JPH0689345B2 - Dry distillation gas generator and dry distillation gasification combustion device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry distillation gas generation furnace for heating a high molecular substance such as rubber or plastic or a solid fuel such as a tire to combustible gas by thermal decomposition, and the dry distillation gas generation furnace It also relates to a dry distillation gasification combustion device.

[0002]

2. Description of the Related Art Conventionally, a combustion section is provided on a dry distillation section for dry distillation gasification of solid fuel, and a heat exchange section is provided on the combustion section.
An upward combustion type solid fuel combustion device that generates dry distillation gas in the lower part and combusts while raising this gas
9-231307). This is provided with an air supply means for sending a small amount of air to the bottom of the carbonization section, and in the drawing, only an upward air supply port is provided at the bottom. In principle, it is a kind of carbonization gasification combustion device,
The dry distillation section and the combustion section are only vertically continuous, but not a clearly divided structure. Therefore, the equipment did not sufficiently consider the efficiency of dry distillation gas generation and the dry clean gas as clean as possible, and did not adequately consider environmental issues such as soot, soot and odor. . In addition, the small upward air supply port that feeds the air that is drilled at the bottom is immediately clogged by ash from combustion, which greatly reduces the efficiency of dry distillation gas generation, and it also lacks stability in performance. . Therefore, it is necessary to clean it frequently, but it is a very troublesome work to put a driver etc. into each hole and scrape off the ash. As described above, the conventional device has a generation efficiency of carbonization gas,
Clean dry distillation gasification, stable performance, easy cleaning,
In terms of practicality, such as stability of performance, it was not satisfactory.

[0003]

DISCLOSURE OF THE INVENTION The inventor of the present invention has solved the drawbacks of these conventional carbonization gasification and combustion devices and has a high performance.
It was realized as a result of earnest efforts to develop a highly practical device. Hereinafter, the technical problems to be solved by the present invention were examined as follows. First, the technical problems regarding the invention of the carbonization gas generation furnace will be described.
In a dry distillation gas generation furnace, in order to combust and heat polymer materials such as rubber and plastics and solid fuels such as tires and convert them into dry distillation gas by thermal decomposition, the oxygen supply amount for combustion is controlled and limited. It is necessary to ensure that the low-flame combustion condition that has been established lasts for a long time. That is, a part of the solid fuel is burned, and the heat of combustion decomposes the solid fuel to generate combustible gas, and only a part of the solid fuel is weakly supplied to supply an appropriate amount of air necessary for continuing combustion. Must be compatible. However, in the carbonization gas generation furnace, maintaining and controlling the carbonization conditions by this combustion heating method, it is technically very difficult to stably extract clean combustible gas from solid fuel such as tires, In the past, we were unable to obtain satisfactory results.

Specifically, firstly, it is technically difficult to supply a controlled amount of air so as to maintain a well-balanced dry distillation condition of combustion and heating. Secondly, air is supplied so as to be soft and evenly distributed so that soot and dust such as carbon is not allowed to rise as much as possible, and it is difficult to stably take out clean combustible gas. Third
In addition, when solid fuel with a lot of impurities such as tires is burned and heated, impurities such as tar, carbon, wire, spiked tire pins, soil, etc. are heated together and melted, become ash, or become a residue. Therefore, the air outlet is often closed. For this reason, the supply of air became unstable during use, and it was difficult to stably maintain a heating and combustion state satisfying the dry distillation conditions for a long time. Fourthly, it is difficult to remove residual impurities in the dry distillation gas generation furnace so that the dry distillation gas generation capacity can be easily cleaned and prevent the dry distillation gas generation ability from being deteriorated due to long-term use. Met.

The present invention is intended to overcome the above technical problems. Next, technical problems of the invention regarding the carbonization gasification and combustion device will be described. In the dry distillation gasification combustion device in recent years, in the dry distillation gas generation furnace, it is basically how to stably take out a clean combustible gas from solid fuel, and how to completely burn this in a combustion gas burner section. It has become a technical issue. Simply burning primary solid fuel in a dry distillation gas generation furnace to generate dry distillation gas and then secondary combustion in the combustion section to burn it as much as possible is not enough for the recent soot and dust. It has the drawback that it cannot deal with environmental problems such as odor.

The inventor of the present invention has a structure in which a dry distillation gas generation furnace for generating dry distillation gas and a combustion gas burner section for completely combusting gasified fuel are completely separated, and the respective functions are enhanced as much as possible. It is something like this.
In particular, in order to completely burn so that smoke, soot, odor, etc. are not generated, first, the dry distillation gas should be as clean as possible, and the dry distillation gas should always be generated in a stable state and in a predetermined amount. Focusing on the most important condition, first, the air supply means of the dry distillation gas generation furnace was improved, and then an impurity separation tank was installed in the middle of the gas introduction pipe connecting the dry distillation gas generation furnace and the combustion gas burner section. Is provided to improve the cleanliness of the dry distillation gas supplied to the combustion gas burner section, and to achieve a higher degree of complete combustion.

[0007]

The first invention to be granted a patent is an air chamber at the bottom of a tank furnace having an openable fuel inlet and a dry distillation gas outlet, and an air communicating with the air chamber. In a dry distillation gas generation furnace provided with a blowing portion, the air blowing portion is configured as follows. The air blow-out part is provided with a ventilation recess formed at an appropriate place on the bottom surface of the tank furnace, an air duct communicating between the air chamber provided in the center of the ventilation recess and the inside of the tank furnace, and an opening in the tank furnace of the air duct. It consists of an attached air dispersion cap. The upper surface of the air dispersion cap is part of the bottom surface of the tank furnace, and an air outlet is formed on the peripheral side of the air dispersion cap so that air from the air duct is blown out from the peripheral side air outlet of the air dispersion cap. The air is supplied to the tank furnace by decelerating and distributed almost uniformly, and the supplied air is soft and evenly distributed over the entire bottom surface along the ventilation recesses around the air dispersion cap. It is a generator.

A second invention to be granted a patent is a tank furnace having an openable fuel inlet and a dry distillation gas outlet, and a cooling layer is provided on the entire outer circumference of the tank furnace, and the bottom portion thereof is provided. Has a three-layer structure including a bottom surface made of a heat resistant material, a cooling layer, and an air chamber.
A cleaning port is provided on the side of the tank furnace, and a plurality of air blowing units are provided on the bottom of the tank furnace. The air blowing portion is attached to a ventilation recess formed in a proper place on the bottom surface, an air duct that communicates the air chamber provided in the center of the ventilation recess with the inside of the tank furnace, and the opening of the air duct inside the tank furnace. And an air dispersion cap. The upper surface of the air dispersion cap attached to the opening in the tank furnace forms a part of the bottom surface of the tank, and the air blown from the air duct is directed to the side from the air outlet formed on the peripheral side of the air dispersion cap. In a dry distillation gas generation furnace, it is configured so that it is decelerated and distributed almost uniformly into the tank furnace, and the supplied air is distributed softly and evenly over the entire bottom surface along the ventilation recesses around the air dispersion cap. is there.

A third invention for obtaining a patent is to connect a dry distillation gas generation furnace and a dry distillation gas outlet of the dry distillation gas generation furnace with a gas introduction pipe, and to provide an impurity separation tank in the middle of the gas introduction pipe. In a carbonization gasification and combustion apparatus in which a combustion gas burner section is provided at the tip of the gas introduction pipe,
A dry distillation gasification combustion apparatus, wherein the dry distillation gas generation furnace is the dry distillation gas generation furnace according to claim 1.

A fourth invention to be granted a patent is to connect a dry distillation gas generation furnace and a dry distillation gas outlet of the dry distillation gas generation furnace to a gas introduction pipe, and to provide an impurity separation tank in the middle of the gas introduction pipe. In a carbonization gasification and combustion apparatus in which a combustion gas burner section is provided at the tip of the gas introduction pipe,
A dry distillation gasification combustion apparatus, wherein the dry distillation gas generation furnace is the dry distillation gas generation furnace according to claim 2.

[0011]

Since the first invention for which a patent is sought is constructed as described above, when solid fuel such as tires is put into the tank furnace through the fuel inlet and air is blown into the air chamber at the bottom, A predetermined amount of air is supplied into the dry distillation gas generation furnace through an air blowing section that communicates with the air chamber. At that time, the air blowing portion is provided with a ventilation recess formed in an appropriate place on the bottom surface of the tank furnace, an air duct communicating between the air chamber provided in the center of the ventilation recess and the tank furnace, and the inside of the tank furnace of the air duct. It consists of an air dispersion cap attached to the opening, and since the air outlet is formed on the peripheral side of the air dispersion cap, the air blown from the air duct is directed from the peripheral side air outlet of the air dispersion cap to the side. The air is decelerated and distributed substantially uniformly toward the inside of the tank furnace, and the supplied air is softly and evenly distributed over the entire bottom surface along the ventilation recesses around the air dispersion cap. Therefore, when the solid fuel such as the stored tire is ignited, only the vicinity of the bottom of the tank furnace where air is spread burns. Further, at that time, since the air dispersion cap has the upper surface thereof as a part of the bottom surface of the tank furnace and has no protruding portion, it is easy to store the solid fuel. Further, since the air dispersion cap has the blowout port formed on the peripheral side thereof and the ventilation recessed portion formed around the blowout port, the air blowout port is not inadvertently closed by the solid fuel, and the air is not blown through the ventilation recessed portion. The blowing momentum is used to spread to the side, and after the momentum disappears, it is softly diffused and supplied upward, so it is always soft and evenly distributed. As a result, the combustion of the fixed fuel is limited to the vicinity of the bottom where the air is stably supplied, and does not spread beyond that, and the stable partial combustion near the bottom heats the surrounding solid fuel to thermally decompose it. To generate a dry distillation gas efficiently and stably. Moreover, since the air to be supplied is always soft and diffusely supplied, carbon does not rise or float in the tank furnace due to the air, and the dry distillation gas generated is made clean with few impurities. The configuration of the air blowing portion of the second invention for which a patent is sought is the same as that of the first invention, and the operation and effect thereof are also the same, so the description thereof is omitted here. The other characteristic of the second invention is that a cooling layer is provided on the entire outer circumference of the tank furnace, and the bottom has a three-layer structure of a bottom made of a heat resistant material, a cooling layer and an air chamber. In addition, a cleaning port for the air chamber is provided on the side of the air chamber. These characteristic configurations have the following effects.

First, the installation of the cooling layer on the entire outer circumference of the tank furnace suppresses the temperature rise in the tank furnace to prevent excessive combustion of the solid fuel other than in the vicinity of the bottom, and to generate and float soot and soot. It has the effect of reducing as much as possible. Also, as a result of the bottom part having a three-layer structure, the high temperature part of the bottom part surface has sufficient durability, the bottom part of the tank furnace does not rise in temperature unnecessarily due to the cooling layer, and a large air chamber ensures that the bottom part is entirely air-cooled. Is supplied evenly and the supplied air is preheated. Further, the cleaning port provided on the side portion of the air chamber makes it possible to easily clean the residual impurities that have fallen through the air duct and accumulated. The dry distillation gasification and combustion apparatus of the third invention uses the dry distillation gas generation furnace according to claim 1 to efficiently and stably generate a dry distillation gas with few impurities, and to provide it in the middle of the gas introduction pipe. By using the impurity separation tank, a further clean dry-distilled gas is sent to the combustion gas burner section, and the clean dry-distilled gas is completely combusted in the combustion gas burner section. According to a fourth aspect of the present invention, by using the dry distillation gas generation furnace according to claim 2, the dry distillation gas with few impurities is efficiently and stably generated, and excess combustion of solid fuel other than near the bottom is prevented, The generation and suspension of soot and dust is minimized, and the durability and resistance of the bottom surface to high temperature parts, prevention of temperature rise at the bottom, even supply of air, easy cleaning, and other effects are obtained. . An impurity separation tank provided in the middle of the gas introduction pipe converts the generated dry distillation gas into a clean dry distillation gas and sends it to the combustion gas burner section, where the clean dry distillation gas is completely combusted. Is.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a side view showing a carbonization gasification and combustion device, and FIG. 2 is a front view showing a carbonization gas generation furnace. In the dry distillation gasification and combustion apparatus, a dry distillation gas generation furnace 1 and a combustion gas burner unit 2 which are separately manufactured are provided with an impurity separation tank 3 in the middle thereof.
Has a basic configuration in which they are connected by a gas introduction pipe 4.

The dry distillation gasification and combustion device of the illustrated embodiment is designed as an optimum device for obtaining thermal energy by using a waste tire as a solid fuel mainly to generate a dry distillation gas from this and completely burn it. is there. According to this, the gas introduction pipe 4 is connected to the dry distillation gas outlet 5 provided in the rear part of the dry distillation gas generation furnace 1, and the gas introduction pipe 4
An impurity separation tank 3 is provided in the middle of, and the combustion gas burner unit 2 is connected to the tip of the gas introduction pipe 4.

The dry distillation gas generation furnace 1 will be described in detail. As shown in FIGS. 1 and 2, a tank furnace 7 made of carbon steel having a fuel inlet 6 which can be opened and closed and a dry distillation gas outlet 5. It has become. In the figure, 8 is a safety valve provided on the top of the tank furnace 7, and another safety valve 8a may be provided if necessary. The structure inside the tank furnace 7 is shown in FIGS. That is,
3 is a vertical sectional side view showing the structure of the bottom portion in the tank furnace 7, and FIG. 4 is a plan view showing the structure of the bottom portion shown in FIG.

As is apparent from these drawings,
The openable / closable fuel inlet portion 6 is composed of a fuel inlet / outlet 6a which is opened to the front of the tank furnace 7 and a tank door 6c having a sealing device 6b. At this time, the fuel door 6
Since a is large, solid fuel such as tires can be easily put into the tank furnace 7 and piled up, and residues after combustion can be taken out and cleaned. In the illustrated embodiment, one dry distillation gas outlet 5 is provided behind the tank furnace 7, but the dry distillation gas outlet 5 is provided not only at the rear but also on the left and right sides. Of course, the gas introducing pipe 4 may be connected by selecting an appropriate one depending on the installation place. A cooling layer 9 containing cooling water is provided on the entire outer circumference of the tank furnace 7, which aims to cool the tank furnace 7. As shown in FIG. 4, since the cooling layer 9 extends to the immediate back side of the packing of the tank door 6c that constitutes the fuel inlet / outlet 6a, aging due to heat of the packing can be prevented and long-term use is possible. To The bottom of the tank furnace 7 has a three-layer structure of a bottom surface 10 made of a heat resistant material, a cooling layer 9 and an air chamber-11, and a cleaning port 11a is provided on the side of the air chamber-11. . Since the bottom surface 10 and the inner peripheral surface of the lower portion of the tank furnace 7 are high temperature parts,
Made of heat-resistant ceramics. Cooling layer 9
Is a water jacket system in which cooling water is contained outside the bottom surface 10.
It is designed to be cooled to increase its protection and service life. Air chamber-11 formed outside cooling layer 9
Has an air chamber shape formed on the entire bottom surface, and has a structure in which air is blown out uniformly and a required amount of air can be supplied at any time. At the bottom of the tank furnace 7, as shown in FIGS. 3 and 4, a plurality of air blowing units 12, 12a ... Are arranged so as to be scattered substantially uniformly. The air blowing units 12, 12a ...
The detailed structure is shown in FIGS. According to this, the air blowing portions 12, 12a ... Are provided with the ventilation concave portion 13 formed at a proper position on the bottom surface 10, and the air duct 14 that communicates the air chamber 11 provided in the central portion of the ventilation concave portion 13 with the inside of the tank furnace 7. And an air dispersion cap 15 attached to the opening of the air duct 14 in the tank furnace 7. As shown in FIG. 5, the air duct 14 has a mounting member 19 in which an air dispersion cap receiving portion 17 is formed in an upper end opening of a tubular body 16 and an embedded convex portion 18 is provided on an outer surface of the mounting member 19 and the mounting member 19. It is composed of a tubular body 20 attached to the lower part. The air dispersion cap 15 is shown in FIGS.
As shown in FIG. 4, the heat-resistant special casting is formed into an inverted triangular pyramid shape in which the upper surface 21 is a flat surface and the tapered surface 22 is formed on the lower surface, and the tapered surface 22 has radial projections 23, 23 ...
Are provided so as to project, and a centering projection 24 is formed near the lower end. When the air dispersion cap 15 thus formed is inserted into the opening of the air duct 14, the centering protrusion 24 is inscribed in the inner peripheral surface of the air duct 14 and is fitted to the center position while controlling the attitude. At the same time, the radial projections and the air dispersion cap receiving portion 17 are joined to each other to form a blowout port 25 between the taper surface 22 and the radial projection.

As described above, when the air dispersion cap 15 is attached to the opening in the tank furnace 7, the upper surface 21 thereof becomes a part of the bottom surface 10 of the tank, and the air blown out from the air duct 14 is the air dispersion cap 15 concerned. The air is supplied from the blow-out port 25 formed on the circumferential side of the tank sideways to the inside of the tank furnace 7 at a substantially uniformly reduced speed, and the supplied air is distributed along the ventilation concave portion 13 around the air dispersion cap 15 along the entire bottom surface 10. It is soft and evenly distributed.

According to the present invention, as described above, the air blowing portions 12, 12a ... Are connected to the air duct 14 and the air dispersion cap 1.
The air duct 14 is fixed to the bottom, and the air dispersion cap 15 is detachable so that it can withstand expansion and distortion due to heat and withstand long-term use. It also makes it easier to replace parts and perform maintenance.

Although not shown, in the tank furnace,
A thermometer for monitoring carbonization gas and a predetermined temperature (150 to 20
(0 ° C), equipped with a sensor that can automatically adjust the gas amount, a solenoid valve that completely seals the air when the power is turned off during a power outage, etc. ing.

[0020]

The first aspect of the present invention, which is intended to receive a patent, is a ventilation recess having the air blowout portion formed in a proper place on the bottom surface as described above, an air chamber and a tank furnace provided at the center of the ventilation recess. An air duct communicating with the inside and an air dispersion cap attached to the opening of the air duct in the tank furnace. The upper surface 21 of the air dispersion cap serves as a part of the bottom surface of the tank furnace, and An air outlet is formed on the peripheral side, and the air from the air duct is decelerated and distributed substantially uniformly into the tank furnace from the peripheral outlet of the air dispersion cap to the side, and the supplied air is the air dispersion cap. As it is configured to be soft and evenly distributed over the entire bottom surface along the peripheral ventilation recess, put solid fuel such as tires into the tank furnace from the fuel inlet, When blowing air into the air chamber parts through the air outlet portion communicating with the air chamber is supplied to the carbonization gas generating furnace a predetermined amount of air.
At that time, the air blown from the air blowing portion is decelerated and distributed almost uniformly into the tank furnace from the circumferential outlet of the air dispersion cap to the side, and the supplied air is around the air dispersion cap. It is supplied so as to be soft and evenly distributed over the entire bottom surface along the ventilation concave portion.

As a result, in the dry distillation gas generation furnace according to the present invention, firstly, it becomes possible to stably supply a predetermined amount of air controlled so as to maintain a dry distillation condition in which combustion and heating are balanced. In addition, the combustion of solid fuel is limited to the vicinity of the bottom where air is supplied. In this way, the stable partial combustion near the bottom portion heats the solid fuel to cause thermal decomposition, and the dry distillation gas can be efficiently and stably generated. Secondly, since the supplied air is always soft and supplied in a diffused manner, carbon does not rise or float in the tank furnace due to air,
It is possible to take out clean combustible gas stably. Thirdly, the upper surface 21 of the air dispersion cap is formed as a part of the bottom surface of the tank furnace, and the air outlet is formed on the peripheral side of the air dispersion cap so that the air from the air duct is discharged from the peripheral side outlet of the air dispersion cap. Since the fuel is decelerated and distributed almost uniformly into the tank furnace toward the side, when solid fuel with a lot of impurities such as tires is burned and heated, impurities such as tar, carbon, wire, spiked tire pins, soil, etc. Even if they are heated together and melted, become ash, or become a residue, they do not easily block the air outlet, so the air supply becomes stable during use, and dry distillation conditions are maintained. The filled heating and combustion state can be stably maintained for a long time. Fourth,
Since the air outlet is large and it is easy to remove and clean the residual impurities in the dry distillation gas generation furnace by removing the air dispersion cap, it is possible to prevent the dry distillation gas generation capacity from decreasing due to long-term use. .

The structure of the air blowing section of the second invention is also the first
It is the same as the invention and its effect is also the same. Another feature of the second invention is that by installing a cooling layer around the entire outer circumference of the tank furnace, the temperature rise inside the tank furnace is suppressed, excessive combustion of solid fuel other than near the bottom is prevented, and soot and soot are provided. It is possible to minimize the generation and floating of gas and to make the dry distillation gas that is generated clean. Also, as a result of the bottom part having a three-layer structure, the high temperature part of the bottom part surface has sufficient durability, the bottom part of the tank furnace does not rise in temperature unnecessarily due to the cooling layer, and a large air chamber ensures that the bottom part is entirely air-cooled. Is uniformly supplied and the air to be supplied is preheated to improve the efficiency of dry distillation gas generation. Further, the cleaning port provided on the side portion of the air chamber makes it possible to easily clean the residual impurities that have fallen through the air duct and accumulated.

In the dry distillation gasification and combustion apparatus of the third invention, the dry distillation gas generating furnace according to claim 1 is used to efficiently and stably generate a dry distillation gas containing few impurities, which is used as a gas introduction pipe. A clean dry distillation gas is made into an even cleaner dry distillation gas by an impurity separation tank provided on the way and is sent to the combustion gas burner section, and the clean dry distillation gas is completely burned at the combustion gas burner section, so thermal energy without soot, soot, and odor Can be created.

According to a fourth aspect of the present invention, by using the dry distillation gas generation furnace according to claim 2, the dry distillation gas containing few impurities can be efficiently and stably generated, and excess combustion of solid fuel other than near the bottom can be achieved. Prevents the generation and suspension of soot and dust as much as possible, and has sufficient durability against high temperature areas on the bottom surface, prevention of temperature rise at the bottom, uniform air supply, easy cleaning, etc. To be In addition, an impurity separation tank provided in the middle of the gas introduction pipe makes it possible to convert the clean dry-distilled gas into a more clean dry-distilled gas and send it to the combustion gas burner section, where the clean dry-distilled gas can be completely combusted.

[Brief description of drawings]

FIG. 1 is a side view showing a dry distillation gasification combustion device.

FIG. 2 is a front view showing a dry distillation gas generation furnace.

FIG. 3 is a vertical cross-sectional side view showing the structure of the bottom portion in the tank furnace. FIG. 4 is a plan view showing the structure of the bottom portion shown in FIG.

FIG. 4 is a plan view showing a structure of a bottom portion shown in FIG.

FIG. 5 is a vertical cross-sectional side view showing a configuration of an air duct of an air blowing unit.

FIG. 6 is a perspective view showing an air dispersion cap.

FIG. 7 is a bottom view showing an air dispersion cap.

FIG. 8 is a vertical cross-sectional explanatory view showing a state in which an air blowing portion is attached to the bottom portion.

[Explanation of symbols]

 1 dry distillation gas generation furnace 2 combustion gas burner part 3 impurity separation tank 4 gas introduction pipe 5 dry distillation gas take-out port 6 fuel injection port 7 tank furnace 8 safety valve 12 air blowing part 14 air duct 15 air dispersion cap 20 tubular body

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location C10G 1/10 2115-4H

Claims (4)

[Claims] 1. A dry distillation gas generation furnace in which an air chamber and an air blowing portion communicating with the air chamber are provided at the bottom of a tank furnace having an openable fuel inlet and a dry distillation gas outlet. The air outlet is provided with a ventilation recess formed at an appropriate position on the bottom surface, an air duct provided in the center of the ventilation recess for communicating the inside of the tank furnace with an air duct, and an air dispersion unit attached to the opening of the air duct in the tank furnace. The air dispersion cap has an upper surface which is a part of the bottom surface of the tank furnace, and an air outlet is formed on the peripheral side of the air dispersion cap so that air from the air duct is blown on the peripheral side of the air dispersion cap. From the side to the side, it is decelerated and distributed almost uniformly into the tank furnace, and the supplied air flows along the ventilation recesses around the air dispersion cap to the entire bottom surface. A dry distillation gas generation furnace characterized by being soft and evenly distributed over the body. 2. A tank furnace having an openable fuel inlet and a dry distillation gas outlet is provided with a cooling layer on the entire outer periphery of the tank furnace, the bottom of which is a bottom made of a heat resistant material. It has a three-layer structure of a cooling layer and an air chamber. A cleaning port is provided on the side of the air chamber, and a plurality of air blowing units are provided on the bottom of the tank furnace. The air blow-out part is attached to the ventilation recess formed at a suitable place on the bottom surface, the air duct provided in the center of the ventilation recess for communicating the air chamber with the inside of the tank furnace, and the opening of the air duct inside the tank furnace. And the upper surface of the air dispersion cap attached to the opening in the tank furnace forms a part of the bottom surface of the tank, and the air blown from the air duct is formed on the circumferential side of the air dispersion cap. The air is slowly and uniformly distributed from the outlet to the inside of the tank furnace, and the supplied air is soft and evenly distributed over the entire bottom surface along the ventilation recesses around the air dispersion cap. Characterizing dry distillation gas generation furnace. 3. A dry distillation gas generation furnace according to claim 1, a gas introduction pipe is connected to a dry distillation gas outlet of the dry distillation gas generation furnace, and an impurity separation tank is provided in the middle of the gas introduction pipe.
A carbonization gasification and combustion device in which a combustion gas burner section is provided at the tip of the gas introduction pipe. 4. A dry distillation gas generation furnace according to claim 2, a gas introduction pipe is connected to a dry distillation gas outlet of the dry distillation gas generation furnace, and an impurity separation tank is provided in the middle of the gas introduction pipe.
A carbonization gasification and combustion device in which a combustion gas burner section is provided at the tip of the gas introduction pipe.