JP3465692B2 - Powdery waste heat treatment equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment apparatus for powdery waste, and more particularly to a heat treatment apparatus for heating and removing volatile organic substances such as dioxins contained in refuse incineration ash and the like. Is.

[0002]

2. Description of the Related Art Recently, it has been found that extremely highly toxic organic compounds such as dioxins are generated during refuse incineration, and environmental pollution caused by such compounds has become a serious problem. This dioxin is contained in incineration exhaust gas discharged from the refuse incinerator, fly ash collected from the exhaust gas, and main ash taken out from the incinerator.

Japanese Patent Publication No. 6-38863 discloses a method of decomposing this dioxin with various catalysts. Among them, there is also disclosed a method for catalytically decomposing by heating activated carbon used for capturing dioxin to gasify it, and a method for catalytically decomposing fly ash in an oxygen-deficient state. The specific structure of the device is not shown.

Japanese Patent No. 2512665 (JP-A-6-
159646), in an incineration ash treatment method for heating incineration ash discharged from a refuse incineration treatment facility to decompose organic chlorine compounds contained in the incineration ash, the incineration ash in the presence of lime is 350 to Heat at 550 ° C, then 25
A method for treating incinerated ash, which comprises rapidly cooling to 0 ° C. or lower, is disclosed. The apparatus used for this incineration ash treatment is a horizontal rotary kiln type.

In Japanese Unexamined Patent Publication No. 2000-16844, a material containing dioxin is heated to a temperature not lower than the boiling point of dioxin, and a gas containing volatile dioxin is introduced into a rotary kiln for burning cement to heat the cement. Discloses a method of thermally decomposing dioxin.

The present inventors previously established that the lower portion of the side surface of the vertical cylinder is a heating portion, and the bottom portion is provided with a gas inlet for flowing powdery waste and a powdery waste outlet after heat treatment, A heat treatment device having a powder waste input port and an outlet for the gas was developed at the upper part, and the contents of the heat treatment device were applied for a patent (Japanese Patent Application Nos. 2000-393940 and 2000-3339).
No. 41).

[0007]

When the dioxin volatilization operation is continued using this heat treatment apparatus, it is possible to remove dioxin at a high rate.
It turned out that it is not easy to remove near to 00%.

The inventors of the present invention have conducted extensive studies to solve this problem, and as a result, some of the thrown powdery wastes have a short residence time in the heater, which is effective for complete removal of dioxins and the like. It has been found that it is a difficult cause. This is the result obtained by continuously inputting and extracting the powdery waste. Therefore, the present inventors
When a so-called batch treatment was performed in which the powdered waste was charged and then heating was stopped by stopping charging and discharging, almost complete volatilization removal of dioxins and the like could be achieved. However, this method has poor processing efficiency and is not practical. Therefore,
The inventors of the present invention conducted further studies and thought that it would be possible to reduce the amount of volatile removal leakage due to the above-mentioned shortcut if the powdery waste is removed from the heater intermittently. The result was better than expected.

Therefore, the inventors of the present invention use a cylindrical vertical heater in which a gas for flowing powdery waste is blown from the lower part, and the powdery waste is put in from the upper part of the heater and taken out from the lower part. In this method, we developed a heat treatment method for powdery waste, which is characterized by intermittently extracting powdery waste from this lower part.

However, in order to carry out this method,
There is a need for a means to easily detect the proper time for withdrawing powdery waste from the bottom.

[0011]

Therefore, the inventors of the present invention further studied to develop this means, and as a suitable means for this, change in differential pressure between the gas injection pressure and the fluidized bed above the powdery waste. We have developed a method that uses the temperature, a method that uses the temperature change below the powder waste input port, and a method that installs a level meter inside the heater.

That is, when the fluidized bed surface of the powdery waste of the heater becomes higher, the differential pressure between the gas injection pressure and the upper space above the fluidized bed surface becomes higher, and when the fluidized bed surface becomes lower, the differential pressure becomes lower.
Further, since the powdery waste is charged at a temperature considerably lower than the heating temperature, the temperature of the charging part space is considerably lower than that of its surroundings. However, when the fluidized bed surface becomes high and the fluidized bed surface rises in the space, the temperature rises suddenly because the fluidized bed surface temperature is reached. Further, if a level meter is provided in the heater, the fluidized bed surface can be directly measured.

The present invention has been made on the basis of these findings, and has a gas discharge port and a powdery waste input port at the top, and a gas inlet and a powder for flowing powdery waste at the bottom. In a vertical cylindrical heat treatment apparatus having a solid waste outlet and further having an agitating means inside and a heating means at least in the lower part of the outer periphery, the differential pressure between the gas blowing pressure and the pressure above the fluidized bed of the powdery waste is adjusted. The pressure measuring device to be detected and the signal from the pressure measuring device are compared with the differential pressure range input in advance, and when the upper limit thereof is exceeded, the valve of the powdery waste outlet is opened, or A refuse incineration ash, characterized in that a control device is provided to close the valve at the input port and open the valve at the powdery waste input port or close the valve at the outlet when the lower limit is exceeded. Volatile removal of dioxin etc. contained in powdered waste such as A continuous heat treatment device, a gas discharge port and a powdery waste input port at the top, a gas inlet for flowing the powdery waste and a powdery waste outlet at the bottom, and a stirring means inside In a vertical cylindrical heat treatment apparatus having a heating means at least in the lower part of the outer periphery, two thermocouples are provided below the powdery waste input port, one of which is a preset fluidized bed upper surface of the powdery waste. Place it in the upper limit position,
The other is placed at the lower limit position, and when the signal from the thermocouple placed at the upper limit position exceeds a preset value, the powdery waste outlet valve is opened or the charging port is opened. If the signal from the thermocouple placed at the lower limit is lower than the preset value, open the valve of the powdery waste input port or close the valve of the outlet. A continuous heat treatment device that volatilizes and removes dioxin etc. contained in powdered waste such as refuse incineration ash, etc., which is equipped with a control device to instruct, and a gas discharge port and powdered waste input port on the upper part Which is equipped with a gas inlet for flowing the powdery waste and a powdery waste outlet at the bottom, and further has an agitating means inside and a heating means at least at the lower part of the outer periphery in a vertical cylindrical heat treatment apparatus. Upper limit of the fluidized bed upper surface of the powdery waste Position level meters such as rotary level meters, ultrasonic wave level meters, or infrared ray level meters at the lower and upper limit positions, and the signal from the level meter at the upper limit position is the preset value. If it exceeds, open the valve of the powdery waste outlet or close the valve of the input port, and if the signal from the level meter placed at the lower limit position becomes lower than the preset value A volatile removal of dioxin etc. contained in powder waste such as refuse incineration ash, characterized by having a control device for instructing to open the valve of the powder waste input port or close the valve of the outlet The present invention relates to a continuous heat treatment apparatus for

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The vertical cylinder is for containing powdery waste to be heat-treated, and the shape may be a straight cylinder or a different diameter cylinder having a taper portion and having an upper or lower portion with a short diameter. . Both the upper and lower sides are closed and the whole has a closed structure.
Both the upper and lower surfaces are flat, curved, conical, or the like. The volume is designed according to the amount of powdery waste to be treated, etc., but is usually about 0.2 to 10 m ³ . The L / D ratio is 0.2
It is about 3 to 3, preferably about 0.5 to 2.

The lower part of the side surface of the heater composed of this vertical cylinder serves as a heating part for heat-treating the powdery waste. The heating method may be any of a method of heating from the outer surface of the cylinder, a method of providing a heater inside, a method of using hot air as a gas for flowing the powdery waste, and the like.

The gas for flowing the powdery waste also has a transfer function for discharging dioxins and the like vaporized by heating, and it is preferable to use air, nitrogen, exhaust gas from incineration or the like. The gas inlet is provided at the bottom of the heater, that is, at the bottom or the lower end of the side surface. A plurality of gas inlets may be provided depending on the scale of the heater, that is, the volume of the vertical cylinder, and it is also preferable to use a single or double or more ring sparger type. Gas plate 3 has a perforated plate (perforated plate) 3
2 can be provided to make the gas blowing uniform and prevent the powdery waste from entering the blow-in port 3.

An outlet for the heat-treated powdery waste is also provided at the bottom of the heater, that is, at the bottom or the lower end of the side surface.

Although the powdery waste input port is provided in the upper part of the heater, it is preferably installed near the upper surface of the fluidized bed of the powdery waste formed in the heater. As shown in FIG. 1, a guide tube 53 may be extended downward from the connection end 52 of the powdery waste input pipe 51, and the powdery waste input pipe 51 may be connected to the fluidized bed on the side surface of the heater. It may be connected near the upper surface. In that case, if necessary, a guide tube can be provided to move the powdery waste input portion to the center side inside the heater. Although the tip of this guide tube is bent downward, it need not be bent. The upper surface of the fluidized bed of the powdery waste can be controlled by the supply rate and the discharge rate of the powdery waste, the amount of gas blown, and the like. Providing the powdery waste input port near the upper surface of the fluidized bed is such that the higher it is, the solidified adhered amount of vaporized dioxins and the like increases, and the lower it is, the vaporization removal of dioxins and the like remains insufficient. This is because the rate of discharge is increased, and it suffices to install the inlet in a range where these problems do not occur.

The gas outlet is also provided in the upper part of the heater, but if it is brought too close to the upper surface of the fluidized bed, the amount of the powdery waste that scatters will increase and the dust filter will be clogged immediately. Is preferred. If necessary, a dust filter or a dust removing device such as a cyclone is provided at the gas outlet.

It is preferable to provide a stirrer to assist the formation of the fluidized bed and to prevent the powdery waste from adhering to the inner wall of the heater.

The heater used in the present invention is not limited to the above-mentioned heater, but is a cylindrical vertical heater of any type in which a gas for flowing powder waste inside is blown from below. Even available.

A first aspect of the heat treatment apparatus of the present invention is, in such an apparatus, a pressure measuring device for detecting a differential pressure between the gas blowing pressure and the pressure above the fluidized bed of the powdery waste, The signal from the pressure measuring device is checked against the differential pressure range input in advance, and when the upper limit is exceeded, the valve of the powdery waste outlet is opened, and when the lower limit is exceeded, the powder is discharged. The feature is that a control device is provided to instruct to open the valve of the solid waste input port.

A commercially available pressure gauge can be used for this pressure measuring device. One or more pressure measuring devices may be installed on the gas blowing side and above the fluidized bed of the powdery waste to measure each differential pressure to obtain the difference, or with a pressure manometer or the like by pulling out conduits from both. The differential pressure may be measured directly. The pressures on the gas injection side and above the fluidized bed of powdered waste only need to be able to measure the differential pressure between the upper and lower sides of this fluidized bed.On the gas injection side, in addition to the pressure in the space below the bottom of the fluidized bed in the heater, The pressure of the gas blowing pipe may be used. The pressure above the fluidized bed may be not only the space above the upper surface of the fluidized bed in the heater but also the pressure of the gas discharge pipe.

A commercially available computer can be used as the control device. The differential pressure serves as an index of the position of the upper surface of the fluidized bed.If the upper surface of the fluidized bed becomes too high, not only the fluidity is impaired, but also clogging of the filter installed at the gas outlet and powdery waste. Disposal of goods also occurs. On the other hand, if the upper surface of the fluidized bed becomes too low, the heat treatment time becomes short and the heat treatment becomes insufficient. The upper limit and the lower limit of the differential pressure are set in consideration of these.

To lower the top of the fluidized bed, loosen or completely open the valve at the powder waste outlet. At this time, this lowering can be further promoted by squeezing or completely closing the valve of the powdery waste input port. To raise the top of the fluidized bed, loosen or completely open the powder waste inlet valve. At this time, the rise can be further promoted by throttling or completely closing the valve of the powdery waste outlet.

In a second aspect of the heat treatment apparatus of the present invention, two thermocouples are provided below the powdery waste input port, one of which is a preset fluidized bed upper surface of the powdery waste. Of the powdery waste outlet when the signal from the thermocouple placed at the upper limit position exceeds the preset value. Is opened, and when the signal from the thermocouple placed at the lower limit position becomes lower than a preset value, a controller is provided to instruct to open the valve of the powdery waste input port. There is.

As the thermocouple, a commercially available product may be used. The position of the upper surface of the fluidized bed is monitored by these two thermocouples, and when the upper limit or the lower limit is exceeded, the above-mentioned control is performed by a command from the control device.

In the third aspect of the heat treatment apparatus of the present invention, a rotary type level meter, an ultrasonic wave type level meter or an infrared ray is set at the upper limit position and the lower limit position of the upper surface of the fluidized bed of the powdery waste set in advance, respectively. If a level meter such as a usage type level meter is placed and the signal from the level meter placed at the upper limit position exceeds the preset value, open the powder waste outlet valve and move it to the lower limit position. It is characterized in that a control device is provided for instructing to open the valve of the powdery waste input port when the signal from the arranged level meter becomes lower than a preset value.

The position of the upper surface of the fluidized bed is monitored by these two level meters, and when the upper limit or the lower limit is exceeded,
The above-mentioned control is performed according to a command from the control device.

The powdery waste treated in the present invention is not particularly limited as long as it is heat-treated, and examples thereof include incinerated ash (main ash) and fly ash discharged from a refuse incinerator.

The heating temperature is a temperature at which the heating purpose is achieved. For example, in the case of volatilizing and removing dioxin, the heating temperature is 35.
It is preferably about 0 to 550 ° C, particularly preferably about 400 to 450 ° C. The heat treatment may be one in which dioxin decomposition and removal such as slaked lime is put into a heater to decompose dioxin and the like, in which case, the heating temperature is about 300 to 500 ° C.,
It is preferably about 400 to 450 ° C. The gas flow rate and air velocity are set so that the powdery waste can stay in the heater for the required time to achieve the heat treatment purpose.

The apparatus of the present invention can be used in any method that needs to detect the upper surface of the fluidized bed, but is particularly effective in a method of intermittently withdrawing powdery waste from the lower part of the heater. is there.

This is to prevent the powdery waste that has been charged during that period from being discharged while the heat treatment is inadequate by suspending the extraction.
It is preferable that the time during which the withdrawal is stopped be made as long as possible, depending on other circumstances such as the volume of the heater. Practically, one stop time is about 1 to 60 minutes, preferably 5 to 1
It is good to set it to about 5 minutes. On the other hand, it is preferable to shorten the extraction time as much as other circumstances allow,
Practically, the charging time for one time is about 1 to 30 minutes, preferably about 1 to 10 minutes. The stopping time for each time may be different, but is usually the same. The same applies to the extraction time.

On the other hand, although the powdery waste may be continuously supplied, the effect can be further enhanced by intermittently supplying the powdery waste. In that case, it is preferable that the charging and the discharging are performed alternately so that at least one of them is stopped. As a result, the one-time charging time is shortened to the above-mentioned withdrawal stop time or shorter. That is, it is not necessary for one to be done at all times, but rather it is preferable that there is a time when both are stopped. Practically, the charging time for one time is about 1 to 60 minutes, preferably about 5 to 15 minutes.

[0035]

EXAMPLE FIG. 1 shows a powdery waste heater which is an example of the present invention. In this heater, a lower portion of a side surface of a vertical cylinder 1 is a heating unit 2, and a gas inlet pipe 31 for flowing powdery waste and a discharge pipe 41 for heat-treated powdery waste are connected to a bottom surface. The respective openings are a gas inlet 3 and a powdery waste outlet 4.

Further, a powdery waste input pipe 51 and a gas exhaust pipe 61 are connected to the upper surface of the vertical cylinder 1. A guide pipe 53 is extended downward from a connection end 52 of the powdery waste input pipe 51, and the powdery waste input port 5 is lowered from the connection end 52 to the upper surface 71 of the fluidized bed 7 of the powdery waste. . The end of the gas discharge pipe 61 connected to the upper surface is the gas outlet 6. This gas outlet 6 is provided at two places, and a dust filter 62 is attached inside the heater in both cases. This gas outlet 6 is a switching valve 6 provided in the gas discharge pipe 61.
It can be switched by 3 and used alternately.

Inside the heater, a stirrer 8 including a multi-stage stirring blade 81 is provided. The stirrer 8 prevents stirring of the powdery waste and adhesion to the inner wall of the heater.

The upper surface 7 of the powdery waste fluidized bed 7 of this heater
Pressure gauges 91 and 92 are installed above 1 and below the fluidized bed, and a control device 10 that receives a signal from the pressure gauges 91 and 92 and monitors the differential pressure thereof is provided. This control device 10
A command to open the valve 42 of the powdery waste discharge pipe 41 when this differential pressure exceeds the previously input upper limit and to open the valve 54 of the powdery waste input pipe 51 when it exceeds the lower limit. To do.

When the powdery waste was put into and taken out of the above heater under the condition I, condition II or condition III in FIG. 8, the changes in differential pressure shown in FIG. 3 were obtained. Therefore,
Under the condition II, if the valve 42 at the powdery waste outlet is opened and closed with the peak and valley of the change in the differential pressure as the upper limit or the lower limit, the extraction under the condition II will be performed. The same applies to condition III.

Next, the thermocouple 11 was installed in the heater at the positions A, B and C in FIG. 2 (B). A is above the fluidized bed surface of the input part of the powdery waste, B is below, and C is below the fluidized bed surface outside the input part.

When the powdery waste is put into and taken out of the above heater under the condition I, the condition II or the condition III of FIG. 8, the condition I is shown in FIG. 4, the condition II is shown in FIG. 5, and the condition III is shown in FIG. The indicated temperature change was obtained. Therefore, under condition II, the valve 42 at the powdery waste outlet should be opened at the peak of the thermocouple A and closed at the peak of the valley of the thermocouple B. This also applies to the condition III.

FIG. 7 shows the result of a confirmation test conducted under condition II with the ultrasonic sensor 12 attached to the position of the heater shown in FIG. 2 (C).

FIG. 9 shows an example of equipment for heat-treating fly ash generated in a refuse incinerator using the heat treatment apparatus of the present invention. This equipment consists of fly ash storage tank, fly ash heater, catalytic reactor,
It consists of an activated carbon adsorption tower and a fly ash kneader. The fly ash collected from the waste gas from the refuse incinerator is once put into a fly ash storage tank, and from there is put into a fly ash heater by a fly ash cutting conveyor. In the heater, the fly ash is fluidized by the gas blown from the bottom of the heater, descends while being stirred by the stirrer, and is discharged from the outlet. At that time, the differential pressure between the pressure in the space below the fly ash fluidized bed and the pressure in the space above the fluidized bed was continuously measured and input to a limiting device, and the differential pressure exceeded a preset upper limit. In this case, the fly ash inlet valve is closed and the fly ash outlet valve is opened by the command of this control device.If the differential pressure exceeds the lower limit, the fly ash inlet valve is opened and the fly ash outlet valve is opened. Is designed to close. In this way, the heat-treated fly ash is carried out by the carry-out conveyor, kneaded by the fly ash kneader with the fly ash stabilizer supplied from the fly ash stabilizer tank, and carried out as treated fly ash. On the other hand, the gas containing the volatilized dioxin and the like is removed by the bag filter and discharged from the heater, and the dioxin and the like is decomposed in the catalytic reactor. Then, the residual dioxin and other harmful substances are adsorbed and removed in the activated carbon adsorption tank and released into the atmosphere.

[0044]

According to the present invention, when the powdery waste is heat-treated in the fluidized bed, the position of the upper surface can be easily monitored and the operation can be properly continued. Further, the present invention is particularly effective for a method of intermittently extracting powdery waste by carrying out this heat treatment, whereby the heat treatment efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a heater of a heat treatment apparatus which is an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state in which a pressure measuring device (A), a thermocouple (B) or a level meter (C) is attached to this heater.

FIG. 3 is a graph showing fluctuations in differential pressure obtained by performing heat treatment under the conditions of FIG. 8 using the heater of FIG. 2 (A).

FIG. 4 is a graph showing temperature changes at points A, B, and C in the figure obtained by performing heat treatment under the condition I of FIG. 8 using the heater of FIG. 2 (B).

5 is a graph showing temperature changes at points A, B, and C in the figure obtained by performing heat treatment under the condition II of FIG. 8 using the heater of FIG. 2 (B).

FIG. 6 shows the condition III of FIG. 8 using the heater of FIG. 2 (B).
It is a graph which shows the temperature change of the A point, the B point, and the C point in the figure obtained by performing the heat treatment in FIG.

7 is a graph showing an ultrasonic sensor signal obtained by performing heat treatment under the condition II of FIG. 8 with time using the heater of FIG. 2 (C).

FIG. 8 is a graph showing a time schedule of three conditions of inputting and extracting powdery waste, which is performed in the example of the present invention.

9 is a diagram showing an example of the configuration of a heat treatment apparatus using the heater of FIG.

[Explanation of symbols]

1 ... Vertical cylinder 2 ... Heating section 3 ... Gas inlet 31 ... Gas inlet pipe 32 ... Perforated plate 4 ... Powder waste outlet 41 ... Discharge pipe 42 ... valve 5 ... Powder waste input port 51 ... Input pipe 52 ... Connection end 53 ... Guide tube 54 ... valve 6 ... Gas outlet 61 ... Discharge pipe 62 ... Dust filter 63 ... Switching valve 7 ... Fluidized bed 71 ... Top surface 8 ... Stirrer 81 ... Stirrer 9 ... Pressure measuring device 91 ... Pressure measuring device 92 ... Pressure measuring device 10 ... Control device 11 ... Thermocouple 12 ... Level meter

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-34109 (JP, A) JP-A-59-81414 (JP, A) JP-A-58-60102 (JP, A) JP-A-8- 294623 (JP, A) JP 7-328595 (JP, A) JP 7-328583 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A62D 3/00 B01J 8 / 24-8/44 B09B 3/00 F23J 1/00

Claims (5)

(57) [Claims] 1. A gas discharge port and a powdery waste input port are provided at an upper part, a gas introduction port for allowing the powdery waste to flow and a powdery waste outlet are provided at a bottom part, and a stirring means and at least an inside are provided at least. In a vertical cylindrical heat treatment apparatus having a heating means in the lower outer periphery, a pressure measuring device for detecting a pressure difference between the gas blowing pressure and a pressure above the fluidized bed of the powdery waste, and a signal from the pressure measuring device. Is checked against the differential pressure range input in advance, and when the upper limit is exceeded, the valve for the powdery waste outlet is opened, or the valve for the input port is closed, and when the lower limit is exceeded, A volatile removal of dioxin etc. contained in powder waste such as refuse incineration ash, characterized by having a control device for instructing to open the valve of the powder waste input port or close the valve of the outlet Continuous heat treatment equipment 2. An upper part is provided with a gas discharge port and a powdery waste input port, and a bottom part is provided with a gas introduction port for flowing the powdery waste and a powdery waste outlet, and an agitation means and at least an internal stirring means. In a vertical cylindrical heat treatment apparatus having a heating means in the lower part of the outer periphery, two thermocouples are provided below the powdery waste input port, one of which has an upper limit on the upper surface of the fluidized bed of the powdery waste set in advance. Position, the other one is located at the lower limit position, and the valve of the powdery waste outlet is opened when the signal from the thermocouple located at the upper limit position exceeds a preset value. Or, if the signal from the thermocouple placed at the lower limit is closed and the input port valve is closed, the powder waste input port valve is opened or the outlet is opened. A control device for instructing to close the valve of Continuous heat treatment device that volatilizes and removes dioxin etc. contained in powdered waste such as refuse incineration ash 3. A gas discharge port and a powdery waste input port are provided at the top, a gas inlet for flowing the powdery waste and a powdery waste outlet are provided at the bottom, and a stirring means and at least an inside are provided at least. In a vertical cylindrical heat treatment apparatus having a heating means in the lower part of the outer periphery, a rotary level meter, an ultrasonic wave type level meter, or an infrared ray type is set at the upper limit position and the lower limit position of the fluidized bed upper surface of the powdery waste set in advance, respectively. If a level meter such as a level meter is placed and the signal from the level meter placed at the upper limit position exceeds the preset value, open the valve for the powdery waste outlet or If the signal from the level meter placed at the lower limit position is lower than the preset value by closing the valve, command to open the valve of the powdery waste input port or close the valve of the outlet. Features a control device A continuous heat treatment device that volatilizes and removes dioxin etc. contained in powdered waste such as refuse incineration ash. 4. The powdery waste heat treatment apparatus according to claim 1, further comprising a catalytic reactor for processing the gas discharged from the powdery waste heat treatment apparatus. 5. The powdery waste according to claim 1, further comprising a catalytic reactor for processing gas discharged from the powdery waste heat treatment device and an activated carbon adsorption tower. Heat treatment equipment