KR100736267B1 - The system for sterilizing and recycling of organic waste by using the saturated and overheated vapor - Google Patents

Abstract

      Organic waste such as plastic film, food waste, agricultural, livestock and marine products, and sewage sludge can be sterilized, carbonized, and treated with natural saturated substances using predetermined saturated steam and dry steam (also called dry steam). In order to provide a treatment apparatus capable of selective extraction, the stirring shaft is configured to be lower than the central axis of the pressure vessel, and an organic waste inlet is formed on the upper surface of either eccentric pressure vessel in a direction orthogonal to the axial direction of the stirring shaft. , The workpiece to be dropped or dropped from the inlet is agitated by an inclined fork-shaped stirring blade having a structure facing the outlet of the lower center portion of the pressure vessel, and prevents pressure leakage and leakage gas (liquid) between the stirring shaft and the pressure vessel. A stirring shaft cylinder for processing is constructed, and the stirring shaft protruding out of the pressure vessel is connected to the drive source by a cupping structure detachable from the driving source. .

Organic waste, steam, pressure vessels, agitation

Description

Organic waste treatment device using steam {The system for sterilizing and recycling of organic waste by using the saturated and overheated vapor}

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the organic waste processing apparatus which shows an example of embodiment of this invention.

Figure 2 is an example showing the structure of the stirring blades configured in the pressure vessel, the angle between adjacent stirring blades is 180 degrees.

3 is a right side view (A-A in FIG. 2) inside the pressure vessel, which is another example in which the angle between adjacent stirring vanes is configured at 90 degrees.

4 is a perspective view showing an example of a stirring blade configured with a tooth;

Fig. 5 is a partial sectional view showing a pressure leakage preventing mechanism between the stirring shaft and the pressure vessel.

Fig. 6 is a partial cross-sectional view showing a conventional stirring shaft, a fastening mechanism of the drive unit, and a pressure leakage preventing mechanism.

<Description of the code>

1, 31: pressure vessel 2, 20: stirring shaft

3: motor 4: cupping

5: reducer 7: tooth

6, 6a, 6b, 6c, 6d, 8a, 8b, 8c, 8d, 33a, 33b: stirring blade

9: Connection piping group such as air supply and exhaust, temperature and pressure sensor

10: Inlet 11: Outlet

12: hook 13: door in container

14: stirring wing shaft

21a: bearing 21b: bearing housing

22: stirring shaft support (bearing set) 23: stirring shaft cylinder

24: gasket

25a: backup ring 25b: adapter ring

26: Packing 27: O-ring

29a, 29b: packing gland 30: stirring shaft support

32: power transmission chain (belt) 40: stirring shaft cylinder fixing bolt

41: Packing press adjustment nut

42a: cooling water (air) inlet 42b: cooling water (air) outlet

The present invention relates to organic wastes such as food wastes, agricultural, livestock and marine wastes, sewage sludge, and plastics, such as saturated steam or dry steam (hereinafter referred to as saturated steam) at a predetermined pressure (˜3 MPa) and temperature (˜800 ° C.). It relates to an organic waste treatment apparatus which can be sterilized, partially carbonized and carbonized in a short time using dry steam.

Conventionally, Japanese Patent No. 3718834, Japanese Patent No. 3089543, and Japanese Patent Application Laid-Open No. 2004-130235 are disclosed in an apparatus and a method for treating organic matter using predetermined steam. In addition, Japanese Patent No. 3718834 is a pressure leakage preventing mechanism in a container, in which the conventional method shown in FIG. 6, that is, the packing 26 is inserted between the pressure vessel 31 and the stirring shaft 20, and the packing is pressed. In order to improve problems such as pressure leakage caused by supporting plate 29, frequent packing change due to high packing wear rate, lowering device operation rate, and difficulty in changing packing, a non-contact mark net ring is introduced. Patent No. 3089543 and Japanese Patent Application Laid-Open No. 2004-130235 are methods for facilitating movement of a processed product toward a discharge port in a container, and the pressure vessel has a barrel shape in which a cylindrical center portion and an end cone are combined. As the shape of the stirring blade, a stirring support shaft 20 and a T-shaped plate shape 33a to circular arc shape 33b are introduced.

However, the mechanism of the above-mentioned non-contact type mark net ring for preventing pressure leakage has a complicated manufacturing cost, and the suitability and economy of the large pressure device are questioned. In the case of the barrel pressure vessel, the end of the container is conical. It is not possible to maximize the storage of the object in the container, and the stirring blades of the plate or arc shape also set the stirring axis at the center of the container, so that the rotor blade reaches the upper part of the pressure vessel when stirring, and thus the pressure vessel and It causes damage such as contacting or infiltrating foreign matter under treatment with related supply / exhaust pipe and gauge for observing the temperature and pressure in the container, and the amount of material to be processed in the container is also roughly 1/2 of the container volume. The throughput is very low, and even when you want to discharge the treated discharge. Since in the floor, such as process water onto please press around the outlet or discharge accumulated is delayed is often encountered if at all impossible. In addition, as a common structure of the above-described inventions, the inlet of the pressure vessel is installed at the apex at the center of the vessel, which causes a slight collision with the agitator shaft located at the center of the vessel when the object is injected into the vessel, thereby causing the stirring shaft and the vessel. It is a great damage to the packing of the pressure leakage prevention mechanism configured in between.

Therefore, in the present invention, as a method for solving the above-mentioned problems in the construction of an apparatus for treating organic waste by using steam, a cylindrical pressure vessel capable of maximally accommodating an object to be treated, Improvements in the configuration, the position of the stirring shaft, the shape of the stirring blades, the stirring method, the pressure leakage preventing mechanism, and the like are the technical problems.

       EMBODIMENT OF THE INVENTION Hereinafter, the structure and effect | action of this invention are demonstrated with reference to drawings.

FIG. 1 shows a front view of an organic waste treatment apparatus of an exemplary embodiment of the present invention excluding a boiler and a heater, and FIG. 2 shows a stirring blade 6a in which the to-be-processed object accommodated in the pressure vessel 1 is stirring toward the outlet 11. 6b, 6c, and 6d) is an example in which 180 degrees between adjacent stirring blades and stirring blades is configured. FIG. 3 is a right side view of the pressure vessel of the present invention for illustrating the position of the stirring shaft 2 in the pressure vessel 1 and the rotation radius of the stirring blades 8a, 8b, 8c, and 8d (FIGS. 2 and AA). ) Is another example which becomes 90 degrees between an adjacent stirring blade and a stirring blade.

As shown in Figs. 1 to 3, the pressure vessel 1 has a structure capable of maximizing the stress dispersion with respect to the pressure generated inside the container and maximizing the throughput of the workpiece. . The stirring shaft 2 provided in the pressure vessel is the central axis of the rotation diameter RD of the stirring blades 6a, 6b, 6c, 6d, 8a, 8b, 8c, and 8d, and is the size of the inner diameter VD of the pressure vessel 1. And within 50 to 95% of the value or the approximate VD value depending on the shape of the workpiece and the like, and the position of the stirring shaft in the vessel is stirred while the rotational diameter RD of the stirring blade is inscribed at the lower end of the pressure vessel 1. It should be installed above the pressure vessel several mm above the center of the rotor diameter RD. In other words, the pressure vessel 1 and the stirring vanes 6a, 6b, 6c, 6d, 8a, 8b, 8c, and 8d are closest to each other by several mm or more at the lower end of the pressure vessel, and conversely, at the top of the pressure vessel. It is configured to be the most isolated, which makes the stirring blade as close as possible to the pressure vessel 1 during stirring, thereby removing the processing material pressed around the lower outlet 11 of the pressure vessel to facilitate opening and discharging of the outlet. They are attached to the pipe group 9 by maximally separating and agitating the space between the pipe group 9 such as the air supply and exhaust and the temperature pressure sensor configured in the upper portion of the pressure vessel and the object being processed in the vessel. It is to minimize the damage of devices and devices by reducing the penetration.

On the other hand, in the top surface of the pressure vessel 1 in the inlet 10 of the workpiece in the end direction of the driving direction of the stirring shaft 2 in any one eccentric in the direction orthogonal to the axial direction of the stirring shaft (2). In another place that does not affect opening and closing the inlet 10, the pipe group 9 for supplying and exhausting the pressure vessel between the inside and outside of the pressure vessel and the temperature pressure measurement sensor, and at the center of the lower end of the pressure vessel The outlet 11 of the processed discharge is installed. The reason for installing the inlet 10 of the workpiece to be eccentric with the axial direction of the stirring shaft 2 in the upper part of the container is as shown in the example of driving in the clockwise direction of FIG. 3, from the inlet 10 to the container. By preventing the object to be accommodated from dropping directly onto the stirring shaft 2, the impact and deformation of the stirring shaft due to the falling object are protected to prevent damage such as packing of the pressure leakage preventing mechanism (see FIG. 5), and at the same time ( It is intended to minimize the damage to the pipe group caused by the object by forming a predetermined space with the pipe group 9 by causing the object to be agitated and moved to the lower portion of the container in the shortest time. Of course, it is also possible to add an impact inhibitor or a reinforcing agent to the inside and outside of the container at the dropping point of the object to be received from the inlet 10 (not shown in the illustration).

And the to-be-processed object accommodated in the pressure container 1 is wrapped by the stirring blades 6a, 6b, 6c, 6d, 8a, 8b, 8c, and 8d during stirring, as shown in FIGS. In order to ensure that the agitation blades are always gathered toward the outlet 11, the stirring blades are configured to be inclined with the axial direction of the agitating shaft 2, and the shaft 14 is welded to the agitating shaft 2, or a bolt or the like. To achieve mechanical fastening. In addition, inorganic materials or metals, such as glass chips or spoons, which cannot be treated in the object to be mixed are mixed so that they can be used as a place of avoidance when they are caught between the pressure vessel and the stirring blade during stirring to generate friction (force). This method protects the overload of the drive source 3 and easily scrapes away the processing material pressed on the bottom of the pressure vessel to facilitate the opening of the discharge port and the smooth discharge and stirring of the discharge vessel. , 6d, 8a, 8b, 8c, 8d) is a simple fork (2, 3, 5) with its two or more peaks separated, or a tooth which is mechanically fastened with a bolt or the like as shown in FIG. (7) It is configured as a fork, and when stirring, the stirring traces between adjacent stirring blades overlap each other to some extent. Here, the stirring blade in which the tooth 7 is used can be easily exchanged from breakage and abrasion of the peak, and the optimum clearance can be adjusted between the pressure vessel and the stirring blade by being fastened with a bolt or the like between the blades 6. There is a characteristic.

On the other hand, the stirring blades are formed on the stirring shaft (1) is composed of one or more each left and right around the outlet port 11 of the pressure vessel inclined toward the discharge port, the angle between the adjacent stirring blades 180 degrees (Fig. 2), such as 90 degrees (Fig. 3) to make an even arrangement as possible, and to be able to complete the whole process of stirring and discharging by one-way driving, this is a conventional method, for example, forward rotation during stirring In the case of discharging, it is possible to reduce the damage to the packing of the pressure maintaining mechanism and improve the life and the operability of the device, as well as to reduce the maintenance cost of the device.

FIG. 5 shows a shaft connection state between the stirring shaft 2 and the pressure vessel 1 using cupping with the pressure generating mechanism and the driving source 3 of the present invention, and FIG. The method is shown.

As shown in FIG. 6, the seal between the conventional rotating stirring shaft 20 and the pressure vessel 31 is pressed by inserting a gland packing 26 between the pressure vessel 31 and the stirring shaft 20. (B) is a common method. In this case, the packing wear rate is high, the packing replacement cycle is short, and the amount of leakage is allowed. Therefore, it is difficult to handle the device due to gas and liquid leakage. In order to replace the support shaft 30 of the stirring shaft 20 and the pressure vessel 31, too, the larger the device capable of commercial processing, the more difficult to disassemble and handle it can be said.

In the present invention, the ease of exchange of the packing is provided, and a cooling water (air) path is provided around the stirring shaft provided with the packing to suppress the temperature rise of the stirring shaft of the packing part, thereby contributing to increasing the durability and sealing of the packing. In order to make it possible to recover in advance as needed before leaking out of the apparatus even if harmful or harmful gas or liquid is generated in the gap between the pressure vessel 1 and the stirring shaft 2 by using the (air) furnace, As shown in Fig. 5, the pressure vessel 1 and the stirring shaft 2 and the stirring shaft cylinder 23 which can be disassembled and assembled are constituted, and the stirring shaft 2 is penetrated therein and the pressure vessel 1 is stirred. When the axle shaft cylinder 23 is disassembled and assembled with the pressure vessel 1 and the agitator shaft 2, the axle shaft outside the pressure vessel may be carried out under a wide working space. 2) Supported by the stirring shaft support 22 of the ring set and a drive source (3) including a reduction gear (5) was introduced into the cup coupling (4) structure able to move in the direction of the arrow. The stirring shaft cylinder 23 has a packing for supporting the high-temperature adapter ring 25b, the plural layers of the gland packing 26 and the backup ring 25a, and the packing portions 25a, 25b, and 26 from the cylinder-side peak. It consists of a pressing plate (29a), the packing pressing plate (29a) to cool the stirring shaft (2) and to be able to directly recover the gas or liquid that may leak slightly through the packing portion without leaving the device In order to install the cooling water (air) path for the purpose, the cooling water (air) inlet 42a and the cooling water (air) outlet 42b are formed outside the packing pressing plate 29a, respectively, and the packing pressing plate 29a and the stirring shaft are formed. O-ring 27 is provided between (2), and in order to further improve the sealing degree of the packing part, the structure which superimposes the structure of the back-up ring 25a into two sets of four to four cross-sectional triangles is set. And at least the stirring shaft 2 in the stirring shaft cylinder 23. Mirror processing on the main surface or plating treatment with hard chromium on the same site is more effective. Thus, for example, when it is determined that cooling of the stirring shaft is necessary in operating the apparatus, it is supplied to the cooling water (air) inlet 42a through the supply of cooling water such as tap water and the cooling water (air) outlet 42b. By recovering, the part sealed by the o-ring 27 and the back-up ring 25a of the stirring shaft can be cooled, and the gas or liquid leaking through the packing part also adopts the same method as the cooling method of the stirring shaft described above, or By closing one of the cooling water (air) inlet 42a or the cooling water (air) outlet 42b and recovering it using only the other, it is incinerated or discharged according to the recovery and harmlessness of the recovered water. In some cases, proper post-treatment such as stabilization and reuse may be performed. Thus, in the case of partial cooling performed on the stirring shaft 2, since the effect of suppressing the temperature rise is possible at least up to the installation portion of the backup ring 25a, the material of the packing pressing plate 29a is ˜200 ° C. in addition to the metal. It is also possible to use a good pressure seal within the range, for example, fluorine rubber or Teflon, such packing pressing plate 29a is a nut 41 or nut to the support mechanism installed in the stirring shaft cylinder 23 It is used as a self-locking mechanism (not shown in the illustration) combining a spring and a spring.

In the present invention has been described an apparatus configuration for processing by putting the steam generated from the outside of the pressure vessel into the container, the present invention is also applied to a method of directly heating the inside and outside of the container by impregnating the water to be treated. Of course. In addition, a stainless steel material resistant to corrosion may be used for pressure vessels, stirring shafts, stirring blades, etc., which come into contact with the workpiece during treatment, in consideration of durability of the apparatus.

      The present invention is expected to the following effects.

(1) The configuration in which the pressure vessel and the stirring vanes are closest to the lower end of the pressure vessel during agitation and, on the contrary, to the highest isolation from the upper portion of the pressure vessel, is provided in the vessel group of the piping of the air supply, exhaust, and temperature pressure sensors configured at the upper portion of the pressure vessel. It is expected to improve the durability of the device and the device by minimizing the damage caused by the object being processed.

(2) Installing the inlet of the workpiece to be eccentric with the axial direction of the stirring shaft in the upper part of the container enables the avoidance of collision between the workpiece and the stirring shaft accommodated in the container from the inlet, thereby packing the pressure leakage preventing mechanism. Protects against damage.

(3) Fork-type stirring blades reduce friction (force) between the pressure vessel and the stirring blades to protect the drive source from overload and to easily scrape away the processing material pressed on the bottom of the pressure vessel. It facilitates the discharge and stirring of the discharge.

(4) The inclined structure in which the stirring blades are directed toward the discharge port allows the whole process of stirring and discharging to be driven in one direction, and as compared with the conventional parallel operation method, it is possible to reduce the damage of the packing of the pressure maintaining mechanism and to extend the service life of the device. Economics are expected to be improved, and the cost of maintenance of the device is low.

(5) The packing pressing plate composed of o-ring and cooling water (air) is effective for partial cooling of the stirring shaft and restraining the temperature rise of the backup ring, and it is possible to recover the leaked gas and liquid through the sealing part, thereby improving the working environment atmosphere. Improve.

Claims (4)

        Organic waste such as plastic film, food waste, agricultural, livestock, and marine products, sewage sludge, etc. are housed in a pressure vessel of agitated shaft configuration and sterilized, carbonized, and selected for natural organic matter using a saturated steam or dry steam. In the organic waste treatment apparatus for extraction,         The stirring shaft in the pressure vessel is configured to be lower than the central axis of the pressure vessel, and is accommodated in the pressure vessel by a stirring blade on an upper surface of the eccentric pressure vessel in any direction orthogonal to the axial direction of the stirring shaft. Or a processing object inlet of the pressure container in a direction in which the processing object to be dropped is wrapped and pushed toward the outlet of the pressure container.        The method of claim 1,       The stirring blade is an organic waste treatment apparatus which is driven toward the outlet of the pressure vessel in a fork-like structure inclined in the axial direction of the stirring shaft.        The method of claim 2,       The stirring blade is separated and assembled, and the treatment device for organic waste is composed of a tooth that can control the gap with the bottom of the pressure vessel.        The method of claim 1,       Treatment of organic wastes between the stirring shaft and the pressure vessel, which prevents pressure leakage, partially cools the stirring shaft, and recovers leaked gas or liquid, and constitutes a stirring shaft cylinder that can be separated from the stirring shaft and the pressure vessel. Device.

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