JP2005169364A - Device for drying pyrolysis of waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for drying pyrolysis of a waste capable of efficiently carrying out drying and/or pyrolysis by securing a heat transfer area between the waste and the device for heating the waste. <P>SOLUTION: The device 100 for drying pyrolysis carries out the drying and/or the pyrolysis by heating the waste X to be treated. In a heat transfer pipe 1 equipped with a heating chamber 7 on the outer periphery, an agitation-type conveying member 6 is installed rotatably around the axial direction. The member 6 comprises two or more pipes 2 and 3 extending in the axial direction of the heat transfer pipe 1 and through which a heat transfer medium G flows, a partition plate 4 which divides the inside of the heat transfer pipe 1 from the inner side toward the inner wall side of the heat transfer pipe 1, and a belt-type conveying member 5 for conveying the waste X which is fixed to the partition plate 4 with an inclination with reference to the axial direction of the heat transfer pipe 1. Thereby, the problem is solved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is a drying pyrolysis apparatus for drying and / or pyrolyzing waste discharged from various places such as a company, factory, hotel, inn, restaurant, general household, etc. The present invention relates to a dry pyrolysis apparatus with improved heating efficiency.

  Many apparatuses for drying and / or pyrolyzing (also referred to as carbonization) have been proposed to treat paper sludge waste (also referred to as paper sludge) and waste such as garbage.

  As such a dry pyrolysis apparatus, a rotary kiln type apparatus is known which is of an external heating type and is dried and pyrolyzed using waste by rotating a cylindrical kiln. Moreover, in the thing with a comparatively large amount of processed waste, the apparatus etc. which arrange | position a several screw in the heat exchanger tube through which high temperature gas etc. pass are proposed.

  In this waste drying pyrolysis apparatus, it is desired to increase the amount of waste processing. For this purpose, it is desirable that the area for transferring heat to the waste (hereinafter referred to as heat transfer area) is large, but according to each of the above-mentioned devices, a large-scale facility is required. In order to increase the heat transfer area, various improvements have been made in the waste pyrolysis apparatus.

  In a rotary kiln-type dry pyrolysis apparatus, a large rotary kiln is provided with a plurality of small kilns, and the heat transfer area is reduced by a multi-cylinder kiln (1) that processes waste in the small kiln. It is known to increase.

  Moreover, by the thermal decomposition apparatus (2) which has many heat-transfer tube groups which rotate integrally with a kiln main body inside a rotary kiln, and the pipe | tube for processing a waste inside at the center of many heat-transfer tube groups, It is known to increase the heat transfer area. In this apparatus, a high-temperature gas is passed through a large number of heat transfer tubes, and waste is transported in the axial direction of the tubes while being stirred in the above-described tubes and processed.

  On the other hand, it is also known to increase the heat transfer area by a waste drying device (3) configured to flow steam outside the heat transfer tube and inside a so-called paddle type stirring and conveying member.

Also, a rotary retort furnace is known in which an external heat type beater is provided inside an outer cylinder (see, for example, Patent Document 1). The rotary retort furnace is configured such that the outer cylinder rotates, and the beater rotates with the rotation of the outer cylinder to stir the processed material.
Japanese Patent No. 3073717

  However, in the above-described (1) multi-cylinder kiln, further improvements are required, such as supplying the processed material evenly into the small kiln and sealing the high temperature gas to supply the high temperature gas.

  In addition, (2) in an apparatus in which a heat transfer tube group is arranged in a kiln, high-temperature gas or air must be supplied into the heat-transfer tube group and a processed product must also be supplied, so that the high-temperature gas is sealed. Further improvements are needed.

  Furthermore, in each kiln type | formula of said (1) and (2), the movement of the processed material to the axial direction is non-uniform | heterogenous, and a big thing tends to move quickly, and before throwing into each apparatus, It is necessary to make the size of the processed material uniform.

  In addition, (3) in the paddle type drying apparatus, steam can flow inside the paddle, but there is a problem that the amount of gas increases when a high-temperature heat medium capable of drying / pyrolysis is used. A larger-scale device is required than the device used in Japan. Further, further improvement is necessary to seal the high temperature gas.

  On the other hand, the present applicant has proposed an external heating type carbonization processing apparatus using a special stirring and conveying member instead of a screw (see Japanese Patent Application No. 2003-132946). However, such an external heat type apparatus can cope with an increase in the amount of waste processing, but an apparatus having a long heat transfer tube in the axial direction is required to increase the heat transfer area.

  Therefore, the present invention provides a waste pyrolysis apparatus that can secure a heat transfer area between the waste and the apparatus to heat the waste and can efficiently dry and / or thermally decompose the waste. For the purpose. Furthermore, an object of the present invention is to provide an apparatus for drying and decomposing waste, which can cope with an increase in the throughput of waste and has a simple sealing mechanism for high-temperature gas used for heating.

  The waste drying pyrolysis apparatus of the present invention that solves the above problems is a drying pyrolysis apparatus for heating and drying and / or pyrolyzing waste to be treated, and has a heating chamber on the outer periphery. A plurality of tubes that extend in the axial direction of the heat transfer tube and through which a heat medium flows, a partition plate that partitions the heat transfer tube from the inside of the heat transfer tube toward the inner wall, and the heat transfer tube A stirring and conveying member, which is provided on the partition plate with an inclination with respect to the axial direction of the belt and is formed of a belt-like conveying member for conveying the waste, is attached to be rotatable around the axial direction. It is characterized by that.

  According to this invention, heat can be transferred to the waste through a plurality of pipes in addition to the heating chamber outside the heat transfer pipe, so that the heat transfer area to the waste can be increased and the waste can be reliably agitated. Then, it can be transported to carry out a drying / pyrolysis treatment. Moreover, since the inside of the heat transfer tube is partitioned by a partition plate, even when processing a large volume of waste, it can be processed in almost equal amounts in each partitioned region, and the retention of waste Time can be secured. Furthermore, since the stirring and conveying member can be mainly composed of a substantially straight tube, the configuration of the drying pyrolysis apparatus is simplified.

  In the waste pyrolysis apparatus for waste according to the present invention, the plurality of pipes have a double pipe at the center of the heat transfer pipe, and the heat medium flows between the two pipes in the double pipe. A plurality of tubes having a diameter smaller than that of the double tube are provided around the double tube.

  According to the present invention, the volume of the waste to be treated can be adjusted by adjusting the diameter of the outer pipe of the central double pipe, and the stirring and conveying member can be adjusted from the outer wall of the central double pipe. Heat can be transferred to the waste located on the upper side of the, and the waste can be efficiently heated.

  In the waste pyrolysis apparatus for waste according to the present invention, the plurality of pipes are aggregated into one pipe at both ends of the plurality of pipes, whereby the inlet and outlet of the heat medium are provided. It is characterized by one place each.

  According to the present invention, there is a single inlet for the heat medium flowing in the pipe and a single outlet for the similar heat medium, so that the mechanism for sealing the heat medium so that it does not leak outside can be simplified. Can be. Further, even when the pipe is stretched by heat, it is possible to adopt a configuration that allows the pipe to be stretched on the side opposite to the side that drives the agitating / conveying member 6, so that problems during operation of the apparatus hardly occur.

  In the waste pyrolysis apparatus for waste according to the present invention, both ends of the agitating / conveying member are supported by a bearing member and are connected to a fixed pipe at a position including the bearing member.

  According to this invention, since both ends of the agitating and conveying member are supported at one place and connected to the fixed pipe, the structure of the drying pyrolysis apparatus becomes simple and the bearing member rotates. A structure in which the heat medium flowing in the pipe is sealed while supporting the stirring and conveying member can be provided.

  In the waste drying pyrolysis apparatus of the present invention, the heat medium is a gas after heating and detoxifying the exhaust gas generated by heating the waste.

  According to this invention, by using the high-temperature gas after detoxification for heating for drying / pyrolysis, it is possible to effectively use thermal energy and reduce the environmental load. Can do. That is, the gas generated from the waste is usually detoxified and brominated by heating to a high temperature with a smoke eliminator or the like. Since the detoxified and non-brominated gas is very high, for example, about 800 ° C., a device for lowering the gas temperature is required to discharge it to the atmosphere. An apparatus is not required and the thermal energy of the high temperature gas can be used effectively.

  According to the dry pyrolysis apparatus for waste of the present invention, the heat transfer area between the waste and the apparatus can be ensured for heating the waste, so that drying and / or pyrolysis can be efficiently performed. it can. According to the present invention, since the heat medium is caused to flow through the plurality of tubes and the heat medium is also passed through the heating chamber on the outer periphery of the heat transfer tube, the difference in extension due to heat between the plurality of tubes and the heat transfer tube is reduced. can do.

  Further, according to the waste pyrolysis apparatus of the present invention, it is possible to cope with an increase in the amount of waste processing, the sealing mechanism of the heat medium used for heating is simple, and the stirring and conveying member is mainly used. It can be set as the simple structure which consists of a pipe | tube. Furthermore, according to the waste pyrolysis apparatus of the present invention, the thermal energy of the exhaust gas generated from the waste can be used effectively, and the burden on the environment can be reduced.

  Below, the dry pyrolysis apparatus of the waste of this invention is demonstrated concretely with reference to drawings.

  FIG. 1 is a schematic cross-sectional view showing an example of the dry pyrolysis apparatus of the present invention, and FIG. 2 is a cross-sectional view of the dry pyrolysis apparatus shown in FIG. 2A shows a state where waste is being processed, and FIG. 2B shows a state where waste is not input. FIG. 3 is a schematic enlarged view of a support portion of the stirring and conveying member in the drying pyrolysis apparatus shown in FIG. FIG. 4 is a schematic perspective view showing the drying pyrolysis apparatus of the present invention.

  First, the structure of the dry pyrolysis apparatus of this invention is demonstrated.

  As shown in FIG. 1, the dry pyrolysis apparatus 100 of the present invention includes a plurality of tubes that extend in the axial direction of the heat transfer tube 1 and through which the heat medium G flows in the heat transfer tube 1 having a heating chamber 7 on the outer periphery. 2, 3 and the partition plate 4 which partitions the inside of the heat transfer tube 1 from the inner side of the heat transfer tube 1 toward the inner wall side, and the disposal provided on the partition plate 4 with an inclination with respect to the axial direction of the heat transfer tube 1 A stirring and conveying member 6 comprising a belt-like conveying member 5 for conveying the object X is attached so as to be rotatable around the axial direction. By this dry pyrolysis apparatus 100, the waste X to be treated can be heated and dried and / or pyrolyzed. Moreover, the heating chamber 7 is provided in the outer periphery of the heat exchanger tube 1, and the inside of the heat exchanger tube 1 is heated from the outside.

  Further, at both ends of the agitating and conveying member 6, a plurality of tubes 2 and 3 are integrated into a single tube 21 and 22 as described later. The agitating / conveying member 6 can be rotated by rotatably supporting the one tube 21 and rotating the other tube 22 by the driving device 15. As a result, the agitating and conveying member 6 conveys the waste X introduced from the charging port 11 while stirring. On the other hand, the processed product Z of the waste X that has been heated and dried and / or pyrolyzed is discharged from the discharge port 12.

  The plurality of tubes 2 and 3 extend in the axial direction of the heat transfer tube 1 and are provided in parallel or substantially in parallel to each other. A heat medium G for heating the waste X flows in the plurality of tubes 2 and 3.

  The plurality of tubes 2 and 3 include a small tube group 3 (3 is composed of a double tube 2 passing through the center of the heat transfer tube 1 and a plurality of tubes having a diameter smaller than that of the double tube 2 provided around the tube. In addition to the small tube group, individual tubes may be represented).

  At this time, the heat medium G is caused to flow through the double tube 2 in a space between the inner tube and the outer tube, and the heat medium G is also caused to flow through the small tube group 3. The inside of the inner tube of the double tube 2 may be hollow, or may be filled with a solid material that is the same as or different from the inner tube. In addition, the double pipe 2 may hold | maintain the space through which the above-mentioned heat medium G flows by providing the cylinder with a diameter smaller than an outer pipe | tube in an outer pipe | tube.

  As shown in FIG. 2 (a), the double pipe 2 efficiently transfers heat to the waste X, which will be located above the stirring and conveying member 6, to dry and / or thermally decompose the double pipe 2. Can do.

  Further, the double pipe 2 can adjust the amount of waste X treated by adjusting the diameter thereof.

  Around the double tube 2, it is preferable to provide the small tube group 3 on a concentric circle centering on the double tube 2. For example, as shown in FIG. 1, twelve small tube groups 3 can be installed at equal intervals around the center double tube 2, and further, sixteen small tube groups 3 can be installed at equal intervals around it. . Also, for example, as shown in FIG. 4, eight small tube groups 3 are installed at equal intervals around the central double tube 2, and 12 small tube groups 3 are installed at equal intervals around the group. The number of small tube groups 3 to be provided is not particularly limited.

  The plurality of tubes 2 and 3 are integrated into one tube 21 and 22 at both ends of each of the plurality of tubes 2 and 3, so that one inlet 81 and one outlet 82 for the heat medium G are provided at one location. It has become. In other words, the agitating / conveying member 6 is a single tube 21 at the connection portion with the air inlet 81 of the heat medium G, which is a fixed tube, and this is branched into a plurality of tubes 2 and 3. In a connecting portion with the discharge port 82 of the heat medium G, which is a fixed tube, the tube 22 is integrated into one tube 22.

  Thus, since the stirring and conveying member 6 provided in the dry pyrolysis apparatus 100 of the present invention is mainly composed of the straight tubes 2 and 3, the configuration is simple. In addition, when these pipes 2 and 3 are extended by the heat of the heat medium G, the end 21 on the non-driven side of the agitating and conveying member 6 is provided with a width that allows the extension to be adjusted. Can do.

  The partition plate 4 partitions the heat transfer tube 1 from the inner side toward the inner wall side. The partition plate 4 divides the heat transfer tube 1 into a plurality of regions extending in the axial direction. Therefore, the partition plate 4 is a flat plate having a length similar to that of the heat transfer tube 1. In FIG. 1, FIG. 2, and FIG. 4, the inside of the heat transfer tube 1 is divided into four regions by the partition plate 4, but the number of these regions is not particularly limited, and the scale and processing of the dry pyrolysis apparatus 100 are processed. What is necessary is just to determine suitably according to the quantity of the waste X etc. to be.

  In addition, although each area | region divided by the partition plate 4 may have a difference in volume, it is preferable to set it as the substantially same volume. This makes it possible to heat and treat the waste X evenly in each partitioned area.

  The partition plate 4 also has a function of stirring the waste X when the stirring / conveying member 6 rotates by providing an end portion on the heat transfer tube 1 side along the inner wall of the heat transfer tube 1. The partition plate 4 is provided at least between the inlet 11 and the outlet 12 of the waste X of the heat transfer tube 1.

  When the double pipe 2 is provided at the center of the heat transfer tube 1 as described above, the partition plate 4 is provided from the outer wall of the double tube 2 toward the inner wall of the heat transfer tube 1. Moreover, the partition plate 4 may be attached to the small diameter pipe 3 with a metal fitting or the like without performing welding or the like.

  The conveying member 5 is a member provided on the partition plate 4 with an inclination with respect to the axial direction of the heat transfer tube 1, and is provided for conveying the waste X. The conveying member 5 has a band shape and is provided so as to pass the tube 3 provided on the outside (the heat transfer tube 1 side) in the small tube group 3.

  Moreover, the conveyance member 5 is joined to the partition plate 4 so that it may become a part of a spiral along the inner wall of the heat exchanger tube 1, as shown in FIG.2 (b). Thereby, when the stirring and conveying member 6 rotates, the waste X that has been positioned below the heat transfer tube 1 can be reliably conveyed in the axial direction.

  The interval at which the conveying member 5 is provided (reference symbol P in FIG. 1) is not particularly limited, but is about ¼ to ¾, preferably about ½ of the diameter of the heat transfer tube 1. Moreover, the inclination with respect to the axial direction of the conveying member 5 is not particularly limited, but the inclination is nearly perpendicular to the axial direction so that the waste X to be treated can sufficiently secure the residence time in the heat transfer tube 1. Is preferred.

  The conveying member 5 has a width (reference numeral W in FIG. 2B), and the inner peripheral side is hollow except that the small tube group 3 is provided. As shown in FIG. 2A, when the waste X is mainly located above the double pipe 2, it passes through this cavity and is conveyed in the axial direction.

  The agitating / conveying member 6 is rotatably mounted in the heat transfer tube 1. Further, as shown in FIGS. 1 and 3, both ends 21 and 22 of the agitating / conveying member 6 are supported by the bearing member 13, and are connected to fixed pipes 81 and 82 at a position including the bearing member 13. Yes.

  Specifically, both ends 21 and 22 of the stirring and conveying member 6 are supported by the heat transfer tube 1 by the bearing member 13. Further, one bearing member 13 (left side in FIG. 1) sends the heat medium G to the pipe 21 at one end of the stirring and conveying member 6 rotating from the fixed pipe 81, and the other bearing member 13 (right side in FIG. 1). ) Also functions as a rotary joint that sends the heat medium G from the pipe 22 at one end of the rotating stirring and conveying member 6 to the fixed pipe 82.

  The drive part (right side in FIG. 1 and FIG. 3) of the stirring conveyance member 6 is demonstrated. One end 22 of the agitating / conveying member 6 is connected to the drive device 15 via a drive sprocket 14 with a chain, and is installed to be rotatable with respect to the fixed heat transfer tube 1. Bearing housing supports 16 are attached to both ends of the heat transfer tube 1 by flanges, and the agitating and conveying member 6 is rotatably supported by the bearing housing 17 and the bearing member 13. On the side of the bearing housing 17 where the heat transfer tube 1 is not provided, a fixed tube 82 is supported by a tube fixing metal 18 to form a fixed side of a so-called rotary joint. Further, the bearing member 13 includes a rotary joint seal member 19, and the inside of the heat transfer tube 1 and the outside air are sealed by a chamber seal member 20.

  Thus, in the dry pyrolysis apparatus 100 of the present invention, the support for the agitating and conveying member 6 and the rotating portion of the rotary joint are shared. Therefore, the configuration of the drying pyrolysis apparatus 100 is simplified, and the heat medium G flowing in the pipe can be sealed while supporting the rotating agitating / conveying member 6. Note that in a conventional drying apparatus in which steam, which is a heat medium, flows in a so-called paddle, sealing of the rotating portion of the heat medium and support of the internal paddle are performed separately.

  As shown in FIG. 1, the heat medium G flowing through the plurality of pipes 2 and 3 is disposed at the discharge port 12 of the waste X so that a temperature gradient is formed between the input port 11 and the discharge port 12 of the waste X. It flows in from the pipe 21 on the near side and flows out from the pipe 22 on the side near the inlet 11 for the waste X. Note that the heat medium G may flow from the pipe closer to the waste X inlet 11, pass through the plurality of pipes 2 and 3, and flow out from the pipe closer to the waste X outlet 12. Good.

  The temperature of the heat medium G is not particularly limited as long as the waste X can be dried and thermally decomposed in the heat transfer tube 1. For example, the temperature of the heat transfer tube 1 is about 500 to 800 ° C. Is set.

  As the heat medium G, air, gas, steam or the like having a predetermined temperature is used. Among these, as the heat medium G, it is preferable to use a gas after detoxifying the exhaust gas generated by heating the waste X. That is, since the exhaust gas generated by heating the waste X contains tar and other harmful substances, the exhaust gas needs to be burned at a high temperature by a smoke eliminator (not shown) to make it non-brominated and harmless. Since this non-brominated and detoxified gas is very high, for example, about 800 ° C., the thermal energy is effectively obtained by flowing this gas through the pipes 2 and 3 of the dry pyrolysis apparatus 100 of the present invention. Can be used. Moreover, by using such a heat medium G, it is not necessary to provide a device for producing a gas for heating the dry pyrolysis apparatus 100 separately, and the facility is simplified.

  Also in the heating chamber 7, the heat medium G is caused to flow in by providing an inlet 71 on the side close to the waste X discharge port 12, and the outlet 72 is provided on the side close to the waste X inlet 11. The heat medium G used for the heating chamber 7 is also a gas after detoxified by heating the exhaust gas generated by heating the waste X, like the heat medium G flowing through the tubes 2 and 3 in the heat transfer tube 1. Is preferably used. As shown in FIG. 4, the heat medium G is introduced by providing an opening 73 on the side close to the waste X inlet 11, passes through the heating chamber 7, and is close to the waste X outlet 12. You may make it flow out by providing the opening part 74 in the side.

  Further, the flow of the heat medium G is not particularly limited, but for example, the following four cases are conceivable. Referring to FIG. 4, (i) the heat medium G is introduced from the opening 73 on the side close to the input port 11 of the waste X, and flows out from the opening 74 on the side close to the discharge port 12 of the waste X. After that, the plurality of pipes 2 and 3 are caused to flow from the pipe closer to the waste X discharge port 12 and out of the pipe closer to the waste X input port 11 (as shown in FIG. 4). Flow of heat medium G). (Ii) The heat medium G is caused to flow in from the opening 74 and flow out from the opening 73, and then is introduced into the plurality of pipes 2 and 3 from the pipe on the side close to the input port 11 for the waste X. The X is discharged from the tube close to the discharge port 12. (Iii) The heat medium G is caused to flow in from the opening 73 and flow out from the opening 74, and at the same time, the heat medium G is caused to flow into the plurality of pipes 2 and 3 from one of the pipes and from the other pipe. (Iv) The heat medium G is caused to flow from the opening 74 and flow from the opening 73, and at the same time, the heat medium G is caused to flow into the plurality of pipes 2 and 3 from one of the pipes and from the other pipe. In the flows (ii) and (iv), the position of the opening 74 through which the heat medium G flows is the lower side of the heating chamber 7, and the position of the opening 73 through which the heat medium G flows out is the upper side.

  Of the above-described flow of the heat medium G of (i) to (iv), the flow of (i) and (ii) is more preferable. That is, in the flow of the heat medium G in (i) and (ii), the heat medium G whose temperature has decreased to some extent after the inside of the heat transfer tube 1 is heated by flowing in the heating chamber 7 is a plurality of tubes. 2 and 3 will flow. Therefore, it is not necessary to use a material having higher heat resistance for the stirring and conveying member 6 having the plurality of tubes 2 and 3, and the cost of the dry pyrolysis apparatus 100 can be reduced.

  Here, the rotation speed of the agitating and conveying member 6 is not particularly limited, and the waste X is sufficiently heated, dried, and dried until the waste X is charged into the heat transfer tube 1 and discharged. The range may be such that it can be thermally decomposed.

  The drying pyrolysis apparatus 100 of the present invention is capable of rotating a stirring and conveying member 6 including a plurality of tubes 2 and 3, a partition plate 4, and a conveying member 5 having the above-described operational effects into the heat transfer tube 1. It has the feature in having attached and does not specifically limit others.

  Therefore, for example, the material forming the heat transfer tube 1, the plurality of tubes 2, 3, the partition plate 4, and the conveying member 5 is not particularly limited, and any conventionally known material may be used. Specifically, it is necessary to use a material having a certain degree of heat resistance and corrosion resistance for each member used in the dry pyrolysis apparatus 100 of the present invention. For example, SUS310S is preferably used. .

  Further, the diameter and length of the heat transfer tube 1, the diameters (outer diameter and inner diameter) and length of the plurality of tubes 2 and 3, and the width of the conveying member 5 (reference numeral W in FIG. 2) are also particularly limited. It can be arbitrarily set according to the conveyance speed of the waste X, the degree of stirring, and the like.

  As the waste X, waste discharged from various places is used, and specifically, papermaking sludge waste, raw garbage, sewage sludge, ash and the like can be mentioned. Such a waste X has no significant variation in the particle size of the constituent materials, contains water almost evenly, and has a property that the substances after drying do not stick to each other well. Processed at 100. In addition, when the waste having the property of sticking to other substances is used, the waste sticks to the plurality of tubes 2 and 3, the heat transfer efficiency is deteriorated, and the heat transfer tube 1 may be clogged. is there.

  Next, in the dry pyrolysis apparatus 100 of the present invention, an operation for stirring and conveying the waste X will be described.

  The waste X is input into the heat transfer tube 1 from the input port 11 of the heat transfer tube 1. Then, the waste X enters one of the regions partitioned by the partition plate 4, comes into contact with the central double tube 2 and the small tube group 3, and heat is transmitted from the respective tubes 2 and 3. At this time, since the agitating and conveying member 6 is rotating, the waste X follows the inner wall on the lower side of the heat transfer tube 1 along the central double tube 2 and the partition plate 4 and is discarded. The object X can also transfer heat from the heat transfer tube 1. Subsequently, since the agitating and conveying member 6 continues to rotate, the waste X follows the inner wall of the heat transfer tube 1 and the partition plate 4, and again along the outer wall on the upper side of the central double tube 2. become. As described above, the rotation of the stirring and conveying member 6 allows the waste X to transmit heat from various positions in the heat transfer tube 1. While repeating this, the waste X is conveyed toward the discharge port 12 by the conveying member 5. Then, the waste X is dried and pyrolyzed and discharged as a processed product Z from the discharge port 12.

  As described above, the high-temperature heat medium G made of the waste X exhaust gas flows into the plurality of tubes 2 and 3 through the one end 21 of the stirring and conveying member 6 from the fixed pipe 81 and is used for stirring and conveying. It flows out of the fixed tube 82 through the other end 22 of the member 6. Similarly, the high-temperature heat medium G made of the waste X exhaust gas flows into the heating chamber 7 from the inlet 71 and flows out from the outlet 72.

  As described above, according to the waste pyrolysis apparatus 100 for waste X of the present invention, the heat transfer area between the waste X and the agitating and conveying member 6 can be ensured in order to heat the waste X. Thus, drying and / or thermal decomposition can be performed efficiently. Further, according to the dry pyrolysis apparatus 100 for waste X of the present invention, it is possible to cope with an increase in the throughput of the waste X, the sealing mechanism of the heat medium G used for heating is simple, and stirring is performed. A simple configuration in which the conveying member 6 mainly includes the pipes 2 and 3 can be employed. Furthermore, according to the dry pyrolysis apparatus 100 for waste X of the present invention, the thermal energy of exhaust gas generated from the waste X can be used effectively, and the burden on the environment can be reduced.

It is a schematic sectional drawing which shows the dry pyrolysis apparatus of the waste material of this invention. It is A-A 'sectional drawing of the drying pyrolysis apparatus of this invention shown in FIG. It is a schematic enlarged view of the support part of the member for stirring conveyance in the dry pyrolysis apparatus of this invention shown in FIG. It is a schematic perspective view which shows the dry pyrolysis apparatus of the waste material of this invention.

Explanation of symbols

1 ... Heat transfer tube 2 ... Double tube (multiple tubes)
3. Small tube group (multiple tubes)
DESCRIPTION OF SYMBOLS 4 ... Partition plate 5 ... Conveyance member 6 ... Agitation conveyance member 7 ... Heating chamber 13 ... Bearing member 81, 82 ... Fixed pipe 100 ... Drying pyrolysis apparatus P ... Conveyance member pitch W ... Conveyance member width X ... Waste Z ... Processed material G ... Heat medium

Claims (5)

A drying pyrolysis apparatus for heating and drying and / or pyrolyzing waste to be treated,
In the heat transfer tube with a heating chamber on the outer periphery,
A plurality of tubes extending in the axial direction of the heat transfer tubes and through which a heat medium flows;
A partition plate that partitions the inside of the heat transfer tube from the inside of the heat transfer tube toward the inner wall side;
A stirring and conveying member comprising a strip-shaped conveying member provided on the partition plate with an inclination with respect to the axial direction of the heat transfer tube and conveying the waste,
A drying pyrolysis apparatus, which is mounted so as to be rotatable about an axial direction. The plurality of tubes have a double tube at the center of the heat transfer tube, and the heat medium flows between two tubes in the double tube,
The drying pyrolysis apparatus according to claim 1, wherein a plurality of tubes having a diameter smaller than that of the double tube are provided around the double tube.   2. The plurality of pipes are aggregated into one pipe at both ends of the plurality of pipes, respectively, so that the heat medium has a single inlet and outlet. Or the drying pyrolysis apparatus of Claim 2.   4. The dry pyrolysis apparatus according to claim 3, wherein both ends of the stirring and conveying member are supported by a bearing member and are connected to a fixed pipe at a position including the bearing member.   The drying heat according to any one of claims 1 to 4, wherein the heat medium uses a gas that has been detoxified by heating an exhaust gas generated by heating the waste. Disassembly equipment.

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