JP6360724B2 - Organic waste drying equipment - Google Patents

Description

  The present invention relates to an organic waste drying apparatus.

  Compost and feed methods are widely known for the treatment of organic waste, such as waste waste medium, food residues, and processed fishery product waste discharged after artificial cultivation of straw. It often takes several months to make compost and feed. In addition, when composting or foddering organic waste, foul odors often occur during the manufacturing process, and there are various restrictions in the selection of organic waste treatment sites. The current situation is that processing has not caught up.

The present applicant has obtained a patent relating to a waste medium drying apparatus as disclosed in Patent Document 1 in order to solve the problem of waste medium treatment, which is a representative example of such organic waste. ing.
Patent Document 2 discloses a configuration of a heating device that can burn waste waste medium as fuel.

Japanese Patent No. 5451589 JP 2012-225530 A

Since the drying apparatus of the waste culture medium currently disclosed by patent document 1 uses the heavy oil (kerosene) burner continuously as a dryer for drying a waste waste culture medium, the subject that a running cost becomes high occurs. is there.
Further, when the waste culture medium is directly burned as fuel as in the heating device disclosed in Patent Document 2, there is a problem that ash is attached to the inner surface of the combustion chamber and the maintenance frequency of the combustion chamber is increased. The deposits on the inner surface of the combustion chamber are thought to be due to low melting point materials derived from raw materials contained in the waste medium and compounds added to the medium. Thus, when performing the process which burns a waste waste culture medium, the problem of the deposit | attachment to the inner surface of a combustion furnace becomes an unavoidable subject.

Accordingly, the present invention has been made to solve the above-mentioned problems, and the object is as follows.
In other words, by minimizing the amount of fossil fuel typified by heavy oil and kerosene and reducing the amount of deposits in the combustion device as much as possible even when burning the waste medium as organic waste, An object of the present invention is to provide an organic waste drying apparatus capable of efficiently drying a waste medium at a running cost.

As a result of intensive studies by the inventors of the present application in order to solve the above-mentioned problems, the following configuration has been conceived.
That is, the present invention provides a hot air generator for burning fuel to generate hot air, a drying processing object supply path for supplying a drying processing object made of organic waste introduced from a material inlet, and the hot air A hot air supply path for supplying hot air of the generator is connected to the bottom portion, and the drying object supply path is connected to a position above the connection position of the hot air supply path, and is formed in a vertically long shape. A dryer, a cyclone furnace that separates the hot air and the dried processed body discharged from the vertical dryer into the hot air and the dried processed body, and the dried processed body separated by the cyclone furnace. And a mixer that is connected to the drying target supply path and mixes a part of the dry processing body that has passed through the classification unit with the drying target that has been input from the material input port. When, The drying treatment body remaining on the serial classification unit and the circulation supply path for supplying to said hot-air generator, a drying device of the organic waste, characterized in that it comprises a.

  As a result, the low-melting-point substance and compound components mixed in the fine particle state in the dry-processed dry body after passing through the vertical dryer are removed, and the dry-processed body is circulated to the hot air generator as fuel. Can be supplied. Thereby, the malfunction which arises in a hot-air generator by the deposit | attachment accumulating on the inner surface of a hot-air generator can be eliminated. In addition, the organic waste represented by the waste medium is dried and then used as a fuel whose particle size is adjusted, so the amount of fossil fuel required for the drying process is made as small as possible. And running costs can be significantly reduced.

  Moreover, it is preferable that the said dry process body which passed the said classification part is divided into 2 by the division part, and one is supplied to the said mixer.

  Thereby, it is possible to mix a half of the dry processed body dried by the vertical dryer at least once with a dry processing target composed of organic waste with a high water content newly input from the material input port. Therefore, the moisture content of the object to be dried can be reduced at the stage before being supplied to the vertical dryer. Therefore, the fuel used in the hot air generator can be reduced.

A hot air generator for burning the fuel to generate hot air; a drying process target supply path for supplying a dry process target made of organic waste introduced from the material input port; and a hot air for the hot air generator. A hot air supply path for connecting the hot air supply path is connected to the bottom portion, the drying object supply path is connected to a position above the connection position of the hot air supply path, and a vertical dryer formed in a vertically long shape, A cyclone furnace that separates the mixture of the hot air and the dried processed body discharged from the vertical dryer into the hot air and the dried processed body, and the dried processed body separated by the cyclone furnace are divided into two parts A drying unit that is connected to the drying unit supply path and is divided into two parts by the dividing unit into a drying unit consisting of organic waste charged from the material input port. mixture A mixer for a classification unit for classifying the other bisected the dried body by the division unit, the drying treatment body circulation supply path for supplying to said hot-air generator remaining in the classification portion, the The hot air generator further includes a temperature management unit that manages a temperature of hot air to be supplied to the hot air supply path, and the temperature management unit includes a temperature measurement unit that measures an internal temperature of the hot air generator; An outside air supply unit that supplies outside air to the internal space of the hot air generator, and an outside air supply amount to the internal space of the hot air generator by the outside air supply unit is controlled according to the temperature measured by the temperature measurement unit and a control unit for, at a plurality of positions in the height direction of the hot-air generator, organic to said temperature measuring section and the outside air supply unit is characterized that you have been arranged in a state where the paired It can also be used as a waste drying apparatus.

Thereby, since the quantity of the dry process body which should be processed in a classification part decreases, the maintenance frequency of a classification part can be reduced. In addition, the classifying unit can be downsized. In addition, the low-melting-point substances and compounds that are mixed in the form of fine particles in the dry-processed body that has been processed by passing through the vertical dryer are removed, and the dry-processed body is circulated and supplied to the hot air generator as fuel. Can be made. Thereby, the malfunction which arises in a hot-air generator by a deposit depositing on the inner surface of a hot-air generator can also be eliminated.

  The hot air generator further includes a temperature management unit that manages the temperature of hot air to be supplied to the hot air supply path, and the temperature management unit measures the internal temperature of the hot air generator. And an outside air supply unit that supplies outside air to the internal space of the hot air generator, and an outside air supply amount to the internal space of the hot air generator by the outside air supply unit according to the temperature measured by the temperature measurement unit. It is preferable that the temperature measuring unit and the outside air supply unit are arranged in a pair at a plurality of locations in the height direction of the hot air generator.

  As a result, the low-melting-point substance and compound components mixed in the fine particle state in the dry-processed dry body after passing through the vertical dryer are removed, and the dry-processed body is circulated to the hot air generator as fuel. Can be supplied. Thereby, the malfunction which arises in a hot-air generator by the deposit | attachment accumulating on the inner surface of a hot-air generator can be eliminated.

  The circulation supply path is preferably connected to an upper position of the hot air generator.

  Thereby, the residence time of the dry process body in a hot-air generator can be made as long as possible, and a dry process body can be reliably burned in a hot-air generator. Since the high-temperature combustion gas generated by the combustion can be supplied to the vertical dryer as hot air, it is possible to treat organic waste at a lower running cost.

  Moreover, it is preferable that the hot air temperature adjustment part is arrange | positioned between the said hot air generator and the said vertical dryer, Furthermore, it is more preferable that the said hot air temperature adjustment part is a heat exchanger.

  Thereby, the hot air supplied to a vertical dryer from a hot air generator can be made uniform, and the quality of a drying process body can be made uniform. Moreover, the waste heat can be effectively used by adjusting the temperature of the hot air using the heat exchanger. In particular, if power is generated using waste heat obtained by a heat exchanger, the organic waste drying device can also supply the necessary power.

By adopting the configuration of the organic waste drying apparatus according to the present invention, the low-melting-point substance and the components of the compound that are mixed in a fine particle state in the dry-treated body obtained by drying the processing object are removed. In addition, the dried body can be circulated and supplied to the hot air generator as fuel. Thereby, the malfunction which arises in a hot-air generator by the deposit | attachment accumulating on the inner surface of a hot-air generator can be eliminated.
In addition, the organic waste represented by the waste medium is dried and then used as a fuel whose particle size is adjusted. Therefore, it is easy to control the combustion temperature in the hot air generator, and the drying target As a result, the amount of fossil fuel required for drying can be reduced as much as possible, and the running cost can be greatly reduced.

It is a schematic block diagram of the drying apparatus of the organic waste concerning 1st Embodiment. It is a schematic block diagram of the drying apparatus of the organic waste concerning 2nd Embodiment. It is a schematic block diagram of the drying apparatus of the organic waste concerning 3rd Embodiment. It is a schematic block diagram which shows the modification of the drying apparatus of organic waste.

  Hereinafter, an embodiment of an organic waste drying apparatus according to the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram of an organic waste drying apparatus according to the first embodiment. The organic waste drying apparatus of the present embodiment circulates and uses part of the dried processed body after the particle size adjustment as fuel after adjusting the particle size of the dried processed body after the drying process. The organic waste drying apparatus 100 according to the present embodiment employs a waste medium after artificial cultivation of shimeji mushrooms as the organic waste to be dried.

  The organic waste drying apparatus 100 according to the present embodiment supplies combustion gas generated by burning heavy oil using the heavy oil burner 10 to the hot air generator 20 as hot air at the start of operation. The hot air supplied to the hot air generator 20 is supplied to the vertical dryer 30 via the hot air supply path 22. The hot air supply path 22 is connected to a hot air intake portion 32 disposed at the bottom of the vertical dryer 30. As shown in FIG. 1, the vertical dryer 30 is formed in a vertically long shape, and the hot air taken in from the hot air intake unit 32 rises in the internal space of the vertical dryer 30 and is located above the vertical dryer. The product is discharged from the provided discharge port 34 to the outside of the vertical dryer 30.

  In the vertical dryer 30, a rotary crusher 33 is disposed at a position below the hot air intake unit 32, and a drying processing object supply port is provided at a position above the hot air intake unit 32. A waste medium supply port 36 is provided. The drying medium supply port 42 is connected to the waste medium supply port 36. Here, a feed screw is used as the drying object supply path 42. A mixer 44 having a material inlet 40 for introducing the waste medium is disposed upstream of the drying object supply path 42. Here, a paddle mixer was adopted as a mixer.

  The waste medium supplied from the material input port 40 is supplied to the waste medium supply port 36 via the mixer 44 and the drying process target supply path 42 and is input to the internal space of the vertical dryer 30. . At start-up, the waste medium passing through the mixer 44 is simply transported.

  The waste medium introduced into the internal space of the vertical dryer 30 is pulverized by the rotary crusher 33 disposed at the bottom of the vertical dryer 30 and discharged to the hot air intake unit 32 side (scraping up). And) is subjected to a drying process by hot air from the hot air intake section 32. As described above, since an upward flow due to hot air is generated in the internal space of the vertical dryer 30, the waste medium (dried waste medium) dried by the hot air is mixed with the hot air in the vertical dryer 30. The interior space is raised to an upper position and discharged from the discharge port 34 to the outside of the vertical dryer 30.

A transport path 38 is connected to the discharge port 34 of the vertical dryer 30. The downstream end of the conveyance path 38 is connected to a cyclone furnace 50 for separating the mixture of hot air and dry waste waste medium, which is a dried body, into hot air and dry waste waste medium.
The hot air separated by the cyclone furnace 50 is exhausted by a bag filter 52 typified by a water scrubber and then discharged into the atmosphere.

On the other hand, the dried waste waste medium separated from the hot air by the cyclone furnace 50 is divided into approximately two parts by separating the dried waste waste medium separated by passing through a dividing portion 60 formed in a tube having an inverted Y shape. One branching destination 62 in the dividing unit 60 opens toward the return conveyor 66, and about half of the dry waste waste medium is discharged to the return conveyor 66. At the end position of the return conveyor 66, a second input section 46 of a paddle mixer which is a mixer 44 is installed in a positioned state.

  Since the dry waste waste medium supplied from the return conveyor 66 to the mixer 44 has passed through the vertical dryer 30 at least once, the waste waste medium (as a dry processing object to be fed from the material inlet 40) ( Compared to a water content of 65%, the water content is significantly lower (water content of 15%). In this way, the dry waste waste medium having a low water content is mixed with the waste waste medium introduced from the material input port 40 by the mixer 44, whereby the dry waste waste medium is supplied to the vertical dryer 30 from the drying object supply path 42. A so-called pre-drying treatment can be performed in which the moisture content of the waste medium is about 30%, which is about half of the initial moisture content. By using the waste medium that has been pre-dried in this way as an object to be dried, the processing time of the vertical dryer 30 can be shortened, and the temperature of hot air to be supplied into the vertical dryer 30 can be reduced. For example, the load on the vertical dryer 30 can be reduced.

  In addition, a vibration sieve 70 as a classification unit is disposed at the other branch destination 64 of the dividing unit 60. The vibrating sieve 70 is for removing a solidified body made of a raw material-derived low-melting-point substance and a compound of an additive contained in the koji culture medium by a drying process using hot air (vertical dryer 30). Since this coagulated body often has a particle size smaller than the particle size of the waste waste medium, the dried waste waste medium, which is a dry treated body dried at least once by the vertical dryer 30, is passed through the vibrating sieve 70. Thus, it is possible to separate the dry waste waste medium having a small particle size containing the coagulation component at a high concentration.

  The dry waste waste medium having a small particle size and containing the coagulated body component having passed through the vibrating sieve 70 at a high concentration is recovered as a regenerating material by the recovery unit 80. The dried straw waste medium collected by the collection unit 80 can be used as a raw material for livestock feed, compost, and the like.

  On the other hand, the dried waste medium having a predetermined particle size or more having a low concentration of the solidified component remaining on the vibrating sieve 70 is supplied to the circulation supply path 90. The downstream end of the circulation supply path 90 is connected to the hot air generator 20. The circulation supply path 90 is transported by the air supplied by the blower fan 92.

  In the present embodiment, as shown in FIG. 1, the circulation supply path 90 is connected to the fuel supply port 24 provided at the same height as the combustion gas supply port of the heavy oil burner 10 in the upper position of the hot air generator 20. It is connected. If dry waste waste medium, which is fuel, is supplied from the fuel supply port 24, hot air can be generated only from the dry waste medium. As described above, once the dry waste waste medium as the fuel for continuous operation is supplied from the circulation supply path 90 to the hot air generator 20, the dry waste is discarded as long as the new waste waste medium is continuously supplied from the material input port 40. Only the culture medium can be burned in the hot air generator 20 to obtain hot air. Thereby, compared with the drying apparatus of the organic waste concerning a prior art, the usage-amount of heavy oil can be reduced significantly.

  Moreover, the large-particle-size dry waste waste culture medium supplied to the circulation supply path 90 as a fuel for continuous operation is in a state where the components that become solidified bodies are greatly reduced. By using the dried waste waste medium in which the components that become solidified bodies are reduced (removed) as the fuel for the hot air generator 20, adhesion of the solidified components to the inner wall surface of the hot air generator 20 is greatly suppressed. This is advantageous in that the maintenance frequency of the hot air generator 20 can be reduced.

(Second Embodiment)
As shown in FIG. 2, the organic waste drying apparatus 100 according to this embodiment is configured so that the temperature of the hot air supplied from the hot air generator 20 to the vertical dryer 30 is an appropriate temperature. It is characteristic that 200 is disposed. Here, the same configurations as those of the first embodiment are denoted by the member numbers used in the first embodiment, and detailed description of each configuration in the drawings is omitted.

  The temperature management unit 200 uses the temperature measurement unit 210 that measures the internal temperature of the hot air generator 20, the blower fan 221 for supplying outside air to the hot air generator 20, and the outside air supplied from the blower fan 221 to the hot air generator. An outside air supply unit 220 including an outside air supply valve 222 to be supplied, and a control unit 230 for controlling the operations of the blower fan 221 and the outside air supply valve 222 based on the temperature measured by the temperature measurement unit 210 are provided. Here, an electromagnetic valve is used as the outside air supply valve 222.

  As is clear from FIG. 2, the temperature measurement unit 210 and the outside air supply valve 222 arranged in the hot air generator 20 are spaced apart from each other in the height direction of the hot air generator 20 in a state of being paired with each other. It is arranged at three places. Thus, the temperature of the hot air supplied from the hot air generator 20 is also managed by controlling the internal temperature of the hot air generator 20 at a plurality of locations. It is advantageous in that it is possible to avoid problems caused by temperature changes of hot air such as waste medium burning.

(Third embodiment)
FIG. 3 is a schematic configuration diagram of an organic waste drying apparatus according to the third embodiment. As is clear from FIG. 3, the present embodiment is characterized in that the arrangement position of the vibration sieve 70 that is the classification unit is different from that of the first and second embodiments. Also in the present embodiment, for the same configuration as the configuration described in the previous embodiment, the detailed description of each configuration in FIG. 3 is omitted by using the member numbers used in the previous embodiment. Yes.

  As shown in FIG. 3, the present embodiment is characterized in that a vibrating sieve 70 is disposed immediately below the cyclone furnace 50. According to this configuration, the amount of the dry waste waste medium classified by the vibration sieve 70 is twice that of the previous embodiment. Therefore, although the vibration sieve 70 needs to be enlarged, the vibration that becomes the fuel for continuous operation The amount of the large particle size dry waste medium remaining on the sieve 70 can also be doubled. Thereby, even if only the fuel for continuous operation is burned by the hot air generator 20, the hot air necessary and sufficient for operating the organic waste drying apparatus 100 according to the present invention can be obtained.

  The dry waste waste medium having a small particle size that has passed through the vibrating sieve 70 is divided into two by a dividing unit 60 disposed immediately below the vibrating sieve 70, one being supplied to the return conveyor 66, and the other being a collecting unit. 80 will be collected. If the amount of dry waste waste medium to be supplied to the return conveyor 66 is insufficient, a part of the dry waste medium of continuous operation fuel may be supplied to the return conveyor 66.

Although the organic waste drying apparatus 100 according to the present invention has been described in detail above based on the embodiments, the present invention is not limited to the above embodiments.
For example, in the above-described embodiment, the heavy oil burner 10 is used as a heat source supply unit at the time of starting the organic waste drying apparatus 100. However, a pellet made from a gas burner or a waste waste medium as a raw material is used as a fuel at the time of starting. Other burners can also be used. Moreover, the pellets manufactured in advance can be supplied to the circulation supply path 90 or the hot air generator 20 as a fuel for continuous operation.

Moreover, the supply operation of the waste culture medium from the material input port 40 is controlled by an operation control unit (not shown) so that the supply amount per hour of the waste culture medium supplied to the material input port 40 is constant. A form may be adopted.
Furthermore, the moisture content measuring means for measuring the moisture content of the waste medium supplied from the material input port 40 is provided with one or more of the material input port 40, the drying object supply path 42, and the mixer 44. In addition, an operation control unit (not shown) that adjusts the amount of the waste culture medium input to the material input port 40 in accordance with the water content of the waste culture medium measured by the moisture content measuring means may be provided.

  As shown in FIG. 4, a hot air temperature adjusting unit 240 that adjusts the temperature of the hot air supplied to the vertical dryer 30 may be disposed in the hot air supply path 22. As the hot air temperature adjustment unit 240, it is preferable to employ an outside air intake port or a heat exchanger that takes in outside air. The hot air temperature adjusting unit 240 is configured to control the operation by the second control unit 250 based on the temperature measured by the thermometer disposed in the hot air supply path 22 or the vertical dryer 30. Also good. In particular, when a heat exchanger is employed in the hot air temperature adjustment unit 240, if a power generation device (not shown) using thermal energy obtained by the heat exchanger is further added, the organic waste drying device 100 Independent operation is also possible, which is preferable.

  In addition, as shown in FIG. 4, a heat exchanger 260 may be disposed between the cyclone furnace 50 and the bag filter 52. Thereby, the thermal energy which the waste hot air isolate | separated by the cyclone furnace 50 has can be used effectively. As long as the waste heat obtained from the heat exchanger 260 disposed between the cyclone furnace 50 and the bag filter 52 is sufficient as long as the hot water is supplied.

Moreover, in this embodiment, the waste waste medium is illustrated as an example of the organic waste, but the organic waste is not limited to the waste waste medium, and food residues, agricultural products, fishery Of course, waste generated during the processing of food products and livestock products can be used as the object to be dried.
Furthermore, even the embodiments in which the above-described embodiments and arbitrary configurations in the above-described modified examples are appropriately combined belong to the technical scope of the present invention.

10 heavy oil burners, 20 hot air generators, 22 hot air supply passages, 24 fuel supply ports,
30 vertical dryer, 32 hot air intake, 33 rotary crusher, 34 outlet,
36 waste medium supply port, 38 transport path, 40 material input port,
42 Drying object supply path, 44 mixer, 46 charging section, 50 cyclone furnace,
52 bug filters, 60 divisions, 62 one branch destination, 64 other branch destination,
66 Return conveyor, 70 Vibrating sieve (classification part), 80 Collection part, 90 Circulation supply path,
92 blower fan, 100 organic waste drying device, 200 temperature control unit,
210 temperature measurement unit, 220 outside air supply unit, 221 blower fan, 222 outside air supply valve,
230 control unit, 240 hot air temperature adjustment unit, 250 second control unit, 260 heat exchanger

Claims (7)

A hot air generator that generates hot air by burning fuel;
A drying object supply path for supplying a drying object consisting of organic waste introduced from the material input port;
A hot air supply path for supplying hot air of the hot air generator is connected to a bottom portion, and the drying object supply path is connected to a position above the connection position of the hot air supply path, and is formed in a vertically long shape. A vertical dryer;
A cyclone furnace for separating the mixture of the hot air and the dry processed body discharged from the vertical dryer into the hot air and the dried processed body, respectively;
A classification unit for classifying the dried processed body separated by the cyclone furnace;
A mixer that is connected to the drying processing object supply path and mixes a part of the drying processing body that has passed through the classification unit with the drying processing object that is input from the material input port;
A circulation supply path for supplying the hot air generator with the dried processed body remaining in the classification section;
An organic waste drying apparatus comprising: 2. The organic waste drying apparatus according to claim 1, wherein the dried processed body that has passed through the classification unit is divided into two by a dividing unit, and one of the two is supplied to the mixer. A hot air generator that generates hot air by burning fuel;
A drying object supply path for supplying a drying object consisting of organic waste introduced from the material input port;
A hot air supply path for supplying hot air of the hot air generator is connected to a bottom portion, and the drying object supply path is connected to a position above the connection position of the hot air supply path, and is formed in a vertically long shape. A vertical dryer;
A cyclone furnace for separating the mixture of the hot air and the dry processed body discharged from the vertical dryer into the hot air and the dried processed body, respectively;
A splitting part for splitting the dry processed body separated by the cyclone furnace;
A mixer that is connected to the drying processing object supply path and mixes one of the drying processing bodies divided into two by the dividing unit into the drying processing object input from the material input port;
A classification unit for classifying the other of the dried processed bodies divided into two by the division unit;
A circulation supply path for supplying the hot air generator with the dried processed body remaining in the classification section;
Equipped with a,
The hot air generator further includes a temperature management unit that manages the temperature of hot air to be supplied to the hot air supply path,
The temperature management unit
According to the temperature measurement unit that measures the internal temperature of the hot air generator, the outside air supply unit that supplies the outside air to the internal space of the hot air generator, and the outside air supply unit according to the temperature measured by the temperature measurement unit A controller that controls the amount of outside air supplied to the internal space of the hot air generator,
Drying device of the at a plurality of positions in the height direction of the hot-air generator, organic waste and the temperature measuring unit and the ambient air supply unit, characterized that you have been arranged in a state of a pair. It said hot-air generator further has a temperature control unit for managing the temperature of the hot air to be supplied to the hot air supply path,
The temperature management unit
According to the temperature measurement unit that measures the internal temperature of the hot air generator, the outside air supply unit that supplies the outside air to the internal space of the hot air generator, and the outside air supply unit according to the temperature measured by the temperature measurement unit A controller that controls the amount of outside air supplied to the internal space of the hot air generator,
The organic waste according to claim 1 or 2 , wherein the temperature measuring unit and the outside air supply unit are arranged in a pair at a plurality of locations in the height direction of the hot air generator. Thing drying equipment. 5. The organic waste drying apparatus according to claim 1, wherein the circulation supply path is connected to an upper position of the hot air generator. The organic waste according to any one of claims 1 to 5, wherein a hot air temperature adjusting unit is disposed between the hot air generator and the vertical dryer . of the drying apparatus. 7. The organic waste drying apparatus according to claim 6, wherein the hot air temperature adjusting unit is a heat exchanger.

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