JPH08145324A - Heat recovering device from molten material in melting treatment facility for industrial waste and the like - Google Patents

Abstract

PURPOSE: To recover the heat of molten substances continuously and effectively in melting and solidifying the ash of incineration and the like. CONSTITUTION: A heat recovering device is constituted of a molten substances- pressurizing and supplying facility 10, a steam-generating facility 20, generating steam for cooling quickly the supplied molten materials from the molten materials-pressurizing and-supplying facility 10 to make slag and recover the retaining heat of the molten matters to generate steam, and a slag extracting facility 30, extracting slag produced in the steam generating facility 20. The device is provided with two sets of receiving tanks M-2A, M-2B, receiving the molten materials from a melting furnace M-1, a steam drum M-3, provided with molten material-supplying tubes 13A, 13B, 13, and to which the steam take-out tube 16 and a feed water tube 64A are connected, and a lock hopper M-4, connected to the lower part of the steam drum M-3 through a slag- extracting tube 15 equipped with an opening and closing valve V-30 to receive slag produced in the steam drum M-3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recovering heat from a melt in an industrial waste melting facility, and more specifically, incineration of incinerated ash or the like generated in the incineration of municipal waste, sewage sludge or the like. The present invention relates to a heat recovery device from a melt in a melting treatment facility for industrial waste or the like, which can continuously and effectively recover the heat of the melt during solidification in order to reduce the volume of the residue and render it harmless.

[0002]

BACKGROUND ART Industrial wastes such as municipal waste and sewage sludge are incinerated in an incinerator, etc., but the combustion ash which is the incineration residue is melted for volume reduction processing or detoxification processing. The need for solidification is increasing. Therefore, the incineration residue such as combustion ash is melted and processed in various melting furnaces such as an electric furnace, and the generated melt is cooled to be granulated slag or air-cooled slag. Granulated slag can be obtained by directly injecting water into the melt or by pouring it into water and quenching it. The air-cooled slag is obtained by allowing the melt to stand in the air and gradually cooling.

[0003]

[Problems to be Solved by the Invention] The molten material of the combustion ash in a state of being melted in a melting furnace such as an electric furnace has a high temperature (eg 1400
However, the latent heat and sensible heat of the slag are not effectively utilized in any of the above slag cooling methods, which is not preferable from the viewpoint of energy saving.

The present invention has been made in view of the above circumstances, and reduces the incineration residue such as incineration ash generated in the incineration of industrial waste such as municipal solid waste and sewage sludge, or renders it harmless. Therefore, an object of the present invention is to obtain a heat recovery device from a melt in a melting treatment facility for industrial waste or the like, which can continuously and effectively recover the heat of the melt during melting and solidification.

[0005]

In order to achieve the above object, a heat recovery device from a melt in a melting treatment facility for industrial waste according to the present invention comprises: (1) a melt processing device for industrial waste Which is a device for recovering the heat of the high-temperature melt generated in the above, wherein the melt is supplied from the melt pressure supply equipment, and the melt is rapidly cooled to form slag and melted. It is characterized by comprising steam generating equipment for recovering the heat of the material and generating steam and slag extracting equipment for extracting the slag generated by the steam generating equipment.

(2) A device for recovering the heat of the high-temperature melt generated in the melting apparatus for industrial wastes, the upper part of which is connected to the discharge port of the melting furnace to melt the melt from the melting furnace. Melt pressure supply equipment comprising at least two receiving tanks which can be alternately received, and a melt supply which is connected to a lower discharge port of the at least two receiving tanks and can alternately receive the melts from the receiving tanks A molten material supplied by the hot water stored therein, which has a pipe, is connected to each of the receiving tanks by a pressure equalizing pipe, is connected to a steam extraction pipe and a water supply pipe, and has a slag discharge port in the lower portion. Is rapidly cooled to generate slag and a steam drum for generating steam, and a slag generated by the steam drum connected by a lower slag discharge port of the steam drum and a slag extraction pipe equipped with an on-off valve. It is characterized in that a lock hopper formed by connecting the only placed slag discharge pipe having an opening and closing valve to the slag discharge port in the lower.

(3) Further, in the device of (2) above,
The supply end of the melt supply pipe of the steam drum is opened by being immersed in hot water, and the supply end of the water supply pipe of the steam drum is opened in tangential direction of the steam drum in hot water. It is characterized by that.

[0008]

In the configuration of (1) above, the high temperature of the incineration ash that is melted in the melting furnace such as an electric melting furnace (hereinafter, also referred to as an electric furnace) to form a slurry, for example, a melt at 1400 ° C.
In the hot water of the steam generating equipment such as the steam drum whose inside is maintained at a pressure of 35 Kg / cm ² G at 243 ° C, for example, by the pressurized supply equipment such as the receiving hopper that is pressurized to the same pressure as the steam generating equipment. Sent to. The high-temperature melt is rapidly cooled in this steam generation facility to form granulated slag with a particle size of several millimeters, and the heat (sensible heat and latent heat) of the high-temperature melt is, for example, a temperature of 243 ° C and a pressure of 35 Kg / cm ² Converted to G 2 steam (steam), the granulated slag is discharged from the slag extraction facility and collected. Thus, the molten material is slagged, and at the same time, the heat is effectively recovered as steam, and the molten slag can also be obtained as granulated slag that can be easily recycled.

In the above configuration (2), the melt such as incinerated ash melted in a melting furnace such as an electric furnace to form a high temperature slurry at a temperature of 1400 ° C. is at least a melt pressure supply facility. It is supplied alternately to two receiving tanks. From the at least two receiving tanks, the melt is alternately supplied to the steam drum through a melt supply pipe. At this time, the receiving tank and the steam drum are connected by a pressure equalizing tube, so that the receiving tank is pressurized to the same pressure as the steam drum, and the melt is smoothly supplied to the steam drum. The high-temperature melt supplied to the steam drum is poured into the hot water stored inside the steam drum, and the high-temperature retained heat is converted into steam, and the melt is rapidly cooled to a particle size of several millimeters. Is formed as granulated slag. The generated steam is taken out from the steam extraction pipe and supplied to a steam using facility, for example, a turbine of a generator for power generation. The water granulated slag generated in the steam drum is dropped from the slag discharge port at the lower part of the steam drum into the lock hopper by the slag extraction pipe through the open / close valve which is opened.

Therefore, the melt is continuously supplied to the steam drum by being alternately sent from at least two receiving tanks to the steam drum through the melt supply pipes, and the receiving tank is provided with the steam drum and the pressure equalizing pipe. The melted material is continuously and smoothly supplied from the receiving hopper to the steam drum, and the slag formation and steam generation are continuously carried out by the steam drum. Also, while such steam generating action and slag formation are being performed in the steam drum, the opening / closing valve of the slag extraction pipe that connects the steam drum and the lock hopper is opened,
The on-off valve of the slag discharge pipe connected to the lower discharge port of the lock hopper is closed, and the water granulated slag generated in the steam drum is stored in the lock hopper through the slag discharge pipe.

Therefore, the pressure of the steam drum is sealed by eliminating the pressure leakage due to the extraction of the slag from the steam drum by the action of the lock hopper, and the pressure inside the steam drum is maintained at a constant pressure or controlled to the same pressure.
The slag-forming action and the steam-generating action are smoothly and stably performed in the steam drum. When a certain amount of slag is accumulated in the lock hopper, the opening / closing valve of the slag extraction pipe is closed and the opening / closing valve of the slag discharge pipe is opened, so that the slag is taken out of the heat recovery device from the lock hopper. During this time, the steam drum continues to perform slag formation and steam generation, and the generated slag is temporarily stored at the bottom of the steam drum. In this way, the melt is continuously effectively recovered by its retained heat as steam, and at the same time, slag is formed. The slag can also be obtained as granulated slag that can be easily recycled.

In the configuration of the above (3), the supply end of the melt supply pipe is submerged and opened in the hot water of the steam drum,
Moreover, since the opening (end opening) of the supply end of the water supply pipe of the steam drum is opened in the tangential direction of the steam drum in hot water, a swirling flow is added to the hot water retained in the steam drum. The temperature distribution of hot water is made uniform,
The molten material charged into the hot water is generated in the granulated slag having a uniform particle size, and the steam having a constant pressure is smoothly generated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS All the figures show one embodiment of the heat recovery apparatus from the melt of the present invention, FIG. 1 is a flow chart showing the first embodiment of the present invention, and FIG. 2 is the first embodiment of the present invention. FIG. 3 is a vertical cross-sectional view that also serves as a flow chart showing the second embodiment, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, showing the attachment state of the melt supply pipe and the water supply pipe in the steam drum. .

In FIG. 1, a heat recovery apparatus 1 is composed of a melt pressure supply facility 10, a steam generation facility 20 and a water granulated slag extraction facility 30.
From 0 to the steam generation facility 20, where high-pressure steam is generated and granulated slag is generated, and the high-pressure steam is taken out and recovered as electric energy by the steam turbine generator. On the other hand, the water granulation slag is generated by the water granulation slag extraction equipment 30 and the steam generation equipment 20
Is extracted from. For example, a high-temperature melt at 1400 ° C., for example, in which the refuse incineration ash is melted into a slurry in a melting furnace such as an electric furnace is sent to the melt pressure supply facility 10.

The melt pressurizing and supplying facility 10 is composed of, for example, a receiving tank which is pressurized to a pressure equivalent to the steam generating pressure of the steam generating facility 20. As the steam generation facility 20, for example, hot water is retained inside,
The inside consists of a steam drum maintained at a temperature of 243 ° C and a pressure of 35 Kg / cm ² G. Also, granulated slag extraction equipment 30
The lock hopper is for extracting the water granulated slag generated by the steam drum while pressure-sealing it so as to keep the working pressure of the steam drum constant.
In the steam generation facility 20, the high temperature melt is put into hot water and rapidly cooled to form granulated slag having a particle diameter of several millimeters, and the heat of the high temperature melt (sensible heat and latent heat) is, for example, the temperature. It can be converted to steam at 243 ℃ and a pressure of 35Kg / cm ² G. The granulated slag is extracted and collected by the slag extraction equipment 30. Thus, the high-temperature melt is slagged, and at the same time, the heat retained therein is effectively recovered as steam, and the molten slag can also be obtained as granulated slag that can be easily recycled.

Next, a second embodiment of the heat recovery device of the present invention will be described with reference to FIG. The second embodiment is the first of FIG.
It is a device that embodies the embodiment. In this figure, the same parts as those in FIG. At the upstream position, a refuse incinerator ash melting furnace M-1 composed of an electric furnace or the like is located, where a high temperature slurry of 1400 ° C., for example, is generated. Downstream of the melting furnace M-1, a melt pressure supply device 10, a steam generating facility 20, and a granulated slag extracting facility 30 are sequentially provided as a heat recovery device 1 for the melt.

The melt pressure supply facility 10 is composed of two receiving tanks M-2A and M-2B. The tanks M-2A and M-2B are lined with refractory bricks. A melt transport main pipe 11 is attached to the melting furnace M-1, and tanks M-2A, M-
The melt transport branch pipes 11A and 11B branched from the melt transport main pipe 11 are connected to the upper portions of 2B, respectively. The melt transport branch pipes 11A, 11B are provided with open / close valves V-11A,
V-11B is inserted and installed. V-22A, V-22B
Are on-off valves installed in the depressurizing pipes of the tanks attached to the tanks M-2A and M-2B, respectively. Each tank M-2A, M-
Load cell mass meters 14A and 14B for measuring the amount of melt received are attached to 2B, respectively.

A steam drum M-3 serving as a steam generating facility 20 is located downstream of the receiving tanks M-2A and M-2B, and a melt discharge port under the receiving tanks M-2A and M-2B. Are respectively connected to melt supply pipes 13A and 13B, the supply pipes 13A and 13B are connected as one melt supply pipe 13 on the downstream side, and the one supply pipe 13 is connected to the steam drum M-3. It is installed by being inserted inside. The melt supply pipe 13A
, 13B are equipped with on-off valves V-23A and V-23B, respectively. Hot water is retained inside the steam drum M-3, and the supply end of the supply pipe 13 is submerged in the hot water and opened. Upper steam room M3S inside the steam drum M-3
Between the receiving tanks M-2A and M-2B and an upper space portion inside the receiving tanks M2A and M-2B via a pressure equalizing pipe 12 of a backbone, respectively.
, 12B are connected, and the on-off valve V-21A is connected to the pressure equalizing pipes 12A and 12B.
, V-21B is installed.

On the other hand, a hot water supply pipe 64A is connected to the steam drum M-3, and the hot water supply pipe 64A is connected to a circulating water tank 60 and a water supply backbone 64 with a high pressure pump 63 interposed.
It is provided by branching from. As shown in FIG. 3, the supply end opening of the hot water supply pipe 64A is opened in the tangential direction of the steam drum M-3 in a state of being immersed in hot water.
Further, an automatic level adjustment valve LCV is attached to the hot water supply pipe 64A, and the level of the hot water is detected by a level meter LC attached to the steam drum M-3 so that the hot water is supplied at a constant level. It is configured to be.

Furthermore, the steam chamber above the steam drum M-3
A steam outlet pipe 16 is connected to the M3S, and an automatic pressure control valve PCV is interposed in the steam outlet pipe 16. With this automatic pressure control valve PCV, the steam drum M-3
Pressure of, for example, is controlled to 35 Kg / cm ² G, for example, 35Kg / cm ² G, 243 ℃ high pressure steam is generated continuously. The end of the steam extraction pipe 16 is connected to the steam using facility 50, and is used as a drive source of the steam turbine 51 for driving a generator to recover electric energy, for example. The steam used in the steam-using facility 50 is cooled and condensed in the condenser 52, passed through the pipe 53 and returned to the circulating water tank 60. A supplementary water supply pipe 61 is attached to the circulating water tank 60.

An opening / closing valve is provided on the downstream side of the steam drum M-3.
A rock hopper M-4, which collects slag through the slag extraction pipe 15 to which the V-30 is attached, is provided as the granulated slag extraction equipment 30. The lock hopper M-4 is equipped with a slag discharge pipe 31 having an opening / closing valve V-40 at the lower discharge port, and a load cell type mass meter WI32 for measuring the amount of slag received in the hopper body. Is installed. A hot water supply pipe 64B branched from the water supply backbone 64 is connected to the lock hopper M-4. Hot water supply pipe 6
An on-off valve V-41 is attached to 4B. Lock hopper
An air introduction pipe 33 having an opening / closing valve V-33 is attached to M-4.

Further, the lower end of the slag discharge pipe 31 is exposed downstream of the lock hopper M-4,
A pit 41 for receiving the slag and hot water discharged from the M-4 is provided. Inside the pit 41, a conveyor 42 for slag transportation is installed, and further connected to the conveyor 42 to move the slag upward. A conveyor 43 for transportation is installed, and a granulated slag storage hopper 44 is installed at the transportation end thereof.

The on-off valves V-11A, V-11B, V-21
A, V-21B, V-22A, V-22B, V-23A, V-23B, V-30,
The V-33, V-40, and V-41 are composed of open / close valves that can be opened and closed by remote control.

Next, the operation of the heat recovery system 1 for the melt thus constructed will be described. The melting furnace M-1 consisting of an electric furnace, which is an incinerator ash melting facility for municipal solid waste, is operated under atmospheric pressure or a slight negative pressure or pressure, and the incinerated ash of municipal solid waste is continuously melted and the temperature is high at 1400 ° C. Is a melt in the form of a slurry. The melt is drawn out through the melt transport main pipe 11 and the melt transport branch pipes 11A and 11B and is alternately received in the receiving tanks M-2A and M-2B which are the melt pressure supply equipment 10. For example, the load cell mass meter WI (14A) detects when a certain amount of melt is received in the receiving tank M-2A,
On-off valve V-11A of transport branch pipe 11A is closed, pressure equalizing pipe 12A
The on-off valve V-21A is opened, and the internal pressure of the receiving tank M-2A is set to the same pressure as the steam drum M-3, for example, 35 Kg / cm ² G. Next, by opening the on-off valve V-23A of the melt supply pipe 13A, the melt in the receiving tank M-2A falls from the supply pipe 13 into the steam drum M-3 by its own weight.

When the discharge of the molten material from the receiving tank M-2A is completed, the opening / closing valve V-23A of the supply pipe 13A is closed and the opening / closing valve V-21A of the pressure equalizing pipe 12A is closed, and then the opening / closing of the depressurization pipe is performed. Receiving tank M-2A by opening valve V-22A
The interior is depressurized and ready to receive the next melt. The same operation as above is performed for one of the receiving tanks M-2B. In this way, the receiving tanks M-2A and M-2B are respectively
The depressurization, the acceptance of the melt, the pressurization, and the supply of the melt are repeated to operate so that the supply of the melt to the steam drum M-3 is not interrupted. By the way, by the end of the discharge of the molten material from the receiving tank M-2A as described above, the receiving of the molten material is completed in the other receiving tank M-2B. The melt feeding cycle from the receiving tanks M-2A and M-2B to the steam drum M-3 is shifted, that is, the melts are alternately discharged from both tanks and continuously melted to the steam drum M-3. To be input.

In the steam drum M-3, as shown in the figure,
A certain amount of hot water at 243 ℃ is always retained, and the upper space of the hot water is formed as a steam room M3S. High temperature into the hot water
When the melt of (1400 ℃) is charged, the high temperature retained heat is converted into steam, and the melt is rapidly cooled to form granulated slag with a particle size of several millimeters, for example 2-5 mm. It The formed slag descends and is temporarily stored in the discharge port at the bottom of the steam drum M-3. Steam drum
The pressure inside the M-3 is controlled by the automatic pressure control valve PCV to generate high-pressure steam of 35 Kg / cm ² G, for example. The high-pressure generated steam is taken out from the steam extraction pipe 16 and is used as the steam turbine 51 for the generator of the steam using facility 50.
And is used for power generation. From the hot water supply pipe 64A in the steam drum M-3 to supplement the steam generated.
Hot water of 30-70 ℃ is always added. That is, the level of the hot water in the steam drum M-3 is detected by the level meter LC, and the automatic level control valve LC is used so that the level is always constant.
V supplies the required amount of hot water. In this way, high-pressure steam (35 Kg / cm ² G, 243 ℃) is continuously generated on the steam drum M-3.

The supply end of the melt supply pipe 13 is opened by being immersed in the hot water of the steam drum M-3, and the supply end opening 64B of the hot water supply pipe 64A of the steam drum M-3 is hot water. Since the steam is opened in the tangential direction of the steam drum M-3, the swirling flow is added to the hot water retained in the steam drum M-3 and the hot water is agitated. The melted material charged into the hot water is formed into granulated slag having a uniform particle size, and steam having a constant pressure is smoothly generated.

The water granulated slag accumulated on the bottom of the steam drum M-3 passes through the slag extraction pipe 15 and is opened and closed.
It is dropped through the V-30 into the rock hopper M-4, which is the granulated slag extraction facility 30. The pressure inside the lock hopper M-4 is maintained at the same pressure as the steam drum M-3. When this happens
That is, the steam generation action and slag formation are caused by the steam drum M-
3), and while the slag is dropped into the lock hopper M-4, the opening / closing valve V-40 of the slag discharge pipe 31 and the hot water supply pipe 64B connected to the lower discharge port of the lock hopper are opened and closed. The valve V-41 and the opening / closing valve V-33 of the air introduction pipe 33 are closed. Therefore, the water granulated slag accumulated on the bottom of the steam drum M-3 can be taken out of the system without changing the pressure inside the steam drum M-3. When a certain amount of slag is stored in the lock hopper M-4, it is detected by the load cell mass meter WI32 and the opening / closing valve of the slag extraction pipe 15
While closing V-30, open the on-off valve V-40 of the slag discharge pipe 31, and take out the water granulated slag out of the system. During this time, the steam drum M-3 continues to generate slag and generate steam, and the generated slag is temporarily stored at the bottom of the steam drum M-3.

When the inside of the lock hopper M-4 is emptied,
After opening the open / close valve V-33 of the air introduction pipe 33 to open the inside of the hopper to the atmosphere, close the open / close valve V-40 of the slag discharge pipe 31 and open the open / close valve V-41 of the water supply pipe 64B to supply hot water. Lock hopper
Fully fill the inside of M-4 and close on-off valve V-41. After that, the opening / closing valve V-33 of the air introduction pipe 33 is closed and the opening / closing valve V-30 of the slag extraction pipe 15 is opened to start receiving the slag of the steam drum M-3. The granulated slag taken out from the lock hopper M-4 is discharged to the pit 41 together with the warm water, and the granulated slag hopper 44 is conveyed by the conveyors 42 and 43.
Shipped to and stored. The above operations are carried out step by step under computer control. In this way, the melt is continuously effectively recovered by its retained heat as steam, and at the same time, slag is formed. The slag can also be obtained as granulated slag that can be easily recycled.

1300 to 15 in the case of M-1 for incinerating refuse incineration ash
It is operated at 00 ℃. The sensible heat and latent heat of the 1400 ℃ melt differ depending on the ash composition, but generally sensible heat is 300 Kcal / Kg (0
℃ base), latent heat 50-100Kcal / Kg, total 350-400Kcal /
It is Kg. In the apparatus of this embodiment, the thermal energy of the melt can be recovered as high-quality energy. About 0.5 Kg of high-pressure steam per 1 Kg of waste that is melted and solidified can be recovered and converted into effective energy such as electricity to improve the total energy intensity.

Table 1 shows that high-pressure steam was obtained from the melt obtained in the melting furnace M-1 for refuse incineration ash having a melting capacity of 5 ton / h by using the heat recovery system for melt of this embodiment. FIG. 3 shows the material balance and heat balance of an experimental example when a steam turbine is driven by the high-pressure steam and power is generated by a generator 51.

[0032]

[Table 1]

As can be seen from Table 1, high pressure steam (35K
g / cm ² G, 243 ° C) can be obtained at 2.3 to 2.7 ton / h.
The high pressure steam causes the steam turbine 51.
Drive and recover as electric energy by the generator,
An output of 410 to 540 KW was obtained. This is an energy recovery of 0.08 to 0.11 KW per 1 kg of refuse incineration ash to be treated. In the case of an electric melting furnace, the energy consumption per 1 kg of refuse incineration ash is 0.7-1.0 Kwh, so the energy saving of 9-16% can be achieved by adopting this heat recovery device.

In the above embodiments, the case was explained in which the combustion ash of municipal solid waste was melted as industrial waste and this melt was handled. However, the present invention is applicable to melts such as sewage sludge and various other industrial wastes. Of course, it can be applied. Also,
The pressure and temperature of the obtained steam are not limited to those mentioned in this embodiment, and it is needless to say that the steam having different pressure and temperature can be obtained if necessary.

[0035]

As is apparent from the above description, according to the present invention, the following excellent effects can be obtained.

In the apparatus according to the first aspect, the molten material can be slagged and at the same time, the heat can be effectively recovered as steam, and the molten slag can also be obtained as granulated slag which can be easily recycled.

In the apparatus of claim 2, the melt can be continuously supplied to the steam drum by alternately sending the melt from at least two receiving hoppers to the steam drum through the melt supply pipe, and the receiving hopper can be used. Since it is connected to the steam drum by a pressure equalizing pipe, the molten material can be continuously and smoothly supplied from the receiving hopper to the steam drum, so it is possible to continuously perform slag formation and steam generation on the steam drum. it can. Also, while such steam generating action and slag formation are being performed in the steam drum, the pressure in the steam drum is sealed by eliminating the pressure leakage due to the discharge of slag from the steam drum by the action of the lock hopper, and the steam drum is sealed. The pressure inside the drum can be maintained at a constant pressure or controlled to the same pressure, so that the slagging action and the steam generating action can be smoothly and stably performed in the steam drum. Therefore, the retained heat of the melt can be effectively and continuously recovered as steam, and at the same time, it can be turned into slag, and the slag can also be obtained as granulated slag that can be easily recycled.

In the apparatus of claim 3, the supply end of the melt supply pipe is submerged and opened in the hot water of the steam drum, and the supply end of the water supply pipe of the steam drum is opened in hot water. By opening in the tangential direction of the steam drum, it is possible to impart a swirling flow to the hot water retained in the steam drum to make the temperature distribution of the hot water uniform, and the hot water was poured into the hot water. It is possible to generate a molten material in a water granulated slag having a uniform particle diameter and to smoothly generate steam at a constant pressure.

[Brief description of drawings]

FIG. 1 is a flowchart showing a first embodiment of a heat recovery system for melts of the present invention.

FIG. 2 is a longitudinal sectional view also showing a flow chart showing a second embodiment of the heat recovery system for melts of the present invention.

FIG. 3 is a plan view taken along the line AA of FIG. 2 and is a view showing a mounted state of a melt supply pipe and a water supply pipe in the steam drum.

[Explanation of symbols]

1 Heat Recovery Device 10 Melt Pressurizing Supply Facility M-1 Melting Furnace 11 Melt Transport Main Pipe 11A, 11B Melt Transport Branch Pipe M-2A, M-2B Melt Receiving Tank 12, 12A, 12B Pressure Equalizing Pipe 13A, 13B , 13 Melt supply pipe 20 Steam generation equipment M-3 Steam drum M3S Steam chamber 16 Steam extraction pipe 15 Slag extraction pipe 30 Granulation slag extraction equipment M-4 Lock hopper V-11A, V-11B, V-21A , V-21B, V-22A, V-22B, V-2
3A, V-23B, V-30, V-33, V-40, V-41 Open / close valve 40 Granulated slag storage facility 50 Steam use facility 51 Steam turbine 60 Circulating water tank 64A, 64B Hot water supply pipe

Claims (3)

[Claims] 1. A device for recovering heat of a high-temperature melt generated in an apparatus for melting industrial wastes, the melt pressurizing and supplying equipment, and the melt being supplied from the melt pressurizing and supplying equipment. Characterized in that it is composed of a steam generation facility for rapidly cooling the melt to slag and recovering the heat of the melt to generate steam, and a slag extraction facility for extracting the slag generated by the steam generation facility. A heat recovery device from the melt in the melting processing equipment for industrial waste. 2. A device for recovering the heat of a high-temperature melt generated in a melting treatment device for industrial waste and the like, the upper part of which is connected to a discharge port of the melting furnace to alternately receive the melt from the melting furnace. A melt pressurizing and supplying facility comprising at least two possible receiving tanks, and a melt supply pipe connected to the lower outlets of the at least two receiving tanks and capable of alternately receiving the melt from the receiving tanks. Then, each of the receiving tanks is connected with a pressure equalizing pipe, the vapor take-out pipe and the water supply pipe are connected, and the slag discharge port is provided in the lower part, and the melt supplied by the hot water stored inside is rapidly cooled. A steam drum that is slagged and generates steam, and a slag discharge pipe provided with a lower slag discharge port of the steam drum and an opening / closing valve are connected to receive the slag generated by the steam drum. And a lock hopper having a slag discharge pipe having an on-off valve connected to the slag discharge port, and a heat recovery device from a molten material in a melting treatment facility for industrial waste or the like. 3. The supply end of the melt supply pipe of the steam drum is opened by being immersed in hot water, and the supply end of the water supply pipe of the steam drum is directed in the tangential direction of the steam drum in hot water. The heat recovery device from the melt in the melt processing facility for industrial waste according to claim 2, wherein the heat recovery device is opened.