JP4012980B2 - Mobile melting furnace for incineration ash volume reduction - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an incineration ash melting furnace for further reducing the volume of incinerated ash by incineration of combustible materials including waste, and in particular, incineration ash in different locations of generation or storage. This is related to a mobile melting furnace that enables high-temperature heat treatment that reduces the volume of ash at the circuit destination and does not produce dioxin substances generated at that time.
[0002]
[Prior art]
There is a disclosure example of reducing the volume by compression, pulverization, combustion, or the like as a technique for carrying on-board equipment capable of processing waste on a chassis and performing a processing operation while visiting or collecting waste. Here, in the waste treatment, it is necessary to clear the problem of suppressing the secondary environmental pollutants.
Dioxin generated during heat treatment is a mixture having a toxic potential 1000 times that of potassium cyanide, and is generated by incineration of PCDD and PCDF isomers combined with chlorine gas, and is extremely stable at 600 ° C. or lower. In particular, dioxins are formed on the ash surface using copper chloride as a catalyst at 300 ° C. or lower, while 99% or higher is said to decompose at 800 ° C. or higher. This dioxin is burnt and detoxified by a melting and solidification method in which incineration ash is treated by high-temperature heat treatment at about 1300 ° C or higher, a reducing atmosphere incineration method, a method for dehalogenating aluminum and iron at 300 ° C or lower, 900 A specific drug injection method in which a specific drug is reacted in an atmosphere of 300 ° C. or lower or 300 to 400 ° C. is disclosed.
[0003]
Furthermore, fly ash suppression or ash dust collection is required as a treatment associated with incineration ash handling, and ash collection technology using watering ash, an electric dust collector, or a bag filter is applied. Alternatively, incineration ash may be humidified or sludged to suppress fly ash.
A conventional technique applicable to the sludge technology will be described with reference to FIG. Here, the incinerated ash a is read as the pollutant a, the incinerated ash sludge d is read as the concentrated sludge d, and the incinerated ash pretreatment equipment 19 is read as the pretreatment equipment 19.
The pollutant a is introduced into the agglomeration reaction tank 9 and reacted with the dissolved water b1 mixed with the aggregating agent c to be changed into agglomerated sludge. The flocculant c is an organic or high molecular weight (for example, polyacrylamide) agent that has a large floc floc and a fast sedimentation rate, an aluminum agent such as aluminum sulfate, and an iron based agent such as polyferric sulfate. In addition, there are inorganic chemicals that point to lime, which is an iron-based auxiliary. The flocculant c in which the pollutant a is dissolved in the dissolved water is added, and the mixture is stirred and reacted by a mixer. The slurry produced by the reaction is transferred to the coagulated ash precipitation tank 9a and retained for a predetermined time. Then, the precipitated and separated agglomerated sludge is taken out as concentrated sludge d. This concentrated sludge is reduced to a cake by a dehydrator in the next step. The process equipment until the concentrated sludge is taken out is referred to as pretreatment equipment 19 and is commonly used for waste water treatment / water turbidity treatment, water sludge concentration, and the like.
[0004]
Furthermore, as conventional technology for incineration ash volume reduction, slag technology, particularly ash melting technology that performs high-temperature treatment without generating dioxins of harmful substances generated during heat treatment is disclosed (Japanese Patent Laid-Open No. 2002-181322). . This disclosed example shows a technique in which molten incineration ash does not damage the hearth.
In this technique, as shown in FIG. 5B, high-temperature heat treatment is performed by an incineration ash melting facility (hereinafter referred to as ash melting facility) 1. In order to prolong the life of the hearth, incineration ash a, which is a mixture of about 20% by weight of thermite reactant containing 5% or less of aluminum and iron oxide, is melted by sludge from the incineration ash hopper with a pusher. The fuel oil k is injected by the heating burner 16 on the tiltable hearth 15 made of castable refractory, which is pumped to the furnace 5 and formed at an inclination of 30 degrees or less, and the incinerated ash is directly heated to melt and liquefy the slag. It cools, solidifies, and is discharged by the slag discharge conveyor 7a.
Further, the exhaust gas g from the sludge melting furnace is cooled by the exhaust gas treatment facility 20, dehumidified and discharged to the outside. That is, in the exhaust cooling tower 22 that is cooled by the gas cooling water b3 through the exhaust gas flue 14, the exhaust gas temperature is rapidly cooled, the cooling water in the exhaust gas g is removed, and the accompanying carried dust is internally installed. The exhaust gas is discharged from the chimney 17 through the exhaust blower 8a through the exhaust dehumidifier 23 that removes dust with a filter.
[0005]
By the way, there is no prior art in which the incinerated ash is processed by the melt-solidification method in the public technology that performs the waste processing by the on-vehicle equipment. The reason why there is no public technology is that when it is put together in an on-vehicle facility, it is impossible to construct a scale with a melt-solidification method that handles high temperatures that can detoxify dioxins within the weight limit. Even if it can be constructed, the melt generated by the melt-solidification method When discharging the slag, there was a technical problem to be overcome, such as the melting gate of the melting furnace became low temperature, the slag solidified, and the discharge port was easily closed. Although there is a disclosure of the slag conversion technology that allows the slag to be taken out at a high temperature, a pre-treatment device for mixing a thermite agent with a moisture content of 5% or less into the incinerated ash is provided to construct a heavy castable refractory hearth on the chassis. For example, the scale and weight are too large to be integrated in an on-vehicle facility, and cannot be constructed on the chassis of a mobile melting furnace.
[0006]
Waste incineration facilities are performed at low temperatures in many places, and in order to replace the facilities with high-temperature treatment facilities, wastes are collected for a predetermined period. On the other hand, neglecting dioxin generation facilities that lead to environmental pollution and shortening the life of landfill sites are becoming social problems. The budget for replacement of facilities is expensive, and no incineration facilities have been constructed. In general, public institutions are not designed to bring incineration waste into the incineration facilities in neighboring administrative districts for interchange during the rebuilding period. There is no safety net for so-called ultimate waste volume reduction, which will become ashed, and it will become increasingly difficult for the private sector to secure a place for the waste treatment industry, and the social conditions that will increase illegal dumping will increase. There is a tendency. In particular, there is no infrastructure for social development, such as the addition of the ultimate volume reduction treatment facility that incinerates waste and the detoxification incineration plant.
[0007]
[Problems to be solved by the invention]
The present invention has been developed in view of the above-mentioned problems, and performs pretreatment of incineration ash that is dried without producing fly ash, and uses the combined effects of the substances that remain during the pretreatment. This makes it easy to melt ash, contributes to detoxification of dioxin, and realizes weight reduction that enables high-temperature heat treatment, and forms a melting furnace that does not cause solidification clogging when molten slag is discharged outside the furnace. To provide a mobile melting furnace that can solve the incineration ash melting process at the patrol destination that requires incineration ash treatment even when combined with equipment capable of ash melting and exhaust gas treatment on the chassis It is intended.
[0008]
[Means for Solving the Problems]
The mobile melting furnace for incinerated ash according to the present invention supplies incinerated ash agglomerated sludge obtained by agglomerating and reacting the incinerated ash of waste with an inorganic scavenger containing an aluminum-based or iron-based metal component. A mobile melting furnace for reducing the volume of incinerated ash that is pyrolyzed and converted into granulated slag ,
The primary hopper for receiving incinerated ash agglomerated sludge is dried by a drying furnace that dries at 300 ° C or lower, a secondary hopper for intermediate storage, and a heated heater that attaches the dried sludge to the ceramic tube and its outer periphery. An incinerated ash comprising a sludge melting furnace for high-temperature treatment at 1450 ° C. or less and a slag granulating tank for water-cooling the generated incinerated ash slag , together with an exhaust gas treatment facility for receiving exhaust gas discharged from the drying furnace The volume reduction equipment is assembled and mounted on the chassis, and the ceramic tube is placed in a slanted shape with the dry sludge inlet at the top and the melting incineration ash slag outlet at the bottom, and the dry sludge moves downward. The indirect heating operation is performed so that the melting temperature in the ceramic tube is increased .
[0009]
Furthermore, the mobile melting furnace for reducing the volume of incinerated ash according to the present invention has a ceramic tube interior divided into a plurality of sections along its axial direction, and each section of a heating heater provided on the outer periphery of the tube. Are configured so that the temperature rise control operation can be performed individually. The mobile melting furnace for reducing the volume of incinerated ash is hereinafter simply referred to as a mobile melting furnace for incinerated ash.
[0010]
The incinerated ash mobile melting furnace of the present invention configured as described above reacts with an inorganic flocculant including components that can be dehalogenated, aluminum and iron by incineration ash pretreatment performed by the incineration ash supplier. Because the incinerated ash sludge obtained by melting is the target of melting treatment, the fly ash phenomenon does not occur during handling. In the drying furnace, a large amount of water vapor is generated from the incinerated ash sludge, and oxygen in the exhaust gas is diluted by the high-temperature gas rising from the sludge melting furnace. Has a high latent heat, and the inside thereof is in an oxygen-poor air, that is, an atmosphere close to reducibility due to a relatively high temperature, and maintains the condition that dioxin proceeds to a detoxification reaction even at a low temperature. The incinerated ash sludge conveyed to the sludge melting furnace exhibits an easy melting tendency because the inner aluminum component or iron component becomes a core material, and there is no need to add a thermite reactant before the melting treatment. The core material component advances the dehalogenation method before transporting the sludge melting furnace in a low temperature state, and the detoxification reaction of dioxin acts in combination with the atmospheric effect similar to the reducing property. Incineration ash melting in the sludge melting furnace can operate the lower end of the ceramic tube to the maximum melting temperature, so that the slag flow does not solidify. And since the sludge melting hearth was formed of high-temperature heat-resistant ceramic tubes, the sludge melting furnace was significantly reduced in weight.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The incinerated ash mobile melting furnace according to the present invention will be described below with reference to the drawings. FIG. 1 illustrates a mobile melting furnace for incineration ash according to the present invention, (A) is a block diagram showing the overall configuration, and (B) is a partial side view including a side cross section showing the main part configuration, 2A and 2B illustrate an embodiment of the present invention, in which FIG. 2A is a plan view thereof, FIG. 2B is a side view thereof, and FIG. 3 is an embodiment of a sludge discharging apparatus similarly attached to a mobile melting furnace. The side view to explain and (A) of Drawing 5 are mimetic diagrams showing the processing procedure of incineration ash pretreatment equipment to which a prior art is applied.
In the incinerated ash mobile melting furnace of the present invention, as shown in FIG. 1 (A), the ash melting facility 1 and the exhaust gas treatment facility 20 are mounted on a chassis 11, or the incinerated ash sludge shown in FIG. The sludge discharging device 2 to be installed in the patrol place is added.
As shown in FIG. 5 (A), the incinerated ash agglomerated sludge d here means that the incinerated ash a in a dry state is agglomerated together with the inorganic flocculant c and the dissolved water b1 at the circulation destination, that is, where the incinerated ash is generated. It is a precipitated sludge obtained by mixing and reacting in the reaction tank 9 and allowing the aggregated floc extracted from the reaction tank to settle in the aggregated ash precipitation tank 9a, or the same coagulant dissolved in dissolved water It refers to the incineration ash obtained by spraying or spraying the agent solution (b1 + c) on the incineration ash a to convert the incineration ash a in a dry state into a lump, granule, slurry, etc. to “moistened incineration ash”.
The ash melting facility 1 shown in FIG. 1 (A) is a dryer for transporting and drying the primary hopper 2b that receives the incinerated ash sludge d and the incinerated ash sludge d stored in the primary hopper by a drying furnace transport conveyor not described here. A furnace 3, a secondary hopper 3 a for temporarily storing incinerated ash sludge dried in the drying furnace, and an incinerated ash sludge d dried from the secondary hopper by a sludge melting furnace conveyor (hereinafter referred to as a sludge conveyor) 4 a A sludge melting furnace (hereinafter referred to as a melting furnace) 5 to be conveyed, an incinerated ash slag f discharged from the melting furnace with water cooling and granulating, and a granulated slag f from the slag granulating tank. Add slag discharge conveyor (not described here) to be transported outside, install ash melting on-vehicle equipment, and install exhaust gas treatment equipment 20 to guide exhaust gas through gas flue connected to the top of drying furnace 3 , In-vehicle The Bei 10, configured by assembling on the chassis 11.
[0012]
As shown in FIG. 3, the sludge discharging device 2 is configured such that the entire side surface of a prism that internally includes a bucket conveyor 2 a is formed in an inverted L shape in an internal space, and is configured to stand upright. The in-vehicle equipment 10 is installed so that it can be moved, and the incineration ash sludge inlet 24 and the outlet 25 are arranged at both ends of the prism, and the sludge discharging operation is interlocked when the in-vehicle equipment is operated, The in-vehicle equipment 10 in which the incinerated ash sludge d received from the receiving port 24 provided at the lower part of the upright prismatic column is lifted and conveyed by the conveyor, discharged from the outlet 25 opened at the tip of the horizontal column, and stopped and opened at the lower part thereof. The temporary hopper 2b is configured to be transported to the drying furnace transport conveyor 4.
[0013]
As shown in FIG. 1 (B), the melting furnace 5 has a ceramic tube in which a sludge transport conveyor 4a for receiving sludge from the secondary hopper 3a is inserted, and a heater 6b is attached to the discharge end of the sludge transport conveyor. 6 is disposed so as to be inclined so that the downstream side is positioned downward, and the lower end opening of the ceramic tube is fixed so that the melt falls directly to the slag granulating tank 7. The ceramic tube 6 has high-temperature heat resistance and structural strength that can sufficiently withstand the melting of sludge to be treated inside the tube, and the heater has the highest melting point in the downstream side of the final melting step including the tube lower end opening. The temperature raising operation can be performed at the temperature. In addition, although not shown here, the heater 6a shown in FIG. 1 (B) is provided with a heating unit on both sides and a ceiling surface on the lower side of the ceramic tube 6 or a lower heating body more densely than the upper one. Heating the inside of the tube by forming it, or by dividing the heater attached to the tube in the length direction and controlling the amount of power so that the heating capacity increases from the top to the bottom with different heating capabilities. Configure the state to be controllable. Here, 3 is a drying furnace, 6a is a drying heater attached to the drying furnace, 7a is a slag discharge conveyor, and 12 is a slag collection tank temporarily placed outside the vehicle.
[0014]
【Example】
An embodiment of the mobile melting furnace for incineration ash according to the present invention will be described with reference to the drawings.
As shown in FIG. 2, the mobile melting furnace 30 disposed on the chassis 11 has a primary hopper 2b installed at a position aligned with the bucket conveyor 2a of the sludge discharging apparatus 2 provided outside, and the drying furnace is conveyed below the primary hopper 2b. A conveyor 4 is installed so as to penetrate the drying furnace 3 so that it can be conveyed upward. The drying furnace is provided with a drying heater 6a that is positioned at the lower part of the drying furnace transport conveyor 4 and is maintained at a drying set temperature. The incinerated ash sludge d is transported to the secondary hopper 3a while being transported through the drying furnace 3, and is sequentially melted from the sludge transport conveyor 4a disposed under the secondary hopper. It is conveyed into the ceramic tube 6 in the furnace 5. A heater 6b that is attached to the ceramic tube and applies resistance heating raises the incinerated ash sludge d inside the tube to a set melting temperature to form a molten slag, and a slag in which water is directly applied from the lower opening end of the ceramic tube 6 It is allowed to fall naturally into the granulating tank 7. The water-cooled molten slag f is carried out and collected by the slag discharge conveyor 7a to the slag collection tank 12 installed outside the vehicle. Here, the incinerated ash sludge d is held in a solid state in the sludge transport conveyor 4a and carried out to the ceramic tube 6, and the heater 6b for melting performs a heating operation until the ash melt is received in the ceramic tube. . Here, 13 is an operation panel that also serves as a power distribution panel and a control panel. The drying furnace 3 and the melting furnace 5 are appropriately provided with a pressure release valve as a measure for abnormally increasing the internal pressure, so that the pressure in the furnace is kept below the set value. It is trying to become.
[0015]
The hot air generated in the melting furnace 5 passes through a pipe (not shown) directly and together with the exhaust gas g generated in the melting tube tube, through the sludge conveyer 4a, the secondary hopper 3a, the drying furnace 3, and the gas flue 14. Then, it is guided to the exhaust gas treatment device 21 formed by combining conventional means. Here, in order to reduce the temperature to about 55 ° C or less by forced water cooling after the harmful substances generated during the drying and melting processes are heat-treated by heat treatment to be harmless and non-bromide, the cooling water shower and built-in limestone In addition, an exhaust cooling tower 22 is provided in which exhaust gas is brought into contact with and reacted with a lime water shower, and then transferred to an adjacent exhaust dehumidifier 23 to dehumidify the contained moisture from the exhaust gas. Finally, the exhaust gas cooled and dehumidified is discharged to the outside air by the exhaust fan 8. It should be noted that a gravity damper type open valve is appropriately installed in the exhaust gas discharge pipe and the steam generation location to take measures against accidental safety, and the cooling water supplied to the exhaust gas treatment device 21 is communicated with the slag granulating tank 7. Since it is circulated and reused, the required amount of makeup water is suppressed.
[0016]
The mobile melting furnace for incinerated ash according to the present invention configured as described above performs the processing operation from receiving the incinerated ash sludge to collecting the molten slag f as follows. FIG. 4 is a flowchart showing the processing procedure of the incinerated ash mobile melting furnace according to the present invention. First, it is assumed that the preliminary preparation including the ash pretreatment equipment 19 and the sludge discharging device 2 is completed, continuous supply of incinerated ash sludge is possible, and it is in a state where it can be interlocked with the present invention device.
When the control system power is turned on (S1), the temperature system and level system sensors can be sensed in sequence, the measuring instrument, each conveyor, and the timer that determines the timing of the heating operation are activated, and the water supply system piped to each water tank Various sensors placed in the drainage system or in the exhaust gas treatment facility 20 or the exhaust gas system can be sensed, and then the operation system power supply is turned on (S2), and the solenoid valve disposed in each piping system, each furnace or exhaust system Each heater, each conveyor, and the exhaust fan to be arranged can be activated at the timing.
The incinerated ash sludge d is introduced into the sludge discharging device 2 and conveyed by the bucket conveyor 2a that receives the sludge (S3), and the incinerated ash sludge d is received by the primary hopper 2b (S4). When the storage amount of the hopper reaches the payout level M1 or more, the drying furnace transport conveyor 4 is turned on (S5), and the sludge transport conveyor 4a is sequentially turned on (S6). The incinerated ash sludge d is transported to the drying furnace 3 (S7) and dried during the transport. The dried incinerated ash sludge d is conveyed and stored in the secondary hopper 3a (S8). Next, the stored sludge of the secondary hopper is transported to the melting furnace 5 by the sludge transport conveyor 4a (S9). The incinerated ash sludge d melted in the melting furnace turns into molten slag f, flows down in the ceramic tube 6 and is fed into the slag granulating tank 7 (S10), and is solidified and granulated in the slag granulating tank. The slag is carried out by the slag discharge conveyor 7a and discharged outside the vehicle (S11). If the incomplete melt f ′ is discharged due to insufficient heating during the start-up operation of the melting furnace 5 and remelting is required, the process is returned to the appropriate steps of S3, S4 and S8 described above. It is processed. Here, the harmful components contained in the exhaust gas are heated to about 900 ° C. with a heater provided in the exhaust gas treatment device 21 in order to make them harmless or not bromide. The drying furnace 3 is heated to 250 ° C to 350 ° C, and the melting furnace is heated to 1100 ° C to 1450 ° C.
[0017]
Next, an embodiment in which the incinerated ash mobile melting furnace 30 of the present invention is operated will be described. The incinerated ash sludge d having a water content of 60% and a treatment amount of 45 kg-dry / h was dried and melted. The drying furnace 3 has a length of 1.5 m, a drying heater 6a, a silicon carbide resistance heater 31.4 kw (heating operation temperature 400 ° C.), a drying conveyor transport conveyor 4 operated at a screw conveyor feed speed of 3 to 10 rpm, and the material The resistance heater 21 kw (heating operation temperature 1450 ° C.) of the above-described resistance heater 8 kw (heating operation temperature 900 ° C.) is provided in the melting furnace 5 provided with the 150 φ ceramic tube 6 to which the heater 6 b is attached. The heater 10 for non-bromide treatment is provided, and the on-vehicle equipment 10 according to the present invention is mounted on the chassis of a 4-ton long body vehicle. In this example, the incineration ash became molten slag reduced by 50-60% on a dry weight basis.
The exhaust gas from the exhaust gas treatment facility could be released at a temperature of 45 ° C. The exhaust gas emission component is 0.0013 ng-TEQ / Nm ³ (standard 0.1) of dioxins below the environmental standard value, the other emission material values are carbon monoxide 1.0 volppm (standard 10. or less), dust concentration 0 Less than .01 g / Nm ³ (reference 0.10 or less), sulfur oxide less than 0.1 Nm ³ / h (reference 0.1 or less), nitrogen oxide 0.7 volppm (reference 0.04 or less), hydrogen chloride 4. 3 mg / Nm ³ (environmental standard non-display substance) was shown. Here, the numerical value in parentheses () indicates the environmental standard value in the unit indicated for each target substance, and omits the unit redisplay.
[0018]
【The invention's effect】
According to the mobile melting furnace for incineration ash of the present invention, in addition to the agglomeration treatment that has not been conventionally performed in the incineration ash pretreatment at the destination that requires the incineration ash volume reduction treatment, It is changed to incinerated ash coagulated sludge mixed with flocculant, and the sludge is melted by indirect heating and lightened with an exhaust gas treatment facility. Since it is a technology, the mixed flocculant effectively makes molten slag from the incinerated ash, and effectively combines with the clean treatment of exhaust gas. Therefore, the device of the present invention makes it possible to easily go to the incineration ash sludge supplier and reduce the volume by dioxin detoxification and slag. Incineration ash was made into slag, and it was made possible to reclaim the treated molten ash. Moreover, since the incineration ash sludge is collected for the incineration ash melting pretreatment at the patrol destination incineration facility, the fly ash problem does not occur in the facility. Furthermore, it contributes to the construction of a safety net for the reduction of incineration ash and the ultimate volume reduction of waste, and because it can handle waste in a wide area and flexibly, it contributes to the creation of a comfortable social environment base, etc. The technical and social effects of the present invention are great.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 illustrates an incinerated ash mobile melting furnace according to the present invention, in which (A) is a block diagram showing the entire configuration thereof, and (B) is a partial side view including a side cross section showing an essential configuration thereof. It is.
FIGS. 2A and 2B are diagrams for explaining an embodiment of a mobile melting furnace for incineration ash according to the present invention, in which FIG. 2A is a plan view and FIG. 2B is a side view thereof.
FIG. 3 is a side view for explaining an embodiment of a sludge discharging apparatus attached to the incinerated ash mobile melting furnace.
FIG. 4 is a flowchart showing the processing procedure of the incinerated ash mobile melting furnace according to the present invention.
5A and 5B are diagrams for explaining a conventional technique and its application technique, in which FIG. 5A is a schematic diagram showing a processing procedure of an incineration ash pretreatment facility to which the conventional technique is applied, and FIG. It is a schematic diagram which shows a processing facility.
[Explanation of symbols]
1 (incineration) ash melting equipment 2 sludge discharging device 2a bucket conveyor 2b primary hopper 3 drying furnace 3a secondary hopper 4 drying furnace conveyor 4a sludge (melting furnace) conveyor 5 sludge melting furnace (melting furnace)
6 Ceramic tube 6a Heater (for drying)
6b Heater (for melting)
7 Slag granulating tank 7a Slag discharge conveyor 8 Exhaust fan 9 (Aggregation) Reaction tank 9a (Aggregated ash) Sedimentation tank 10 On-board equipment 11 (Movement) Chassis 12 Slag recovery tank 13 Control panel (distribution / operation)
14 Gas flue 15 Furnace 16 Heating burner 17 Chimney 19 (Incineration) Ash pretreatment equipment 20 Exhaust gas treatment equipment 21 Exhaust gas treatment equipment 22 Exhaust cooling tower 23 Exhaust dehumidifier 24 Receptor (incineration ash sludge)
25 Payment outlet (same as above)
30 Mobile melting furnace a Incineration ash b1 (incineration ash) Dissolved water b2, b3 Cooling water c Flocculant d Incineration ash (aggregation) sludge f, f 'Slag g Exhaust gas h Drain k Fuel (oil)

Claims (2)

Incineration ash volume reduction of incinerated ash, which is converted into incinerated ash agglomerated sludge (d) by reacting with inorganic flocculant (c), and then converted into granulated slag by receiving heat treatment equipment assembled on the chassis A mobile melting furnace for
A primary hopper (2b ) for receiving the incinerated ash agglomerated sludge (a) , a drying furnace (3) for drying the agglomerated sludge at about 300 ° C. or less, and a secondary hopper for temporarily storing the obtained dried sludge (d) ( 3a) , a sludge melting furnace (5) for melting the dried sludge (d) at about 1450 ° C. or less, and a slag granulating tank (7) for cooling the incinerated ash slag (f) generated by the melting process. The incinerated ash volume reduction facility (1), which is sequentially arranged and additionally provided with an exhaust gas treatment facility (20) for receiving the exhaust gas (g) discharged from the drying furnace (3), is configured on the chassis (11), and sludge The melting furnace (5) has a heating part composed of a ceramic tube (6) having high temperature resistance and a heating heater (6b) attached to the outer periphery thereof, and a dry sludge (d) inlet on the upper part thereof. The incinerated ash slag (f) is placed and melted inside It is installed so as to be inclined so as to be discharged from the lower part, and the melting temperature in the ceramic tube (6) is increased as the dry sludge (d) being melted in the heating part moves downward. A mobile melting furnace for reducing the volume of incinerated ash characterized by performing a heating operation that enables indirect heating . The internal space structure of the ceramic tube (6) constituting the heating section of the sludge melting furnace (5) is divided into a plurality of sections divided along the tube axis direction. The mobile melting furnace for incinerated ash according to claim 1, wherein the heating heater (6b) attached to the outer periphery of the tube is configured to be capable of controlling the temperature rise individually .

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