JP2000279923A - Waste treating equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably treat waste by enlarging the cross sectional area of a tunnel type heating furnace at an inlet thereof more than that at an outlet thereof and providing external heating type heating devices on the four sides in the peripheral wall direction of the tunnel type heating furnace. SOLUTION: Since a tunnel type heating furnace (channel) 4 is gradually enlarged from an inlet 4e to an outlet 4f, as compression molding material 1-i is pushed out in the outlet 4f direction, a space 35 is formed mainly in the upper part of the channel 4. As a result, even in a part whose internal pressure was increased by the generated gas before, gas generated by drying and heat decomposition easily gets out to the upper space 35. And the channel 4 is heated by heating devices 8a, 8b from both the side face sides in addition to both the upper and lower surface sides to let heat in from the whole inner wall, causing the surface on both the side face sides of the compression molding material 10i to be carbonized to form clearances, allowing steam or gas generated on the back surface side of the compression molding material 10i to be led to the upper space through the clearances on both the side face sides of the dried and carbonized waste to introduce it into a high temperature reaction furnace 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a waste treatment facility for melting and gasifying various kinds of waste, and more particularly to a waste treatment facility capable of stably treating waste.

[0002]

2. Description of the Related Art At present, a shortage of waste treatment plants has become apparent, and many industrial wastes and general wastes have been incinerated as they have been generated or after some pretreatment, and have been reduced in volume. Later, final disposal such as landfill is often performed. There are various methods for incineration, but in recent years, the management of harmful substances such as dioxins in generated gas at incineration plants has become a problem, and mere incineration has become impossible.

[0003] Therefore, there is a demand for a treatment method capable of decomposing harmful substances such as dioxins in a high-temperature oxidizing atmosphere. As waste treatment methods capable of such high-temperature treatment, JP-A-6-26626 and JP-A-6-79252
And a waste disposal process disclosed in Japanese Patent Application Laid-Open No. 7-323270.

The above-described process is a waste treatment process in which waste is compressed, molded, dried, thermally decomposed, carbonized, and the generated carbide is melted and gasified to obtain a fuel gas. FIG. 3 is a side sectional view of the above-described waste treatment facility. In FIG. 3, reference numeral 1 denotes batch (batch) waste.
A compression device for pressurizing and compression molding, 2 is a compression cylinder,
Reference numeral 3 denotes a compression support plate, and 4 denotes a horizontal tunnel-type heating furnace (hereinafter referred to as a tunnel-type heating furnace or channel) for drying, pyrolyzing, and carbonizing compressed waste (hereinafter also referred to as a compression molded product). , 4a is a drying region of the compression molded product, 4b is a pyrolysis and carbonization region of the compression molded product, 4e is an inlet of the tunnel heating furnace (: channel) 4, 4f is an outlet of the tunnel heating furnace (: channel) 4, 5 is a high temperature reactor, 6a, 6b
Is an external heat type heating device provided in the upper wall and the lower wall of the tunnel type heating furnace 4, respectively, 7 is a pressure gauge in the lower part of the tunnel type heating furnace 4 furnace, 10a and 10i are compression molded products, 11i, 11n is a carbonized compression molded product (hereinafter also referred to as carbonized product), 12 is a mixture of carbonized product and combustion residue, 13a and 13b are oxygen-containing gas injection ports, 14 is a melt, 14H is a melt outlet,
Reference numeral 20 denotes a waste inlet, 21 denotes a lid of the waste inlet, and 40 denotes an outlet of a carbonized product of the tunnel heating furnace (: channel) 4 (: a charging port of the carbonized product into the high-temperature reactor 5). , 50 quenching apparatus of an exhaust gas discharged from the high temperature reaction furnace 5, 51 gas purifying apparatus, 52 a gas outlet of the high temperature reaction furnace 5, the purified gas 53, f ₁ is the compression-molded product 10a, 10i moving direction of the , f ₂ is carbonized product 11i, 11n moving direction of, f ₃ is a tunnel type heating furnace (:
Flow direction of the pyrolysis gas generated in channel 4, f ₄
The direction of rotation of the lid 21 of the high-temperature reaction furnace oxygen-containing gas blowing direction into the 5, f ₅ the direction of movement of the compression cylinder 2, f ₆ is the direction of movement of the compression support plate 3, f ₇ waste inlet 20 Is shown.

The heating devices 6a and 6b shown in FIG. 3 are of a gas heating type in which a high-temperature gas is circulated through pipes provided in upper and lower furnace walls of a tunnel type heating furnace 4. In the waste treatment equipment shown in FIG. 3, first, a predetermined amount of waste supplied from the waste inlet 20 into the compression device 1 is batch-compressed using the compression device 1 to form a tight compression molded product 10a. And

Next, the compression molded product 10a is pushed into an elongated tunnel type heating furnace (: channel) 4 which is heated from upper and lower wall surfaces in the furnace. At this time, the water contained in the waste is squeezed out in the above-described compression step and pushed into the channel 4 together with the waste. The cross-sectional shape of the compression-molded product 10a is the same as the cross-sectional shape of the inner wall of the inlet 4e of the channel 4, and the same size.
Since a is pushed in contact with the inner wall of the channel 4, the atmosphere in the channel can be sealed at the channel entrance.

[0007] Each time a new compression molded product is pushed in, the compression molded product 10i slides in the channel 4 and moves. The channel 4 is heated from the upper and lower wall surfaces in the furnace as described above, and the inside thereof is heated to about 600 ° C., and during the movement of the compression molded product 10i and the temperature rise, the compression molded product 10i is heated.
Is dried, pyrolyzed and carbonized.

[0008] The carbonized product 11n and the gas components generated by drying and thermal decomposition are charged and flow into the high-temperature reactor 5 maintained at 1000 ° C or higher. A gas vent groove leading to the high-temperature reactor 5 is formed on the side wall of the channel 4 so that steam and gas generated by drying and thermal decomposition are sent into the high-temperature reactor 5 along the gas vent groove. Has become.

In the high-temperature reactor 5, combustible substances in the gas generated by pyrolysis of the carbonized product and the compression-molded product are burned and pyrolyzed by the oxygen-containing gas to gasify. In this case, by adjusting the amount of oxygen in the oxygen-containing gas, the generated gas (; exhaust gas) can be recovered as a fuel gas containing carbon monoxide and hydrogen.

[0010] Further, a residue portion (non-combustible material) such as a mineral component and a metal component that is not gasified by combustion or thermal decomposition is melted in the high-temperature reactor 5 to form a molten material 14 composed of molten metal and molten slag. And the melt outlet at the bottom of the high-temperature reactor 5
Recovered from 14H. According to the waste treatment method described above,
The compression molded product 10a moves while sliding in the channel 4,
Heating device 6 installed on the upper and lower sides of the upper and lower walls in the furnace
When heat is supplied by a and 6b, the compression-molded product is gradually dried from its upper and lower surfaces, and pyrolysis and carbonization proceed inside.

FIGS. 4A to 4E show tunnel type heating furnaces (:
4 schematically shows a process of drying, pyrolyzing, and carbonizing waste in a channel 4. 4 (a) is a side sectional view of the inside of the tunnel heating furnace 4, and FIGS. 4 (b) to 4 (e) are points A, B, C and D in FIG. 4 (a), respectively. A cross-sectional view (: a cross-sectional view orthogonal to the direction of travel of the compression-molded product) in the tunnel type heating furnace 4 at a point is shown, and points A, B, C, and D are:
The distance from the entrance 4e to the exit 4f of the tunnel heating furnace 4 is 1
, Respectively, about 0.05, 0.33, 0.67, 0.
The distance is 95.

In FIG. 4, reference numeral 30 denotes an undried compression molded product, 31 denotes an undried portion of the compression molded product, 32 denotes a dry portion of the compression molded product, 33 denotes a pyrolysis portion of the compression molded product, and 34 denotes a compressed portion. The carbonized portion of the molded product, H indicates the distance between the upper inner wall surface and the lower inner wall surface of the tunnel heating furnace 4, and the white arrow indicates the heat input into the tunnel heating furnace 4. The compression molded product of the waste inserted into the inlet 4e of the channel 4 is pushed rightward from the left side in FIG. 4 (a).

At this time, since the channel 4 is heated from above and below, drying, thermal decomposition, and carbonization sequentially proceed inward from the upper and lower surfaces of the compression molded product. Channel 4
At point A in the vicinity of the inlet 4e of the channel 4, the compression molded product is entirely undried,
At point B, which reaches 1/3, drying proceeds on the upper and lower surfaces.

Thereafter, at point C, which has reached about 2/3 of the entire length of the channel, thermal decomposition starts further in the portion in contact with the upper and lower surfaces, and the inside is in a dry state, and in the central part in the vertical direction, it is in an undried state. Form. Further, at point D near the outlet of the channel, the portions near the upper and lower furnace walls of the channel are in a carbonized state, and the drying, thermal decomposition, and carbonization progress to a state in which the inside is thermally decomposed and the center is a dried state. .

The above is the state change of the waste compression-molded product inside the channel. In such a conventional tunnel heating furnace that performs drying, pyrolysis, and charcoal heating by heating from the upper and lower surfaces, drying, heat Decomposition and charcoal fire progress from the upper and lower surfaces of the compression molded article toward the center. As described above, in the conventional tunnel-type heating furnace, the compression molded product is sequentially dried, thermally decomposed, and carbonized in the vertical direction. In this process, steam and carbonization are produced by drying and pyrolyzing the waste compressed molded product. Gases such as hydrogen are generated.

At the channel inlet, the compression-molded product is pushed in while keeping contact with the inner wall and is gas-sealed, so that gas generated by drying and thermal decomposition flows toward the outlet of the channel. At this time, the gas vent groove is provided on the side wall of the channel as a path for water vapor and gas. In particular, when the waste contains a large amount of water, or the waste is as fine as powder or sludge waste. When a large amount of waste is contained, the gas vent groove is filled with water or powder, and the flow of generated steam or gas to the stable high-temperature reactor 5 is hindered.

Since the undried compression molded product has a structure in which the gap between the wastes is filled with moisture, almost no gas flows in the gap. On the other hand, at the time when the thermal decomposition of the compression molded product has progressed to some extent and the carbide has been formed, the gas easily flows through the gap between the solids and the airflow resistance decreases, but in the dry state, or in the initial state of the thermal decomposition. In the solid state, a large amount of gas such as water vapor and hydrocarbons is generated in the interstitial space of the solid matter, and the airflow resistance is high.

For this reason, there is a problem that the generated gas is unlikely to escape toward the channel outlet near points B and C shown in FIGS. 4C and 4D, and the internal pressure of the channel increases near points B and C. there were. The rise in internal pressure of the channel
This is particularly noticeable when the solid particles of the waste are fine and the ventilation resistance is relatively large even after pyrolysis and carbonization, or when the waste containing a large amount of moisture and volatile matter is processed and the amount of generated gas is large. Was.

If the internal pressure rises in the middle of the channel as described above, a pressure is applied to push the compression molded product toward the outlet of the channel. Therefore, the compressed molded product near point D in FIG. 5 occurs. However, the waste treatment facility shown in FIG. 3 sequentially pushes the compression-molded waste from the entrance of the tunnel-type heating furnace, and removes the carbonized product generated by drying, thermal decomposition, and carbonization in the tunnel-type heating furnace 4. By gradually extruding into the high-temperature reactor 5, a stable gasification reaction is achieved in the high-temperature reactor 5.

Therefore, as described above, if a phenomenon occurs in which the compression molded product near the point D is irregularly extruded into the high-temperature reactor 5 at one time, if the compression-molded product is not sufficiently thermally decomposed in the high-temperature reactor. Increases rapidly, causing problems such as temperature fluctuations in the high-temperature reactor and fluctuations in the gas composition.

[0021]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a waste treatment facility capable of stably treating waste.

[0022]

Means for Solving the Problems The present inventors have examined in detail the problems of the above-mentioned conventional waste treatment equipment, and passed the gas generated in the middle part of the tunnel type heating furnace to the high temperature reactor. As a result of studying an apparatus configuration that can be circulated without generating resistance and that can effectively prevent an increase in the internal pressure of the tunnel heating furnace, the present invention has been achieved.

That is, the present invention provides a compression apparatus 1 for compressing and molding waste, a tunnel heating furnace 4 for drying, pyrolyzing, and carbonizing the compression-molded product of the waste pushed from the compression apparatus 1; A waste treatment facility having a high-temperature reactor 5 for heat-treating a carbonized product obtained in a tunnel-type heating furnace 4 with an oxygen-containing gas to generate a melt and a fuel gas, wherein an inlet of the tunnel-type heating furnace 4 is provided. The outlet 4f has a larger cross-sectional area in the furnace of the tunnel heating furnace 4 than the outlet 4e, and external heating devices 6a, 6b, 8a, 8b.

The above-mentioned waste treatment equipment of the present invention is a waste treatment equipment which is not restricted by the inclination angle of the tunnel type heating furnace 4 with respect to the horizontal direction. May be made to flow toward the high-temperature reactor 5, or conversely, as an upward gradient, excess water is made to flow in the direction of the inlet 4 e of the tunnel-type heating furnace 4 to separately collect the excess water. It may be processed.

The waste treatment equipment according to a preferred embodiment of the present invention includes a compression device 1 for compressing and molding waste, and a drying and thermal decomposition of the compression molded product of the waste pushed from the compression device 1. , Carbonized horizontal tunnel heating furnace 4
And a high-temperature reactor 5 for heat-treating the carbonized product obtained in the tunnel-type heating furnace 4 with an oxygen-containing gas to generate a melt and a fuel gas. The outlet 4f has a larger cross-sectional area in the furnace of the tunnel heating furnace 4 than the inlet 4e of the tunnel heating furnace 4 and has external heating type on the upper and lower sides and both lateral sides in the peripheral wall direction of the tunnel heating furnace 4. (A preferred embodiment of the present invention) characterized by having a heating device 6a, 6b, 8a, 8b.

The waste treatment facility according to the preferred embodiment of the present invention is a waste treatment facility provided with the horizontal tunnel heating furnace 4 as described above. In addition, the waste treatment equipment of the present invention described above, the form of the expansion of the cross-sectional area in the furnace in the waste treatment equipment of the preferred embodiment of the present invention,
The tunnel type heating furnace 4 may be continuously expanded from the inlet 4e to the outlet 4f, or may be gradually expanded.

The cross-sectional area in the furnace may be increased in a single step near the boundary between the drying zone and the pyrolysis or carbonization zone, and the amount of generated gas such as water vapor or hydrocarbon may be reduced. It is effective to expand in many areas,
The form of the expansion is not particularly limited.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. The present invention relates to a waste treatment facility having a tunnel-type heating furnace, wherein the waste treatment facility is capable of preventing an increase in the furnace pressure of the tunnel-type heating furnace that affects the operation of the entire waste treatment facility. It is.

FIG. 2 (a) shows an example of a waste treatment facility according to the present invention in a side sectional view, and FIG.
FIG. In FIG. 2 (a), reference numeral 35 denotes an upper space formed in the tunnel type heating furnace (: channel) 4, and in FIG. 2 (b), 8a and 8b represent inside the side walls of the tunnel type heating furnace. The attached external heating type heating device is shown, and other symbols indicate the same contents as those in FIG.

Further, the heating devices 6a, 6b, 8a, 8b shown in FIG.
Is a gas heating method in which a high-temperature gas flows through pipes provided in the upper and lower furnace walls and both side walls of the tunnel heating furnace 4. As a heating method, an electric heater or the like can be used as appropriate. Tunnel type heating furnace 4 shown in FIG.
Has a square cross section inside the furnace (rectangular), the cross-sectional area in the tunnel heating furnace is larger on the outlet side than on the inlet side, and the compression molded product moves from the inlet side to the outlet side. Accordingly, a gap is formed around the compression molded product 10i, and the gap becomes larger.

The tunnel type heating furnace 4 has an inlet 4e to an outlet 4f.
Up to about 600 ° C., and during the movement of the compression molded product 10i and the temperature rise process, the compression molded product 10i is dried, thermally decomposed, and carbonized. The gas generated by the thermal decomposition of the compression molded product 10i is blown into the high temperature reactor 5 constantly maintained at 1000 ° C. or higher from a gap formed around the compression molded product 10i.

FIGS. 1 (a) to 1 (e) show that the waste 4 in the tunnel type heating furnace (: channel) 4 according to the present invention in which the channel 4 gradually expands upward from the inlet to the outlet. The process of drying, pyrolysis, and carbonization is schematically shown. 1A is a side sectional view of the inside of the tunnel heating furnace 4, and FIGS. 1B to 1E are points A and B in FIG. 1A, respectively.
A cross-sectional view of the inside of the tunnel type heating furnace 4 at a point, a point C, and a point D (a cross-sectional view orthogonal to a traveling direction of a compression-molded product) is shown, and points A, B, C, and D are tunnel-type. The distances from the entrance 4e of the heating furnace 4 are 0.2 m, 2.2 m, 4.2 m and 6.2 m, respectively.

In FIG. 1, 35 is an upper space formed in the tunnel heating furnace (: channel), 36 is a side space formed in the tunnel heating furnace (: channel), Reference numerals indicate the same contents as in FIG. The waste compression molded product charged at the inlet 4e of the channel 4 is:
It is pushed rightward from the left side in Fig. 1 (a).

In the channel shown in FIG. 1, since the channel gradually expands from the inlet 4e to the outlet 4f, as shown in FIGS. As it is extruded, a space (: upper space) 35 is formed mainly between the channel upper wall surface and the compression molded product, that is, in the upper part of the channel. For this reason, in particular, the gas generated by the drying and thermal decomposition easily escapes to the upper space 35 in the portion where the internal pressure has been increased by the generated gas, such as the point B and the point C.

In this case, if the heating of the channel is only on the upper and lower surfaces, the gas generated by heating on the lower surface of the compression molded product will not flow into the upper space 35, but will be present in the middle part in the vertical direction. Since the dry portion has a structure having moisture between solids, the air permeability is extremely poor, and it cannot flow into the channel upper space 35. For this reason, in the present invention, the channel 4 is heated by the heating devices 8a and 8b from both sides in addition to the upper and lower sides, and heat is input from the entire inner wall, so that the channels 4 on both sides of the compression molded product 10i are heated. By forming a gap (side space 36) by carbonizing the surface, the steam (gas) generated on the lower surface side of the compression molded product is dried and the gap (side space 36) on both sides of the carbonized waste is removed. It can be led to the upper space 35 via the upper space 35 and introduced into the high-temperature reactor 5.

Further, according to the present invention, the gas generated by drying and pyrolysis of the compression-molded product can be introduced into the high-temperature reactor 5 without providing the gas vent groove on the side surface of the channel 4. A local increase in pressure inside 4 can be avoided, and stable waste disposal can be achieved.

[0037]

EXAMPLES The present invention will be described below more specifically based on examples. Waste treatment was performed using the waste treatment facility of the present invention shown in FIGS. 1 and 2 and the conventional waste treatment facility shown in FIGS. 3 and 4. Table 1 shows the specifications of the tunnel type heating furnace 4 of the waste treatment equipment used.
Table 2 shows the specifications of the high-temperature reactor.

The treated waste is municipal waste having a water content of 30 wt% and a low calorific value of 2000 kcal / kg. Table 3 shows the temperature conditions of the tunnel heating furnace 4. The device numbers in Table 3 correspond to the device numbers in the specifications of the tunnel heating furnace shown in Table 1, and the heating temperature indicates the temperature of the wall surface, which is the heating surface.

Table 4 shows the operation results of the waste treatment performed under the above conditions. In Comparative Examples 1 and 2 using the waste treatment equipment of the prior art, in any case, at the beginning of the operation, the measured value of the pressure gauge 7 in the lower part of the furnace of the tunnel type heating furnace was 1.0 kgf / c.
m ² · G or less, it was possible to operate without problems,
After a lapse of 4 hours, the pressure measurement value in the lower part of the furnace of the tunnel heating furnace increased.

Thereafter, the measured pressure value is 2 to 4 kgf / cm.
^{While the} pressure fluctuated between ² · G, hydrocarbon gas as an undecomposed gas came to be mixed into the gas generated from the high-temperature reactor 5. On the other hand, in Examples 1, 2, 3, and 4 using the waste treatment equipment of the present invention, the pressure in the lower part of the furnace of the tunnel type heating furnace was as low as 1.0 kgf / cm ² · G or less and fluctuated. There was no problem and the operation was possible.

From the comparison between Example 1 and Example 2, the higher the temperature in the furnace of the tunnel heating furnace 4, the higher the processing speed. In the third and fourth embodiments, the tunnel heating furnace 4 is used.
This is a test in which the temperature of the wall surface is changed between the upper and lower wall surfaces and the side wall surface, but the temperature of the side wall surface is made higher as in Example 4 than the temperature of the upper and lower wall surfaces is made high as in Example 3. This can effectively increase the processing amount.

This is because, by increasing the amount of heat input from the side wall surface of the tunnel heating furnace 4, the escape path of steam generated below the tunnel heating furnace can be formed earlier, and the inside of the tunnel heating furnace can be formed. It is considered that the drying of the compression-molded product, which is a waste product, is promoted. As shown in the above embodiments, according to the present invention, the following (1) to (3)
It has become possible to obtain excellent effects.

(1) It is possible to prevent a local pressure increase in the furnace of the tunnel type heating furnace and to stably treat waste. (2) It is possible to prevent the carbonized product and gas from rapidly flowing into the high-temperature reactor from the tunnel-type heating furnace and discharging the undecomposed gas from the gas outlet of the high-temperature reactor. (3) The thermal efficiency of the tunnel heating furnace can be improved, and the amount of waste processed per unit volume of the tunnel heating furnace can be increased.

(4) There is no need to provide a gas vent groove on the side wall of the tunnel-type heating furnace, which is a gas escape path, so that equipment costs can be reduced. In the above-described embodiment, the example in which the cross section of the furnace inside the tunnel-type heating furnace is expanded upward from the inlet to the outlet is shown, but the downward or vertical direction from the inlet to the outlet or Even in the case of expanding in the lateral direction, a local pressure increase inside the tunnel heating furnace can be avoided, and stable waste disposal can be achieved.

[0045]

[Table 1]

[0046]

[Table 2]

[0047]

[Table 3]

[0048]

[Table 4]

[0049]

According to the present invention, waste can be stably treated, and the emission of undecomposed gas from the high-temperature reactor can be prevented.
Furthermore, it has become possible to improve the thermal efficiency of the tunnel heating furnace and increase the amount of waste processed per unit volume of the tunnel heating furnace.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a process of drying, pyrolyzing, and carbonizing waste in a tunnel heating furnace according to the present invention.

FIG. 2 is a sectional side view showing an example of the waste treatment equipment of the present invention.
(a) and the cross-sectional view (b) of AA part.

FIG. 3 is a side sectional view showing a conventional waste treatment facility.

FIG. 4 is a schematic view showing a process of drying, pyrolyzing, and carbonizing waste in a conventional tunnel heating furnace.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Compressor 2 Compression cylinder 3 Compression support board 4 Tunnel heating furnace (: channel) 4a Drying area of compression molding 4b Thermal decomposition and carbonization area of compression molding 4e Inlet of tunnel heating furnace (: channel) 4f Tunnel Outlet of heating furnace (: channel) 5 High temperature reactor 6a, 6b External heating type heating device attached to upper and lower walls of tunnel heating furnace 7 Pressure gauge at lower part inside tunnel heating furnace 8a, 8b Tunnel type External heating type heating device 10a, 10i Compression molded product 11i, 11n Carbonized compression molded product (: carbonized product) 12 Mixture of carbonized product and combustion residue 13a, 13b Oxygen-containing Gas inlet 14 Melt 14H Melt outlet 20 Waste inlet 21 Cover of waste inlet 30 Undried compression molded product 31 Undried part of compression molded product 32 Dry part of compressed molded product 33 Compression molded product Pyrolysis part 34 Carbonization of compression molded products Part 35 Upper space formed in tunnel heating furnace (: channel) 36 Side space formed in tunnel heating furnace (: channel) 40 Extrusion port for carbonized product of tunnel heating furnace (: channel) (: Charging product inlet into high-temperature reactor) 50 Rapid cooling device for exhaust gas discharged from high-temperature reactor 51 Gas purification device 52 Gas outlet of high-temperature reactor 53 Purified gas f ₁ Moving direction of compression molded product f ₂ Moving direction of carbonized product f ₃ Flow direction of pyrolysis gas generated in tunnel heating furnace (: channel) f ₄ Direction of blowing oxygen-containing gas into high-temperature reactor f ₅ Moving direction of compression cylinder f ₆ Moving direction of the compression support plate f ₇ Rotation direction of the lid of the waste input port H Distance between the upper inner wall and the lower inner wall of the tunnel heating furnace

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fumihiro Miyoshi 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Kawasaki Steel Corporation (72) Inventor Masayasu Fukui 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo (72) Inventor Masashi Shimizu 2-3-2 Uchisaiwai-cho, Chiyoda-ku, Tokyo F-term (reference) 3K061 AA16 AA18 AA23 AB02 AB03 AC01 CA07 CA11 FA02 FA26 4D004 AA46 CA03 CA24 CA26 CA27 CA29 CA42 CB01 CB05 CB15 CB31 CB32 CB42 CB45

Claims (1)

[Claims] 1. A compression device (1) for compression-molding waste,
A tunnel-type heating furnace (4) for drying, pyrolyzing, and carbonizing the waste molded product pressed from the compression device (1);
A waste treatment facility having a high-temperature reactor (5) that heat-treats a carbonized product obtained in the tunnel-type heating furnace (4) with an oxygen-containing gas to generate a melt and a fuel gas, The cross section of the tunnel heating furnace (4) is larger at the exit (4f) than at the entrance (4e) of the heating furnace (4), and is closer to the peripheral wall of the tunnel heating furnace (4). Waste treatment equipment characterized by having external heating type heating devices (6a, 6b, 8a, 8b) on four sides.