CN217441653U - Melting disposal unit and garbage fly ash treatment system - Google Patents

Abstract

The utility model provides a unit and rubbish flying dust processing system are dealt with in melting belongs to refuse treatment technical field, including electric melting furnace, exhaust-gas treatment pipe, back flow, backward flow fan and a plurality of spray gun, the electric melting furnace has furnace body and heating electrode, the furnace body be equipped with exhaust-gas discharge mouth and tap hole. The first end of the waste gas treatment pipe is connected and communicated with the waste gas discharge port, and the second end of the waste gas treatment pipe is used for being communicated with the waste gas treatment unit. The return line includes the person in charge and a plurality of branch pipes, is responsible for and handles the pipe intercommunication with waste gas. The return fan is arranged on the main pipe. The middle part of the spray gun is sealed and penetrates through the furnace body and is fixedly connected with the furnace body, and the spray gun is communicated with the corresponding branch pipe. The utility model provides a unit and rubbish flying dust processing system are dealt with in the melting, can solve fashioned globular thing and when carrying out the melting in the electric smelting furnace, the problem of remaining dioxin in the waste gas that the speed of melting is slower and produce in the melting process.

Description

Melting disposal unit and garbage flying ash treatment system

Technical Field

The utility model belongs to the technical field of refuse treatment, more specifically say, relate to a unit and rubbish flying dust processing system are dealt with in melting.

Background

In the incineration treatment of household garbage, a large amount of fly ash is generated. Since the waste fly ash contains high-toxicity dioxin, soluble heavy metals and soluble salts, the waste fly ash is a main carrier of secondary pollution generated by waste incineration, and the waste fly ash needs to be further treated. One of the treatment methods is a melting treatment, which generally comprises mixing fly ash, auxiliary materials and adhesives, then pressing the mixture into balls for forming, then putting the formed spherical materials into an electric melting furnace for melting treatment, filtering generated gas, and feeding molten glass formed in the melting process into a water quenching tank through a chute for water quenching treatment. When the molded spherical object is melted in a conventional electric melting furnace, the heat is not uniformly applied and the heat transfer effect between solid and liquid is poor, so that the melting speed is slow and the exhaust gas generated in the melting process may contain residual dioxin.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a unit and rubbish flying dust processing system are dealt with in the melting, when aiming at solving fashioned spheroid and carrying out the melting in the electric smelting furnace, the problem of remaining dioxin in the waste gas that the speed of melting is slower and produce in the melting process.

In a first aspect, an embodiment of the present invention provides a unit is dealt with in melting, including the electric melting furnace, the electric melting furnace has the furnace body and locates the heating electrode of furnace body bottom, the upper end of furnace body is equipped with exhaust gas discharge port, be equipped with the tap hole that is used for liquid exhaust on the furnace body, still include exhaust-gas treatment pipe, back flow, return fan and a plurality of spray gun. The first end of the waste gas treatment pipe is connected and communicated with the waste gas discharge port, and the second end of the waste gas treatment pipe is used for being communicated with the waste gas treatment unit. The return pipe comprises a main pipe and a plurality of branch pipes communicated with the main pipe, and the main pipe is communicated with the waste gas treatment pipe. The backflow fan is arranged on the main pipe. The plurality of spray guns correspond to the branch pipes one by one and are arranged around the circumferential direction of the furnace body, the middle parts of the spray guns penetrate through the furnace body in a sealing mode and are fixedly connected with the furnace body, the spray guns are communicated with the corresponding branch pipes, and gas sprayed out of the spray guns is used for blowing solid-liquid mixtures in the furnace body.

Compared with the prior art, the scheme that this application embodiment shows, during operation of return fan, with the person in charge of the intraductal some gas suction of exhaust-gas treatment in the back flow, then each branch pipe that flows into the back flow, spout the solid-liquid mixture in the furnace body and blow the furnace body through the spray gun at last, thereby realize stirring the solid-liquid mixture in the furnace body, can make the solid phase material among the solid-liquid mixture can the thermally equivalent like this, thereby the speed of solid phase material melting has been accelerated, when having solved fashioned globular thing and melting in the electric smelting furnace, the slow problem of speed of melting.

In addition, dioxin contained in gas entering the furnace body through the spray gun is decomposed through high-temperature treatment, so that the problem of residual dioxin in waste gas generated in the melting process is solved.

With reference to the first aspect, in one possible implementation, the melt handling unit further comprises a first gas-solid separator and a connecting pipe. The inlet of the first gas-solid separator is in communication with the second end of the flue gas treatment pipe. Two ends of the connecting pipe are respectively communicated with the gas outlet of the first gas-solid separator and the waste gas treatment unit, and the middle part of the connecting pipe is communicated with the main pipe.

With reference to the first aspect, in a possible implementation manner, the furnace body has a material return port, and the solid discharge port of the first gas-solid separator is located above the material return port and is communicated with the material return port, so that the material at the solid discharge port of the first gas-solid separator can enter the furnace body.

With the first aspect in mind, in one possible implementation manner, the tapping hole is provided with a chute for receiving liquid flowing out of the tapping hole, the chute is connected with the tapping hole in a sealing manner, the upper part of the chute is provided with an air outlet pipe, and the air outlet pipe is used for being communicated with the waste gas treatment unit.

With reference to the first aspect, in a possible implementation manner, the liquid discharge port is in an L-shaped structure and includes a vertical portion and a horizontal portion located at a top end of the vertical portion, and a bottom end of the vertical portion is communicated with the inside of the furnace body.

With reference to the first aspect, in one possible implementation manner, the plurality of spray guns can spray gas around the same annular direction, so that the solid-liquid mixture in the furnace body flows annularly.

With reference to the first aspect, in one possible implementation, the melt handling unit further includes a rotating shaft, a scraping assembly, and a driving assembly. The vertical setting of axis of rotation and middle part wear to locate in the roof of furnace body, the axis of rotation with the furnace body rotates and is connected. The strickle component is located in the furnace body and with the axis of rotation is located one end in the furnace body is connected, works as when the axis of rotation rotates, the strickle component is used for strickleing off the top of material in the furnace body. The driving assembly is arranged on the furnace body and connected with one end, located outside the furnace body, of the rotating shaft, and the driving assembly is used for driving the rotating shaft to rotate.

With reference to the first aspect, in a possible implementation manner, the melting treatment unit further includes a vibrating feeder and a screw conveyor which are sequentially connected, a discharge port of the screw conveyor is hermetically connected with a feed port at the top of the furnace body and used for conveying melting treatment raw materials into the furnace body, and a bin is arranged at an inlet of the vibrating feeder.

In a second aspect, the embodiment of the present invention further provides a garbage fly ash treatment system, which includes the above-mentioned melting disposal unit, and further includes a pretreatment unit. The pretreatment unit comprises a stirrer and a ball press which are arranged in sequence.

The embodiment of the present application is provided with the melting treatment means as described above, compared with the prior art, and thus can solve the problems of a low melting speed of the molded spherical object when the molded spherical object is melted in the electric melting furnace and dioxin remaining in exhaust gas generated during the melting process.

With reference to the second aspect, in a possible implementation manner, the garbage fly ash treatment system further includes a glass wool production unit, where the glass wool production unit includes a centrifuge, a cotton collector and a curing oven, which are connected in sequence, and an inlet of the centrifuge is connected to the liquid discharge port.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic flow diagram of a melt processing unit according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an electric melting furnace in a melting disposal unit according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rotating shaft, a leveling assembly and a driving assembly in a melting disposal unit according to an embodiment of the present invention after being connected;

fig. 4 is a schematic diagram of the relative angular relationship between the furnace body, the spray gun and the heating electrode in the melting disposal unit according to the embodiment of the present invention;

fig. 5 is a schematic flow chart of a garbage fly ash treatment system provided in embodiment 1 of the present invention;

fig. 6 is a schematic flow chart of a waste fly ash treatment system according to embodiment 2 of the present invention.

In the figure: 1. an electric melting furnace; 11. a furnace body; 12. an exhaust gas discharge port; 13. heating the electrode; 14. a tapping hole; 141. a vertical portion; 142. a horizontal portion; 15. a feed back port; 16. a slag tap; 17. a feed inlet; 2. an exhaust gas treatment pipe; 3. a return pipe; 31. a main pipe; 32. pipe distribution; 4. a return fan; 5. a spray gun; 6. a chute; 61. a water quenching pool; 62. an air outlet pipe; 7. a first gas-solid separator; 71. a connecting pipe; 8. a rotating shaft; 9. a strike-off assembly; 91. a rake body; 92. a scraping plate; 93. a pull rod; 110. a drive assembly; 121. a vibrating feeder; 1211. a storage bin; 122. a screw conveyor; 130. a glass wool production unit; 1301. a centrifuge; 1302. a cotton collecting machine; 1303. a curing oven; 140. an exhaust gas treatment unit; 1401. a first cooler; 1402. a second gas-solid separator; 1403. a bag-type dust collector; 1404. washing the tower with water; 1405. a UV photolysis device; 1406. an activated carbon box; 1407. a discharge fan; 1408. a second cooler; 150. a pre-processing unit; 1501. a blender; 1502. pressing a ball machine; 1503. a metering tank; 1504. a water storage tank; 1505. a metering pump.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2 and 4 together, the melting disposal unit of the present invention will now be described. Unit is dealt with in melting, including electric melting furnace 1, electric melting furnace 1 has furnace body 11 and locates the heating electrode 13 of 11 bottoms of furnace body, and the upper end of furnace body 11 is equipped with exhaust gas discharge port 12, is equipped with on the furnace body 11 to be used for liquid exhaust's tap hole 14, still includes exhaust-gas treatment pipe 2, back flow 3, return-flow fan 4 and a plurality of spray gun 5. The exhaust gas treatment pipe 2 has a first end connected to and communicating with the exhaust gas discharge port 12 and a second end for communicating with the exhaust gas treatment unit 140. The return pipe 3 includes a main pipe 31 and a plurality of branch pipes 32 communicating with the main pipe 31, and the main pipe 31 communicates with the flue gas treatment pipe 2. The return fan 4 is provided on the main pipe 31. The plurality of spray guns 5 correspond to the plurality of branch pipes 32 one by one and are arranged around the circumference of the furnace body 11, the middle parts of the spray guns 5 penetrate through the furnace body 11 in a sealing mode and are fixedly connected with the furnace body 11, the spray guns 5 are communicated with the corresponding branch pipes 32, and gas sprayed out of the spray guns 5 is used for blowing solid-liquid mixtures in the furnace body 11.

The utility model provides a unit is dealt with in melting, compared with the prior art, 4 during operations of return-flow fan, manage 31 being responsible for of some gas suction back flow 3 in the exhaust-gas treatment pipe 2, then each branch pipe 32 of inflow back flow 3, spout the solid-liquid mixture in the furnace body 11 and blow the furnace body 11 in through spray gun 5 at last, thereby realize stirring the solid-liquid mixture in the furnace body 11, can make the solid phase material in the solid-liquid mixture can thermally equivalent like this, thereby the speed of solid phase material melting has been accelerated, when having avoided fashioned globular thing to melt in electric melting furnace 1, the slower problem of molten speed.

In addition, dioxin which is not melted and decomposed in the gas introduced into the furnace body 11 through the lance 5 is further decomposed through high temperature treatment, thereby solving the problem of residual dioxin in exhaust gas generated in the melting process.

In the present embodiment, the second end of the exhaust gas treatment pipe 2 may be directly communicated with the exhaust gas treatment unit 140, or may be indirectly communicated with the exhaust gas treatment unit 140 through other devices. Similarly, the main pipe 31 may be directly connected to the exhaust gas treatment pipe 2, or may be indirectly connected to the exhaust gas treatment pipe 2 through other devices. The return pipe 3 is a multi-way pipe structure.

When the heating electrode 13 at the bottom of the furnace body 11 is heated, the spheres at the bottom in the furnace body 11 start to melt to form molten glass, and the molten glass contains part of the unmelted spheres, so that a solid-liquid mixing area at the bottom and a solid-phase area above the solid-liquid mixing area are formed in the furnace body 11, and as the molten glass in the solid-liquid mixing area continuously flows out from the liquid discharge port 14, the spheres in the upper solid-phase area also continuously downwards enter the solid-liquid mixing area. The spray gun 5 can be horizontally arranged, and one end of the spray gun 5 positioned in the furnace body 11 is positioned in the solid-liquid mixing area.

The velocity of the gas ejected from the lance 5 can be controlled to 20 to 40 m/s.

In this embodiment, the bottom of the electric melting furnace 1 may be provided with a slag tap 16 capable of being opened and closed, and a small portion of slag with high density is discharged from the slag tap 16, so as to ensure long-term stable operation of the equipment. The heating electrode 13 may be plural, and the plural heating electrodes 13 are arranged around the circumference of the furnace body 11. The heating electrode 13 may be made of molybdenum and inserted into the furnace body 11 along the horizontal direction.

In some embodiments, referring to fig. 1, the melt handling unit further comprises a first gas-solid separator 7 and a connecting pipe 71. The inlet of the first gas-solid separator 7 communicates with the second end of the off-gas treatment duct 2. The two ends of the connecting pipe 71 are respectively communicated with the gas outlet of the first gas-solid separator 7 and the waste gas treatment unit 140, that is, the waste gas treatment pipe 2 is communicated with the waste gas treatment unit 140, and the middle part of the connecting pipe 71 is communicated with the main pipe 31, that is, the main pipe 31 is communicated with the waste gas treatment pipe 2. Therefore, the solid materials in the gas discharged from the waste gas treatment pipe 2 can be separated, which is equivalent to primary filtration of the gas discharged from the waste gas treatment pipe 2.

In this embodiment, the first gas-solid separator 7 may be a cyclone separator.

In some embodiments, referring to fig. 1, the furnace body 11 has a feed back port 15, and the solid discharge port of the first gas-solid separator 7 is located above the feed back port 15 and is communicated with the feed back port 15, so that the material at the solid discharge port of the first gas-solid separator 7 can enter into the furnace body 11. Therefore, a part of large-particle solid substances in the exhaust gas discharged from the furnace body 11 can be conveyed back to the furnace body 11 for melting treatment, so that pollution is reduced as much as possible.

In this embodiment, the material at the solid outlet of the first gas-solid separator 7 can slide down into the furnace body 11 through a pipeline.

In some embodiments, referring to fig. 1 and 2, a chute 6 for receiving the liquid flowing out of the tap 14 is disposed at the tap 14, the chute 6 is connected to the tap 14 in a sealing manner, and an outlet pipe 62 is disposed at the upper portion of the chute 6, and the outlet pipe 62 is used for communicating with the waste gas treatment unit 140. When the glass state liquid flows into the chute 6, a small amount of gas in the furnace body 11 can escape from the liquid discharge port 14, and the gas can be collected and filtered through the structure so as to reduce pollution as much as possible.

Further, the chute 6 may be connected to a water quenching tank 61.

In some embodiments, referring to fig. 2, the tap hole 14 has an L-shaped structure, and includes a vertical portion 141 and a horizontal portion 142 at the top end of the vertical portion 141, and the bottom end of the vertical portion 141 communicates with the inside of the furnace body 11. Therefore, the glass liquid with a certain height is always arranged in the furnace body 11, so that the formed spherical objects are melted more thoroughly, and the liquid seal in the furnace body 11 can be realized.

In some embodiments, referring to fig. 4, in order to better make the solid-liquid mixture in the furnace body 11 flow, a plurality of spray guns 5 can spray gas around the same annular direction, and the axial line of the annular direction is vertically arranged, so that the solid-liquid mixture in the furnace body 11 flows in an annular shape.

In this embodiment, the annular direction may be a regular polygon, and the spray gun 5 may be horizontally disposed with a depth of 300-600 mm in the furnace body 11. The spray guns 5 may be arranged in multiple layers in the vertical direction and a plurality of spray guns 5 may be provided for each layer. The direction of the gas sprayed by the spray gun 5 forms an included angle with a connecting line between the axial lead of the furnace body 11 and the position of the spray gun 5, and the included angle beta is 20-30 degrees.

In some embodiments, referring to fig. 2 and 3, the melt handling unit further comprises a rotating shaft 8, a screed assembly 9, and a drive assembly 110. The vertical setting of axis of rotation 8 and middle part are worn to locate in the roof of furnace body 11, and axis of rotation 8 rotates with furnace body 11 and is connected. The strickle component 9 is positioned in the furnace body 11 and is connected with one end of the rotating shaft 8 positioned in the furnace body 11, and when the rotating shaft 8 rotates, the strickle component 9 is used for strickleing off the top end of the material in the furnace body 11. The driving component 110 is arranged on the furnace body 11 and connected with one end of the rotating shaft 8 outside the furnace body 11, and the driving component 110 is used for driving the rotating shaft 8 to rotate. When the material in the furnace body 11 reaches a certain height, the driving component 110 drives the leveling component 9 to rotate, so as to level the material in the furnace body 11, and thus, the ball-shaped objects in the furnace body 11 can be heated as uniformly as possible.

In some embodiments, referring to fig. 3, in order to perform the function of the screed 9, the screed 9 comprises two screed units. Two strickle the unit symmetry and locate the both sides of axis of rotation 8, strickle the unit and include the rectangular shape harrow body 91 that the level set up and be located a plurality of flitch 92 of scraping of harrow body 91 below, harrow body 91 along axis of rotation 8 radially set up and with axis of rotation 8 fixed connection, a plurality of flitch 92 of scraping set up along the length direction interval of harrow body 91, scrape the vertical setting of flitch 92 and with harrow body 91 fixed connection.

In the present embodiment, the rotating shaft 8 and each elongated rake body 91 can be connected by a pull rod 93.

In some embodiments, referring to fig. 1, the melting treatment unit further includes a vibrating feeder 121 and a screw conveyor 122 connected in sequence, a discharge port of the screw conveyor 122 is communicated with a feed port at the top of the furnace body 11 for conveying the melting treatment raw material into the furnace body, and a bin 1211 is disposed at an inlet of the vibrating feeder 121. The formed spherical objects are put into the storage bin 1211, conveyed to the screw conveyer 122 by the vibrating feeder 121 and then conveyed into the furnace body 11 by the screw conveyer 122, so that the formed spherical objects can uniformly enter the furnace body 11.

In addition, the vibrating feeder 121 and the screw conveyor 122 are hermetically connected, and the top end of the silo 1211 can be opened and closed, so that the sealed feeding into the furnace body 11 can be realized.

In this embodiment, a plurality of level meters may be disposed in the furnace body 11, and when the material in the furnace body 11 is lower than a certain height, the formed spherical material is conveyed into the furnace body 11; when the material in the furnace body 11 reaches a certain height, the formed spherical objects are stopped being conveyed into the furnace body 11.

Based on the same inventive concept, the embodiment of the application also provides a garbage fly ash treatment system, which comprises the melting disposal unit and a pretreatment unit. The pretreatment unit comprises a blender 1501 and a ball press 1502 which are arranged in sequence. The problems of a low melting speed and dioxin remaining in exhaust gas generated during the melting process when the molded spherical object is melted in the electric melting furnace 1 can be avoided.

The fly ash, the auxiliary materials, the adhesive and the like are uniformly stirred by the stirrer 1501, and the uniformly stirred materials are pressed into a spherical shape by the ball press 1502. The ball press machine 1502 may be a double-roll ball press machine 1502. The material may be weighed separately through each metering tank 1503 before being blended to achieve a proportioned batch. The diameter of the spherical particles is 20 to 30 mm. Water in a water storage tank 1504 for providing a water source is input into the blender 1501 by a metering pump 1505.

The garbage fly ash can be transported in two modes, namely vehicle-mounted bulk fly ash and bagged fly ash. The vehicle-mounted bulk fly ash can be directly conveyed to the fly ash bin in a pneumatic sealing manner. Bagged fly ash is conveyed to a bag-breaking rotary screen by a belt conveyor, the bagged fly ash is broken by the bag-breaking rotary screen, the broken fly ash is broken up by a screw machine and a double-shaft breaker, the broken-up fly ash is pneumatically and hermetically conveyed to a fly ash storage by a screw conveying pump and a pipeline, and waste ash bags are collected and stored in a waste bag box. The dust-containing waste gas generated by the bag-breaking drum screen and the screw conveying pump during working is collected by a negative pressure collecting device and is discharged after reaching the standard through the dust remover purification treatment.

In some embodiments, referring to fig. 5, the waste fly ash treatment system further comprises an exhaust gas treatment unit 140. The exhaust gas treatment unit 140 includes a first cooler 1401, a second gas-solid separator 1402, a bag-type dust collector 1403, a water washing tower 1404, a UV photolysis device 1405, an activated carbon tank 1406, and a discharge fan 1407 connected in sequence, and an inlet of the first cooler 1401 is communicated with the connection pipe 71. The gas in the connection pipe 71 is cooled by the first cooler 1401, then is subjected to multiple purification treatment by the second gas-solid separator 1402, the bag-type dust collector 1403, the water washing tower 1404, the UV photolysis device 1405 and the activated carbon tank 1406, and finally is discharged by the discharge fan 1407.

In this embodiment, two first coolers 1401 may be provided, two first coolers 1401 are connected in parallel, and the connection pipe 71 may automatically switch communication between the two first coolers 1401. The second gas-solid separator 1402 may be a cyclone or the like. Outlet pipe 62 may also communicate with a second gas-solid separator 1402 via a second cooler 1408 to clean the gas within chute 6.

In some embodiments, referring to fig. 6, the waste fly ash treatment system further comprises a glass wool production unit 130, wherein the glass wool production unit 130 comprises a centrifuge 1301, a cotton collector 1302 and a curing oven 1303 which are connected in sequence, and an inlet of the centrifuge 1301 is connected with the liquid outlet 14. The glass liquid flows into a centrifuge 1301 to form cotton fibers, the cotton fibers are formed through a cotton collector 1302, and the formed cotton fibers are solidified into products with different thicknesses through a curing oven 1303.

In this embodiment, a feeding channel and a weeping plate may be disposed between the tapping hole 14 and the inlet of the centrifuge 1301, the liquid flowing out of the tapping hole 14 flows into the feeding channel and flows from the feeding channel onto the weeping plate, a plurality of weeping holes are disposed on the weeping plate above the centrifuge 1301, and the glass liquid on the weeping plate falls into the inlet of the centrifuge 1301 through the plurality of weeping holes, so that the amount of the glass liquid falling into the centrifuge 1301 is relatively stable; furthermore, a heating assembly can be arranged in the feeding channel, so that the glass liquid flowing out of the feeding channel is kept at a preset temperature. The feeding channel can adopt the structures of a chute 6 and the like; the middle part of the weep plate may be recessed downward.

In this embodiment, the centrifuge 1301 is provided with a centrifuge therein, and the centrifuge rotates at a high speed under the action of high-temperature and high-speed airflow, wherein the general rotation speed is 2100-; and forming glass liquid flow by the glass liquid through a liquid leakage plate, further forming micro trickle under the action of centrifugal force, and cooling to form the micron-grade cotton fiber.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Unit is dealt with in melting, including the electric melting furnace, the electric melting furnace has the furnace body and locates the heating electrode of furnace body bottom, the upper end of furnace body is equipped with exhaust emission mouth, be equipped with on the furnace body and be used for liquid exhaust tap hole, its characterized in that still includes:

the first end of the waste gas treatment pipe is connected and communicated with the waste gas discharge port, and the second end of the waste gas treatment pipe is used for being communicated with a waste gas treatment unit;

the return pipe comprises a main pipe and a plurality of branch pipes communicated with the main pipe, and the main pipe is communicated with the waste gas treatment pipe; and

the backflow fan is arranged on the main pipe;

the spray guns are in one-to-one correspondence with the branch pipes and are arranged around the circumferential direction of the furnace body, the middle parts of the spray guns penetrate through the furnace body in a sealing mode and are fixedly connected with the furnace body, the spray guns are communicated with the corresponding branch pipes, and gas sprayed out of the spray guns is used for blowing solid-liquid mixtures in the furnace body.

2. The melt handling unit of claim 1, further comprising:

a first gas-solid separator having an inlet in communication with the second end of the flue gas treatment pipe;

and two ends of the connecting pipe are respectively communicated with the gas outlet of the first gas-solid separator and the waste gas treatment unit, and the middle part of the connecting pipe is communicated with the main pipe.

3. The melt handling unit of claim 2, wherein the furnace body has a feed back port, the solids outlet of the first gas-solid separator being positioned above and in communication with the feed back port to enable material at the solids outlet of the first gas-solid separator to enter the furnace body.

4. The molten handling unit of claim 1, wherein the tapping port is provided with a chute for receiving liquid flowing out of the tapping port, the chute is hermetically connected with the tapping port, and an air outlet pipe is arranged at the upper part of the chute and is used for communicating with the waste gas treatment unit.

5. The melt handling unit of claim 4, wherein the tap hole is an L-shaped structure including a vertical portion and a horizontal portion at a top end of the vertical portion, a bottom end of the vertical portion communicating with the furnace body.

6. A molten handling unit as defined in claim 1, wherein a plurality of said lances are capable of injecting gas around the same annular direction to cause annular flow of the solid-liquid mixture within the vessel.

7. The melt handling unit of claim 1, further comprising:

the rotating shaft is vertically arranged, the middle part of the rotating shaft penetrates through the top wall of the furnace body, and the rotating shaft is rotatably connected with the furnace body;

the strickling component is positioned in the furnace body and connected with one end, positioned in the furnace body, of the rotating shaft, and is used for strickling the top end of materials in the furnace body when the rotating shaft rotates;

the driving assembly is arranged on the furnace body and connected with one end, located outside the furnace body, of the rotating shaft, and the driving assembly is used for driving the rotating shaft to rotate.

8. The melting treatment unit of claim 1, further comprising a vibrating feeder and a screw conveyor which are connected in sequence, wherein a discharge port of the screw conveyor is hermetically connected with a feed port at the top of the furnace body and is used for conveying the melting treatment raw material into the furnace body, and a bin is arranged at an inlet of the vibrating feeder.

9. Waste fly ash treatment system, comprising the melt disposal unit according to any one of claims 1 to 8, further comprising:

and the pretreatment unit comprises a stirrer and a ball press which are arranged in sequence.

10. The waste fly ash treatment system of claim 9, further comprising a glass wool production unit comprising a centrifuge, a cotton collector and a curing oven connected in sequence, wherein an inlet of the centrifuge is connected to the tap hole.

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