TW201418653A - Drying processing system for processing subject having fluid properties, and method for manufacturing dried object using this system - Google Patents

Abstract

A processing system (1) having: a first tank (361) that temporarily receives and preheats a processing subject (4) having fluid properties; a second tank (410) that receives the processing subject (4) having been preheated by the first tank (361) and performs a heating/drying process; and a heat recovery unit (500) that heats the first tank (361) using heat from exhaust air (6) containing water vapor and exhausted from the second tank (410). Furthermore, this processing system (1) has an agitation unit that agitates by rotating blades (431) in the second tank (410), and the second tank (410) includes an exhaust port (460) that exhausts the exhaust air (6) containing water vapor, with the opening of the exhaust port in the second tank (410) facing the direction in which the blades (431) rotate.

Description

System for drying treatment of fluidity

The present invention relates to a system for drying a treatment object for fluidity.

Japanese Laid-Open Patent Publication No. 2005-337631 discloses a drying apparatus which can completely remove the dried matter adhering to the inside of the drying chamber and promote the pulverization of the dried product to improve the drying efficiency. The drying device has a vertical cylindrical shape or a conical trapezoidal shape and includes a drying chamber having an input port and a discharge port of the object to be dried, a heating means for heating the drying chamber, and a rotating shaft standing at the center of the drying chamber; a rotary drive mechanism for rotationally driving the rotary shaft; a plurality of cross arms arranged at intervals on the rotary shaft and arranged in multiple stages; and a plurality of agitating blades mounted on the cross arms and having: an upper surface thereof The direction is inclined downward; and the scraping edge portion scrapes off the object to be dried attached to the circumferential surface of the drying chamber by the rotation of the rotating shaft. Each of the scraping edge portions of all the stirring blades is scraped off in a range in which the object to be dried in the upper and lower directions of the object to be dried on the circumferential surface of the drying chamber is continuous in the downward direction of the circumferential surface of the drying chamber.

[Previous Technical Literature] [Patent Literature]

Japanese National Patent Publication No. 2005-337631

The system for heating and drying the object to be treated for fluidity is expected to further reduce the time and cost required for drying.

An aspect of the present invention provides a system including: a first tank that temporarily collects and preheats a fluid processing object; and a second tank that is preheated by the first tank The object to be processed is subjected to heat drying treatment, and the heat recovery unit heats the first tank by heat of the exhaust gas discharged from the second tank.

In the process of drying the fluidity of the object to be treated in the second tank, the exhaust gas containing water vapor is discharged from the second tank, and the exhaust gas is discarded to the outside through a dust collector or the like. In this system, the first tank in which the object to be processed which is dried in the second tank is temporarily taken in the upstream of the second tank is provided, and the first tank is heated by the heat (exhaust heat) of the exhaust gas in the second tank. The object to be treated after the first tank is preheated is supplied to the second tank. By heating (preheating) the object to be treated which is temporarily stored in the first tank upstream of the second tank by the heat removal in the second tank, the cost required for drying can be reduced.

Moreover, by supplying the object to be processed which is preheated in the first tank to the second tank, the time required for drying can be shortened. Further, the fluidity of the object to be processed can be improved by preheating the object in the first groove. Therefore, the conveyance of the object to be processed is facilitated when it is supplied from the first tank to the second tank, and the object to be processed can be transferred to the second tank by a low-cost system such as a pipe or a screw feeder.

Preferably, the first tank includes a metering tank having a capacity of one batch of the second tank. In the case where the heat drying treatment using the second tank is a batch operation, the processing target of the next batch size can be collectively heated by the heat removal of the second tank by preheating the metering tank of the capacity of one batch. Therefore, the utilization efficiency of the exhaust heat can be improved. In addition, although the object to be processed is likely to be spoiled when the temperature of the object to be treated is high for a long period of time, it is possible to suppress the occurrence of such a problem by heating the object to be processed in one batch.

The exhaust gas in the second tank contains water vapor and various components. Therefore, it is preferable that the heat recovery unit includes a heat exchange unit that uses the heat of the exhaust gas of the second tank to preheat the warm water of the first tank. It is possible to suppress the occurrence of so-called corrosion and pore clogging in a piping system that preheats the first tank.

Preferably, the system has a stirring unit that rotates and agitates the vanes in the second tank, and the second tank includes an exhaust port that exhausts the exhaust gas and the opening in the second tank faces the rotation direction of the vane. Since the opening of the exhaust port faces the downstream side in the flow direction generated in the second groove by the rotation of the agitation unit, solid matter, powder, dust, and the like which are generated by the drying of the object to be processed are hard to enter the exhaust port. The amount of solid matter such as powder contained in the exhaust gas recovered from the exhaust port can be reduced, and the design of the heat recovery unit becomes easy.

Preferably, the system further has an injection unit that intermittently blows the vapor to the vicinity of the opening in the second groove of the exhaust port. The heating of the second tank is typically the use of steam, particularly a saturated or near saturated or supersaturated state of the vapor. In this case, it is preferable that the system further includes a vapor supply unit that supplies the steam for heating and heats the second tank from the outside with steam, and the injection unit blows a part of the steam for heating. By venting the vapor toward the exhaust The opening is released in the vicinity of the opening, so that the humidity in the vicinity of the opening is temporarily increased, and it is possible to suppress the powder (dust) in the drying or the drying from being discharged together with the gas.

An example of the agitation unit includes: a rotation axis that passes through a center of the second groove; a plurality of first arms that protrude horizontally from the rotation axis; and a second arm that is detachably attached to the plurality of first arms; An agitating blade attached to the distal end of the second arm and following the inner wall of the second groove. The second arm may also include two jibs that are triangularly mounted with the agitating blades. The second arm and the agitating blade may be slowly cut by the object to be agitated, and may be deformed occasionally due to the state of the object to be processed. In that case, the second arm and the stirring blade can be easily exchanged.

Preferably, the rotation axis of the center of the second groove is supported by the lower side of the second groove so as to be vertically slidable, and the drive unit is suspended by the upper side of the second groove. Rotate the drive. By supporting the rotating shaft in a state in which the lower side of the second groove can be slid, even when the load applied to the rotating shaft is large, the rotating shaft can be stably rotated, and the thermal expansion of the second groove can be performed.

The system may further include a sorting unit that sorts the foreign matter containing the packaging material from the waste and supplies the fluidized object to be treated in the first tank. It can be processed by one system from the classification of wastes such as foods to drying treatment.

One of the other aspects of the present invention is a method of producing a dried product using a system for drying a fluidity-treated object. The system system includes a first tank that temporarily collects and preheats the object to be processed, and a second tank that collects the object to be heated by the first tank and heats and dries it. And a heat recovery unit that recovers heat of the exhaust gas containing water vapor discharged from the second tank, the method comprising the following steps.

1. The object to be processed is dried by the second tank, and the first tank is heated by the heat of exhaustion recovered by the heat recovery unit.

2. The dried product produced by heating and drying the object to be treated in the second tank is discharged from the second tank.

3. The preheated object to be processed is moved from the first tank to the second tank.

1‧‧‧Waste Disposal System (Processing System)

2‧‧‧ Raw materials (waste)

3‧‧‧ Foreign objects

4‧‧‧Classification (object to be treated)

5‧‧‧Dry

6‧‧‧Water vapor (exhaust)

9‧‧‧ warm water

11‧‧‧clockwise

51‧‧‧Vapor (raw vapour)

52‧‧‧Drainage

100‧‧‧Classification devices (classification unit, separation device, screening device, destruction) Separation device)

110‧‧‧ Input

120‧‧‧Rotating blades

130‧‧‧Export

150‧‧‧Porous components (filters, sieves)

180‧‧‧Spiral conveyor (screw feeder)

200‧‧‧Pumping device (quantitative pressure feeding unit, peristaltic pump)

300‧‧‧ storage unit

311‧‧‧ storage tank

312‧‧‧Agitator

313‧‧‧Motor

330‧‧‧ valve

340‧‧‧Supply piping

350‧‧‧Measuring unit

361‧‧‧1st trough (metering tank)

362‧‧‧Agitator

363‧‧‧Motor

364‧‧‧ outer wall (shell, perimeter wall)

365‧‧‧ warm water path (cover)

370‧‧‧Water supply device

380‧‧‧Supply valve

381‧‧‧Supply tube

400‧‧‧Drying unit (drying unit)

410‧‧‧Heart (shell, slot 2)

411‧‧‧Internal

412‧‧‧Wall wall (side wall)

413‧‧‧Upper board (upper wall)

414‧‧‧ Lower plate (bottom plate, bottom wall)

453, 454‧‧‧Vapor path

415, 416‧‧‧ outer wall (peripheral)

420‧‧‧ supply port

421,461‧‧‧Nozzles (tubes)

430‧‧‧Stirring unit

431‧‧‧ Blades (blade units)

432‧‧‧ Impeller shaft

432a‧‧‧Bottom

434‧‧‧1st arm

435‧‧‧2nd arm

435a‧‧‧Connecting Department

435b‧‧‧ jib

436‧‧‧Scraper (upper blade)

437‧‧‧protrusion (claw)

439‧‧‧Support rod

440‧‧‧Vapor injection unit

442‧‧‧ solenoid valve

451‧‧‧Vapor supply tube

452‧‧‧Drain return pipe

455-458‧‧‧Nozzle

460‧‧ vent

462‧‧‧ openings

470‧‧‧Export

480‧‧‧ drive unit

481‧‧‧ Gear unit

482‧‧‧Motor

485‧‧‧ bearing unit

486‧‧‧ oil seal

490‧‧‧ foot column

500‧‧‧heat recovery unit

501‧‧‧Draining tube

510‧‧‧ dust collector

520‧‧‧Heat exchange unit

530‧‧‧Warm water supply pipe

531‧‧‧Return tube

540‧‧ ‧ warm water tank

550‧‧‧ pump

600‧‧‧Transport unit

610‧‧‧Spiral feeder (screw conveyor)

710‧‧‧ foreign object container

720‧‧ Air source

721‧‧‧Compressed air (press air)

730‧‧‧Water source

750‧‧‧cooler

760‧‧‧purification device

770‧‧‧ Deodorizer

780‧‧‧Boiler and steam supply

800‧‧‧Control device (control unit)

810‧‧‧ Function (unit)

830‧‧‧ Function (unit)

840‧‧‧ Function (unit)

910‧‧‧Classification

930‧‧‧Preheat treatment

940‧‧‧Drying

Fig. 1 is a block diagram showing a schematic configuration of a waste disposal system.

Fig. 2 is a longitudinal sectional view showing the configuration of a shaft of the drying device.

Fig. 3 is a cross-sectional view showing the structure of a shaft of the drying device.

4 is a flow chart showing an outline of a method of manufacturing a dried product using a waste treatment system.

Fig. 1 is a block diagram showing a schematic configuration of a waste disposal system. The waste disposal system (treatment system) 1 divides raw materials (waste) 2 such as food waste, such as packaged household waste, kitchen waste discharged from a food factory, into reusable compost, feed, etc. A classification system 4, a resin bag made of a resin that is difficult to reuse, and a foreign matter 3 such as a plastic tray, and a system in which the classified product 4 is output as the regenerated product 5. Reusable substances such as food residues are initially pulverized, watered, etc., and classified (separated) into a fluid state (classification) After the object or the fluid) 4, it is dried and converted into a reconstituted product (dry matter) 5 of compost, feed, or the like.

An example of the raw material 2 is a relatively homogeneous food residue such as bean curd residue, which is classified and dried to be used as a good and homogeneous fertilizer or feed. The garbage of the household, the garbage of the restaurant, the garbage of the hotel, and the like can also be reused as a fertilizer by classifying the mixed food residue and other recyclable organic substances into foreign matter 3 and drying them.

The processing system 1 includes: a sorting device (classification unit, separation device, screening device, destruction separation device) 100 that collects raw materials (waste) 2, pulverizes and agitates and classifies foreign materials such as packaging materials that are difficult to reuse; a device (a quantitative pressure feed unit, a peristaltic pump) 200 that pressurizes a fluidity classification 4 discharged from the sorting device 100, a storage unit 300 that stores the classified product 4, and a drying device 400 that treats the classified object 4 as a processing target The material is dried; the metering unit 350 temporarily stores and preheats the classified product 4 in a dry (1 operation) drying condition of the drying device 400; the heat recovery unit 500 recovers the exhaust gas discharged from the drying device 400. Heat is used to preheat the metering unit 350; and a control device (control unit) 800 that controls the devices and units.

The control unit 800 includes: a function (unit) 810 that controls the sorting device 100; a function (unit) 830 that controls the metering unit 350; and a function (unit) 840 that controls the drying device 400. The control unit 800 may further include functions of detecting the temperature, pressure, and the like of the sorting device 100, the metering unit 350, and the drying device 400. A typical control unit 800 is a computer that includes hardware resources such as a CPU and a memory. The control method described below can be provided in the form of a program (program).

The dried product (reproduced product) 5 output from the drying device 400 is stored in a reservoir (not shown) and shipped as a product such as feed or fertilizer. When the oil component of the dried product 5 is large, it is processed by a cutter and a pulverizer and then shipped as a product.

The sorting device 100 separates the food waste 2 conveyed by a conveyor or the like into the foreign matter 3 and the classified object (processing object) 4. The sorting device 100 has a rotating blade 120 that agitates the food waste 2 that is fed from the input port 110, and separates the food waste 2 into the foreign matter 3 and the classified product 4 by the centrifugal force given by the rotating blade 120. The foreign matter 3 is discharged from the discharge port 130 to the foreign matter container 710. The classification 4 is further pulverized by the rotating blade 120, and is in a fluid state (slurry) by the water itself or if necessary, by injecting water. The classification 4 of the flow animal state is filtered by a porous member (filter, sieve) 150, and then sent to the pressure feed device 200 by a screw conveyor (screw feeder) 180.

The pressure feed device 200 presses the sorting material 4 to the storage tank 311 of the storage unit 300 using compressed air (press air) 721 obtained from a suitable air source 720.

The drying device 400 disposed downstream of the storage tank 311 is subjected to a drying process in a batch process. The storage tank 311 includes a function as a temporary storage area, and collects the classified object (processing object) 4 continuously processed by the sorting device 100, and intermittently supplies the classified object 4 to the drying device 400. The storage tank 311 is provided with a capacity of several times to several 10 parts of the amount of the classified product 4 to be processed once (one batch) of the drying device 400. The storage unit 300 includes a stirring device 312 for agitating the sorting 4 in the storage tank 311 and a motor 313 for driving the stirring device 312. In order to make the viscosity of the classification 4 stored in the storage tank 311 appropriate In the range, the storage unit 300 may also be provided with a system for heating the storage tank 311 by steam or electricity.

The metering unit 350 disposed between the storage tank 311 and the drying device 400 includes a first tank (metering tank) 361, a stirring device 362 of the sorting material 4 in the stirring tank, and a motor 363 that drives the stirring device 362. The metering tank 361 is connected to the storage tank 311 via a valve 330 and a supply pipe 340. The measuring tank 361 is a cylindrical or funnel-shaped tank made of stainless steel, and has a capacity to accumulate the amount (class of processing object) 4 of the drying device 400 in one batch.

The first groove 361 includes an outer wall (case, peripheral wall) 364 which is a double-layer structure outer cover structure. The casing 364 includes a warm water path 365 in which the warm water 9 circulates from the upper portion to the lower portion, and the classified product 4 temporarily stored in the measuring tank 361 is heated by the warm water 9. In the metering tank 361, it is preferable that the class 4 is maintained at a temperature of 50 to 80 ° C, more preferably 60 to 75 ° C, and the crucible has a moderate fluidity. The measuring unit 350 further includes a water supply device 370 that supplies water from an appropriate water source 730 such as tap water to adjust the fluidity (viscosity) of the classified product 4 in the measuring tank 361.

The drying device 400 collects a predetermined amount of the classified product 4 supplied from the measuring tank 361 of the measuring unit 350 as a processing target, and performs drying processing. The drying device 400 has a cylindrical body (outer casing, second groove) 410 and a stirring unit 430 of the classification 4 of the stirring shaft 410. The furnace body 410 has a supply port 420 that receives the sorted product 4 from the metering unit 350 via the supply pipe 381, and is connected to the supply pipe 381 including the supply valve 380 and the metering groove 361.

The stirring unit 430 installed inside the furnace body 410 includes an impeller shaft 432 disposed in the vertical direction along the center of the furnace body 410, a driving unit 480 disposed at an upper portion of the furnace body 410, and a furnace body 410 disposed therein. Blade (blade unit) 431. The blade unit (stirring blade) 431 is rotated by the drive unit 480 via the impeller shaft 432 to agitate the sorter 4 in the shaft 410.

The peripheral wall 412 and the bottom plate 414 of the shaft 410 include a two-layer structure (cover construction). The peripheral wall 412 and the bottom plate 414 are heated by passing the steam 51 supplied from the steam supply source 780 of the boiler or the like through the outer cover structure. The vapor 51 may be superheated steam or saturated vapor. The vapor temperature is preferably 100 ° C or higher, preferably in the range of 110 to 160 ° C, and more preferably in the range of 120 to 150 ° C. The blade unit 431 is agitated so that the classification 4 can collide with the peripheral wall 412, and the classification 4 is collided with the peripheral wall 412 heated by the steam 51 while being actively heated and dried. The furnace body 410 and the boiler 780 are connected by a steam supply pipe 451 and a drain return pipe 452. The vapor 51 supplied from the boiler 780 passes through the outer casing structure that is isolated from the inside of the furnace body 410, and is not contaminated.

The furnace body 410 has a discharge port 470 at a lower portion thereof for discharging the dry matter 5. A transfer unit 600 for transporting the workpiece after storing the dried product 5 or the like is connected to the discharge port 470. In this example, the transport unit 600 includes a screw conveyor 610.

The furnace body 410 has an exhaust port 460 for discharging the water vapor 6 generated by drying the classified product 4 in the furnace body at the upper portion thereof. The exhaust port 460 is connected to the discharge pipe 501, and the exhaust gas 6 generated in the furnace body 410 is supplied to the heat recovery unit 500. The main component of the exhaust gas 6 is water vapor generated when the classification 4 of the object to be processed is dried, but also contains volatile matter contained in the classification 4 . the following, There is a case where the exhaust gas 6 is referred to as water vapor. The furnace body 410 has a vapor injection unit 440 at its upper portion for blowing the steam (raw steam) 51 supplied from the boiler 780 to the opening in the furnace body 410 of the exhaust port 460 and/or the exhaust port 460.

The heat recovery unit 500 includes a heat exchange unit 520 that generates warm water 9 using heat of exhaust gas (water vapor) 6 recovered from the drying device 400, and a dust collector 510 that is disposed upstream of the heat exchange unit 520; the cooler 750 It cools the steam or hot water which is heat-recovered by the heat exchange unit 520 and discharges it. The drain discharged from the heat recovery unit 500 is discharged to the outside through the purification device 760, and the gas component (exhaust gas) after the heat recovery is discharged to the outside through the deodorizer 770.

The warm water 9 generated by the heat exchange unit 520 is sent to the metering unit 350 by the warm water supply pipe 530 to heat the metering tank 361. In the metering tank 361, the peripheral wall 364 has a two-layer structure (cover structure), and the metering tank 361 is heated (warmed) by circulating the warm water 9 in the warm water path (cover) 365 of the peripheral wall 364. The drain heated by the metering tank 361 is temporarily accumulated in the warm water tank 540 via the return pipe 531, and supplied to the heat exchange unit 520 by the pump 550.

2 shows the configuration of the shaft 410 of the drying device (drying unit) 400 in a longitudinal (vertical) cross-sectional view. 3 is a cross-sectional view in the lateral direction (horizontal direction) showing the structure of the shaft 410. The furnace body (second groove) 410 includes a leg 490 that supports the shaft 410 of the foundation or other structure, a cylindrical peripheral wall (side wall) 412 that extends vertically, and an upper plate (upper wall) 413 that seals the upper side. And a bottom plate (bottom plate, bottom wall) 414 which forms a bottom and is a substantially sealed groove.

Outside the peripheral wall 412 and the lower plate (floor) 414 of the shaft 410 On the side, outer walls (peripherals) 415 and 416 which form vapor paths 453 and 454 of the vapor cycle are respectively provided. The nozzles 455 and 457 for supplying the steam 51 from the boiler 780 and the nozzles 456 and 458 for discharging the drain 52 are connected to the respective vapor paths 453 and 454. The sorted product 4 supplied to the inside 411 of the shaft 410 is agitated by the stirring unit 430 attached to the shaft 410 and heated by the peripheral wall 412 and the bottom wall 414 heated by the steam 51 to be dried.

The agitation unit 430 includes an impeller shaft 432 disposed along a central axis of the furnace body 410, a drive unit 480 that drives the impeller shaft 432, and a plurality of blade units 431 that are at the furnace body 410 by the impeller shaft 432. The inner portion 411 is driven to rotate. The driving unit 480 is mounted on the upper plate 413 of the shaft 410 and includes a motor 482, a gear unit 481 that transmits power of the motor 482 to the impeller shaft 432, and a bearing unit 485 that supports the impeller shaft 432. The shaft 410 can be rotated. The load (thrust) in the vertical direction of the impeller shaft 432 is supported by the gear unit 481. That is, the impeller shaft 432 is rotated in a state of being suspended from above by the gear unit 481. The impeller shaft 432 may be formed such that the load is received from above the shaft 410 by a method such as a thrust bearing, and the impeller shaft 432 is lifted by thermal expansion of the shaft 410.

The impeller shaft 432 penetrates the upper plate 413 via the oil seal 486 and extends substantially vertically up and down the inner portion 411 of the furnace body 410. The lower end 432a of the impeller shaft 432 reaches the bottom plate 414 of the shaft 410, but does not contact the bottom plate 414. A support rod 439 extending upward along the central axis of the shaft 410 is mounted on the bottom plate 414. The support rod 439 penetrates the lower end 432a of the hollow impeller shaft 432 and is inserted into the inside of the impeller shaft 432. The impeller shaft 432 is supported by the impeller shaft 432 from the inside of the impeller shaft 432 so that the support rod 439 can slide up and down.

Therefore, the impeller shaft 432 is supported such that the upper end portion of the impeller shaft 485 does not move in the horizontal direction and the lower end is not moved in the horizontal direction by the support rod 439, and rotates in the horizontal direction along the central axis of the shaft 410. The lower end of the impeller shaft 432 slides up and down the support rod 439. Therefore, the impeller shaft 432 is rotated in a state in which the upper end is suspended by the drive unit 480. When the furnace body 410 is heated by steam to cause thermal expansion in the up and down direction, the impeller shaft 432 is pulled upward by the drive unit 480, but the lower end of the impeller shaft 432 is slid by the support rod 439 without coming from the support rod 439. Fall off. Even if the shaft 410 is thermally expanded, the upper and lower ends of the impeller shaft 432 are supported at the position of the central axis of the shaft 410, and are stably rotated by the driving unit 480.

Therefore, even if the load of the classified product 4 in the dry state is applied to the blade unit 431, the blade unit 431 does not vibrate left and right, and the blade unit 431 can be rotated in a state close to the side wall 412. Therefore, the blade unit 431 can scrape (scrape) the sorted material 4 that is in contact with the drying of the side wall 412, and can suppress the thermal conductivity and the drying efficiency of the side wall 412 being covered by the classified object 4. . Therefore, the sorter 4 can be efficiently heated across the side wall 412.

In the impeller shaft 432, a plurality of blade units 431 are spirally mounted in the vertical direction of the impeller shaft 432, and the blade unit 431 also rotates as the impeller shaft 432 rotates. In this example, it is rotated in the clockwise direction 11 as viewed from above, but may be designed to rotate in the counterclockwise direction. Each of the blade units 431 includes a first arm 434 that is attached to the impeller shaft 432 so as to extend in the radial direction (horizontal direction) from the impeller shaft 432 toward the peripheral wall 412. The second arm 435 extends in a plurality of branches at the distal end of the first arm 434. And a plate-shaped squeegee (upper blade) 436 attached to the front end of the second arm 435.

The squeegee 436 is an arc-shaped plate-like member whose outer edge follows the peripheral wall (side wall) 412 of the shaft 410, and is made of, for example, stainless steel. The squeegee 436 is attached to the impeller shaft 432 by the arms 434 and 435 so as to be higher than the front end with respect to the traveling direction (clockwise direction) 11. When the impeller shaft 432 rotates, the plurality of squeegees 436 attached to the impeller shaft 432 sweep away substantially the entire area except the upper portion of the peripheral wall 412 of the shaft 410, whereby the dry matter attached to the peripheral wall 412 can be sorted. 4 scraping (upper shaving). Each of the squeegees 436 is mounted, for example, at an angle of 10 to 15 degrees with respect to the horizontal direction, and the area swept by a squeegee 436 and the area swept by the upper and lower squeegees 436 are partially scraped. The angle and length of the plate 436.

A protrusion (claw) 437 that protrudes upward is attached above the rear end of the squeegee 436. For example, the protrusion 437 is a trapezoidal plate body having a high height in front of the rotation direction (traveling direction) 11, and the dry and block-shaped (packed) dry classification 4 can be effectively broken. Depending on the object to be processed by the system 1, there may be no protrusions 437, and not only the rear end of the squeegee 436, but also a plurality of protrusions may be provided in the middle or at the front end.

The second arm 435 of the support blade 436 includes a plurality of sub-arms 435b branched from the connection portion 435a connected to the first arm 434. The arm 435 in this example includes two sub-arms 435b branched in a Y-shape, and the sub-arms 435b support the squeegee 436 at a plurality of positions in front and rear. Therefore, the position and posture of the blade 436 can be stabilized, and the blade 436 can be brought close to the peripheral wall 412 and the sorting object 4 can be scraped off efficiently. The squeegee 436 may wear and damage due to contact with the sorter 4. Therefore, it is preferable to mount the second arm 435 so as to be attachable and detachable. For example, the squeegee 436 can be attached to the second arm 435 by bolts or nuts, and the bolt or nut can be set. On the upper surface of the squeegee 436, it may be provided below. Since the lower surface of the squeegee 436 has less chance of coming into contact with the sorter 4, it is easy to suppress the consumption of the bolt or the nut.

In this example, the second arm 435 is attached so that the first arm 434 can be attached or detached by a bolt or a nut, and the second arm 435 can be consumed and exchanged at the time of damage. The first arm 434 is attached to the impeller shaft 432 at a pitch of 120 degrees. The interval at which the first arm 434 is attached is not equal to 120 degrees. Further, the plurality of first arms 434 are spirally attached to the impeller shaft in such a manner that each of the plurality of squeegees 436 scrapes the sorting material 4 from the lower side and scrapes the sorting material 4 above the shaft 410. On 432.

The movement of the typical classification 4 in the shaft 410 is such that a plurality of squeegees 436 are heated along the inner side of the peripheral wall 412 to reach above the shaft 410, and descend toward the bottom wall 414 along the impeller shaft 432. When the sorter 4 falls down the impeller shaft 432, it is pulverized by the second arm 435 which collides with the branch. Therefore, in the inside of the furnace body 410, the classified object 4 is stirred and broken while being heated to become finer particles or powder. At that time, the moisture contained in the classified material 4 is discharged from the furnace body 410 as the water vapor 6.

The furnace body 410 includes a supply port 420 for receiving the classified product 4, and an exhaust port 460 for discharging a gas (exhaust) containing water vapor. The supply port 420 and the exhaust port 460 include nozzles (tube stages) 421 and 461 which are provided to penetrate the upper plate 413, respectively. The opening 462 of the exhaust pipe 461 facing the inside of the furnace body 410 is opened in the direction of rotation of the stirring unit 430, that is, in the clockwise direction 11. The exhaust pipe 461 may be bent inside the upper wall 413 of the furnace body 410 for controlling the direction of the opening 462 of the exhaust port 460, or may be provided on the inner side of the upper wall 413 to open the opening 462 in the clockwise direction 11. Structure.

In the interior 411 of the furnace body 410, the water vapor 6 is generated by the classification of the product 4, and the dried product 5 obtained by drying the classified product 4 is rolled up by the squeegee 436 to become dust. By making the opening 462 of the exhaust port 460 in the same direction as the traveling direction of the squeegee 436, it is possible to suppress the powdery dry matter 5 that has been smashed up along the upper portion of the furnace body 410 while being rotated together with the squeegee 436 into the exhaust gas. The port 460 allows a fluid (gas) whose main component is water vapor 6 to be discharged from the exhaust port 460.

Further, a steam injection unit 440 that blows the steam 51 toward the inside 411 of the furnace body 410 is provided at the exhaust port 460 of the furnace body 410. In this example, a portion of the exhaust pipe 461 is provided with a nozzle 441 for vapor injection, and the steam 51 is blown toward the inside 411 of the furnace body 410 inside the exhaust pipe 461. By periodically blowing the vapor into the inside of the exhaust pipe 461, the dried product 5 accumulated in the exhaust pipe 461 can be peeled off and returned to the inside 411 of the furnace body 410. Therefore, it is possible to suppress the clogging of the exhaust pipe 461 by the dry matter 5 and the fact that the dried product 5 is transported to the heat recovery unit 500 via the vapor discharge pipe 501. Further, when the drying of the dried product 5 is carried out, the steam 51 is used instead of the air, whereby the dry product 5 can be prevented from being rolled up in a dry state and coming to the side of the vapor discharge pipe 501. Therefore, it is preferable that the injected vapor 51 is as saturated or supersaturated vapor (raw steam) as low as possible.

Immediately above the bottom wall 414 of the peripheral wall 412 of the shaft 410, a discharge port 470 for discharging the dried product 5 is provided. An example of the discharge port 470 is a nozzle (tube stage), and the inside of the furnace body 410 may be inclined downward, and the accumulation of the classified product 4 and the dried product 5 during drying may be suppressed. A screw feeder (screw conveyor) 610 is connected to the discharge port 470. In the drying, the discharge port 470 can be closed in advance by a suitable opening and closing mechanism such as a gate or a valve, and the screw feed can also be performed. The machine 610 rotates in the opposite direction to the discharge direction.

Figure 4 shows, in a flow chart, the process by which the processing system 1 produces the dried product 5. In step 901, the sorting process 910 using the sorting device 100, the drying process 940 using the drying device 400, and the process 930 of preheating the sorter 4 using the metering unit 350 are performed in parallel. In the case where the waste 2 which is the object of the classification process 910 does not exist, the classification process 910 is not performed. Similarly, in the case where the classification 4 which is the object of the drying process 940 does not exist, the drying process 940 and the pre-heat treatment 930 are not performed.

In the sorting process 910, the function 810 of the control sorting device of the control unit 800 drives the rotating blade 120. When the fluidity classification 4 is stored in the sorting device 100, the screw feeder 180 sends the sorting device 4 to the presser device. 200, the pressure feeding device 200 sends the classification 4 to the storage tank 311 for temporary storage.

In the drying process 940, the function 840 of the control drying device of the control unit 800 is a drive unit 480 that drives the agitation unit 430 of the drying device 400 to rotate a plurality of blade units 431 in the furnace body 410 heated by steam. Thereby, the fluidity (slurry) classified product 4 that has been taken into the furnace body 410 is dried by heating and pulverized to form a dried product 5. In the drying process 940, the control unit 800 periodically operates the solenoid valve 442 of the vapor injection unit 440 disposed at the exhaust port 460 of the furnace body 410, and injects the steam 51 toward the exhaust port 460 and its vicinity to suppress the exhaust port 460. The object to be dried 5 is clogged and the dried product 5 is carried-over to the side of the heat recovery unit 500.

In the preheat treatment 930, the function 830 of the control metering unit of the control unit 800 is agitating the sorting material 4 that is taken into the metering tank 361 using the stirring device 362 of the metering unit 350. The metering tank 361 is supplied from the heat recovery unit 500 The warm water 9 is heated to preheat the classified product 4 which is taken into the batch portion of the measuring tank 361. In the heat recovery unit 500, warm water 9 is generated using heat (exhaust heat) of the water vapor 6 discharged from the furnace body 410 of the drying device 400. Since the preheating of the sorting material 4 in the measuring tank 361 is the exhaust heat using the drying device 400, the running cost can be reduced. The processing cost and time of the drying device 400 can be reduced by supplying the preheated classification 4 to the drying device 400. Therefore, the dried product 5 can be produced at low cost.

In the measuring tank 361, the classified product 4 of the primary drying treatment amount (one batch portion) of the drying device 400 is preheated. Therefore, since the classification 4 of the next drying process is preheated in the metering tank 361, the outlet temperature of the metering tank 361 of the class 4 can be set high. Therefore, in the case where there is not much water vapor 6 discharged from the drying device 400, the classification 4 can be efficiently preheated, and the fluidity required for transportation can be ensured. Although the classification 4 may have a possibility of fermentation and spoilage of the classified product 4 when it is preheated for a long period of time, in the system 1, the classification 4 is limited to the amount of one batch by using the measuring tank 361 before the drying treatment. Preheating can prevent such problems from occurring.

Moreover, by preheating the sorted product 4 in the measuring tank 361, the fluidity of the sorting material 4 can be improved, and the sorting material 4 can be easily conveyed from the measuring tank 361 toward the furnace body 410. Therefore, the fluidity classification 4 can be supplied from the measuring tank 361 to the furnace body 410 by a simple piping or conveyor.

In step 902, when the drying process in the drying device 400 is completed, the screw feeder 610 that starts the conveying unit 600 in step 903 discharges the dry matter 5 from the furnace body 410. In step 904, the supply valve 380 is operated, and the classified product 4 preheated in the measuring tank 361 is taken into the furnace body 410 as a processing target for the next drying process. In step 905, the stirring unit 430 is driven to start drying again. deal with. When the sorting material 4 is discharged from the metering tank 361, in step 906, the valve 330 is operated to collect the next dried processed sorting material 4 from the storage tank 311 into the measuring tank 361, and the preheating is started.

Further, the present invention is described by taking the processing system 1 including the sorting device 100, the pressurizing device 200, the drying device 400, and the like as an example, but the processing system 1 may also be a sorted product 4 that has been classified in other processing systems. The storage tank 311 is preheated by the metering unit 350, and the drying apparatus 400 is used to generate a system of the dried material 5. Further, the treatment system 1 may include a degreasing device or the like in addition to the above-described devices depending on the material (regenerant, dry matter) 5 regenerated by the drying device 400 and its use.

1‧‧‧Waste Disposal System (Processing System)

2‧‧‧ Raw materials (waste)

3‧‧‧ Foreign objects

4‧‧‧Classification (object to be treated)

5‧‧‧Dry

6‧‧‧Water vapor (exhaust)

9‧‧‧ warm water

51‧‧‧Vapor (raw vapour)

52‧‧‧Drainage

100‧‧‧Classification devices (classification unit, separation device, screening device, destruction separation device)

110‧‧‧ Input

120‧‧‧Rotating blades

130‧‧‧Export

150‧‧‧Porous components (filters, sieves)

180‧‧‧Spiral conveyor (screw feeder)

200‧‧‧Pumping device (quantitative pressure feeding unit, peristaltic pump)

300‧‧‧ storage unit

311‧‧‧ storage tank

312‧‧‧Agitator

313‧‧‧Motor

330‧‧‧ valve

340‧‧‧Supply piping

350‧‧‧Measuring unit

361‧‧‧1st trough (metering tank)

362‧‧‧Agitator

363‧‧‧Motor

364‧‧‧ outer wall (shell, perimeter wall)

365‧‧‧ warm water path (cover)

370‧‧‧Water supply device

380‧‧‧Supply valve

381‧‧‧Supply tube

400‧‧‧Drying unit (drying unit)

410‧‧‧Heart (shell, slot 2)

412‧‧‧Wall wall (side wall)

414‧‧‧ Lower plate (bottom plate, bottom wall)

420‧‧‧ supply port

430‧‧‧Stirring unit

431‧‧‧ Blades (blade units)

432‧‧‧ Impeller shaft

440‧‧‧Vapor injection unit

442‧‧‧ solenoid valve

451‧‧‧Vapor supply tube

452‧‧‧Drain return pipe

460‧‧ vent

470‧‧‧Export

480‧‧‧ drive unit

500‧‧‧heat recovery unit

501‧‧‧Draining tube

510‧‧‧ dust collector

520‧‧‧Heat exchange unit

530‧‧‧Warm water supply pipe

531‧‧‧Return tube

540‧‧ ‧ warm water tank

550‧‧‧ pump

600‧‧‧Transport unit

610‧‧‧Spiral feeder (screw conveyor)

710‧‧‧ foreign object container

720‧‧ Air source

721‧‧‧Compressed air (press air)

730‧‧‧Water source

750‧‧‧cooler

760‧‧‧purification device

770‧‧‧ Deodorizer

780‧‧‧Boiler and steam supply

800‧‧‧Control device (control unit)

810‧‧‧ Function (unit)

830‧‧‧ Function (unit)

840‧‧‧ Function (unit)

Claims (10)

A system includes: a first tank that temporarily collects and preheats a fluidity-treated object; and a second tank that collects a treatment object preheated by the first tank and heats and dries And a heat recovery unit that heats the first tank by using heat of the exhaust gas discharged from the second tank. The system of claim 1, wherein the first tank includes a tank having a capacity of one batch of the second tank. The system of claim 1 or 2, wherein the exhaust gas of the second tank contains water vapor, and the heat recovery unit includes a heat exchange unit that preheats the temperature of the first tank by heat generation of the exhaust gas of the second tank water. The system according to any one of claims 1 to 3, further comprising: a stirring unit that rotates and rotates the vane in the second tank, wherein the second tank includes an exhaust port that exhausts the exhaust gas of the second tank The opening in the second groove is a direction of rotation toward the blade. The system of claim 4, further comprising an injection unit that interrupts the vapor The air is blown to the vicinity of the opening in the second groove of the exhaust port. A system according to claim 5, further comprising a vapor supply unit that supplies the steam for heating and heats the second tank from the outside by steam, and the injection unit blows a part of the steam for heating. The system according to any one of claims 4 to 6, wherein the agitating unit comprises: a rotating shaft passing through a center of the second groove; a plurality of first arms protruding from a horizontal direction of the rotating axis; An arm detachably attached to each of the plurality of first arms; and an agitating blade attached to an end of the second arm and extending along an inner wall of the second groove, wherein the second arm includes The agitating blades are two jibs that are mounted in a triangular manner. The system according to any one of claims 4 to 6, wherein the agitating unit has a rotating shaft passing through a center of the second groove, and a driving unit that rotates the rotating shaft, the rotating shaft being capable of The lower side of the two grooves is supported in a state of being slid up and down, and is rotated in a state of being suspended from above the second groove. The system of any one of claims 1 to 8, further comprising a sorting unit that classifies the foreign matter containing the packaging material from the waste and processes the fluidity as described above The object is supplied to the first tank. A method for producing a dried product using a fluidized object drying system, the system comprising: a first tank for temporarily collecting and preheating the object to be processed; and a second tank for collecting The object to be processed which is preheated in the first tank is subjected to heat drying treatment, and the heat recovery unit recovers heat of the exhaust gas containing water vapor discharged from the second tank, the method comprising: using the second tank pair The object to be processed is dried, and the first tank is heated by the heat of exhaustion recovered by the heat recovery unit; and the dried product produced by heating and drying the object to be treated in the second tank is from the second The tank is discharged; and the object to be treated which is preheated is moved from the first tank to the second tank.