JP2001336720A - Facility for gasifying/melting refuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facility for gasifying/melting refuse in which flyash can be reduced in volume while stabilizing heavy metals contained therein without complicating operation management and without producing matters adhering to the flue at the outlet of a high temperature gasifying/melting furnace. SOLUTION: The facility for gasifying/melting refuse comprises a high temperature gasifying/melting furnace 10 having means for loading refuse and coke in which a coke layer 70 is formed on the bottom part in order to burn coke and refuse is loaded onto the coke layer 70 for pyrolysis, and a turning melting furnace 30 coupled with the gas discharge port 13 of the high temperature gasifying/melting furnace 10 and provided with a plurality of nozzles 32 for blowing oxygen containing gas at the side part thereof in which a swirl flow is formed internally when gas is blown in from the plurality of nozzles 32 in order to combust pyrolysis gas introduced from the high temperature gasifying/ melting furnace 10 and to melt flyash carried on the pyrolysis gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste gasification and melting treatment facility for thermally decomposing and gasifying waste and melting and discharging the residue.

[0002]

2. Description of the Related Art Most waste is disposed of in landfills or landfilled after incineration. However, as it becomes more difficult to secure final disposal sites year by year, even incineration residues are reduced. Consolidation has been required. Further, fly ash among the waste incineration residues contains harmful metals, and therefore, when landfill, it must be treated to stabilize the harmful metals.

[0003] In recent years, in addition to the above-mentioned problems relating to environmental loads, effective use of resources has been called for, and there has been a demand for an improvement in the heat recovery rate when treating waste.
As a technology that can simultaneously solve the problem relating to the environmental load and the problem of improving the heat recovery efficiency, technology for gasifying and melting waste is being developed.
This treatment technology pyrolyzes waste and gasifies it,
High-temperature combustion gas can be generated, and the pyrolysis residue of waste is melted and discharged, so that harmful metals are melted and confined in slag, and are characterized by being stabilized. ing.

[0004] There are several methods for gasifying and melting waste. One of the methods is to burn a coke deposited on a furnace bottom to form a high-temperature coke layer, and dispose the waste on this. There is a method in which an object is charged and gasified and melted.
According to this method, a vertical furnace is used.

[0005] Gasification and melting treatment of waste by a vertical furnace is performed as follows. Auxiliary materials such as coke and limestone are charged together with the waste, and a coke layer is formed at the bottom of the furnace. Then, air or oxygen-enriched air is blown into the coke layer to burn coke, and while forming a high-temperature combustion zone, waste is thrown thereon. The input waste stays on the high-temperature coke layer and is thermally decomposed while being preheated to generate a flammable pyrolysis gas. This pyrolysis gas is partially burned in a gasification and melting furnace, and then sent to a secondary combustion furnace to burn, and is turned into a high-temperature gas and sent to a heat recovery device. The heat-recovered exhaust gas is sent to a harmful gas removing step to be purified, and then sent to a dust collecting step to remove dust (fly ash) and emit it. On the other hand, the residue obtained by gasification of the waste falls into the high-temperature combustion zone and melts, flows as molten slag, flows down through the coke layer, accumulates at the furnace bottom, and is discharged.

As described above, even when waste is gasified and melted, fly ash is discharged from the gasification and melting furnace and collected in a dust collector or the like. For this reason, similarly to the case where waste is incinerated, the discharged fly ash must be treated to stabilize harmful metals contained therein.

Conventionally, the following techniques have been proposed to solve the above-mentioned problems. JP-A-11-101
No. 430 discloses that the basicity of fly ash is adjusted to a predetermined range by adding a component adjuster such as lime powder or quartz powder to fly ash discharged from a gasification melting furnace and collected in a gas treatment system. Then, a method is disclosed in which the molten metal is blown into a furnace from a tuyere provided in a lower part of the furnace to be melted, and discharged as molten slag from the lower part of the furnace.

Japanese Unexamined Patent Application Publication No. 11-141827 discloses a method for preventing fly ash from re-scattering because a large amount of fly ash re-scatters when the fly ash is directly charged into a melting furnace. Have been. This method is a method in which dust generated in a waste gasification and melting furnace is solidified and granulated, then put into the melting furnace again to be melted, and discharged as molten slag from the lower part of the furnace.

[0009]

However, there is room for improvement in any of the above prior arts.

In the method disclosed in JP-A-11-101430, fly ash is blown into the lower part of a melting furnace maintained at a high temperature, so that most fly ash is quickly melted and discharged as molten slag. If the amount of fly ash blown exceeds a certain limit, the temperature around the tuyere into which the fly ash is blown drops to a level outside the allowable range, and the furnace condition in the lower part of the melting furnace becomes abnormal.
Further, in this method, when the fly ash is melted, in order to make the melt have an appropriate fluidity, a component adjuster is added according to the component fluctuation of the fly ash sent from the dust collector. In addition, the basicity of the fly ash to be blown must be adjusted, and the operation management becomes complicated.

In the method disclosed in Japanese Patent Application Laid-Open No. 11-141827, an apparatus for granulating fly ash to be returned to a melting furnace is provided.
The problem is that the operation must be managed. When granulating fly ash, it is necessary to take measures such as adjusting and changing the operating conditions of the granulating device sequentially according to the properties of the fly ash collected and sent by the dust collector. Management becomes complicated.

Further, there is a problem common to any of the above prior arts. That is, in a processing facility for gasifying and melting waste at a high temperature, in order to decompose dioxins in the pyrolysis gas generated in the high-temperature gasification and melting furnace, the combustible pyrolysis gas is partially burned to 850. After the temperature is kept at a high temperature of not less than ° C., the gas is sent to the secondary combustion furnace. However, the temperature of the combustible gas sent to the secondary combustion furnace varies greatly, which may make the operation difficult.

That is, waste, especially municipal waste,
It is a mixture of miscellaneous things, and their shapes and calorific values are very different, so the composition of the pyrolysis gas generated greatly fluctuates, and the fluctuation of the gas temperature when the pyrolysis gas is partially burned is also growing. When the pyrolysis gas is partially burned, the gas temperature must be maintained at 800 ° C. or higher, so that the gas temperature after combustion fluctuates in a high temperature range of 800 ° C. or higher. The temperature of the gas sent from the gasification and melting furnace to the secondary combustion furnace is 1000 ° C
May be exceeded.

However, as described above, fly ash is accompanied when the pyrolysis gas is discharged from the high temperature gasification and melting furnace, and the fly ash contains salts having a relatively low melting point. Therefore, when the gas temperature exceeds 1000 ° C., a part of the fly ash is melted and becomes in a sticky state. And
The melted fly ash adheres to the inner wall of the flue and solidifies when the gas temperature drops. When the gas temperature fluctuates frequently as described above, the thickness of the deposits formed on the inner wall of the flue gradually increases, the flue is narrowed, and finally the operation becomes inoperable.

The present invention solves the above-mentioned problems and reduces the volume of fly ash without complicating operation management and generating no deposits on the flue at the outlet of the high temperature gasification and melting furnace. It is an object of the present invention to provide a waste gasification and melting treatment facility capable of stabilizing heavy metals contained therein.

[0016]

The above object is achieved by the following invention. The invention according to claim 1 has means for charging waste and coke, forms a coke layer on the bottom thereof, burns coke, and charges waste on the coke layer to pyrolyze the waste. A high-temperature gasification / melting furnace to be provided, and a plurality of nozzles provided to be connected to a gas outlet of the high-temperature gasification / melting furnace, and having a plurality of nozzles for blowing an oxygen-containing gas on a side portion thereof. A swirling melting furnace configured to form a swirling flow, configured to burn the pyrolysis gas introduced from the high temperature gasification and melting furnace and to melt fly ash entrained by the pyrolysis gas. It is characterized by having.

According to a second aspect of the present invention, in the first aspect of the present invention, an air blowing tuyere is provided at an upper portion of the high temperature gasification and melting furnace for partially burning a pyrolysis gas generated in a lower portion of the furnace. A device for controlling the flow rate of air supplied to the air blowing tuyere, a temperature measuring device for measuring the temperature of the pyrolysis gas in the flue at the inlet of the swirling melting furnace, and an air blowing tuyere so that the temperature becomes a predetermined value. And a control mechanism configured to adjust the flow rate of the air supplied to the air conditioner.

According to a third aspect of the present invention, in the first aspect of the present invention, an air supply pipe connected to an oxygen-containing gas pipe attached to an oxygen-containing gas injection nozzle provided on a side portion of the rotary melting furnace, and an oxygen supply pipe. A supply pipe, a flow control device provided in each of the air supply pipe and the oxygen supply pipe, a temperature measurement device for measuring a temperature of the combustion gas in the swirling melting furnace, and a combustion gas discharged from the swirling melting furnace. An oxygen concentration measuring device for measuring the oxygen concentration, and a control mechanism configured to adjust the air supply flow rate and / or the oxygen supply flow rate so that the temperature and the oxygen concentration of the combustion gas in the swirling melting furnace become predetermined values, respectively. It is characterized by having.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the amount of coke charged into the high temperature gasification and melting furnace is adjusted so that the temperature of the combustion gas in the swirling melting furnace becomes a predetermined value. A control mechanism configured to adjust is added.

In the present invention, a swirling melting furnace is provided so as to be connected to the gas outlet of the high-temperature gasification and melting furnace, so that the pyrolysis gas discharged from the high-temperature gasification and melting furnace is burned in the swirling and melting furnace. Has become. In this swirling melting furnace,
If the temperature in the furnace is maintained above the melting point of the fly ash, the fly ash entrained by the pyrolysis gas becomes a melt, and the heavy metals contained in the fly ash are melted and fixed, and stabilized. You. Then, the molten fly ash is separated from the combustion gas and discharged as molten slag.

In the present invention, the amount of air blown for partially burning the pyrolysis gas generated in the high-temperature gasification and melting furnace based on the temperature of the pyrolysis gas in the flue at the entrance of the swirling melting furnace. Is adjusted so that the gas temperature in the flue is maintained at a predetermined value. If the temperature in the flue at the entrance of the swirling melting furnace is normally maintained within a range not exceeding 1000 ° C., the fly ash scattered from the high-temperature gasification melting furnace will not be partially melted, and the inner wall of the flue will not be melted. The phenomenon that fly ash adheres to the surface does not occur. Adjustment of the amount of combustion when the pyrolysis gas is partially burned in the high temperature gasification and melting furnace is performed based on the gas temperature of the pyrolysis gas at the inlet of the swirling melting furnace. This is because a change in gas temperature can be sequentially detected.

The melting point of fly ash discharged from the high temperature gasification and melting furnace varies depending on the composition of the fly ash, but is usually about 1000 ° C. to 1150 ° C. Therefore, when the fly ash is to be melt-processed, the temperature in the swirling melting furnace is set to 1200 ° C. to 1300
Combustion conditions must be adjusted to about ℃. For this reason, in the present invention, oxygen in addition to air can be supplied to the swirling melting furnace, and the temperature in the swirling melting furnace can be maintained at or above the melting point of fly ash by appropriately adjusting the flow rates thereof. It has become.

Further, as described above, when waste such as municipal solid waste is treated in a high-temperature gasification and melting furnace, the waste to be introduced is a mixture of various substances, and thus the generated heat of the pyrolysis gas is generated. The amount may drop significantly. When such a pyrolysis gas having a low calorific value is introduced into the swirling melting furnace, a considerably large amount of oxygen must be supplied in order to maintain the gas temperature after combustion at a predetermined value. For this reason,
In the case of treating waste containing low calorific value, the operating cost increases.

Therefore, in the present invention, an upper limit is set for the oxygen concentration (a value calculated from the flow rate of air and the flow rate of oxygen) in the oxygen-containing gas (mixed gas of air and oxygen) blown into the swirling melting furnace. If the temperature of the combustion gas does not reach the predetermined value even when the oxygen concentration reaches the upper limit, the amount of coke charged into the high temperature gasification and melting furnace is increased. Then, the amount of combustible gas generated in the high-temperature gasification and melting furnace increases due to the increase in the charged coke, and the pyrolysis gas having an increased calorific value is sent to the swirling melting furnace.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of an example of a waste gasification and melting treatment facility according to an embodiment of the present invention. 10
Is a high temperature gasification and melting furnace for waste, 11 is a vertical and cylindrical gasification and melting furnace main body, 30 is a furnace for burning the pyrolysis gas introduced from the gasification and melting furnace main body and melting the entrained fly ash. Is a control system for controlling the temperature of the pyrolysis gas introduced into the swirling melting furnace and controlling the combustion gas temperature of the swirling melting furnace. And 6
Reference numeral 0 denotes a boiler that recovers heat of the high-temperature gas discharged from the rotary melting furnace, 61 denotes a cooling tower for cooling exhaust gas to a temperature suitable for dust removal processing and harmful gas processing, and 62 denotes a dust collector such as a bag filter.

Reference numeral 12 is a waste charging device, 20 is a waste measuring device, 21 is a lime measuring device, and 22 is a coke measuring device. The weighed limestone, which is a regulator of the waste, coke, and slag components, is charged into the waste charging device 12, and is charged into the gasification and melting furnace main body 11 by this device.

The gasification and melting furnace main body 11 is configured to perform gasification of waste and melting treatment of the residue at the lower part, and the upper part whose diameter is expanded is a free board part. This free board portion has a very large volume, and its inner diameter is usually formed such that the rate of rise of the pyrolysis gas is about 1 m / sec. 13 is a gas outlet, and 14 is an outlet for molten slag. Reference numeral 70 denotes a coke layer deposited on the bottom of the furnace, and reference numeral 71 denotes a fluidized bed of waste.

The coke layer 7 under the gasification and melting furnace main body 11
A main tuyere 15 for blowing air or oxygen-enriched air is provided at a position where 0 is formed. By blowing air or oxygen-enriched air, a high-temperature combustion zone is formed, and waste residues are melted. It has become so. A sub tuyere 16 for blowing air for flowing the waste is provided at a position where the waste fluidized bed 71 is formed.

Further, a three-stage tuyere 17 for blowing air for partially burning the generated flammable pyrolysis gas is provided in the freeboard portion above the fluidized bed 71. A flow control device 18 is provided in the air pipe connected to the three-stage tuyere 17 so that the combustion amount of the pyrolysis gas can be changed by adjusting the flow rate of the blown air.

Numeral 19 denotes a flue connecting the gasification and melting furnace main body 11 and the swirling melting furnace 40. At the inlet of the swirling melting furnace, a temperature measuring device 23 for measuring the temperature in the flue is provided. . In addition, the flue 19 is formed such that the flow rate of the pyrolysis gas flowing through the inner diameter thereof is about 10 m / sec to 15 m / sec, and is 1 to the inner diameter of the free board portion of the gasification and melting furnace main body 11. / 10 to 1/15.

A plurality of nozzles 32 for blowing an oxygen-containing gas are arranged on the side of the swirling melting furnace 30 downstream of the gas inlet 31 with their outlets directed tangentially.
By blowing the gas from the nozzles 32 of the plurality of stages, the pyrolysis gas sent from the gasification and melting furnace main body is burned, and a swirling flow is formed in the furnace.
For this reason, the fly ash scattered together with the pyrolysis gas adheres to the inner wall and melts, flows down the wall, and is discharged from the waste part 40. In the figure, 41 is a slag receiving portion, 42 is a cooling pit, and 43 is a slag conveyor.

The nozzle 32 for blowing the oxygen-containing gas is connected to an oxygen-containing gas pipe 33. An air supply pipe 34 and an oxygen supply pipe 35 are connected to the oxygen-containing gas pipe 33 so that a mixed gas of air and oxygen is blown. Further, an air supply pipe 34 and an oxygen supply pipe 35
Are provided with an air flow control device 36 and an oxygen flow control device 37, respectively, so that the air blowing amount, the oxygen blowing amount, or both of the blowing amounts can be appropriately adjusted. In the figure, 38 is a temperature measuring device for measuring the temperature of the combustion gas in the swirling furnace, and 39 is an oxygen concentration measuring device for measuring the oxygen concentration in the combustion gas discharged from the swirling furnace.

In the apparatus having the above configuration, the temperature control of each part is performed as follows. The temperature of the pyrolysis gas flowing in the flue 19 connecting the gasification and melting furnace main body 11 and the swirling melting furnace 30 is measured by the temperature measuring device 23, and a signal of the measured value is sent to the control system 50. Next, an instruction signal for controlling the temperature in the stack 19 to a set value is sent from the control system 50 to the air flow control device 18 connected to the three-stage tuyere of the gasification and melting furnace main body, and the air is blown. The flow rate is adjusted. The temperature of the pyrolysis gas flowing through the flue 19 (measured value of the temperature measuring device 23) is usually 800 ° C. or more in consideration of the composition of the fly ash and the composition of the pyrolysis gas.
It is controlled so that it falls within a range of about 900 ° C.

In the operation of the swirling melting furnace 30, the control of the air ratio for burning the pyrolysis gas in an appropriate state;
Control of the combustion temperature is performed. Among them, the air ratio is calculated based on the oxygen concentration in the combustion gas, so that the control is performed based on the measured value of the oxygen concentration. The control of the air ratio and the control of the combustion temperature are performed as follows.

The temperature of the combustion gas in the swirling melting furnace 30 is measured by a temperature measuring device 38, and the oxygen concentration in the combustion gas is measured by an oxygen concentration measuring device 39. The signals of these measurements are sent to the control system 50. In the control system 50, first, a calculation is performed so that the air ratio obtained from the oxygen concentration measured by the oxygen concentration measuring device 39 becomes a predetermined value, and an instruction signal based on this is transmitted to the air flow adjusting device 36. The air and oxygen are sent to the oxygen flow rate measuring device 37, and the flow rates of air and oxygen are adjusted. The air ratio in the combustion of the swirling melting furnace 30 is usually 1.2 to 1.
4 is managed. The air ratio is a value uniquely determined from the oxygen concentration in the combustion gas,
For example, when the oxygen concentration is 6.1 vol%, the air ratio is 1.
4. When the oxygen concentration is 3.5 vol%, the air ratio is 1.2.

When the combustion gas temperature measured by the combustion gas temperature measuring device 38 is out of a predetermined range when the air ratio is controlled as described above, an instruction from the control system 50 is issued. A signal is sent to the oxygen flow measuring device 37 to adjust the oxygen blowing flow rate. In a swirling melting furnace, it is necessary to maintain the temperature in the furnace within a range where the fly ash can be stably melted. ,
The lower limit is about 1200 ° C and the upper limit is about 1400 ° C.

Since the calorific value of the pyrolysis gas introduced from the gasification / melting furnace main body 11 is very low, the flow rate of oxygen must be further increased. When the oxygen concentration in the gas exceeds a predetermined value, an instruction signal from the control system 50 is sent to a coke measuring device 22 that measures coke to be charged into the gasification and melting furnace main body 11, and the coke is charged. The input is increased. By this operation, the amount of combustible gas generated by gasification of coke increases, and the calorific value of the pyrolysis gas generated from the gasification and melting furnace main body 11 is increased. Note that the upper limit of the oxygen concentration in the oxygen-containing gas blown into the swirling melting furnace 30 is not a value determined technically. However, in the case of the present invention, the upper limit of the oxygen concentration is considered in consideration of the operating cost of the equipment. Is determined to be appropriate to be about 40 vol%.

[0038]

According to the present invention, since the swirling melting furnace is provided in connection with the high-temperature gasification and melting furnace for thermally decomposing the waste, the pyrolysis gas discharged from the high-temperature gasification and melting furnace is burned. At this time, the fly ash contained in the pyrolysis gas is melted, separated into a melt, and discharged. Therefore, the volume of fly ash can be reduced without complicated operation management,
And the heavy metal contained therein can be stabilized.

In the present invention, since the flow rate of the air supplied to the air blowing tuyere is adjusted so that the temperature in the flue at the entrance of the swirling melting furnace becomes a predetermined value, the smoke is reduced. The temperature of the pyrolysis gas flowing in the road can be prevented from rising to a temperature at which the fly ash partially melts and becomes sticky. For this reason, fly ash does not adhere to the inner wall of the flue, and blockage of the flue is prevented, and the operation of equipment that connects the high-temperature gasification melting furnace and the swirl melting furnace can be stably continued.

Also, in the present invention, oxygen can be supplied to the swirling melting furnace in addition to air, and the temperature in the swirling melting furnace can be set to a predetermined value by appropriately adjusting the flow rates of these two types of gases. Therefore, the temperature in the swirling melting furnace can be maintained at a temperature equal to or higher than the melting point of fly ash, and the operation of the swirling melting furnace is stably performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an example of a waste gasification and melting treatment facility according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 High temperature gasification and melting furnace 11 Gasification and melting furnace main body 12 Waste charging device 13 Gas outlet 14 Discharge outlet of molten slag 15 Main tuyere 16 Sub tuyere 17 Three-stage tuyere 18 Air flow controller 19 Smoke Road 20 Waste measuring device 21 Lime measuring device 22 Coke measuring device 30 Rotating melting furnace 31 Gas inlet 32 Oxygen-containing gas blowing nozzle 33 Oxygen-containing gas pipe 34 Air supply pipe 35 Oxygen supply pipe 36 Air flow control device 37 Oxygen flow control device 38 Temperature measuring device 39 Oxygen concentration measuring device 40 Waste part 50 Control system 70 Coke layer 71 Waste fluidized bed

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C10J 3/02 F23G 5/14 ZABF 3/20 5/50 ZABF F23G 5/14 ZAB ZABH 5/50 ZAB F23J 1/00 B B09B 3/00 ZAB F23J 1/00 303K (72) Takashi Noto 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Nao Nakamura Marunouchi, Chiyoda-ku, Tokyo 1-2-2 Nihon Kokan Co., Ltd. (72) Inventor Tsuneo Matsudaira 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. No. 1-2 Nihon Kokan Co., Ltd. F term (reference) 3K061 AA16 AB02 AB03 AC01 BA06 CA08 EA03 EB11 FA10 FA11 LA06 NB01 NB07 3K062 AA16 AB02 AB03 AC01 BA02 CA01 CB03 DA01 DA22 DB01 DB12 3K078 AA06 BA03 CA02 4D004 AA46 AB03 CA24 CA27 CA29 CB03 CC02 CC11 DA01 DA02 DA03 DA06 DA10 DA12

Claims (4)

[Claims] Claims 1. A waste and coke charging means,
A coke layer is formed on the bottom of the coke layer to burn coke, and a waste gas is charged and pyrolyzed on the coke layer. It has a plurality of nozzles that blow oxygen-containing gas on its side, and is configured such that a swirling flow is formed inside by blowing gas from the plurality of nozzles, and introduced from a high temperature gasification and melting furnace. A waste gasification and melting treatment facility, comprising: a swirling melting furnace configured to burn the pyrolysis gas and melt fly ash entrained by the pyrolysis gas. 2. A waste gasification and melting treatment facility according to claim 1, wherein an air blowing tuyere is provided at an upper part of the high temperature gasification and melting furnace for partially burning a pyrolysis gas generated in a lower part of the furnace. An air flow control device for supplying air to the air blowing tuyere, a temperature measuring device for measuring the temperature of the pyrolysis gas in the flue at the inlet of the swirling melting furnace, and an air blowing blade for adjusting the temperature to a predetermined value. And a control mechanism configured to adjust the flow rate of air supplied to the mouth. 3. The waste gasification and melting treatment facility according to claim 1, wherein an air supply pipe connected to an oxygen-containing gas pipe attached to an oxygen-containing gas injection nozzle provided on a side of the rotary melting furnace; An oxygen supply pipe, a flow control device provided in each of the air supply pipe and the oxygen supply pipe, a temperature measurement device for measuring the temperature of the combustion gas in the swirling melting furnace, and a combustion gas discharged from the swirling melting furnace. An oxygen concentration measuring device for measuring the oxygen concentration of the gas, and a control configured to adjust the air supply flow rate and / or the oxygen supply flow rate so that the temperature and the oxygen concentration of the combustion gas in the swirling melting furnace become predetermined values, respectively. A waste gasification and melting treatment facility comprising a mechanism. 4. The amount of coke charged into a high-temperature gasification and melting furnace according to claim 3, wherein the temperature of the combustion gas in the swirling and melting furnace becomes a predetermined value. A waste gasification and melting treatment facility, characterized by adding a control mechanism configured to adjust the temperature.