JP2003336072A - Dry distillation equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide dry distillation equipment which can dry distill effectively a substance to be dry distilled. <P>SOLUTION: In a dry distillation equipment which is equipped with a dry distillation oven 8 comprising an inner kettle 1 to accommodate the substance to be dry distilled, an outer kettle 2 which is out fitted on the inner kettle 1 and forms between the inner kettle 1 and it a space 3 for heating the air, a lid 4 which closes up the inner kettle 1 tight, an exhaust pipe 6 connectively installed to the lid 4, and an oven body 5 which is so installed as to cover the outer kettle 2 and forms between the outer kettle 2 and it a heat source supplying chamber 7 and in which the dry distillation is conducted by supplying a heat source of a flame or the like to the heat source supplying chamber 7 and igniting the substance M to be dry distilled which is received/ closed in the inner kettle 1, the center parts of each bottom wall 1a, 1b of the inner kettle 1 and the outer kettle 2 are protruded upwards up to a predetermined height to form raised bottoms 11, 12, a heat source supplying inlet 9 is provided on the peripheral wall portion 5a of the oven body 5, and an exhaust cylinder 13 is installed which vertically passes through the bottom wall 5b of the oven body 5 and thrusts in the raised bottom 12 of the outer kettle 2 from its underside. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry distillation apparatus suitable for dry distillation of general waste and industrial waste, particularly waste plastic, waste tires and the like.

[0002]

2. Description of the Related Art Much of general waste and industrial waste is incinerated, but plastic waste materials in particular cannot be incinerated easily because of the problem of dioxin generation, and the actual situation is that they are difficult to dispose of. is there. However, recently, research and development of so-called recycling, in which waste plastics, waste tires, and the like are subjected to dry distillation, and the volatiles and carbides thereof are reused as fuels, have been advanced, and have already been implemented.

As shown in FIG. 10 (A), the dry distillation apparatus currently used for recycling the resources as described above includes an inner pot 1 for accommodating the material to be dried, and the inner pot 1 An outer pot 2 which is fitted onto the inner pot 1 to form an air heating space 3 with the inner pot 1, a lid 4 for sealing the inner pot 1, and an exhaust pipe 6 connected to the lid 4. And a furnace body 5 which is provided so as to cover the outer kettle 2 and forms a heat source supply chamber 7 between the outer kettle 2 and the outer kettle 2. The peripheral side wall portion 5a of the furnace body 5 is provided with a heat source supply port 29 at one end and an exhaust port 30 at the other end.

When the dry distillation apparatus is used, the dry distillation object such as waste plastic and waste tires is housed in the inner pot 1 and sealed with the lid 4, and the heat source supply chamber 7 is opened from the heat source supply port 29.
When the flame of the gas burner is supplied to the heat source, the flame spreads from the heat source supply port 29 through the heat source supply chamber 7 to the exhaust port 30 side along the bottom surface of the outer pot 2 at a temperature of about 800 ° C. Is heated, the air in the space 3 between the outer kettle 2 and the inner kettle 1 is heated, and the heating of the air in the space 3 heats the inner kettle 1 so that the material to be dried is stored in the inner kettle 1. In the state in which the air is cut off, the material to be dried is ignited to a decomposition temperature of, for example, about 400 ° C., thermally decomposed and dried and distilled. During the thermal decomposition of the material to be dry-distilled, raw materials such as liquefied waste plastic are accumulated in the inner pot 1, while the volatile components thereof are discharged as dry distillation gas from the exhaust pipe 6 and collected outside.
The liquid raw material accumulated in the inner pot 1 is finally carbonized to form a carbide.

[0005]

As can be seen from FIG. 10 (A), in the conventional carbonization device, the entire bottom wall 1a of the inner pot 1 is flat, so that the contact area with the material to be carbonized is small. Then, there was a problem that the material to be dry-distilled at a position away from the bottom wall 1a and the peripheral wall 1b of the inner pot 1, that is, the central portion of the inner part of the inner pot 1 could not be sufficiently carbonized and could easily be in the non-carbonized state. .

In order to solve the above-mentioned problems, the bottom wall 1a of the inner pot 1 as in the carbonization device 38 shown in FIG.
If the raised bottom portion 31 is formed by protruding the central portion upward by a required height, the contact area with the material to be dried is widened, which is considered to be good. However, the raised bottom portion 31 is formed only in the central portion of the bottom wall 1a of the inner pot 1. Then, as you can see from the figure,
The space portion 3o between the central portion of the bottom wall 2a of the outer pot 2 and the raised bottom portion 31 of the central portion of the bottom wall 1a of the inner pot 1 becomes large,
There is another problem that heating imbalance occurs between the inner space of the inner pot 1 and the other space portions, and the substance to be dried inside the inner pot 1 cannot be heated uniformly.

In order to further solve the above problems, FIG.
As in the dry distillation device 38 shown in (C) of 0, the central portion of the bottom wall 1a of the inner pot 1 and the central portion of the bottom wall 2a of the outer pot 2 are respectively projected upward, and the raised bottom portion 31 of the inner pot 1 and the outside If the raised bottom portion 32 of the kettle 2 is formed, the interval can be made uniform over the entire air heating space portion 3, so that it is considered that the material to be dried inside the inner kettle 1 can be uniformly heated. . However, in this case, the flame supplied from the heat source supply port 29 is
As can be seen from the figure, since the heat source supply chamber 7 flows toward the exhaust port 30 side parallel to the bottom surface of the outer pot 2, it can be said that the lower portion 32o of the raised bottom portion 32 of the outer pot 2 cannot be sufficiently heated. There's a problem.

The present invention, as shown in FIG.
Each of the inner pot 1 and the outer pot 2 is formed by protruding the center portion of the bottom wall upward by a required height to form a raised bottom, while the outer pot 2
It is an object of the present invention to provide a carbonization device which enables the lower part of the raised bottom part of the container to be sufficiently heated so that the material to be carbonized in the inner pot 1 can be effectively carbonized.

[0009]

The invention according to claim 1 is
An inner pot 1 for containing the material to be dried, an outer pot 2 fitted on the inner pot 1 to form an air heating space 3 between the inner pot 1 and the inner pot 1.
A furnace body that is provided so as to cover the lid 4 that seals the inner pot 1, the exhaust pipe 6 that is connected to the lid 4, and the outer pot 2, and that forms a heat source supply chamber 7 between the lid 4 and the outer pot 2. In the carbonization device for supplying a heat source such as a flame to the heat source supply chamber 7 to ignite the material to be dry-sealed and hermetically stored in the inner kettle 1 for carbonization, The center portions of the bottom walls 1a and 2a of the hook 2 are projected upward by a required height to raise the bottom portions 11 and 12, respectively.
To form the heat source supply ports 9 and 1 on the peripheral side wall portion 5a of the furnace body 5.
0, and an exhaust pipe 13 that penetrates the bottom wall portion 5b of the furnace body 5 in the vertical direction and projects into the raised bottom portion 12 of the outer pot 2 from below.

According to a second aspect of the present invention, in the dry distillation apparatus according to the first aspect, the inner pot 1 and the outer pot 2 are separately formed, and the inner pot 1 is detachable from the outer pot 2 and the outer pot 2 Is integrally attached to the furnace body 5.

A third aspect of the present invention is the dry distillation apparatus according to the second aspect, wherein the lid body 4 is detachably attached to the inner pot 1 by a clamp means.

According to a fourth aspect of the present invention, in the dry distillation apparatus according to the third aspect, a hanging frame 27 which can be moved vertically and horizontally by a crane K is provided, and the hanging frame 27 is attached to and detached from the inner pot 1. It is characterized in that a plurality of freely suspending cords 33 and a plurality of suspending cords 34 that are detachable from the lid 4 are provided.

[0013]

1 is a vertical sectional view of a carbonization apparatus according to the present invention, and FIG. 2 is a partial sectional plan view of the carbonization apparatus. This dry distillation apparatus has an inner pot 1 for containing a material to be dried, and an outer pot forming an air heating space 3 between the inner pot 1 and the inner pot 1 with a fixed gap. With the kettle 2
A lid 4 for sealing the inner pot 1, an exhaust pipe 6 connected to the lid 4, and the outer pot 2 are provided so as to cover the outer pot 2. A heat source supply chamber 7 is formed between the lid 4 and the outer pot 2. It is equipped with a dry distillation furnace 8 composed of a furnace body 5 for

The inner pot 1 and the outer pot 2 are provided with bottom walls 1a and 2a, respectively.
The central part of the protrusion protrudes upward by the required height, and the raised bottom parts 11, 1
When the outer kettle 2 is formed into a truncated cone shape, and the outer kettle 2 is fitted onto the inner kettle 1, the outer peripheral surface of the inner kettle 1 including the raised bottom portion 11 and the inner peripheral surface of the outer kettle 2 also including the raised bottom portion 12 The air heating space portions 3 are formed at substantially uniform intervals over the entire space. The cylindrical peripheral side wall 5a of the furnace body 5 is provided with heat source supply ports 9 and 10 at diametrically opposed positions, and the bottom wall 5b of the furnace body 5 is vertically penetrated to form an outer pot. An exhaust pipe 13 is provided in the raised bottom portion 12 of the second portion, and the exhaust cylinder 13 protrudes deeply from below. Each of the heat source supply ports 9 and 10 is equipped with a gas burner 26.

The outer pot 2 is integrally attached to the furnace body 5 as shown in FIG. 3, and the inner pot 1 is detachably attached to the outer pot 2. That is, the outer pot 2
Has a mounting peripheral frame 14 having a U-shaped cross section on the outer periphery of the upper end, and is supported and fixed to the furnace main body 5 by the mounting peripheral frame 14 in a state of being inserted into the furnace main body 5 from the upper end opening 15. There is. In addition, a number of reinforcing pieces 4 are provided on the U-shaped mounting peripheral frame 14.
3 are arranged at relatively small intervals in the circumferential direction, and reinforcing members 44 are attached at relatively large intervals in the circumferential direction as shown in FIGS. 1 and 2. The raised bottom portion 12 of the outer pot 2 is formed in a truncated cone shape by the bottom wall portion 12a and the peripheral wall portion 12b. The furnace body 5 has a heat insulating layer 17 made of refractory bricks inside a casing 16,
It is installed on the ground F via the base portion 18.

The exhaust stack 13 is, as shown in FIG.
Piping is formed in the pit P formed in the above, and one end 13a of the pit P penetrates the bottom wall portion 5b of the furnace main body 5 upward and projects into the raised bottom portion 12 of the outer pot 2 from below. The other end (not shown) extends from the pit P to the ground. A suction fan may be provided at a required location of the exhaust pipe 13.

FIG. 4 is a longitudinal sectional view showing the inner pot 1 and the lid 4 independently. Like the outer pot 2, the inner pot 1 has a mounting peripheral frame 19 having a lateral U-shaped cross section on the outer periphery of the upper end, and the lower end peripheral portion of the lid 4 is fitted to the upper end surface of the mounting peripheral frame 19. A supporting frame 20 having an upwardly U-shaped cross section for supporting is fixed (see FIG. 6). Further, the mounting peripheral frame 19 is provided with the clamps 21 at regular intervals in the circumferential direction, and the cover body 4 is provided with the clamp receivers 22 for receiving the clamps 21 and fixing and fixing the lid body 4 to the inner pot 1. The raised bottom portion 11 of the inner pot 1 is formed in a truncated cone shape by the bottom wall portion 11a and the peripheral wall portion 11b. Support frame 20 for fitting and supporting the lower end peripheral edge portion 4a of the lid body 4
A packing 23 to which the lower end peripheral edge portion 4a of the lid body 4 is closely attached when the lid is closed is installed inside the. The clamp 21 on the inner pot 1 side and the clamp receiver 22 on the lid 4 side constitute a clamping means for fixing the lid 4 to the inner pot 1.

As shown in FIG. 6, each clamp 21 has a base end portion of a U-shaped clamp frame 21a pivotally attached to a support piece 21b fixed to the mounting peripheral frame 19, and an eyebolt at its free end portion. A clamp screw 21c is screwed, and a clamp receiver 22 corresponding to the clamp 21 is horizontally projected from the lower end portion of a mounting piece 22b fixed to the outer peripheral surface of the lid body 4 to clamp the clamp 21. The frame 21a is composed of a fitting projection piece 22a to which the frame 21a is fitted.
The lid 4 is fixed to the inner pot 1 by screwing the clamp screw 21c into the upper surface of the and pressing the tip of the screw.

When the lid 4 is put on the inner pot 1, the lid 4 is lowered from the state shown in FIG.
As shown in FIG. 6, the lower end peripheral edge portion 4a of the clamp 21 is fitted into the support frame 20 on the inner pot 1 side and brought into close contact with the packing 23. In this state, the U-shaped clamp frame 21a of each clamp 21 As shown by the solid line, the fitting protrusion 22 of the clamp receiver 22 is rotated upward from the position that is tilted outward.
After fitting to a, the lid body 4 is fixed to the inner pot 1 by tightening the clamp screw 21c. FIG. 5 shows a state in which the lid 4 is thus fixed to the inner pot 1.

A heat insulating material 24 is attached to the back side of the lid 4. Further, the exhaust duct 2 is penetrated through the central portion of the lid body 4.
5, a base pipe portion 6o of the exhaust pipe 6 is attached to the exhaust duct 25, and an extension pipe portion 6a of the exhaust pipe 6 is detachably connected to the base pipe portion 6o via a one-touch joint J. . Further, a heat exchanger (not shown) for recovering volatile matter is connected to the tip of the extension pipe portion 6a.

In FIGS. 7 and 8, the inner pot 1 is separated from the outer pot 2 by the crane K and moved to a predetermined position.
The hanging frame 27 used for inserting and attaching the to the outer pot 2 is shown.
In FIG. 7, reference numeral 28 denotes a support frame equipped with a crane K, and a guide rail 29 made of H-shaped steel is arranged on the ceiling portion thereof, and the crane K is driven to travel along the guide rail 29. A suspension frame 27 is suspended and supported by the crane K via a lifting operation wire 30.

As can be seen from FIG. 8, the suspension frame 27 is formed by integrally forming three horizontal support frames 31, 31, 31 made of H-shaped steel in a three-pronged shape at 120 ° intervals. , A suspension shaft portion 32 at the center thereof, and the suspension shaft portion 3
The lifting operation wire 30 is fixed to the second hanging piece 32a. Triangular reinforcing pieces 45 are fixed to inner corners of the suspension shaft portion 32 and each horizontal support frame 31. Each horizontal support frame 31 is attached at its tip end to a suspension cord 33 which is detachable from the inner hook 1, and is attachable to and detachable from the lid body 4 at a required position separated from the tip end to the front side. The hanging rope 34 is attached.

The suspension rope 33 includes a wire 33a, U-shaped shackles 35 and 35 connected to both ends of the wire 33a,
The shackle 35 includes an attachment / detachment pin 36 that closes the opening. The hanging rope 34 includes a wire 34a having a shorter length than the wire 33a of the hanging frame 27, U-shaped shackles 35 and 35 connected to both ends of the wire 34a, and each shackle 35.
And a detachable pin 36 for closing the opening of the.

As shown in FIGS. 1, 2 and 8, the inner pot 1
Brackets 37 for attaching the shackles 35 of the suspension ropes 33 are attached to the upper end of the brackets at intervals of 120 ° in the circumferential direction, and each bracket 37 is provided with a pin hole a.
Brackets 38 with pin holes a are also attached to the lid body 4 at intervals of 120 ° in the circumferential direction. Further, brackets 39 and 40 with pin holes a are attached to the front end and the front side of each horizontal support frame 31. Therefore, in the hanging rope 33, the shackle 35 on the upper end side thereof has the horizontal support frame 31.
The bracket 39 at the tip end is always attached by the attachment / detachment pin 36, and the suspension rope 34 has its upper end shackle 35 always attached by the attachment / detachment pin 36 to the bracket 40 of each horizontal support frame 31.

When the dry distillation furnace 8 is used, the crane K is moved to just above the furnace main body 5 prior to its use, and the hanging lines for hoisting the inner pot are hung from the tips of the horizontal support frames 31. The lower end side shackle 35 of 33 is attached to each bracket 37 of the inner pot 1 with the attachment / detachment pins 36, and the lower end side shackle 35 of the lid lifting hanging rope 34 hanging from each horizontal support frame 31 is attached to each bracket of the lid 4. It attaches to 38 with the attachment / detachment pin 36, and it is in the state shown in FIG. Then, from this state, when the crane K raises the suspension frame 27 via the lifting / lowering operation wire 30, the inner pot 1 is detached from the outer pot 2 with the lid body 4 attached and is pulled up. When the shackle 35 on the lower end of the inner hook lifting rope 33 is removed from the bracket 37 of the inner hook 1 and all the clamps 21 for fixing the lid are released to raise the hanging frame 27, only the lid 4 is pulled up. Will be done.

Next, a method of using the carbonization device constructed as described above will be described.

First of all, a required material to be dried, which is made of plastic waste material such as waste tires, is put into the inner pot 1 of the dry distillation furnace 8. As shown in FIG. The inner kettle 1 of the dry distillation furnace 8 is removed from the outer kettle 2 and moved to the location where the material to be dried hopper 41 is installed. That is, first, as shown in (1), the hanging frame 27 operated by the crane K is lowered to attach the three inner hook lifting ropes 33 hanging from the hanging frame 27 to the inner hook 1, and then the hanging hooks 33 are lifted. By raising the frame 27, the inner pot 1
To a predetermined height.

Next, after the suspension frame 27 is horizontally moved from the position shown by the solid line to the position shown by the phantom line, the suspension frame 27 is lowered, and the inner pot 1 is placed on the trolley 42 waiting at the position just below. Put on. Then, the inner hook lifting rope 33 is separated from the inner hook 1, the hanging frame 27 is pulled up to a predetermined height, and then the carriage 42 is moved to the position indicated by. On the other hand, the suspension frame 27 is moved to the position shown by the solid line from and then lowered, and this time, the three outer hook lifting cords 34 suspended from the suspension frame 27 are attached to the lid body 4.
And the suspension frame 27 is pulled up as shown by the solid line in FIG.

As shown in FIG. 9, a dolly 42 on which only the inner pot 1 is placed, and as shown in FIG.
Is moved to a position immediately below, and at this position, the material to be dried is fed from the hopper 41 into the inner pot 1 and supplied. After supplying the material to be dried to the inner kettle 1 in this manner, the work is carried out in the reverse order of the above-mentioned steps, and the inner kettle 1 to which the material to be dried is supplied is attached to the furnace main body 5. Insert it in 2,
The lid body 4 for closing the inner pot 1 is fixed by the clamp means to be in the state shown in FIG. In FIG. 1, M indicates a substance to be dried, which is hermetically accommodated and supplied to the inner pot 1. Examples of the material to be dried M include waste plastic materials such as urethane sheets and covered electric wires, waste tires, and shredder dust obtained by finely cutting disassembled products of automobiles.

After the material to be dried M is hermetically housed in the inner pot 1 of the dry distillation furnace 8 as described above, the heat source supply ports 9 and 1 of the furnace main body 5 are provided.
Ignite the gas burners 26 installed in each of the 0,
When the flame F is supplied to the heat source supply chamber 7 from both heat source supply ports 9 and 10, the flame F flows in the heat source supply chamber 7 as shown by the arrows in FIGS. 1 and 2. That is, the flame F from the heat source supply ports 9 and 10 goes around the outer periphery of the outer pot 2 which is the upper side of the heat source supply chamber 7 and heats the peripheral side wall 2b of the outer pot 2 while the bottom wall 2a of the outer pot 2a. To the rear side of the raised bottom portion 12 formed in the central portion of the outer pot bottom wall 2a while heating the bottom wall 2a, and the peripheral wall 12b of the raised bottom portion 12 is heated.
After heating the bottom wall 12a and the bottom wall 12a, the exhaust gas is sucked into the exhaust cylinder 13 that is projected into the raised bottom portion 12, flows through the exhaust cylinder 13, and is discharged to the ground.

By heating the outer pot 2 by the flame F flowing through the heat source supply chamber 7 as described above, the outer pot 2 is heated.
The air in the space 3 between the inner pot 1 and the inner pot 1 is heated, and the heating of the air in the space 3 heats the inner pot 1, whereby the material to be dried M shuts off the air in the inner pot 1. In this state, the substance to be dried M is ignited to a decomposition temperature of, for example, about 400 ° C., thermally decomposed and dried and distilled. Then, during the thermal decomposition of the material to be dry-distilled M, liquefied waste plastics and other raw materials accumulate in the inner pot 1, while the volatile components thereof become dry distillation gas and are discharged from the exhaust duct 25 by the exhaust pipe 6. It is cooled and recovered by a heat exchanger (not shown) for recovering volatile matter connected to the exhaust stack 13. The liquid raw material accumulated in the inner pot 1 is finally carbonized to form a carbide.

In the dry distillation furnace 8, an exhaust pipe 13 is provided which penetrates the bottom wall portion 5b of the furnace body 5 in the vertical direction and penetrates into the raised bottom portion 12 of the outer kettle 2 to a deeper depth from below. , The flame F moving along the bottom wall 2a of the outer kettle 2
Are sucked into the exhaust stack 13, so that the raised bottom part 1 is inevitably generated.
2, the peripheral wall 12b and the bottom wall 12a of the raised bottom 12 are entirely heated. Since the raised bottom portion 12 is entirely heated in this manner, the space portion 3o between the raised bottom portion 12 of the outer pot 2 and the raised bottom portion 11 of the inner pot 1 is also the space portion 3 between the pots 11 and 12. It is heated sufficiently effectively like the other parts, whereby the material to be dried M contained in the inner pot 1 is uniformly heated, and the entire material to be dried M is effectively carbonized and uneven dry carbonization is carried out. No uneven charring occurs.

When the first dry distillation operation by the dry distillation furnace 8 is completed, after waiting until the temperatures of the inner kettle 1 and the outer kettle 2 are lowered to some extent, the work of removing the carbide formed in the inner kettle 1 is performed. . This carbide removal work may be performed according to the same process as the work process for charging the material to be dried M into the inner pot 1 as described with reference to FIGS. That is, when removing the carbide, the extension cylinder portion 13a is separated from the base cylinder portion 13o of the exhaust cylinder 13 from the state of the carbonization furnace 8 shown in FIG. 1, and then the inner pot 1 is left with the lid 4 as shown in FIG.
The lid body 4 may be removed at a position after the pulling up as shown in, and the carbide in the inner pot 1 may be taken out in this state.

When the removal of the carbide is completed, subsequently, the substance to be dried is put into the inner pot 1 from the hopper 41 at the position shown in FIG. 9 to be supplied, and after the substance to be dried is supplied, By performing the work in the reverse order of the work from No. to No., the inner pot 1 to which the material to be dried is supplied is inserted into the outer pot 2 attached to the furnace body 5, and the lid 4 is fixed by the clamp means. Then, when the state shown in FIG. 1 is obtained, the preparation for the next carbonization work is completed.

In the carbonization apparatus of the above-described embodiment, the inner pot 1 and the outer pot 2 are formed as separate bodies so that the inner pot 1 can be detached from the outer pot 2, and the outer pot 2 can be attached to the furnace body 5. Since it is attached integrally, when hoisting and moving the hook with a crane, only the inner hook 1 and the lid 4 need to be lifted. Therefore, the weight burden is reduced by the amount of the outer hook 2 left, and work is also possible. It will be easy. Further, since the outer pot 2 is integrally attached to the furnace main body 5, the lid body 4 is detachably attached to the inner pot 1 by the clamp means 21 and 22 instead of the outer pot 2.

The dry distillation apparatus of this embodiment is provided with a suspension frame 27 which can be moved vertically and horizontally by a crane K. The suspension frame 27 has a plurality of detachable attachments to the inner pot 1. The suspension cords 33 and 34 are detachably attached to the lid 4, and a plurality of suspension cords 34 having a shorter length than the suspension cords 33 for the inner pot 1 are provided. If the inner kettle 1 and the lid 4 are attached respectively, the inner kettle 1 with the lid 4 mounted thereon is lifted by the crane K, moved to a predetermined place and lowered, and then the hanging rope 33 for the inner kettle 1 is used. The lid 4 can be detached from the inner pot 1 by simply pulling up the hanging frame 27 if it is separated from the inner pot 1.
The work of removing the lid body 4 becomes quick and easy.

[0037]

According to the first aspect of the present invention, in the carbonization device, the center portions of the bottom walls of the inner pot and the outer pot are projected upward by a required height to form raised bottom portions, respectively, and are formed on the peripheral side wall portion of the furnace body. In addition to providing a heat source supply port, an exhaust pipe that penetrates the bottom wall of the furnace body in the vertical direction and projects into the raised bottom part of the outer pot from below is provided. The heat source that moves along the bottom wall of the kettle is sucked by the exhaust stack that protrudes from below into the raised bottom of the outer kettle, and inevitably flows into the recess on the back side of the raised bottom, where the raised bottom of the outer kettle is completely covered. Therefore, the space between the raised bottom of the outer kettle and the raised bottom of the inner kettle is heated as effectively as the other parts of the air heating space between the kettles. As a result, the material to be dried contained in the inner pot is heated uniformly, and the entire material to be dried is effectively subjected to dry distillation. It is, does not cause carbonization unevenness and carbonization unevenness.

According to the second aspect of the present invention, the inner pot and the outer pot are formed as separate bodies, the inner pot is removable from the outer pot, and the outer pot is integrally attached to the furnace body. Since there,
When the hook is moved by lifting it with a crane, only the inner hook and the lid have to be lifted. Therefore, the weight burden is reduced by the amount of the outer hook left in the furnace body, and the work is simplified.

According to the third aspect of the invention, as described in the third aspect, the inner pot is detachable from the outer pot, the outer pot is integrally attached to the furnace body, and the lid is the outer pot. not,
It is designed to be detachably attached to the inner pot by a clamp means.

According to the invention of claim 4, there is provided a hanging frame which can be moved in the vertical and horizontal directions by a crane, and the hanging frame includes a plurality of hanging lines detachable from the inner hook and a lid. Since there are multiple slings that can be attached to and detached from the body, if you attach both of these slings to the inner hook and lid, you can lift the inner hook with the lid lifted by a crane. After moving to a predetermined place and lowering it, if the hanging rope for the inner hook is separated from the inner hook, the lid can be removed from the inner hook just by pulling up the hanging frame, and the lid can be removed quickly and easily. Becomes

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a carbonization device according to the present invention.

FIG. 2 is a partial cross-sectional plan view of the carbonization device.

FIG. 3 is a longitudinal sectional view showing a furnace body of a carbonization device and an outer pot integrally attached to the furnace body.

FIG. 4 is a vertical cross-sectional view in a state where the inner pot and the lid are separated from each other.

FIG. 5 is a vertical cross-sectional view showing a state in which the lid is attached to the inner pot and the lid is fixed to the inner pot by the clamp means.

FIG. 6 is an enlarged perspective view showing a clamp means.

FIG. 7 is an explanatory diagram showing a state in which the inner hook and the lid attached to the inner hook are lifted by a crane via a hanging frame.

FIG. 8 is a perspective view showing a suspension frame and a suspension line.

FIG. 9 is an explanatory view showing a process of hoisting and moving an inner pot by a crane via a suspension frame, and supplying a material to be dried to the inner pot by a hopper at a predetermined place.

10 (A) to (C) are explanatory views for explaining points considered to be a problem of the conventional carbonization furnace.

[Explanation of symbols]

1 inner pot 2 Outer pot M dry residue 3 Air heating space 4 Lid 5 furnace body 6 exhaust stack 7 heat source supply room 8 Dry distillation furnace 9,10 Heat source supply port 11 Raised bottom of inner pot 12 Raised bottom of outer pot 13 Exhaust stack 27 Hanging frame 33 Hanging rope (for inner pot) 34 Hanging rope (for lid)

Front page continuation (51) Int.Cl. ⁷ identification code FI theme code (reference) C08J 11/12 C08J 11/12 F23G 5/027 F23G 5/027 A F27B 5/16 F27B 5/16 F term (reference) 3K061 AA23 AB02 AC13 AC14 BA06 CA07 4D004 AA07 AA11 AA28 AC04 CA24 CB04 CB34 4F301 CA25 CA52 4H012 HA02 HB02 HB09 4K061 AA01 BA07 BA12 CA08 DA01 DA10

Claims (4)

[Claims] 1. An inner pot for containing a material to be dried, an outer pot fitted to the inner pot to form an air heating space between the inner pot and a lid for sealing the inner pot. A dry distillation furnace consisting of an exhaust pipe connected to the lid and a furnace body that is provided so as to cover the outer kettle and forms a heat source supply chamber between the outer kettle and the heat source supply chamber is provided. In a carbonization device that supplies a heat source and strongly heats the material to be dried that is hermetically contained in the inner kettle and dry-distills it, the inner wall of the inner and outer kettles is projected upward by the required height and the center of the bottom wall is raised. Dry distillation that forms a bottom part and provides a heat source supply port on the peripheral side wall of the furnace body, and an exhaust pipe that penetrates the bottom wall part of the furnace body in the vertical direction and projects into the raised bottom part of the outer pot from below. apparatus. 2. The dry distillation according to claim 1, wherein the inner pot and the outer pot are formed as separate bodies, the inner pot is detachable from the outer pot, and the outer pot is integrally attached to the furnace body. apparatus. 3. The carbonization device according to claim 2, wherein the lid is detachably attached to the inner pot by a clamp. 4. A suspension frame movable vertically and horizontally by a crane, wherein the suspension frame has a plurality of suspension lines detachable from the inner hook and a plurality of suspension lines detachable from the lid. The dry distillation apparatus according to claim 3, wherein the hanging rope is provided.