JP2007021410A - Apparatus and method for treating organic waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for treating organic waste which can sufficiently and rapidly performing heating and boiling organic waste. <P>SOLUTION: Agitating means 82, 90, 92, 94, 98 for agitating the organic waste 12 and heated steam supply means 68, 70, 72 supplying high temperature and high pressure heated steam into the housing body are installed in a housing body 14 housing the organic waste 12 in the inside. Further, before supplying the high temperature and high pressure heated steam into the housing body 14 by the heated steam supply means 68, 70, 72, pressure reduction means 75c, 78, 80 reducing pressure in the housing body 14 are installed, and while the organic waste 12 housed in the housing body 14 is agitated in the housing body in the state of reduced pressure, the organic waste is brought into contact with the high temperature and high pressure heated steam to be heated and boiled. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an organic waste processing apparatus and processing method, and more particularly, to an improvement in an apparatus and method for processing organic waste by ripening.

  As is well known, industrial waste discharged from agriculture, forestry, livestock industry, fishery industry, food processing industry, etc., as well as trash from various stores, offices, general households, etc. For example, wastes containing various organic substances such as vegetable waste, manure, dead fish, ara, shells, food residues, etc., so-called organic wastes are included.

  Conventionally, these organic wastes are generally treated either by incineration or by fermentation or decomposition utilizing the biodegradation action of microorganisms. In incineration, harmful substances such as toxic gases and dioxins are used. Is a problem. On the other hand, when fermenting or decomposing, organic waste can be effectively used by composting or foraging, but it takes a lot of time and labor to accumulate organic waste and complete fermentation. In addition to this, environmental problems are caused by bad odor due to generation of methane gas by anaerobic bacteria. In recent years, various fermentation and decomposition apparatuses have been proposed to reduce the labor burden, but even with such an apparatus, it is more than several tens of days to use organic waste as a mature fertilizer. However, there is still a need for an extremely long processing period.

  Under such circumstances, using a processing apparatus having a container provided with stirring equipment, the organic waste is stored in the container of this processing apparatus, and while stirring it, high-temperature and high-pressure saturated steam, That is, a technique for supplying high-temperature and high-pressure heated steam to boil (boil) organic waste has been proposed (see, for example, Patent Documents 1 and 2).

  In such organic waste treatment technology, the organic waste is simply boiled without incineration, so there are no toxic gases or harmful substances generated by incineration during the treatment process. It does not occur, and it is possible to complete the treatment in a sufficiently short time and a small labor burden as compared with the case where the fermentation treatment is performed. Moreover, since it is a treatment under high temperature and high pressure conditions, it has a sterilizing and disinfecting effect, and it can effectively suppress the generation of malodor during the treatment, as well as harmful organisms contained in organic waste. Microorganisms, as well as seeds, bulbs, rhizomes, etc. are completely killed during processing, and further, low molecular weight is promoted by hydrolysis of various substances (mainly proteins) contained in organic waste. . As a result, the organic waste after the treatment is excellent in absorption efficiency for the plant, and moreover, the microorganisms useful for the growth of the plant are easily propagated. It can be used advantageously, and can also be suitably used as a feed having a high digestion and absorption rate.

  However, the present inventors have made various studies on the conventional organic waste processing technology by ripening as described above. As a result, the high-temperature high-pressure heating steam is simply supplied into the container in which the organic waste is stored. In the conventional technology, the temperature inside the container cannot be sufficiently increased to a target temperature corresponding to the temperature of the heating steam, and therefore, sufficient ripening treatment of organic waste can be performed more quickly. It proved difficult to implement on time.

  Further, in the processing apparatus used in the conventional processing technology, the container for storing the organic waste is composed of a horizontally long drum body that gradually increases in diameter toward the center in the length direction. Since the rotating shaft with the stirring blade integrally formed is provided on the central axis of the drum body, the entire amount of organic waste in the container is sufficiently stirred while effectively using the entire container. It has also been found that it is difficult to ripen organic waste efficiently and uniformly.

  That is, in order to carry out effective stirring of organic waste in the container, in order to sufficiently turn over the organic waste by the stirring blade, there is a turning space in which no organic waste exists in the upper part of the container. It is desirable to be provided. However, in the conventional treatment apparatus, as described above, the central portion of the container is a large diameter portion, while the end portions on both sides are small diameter portions. In order to sufficiently stir, an excessive turning space is inevitably formed in the large-diameter portion, and the entire container cannot be effectively used. If a large amount of organic waste is accommodated in the container, the turnover space in the small diameter portion becomes too small, and it becomes difficult to sufficiently stir the organic waste. In addition, since the central portion of the bottom surface of the container is lower than both side end portions thereof, the organic waste is gathered and compressed at the large-diameter portion in the center. There was a risk that the mixture could not be sufficiently stirred.

Japanese Patent Application Laid-Open No. 11-18589 JP 2003-55078 A

  Here, the present invention has been made in the background of the circumstances as described above, and the problem to be solved is an organic material that can perform sufficient ripening treatment of organic waste more quickly. The object is to provide a waste processing apparatus and a processing method. Another object of the present invention is to provide a novel structure of an organic waste processing apparatus capable of efficiently and uniformly ripening organic waste.

  And in order to solve such a problem, the present inventors have various reasons for the insufficient temperature rise in the container into which the organic waste is introduced in the conventional organic waste ripening treatment technology. Various examinations were repeated from an angle. In the process, it was predicted that the air trapped inside the organic waste would hinder the temperature rise in the container. Therefore, as a result of further diligent research based on such prediction, by reducing the pressure in the container before supplying the high-temperature / high-pressure heated steam to the container into which the organic waste has been charged, The present inventors have found that the temperature inside the container in which the organic waste is introduced can be reliably increased to a target temperature corresponding to the temperature of the high-temperature and high-pressure heating steam. And based on such knowledge, this invention came to completion.

  Hereinafter, embodiments of the present invention will be described. In addition, the component employ | adopted in the aspect of the following description is employable by arbitrary combinations as much as possible. Further, aspects or technical features of the present invention are not limited to those described below, but are described in the entire specification and drawings, or an invention that can be understood by those skilled in the art from those descriptions. It should be understood that it is recognized based on thought.

  A first aspect of the present invention includes: (a) a container that is provided with a sealable inlet and outlet, and into which organic waste is introduced through the inlet, and (b) the container. Agitation means for agitating the organic waste contained in the body, (c) heating steam supply means for supplying high-temperature and high-pressure heating steam into the accommodation body, and (d) the organic waste is accommodated in the accommodation body. Pressure reducing means for reducing the pressure inside the container prior to the supply of the high-temperature and high-pressure heating steam to the container by the heating steam supply means in a state where the inlet and the outlet are sealed. An organic waste treatment apparatus including the organic waste contained in the containing body in a reduced pressure state, while stirring the organic waste contained in the containing body and bringing it into contact with the high-temperature high-pressure heating steam for ripening. Features.

  In other words, in this embodiment, the container is depressurized prior to the supply of the high-temperature and high-pressure heating steam to the container in which the organic waste is stored. By supplying the high-temperature and high-pressure heating steam into the container, the temperature in the container can be reliably increased to the target temperature. This is considered to be due to the fact that air trapped in the organic waste due to the reduced pressure in the container can be effectively discharged from the organic waste and further from the container. Then, under such a high temperature and high pressure condition, the organic waste in the container can be sufficiently and reliably ripened while being stirred.

  Therefore, according to this aspect, sufficient ripening treatment of organic waste can be performed in a shorter time. As a result, the production efficiency of the high-quality fertilizer and soil improver, which is made of organic waste that has been boiled and processed and is extremely useful for plant growth, can be effectively realized. .

  According to a second aspect of the present invention, in the organic waste treatment apparatus according to the first aspect, the container includes a cylindrical body portion extending in a horizontal direction, and both axial sides of the cylindrical body portion. The two bottom portions respectively closing the openings are integrally formed, and the stirring means is positioned so as to extend in the axial direction in the cylindrical body portion of the container, and the two bottom portions And a stirring blade provided so as to be able to rotate integrally with the rotary shaft with respect to the rotary shaft.

  According to this aspect, since the container for containing the organic waste has the same diameter over the entire length, it differs from the conventional apparatus having the container whose central part is larger in diameter than both end parts. Thus, under the condition that organic waste is contained in the container, a turn-back space of the same size is provided over the entire length of the container. The total amount of organic waste in the container can be sufficiently stirred while being used. As a result, the organic waste can be ripened more efficiently and uniformly. In addition, it can be advantageously avoided that the bottom surface of the container extends horizontally, whereby organic waste is partially biased in the container and stirring becomes difficult.

  According to a third aspect of the present invention, there is provided the organic waste treatment apparatus according to the second aspect, wherein the input port is located upward at an end portion on one axial side of the cylindrical body portion of the container. The discharge port is open toward the other end in the axial direction of the cylindrical body, and can be sealed with a lid. It is characterized by being provided. According to this aspect, the input of the organic waste into the container and the discharge from the container can be performed more easily.

  According to a fourth aspect of the present invention, in the organic waste treatment apparatus according to the third aspect, the container includes a position where the cylindrical body portion extends horizontally, and the cylindrical body portion is the input port. A position changing means that can be arbitrarily changed in position is further provided at a position inclined downward from the side toward the discharge port.

  According to this aspect, the container is positioned horizontally during the organic waste agitation processing in the container, while the container is discharged from the inlet when the organic waste is taken out from the container. It can be made to incline downward toward the exit side. Therefore, it is possible to perform the operation of taking out organic waste from the container after the stirring process more smoothly and quickly while ensuring sufficient and effective stirring of the organic waste in the container. .

  According to a fifth aspect of the present invention, in the organic waste treatment apparatus according to any one of the second to fourth aspects, the rotating shaft of the stirring means is the cylindrical shape of the container. In the body part, the body part is deviated and positioned below the central axis of the cylindrical body part.

  According to this aspect, the tip of the stirring blade protrudes from the organic waste in the turning space as described above, in which the organic waste does not exist, formed on the upper portion of the container. It can be prevented in advance that the stirring action of the organic waste is lowered, and thereby, good stirring efficiency of the organic waste by the stirring blade can be stably ensured.

  According to a sixth aspect of the present invention, in the organic waste treatment apparatus according to any one of the second to fifth aspects, in at least one of the two bottom portions of the container. The portion including at least the support portion of the rotating shaft is a rotating shaft support that is detachably attached to the body portion, and the rotating shaft support body is removed from the body portion, thereby the rotation. It is characterized in that the shaft can be removed from the housing. According to this embodiment, the rotating shaft of the stirring means and the stirring blade provided on the rotating shaft can be easily replaced.

  According to a seventh aspect of the present invention, in the organic waste treatment apparatus according to any one of the second to sixth aspects, the stirring blade in the stirring means is attached to and detached from the rotating shaft. It is characterized by being provided. According to this aspect, the stirring blades can be easily replaced.

  According to an eighth aspect of the present invention, in the organic waste treatment apparatus according to any one of the first to seventh aspects, at least one of the human body in the housing body with respect to the housing body. It is characterized in that a through hole allowing entry of the portion is provided so as to be able to be sealed. According to this aspect, the operator performs a maintenance operation inside the container, for example, a replacement operation of the stirring blade, etc., by inserting a hand or a face as needed into the container through the through hole. I can do it. ,

  According to a ninth aspect of the present invention, in the organic waste treatment apparatus according to any one of the first to eighth aspects, the high-temperature and high-pressure is accommodated in the container in the container. A cooling means for cooling the organic waste that has been ripened by contact with heated steam is further provided. According to this aspect, the organic waste that has been heated to high temperature by high-temperature and high-pressure heating steam can be quickly cooled after the ripening treatment, and the ripened organic waste can be quickly and from the container. Can be safely removed.

  A tenth aspect of the present invention includes: (a) a process of storing organic waste in a sealable container; and (b) the container in which the organic waste is stored and sealed. And (c) supplying the high-temperature and high-pressure heating steam into the container while stirring the organic waste housed in the container in the decompressed state, and the organic waste and the high-temperature and high-pressure A method for treating organic waste comprising a step of ripening the organic waste by bringing it into contact with heated steam is characterized.

  In this embodiment, the temperature inside the container in which the organic waste is stored is reliably increased to the target temperature corresponding to the temperature of the high-temperature high-pressure heating steam, The organic waste is sufficiently ripened while being stirred.

  Therefore, according to this aspect, sufficient ripening treatment of organic waste can be performed more quickly and reliably, and as a result, it is extremely useful for the growth of plants consisting of ripened organic waste. In addition, high-quality fertilizers and soil conditioners can be produced very efficiently.

  In an eleventh aspect of the present invention, in the organic waste processing method according to the tenth aspect, the boiled and processed organic waste is taken out from the container, and is exposed to the air when the organic waste is taken out. It is further characterized in that a step of completely fermenting the organic waste by incorporating the microorganism into the organic waste that has been boiled and processed is further performed.

  In this embodiment, the organic waste is sterilized and disinfected by the ripening treatment under high temperature and high pressure conditions, and the molecular weight is reduced by hydrolysis, so that the microorganisms can easily propagate. The microorganisms that are fermented and decomposed by microorganisms are then propagated and activated without being disturbed by other harmful microorganisms. Can be squeezed so that the boiled organic waste can be composted very quickly. As a result, fully-ripened compost that exhibits superior characteristics in plant absorption efficiency can be reliably produced in a very short time.

  A twelfth aspect of the present invention is the organic waste treatment method according to the tenth or eleventh aspect, wherein the organic waste that has been subjected to the ripening treatment is removed from the container before the organic waste is removed from the container. The step of cooling the waste is further performed. According to this aspect, the organic waste that has been heated to high temperature and high pressure by heating steam can be quickly and safely taken out of the container during the ripening treatment.

  As is clear from the above description, in the organic waste processing apparatus and processing method having the structure according to the present invention, after the container containing organic waste is depressurized, the high-temperature high-pressure heating steam is introduced into the container. Since it is supplied, the organic waste in the container can be sufficiently and reliably ripened while being stirred under sufficiently high temperature and high pressure conditions.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG. 1 and FIG. 2 schematically show one embodiment of an organic waste treatment apparatus having a structure according to the present invention in a front form and a side form. As is clear from these drawings, the treatment apparatus of the present embodiment is supported by the base 10 and the base 10 and contains the organic waste 12 (shown by a two-dot chain line in FIG. 1). And a container 14.

  More specifically, the base 10 is configured to further include a stationary frame 16 that is horizontally disposed and grounded, and a tilting frame 18 that is tiltably disposed on the stationary frame 16. ing. In addition, the fixed frame 16 includes a support frame portion 20 that extends horizontally with a long rectangular shape, and four leg portions 21 that are respectively erected on the lower surfaces of the four corner portions of the support frame portion 20. . Further, a hydraulic unit 22 is attached to the support frame portion 20 of the fixed frame 16 via an attachment frame 23.

  On the other hand, the tilting frame 18 has a rectangular shape that is longer than the support frame portion 20 of the fixed frame 16 and is positioned at a predetermined distance in the vertical direction, and the upper support frame portion 24 and the lower support frame that extend horizontally. The frame portion 26 includes a plurality (six in this case) of connecting strut portions 28 that are positioned so as to extend vertically between them and connect the upper and lower support frame portions 24 and 26 to each other. ing.

  The lower support frame portion 26 is placed on the support frame portion 20 of the fixed frame 16 on one end side in the longitudinal direction (left and right direction in FIG. 1), and provided on the lower surface of the other end portion. The entire tilting frame 18 is positioned horizontally by being grounded via the rotating mechanism 30. The rotating mechanism 30 is fixed to a rotating shaft 32 that extends horizontally in the longitudinal direction of the lower support frame portion 26, a support portion 34 that supports the rotating shaft, and a lower surface of the lower support frame portion 26. And a connecting portion 36 that is rotatably connected to the rotating shaft 32.

  Further, the end portion of the upper support frame portion 24 corresponding to the end portion on the mounting side on the fixed frame 16 in the lower support frame portion 26 of such a tilting frame 18, and the support frame portion 20 of the fixed frame 16. A hydraulic cylinder mechanism 38 that is protruded / retracted by the hydraulic unit 22 provided on the fixed frame 16 is disposed so as to extend in the vertical direction. The hydraulic cylinder mechanism 38 has a lower end portion of the cylinder attached to the support frame portion 20 of the fixed frame so as to be rotatable about a rotation axis extending horizontally in the width direction, and upward from the cylinder. The tip of the piston rod that extends toward the top is fixed to the upper support frame 24 of the tilting frame 18.

  Thus, when the tilting frame 18 is in a non-operating state in which the hydraulic cylinder mechanism 38 is retracted, the horizontal state is maintained, and the hydraulic pressure of the tilting frame 18 is accompanied by the protrusion operation of the hydraulic cylinder mechanism 38 by the hydraulic unit 22. The cylinder mechanism 38 side (left side in FIG. 1) is pushed upward. Thereby, the tilting frame 18 is rotated around the rotation shaft 32 of the rotation mechanism 30, and the rotation mechanism 30 is moved from the end portion (left end portion in FIG. 1) on the attachment side of the hydraulic cylinder mechanism 38. It is made to incline so that it may incline toward the edge part (right side edge part in FIG. 1) of the installation side (refer FIG. 4). Further, the tilting frame 18 is returned to the horizontal state before tilting by the pulling-in operation of the hydraulic cylinder mechanism 38 from such a state.

  On the other hand, the container 14 is manufactured using a heat-resistant steel plate, and has a horizontally long tank shape as a whole. In the cylindrical body 40 extending with the same diameter, the cylindrical body 40 is provided. It has two bottom portions 42a and 42b on the left and right sides that respectively close the openings on both sides in the axial direction (the left-right direction in FIG. 1 and hereinafter referred to as the left-right direction).

  And in this accommodating body 14, it is located on the tilting frame 18 in the base 10 in parallel (horizontally) with it, and the two leg parts 41 integrally formed in the lower outer surface of the trunk | drum 40, 41 is fixed to the upper support frame portion 24 of the tilting frame 18. Thus, the container 14 is also maintained in a horizontal state when the hydraulic cylinder mechanism 38 is in a non-operating state, while the left bottom portion 42a is accompanied by the tilting of the tilting frame 18 due to the protruding operation of the hydraulic cylinder mechanism 38. It can be tilted so as to tilt downward from the side toward the right bottom portion 42b (see FIG. 4). Then, with the return of the tilting frame 18 to the horizontal state due to the retracting operation of the hydraulic cylinder mechanism 38 from such a state, the horizontal state before the tilting can be returned.

  In such a container 14, the left bottom 42 a of the two bottoms 42 a and 42 b is formed integrally with the body 40, but the right bottom 42 b is separated from the body 40. The body part 40 is detachably attached.

  In other words, here, an annular plate-like outer flange 43 is integrally provided around the outer peripheral edge of the right opening of the body 40 integrated with the left bottom 42a. The right bottom part 42b, which is a separate body from the body part 40, has a shallow bowl shape, and is integrally formed with the body part 40 also at the outer peripheral edge of the opening of the right bottom part 42b. An annular plate-like outer flange portion 44 similar to the outer flange portion 43 is integrally provided.

  Then, the opening end surface of the right side bottom portion 42b and the outer flange portion 44 and the opening end surface of the body portion 40 and the outer flange portion 43 are abutted with each other, so that the right side opening portion of the body portion 40 is at the right bottom portion 42b. Covered. In such a state, the outer flange portions 44 and 43 are bolted to each other so that the right bottom portion 42b is attached to the body portion 40, and such an attachment state is favorable under high pressure conditions. Can be maintained. Further, from the state in which the right bottom portion 42b is attached to the body portion 40, the bolt fixing between the outer flange portions 44.43 is eliminated, so that the right bottom portion 42b can be easily detached from the body portion 40. It has become.

  Here, a heat-resistant seal member (not shown) is interposed between the butted surfaces of the outer flange portions 44 and 43, so that the right bottom portion 42b is attached to the body portion 40. The liquid-tightness and the air-tightness at the attachment site between the right-side bottom part 42b and the body part 40 are ensured.

  Further, in the body portion 40 of the container 14 having such a structure, a loading port 45 opening upward is provided at an upper portion of the end portion on the left bottom portion 42a side, while the right bottom portion 42b. A discharge port 46 that opens downward is provided in a lower part of the end portion on the side. In other words, when the container 14 is tilted with the tilting of the tilting frame 18 by the projecting operation of the hydraulic cylinder mechanism 38 as described above, it is inserted into the end portion side of the body portion 40 positioned on the upper side. A port 45 is provided, and a discharge port 46 is provided on the end side of the body 40 that is positioned on the lower side. In other words, the hydraulic cylinder mechanism 38 and the tilting frame 18 allow the container 14 to be arbitrarily positioned between a position where the container 14 extends horizontally and a position where the body 40 tilts downward from the inlet 45 toward the outlet 46. The position can be changed. As is clear from this, here, the hydraulic cylinder mechanism 38 and the tilting frame 18 constitute position changing means.

  The charging port 45 is connected to a charging duct 48 extending upward by a predetermined height. In the charging duct 48, a hopper 50 for storing the organic waste 12 to be treated is provided at the tip thereof, and the charging port 45 is closed in a fluid-tight manner at an intermediate portion in the extending direction. A possible known ball valve 52 is provided. On the other hand, a discharge duct 54 extending to a predetermined height downward is connected to the discharge port 46, and the discharge port 46 can be closed fluid-tightly at an intermediate portion in the extending direction of the discharge duct 54. The ball valve 56 is provided. The ball valves 52 and 56 provided in the input duct 48 and the discharge duct 54 can be easily opened and closed by the rotary handles 58 and 60 provided in them.

  Thereby, here, the ball valve 52 of the input duct 48 is opened by the rotary handle 58 under the closed operation state of the ball valve 56 of the discharge duct 54, whereby the organic waste stored in the hopper 50 is stored. The object 12 is thrown into the container 14 through the charging duct 48 and the charging port 45 so as to be stored. In addition, the organic waste in the container 14 is opened by the ball valve 56 of the discharge duct 54 being opened by the rotary handle 60 in a state in which the organic waste 12 is accommodated in the container 14. 12 can be discharged to the outside of the container 14 through the discharge port 46 and the discharge duct 54. At that time, the tilting frame 18 is tilted, and the container 14 is tilted so as to tilt downward from the inlet 45 side toward the outlet 46 side. It is configured to make it easier to discharge. Furthermore, when the organic waste 12 is stored and the ball valves 52 and 56 of the input duct 48 and the discharge duct 54 are closed, the internal space of the container 14 is fluid-tightly sealed. In addition, it can sufficiently withstand the increase and decrease of the internal pressure. As is clear from this, here, a lid for sealing the inlet 45 and the outlet 46 is constituted by the ball valves 52 and 56 respectively attached to the inlet duct 48 and the outlet duct 54. .

  In addition, a manhole 62 as a through hole is provided in an intermediate portion in the axial direction of the body portion 40 of the container 14 so as to penetrate therethrough. The manhole 62 has a circular shape that allows a person's upper body to pass through. A cylindrical portion 64 surrounding the manhole 62 is integrally formed on the peripheral edge of the manhole 62 on the outer peripheral surface of the body portion 40 so as to extend laterally. A hatch 66 is attached to open and close the cover.

  As a result, the manhole 62 can be arbitrarily opened and closed by opening and closing the hatch 66. In particular, when the hatch 66 is opened, an operator or the like enters the upper body through the manhole 62 into the housing 14. At least, it is possible to work in the container 14. The hatch 66 is brought into close contact with the opening end surface of the cylindrical portion 64 through a heat-resistant seal member (not shown) in a state where the tip opening portion of the cylindrical portion 64 is covered. Therefore, the manhole 62 is configured to be fluid-tightly sealed by closing the hatch 66. Further, in the closed state, the hatch 66 is bolted to the opening end surface of the cylindrical portion 64, so that the closed state of the hatch 66 is increased or decreased with respect to the internal pressure of the container 14. It can be reliably maintained.

  In the present embodiment, in particular, the steam injection pipe 68 is attached to the upper part of the right bottom part 42b of the container 14 so as to penetrate the part. That is, the steam injection pipe 68 is formed of a cylindrical tube having a relatively short length and a thin diameter, and has one end portion in the length direction protruding into the housing 14, and the opening on the one end portion side is formed. While the container 14 is opened, it is positioned with the opening on the other end opened to the outside. A steam generator 70 such as a boiler that generates high-temperature and high-pressure heated steam is connected to an opening-side end portion of the steam injection pipe 68 via a steam circulation pipe 72.

  Thus, the high-temperature and high-pressure heating steam generated by the steam generator 70 is guided to the steam injection pipe 68 through the steam flow pipe 72 and is received from the opening of the steam injection pipe 68 into the container 14. It is sprayed into the body 14 and supplied. And thereby, the inside of the container 14 is brought to a high temperature and high pressure state, and the high temperature and high pressure heating steam is brought into contact with the organic waste 12 accommodated in the container 14, Such organic waste 12 is boiled (steamed). As is clear from this, in this embodiment, the steam injection pipe 68, the steam flow pipe 72, and the steam generator 70 constitute a heating steam supply means. Although not shown, the body 40 is equipped with a known pressure gauge and thermometer. And the pressure and temperature inside the container 14 are detected by these pressure gauges and thermometers.

  Here, three independent vent pipes 75a, 75b, and 75c are provided in the upper portion of the body portion 40 of the container 14. The inner end portions of these three vent pipes 75a, 75b, and 75c are all opened to communicate with the interior of the housing 14. An exhaust valve 77 is attached to the outer opening of one vent pipe 75a. A safety valve 74 is attached to the outer opening of another vent pipe 75b. Further, an opening / closing valve 76 is attached to the outer opening of another vent pipe 75c. In the drawing, the vent pipes 75a and 75b are both opened directly into the atmosphere via the safety valve 74 or the exhaust valve 77, but in the opening, there are a silencer and a deodorizer. Etc. are installed.

  The safety valve 74 is normally closed. However, when the internal pressure of the container 14 becomes abnormally high, the safety valve 74 is opened by receiving an abnormal signal from a pressure sensor (not shown). Safety is ensured by releasing abnormal pressure. The exhaust valve 77 is opened and closed as the ripening process described later proceeds, and the internal space of the container 14 is shut off from the atmosphere with the exhaust valve 77 closed to reduce the pressure. While the state can be maintained in a state or a high pressure state, by opening the exhaust valve 77, the internal pressure of the container 14 can be released into the atmosphere and returned to the atmospheric pressure.

  In addition, an intake pipe 80 is connected to the vent pipe 75c via an on-off valve 76, and a decompression pump 78 such as a vacuum pump having a known structure is connected by the intake pipe 80. As a result, in the state where the on-off valve 76 is opened, the air in the container 14 is discharged to the outside through the vent pipe 75c and the intake pipe 80 in accordance with the operation of the decompression pump 78, and the internal pressure of the container 14 Can be reduced. As is clear from this, in the present embodiment, the pressure reducing means is configured to include the vent pipe 75c, the intake pipe line 80, and the pressure reducing pump 78. Here, the amount of pressure reduction by the operation of the pressure reducing pump 78 can be performed by adjusting the output of the pressure reducing pump 78. Such output adjustment may be performed manually, but is automatically controlled so as to obtain a preset target pressure reduction value based on the detected value of the pressure in the container 14. When the target pressure reduction value is reached, the pressure reduction pump 78 is stopped and the on-off valve 76 is closed to shut off the pressure reduction pump 78 from within the container 14. This prevents leakage to the decompression pump 78 when the high-temperature and high-pressure steam is subsequently introduced into the container 14. In addition, an on-off valve is mounted on the pipe line (steam flow pipe 72 or steam injection pipe 68) connecting the steam generator 70 in the container 14 as necessary, and is accommodated by the operation of the decompression pump 78. When the inside of the body 14 is depressurized, the on-off valve is closed to completely prevent pressure from entering the container 14 from the steam generating device 70 during decompression, or to efficiently depressurize.

  On the other hand, a rotating shaft 82 is arranged inside the container 14. The rotating shaft 82 is disposed over substantially the entire length in the axial direction of the container 14. The rotating shaft 82 is extended horizontally in the axial direction across the inside of the housing 14 at a position where the predetermined dimension is deviated downward from the central axis of the housing 14, and the left bottom 42 a of the housing 14. The shafts are pivotally supported by the left and right bottom portions 42a and 42b in a state of penetrating the right bottom portion 42b and projecting both end portions to the outside.

  That is, here, the through hole 84 is provided at a position that is deviated by a predetermined dimension below the center of each of the left and right bottom portions 42a and 42b. A heat-resistant packing bush 86 is inserted and fixed in each through hole 84. A support frame 88 is fixed to the outer surfaces of the bottom portions 42 a and 42 b so as to surround the packing bush 86. Each end of the rotary shaft 82 is slidably inserted through the inner hole of each packing bush 86 and supported by each support frame 88 via a bearing. As a result, the rotary shaft 82 is in contact with the left and right bottom portions 42a, 42b in a state in which the airtightness, liquid tightness, and pressure resistance at the insertion portion of the rotary shaft 82 in each bottom portion 42a, 42b are sufficiently secured. It is supported rotatably.

  As described above, in the present embodiment, since the one end portion of the rotating shaft 82 is supported by the right bottom portion 42b detachably attached to the body portion 40 of the container 14, the rotating shaft 82 is provided. By removing the right bottom part 42b from the body part 40 in the supported state, the rotary shaft 82 can be detached from the housing body 14 together with the right bottom part 42b. As is clear from this, here, the rotating shaft support is constituted by the right bottom portion 42b.

  Thus, spur gears 85, 85 are provided at the tip portions of the both ends of the rotating shaft 82 that protrudes outward through the container 14 while being supported by the left and right bottom portions 42a, 42b. Are attached to each. Further, these spur gears 85, 85 are arranged on both sides of the housing 14 so as to extend in parallel with the spur gears 85 and 85 at both ends of an interlocking rotation shaft 87 rotatably supported by the tilt frame 18 of the base 10. The interlocking gears 89 and 89 to be attached are meshed with each other. Further, a sprocket 90 is attached to the end of the end portion of the rotating shaft 82 that protrudes outward from the left bottom portion 42a. The sprocket 90 is connected via a chain 94 to a rotation shaft of a drive motor 92 fixed to the tilt frame 18 of the base 10.

  As a result, the rotation shaft 82 is rotated as the drive motor 92 rotates. Further, when the rotary shaft 82 rotates, the rotary shaft 82 is sufficiently moved from both ends by the rotation of the spur gears 85, 85 at both ends thereof, the interlocking gears 89, 89 meshing with the spur gears 85, and the interlocking rotary shaft 87 to which the spur gears are attached. Rotational torque can be applied. Thereby, the rotational driving force can be transmitted to the rotary shaft 82 while suppressing a large torsional stress.

  On the other hand, a plurality of plate-like mounting plates 96 having a predetermined length have a phase difference of 90 ° in the circumferential direction on the outer peripheral surface of the axially intermediate portion arranged in the container 14 in the rotating shaft 82. And are integrally erected so as to protrude outward in the radial direction at positions having a certain distance in the axial direction. Then, one stirring blade 98 is attached to the tip of each of the attachment plates 96. Each of the stirring blades 98 is a substantially crescent-shaped flat plate, curved and extended in one direction around the rotation shaft 82, and is positioned slightly twisted on one side in the axial direction of the rotation shaft 82. In this state, at one end in the length direction, a bolt is fixed to the tip of each mounting plate 96. In addition, in the middle portion of each mounting plate 96 in the length direction, a thin flat fin 99 that assists the stirring blade 98 is perpendicular to one surface of each mounting plate 96. In addition, it is erected integrally.

  Accordingly, each stirring blade 98 is attached so as to be easily removable from the rotary shaft 82, and can be rotated integrally with the rotary shaft 82 as the drive motor 92 is driven to rotate. As will be described later, the organic waste 12 can be efficiently and reliably removed by being rotated integrally with the rotary shaft 82 together with the fins 99 in a state where the organic waste 12 is contained in the container 14. Can be stirred. As is clear from this, here, the rotating shaft 82, the plurality of stirring blades 98, the sprocket 90, the chain 94, and the drive motor 92 constitute stirring means.

  Thus, when organic waste is processed using the processing apparatus of this embodiment having such a structure, for example, the operation is performed according to the following procedure.

  That is, first, the organic waste 12 to be treated is prepared. Here, the organic waste 12 is discharged from, for example, a factory that performs various businesses such as agriculture, forestry, livestock, fisheries, or food processing. Rice husk, straw, grass, wood waste, saw blade waste, livestock manure, dead fish, ara, shell, paper waste, vegetable waste Food waste, organic sludge and the like from waste water are prepared as the organic waste 12 to be treated.

  When the organic waste 12 is prepared, the rotary shaft 82 and the plurality of stirring blades 98 are integrally rotated by the rotational drive of the drive motor 92 in a state where the container 14 is positioned horizontally. The opening 45 is opened by opening the ball valve 52. At this time, the ball valve 56 of the discharge duct 54 remains closed, and the discharge port 46 is closed.

  Next, the prepared organic waste 12 is put into the hopper 50, and the organic waste 12 is further put into the container 14 from the hopper 50 through the insertion port 45. At this time, the organic waste 12 thrown into the container 14 by the rotation of the plurality of stirring blades 98 and the plurality of fins 99 passes through the container 14 from the inlet 45 side toward the opposite side. It is moved gradually. Then, a desired amount of the organic waste 12 is put into the container 14 and stored.

  The amount of the organic waste 12 introduced into the container 14 is appropriately determined according to the volume of the container 14, but preferably, as indicated by a two-dot chain line in FIG. In a state where the entire amount of the organic waste 12 is put into the container 14, each stirring blade 98 is not protruded from the surface (upper surface) of the organic waste 12, and the organic waste 12 A turnover space 100 for turning over the organic waste 12 stirred by the rotation of each stirring blade 98 is provided between the surface and the inner surface of the body portion 40 of the container 14 over the entire length of the container 14. It is desirable that the amounts are substantially the same and can be formed with a sufficient size.

  When a predetermined amount of the organic waste 12 is put into the container 14, the ball valve 52 of the charging duct 48 is closed to close the charging port 45. Thereby, the inside of the container 14 is completely sealed from the outside. Thereafter, the decompression pump 78 is operated, and the air inside the container 14 and further the air inside the organic waste 12 housed in the container 14 are sucked through the on-off valve 76 to decompress the inside of the container 14. To do.

  In this decompression operation, the value measured by the pressure gauge installed in the body portion 40 of the container 14 is preferably in the range of about 40 to 80 Torr, more preferably about 50 to 70 Torr, and even more preferably about 60 Torr. Continue until And if the pressure in the container 14 becomes a value within such a range, the reduced pressure state is maintained. During the decompression operation, the rotation of the rotating shaft 82 and the stirring blades 98 driven by the drive motor 92 may be stopped as necessary.

  Next, after reducing the inside of the container 14 to a desired pressure, if the drive motor 92 is continuously driven, it is left as it is, and if it is stopped, it is driven again so that the rotation shaft The organic waste 12 in the container 14 is agitated by the stirring blades 98 that are rotated together with 82 and the fins 99. Then, under such an agitation state of the organic waste 12, the high-temperature and high-pressure heating steam generated by the steam generator 70 is guided to the container 14 side by the steam flow pipe 72, and the steam injection pipe 68. The container 14 is sprayed into the container 14 to bring the container 14 into a high-temperature and high-pressure state, and the high-temperature high-pressure heated steam is brought into contact with the stirred organic waste 12. Thus, the organic waste 12 in the container 14 is boiled.

In carrying out the ripening treatment for the organic waste 12, the temperature of the high-temperature high-pressure heating steam sprayed into the container 14 from the steam spray pipe 68 is, for example, preferably about 150 to 250 ° C., more preferably 180. ˜220 ° C. Moreover, the injection of the high-temperature high-pressure heating steam, the pressure in the container 14 is preferably 10~30kgf / cm ^2, more preferably about 15~25kgf / cm ² or so, more preferably 18~22kgf / cm ² of about The value is within the range of. Furthermore, when the pressure in the container 14 rises more than necessary during such ripening treatment, it is automatically controlled based on the detection value of the pressure sensor to release the heating steam from the safety valve 74, The pressure in the container 14 is adjusted so as to be maintained at a value within the above range. At this time, since a silencer and a deodorizer are mounted on the open side of the safety valve 74, environmental problems are avoided and work safety is ensured.

  Then, the ripening treatment of the organic waste 12 is such that the air trapped in the organic waste 12 is reduced in the organic waste 12 by the depressurization operation in the container 14 performed prior thereto. Since it is carried out in a state of being discharged from the inside of the container 14, for example, the temperature inside the container 14 is compared with the case of injecting high-temperature and high-pressure heating steam into the container 14 without performing such a decompression operation. Such high temperature and high pressure heating steam can be efficiently increased. Thereby, the ripening treatment of the organic waste 12 can be performed more sufficiently and reliably.

  In addition, here, in addition to the amount of the organic waste 12 introduced into the container 14 being an appropriate amount, the rotating shaft 82 is below the center of the cylindrical body 40 in the container 14. It has been offset. Therefore, the plurality of stirring blades 98 that are rotated together with the rotating shaft 82 are not protruded from the surface of the organic waste 12 and are stirred by the rotation of the stirring blades 98 in the upper part of the container 14. A turn-back space 100 for turning back the organic waste 12 is formed with the same and sufficient size over the entire length.

  Accordingly, in the ripening treatment of the organic waste 12 performed in this operation, the entire amount of the organic waste 12 in the container 14 is rotated while the entire container 14 is effectively used. Can be sufficiently stirred. In addition, since the container 14 is positioned horizontally, the inner peripheral surface of the cylindrical body portion 40 serving as the bottom surface of the container 14 is also arranged so as to extend horizontally. When the organic waste 12 is agitated by the plurality of agitating blades 98, it is eliminated that the organic waste 12 is partially biased in the container 14, and therefore it is not difficult to agitate due to that. . Furthermore, since the organic waste 12 does not incinerate the organic waste 12, no toxic gas or harmful substances such as dioxin are generated during the treatment. Since it is a treatment under high pressure conditions and does not require a decomposition action by microorganisms, no bad odor due to spoilage bacteria is generated.

  And this ripening process is generally performed continuously for about 30 to 60 minutes, and in many cases about 40 to 50 minutes, and is complete | finished when this time passes. The ripening treatment time is appropriately adjusted according to various conditions such as the state of the treatment object, treatment temperature, and humidity, and is not particularly limited. Further, in addition to continuously performing, the processing may be performed intermittently or intermittently.

  Next, when the ripening process is completed, the entire amount of the high-temperature and high-pressure heating steam is discharged from the exhaust valve 77 to return the inside of the container 14 to atmospheric pressure. On the other hand, if necessary, the container 14 and the organic waste 12 that has been stored and boiled in the container 14 are allowed to cool for a predetermined time. Even during this cooling operation, the stirring operation of the organic waste 12 by the rotation of the stirring blade 98 is preferably continued.

  Thereafter, as shown in FIG. 4, the hydraulic cylinder mechanism 38 is operated to project and the tilt frame 18 is tilted to tilt the container 14 downward from the inlet 45 side toward the outlet 46 side. Tilt to the position. Subsequently, the ball valve 56 of the discharge duct 54 is opened while the stirring blade 98 is still rotated. As a result, the organic waste 12 that has been boiled is discharged to the outside through the discharge port 46. At this time, since the container 14 is tilted downward, the discharge of the organic waste 12 from the discharge port 46 can be performed more smoothly. Further, if the stirring blade 98 is kept rotating, the organic waste 12 in the container 14 is gradually moved toward the discharge port 46 by the gravitational action due to the drop, and along with this, the organic waste 12 The waste 12 can be taken out from the outlet 46 more easily. In the operation of taking out the organic waste 12 as described above, preferably, the stirring operation of the organic waste 12 by the rotation of the stirring blade 98 is continued. By rotating the stirring blade 98 while the container 14 is inclined, the organic waste 12 can be discharged more efficiently using gravity.

  In this way, a predetermined amount of the ripened organic waste 12 can be obtained with certainty. Since the organic waste 12 that has been boiled and processed as described above is processed under high temperature and high pressure conditions, it is sterile, and seeds, bulbs, rhizomes, etc. are completely removed during the processing. In addition, various substances contained in the organic waste 12, particularly proteins, are hydrolyzed to reduce the molecular weight. Therefore, the ripened organic waste 12 can be used very advantageously as it is as a high-quality fertilizer and soil improver, and can also be suitably used as a feed having a high digestive absorption rate. It is.

  Moreover, the organic waste 12 that has been subjected to such ripening treatment takes in microorganisms present in the atmosphere that are naturally touched when discharged from the container 14, and is fermented and decomposed by the action of the microorganisms in the atmosphere. It will be. That is, the organic waste 12 that has been boiled is simply deposited in an appropriate location for several days (it may be turned over as needed), and the fully matured compost is produced by the action of microorganisms taken from the air. It can be done. This fermentation and decomposition treatment is completed by exposing it to the atmosphere and leaving it for several days, and it is not necessary to add and mix other bacteria. However, it is not outside the scope of the present invention to add other appropriate bacteria as needed.

  In such fermentation and decomposition treatment of the organic waste 12, since the organic waste 12 has already been sterilized by the ripening treatment, when a predetermined fermentative bacterium such as a yeast is deposited on the organic waste 12, It will be able to reproduce at once without being disturbed by harmful bacteria and microorganisms that inhibit its activities. Therefore, the fermentation and decomposition treatment of the organic waste 12 may be performed, for example, preferably for several days to several weeks, and more preferably for about 6 to 10 days. It will be gained advantageously.

  As described above, in the present embodiment, in a state where the organic waste 12 is accommodated, the inside of the container 14 is depressurized, and then the high-temperature and high-pressure heating steam is injected into the container 14, so From the place where the ripening treatment is performed, sufficient ripening treatment of the organic waste 12 can be carried out in a shorter time, thereby improving the quality fertilizer, soil improver, or absorption efficiency. Excellent feed and the like can be produced.

  Therefore, according to this embodiment, the organic waste 12 that has been boiled and processed is extremely useful for plant growth, and is a high-quality fertilizer and soil conditioner, and further improved the production efficiency of excellent feed, It can be effectively realized.

  In the present embodiment, when the organic waste 12 is ripened, the stirring operation for the organic waste 12 is carried out extremely reliably and efficiently while effectively using the entire interior of the container 14. Thereby, the ripening treatment of the organic waste 12 can be carried out more uniformly and more efficiently, so that even higher-quality fertilizers, soil improvers, and excellent feed efficiency can be obtained. Production can be achieved more reliably.

  Furthermore, in the present embodiment, by further performing fermentation and decomposition treatment on the organic waste 12 that has been boiled and treated, an excellent fully-ripened compost can be obtained easily and reliably in a very short period of time. Therefore, the productivity of excellent mature compost can also be effectively increased.

  Further, in the present embodiment, a plurality of stirring blades 98 for stirring the organic waste 12 accommodated in the container 14 are detachably attached to the rotating shaft 82, and the rotating shaft 82 includes the rotating shaft 82. The right bottom part 42a of the container 14 can be easily removed from the container 14 together with the right bottom part 42a, and the operator can pass the upper body through the container 14 in addition. A manhole 62 is provided for enabling the work in the container 14. Therefore, the replacement of the stirring blade 98 and other maintenance work can be performed very easily.

  The specific configuration of the present invention has been described in detail above. However, this is merely an example, and the present invention is not limited by the above description.

  For example, a fluid channel through which a cooling fluid, a heating fluid, or the like can flow may be provided around the container 14. Accordingly, during the ripening treatment of the organic waste 12, the container 14 is heated from the outside by circulating high-temperature heating steam in the fluid flow path, and the organic waste 12 in the container 14 is heated. Heating can be assisted, and when the organic waste 12 is cooled after such ripening treatment, a cooling fluid (cooling medium) such as cooling water is circulated in the fluid flow path, thereby The organic waste 12 in the container 14 can be forcibly cooled by cooling from the outside. That is, here, the cooling means is constituted by this fluid flow path.

  In addition, the specific structures of the container, the stirring means, the heating steam supply means, and the decompression means provided in the processing apparatus are not limited to those exemplified in the embodiment. It is.

  In addition, although not enumerated one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

It is front explanatory drawing including one part cutaway figure which shows one Embodiment of the processing apparatus of the organic waste according to this invention. It is left side explanatory drawing of the processing apparatus shown by FIG. It is the elements on larger scale in the III-III cross section of FIG. It is a figure for demonstrating the use condition of the processing apparatus shown by FIG. 1, Comprising: In order to take out the organic waste accommodated in the container, the state which tilted the container is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 Organic waste 14 Container 38 Hydraulic cylinder mechanism 40 Body part 42 Bottom part 45 Input port 46 Outlet port 52,56 Ball valve 62 Manhole 68 Steam injection pipe 70 Steam generator 72 Steam distribution line 74 Safety valve 75 Vent pipe 76 Open / close valve 77 Exhaust valve 78 Pressure reducing pump 80 Intake line 82 Rotating shaft 90 Sprocket 92 Drive motor 94 Chain 98 Stirring blade

Claims (12)

A container that is provided with a sealable inlet and outlet, and into which organic waste is introduced and accommodated through the inlet;
Stirring means for stirring the organic waste housed in the container;
Heating steam supply means for supplying high-temperature and high-pressure heating steam into the container;
Prior to the supply of the high-temperature and high-pressure heating steam into the container by the heating steam supply means in a state where the organic waste is stored in the container and the inlet and the outlet are sealed. A decompression means for decompressing the container;
The organic waste contained in the container in a reduced pressure state is brought into contact with the high-temperature and high-pressure heated steam while being agitated, and the organic waste contained in the container is ripened. Material processing equipment.   The container integrally includes a cylindrical body portion extending in the horizontal direction and two bottom portions respectively closing the openings on both axial sides of the cylindrical body portion, and the stirring means The rotary body is positioned so as to extend in the axial direction in the cylindrical body portion of the container, and the rotary shaft is supported on each of the two bottom portions, and the rotary shaft is integrally rotatable with the rotary shaft. The processing apparatus of the organic waste of Claim 1 comprised including the stirring blade provided in.   The inlet is provided at the end of one side of the cylindrical body of the container in the axial direction so as to open upward and be sealed with a lid, while the outlet is provided with the cylindrical shape. The organic waste processing apparatus according to claim 2, which is provided at an end portion on the other axial side of the body portion so as to open downward and be sealed with a lid.   The container can be arbitrarily repositioned into a position where the cylindrical body portion extends horizontally and a position where the cylindrical body portion tilts downward from the input port side toward the discharge port side. The organic waste processing apparatus according to claim 3, further comprising position changing means.   5. The rotating shaft of the stirring means is positioned in the cylindrical body portion of the container so as to be deviated downward from the central axis of the cylindrical body portion. The organic waste processing apparatus according to any one of the above.   A portion including at least one of the support portions of the rotating shaft in at least one of the two bottom portions of the container is a rotating shaft support that is detachably attached to the body portion, and the rotation is performed. The organic material according to any one of claims 2 to 5, wherein the rotating shaft can be detached from the housing body by removing the shaft support from the body portion. Waste treatment equipment.   The organic waste treatment apparatus according to any one of claims 2 to 6, wherein the stirring blade in the stirring means is detachably provided to the rotating shaft.   The through-hole which accept | permits at least one part of the human body to enter into this container is provided in the said container so that sealing is possible. Organic waste treatment equipment.   The cooling means for cooling the said organic waste which was accommodated in the said container and was ripened by the contact with the said high temperature / high pressure heating steam is further provided in the said container. Item 9. The organic waste processing apparatus according to any one of Items 8 to 8. Storing organic waste in a sealable container; and
A step of decompressing the container in which the organic waste is housed and sealed; and
While stirring the organic waste housed in the container in the decompressed state, supplying high-temperature high-pressure heating steam into the container, and contacting the organic waste and the high-temperature high-pressure heating steam, Boil ripening the organic waste;
A method for treating organic waste, comprising:   The organic waste that has been subjected to the ripening treatment is taken out from the container, and microorganisms in the air that are touched during the removal are taken into the organic waste that has been ripened to completely ferment the organic waste. The method for treating organic waste according to claim 10, wherein the step of performing further is performed. The method for treating organic waste according to claim 10 or 11, wherein a step of cooling the organic waste after the ripening treatment is further performed before taking out the organic waste from the container.

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