KR100409230B1 - Device for drying and fermenting garbage speedily - Google Patents

Abstract

The present invention relates to an ultrafast flow drying and fermentation apparatus for food waste, and aims to enable a fast and efficient drying and fermentation of pretreated food waste.

The apparatus of the present invention includes a hot air dryer (330) connected to a pretreatment device (100) for inputting, sorting, crushing, compressing, dehydrating and crushing the collected food waste to hot-air-dry and discharge the pretreated food waste; A high speed fermenter 450 for fermenting and discharging dry food waste; A gravity separator 370 which collects the high temperature wet steam generated from the hot air dryer to discharge the solid material together with the food waste discharged from the hot air dryer and separate the primary purified wet steam separately; A waste heat recovery unit 380 for preheating blowing air by heat-exchanging the air blown by the wet steam discharged from the gravity separator and the hot air dryer; In addition, a wet oxidation deodorization apparatus 390 for discharging the wet steam, which has undergone the waste heat recovery machine, is discharged by secondary fine dust removal and deodorization treatment. A primary fermenter 310 may be further installed between the pretreatment device 100 and the hot air dryer 330 to first ferment food waste.

Description

Food waste ultra-fast flow drying and fermentation equipment {DEVICE FOR DRYING AND FERMENTING GARBAGE SPEEDILY}

The present invention relates to an ultrafast flow drying and fermentation apparatus for food waste, and is particularly connected to a pretreatment apparatus for inputting, sorting, crushing, compressing, dehydrating and crushing the collected food waste to quickly and efficiently dry and ferment the pretreated food waste. The present invention relates to an ultrafast flow drying and fermentation system for food waste that can be discharged by purifying contaminants generated in the process as well as feed or compost.

In general households and restaurants, a large amount of food waste, which is an organic waste, is emitted. Since these food wastes have a water content of about 80%, they easily rot and smell bad. In addition, food wastes are bulky, which significantly reduces the years of use of landfills, and when landfills generate large amounts of leachate, they cause water pollution such as groundwater contamination. In addition, when the food waste is incinerated due to high water content, a large amount of fuel is consumed, resulting in economical inefficiency, and a large amount of pollutants such as dioxins, which are known to have a fatal effect on the human body due to difficult combustion, are emitted.

In view of the above problems, various methods and apparatuses have been proposed to effectively treat food waste, which is an organic waste, without landfill, and to recycle the treated food waste for other uses such as feed or compost. Most of the conventionally used food waste treatment devices are installed in a place where a large amount of food waste or food waste collected by a dedicated collection vehicle is disposed in a large batch form for collecting and treating food waste generated therein. .

However, in such a batch type food waste processing apparatus, it takes a lot of time to process food waste. In addition, there is a limit to the allowable volume for processing food waste, it is not possible to operate the device flexibly in accordance with the amount of food waste generated. In addition, the fuel consumption is large due to the low thermal efficiency of the apparatus. Furthermore, since deodorization efficiency is removed by applying pyrolysis method, that is, condensation of water vapor to remove odors, the deodorization efficiency is reduced and the pollutants contained in water vapor can be purified. There is no problem.

An object of the present invention is to enable food waste to be dried and fermented quickly and efficiently.

Another object of the present invention is to reduce the consumption of fuel required for drying food waste.

Still another object of the present invention is to ferment and dry food wastes so that they can be fed to a good feed or compost.

Still another object of the present invention is to purify and deodorize the wet steam generated during food waste drying and fermentation so as to be discharged in a harmless state.

1 is a block diagram showing a pretreatment apparatus for pretreatment before food waste is put into the apparatus according to the present invention.

2 is a block diagram showing an apparatus according to the present invention for drying and fermenting food waste pretreated by the pretreatment apparatus of FIG.

3 is a longitudinal sectional view showing a dehydrator constituting the pretreatment apparatus of FIG. 1.

Figure 4 is a longitudinal sectional view showing partly the inside of the primary fermenter constituting the device according to the present invention.

Figure 5a is a side view of a part of the hot air dryer constituting the device according to the present invention.

FIG. 5B is a cross-sectional view taken along the line VV of FIG. 5A.

6 is a cross-sectional view showing an operating state of the gravity separator constituting the apparatus according to the present invention.

Figure 7a is a front view showing the connection state of the hot air dryer and gravity separator constituting the device according to the present invention.

FIG. 7B is a left side view of FIG. 7A.

7C is a top view of FIG. 7B.

8 is a cross-sectional view showing a waste heat recovery unit constituting the apparatus according to the present invention.

Figure 9 is a front view showing a part through the inside of the wet oxidation deodorizing device constituting the device according to the present invention.

Fig. 10A is a front view showing the high speed fermenter constituting the device according to the present invention.

FIG. 10B is a left side view of FIG. 10A, showing a partial perspective view.

<Explanation of symbols for the main parts of the drawings>

100: pretreatment device, 310: primary fermenter,

330: hot air dryer, 331: drying furnace,

341: impeller, 345: hot air supply,

347: hot stove, 355: fixed amount discharge device,

370: gravitational separator, 371: dust collector,

374: separation pipe, 380: waste heat recovery machine,

381: heat exchange housing, 386: heat exchange pipe,

390: wet oxidation deodorizer, 391: inlet stack,

396: outlet stack, 400: nozzle,

410: sorting conveyor, 430: storage tank,

450: high speed fermenter

In order to achieve the above object, the food waste ultra-fast flow drying and fermentation apparatus according to the present invention is connected to the pre-treatment device for inputting, sorting, crushing, compressing, dehydrating and crushing the collected food waste and being supplied from the pretreatment device. A hot air dryer for quantitatively supplying waste and drying the hot air for discharge; A high speed fermenter for receiving and fermenting food waste which is transported after being dried by the hot air dryer; Collects the high temperature wet steam containing steam, dust and combustion gas generated from the hot air dryer to sort the solid matter contained in the wet steam by gravity, and discharges the selected solid material together with the food waste discharged from the hot air dryer. In addition, the primary purified wet steam and the gravity separator separately discharged; A waste heat recovery unit for preheating the blowing air to the hot air dryer by lowering the temperature of the wet steam by heat-exchanging the air blown by the wet steam discharged from the gravity separator with the hot air dryer; In addition, the wet steam passing through the waste heat recovery is characterized in that it comprises a wet oxidized deodorizing device for discharging secondary to fine dust removal and deodorization treatment.

The hot air dryer has a drying furnace for drying and discharging the food waste introduced by hot air, and a hot air supply device for supplying hot air to the drying furnace.

The food waste discharged from the hot air dryer may be quantitatively transferred by a fixed amount supply device, and a gravity separator may be connected to the fixed amount supply device so that the selected solid materials are introduced and transported together with the food waste.

The waste heat recovery unit includes a heat exchange housing through which wet steam supplied from a gravity separator flows, and heat exchange pipes installed in the heat exchange housing to heat exchange the blower air with the wet steam and supply the heat exchanged air to the hot air supply device.

The wet oxidation deodorization apparatus, an inlet stack, an outlet stack installed in parallel with the inlet stack, nozzles provided on the outlet stack, supply deodorant liquid stored in the inlet stack and the outlet stack to the nozzles. Has a pump to

The high speed fermenter has a housing for fast fermenting and discharging the introduced food waste, and a stirrer for stirring the food waste introduced into the housing. The heat source for matching the fermentation conditions for the high-speed fermenter is supplied by the heater with the oil filled in the jacket formed in the housing of the inner cylinder and the outer cylinder structure.

In addition, according to the present invention, it is preferable that a primary fermenter is further installed between the pretreatment device and the hot air dryer to store the food waste pretreated. The heat source to meet the fermentation conditions of the primary fermenter is supplied by wet steam discharged from the hot air dryer.

In addition, a storage tank for storing the food waste before fermentation between the hot air dryer and the high speed fermenter to supply to the high speed fermenter is further installed.

In addition, a sorting transport conveyor for sorting the foreign matter contained in the food waste to be dried and transported between the metered discharge device and the storage tank is further installed.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in FIG. 1, reference numeral 100 denotes a pretreatment apparatus for inputting, sorting, crushing, compressing, dehydrating and crushing the collected food waste, and as shown in FIG. 2, reference numeral 300 denotes the pretreatment apparatus 100. Connected is an apparatus of the present invention for drying and fermenting the pretreated food waste.

As shown in FIG. 1, the pretreatment apparatus 100 includes a hopper 120 for inputting the collected food waste and a sorter for sorting the food waste supplied from the hopper 120 into foreign matter and pure food waste. 140, a dehydrator 160 for compressing, crushing and dehydrating the selected food waste, and a crusher 180 for crushing the dehydrated food waste.

Apparatus 300 according to the present invention is for drying and fermenting the food waste pretreated through the pretreatment device 100, as shown in Figure 2, hot air food waste supplied through the pretreatment device 100 The hot air dryer 330 to dry, the high speed fermenter 450 for fermenting the dried food waste while passing through the hot air dryer 330, and steam, dust, and combustion gas generated from the hot air dryer 330 are mixed. Gravity selector 370 to collect the high temperature wet steam and the solid matter contained in the wet steam by gravity, and the air blown to the wet steam and hot air dryer 330 is first purified and discharged from the gravity selector 370 Waste heat recovery (380) for preheating the blowing air by lowering the temperature of the steam and lowering the temperature of the wet steam, and secondly removing the fine dust and the wet steam passed through the waste heat recovery (380) and It comprises a wet oxidation deodorizing device 390 to discharge by deodorization treatment.

As shown in FIG. 1, the hopper 120 of the pretreatment device 100 is of a suitable height and size so that food wastes collected or transported by the dedicated collection vehicle 110 can be easily introduced therein. Has The lower end of the hopper 120 is provided with a screw conveyor 122 is built in a pair of screws to discharge by a predetermined amount while crushing the food waste put into the hopper 120. The food waste conveyed by a predetermined amount by the screw conveyor 122 is transferred to the sorter 140 by a conveying conveyor 130 installed over the outlet of the screw conveyor 122 and the inlet of the sorter 140.

Although not shown in detail here, the sorter 140 is provided with a net body and a vibration generating unit, and is configured to sort foreign matters contained in the food waste by vibration caused by driving of the vibration generating unit. The separated foreign matter and food waste are discharged separately, and the foreign matter is further selected in the process of passing through the two-stage sorting conveyor 146 which is installed after the foreign matter outlet 142 and discharged to the outside of the pretreatment device 100 to be separately landfilled or incinerated later. The processed and pure food waste is discharged through the outlet 144 installed in the lower portion of the sorter 140. The food waste is introduced into the dehydrator 160 through a transfer conveyor 150 installed over the outlet 144 of the sorter 140 and the inlet of the dehydrator 160.

For reference, as shown in Figure 3, the dehydrator 160 is for compressing, crushing and dehydrating the selected food waste, food waste inlet 162 is formed on the upper end and the food waste outlet 163 on the other end And a pair of screws 166 and 166 installed at the bottom of the other end and having dehydration holes 164 formed at the other end, the pair of screws 166 and 166 installed at the housing 161 and driven by the motor 165, and the housing ( 161 has a solid-liquid separation housing 167 that wraps around the portion where the dehydration holes 164 are formed and has a dehydration liquid outlet 168 formed on a bottom surface thereof. For effective dehydration, the end of the housing 161 and the food waste outlet 163 are preferably connected by a guide portion 169 which is curtailed toward the food waste outlet 163. In addition, the food waste outlet 163 is preferably the opening degree is controlled by the opening and closing control plate 170, it is possible to constantly adjust the water content of the food waste by adjusting the opening of the control plate 170. Therefore, the food waste which is supplied into the housing 161 through the hopper 162 of the dehydrator 160 is conveyed while being compressed and crushed by a pair of screws 166.166, and the water contained in the food waste is Dehydration is introduced into the solid-liquid separation housing 167 through the dehydration holes 164. The dehydration liquid introduced into the solid-liquid separation housing 167 may be discharged through the dehydration liquid outlet 168. The dehydration liquid may be stored in a dehydration liquid storage tank 174 connected to the dehydration liquid outlet 168 through a conduit and processed separately, and a pump 172 may be installed in the conduit for the transfer of dehydration liquid. . Meanwhile, after the water is removed by the dehydrator 160, the solid food waste having a predetermined moisture content is discharged through the food waste outlet 163 and transferred to the grinder 180 by the transport conveyor 176.

The grinder 180 is for grinding the food waste to a particle size of approximately 4 to 5 mm for effective drying and fermentation, and although not shown in detail, a hammer mill for grinding the milled matter by a rotary milling blade. It is preferable to be employed in the form. In addition, it is preferable to have a shell in which discharge holes are formed in the lower part of the rotary grinding blade so that the food waste should be pulverized to a predetermined size or less to be discharged from the grinder 180. In addition, a storage tank 182 having a built-in stirrer for stirring the food wastes may be further installed in the lower part of the shell so that the crushed food wastes are not separated into solids, and the food waste contained in the storage tank 182 is stored in the storage tank 182. Discharged by a transport pump installed in the lower, the food waste discharged in this way is transported by a transport conveyor 190.

As described above, the food waste that has been subjected to the pretreatment is supplied to the hot air dryer 330 constituting the food waste ultra-fast flow drying and fermentation apparatus according to the present invention and dried.

According to the present invention, the food waste pretreated by the pretreatment apparatus 100 and then conveyed by the conveying conveyor 190 is stored and first fermented before being supplied to the hot air dryer 330 in the hot air dryer 330. In order to supply a fixed amount, a primary fermenter 310 may be installed between the grinder 180 and the hot air dryer 330 as shown in FIG. 2. In addition, between the primary fermenter 310 and the hot air dryer 330, it is preferable that a quantitative supply device 327 for quantitatively supplying the first fermented food waste to the hot air dryer 330.

The first fermenter 310 may be a fermentation method by the growth of bacteria, in which case fermentation bacteria (Bacillus, hina microorganisms, complex soil microorganisms, etc. as microorganisms) is also added when stirring the food waste By stirring by the shaft, the fermentation bacteria are mixed evenly with the food waste. Therefore, the food waste is fermented by the fermented bacteria, while an atmosphere in which the fermentation bacteria can be grown is also created, and the activity of pathogens and rot bacteria is suppressed, thereby increasing the value as a single feed or compost.

Specifically, as shown in Figure 4, the primary fermenter 310, the housing 311 for discharging the food waste to be put into primary fermentation, and through the inner center of the housing 311 motor ( It has a stirring screw shaft 324 rotated by the driving of 323 and an air supply blower 321 for supplying air to the fermentation bacteria introduced into the housing 311. The housing 311 has a shape in which a jacket 314 having a spiral flow path formed by the guide baffle 314a is formed between the inner cylinder 312 and the outer cylinder 313, and has a plurality of supports installed downward along the outer circumferential surface thereof. 315). A wet steam inlet 316 is installed at the lower side of the jacket 314 and a wet steam outlet 317 is installed at the upper side. The wet steam inlet 316 will be described later, but is installed to introduce high temperature wet steam discharged from the hot air dryer 330, and the high temperature wet steam flowing into the wet steam inlet 316 flows helically along the jacket 314. (311) The interior is heated evenly to suit the fermentation and homogenization conditions. In addition, the wet steam outlet 317 is installed to discharge the wet steam flowing in the spiral spiral inside the jacket 314, the wet steam outlet 317 is connected to the wet oxidation deodorizing device 390 through a pipe, as will be described later. In addition, the wet steam outlet 317 is connected to the exhaust pipe 318 for discharging the wet steam generated in the housing during the fermentation process. Therefore, both the wet steam generated through the jacket 314 and the wet steam generated in the housing 311 may be supplied to the wet oxidation deodorization apparatus 390 through the wet steam outlet 317 to be deodorized in a harmless state. In addition, the manhole 319 is installed on the upper portion of the housing 311 so as to inject food waste into the housing 311 and to inject fermentation bacteria into the housing 311 or to clean the interior of the housing 311. do. And the lower end of the housing 311 is reduced to be discharged while the primary fermented food waste is compressed, the food waste outlet 320 is formed in the center of the reduced portion. As shown in FIGS. 2 and 4, the fixed-quantity feeding device 327 is installed across the lower portion of the food waste discharge port 320 and the inlet of the hot air dryer 330, so that the first-fermented food waste is hot air dryer 330. Can be supplied in a fixed quantity. In addition, the air supply blower 321 is installed in the upper portion of the housing 311, the air supply blower pipe 322 is connected to the outlet of the air supply blower 321 to supply air evenly inside the housing 311 is connected to the housing ( 311) extending inward.

As shown in FIG. 4, a level gauge 325 may be further installed in the housing 311 of the primary fermenter 310. When the value of the level gauge 325 is lower than the set value, the transfer of food waste to the hot air dryer 330 is stopped. When the value of the level gauge 325 is higher than the set value, the process before the first fermentation is performed. It is preferred to be controlled to pause. In any case, it is preferable that the rotary grinding blade of the mill 180 of the pretreatment apparatus requires a high torque at the time of initial operation so that it can continue to rotate without stopping.

According to the present invention, the hot air dryer 330 is intended to dry and discharge the food waste supplied from the primary fermenter 310 by hot air at a moisture content of about 30 to 40%, which is good for fermentation. 7A to 7C, there is a drying furnace 331 for drying and discharging the food waste introduced into the hot air by hot air, and a hot air supply device 345 for supplying hot air to the drying furnace 331. .

The drying furnace 331 is installed through the housing 332, the housing 332, the shaft 340 is driven by a motor 339 and a plurality of screw arrangement along the shaft 340. It has an impeller 341.

The housing 332 is a heat insulating material 332c is installed between the inner cylinder 332a and the outer cylinder 332b is disposed in the transverse direction, the food waste inlet 333 and the hot air supply 334 is formed on one side of the housing 332a. In addition, a wet steam outlet 335 is formed at the upper side of the other side, and a discharge port 336 for discharging the dried food waste is formed at the lower side of the other side. The housing 332 is supported by a support 337 installed below it. The outer peripheral surface of the housing 332 is preferably provided with a plurality of cleaning openings 338 that can be opened and closed to clean the interior thereof.

The impellers 341 arranged in a screw shape along the shaft have an arm 342 radially coupled to the shaft 340, and a stirring blade 343 installed at the free end of the arm 342. Arms 342 are arranged with a screw trajectory by being installed at 90 ° intervals about axis 340. Coupling method of the arm 342 to the shaft 340 may be considered a coupling method, for example, a screwing method that can separate the arm 342 from the shaft 340. In this case, the female screw is formed in the shaft 340 and the male screw is formed at one end of the arm 342 so that the arm 342 can be easily coupled to the shaft 340 in a detachable state. In addition, a coupling scheme capable of adjusting the assembly angle of the arm 342 relative to the shaft 340 may also be considered. In addition, the stirring feathers 343, as shown by the dotted line in Figure 5b is preferably disposed at different angles to evenly stir the food waste. For example, four stirring feathers 343 may be arranged at 5 °, 8 °, 10 °, and 12 °. By disposing the impellers 341 as described above, the food waste is transported along the screw trajectory while hitting the stirring feather 343 of the impeller 341, thereby increasing the area of the food waste exposed to the hot air.

In the drying furnace 331, some of the impellers 341 arranged while forming the screw trajectory (food waste that starts to be introduced into the drying furnace 331 has more moisture than downstream food waste. Four impellers 341 (e.g., impellers 341 in a position proximate to the food waste inlet 333) and impellers 341 in the area indicated by the dotted line box B in FIG. By installing the food waste in the same diameter direction, the transport speed of food waste can be made slower than in other regions, and the food waste can be actively dried in the stagnant section because it takes longer to be exposed to the hot air of food waste.

The hot air supply device 345 constituting the hot air dryer 330 includes a burner 346, a hot air furnace 347 connecting the burner 346 and the hot air supply hole 334 of the drying furnace 331, and the It has an air supply blower 351 for blowing air to the hot stove 347. Burner 346 receives fuel from fuel storage tank 352 (see FIG. 2). In addition, the outside of the hot stove 347 is covered with a heat insulating material. In addition, a cylindrical shell 348 is installed inside the hot blast furnace 347 to protect the fire of the burner 346 by a predetermined length from the burner 346 so that the blowing air causes turbulence around the shell 348. The guiding screw guide 349 is preferably installed. In addition, a plurality of flame propagation holes 350 may be formed on the outer circumferential surface of the shell 348.

Accordingly, the air blown by the air supply blower 351 changes into turbulent flow while flowing between the shell 348 and the screw guide 349, and the blower air flows to the flame propagation holes 350 and the outlet of the shell 348. Mixing well with the fire of the burner 346 is propagated may be supplied into the drying furnace 331 through the hot air supply port 334. The food waste may be dried while the food waste is agitated by the impellers 341 rotating together with the rotation of the shaft 340 by the hot air.

On the other hand, the dried food waste is discharged and transported to the quantitative discharge device 355 is installed in the lower portion of the outlet 336, the high temperature containing harmful substances such as steam, dust and combustion gas generated in the process of drying the food waste The wet steam is discharged through the wet steam outlet 335, and if the wet steam is discharged to the atmosphere as it is, it causes air pollution and odor, so it needs to be purified and discharged. In the present invention, by supplying the wet steam to the gravity separator 370, the solid matter contained in the wet steam is primarily selected and supplied to the quantitative discharge device 355 for discharging the dried food waste, and the primary purified wet steam is a waste heat recovery machine ( 380 is supplied to the waste heat source by heat exchange with the air blown by the hot air supply device 345.

That is, as shown in FIGS. 6 to 7c, the gravity separator 370 has an inlet 372 at the upper end thereof so that the wet steam discharged from the drying furnace 331 is introduced into the wet steam outlet 335 of the drying furnace 331. And a dust collecting container 371 connected to the fixed quantity discharge device 355, the outlet 373 at the lower end thereof, to be supplied to the fixed quantity discharge device 355, which is separated by a large specific gravity from the wet steam, and falls into the fixed quantity discharge device 355. An inlet is placed inside the dust collecting container 371 and an outlet is placed outside the upper of the dust collecting container 371 from the top of the dust collecting container 371 to the upper end of the dust collecting container 371 so as to discharge only the wet steam from which solid materials have been removed. It has a separation pipe 374 installed through. The outlet of the separation pipe 374 is connected to the waste heat recovery 380 to be described later in the pipe, it is preferable that the exhaust blower 376 is further installed in the pipe connecting the separation pipe 374 and the waste heat recovery 380. In addition, the exhaust blower 376 not only blows wet steam into the waste heat recovery 380 but also blows wet steam toward the primary fermenter 310. In addition, inside the separation pipe 374 (specifically, inside the portion placed inside the dust collecting container 371), dust of relatively large particles contained in the wet steam is outside the dust collecting container 371 through the separating pipe 374. It is preferable that filtering means 375, such as a strainer or a screen filter, is blocked to prevent the discharge of water.

As described above, the high-temperature wet steam subjected to the primary purification while passing through the gravity separator 370 is supplied to the waste heat recovery 380 by the exhaust blower 376.

As shown in FIG. 8, the waste heat recovery unit 380 is formed on one side of the outer circumference and is formed on the other side of the waste heat inlet 382, which is formed on the other side of the outer circumference, and is connected to the wet oxidation deodorizing device 390. 383, a heat inlet housing having an air inlet 384 installed at an end of the waste heat outlet 383 and a blown air outlet 385 formed at an end of the waste heat inlet 382 and connected to a hot air supply device 345. 381 and a plurality of heat exchange pipes 386 installed over the air inlet 384 and the blowing air outlet 385. In addition, the air is blown from the air inlet 384 to the blown air outlet 385 through the heat exchange pipes 386 by the air supply blower 351 constituting the hot air supply device 345. In order to increase the heat exchange efficiency, the baffles 387 may be further installed in a zigzag arrangement in the heat exchange housing 381. That is, when the high temperature and wet steam flowing into the heat exchange housing 381 flows along the zigzag flow path formed by the baffles 387, the contact time with the heat exchange pipes 386 becomes long and flows in turbulent flow, thereby exchanging heat exchange efficiency. Is higher.

In addition, the temperature of the wet steam is lowered during the heat exchange process, and condensate outlet 388 is further installed at the lower portion of the heat exchange housing 381 so as to discharge the condensed water generated by condensation of the water vapor contained in the wet steam. Therefore, when the low-temperature blower air, which is the outside air, is blown into the heat exchange pipes 386 by the air supply blower 351, the blower air is heat-exchanged with the high temperature wet steam flowing while passing through the heat exchange pipes 386. The high temperature may be supplied to the hot air supply device 345. The wet steam deprived of heat is discharged out of the waste heat recovery unit 380 through the waste heat discharge port 383 and supplied to the wet oxidation deodorizer 390 while the temperature is lowered.

According to the present invention, as shown in FIG. 2, the hot air dryer 330, the gravity separator 370, and the waste heat recovery 380 may be further installed in parallel.

In addition, the wet steam supplied to the wet oxidation deodorization apparatus 390 is secondly removed with fine dust and deodorized. Since the temperature of the wet steam is lowered by the heat exchange in the waste heat recovery 380, it is easier to deodorize than when the temperature is high. An exhaust blower 389 may be further installed in a conduit connecting the waste heat recovery 380 and the wet oxidation deodorization device 390.

As shown in FIG. 9, the wet oxidation deodorization device 390 includes an inlet 392 through which wet steam is introduced, and at least one first demister 393 for removing fine dust. The inlet stack 391 in which the deodorant liquid is stored and the connection passage 397 communicating with the inlet stack 391 are formed at the lower end and installed in parallel with the inlet stack 391. An outlet stack 396 having at least one second demister 398 for storing the secondary dust and secondary dusts, and having an outlet 399 formed thereon for discharging only the dedusted and deodorized air at the upper end thereof. ), A plurality of nozzles 400 installed in a plurality of rows below the outlet 399 of the outlet stack 396, and a deodorizing liquid stored in the inlet stack 391 and the outlet stack 396 in the nozzles 400. It has a pump 401 for supplying it. Accordingly, the wet steam supplied from the waste heat recovery 380 to the inlet stack 391 is first removed through the first demister 393 and fine contact with the deodorizing liquid stored in the inlet stack 391. The deodorizing process is then introduced into the outlet stack 396 through the connecting passage 397. Since the wet steam enters the outlet stack 396 and contacts the deodorizing liquid stored in the outlet stack 396, the wet steam is deodorized secondarily, and then fine dust is secondarily passed through the second demister 398. It is removed, and finally deodorized by the deodorizing liquid injected from the nozzle 400, and then discharged out of the wet oxidation deodorizer 390 through the outlet in a harmless state.

In the wet oxidation deodorization apparatus 390, the demisters 393 and 398 may be made of a mesh or a filter, and the demisters 393 and 398 are wet oxidation deodorization apparatuses to facilitate replacement or cleaning of the demisters 393 and 398. 390 is preferably made of a cartridge form that can be easily removable detachable from the outside. In addition, it is preferable that the deodorant liquid outlets 394 and 402 are opened and closed at the lower ends of the inlet stack 391 and the outlet stack 396 to discharge the contaminated deodorant liquid.

Meanwhile, the quantitative discharge device 355 for transporting the solid matter selected from the wet steam by the food waste and gravity separator 370 dried and discharged by the hot air dryer 330 is as shown in FIGS. 6 to 7C. Similarly, the food waste outlet 336 of the drying furnace 331 and the lower outlet 373 of the dust collecting container 371 is connected to communicate with the inside and the housing 356 provided with an outlet 357 at the end, and the housing ( It has a screw shaft 358 installed through the inner center of the 356, and a motor 359 for rotating the screw shaft 358. Therefore, the food waste discharged through the outlet 336 of the drying furnace 331 and the solid matter falling into the dust collecting container 371 flow into the housing 356 of the metering-out apparatus 355, and the housing 356. Food waste introduced into the waste may be quantitatively discharged through the outlet 357 while being compressed and transported toward the outlet 357 according to the rotation of the screw shaft 358.

The dried food waste is fed to the high speed fermenter 450 and is fast fermented, but according to the present invention, the food waste is once stored before the food waste is fed to the high speed fermenter 450, and then the fermentation conditions are applied to the high speed fermenter 450. Can be supplied accordingly. In addition, it is possible to further remove the foreign matter from the dried food waste before storing the dried food waste.

That is, in the case of further adding the sorting process, the sorting conveying conveyor 410 may be installed after the outlet 357 of the quantitative discharging device 355 as shown in FIG. 2. Therefore, the food waste may be removed from the foreign matter contained in the food waste in the process of transporting the selection transport conveyor (410). Following the sorting conveying conveyor 410, a storage tank 430 for storing food waste conveyed by the conveying conveyor 420 may be installed.

Although the storage tank 430 is not shown in detail in FIG. 2, a food waste inlet is formed at the upper portion and a discharge port is formed at the lower portion thereof, and the storage tank 430 is installed at the lower portion of the housing 431 and discharged from the housing 431. It has a quantitative discharge device 433 for quantitative discharge of the food waste. The food waste discharged from the quantitative discharge device 433 of the storage tank 430 may be introduced into the high speed fermenter 450 by the transfer conveyor 440.

The level gauge 435 is installed in the housing 431 of the storage tank 430, and when the value of the level gauge 435 reaches a set value, the process before the storage process is preferably controlled to be stopped for a predetermined time.

As shown in FIGS. 10A and 10B, the high speed fermenter 450 includes a housing 451 for fast fermenting and discharging the introduced food waste and a stirrer for stirring the food waste introduced into the housing 451. 465).

The housing 451 has a substantially U-shaped cross section in which a jacket 452 is formed between an inner cylinder and an outer cylinder, and is supported by a support 453. The jacket 452 is filled with a fruit oil, and the fruit oil is heated by a heater 454 installed under the housing 451 so that the inside of the housing 451 may be maintained in a fermentation condition. In addition, the food waste inlet 455 is installed at the upper end of the outer peripheral surface of the housing 451, and the food waste outlet 456 is formed at the lower end of the outer peripheral surface of the housing 451. At least one manhole 457 is installed on the housing 451 to clean the inside of the housing 451 or to introduce fermentation bacteria. One side of the housing 451 is provided with an air supply 458 for supplying air for fermentation inside the housing 451, the air supply blower 459 is installed in the air supply 458 into the housing 451 Air can be supplied. The other side of the housing 451 is provided with a wet steam outlet 460 for discharging the wet steam generated during the fermentation process, an exhaust blower 461 is installed in the wet steam outlet 460 to discharge the wet steam inside the housing 451. Can be. The wet steam can be harmless deodorized by being supplied to the wet oxidation deodorization apparatus 390 through a conduit connecting the exhaust blower 461 and the wet oxidation deodorization apparatus 390.

Preferably, the temperature sensor 462 is installed at the wet steam outlet 460. When the temperature detected by the temperature sensor 462 is greater than or equal to the set value, the heater 454 is stopped and the heater 454 is lower than the set value. Can be controlled to operate. In addition, a humidity sensor 463 may be further installed at the wet steam outlet 460, and in this case, the humidity sensor 463 may be controlled to stop the operation of the stirrer 465 when the humidity detected by the humidity sensor 463 is below a set value. .

The stirrer 465 is installed through a center of the housing 451 and is driven by a motor 466, and a plurality of arms 468 detachably coupled in a predetermined arrangement along the shaft 467. ) And a plurality of stirring paddles 469 installed at each free end of the arms 468. For example, a male thread is formed at one end of the arm 468 and a female thread is formed at the shaft 467 to simply couple the arm 468 to the shaft 467 or to simply detach the arm 468 from the shaft 467. Not only can it be easy to adjust the angle of the stirring paddle 469. In addition, two arms 468 and 468 that lie together on the radial line of the axis 467 among the arms 468 may have different lengths in order to increase agitation efficiency, and the arrangement of the arm pairs 468 and 468 may be different from each other. It is preferable to have a zigzag shape along

The food waste which is fermented and discharged by the high speed fermenter 450 is discharged by the discharge conveyor 470 and may be recycled as feed or compost.

Next will be described the operation of the food waste ultra-fast flow drying and fermentation apparatus according to the present invention configured as described above.

When the food waste is collected, it is first subjected to a pretreatment process by the pretreatment device 100. That is, the collected food waste is introduced into the hopper 120 and discharged by a predetermined amount while the food waste is crushed by the screw conveyor 122 installed at the lower portion thereof, and is supplied to the sorter 140 by the conveying conveyor 130.

In the sorter 140, the foreign matter contained in the food waste is automatically sorted by the vibration caused by the vibration generating unit. The selected foreign matter is discharged through the foreign matter outlet 142 and is transferred to the two-stage sorting conveyor 146. During this transfer, the foreign matter is further sorted and then discharged to the outside of the pretreatment device 100 to be separately embedded or incinerated.

The food waste sorted by the sorter 140 is discharged to the bottom of the sorter 140 and supplied to the dehydrator 160 by a transport conveyor. Food waste supplied to the dehydrator 160 is crushed, compressed and dehydrated while being conveyed by a pair of screws 166 and 166. The dehydration liquid generated in the dehydration process is introduced into the solid-liquid separation housing 167, and the dehydration liquid stored in the solid-liquid separation housing 167 is transferred to the dehydration liquid storage tank 174 and processed separately.

Meanwhile, the food waste dehydrated by the dehydrator 160 at a predetermined moisture content is supplied to the grinder 180 by the transfer conveyor 176. When the food waste is put into the grinder 180, the food waste is crushed by the rotary grinding blade and introduced into the storage tank 182 having the built-in stirrer and discharged by the transfer pump.

As described above, the pretreated food waste is supplied to the primary fermenter 310 by the conveying conveyor 190. When food waste is put into the primary fermenter 310, the fermentation bacteria are also added together and stirred by the stirring screw shaft 324 to mix the fermentation bacteria evenly to the food waste. The inside of the housing 311 is heated while the high temperature wet steam discharged from the hot air dryer 330 passes through the jacket 314 of the housing 311 of the primary fermenter 310, and the housing ( 311) Since the air is blown inside, the fermentation bacteria can grow well. The wet steam generated from the inside of the housing 311 in the wet steam and the primary effector is supplied to the wet oxidation deodorizing device 390 is deodorized by the deodorizing liquid and then discharged to the outside to prevent the occurrence of environmental pollution and odor.

The first fermented food waste is introduced into the drying furnace 331 of the hot air dryer 330. The food waste put into the drying furnace 331 is a predetermined content rate (about 30 to about 30 to about) by hot air blown by the hot air supply device 345 while being agitated by the plurality of impellers 341 rotated by the shaft 340. Dried to have a water content of 40%). As a result of the inventor's test, it was found that when the apparatus was dried using the apparatus according to the present invention, food waste can be rapidly dried in a very short time in the range of about 40-60 seconds. The high temperature wet steam containing harmful substances such as water vapor, dust and combustion gas generated during the drying process is supplied to the dust collecting container 371 of the gravity separator 370.

In the process of wet steam flow in the dust collecting container 371, the solid material having a high specific gravity falls to the lower portion of the dust collecting container 371, flows into the housing 356 of the metering-out apparatus 355, and is discharged from the drying furnace 331. The dry food waste is quantitatively transferred to the sorting transport conveyor 410. In addition, the solid material is removed from the dust collecting container 371 and the primary purified wet steam is maintained at a high temperature, and is supplied to the waste heat recovery 380 through the separation pipe 374. In addition, some of the wet steam is supplied to the primary fermenter 310 is used to match the fermentation conditions.

The high temperature wet steam supplied to the waste heat recovery 380 is blown by the air supply blower 351 constituting the hot air supply device 345 while passing through the heat exchange pipes 386 to flow inside the heat exchange pipes 386. Heat exchanged with the blower air, and thus the blower air can be supplied to the hot air supply device 345 by changing to a high temperature can increase the efficiency of the hot air supply device 345 and save the fuel required for hot air supply. The wet steam whose temperature is lowered by heat exchange with the blower air is supplied to the wet oxidation deodorizer 390. The condensate generated in the heat exchange process in the waste heat recovery 380 may be sent to a wastewater treatment facility for purification.

The wet oxidation deodorizer 390 is supplied with wet steam not only from the waste heat recovery 380 but also from the primary fermenter 310 and the high speed fermenter 450. The wet steam is subjected to the fine dust removal treatment through the first demister 393 of the inlet stack 391, deodorized by contacting the deodorizing liquid at the bottom of the inlet stack 391, and then flows to the outlet stack 396. (396) After contacting the deodorizing liquid at the bottom, it is deodorized again and then flows upwards. The wet steam is removed by the second demister 398 in the course of the upward flow of the wet steam, and then washed by the deodorizing liquid injected from the nozzle 400, deodorized, and then discharged to the outside air. The discharged air does not have a high temperature to affect the surrounding environment, and does not contain dust and is deodorized, so that no environmental pollution occurs and no odor is generated.

On the other hand, the food waste discharged from the hot air dryer 330 and transported by the metered discharge device 355 is removed again while passing through the sorting conveying conveyor 410. Therefore, since the food waste contains almost no foreign matter, it can be used as a good compost or feed. The food waste is put into the storage tank 430 by the transport conveyor 420 and stored. Food waste stored in the storage tank 430 is quantitatively transferred by the quantitative discharge device 433 and supplied to the high speed fermenter 450 along the transfer conveyor 440. When the food waste is stored in the storage tank 430, when the value of the level gauge 435 of the storage tank 430 reaches a set value, it is controlled to stop until the process before the storage process is changed to the set value or less.

Food waste put into the high-speed fermenter 450 is processed by the primary fermenter 310 in a homogeneous state, so the fruit oil and the air supply blower 459 heated by the heater 454 even without the addition of fermentation bacteria. Under the fermentation atmosphere made by blowing air, it can be fermented at high speed while being stirred by the stirrer 465. The wet steam generated in the high-speed firing effect tablet is supplied to the wet oxidation deodorizing device 390 and deodorized and discharged to the outside air in a harmless state, so that no odor occurs in the high-speed firing effect tablet. In addition, when the temperature of the wet steam discharged from the high-speed fermentation well is higher than the set value, the operation of the heater 454 is stopped, and if it is lower than the set value, the heater 454 is operated, so that the high speed fermentation atmosphere can be constantly adjusted. In addition, when the humidity of the wet steam discharged from the high-speed firing effect tablet is below the set value, the operation of the stirrer 465 is stopped, so that the moisture content of the fermented food waste can be constantly adjusted.

The high-speed fermented food waste is transported and stored by the discharge conveyor 470, or is loaded or packaged in a vehicle and used as a good feed or compost.

As described above, in the ultrafast flow drying and fermentation system for food waste according to the present invention, the waste heat source having the high temperature and wet steam generated during the drying process is recovered by the waste heat recovery 380 to the hot air supply device 345. Can supply Therefore, the efficiency of generating hot air for supplying to the drying furnace 331 is increased, and since the impellers 341 of the drying furnace 331 are ideally arranged, not only can the food waste be quickly dried, but also the drying of the food waste. The consumption of fuel required can be reduced.

In addition, the food waste is fermented by the primary fermenter 310 to dry after fermentation while maintaining a state of propagation, it is possible to ferment food waste at high speed. Therefore, it is not only economical to feed or compost food waste, but also reduce the cost of feed or compost by mass production.

In addition, in the process of transporting the dry food waste by the sorting transfer conveyor 410, by further selecting and removing the foreign matter can supply a good feed or compost without foreign matter or impurities, so that the livestock is damaged or The farmland can be prevented from being contaminated.

In addition, the wet odor generated from primary primary effect tablets, wet steam containing bad substances generated during the drying process, and the bad smell odor generated from high-speed ignition well containing both toxic substances generated during the drying process wet wet deodorizing device (390 The deodorizing process is discharged by), and harmful substances are firstly sorted by the gravity separator 370 and secondly removed by the wet oxidation deodorizing apparatus 390, thereby preventing environmental pollution or odor occurrence. Therefore, it can be excluded from the object of hate facility and can widen the range of facility location conditions.

Claims (15)

A hot air dryer connected to a pretreatment apparatus for inputting, sorting, crushing, compressing, dehydrating and crushing the collected food waste and receiving a quantitative supply of pretreated food waste for hot air drying; A high speed fermenter for receiving and fermenting dry food waste conveyed from the hot air dryer; Collects the high temperature wet steam containing steam, dust and combustion gas generated from the hot air dryer to sort the solid matter contained in the wet steam by gravity, and discharges the selected solid material together with the food waste discharged from the hot air dryer. In addition, the primary purified wet steam and the gravity separator separately discharged; A waste heat recovery unit for preheating the blown air by supplying heat to the hot air dryer by lowering heat exchange between the wet steam discharged from the gravity separator and the air blown by the hot air dryer, and lowering the temperature of the wet steam; And, Ultrasonic flow drying and fermentation apparatus for food waste, characterized in that it comprises a wet oxidized deodorizing device for discharging the wet steam passed through the waste heat recovery secondary to fine dust removal and deodorization treatment. The method of claim 1, The hot air dryer has a drying furnace for drying and discharging the food waste introduced by hot air, and a hot air supply device for supplying hot air to the drying furnace; The drying furnace, a food waste inlet, a food waste outlet, a hot air supply port and a wet steam outlet are installed, the shaft is installed through the housing and rotated by a motor, and screwed along the axis arranged food waste Having a plurality of impellers for stirring transfer; The hot air supply device has a burner, a hot air furnace for connecting the burner and the drying furnace, and an air blower for blowing the blown air heat-exchanged with the wet steam by the waste heat recovery machine to the hot air furnace, the food waste ultra-fast flow drying and fermentation apparatus . The method of claim 2, Each impeller has an arm coupled radially to the axis, and an agitating blade installed at the free end of the arm; The arms are arranged to draw screw trajectories at intervals of 90 ° about the axis and are detachably coupled to the axis; The stirring feather is a food waste ultra-fast flow drying and fermentation apparatus, characterized in that disposed at different angles to evenly stir the food waste. The method of claim 3, wherein A plurality of impellers arranged at a predetermined position among the impellers arranged in the screw trajectory are installed in the same diameter direction with respect to the shaft, and the food waste is characterized in that the feed section of the food waste is slower than in other regions. Ultrasonic waste drying and fermentation system. The method of claim 2, The hot stove is provided with a cylindrical shell that protects the fire of the burner by a predetermined length from the burner and propagates the fire, and a screw guide for guiding the air flow blown by the air supply blower around the shell to the turbulence. Food waste ultra-fast flow drying and fermentation apparatus characterized in that it is installed. The method of claim 1, The food waste discharged from the hot air dryer is connected to the hot air dryer so as to flow in, and a discharge port is installed at the distal end, and is installed through the inner center of the housing to rotate according to the driving of the motor, thereby transporting the compressed food waste introduced into the housing. While the quantitative discharge device having a screw shaft for quantitatively discharging through the discharge port is further installed, The gravity separator is connected to the inlet of the top to communicate with the interior of the drying furnace so that the wet steam discharged from the drying furnace into the inside, and the lower outlet to supply the solid matter that is separated and separated by a large specific gravity from the wet steam to the quantitative discharge device. A dust collecting container connected to the fixed quantity discharge device, and an inlet is placed inside the dust collecting container, and an outlet is placed outside the upper of the dust collecting container to discharge only the wet steam from which solid materials have been removed to the waste heat recovery unit. Food waste ultra-fast flow drying and fermentation apparatus characterized in that it has a separation pipe is installed through the filter means installed therein. The method of claim 1, The waste heat recovery unit is connected to the gravity separator, waste heat inlet formed on one side of the outer circumferential surface so as to introduce high temperature wet steam discharged from the gravity separator, waste heat outlet formed on the other side of the outer circumferential surface and connected to a wet oxidation deodorizing device, the waste heat outlet side end portion A heat exchange housing having an air inlet installed at the end and a blown air outlet formed at an end portion of the waste heat inlet and connected to a hot air supply device; A plurality of heat exchangers installed over the air inlet and the blown air outlet and heat-exchanged with the wet steam introduced into the housing through the air inlet by the air blower of the hot air supply device to supply to the hot air supply device With pipes; And, food waste ultra-high speed flow drying and fermentation apparatus characterized in that it has a plurality of baffles to be installed in a zigzag arrangement in the flow path outside the heat exchange pipe in the heat exchange housing to be discharged by zigzag flow. The method of claim 1, The wet oxidation deodorization device, the inlet is formed in the upper inlet for the introduction of the wet steam discharged from the waste heat recovery, at least one first demister for removing fine dust is built in the bottom and the inlet stack for storing the deodorant liquid, and A connecting passage communicating with the inlet stack is formed at the lower end and is installed in parallel with the inlet stack. At the bottom, at least one second demister for secondary removal of fine dust is stored at the bottom and fine dust is removed at the top. And an outlet stack having an outlet for discharging only deodorized air, nozzles installed in a plurality of rows below the outlet of the outlet stack, and supplying deodorant liquid stored in the inlet stack and the outlet stack to the nozzles. Food waste ultra-fast flow drying and fermentation apparatus characterized by having a pump. The method of claim 1, The high speed fermenter has a housing for discharging the food waste to be fermented at high speed, and a stirrer for stirring the food waste put into the housing; The housing is formed of a U-shaped cross-sectional shape is formed between the inner cylinder and the outer cylinder and the fruit oil is filled in the jacket, food waste inlet, food waste outlet, at least one manhole for cleaning the inside or input of fermentation bacteria, An air inlet for supplying air for fermentation therein and a wet steam outlet for discharging the wet steam generated in the fermentation process toward a wet oxidation deodorizer; A heater is installed at the lower part of the housing to heat the fruit oil filled in the jacket; The stirrer is installed through the center of the housing, the shaft driven by the motor, the pair is detachably coupled in a predetermined arrangement along the axis, and the corresponding pairs that are on the same radius with respect to the shaft are different in length from each other Food waste ultra-fast flow drying and fermentation apparatus characterized in that it has an arm and a plurality of stirring paddles installed at each free end of the arms. The method of claim 9, A temperature sensor is installed at the wet steam outlet, and the operation of the heater is stopped when the temperature sensed by the temperature sensor is higher than or equal to the set value, and the heater is operated when the temperature is lower than the set value. . The method according to claim 9 or 10, A humidity sensor is installed in the wet steam outlet, and the food waste ultra-fast flow drying and fermentation device, characterized in that the operation of the stirrer is stopped when the humidity detected by the humidity sensor is less than the set value. The method of claim 1, Food waste ultra-fast flow drying and fermentation apparatus, characterized in that the primary fermenter for storing the pretreated food waste and the first fermentation between the pre-treatment device and the hot air dryer. The method of claim 12, The primary fermenter has a spiral jacket for passing the wet steam discharged from the hot air dryer between the inner cylinder and the outer cylinder, and the wet steam outlet of the jacket is connected to a wet oxidation deodorizing device and discharges the wet steam generated from the primary effector. It is connected to the exhaust pipe for, the food waste and fermentation bacteria in the manhole is installed so as to be opened or closed on the upper side, the lower housing is formed with an outlet for discharging food waste; A stirring screw shaft rotating through a drive of a motor through an inner center of the housing; And, food waste ultra-fast flow drying and fermentation apparatus having an air supply blower for supplying air to the fermentation bacteria introduced into the housing. The method according to claim 12 or 13, A level gauge is installed in the housing of the primary fermenter, and when the value of the level gauge is lower than the set value, the food waste is stopped by the hot air dryer, and when the value of the level gauge is higher than the set value, Food waste ultra-fast flow drying and fermentation apparatus, characterized in that the process is to be suspended. According to claim 1, A storage tank is further installed between the hot air dryer and the high speed fermenter to store food waste before fermentation and to supply the high speed fermenter; The storage tank has a housing in which a food waste inlet is formed at an upper portion thereof, and a discharge hole is formed in a lower portion thereof, and a fixed amount discharge device for quantitatively discharging food waste discharged from the housing installed at a lower portion of the housing; Level housing is installed in the housing of the storage tank, food waste ultra-fast flow drying and fermentation apparatus, characterized in that the process before the storage process is stopped for a predetermined time when the value of the level gauge reaches a set value.