exchanger is used as the rotating body 15.
  • the rotating body 15 is formed in a wedge shape so that the front end in the rotation direction is narrow, and a scraping plate 16 is provided at a wide rear end. Then, two such rotating bodies 15 are arranged as a set, and the two rotating bodies 15 are arranged so as to have a point-symmetrical positional relationship around the shaft 6 as shown in FIG. Further, the two rotating bodies 15 are arranged so that the front end of one rotating body 15 faces the rear end of the other rotating body 15 and at a certain interval, that is, with a gap provided. .
  • the scraping plate 16 scrapes the powder in the same direction as the rotation direction.
  • the rotating body 15 provided on the shaft 6 is not limited to a hollow fan blade shape, and may be a hollow disk shape without a gap. Further, the rotating body 15 may be arranged so that there are one or three or more gap portions.
  • the two shafts 6 are preferably disposed in the casing 1 with their phases shifted so that the gap between the pair of rotating bodies 15 is shifted by approximately 90 degrees.
  • the rotating body 15 is provided at the same position in the axial direction (arranged so that the front rotating body 15 and the rear rotating body 15 overlap each other when viewed from the axial direction).
  • a configuration may be adopted in which rotating bodies 15 adjacent to each other in the front-rear direction (axial direction) on one axis are arranged in a spiral manner in the axial direction with a phase shifted by a constant angle.
  • the shaft 6 is provided with two communicating holes for each rotating body 15 so that the shaft 6 and the rotating body 15 communicate with each other. Then, the heat exchange medium supplied to the heat exchange medium supply pipe 12 enters the shaft 6 via the first rotary joint 11a, and then enters the rotating body 15 via one communication hole, and passes through the other communication hole. To the shaft 6 and discharged from the heat exchange medium discharge pipe 14 via the second rotary joint 11b. When the heat exchange medium passes, the shaft 6 and the rotating body 15 function as a heat exchanger that heats, dries, and cools the powder in the casing 1.
  • the form in which two shafts 6 are provided has been described.
  • the number of shafts 6 is not limited to two, and may be one or three or more.
  • a cover 17 is provided on the upper portion of the casing 1.
  • a treatment powder supply port 18 is provided at the front end of the cover 17.
  • the supply port 18 is connected to a powder quantitative supply device 20 via a powder distribution pipe 19.
  • a dam plate 21 is provided for retaining a certain amount of treated powder in the casing 1 (damming). A part of the lower part of the dam plate 21 is cut out, and the cutout part (opening part) 40 is movable for discharging the powder in the casing 1 during natural discharge processing, which will be described later.
  • a discharge plate 22 of the type is provided.
  • a discharge port 23 is provided at the rear end of the casing 1 (downstream of the dam plate 21), the processed powder that has passed over the dam plate 21 and the powder discharged from the open opening 40 are discharged out of the casing 1.
  • a discharge port 23 is provided at the rear end of the casing 1 (downstream of the dam plate 21).
  • the discharge plate 22 is fixed to the discharge plate opening / closing shaft 25 by a fastener 24 so as to be rotatable (see FIGS. 3 to 5).
  • the discharge plate opening / closing shaft 25 is supported by a first shaft support member 34, a second shaft support member 35, and a bearing 36, and a handle 37 is provided at the tip thereof.
  • the discharge plate 22 rotates about the discharge plate opening / closing shaft 25 as a fulcrum, thereby opening and closing the opening 40.
  • a front carrier gas inlet 26 is provided at the front end of the cover 17, and a rear carrier gas inlet 27 is provided at the rear end of the cover 17.
  • the front carrier gas inlet 26 and the rear carrier gas inlet 27 are provided with carrier gas (air, non-volatile) for discharging volatile components (water vapor, organic solvent, etc.) evaporated from the treated powder in the casing 1 to the outside of the system. Active gas etc.) are introduced.
  • the carrier gas is discharged from a carrier gas discharge port 28 provided in the vicinity of the intermediate portion of the cover 17.
  • the carrier gas discharge port 28 is connected to an exhaust blower 31 via an exhaust pipe 29 and a powder separator 30 such as a cyclone.
  • the dry ice particle buffer tank 32 is provided upstream of the powder quantitative supply device 20.
  • the dry ice particles are discharged from the residual powder in the casing 1, the rotary ice 38, the dry ice particle supply pipe 33, The powder is supplied into the casing 1 via a powder quantitative supply device 20.
  • the dry ice particle buffer tank 32 is connected to a dry ice generator (not shown), and the dry ice particles produced by the dry ice generator are continuously supplied to the dry ice particle buffer tank 32.
  • the purchased dry ice particles may be put into the dry ice particle buffer tank 32 all at once.
  • the operator supplies a heat exchange medium such as warm water, water vapor, and heat transfer oil heated to a predetermined temperature to the heat exchange medium circulation path 39 and the shaft 6.
  • a heat exchange medium such as warm water, water vapor, and heat transfer oil heated to a predetermined temperature
  • the heat exchange medium is water vapor
  • the water vapor supplied to the heat exchange medium circulation path 39 heats the casing 1, and then the water vapor becomes a condensate and is discharged from the heat exchange medium discharge pipe 5.
  • the steam supplied to the shaft 6 heats the shaft 6 and the rotator 15 and then becomes a condensate and is discharged from the heat exchange medium discharge pipe 14.
  • the operator drives the motor to rotate the two shafts 6 at a constant rotational speed.
  • the opening 40 is kept closed.
  • the operator After the temperatures of the heat exchange medium circulation path 39 and the rotating body 15 become constant, the operator operates the powder quantitative supply device 20 to continuously supply the processed powder into the casing 1.
  • the treated powder supplied into the casing 1 is pressed by the powder supplied from the quantitative supply device 20, that is, the treated powder supplied later, the pressure due to the filling height at the supply port 18, and as required.
  • the inside of the casing 1 gradually moves to the side of the dam plate 21 through the portion and the gap between the inner peripheral surface of the casing 1 and the rotating body 15.
  • the powder is stirred by the rotation of the rotating body 15 and heated by the rotating body 15 and the casing 1.
  • the powder charged at the start of operation that is, the pre-filled powder reaches the end of the casing 1, that is, the end, it is blocked by the dam plate 21, so that the powder layer in the casing 1 gradually increases.
  • the powder layer in the casing 1 gradually increases.
  • the powder is discharged from the upper end of the dam plate 21 through the discharge port 23.
  • Volatile components evaporated from the powder heated by the rotator 15 or the casing 1 are supplied from the front carrier gas inlet 26 and the rear carrier gas inlet 27 and pass through the powder upper layer of the casing 1.
  • the exhaust gas is discharged from the carrier gas outlet 28 through the exhaust pipe 29, the powder separator 30, and the exhaust blower 31.
  • the fine powder discharged along with the carrier gas is separated from the carrier gas by the powder separator 30 and collected.
  • powder is discharged without using dry ice particles (natural discharge).
  • the operator stops supplying powder to the quantitative supply device 20 or supplying powder from the quantitative supply device 20, and after continuing the drying process for a while, rotates the discharge plate opening / closing shaft 25 using the handle 37. Then, the opening 40 is opened (powder charging stop step).
  • the powder in the casing 1 is subjected to thrust in a direction parallel to the shaft 6 (rear direction) due to the pressure depending on the filling height, the inclination of the casing 1 provided as necessary, the rotation of the shaft 6 and the like, and continues.
  • the casing 1 moves toward the opening 40 and is discharged from the opening 40 through the discharge port 23 to the outside of the apparatus.
  • all the powder in the casing 1 cannot be discharged and varies depending on the physical properties of the treated powder, but in the case of a powder with poor fluidity, the powder shown in FIG. Even in the case of a body, as shown in FIG. 8, the gap between the inner peripheral surface of the casing 1 and the outermost track surface of the scraping plate 16 of the rotating body 15, or the rotating body 15 adjacent to the rotating body 15 in the front-rear direction. In between, powder remains.
  • dry powder is discharged using dry ice particles.
  • the operator rotates the discharge plate opening / closing shaft 25 using the handle 37 and closes the opening 40 again.
  • the supply of the heat exchange medium is continued during the powder charging stop step and the dry ice charging step described later.
  • the casing 1 and the shaft 6 are cooled by dry ice particles, and the casing 1 and the shaft 6 are made of body-centered cubic lattice such as carbon steel (atomic atoms at the center and apex of the cube). If the heat exchange medium is stopped during both steps, the sliding of the shaft 6 and the rotary joint 11 may occur. The main reason is that there is a risk that the sliding portion of the rotary joint 11 is damaged because the shaft 6 rotates in a state where the moving surface is dry.
  • the worker can close the jacket 3, the shaft 6 and the rotating body when the opening 40 is closed.
  • the supply of the heat exchange medium to 15 may be stopped.
  • the shaft 6 and the rotating body 15 is cooled by dry ice and solidifies (becomes ice), the volume expansion causes the jacket 3 and
  • this operation (the operation of discharging the residue by stopping the supply of the heat exchange medium to the rotary joint 11 during the dry ice charging step) is performed. ) Is preferably performed in a short time.
  • the operator operates the rotary valve 38 to put the dry ice particles in the dry ice particle buffer tank 32 into the fixed amount supply device 20 through the dry ice particle supply pipe 33, and the fixed amount supply device. 20 is activated (dry ice charging step). At this time, the operator confirms in advance that no powder remains in the quantitative supply device 20.
  • the dry ice particles charged into the fixed amount supply device 20 are supplied into the casing 1 from the supply port 18 through the powder distribution pipe 19.
  • the dry ice particles previously supplied into the casing 1 were provided as required by the pushing force by the dry ice particles introduced later, the pressure at the filling height at the supply port 18, and the like, as with the powder. Due to the inclination of the casing 1, the rotation of the shaft 6, etc., the thrust in the direction parallel to the shaft 6 (rear direction) is received, and the inside of the casing 1 gradually moves toward the weir plate 21.
  • the powder that has been widely dispersed and remained on the inner peripheral surface (bottom surface) of the casing 1 is pushed by the dry ice particles and gradually gathers on the side of the dam plate 21.
  • the adhered powder peels off from the respective surfaces due to the volume expansion during the sublimation of the dry ice particles in contact with the powder. And it moves to the weir plate 21 side with dry ice particles.
  • the plug flow property also referred to as piston flow property
  • the mixing of the treated powder that has entered first and the dry ice particles that have entered later is as much as possible. It can be suppressed.
  • the operator stops the supply of dry ice particles to the quantitative supply device 20 or the operation of the quantitative supply device 20. If the supply of the heat exchange medium to the jacket 3, the shaft 6, and the rotating body 15 is stopped in the dry ice charging step, the supply of the heat exchange medium is resumed to promote sublimation of the dry ice particles. Is preferred.
  • the dry ice particles remaining in the casing 1 are sublimated and become carbon dioxide, and are discharged out of the system through the exhaust pipe 29 from the carrier gas discharge port 28 by the suction port 23 and the suction force of the exhaust blower 31.
  • the operator stops the supply of the heat exchange medium to the heat exchange medium circulation path 39 and the shaft 6 and also stops the rotation of the two shafts 6.
  • the powder remaining in the casing 1 can be pushed out and discharged by dry ice particles.
  • the dry ice particles peel off the powder adhering to the surface of the casing 1, the shaft 6, and the rotating body 15 by volume expansion during sublimation, and then the dry ice particles are naturally discharged together with the powder from the casing 1. Therefore, the inside of the casing 1 can be cleaned together with the discharge of the residual powder in the casing 1.
  • the residual powder can be handled as a product.
  • the powder in the casing 1 is controlled by controlling the opening / closing of the discharge plate 22 (opening control of the opening) and the on / off control of the exhaust blower 31 in the powder charging stop step and the dry ice charging step after the drying process. Dry ice particles remaining after body discharge, powder discharge, and carbon dioxide after sublimation can be effectively discharged from the casing 1.
  • the dry ice particles used in this embodiment preferably have an average particle diameter of 3 to 10 mm, more preferably a cylindrical shape having a cross-sectional diameter of 5 mm or less and a length of 20 mm or less.
  • the structure in which the heat exchange medium for heat exchange passes inside the jacket 3 and the like has been described, but the sublimation of the dry ice particles is possible without a heating mechanism.
  • the form using dry ice particles as the sublimable solid particles that are granular and sublimate (phase transition from solid to gas) at room temperature and normal pressure has been described.
  • other particulate sublimable substances may be used.
  • the form to be used may be used.
  • ABS resin Acrylonitrile Butadiene Styrene Copolymerized Synthetic Resin
  • water vapor as a heat exchange medium is supplied to the heat exchange medium circulation path 39, the shaft 6 and the rotating body 15, and then the shaft 6 is rotated at a rotation speed of 30 min ⁇ 1 so that the temperature in the casing 1 becomes 120 ° C. I waited for you.
  • ABS resin particles were quantitatively supplied into the casing 1 to perform a drying process. After the introduction of the ABS resin particles was completed, the drying process was performed for a while and then the opening 40 was opened. The ABS resin particles were naturally discharged for about 15 minutes until the ABS resin particles became about 30% of the volume in the casing 1. .
  • the opening 40 was closed, and dry ice particles were continuously charged at a supply rate of 90 kg / Hr so that the residence time in the casing 1 was 20 minutes, and the amount of ABS resin particles discharged every 2 minutes was measured. .
  • the supply of dry ice particles was stopped and the dry ice particles were sublimated 30 minutes after the start of the introduction of the dry ice particles (1.5 times the residence time of the dry ice particles in the casing 1). Thereafter, the rotation of the shaft 6 was stopped, ABS resin particles remaining in the casing 1 were collected, and the amount thereof was measured.
  • the amount of ABS resin particles remaining in the casing 1 was an extremely small amount of 1% of the effective volume in the casing 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention concerne un procédé pour décharger de la poudre restante à l'intérieur d'un carter d'un dispositif de traitement de poudre. La présente invention concerne un procédé pour décharger des résidus dans un dispositif de traitement de poudre, qui comprend un carter, un orifice d'alimentation situé sur le haut au niveau d'une extrémité du carter, et un orifice de décharge situé sur le fond au niveau de l'autre extrémité du carter, et qui déplace la poudre dans le carter vers l'orifice de décharge par la poudre poussée par la poudre introduite à partir de l'orifice d'alimentation, le procédé comprenant une étape d'arrêt d'introduction de poudre pour arrêter l'introduction de la poudre à partir de l'orifice d'alimentation lorsque le traitement de poudre est terminé, et une étape d'introduction de particules solides sublimables pour introduire des particules solides sublimables qui se subliment à une température et une pression normales à partir de l'orifice d'alimentation.
PCT/JP2016/065126 2015-06-03 2016-05-23 Procédé pour décharger des résidus dans des dispositifs de traitement de poudre et système pour décharger des résidus dans des dispositifs de traitement de poudre WO2016194669A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017521820A JP6215509B2 (ja) 2015-06-03 2016-05-23 粉体処理装置の残留物排出方法、及び粉体処理装置の残留物排出システム

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JP2015-112766 2015-06-03
JP2015112766 2015-06-03

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WO2016194669A1 true WO2016194669A1 (fr) 2016-12-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111595134A (zh) * 2020-05-30 2020-08-28 徐州蔬客达农业科技有限公司 粮食干燥机

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Publication number Priority date Publication date Assignee Title
JP2004150641A (ja) * 2002-10-28 2004-05-27 Nara Kikai Seisakusho:Kk 粉粒体の攪拌型乾燥装置及び乾燥システム
JP2011161310A (ja) * 2010-02-04 2011-08-25 Jgc Corp 容器洗浄装置及び容器洗浄方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004150641A (ja) * 2002-10-28 2004-05-27 Nara Kikai Seisakusho:Kk 粉粒体の攪拌型乾燥装置及び乾燥システム
JP2011161310A (ja) * 2010-02-04 2011-08-25 Jgc Corp 容器洗浄装置及び容器洗浄方法

Cited By (1)

* Cited by examiner, † Cited by third party
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