KR101378928B1 - Confidentiality means of indirect heating of the pyrolysis unit equipped with - Google Patents

Abstract

The present invention is an indirect heating type pyrolysis device configured to indirectly heat waste (raw material) under an oxygen-free state to decompose gas, oil, and char. In detail, the present invention relates to an indirect heating type pyrolysis apparatus equipped with an airtight holding means for maintaining normal pyrolysis by preventing the vacuum (secret) state of the pyrolysis furnace from being destroyed by the influence of high temperature and temperature change. .
In the pyrolysis apparatus of the indirect heating method provided with the airtight holding means of the present invention, a pyrolysis furnace having a screw shaft installed with a screw blade inside the heating furnace formed heating means is installed to pyrolyze the waste under high temperature and vacuum state by an indirect heating method. In the indirect heating type pyrolysis device, a cooling fluid and an airtight fluid are interposed between the screw shaft and the driving device so as to prevent the airtight destruction caused by the expansion and contraction caused by the temperature change. It is made to include a hermetic holding means including at least one of the cooling airtight holding device used, and the elastic airtight holding device using the elastic coupling is installed on one side of the screw shaft to adjust the length of the screw shaft according to the change of temperature.

Description

Confidentiality means of indirect heating of the pyrolysis unit equipped with}

The present invention is an indirect heating type pyrolysis device configured to indirectly heat waste (raw material) under an oxygen-free state to decompose gas, oil, and char. In detail, the present invention relates to an indirect heating type pyrolysis apparatus equipped with an airtight holding means for maintaining normal pyrolysis by preventing the vacuum (secret) state of the pyrolysis furnace from being destroyed by the influence of high temperature and temperature change. .

As society shows full-scale industrialization, as the waste caused by 'mass production and mass consumption' is rapidly increasing, the environmental pollution accompanying the waste disposal is seriously required. Therefore, efficient waste disposal plans are urgently required.

In general, waste is a generic term for materials that become obsolete, and according to the conventional waste management law, people's lives or industries such as garbage, combustion materials, sludge, waste oil, waste acid, waste alkali, animal carcasses, etc. Substance that is no longer needed for activity. Waste treatment options currently in use include 'reduction', 'recycling', 'recycling', 'landfill' and 'incineration'.

Among these, waste reduction methods such as weight loss, recycling, and regeneration are not the final waste treatment methods, and only a few parts are wastes, and landfills cause severe soil and water pollution over a long period of time. It becomes a target. Therefore, at present, the method of 'incineration' is mainly used, which is a method of burning wastes by using a flame. However, waste treatment by incineration also has various problems. That is, in the case of incineration where the flame is directly applied to the waste, it is practically impossible to burn completely due to various factors such as waste load, density, moisture content, incinerator size and heating temperature, and soot, dust and air pollution due to incomplete combustion. There is a secondary problem that a large amount of pollution emission gas and the like.

Recently, various methods of pyrolysis wastes have been introduced in high temperature and vacuum environments, and various pyrolysis devices and methods have been presented, developed and used as in the attached patent documents, and are continuously being provided to further improve the technology. Developing technology.

Referring to FIG. 1, an indirect heating pyrolysis apparatus for pyrolysis waste in a high temperature and vacuum environment includes a heating furnace 1 in which a heating means 1a is formed, and an inside of the heating furnace 1. A screw shaft 3 having a pyrolysis furnace 2 for pyrolyzing waste, a screw blade 3a for moving waste introduced into the inlet 20a of the pyrolysis furnace 2, and the screw shaft 3 are driven. It is composed of a driving device (4), the waste injected into the pyrolysis furnace (2) is moved by the screw shaft (3) is heated to a high temperature by an indirect heating method, the pyrolysis furnace so that the waste is pyrolyzed in a vacuum environment state The inside of (2) maintains a vacuum state. In this manner, waste is thermally decomposed in a pyrolysis furnace (2) at high temperature and vacuum to decompose into gas, oil, and char, and the decomposed gas and oil are discharged through the gas outlet (2b). The gas and oil are separated and recovered by the collected recovery device, and the remaining char is discharged through the discharge outlet.

However, there is a very difficult problem to support the screw shaft is installed inside the pyrolysis furnace while maintaining the airtight to maintain the pyrolysis furnace in a vacuum state.

That is, when the screw shaft is rotated to maintain the airtight in the sealing portion using the packing (sealing) by changing (expansion and reduction) in the longitudinal direction of the shaft as shown in Figure 1 by the temperature change of the screw shaft (mechanical The hermetic seal of the mechanical seal is broken and it is impossible to maintain a vacuum.

Due to such a problem, the vacuum state of the pyrolysis furnace is destroyed, so that the waste is not preferably pyrolyzed, and the problems such as poor pyrolysis efficiency are caused.

(KR) Registered Patent Publication No. 10-0198980 (Registration Date: 1999.03.03) (KR) Registered Patent Publication No. 10-0266852 (Registration Date: 2000.06.28) (KR) Registered Patent Publication No. 10-0513932 (Registration Date: 2005.09.02) (KR) Registered Patent Publication No. 10-0748624 (Registration Date: 2007.08.06) (KR) Korean Unexamined Patent Publication No. 10-2011-0061434 (Published: 2011.06.09)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The present invention is an indirect heating method of the indirect heating method provided with an airtight holding means configured to maintain the airtight state of the sealing portion (mechanical seal) so that the vacuum state of the pyrolysis furnace is not destroyed by expansion and contraction due to temperature change. It is intended to provide a pyrolysis device.

That is, by cooling one end portion of the screw shaft rotated and heated to a high temperature to minimize expansion and contraction caused by the temperature change of the screw shaft, and to cope with the length change due to the temperature change, the packing for maintaining the airtight state, etc. It is an object of the present invention to provide an indirect heating type pyrolysis apparatus equipped with a hermetic holding means configured to maintain a hermetic state by reducing damage of the same configuration.

Indirect heating type pyrolysis apparatus equipped with the airtight holding means of the present invention, which is invented to achieve the above object, the indirect heating method is provided with a pyrolysis furnace having a screw shaft installed with a screw blade inside the heating furnace formed heating means. In an indirect heating type pyrolysis device configured to thermally decompose waste at a high temperature and a vacuum state, the screw shaft is disposed between the screw shaft and the driving device to prevent the airtight destruction caused by the expansion and contraction caused by the temperature change. At least one of a cooling airtight holding device using a cooling fluid and an airtight fluid, and an airtight airtight holding device using an elastic coupling installed on one side of the screw shaft to adjust the length of the screw shaft according to a change in temperature. And confidentiality means.

The cooler airtight device is installed on one side of the pyrolysis furnace, and an internal space in which a power transmission device for transmitting power of the driving device to the screw shaft is accommodated. It consists of a hermetic body having a cooling chamber configured to circulate the cooling fluid for cooling, one side of the upper side of the hermetic body in communication with the pyrolysis furnace so that one end of the screw shaft is inserted into the first through hole And a second through hole is formed at a lower portion of the other side surface corresponding to the one side surface on which the first through hole is formed so that the rotation shaft of the driving device is installed.

The level of the hermetic fluid contained in the inner space is characterized in that the level is adjusted and maintained such that the hermetic fluid is accommodated in at least the second through hole.

The expansion and airtight holding device, the screw shaft is composed of a wing side screw shaft, a power transmission side screw shaft, the first plate plate formed with a plurality of guide holes between the wing side screw shaft and the power transmission side screw shaft, Formed to correspond to the guide hole and is inserted into the guide hole is characterized in that it is made of a second plate plate formed with a plurality of guide slides.

Indirect heating type pyrolysis apparatus equipped with the airtight holding means of the present invention made as described above, such as packing used for airtightness by minimizing the expansion (expansion and contraction) according to the temperature change of the screw shaft by the airtight holding means By preventing the breakage of the structure to maintain the airtight state can solve the problems resulting from vacuum breakdown of the pyrolysis furnace.

Further, the hermetic holding means can maintain the vacuum state of the pyrolysis furnace further by maintaining the vacuum state of the pyrolysis furnace in structure.

In addition, the airtight holding means is made of at least one of a cooling hermetic holding device using cooling to minimize the temperature change, and an expansion and hermetic holding device that can cope with the change in length due to the temperature change of the screw shaft generated by the temperature change Proper handling of new construction can improve confidentiality.

The expansion and contraction holding means can be more easily manufactured and installed, and has an advantage of reducing the maintenance cost by easy for maintenance.

1 is a schematic cross-sectional view of an indirect heating type pyrolysis apparatus in use in the prior art.
Figure 2 is a schematic cross-sectional view of the pyrolysis apparatus of the indirect heating method with an airtight holding means showing an embodiment of the present invention.
Figure 3 is a schematic cross-sectional view showing an operating state of the pyrolysis apparatus of the indirect heating method with an airtight holding means of an embodiment of the present invention.
Figure 4 is a detailed schematic cross-sectional view of the airtight holding means of the pyrolysis apparatus of the indirect heating method with an airtight holding means of an embodiment of the present invention.
Figure 5 is a detailed cross-sectional schematic diagram of the cooling airtight holding device using the cooling fluid and the airtight fluid of the airtight holding means of the indirect heating method of the pyrolysis device having an airtight holding means of an embodiment of the present invention.
Figure 6 is a perspective view of the expansion and contraction holding device using a stretch coupling of the airtight holding means of the indirect heating method of the pyrolysis device having an airtight holding means of an embodiment of the present invention.
Figure 7 is an operating state of the expansion and contraction holding device using a stretch coupling of the airtight holding means of the indirect heating type pyrolysis device provided with an airtight holding means of an embodiment of the present invention.
8 is a cross-sectional schematic view taken along the line aa of FIG. 2.
Figure 9 is a detailed perspective view of the screw shaft of the indirect heating type pyrolysis apparatus provided with an airtight holding means of an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the present invention, the waste is thermally decomposed into a gas, oil, and char by heating to a high temperature in an indirect heating method in a vacuum state, but the vacuum (confidence) state of the pyrolysis furnace is not destroyed by the influence of high temperature and temperature change. The present invention relates to an indirect heating type pyrolysis apparatus equipped with a hermetic holding means for maintaining hermeticity so that normal pyrolysis can be achieved.

The configuration of the indirect heating type pyrolysis device (A) provided with the airtight holding means of the present invention is a heating furnace having a heating burner for heating at a high temperature largely, and pyrolysis to be installed inside the heating furnace to pyrolyze waste. A screw shaft having a screw blade for moving the furnace, wastes supplied to the pyrolysis furnace, and moving and discharging the remaining char after the pyrolysis, a driving device for rotating the screw shaft, and a high temperature and temperature change. It is composed of a hermetic holding means for preventing the vacuum state of the pyrolysis furnace from being destroyed.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described.

Referring to Figure 2, the configuration of the indirect heating type pyrolysis device (A) provided with the airtight holding means of the present invention is a heating burner 11 which is a heating means for heating the waste to a high temperature so that pyrolysis can occur largely; A heating furnace 10 having an inner space 10a provided therein, and an inner space 10a inside the heating furnace 10, and one end 20 'of the heating burner 11 side has an end 20 "of the other side. And a pyrolysis furnace 20 in which a waste inlet 21 and a gas outlet 22 are formed at an upper end of the other end 20 ″ side, and an outlet outlet 23 is formed at a lower side thereof. A screw shaft 30 having a screw blade 31 for moving the waste supplied and installed inside the pyrolysis furnace 20 toward the heating burner 11, and the screw shaft 30 are rotated forward and reverse. To prevent the airtight from being destroyed by the stretching device generated by the high temperature and temperature change. It consists of the airtight holding means (B) to.

The heating furnace 10 is provided with a conventional heating burner 11 to heat the pyrolysis furnace 20 in an indirect manner, is heat-insulated to prevent the heat is discharged to the outside to reduce the efficiency. .

2 to 3, the pyrolysis furnace 20 is to heat the waste by indirect heating method under vacuum to thermally decompose the gas, oil, char, etc., one end of the heating burner 11 side 20 'is installed to be lower than the other end 20 "so that the input waste can be easily moved to the heating burner 11 side, and the waste is pyrolysis furnace 20 above the other end 20". A waste inlet 21 provided with a sealing cover 21a that can be inserted therein is formed, and a gas outlet 22 through which the gas and oil generated by the waste is pyrolyzed is formed, and at the lower side, the remaining char after pyrolysis is formed. The outlet port 23 is provided with a sealing cover (23a) for discharging to the outside.

The pyrolysis furnace 20 has a cross section of the pyrolysis furnace 20 as shown in FIG. 8 so that the space for avoiding 20a may be formed to move the gas and oil generated by pyrolysis upward as shown in FIG. 2. It is preferably formed in the shape of '. That is, as shown in FIG. 8, a cross section is formed in a 'U' shape, and a screw shaft 30 having a screw blade 31 for moving wastes is installed at the lower side, and a space for avoidance 20a is formed at the upper side. To help.

As described above, the first curved portion R1 and the first curved portion R1 and the first portion are formed to prevent the gas and oil from moving through the space for avoiding portion 20a formed on the upper side of the screw shaft 30 in a stagnant state. Two curved portions R2 are formed. Gas and oil are moved by the first curved portion (R1) and the second curved portion (R2) without being stagnant to the gas outlet 22 as shown in FIG.

In the pyrolysis furnace 20, installation of respective gauges for checking the internal temperature, the internal pressure, and the vacuum state is natural, and is not shown in this embodiment.

2 and 9, the screw shaft 30 is installed inside the pyrolysis furnace 20 to move the injected waste in the direction of the burner (11) for heating during the pyrolysis process, and the remaining car after the pyrolysis It is configured to be discharged by moving in the direction of the discharge port 23, one end is supported to be rotatable in the axial direction to one end (20 ') of the pyrolysis furnace 20 of the heating burner 11 side, the other end is pyrolysis (20) The driven gear 43, which is a power transmission member, is installed at the end of the sealing portion 20-1 so as to be rotatable in the axial direction through the sealing portion 20-1 formed at the other end 20 " In the cooler airtight holding device 100 of the driving gear 40 is engaged with the motive gear 42, which is a power transmission member installed on the rotary shaft 41 of the drive device 40.

That is, the screw shaft 30 is a power transmission device composed of a motive gear 42 installed on the rotary shaft 41 of the drive device 40 and a driven gear 43 installed on the end of the drive device 40. Connected to transmit power and forward or reverse rotation.

At this time, the drive gear 42 and the driven gear 43, the power transmission device is preferably formed of a spur gear. This allows the driven gear 43 to move in the axial direction of the screw shaft 30 during expansion and contraction of the screw shaft 30 according to the temperature change.

As shown in FIG. 4, the sealing part (mechanical seal) 20-1 formed at the other end 20 ″ of the pyrolysis furnace 20 generally maintains the air tightness while the screw shaft 30 rotates. An airtight bearing member P is installed.

However, it is difficult to maintain airtightness while rotating the screw shaft 30 in the sealing portion 20-1 formed at the other end 20 "of the pyrolysis furnace 20, so that it can only be supported by general bearings and bushes. That is, the sealing part 20-1 formed in the other end 20 "of the pyrolysis furnace 20 by being able to hold airtight by the cooling airtight holding device 100 of the airtight holding means B which is post-separated. In the vacuum state of the pyrolysis furnace 20 can be maintained without maintaining the airtight state.

In the screw blades 31 formed on the screw shaft 30, a plurality of through holes 32 are formed as shown in FIGS. 2 and 9, or the plurality of through holes 32 are formed by forming a screw blade 31 as a mesh plate. ) May have multiple mesh holes.

The plurality of through holes 32 or the plurality of mesh holes formed in the screw blades 31 prevent the waste from being compressed during the pyrolysis process and are pyrolyzed through the plurality of through holes 32 or the plurality of mesh holes. Waste may pass through and cause agitation. This may have a synergistic effect of the thermal decomposition efficiency due to the stirring action.

2 to 7, the hermetic holding means (B) is a cooler airtight holding device (100) using a cooling fluid and an airtight fluid between the screw shaft 30 and the drive device 40 largely, the screw Is installed on one side of the shaft 30, the length of the screw shaft 30 may be made of any one of the expansion and contraction airtight holding device 200 using a flexible coupling to adjust according to the change in temperature, preferably the cooling airtight device (100) or the cooling airtight holding device 100 and the expansion and airtight keeping device 200 are preferable in maintaining airtightness.

The cooler airtight device 100 is located between the screw blades 31 and the drive device 40 to prevent the vacuum state of the pyrolysis furnace 20 from being destroyed by deformation due to heat, while also maintaining the airtight state. 4 and 5, the cooling chamber 111 is provided with an inlet 111a at the lower side and an outlet 111b at the upper side so that the cooling fluid can be circulated. The airtight body 110 includes an inner space 112 in which a power transmission device for transmitting power of the driving device 40 to the screw shaft 30 is accommodated.

The inner space 112 is formed in a sealed form so that the vacuum is maintained together with the interior of the pyrolysis furnace 20.

The hermetic holding body 110 is installed in the sealing portion 20-1 of the pyrolysis furnace 20, and the first through hole 113 is formed in one side upper portion so as to communicate with the sealing portion 20-1. One end of the screw shaft 30 is inserted into the first through hole 113.

A second through hole 114 is formed at a lower portion of the other side surface corresponding to one side surface on which the first through hole 113 is formed so that the rotation shaft 41 of the driving device 40 is installed.

The drive device 40 is located on the outside of the body 110 for airtightness, and usually uses an electric motor capable of forward and reverse rotation. The rotating shaft 41 of the drive device 40 is installed in parallel with the screw shaft 30, the mechanical seal (mechanical seal) so that the internal space 112 of the hermetic body 110 is maintained in a vacuum state Is supported by.

In the inner space 112 of the hermetic body 110, a power transmission device is installed to transmit the power of the driving device 40 to the screw shaft 30, and the power transmission device is a mechanical seal. The driving gear 42 provided in the rotary shaft 41 of the drive device 40 installed through the second through hole 114 and the screw shaft 30 provided through the first through hole 113 are provided. It consists of the driven gear 43. The inner space 112 contains a hermetic fluid.

The hermetic fluid is preferably used the same or similar fluid as the oil generated during pyrolysis in the pyrolysis furnace 20.

The level of the hermetic fluid is preferably positioned so that the hermeticity of the second through hole 114, which is a mechanical seal, can be maintained by the hermetic fluid, that is, the hermetic fluid is formed in the second through hole 114. Allow the fluid to be contained. Preferably, as shown in FIG. 5, the water level in the hermetic fluid is not located at least below the highest point 114a of the second through hole 114. To this end, it may include a level gauge and a supplementary device, which does not have a separate description because there is no difficulty in implementing the technology.

The cooler airtight holding device 100 has a small increase in temperature and a change in temperature by the cooling chamber 111 provided in the body 110 for hermetic air so that the amount of expansion and contraction of the screw shaft 30 is small, while the inside The airtight fluid accommodated in the space 112 minimizes the amount of expansion and contraction of the rotating shaft 41 of the drive device 40 according to the temperature change, and makes the airtight state of the second through hole 114 more firm by the airtight fluid. You can keep it.

The expansion and contraction keeping device 200 is to reduce the amount of expansion and contraction of the screw shaft 30 according to the high temperature and temperature changes, and to facilitate the manufacture and installation, and to facilitate the maintenance.

The expansion and contraction holding device 200 is formed on one side of the screw shaft 30, as shown in Figures 2 and 4, usually located at the front end of the sealing portion 20-1, the one end is rotated.

The expandable airtight holding device 200 has a screw shaft 30 at the front end of the sealing portion 20-1 as shown in FIGS. 6 and 7 by the wing side screw shaft 30a and the power transmission side screw shaft 30b. A first plate plate 210 having a plurality of guide holes 211 is formed in the wing side screw shaft 30a, and corresponding to the guide hole 211 in the power transmission side screw shaft 30b. A second plate plate 220 having a plurality of guides 221 formed therein and inserted into the guide hole 211 and slides is provided.

The amount of expansion and contraction of the blade side screw shaft 30a of the screw shaft 30 generated by the temperature change by the expansion and contraction holding device 200 made as described above does not affect the power transmission side screw shaft 30b. It is possible to prevent destruction of the airtight state of the sealing portion 20-1 generated by the expansion and contraction by the.

In addition, the screw shaft 30 is installed on the wing side screw shaft 30a and the sealing portion 20-1 having the screw blades 31 formed thereon, and the power transmission side screw shaft 30b having a power transmission member at an end thereof. It is composed of, and is connected to the expansion and contraction holding device 200 that can absorb (damping) the amount of expansion and contraction, it is easy to manufacture and installation, there is an advantage that the maintenance cost is reduced by easy maintenance.

Referring to the operating state of the indirect heating type pyrolysis apparatus provided with a hermetic holding means of the present invention,

3, the waste is introduced into the pyrolysis furnace 20 through the waste inlet 21, and the waste inlet 21 is closed.

By heating the internal temperature of the pyrolysis furnace 20 by using a heating burner 11 which is a heating means provided on one side of the furnace 10, the waste introduced into the pyrolysis furnace 20 is heated to high temperature by indirect heating. By heating, the pyrolysis is carried out under vacuum. At this time, the screw shaft 30 is rotated by using the driving device 40 to move the waste in the direction of the heating burner 11, which is a heating means, so that pyrolysis occurs well.

At this time, the thermal decomposition through the plurality of through-holes 32 formed in the screw blades 31 of the screw shaft 30 is passed through the liquid phase of the waste state, the stirring action occurs to increase the decomposition efficiency.

The gas and oil generated by the pyrolysis are discharged to the gas outlet 22 through the evacuation space portion 20a and guided to the gas and oil dust collector (not shown).

When the pyrolysis is completed, the screw shaft 30 is rotated in reverse to discharge the remaining embryos to the discharge outlet 23.

The airtight state of the pyrolysis furnace is not destroyed by the airtight holding means (B) even at a high temperature and a temperature change generated during such a pyrolysis process.

That is, the air tightness holding device (100) of the airtight holding means (B) can minimize the amount of expansion caused by the power transmission unit is heated to a high temperature or a temperature change by the fluid for cooling, and the size of the molecules rather than air The airtight state is good because airtightness is maintained by a large airtight fluid.

In addition, the amount of expansion (length change) generated by the temperature change of the screw shaft 30 having a relatively long length by the expansion / closing hermetic holding device 200 is a mechanical seal, or a mechanical transmission. By not being transmitted to the device part, it is possible to prevent the airtight destruction phenomenon caused by the amount of expansion (length change) due to temperature changes.

Indirect heating type pyrolysis device equipped with the airtight holding means of the present invention made as described above can improve the thermal decomposition efficiency of the waste by the reliability of the vacuum state of the pyrolysis furnace, a number formed on the screw blades of the screw shaft By the through hole of the agitation action can be generated, the pyrolysis efficiency can be increased and will be widely used as a pyrolysis device of waste.

10: heating furnace 11: heating burner
20: pyrolysis 20a: space for avoidance
30: screw shaft 31: screw blade
32: through hole
40: drive device
A: Indirect heating type pyrolysis device equipped with airtight means
B: Confidential means
100: airtight holding device 110: body for airtight
200: expansion and contraction holding device 210, 220: plate plate

Claims (4)

In the pyrolysis apparatus of the indirect heating method is provided with a pyrolysis furnace having a screw shaft installed with a screw blade inside the heating furnace in which the heating means is formed so as to pyrolyze the waste under high temperature and vacuum state by an indirect heating method,
Cooling using a cooling fluid and an airtight fluid between the screw shaft 30 and the driving device 40 so as to prevent the airtight destruction caused by the expansion and contraction phenomenon caused by the temperature change of the screw shaft 30 It is made of at least one of the airtight holding device 100, the expansion and contraction holding device 200 is installed on one side of the screw shaft 30 using the expansion and contraction of the length of the screw shaft 30 is adjusted according to the change in temperature. While a confidentiality means (B),
The cooler airtight holding device 100 is installed on one side of the pyrolysis furnace 20, and an internal space 112 in which a power transmission device for transmitting power of the driving device 40 to the screw shaft 30 is accommodated. . It is made of a hermetic body 110 is provided with a cooling chamber 111 made to circulate the cooling fluid for cooling,
A first through hole 113 is formed in an upper portion of one side of the hermetic body 110 to communicate with the pyrolysis furnace 20 so that one end of the screw shaft 30 is inserted therein, and the first through hole 113 is formed. Indirect heating method with an airtight holding means, characterized in that the second through hole 114 is formed in the lower portion of the other side corresponding to the one side and the side is formed so that the rotary shaft 41 of the drive device 40 is installed Pyrolysis device. The method of claim 1,
The level of the hermetic fluid accommodated in the inner space 112 is the level of the airtight holding means is characterized in that the level is adjusted so that the hermetic fluid is accommodated in at least the second through-hole (114). 3. The method according to claim 1 or 2,
The expansion and airtight holding device 200,
The screw shaft 30 is composed of a wing side screw shaft 30a and a power transmission side screw shaft 30b,
Between the wing side screw shaft 30a and the power transmission side screw shaft 30b, a first plate plate 210 having a plurality of guide holes 211 formed therein and correspondingly formed with the guide holes 211 and guide holes Indirect heating type pyrolysis apparatus provided with an airtight holding means, characterized in that the second plate plate 220 is formed with a plurality of guides 221 is inserted into the slide (211). In the pyrolysis apparatus of the indirect heating method is provided with a pyrolysis furnace having a screw shaft installed with a screw blade inside the heating furnace in which the heating means is formed so as to pyrolyze the waste under high temperature and vacuum state by an indirect heating method,
Cooling using a cooling fluid and an airtight fluid between the screw shaft 30 and the driving device 40 so as to prevent the airtight destruction caused by the expansion and contraction phenomenon caused by the temperature change of the screw shaft 30 It is made of at least one of the airtight holding device 100, the expansion and contraction holding device 200 is installed on one side of the screw shaft 30 using the expansion and contraction of the length of the screw shaft 30 is adjusted according to the change in temperature. While a confidentiality means (B),
The expansion and airtight holding device 200, the screw shaft 30 is made of a wing side screw shaft (30a), the power transmission side screw shaft (30b),
Between the wing side screw shaft 30a and the power transmission side screw shaft 30b, a first plate plate 210 having a plurality of guide holes 211 formed therein and correspondingly formed with the guide holes 211 and guide holes Indirect heating type pyrolysis apparatus provided with an airtight holding means, characterized in that the second plate plate 220 is formed with a plurality of guides 221 is inserted into the slide (211).

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