CN212108425U - Material stirring oxygen-enriched melting device - Google Patents

Abstract

The utility model relates to the field of hazardous waste gas treatment, in particular to a material stirring type oxygen-enriched melting device. The device includes: an oxygen-enriched combustion device, including several oxygen-enriched combustion lances, to generate flames in the body device of the melting furnace; the body device of the melting furnace, including the body of the melting furnace, to melt the material inside; the feeding and fluidized bed The heating device uses the heat generated by the melting furnace body device during the melting process to heat up and dry the materials to be transported; among them, several oxygen-enriched combustion lances are evenly arranged around the melting furnace body, and the generated flames are evenly distributed in the melting furnace body. Inside, a tangential rotation is formed in the melting furnace body to stir the material at the bottom of the melting furnace body. The utility model reduces the energy consumption in the melting process, promotes the stirring of the molten material, enhances the heat transfer and reduces the melting time, realizes the recycling of the secondary fly ash while realizing the resource utilization of the fly ash melting, and reduces the pollution generated in the melting process.

Description

Material stirring oxygen-enriched melting device

technical field

The utility model relates to the field of hazardous waste gas treatment, in particular to a material stirring type oxygen-enriched melting device.

Background technique

As waste incineration has gradually become the mainstream technical means in the field of domestic waste treatment, the generated waste incineration fly ash is increasing, and the fly ash concentrates heavy metal elements such as lead (Pb), cadmium (Cd), mercury (Hg) and chlorine Toxic and harmful substances such as salt and dioxin are hazardous wastes stipulated in the national environmental protection regulations. Fly ash is in powder form and is prone to secondary dust. If not properly disposed of, it will seriously threaten human health.

At present, the stabilization and harmless treatment methods of fly ash include solidification/stabilization method, heat treatment method and extraction/separation method. Among them, the melting method is an important means of the heat treatment method.

After melting treatment as high as 1300-1500℃, organic pollutants such as dioxins in fly ash are destroyed by thermal decomposition, heavy metal salts with lower boiling points are gasified in a small part, and most of them are transferred into glass slag , greatly reducing the possibility of leaching. After the residue is melted, the density is greatly increased, the volume reduction can reach more than 1/2, and the metal in it can be recovered, and the stable vitreous slag has the potential for resource utilization and can be used as roadbed materials and building materials.

Fly ash melting devices include fuel-type melting furnaces, electric melting furnaces and plasma melting furnaces. Electric melting furnaces and plasma melting furnaces need to consume a lot of electric energy, and are only suitable for power plants with convenient power supply conditions.

The fuel-type melting furnace has wider applicability and large-scale potential. The use of oxygen-enriched combustion and melting can increase the flame temperature, strengthen the combustion process, and promote the melting process. The heat loss carried away by the gas is a potential harmless treatment method for fly ash.

At present, the fuel melting furnace has the following problems:

1) The loose and porous nature of fly ash results in poor thermal conductivity and difficult heat transfer, which prolongs the time required for melting;

2) Since the fly ash carries a large amount of water during the collection and stacking process, it will consume extra energy and reduce the utilization efficiency of energy if it directly enters the furnace to evaporate the molten water;

3) During the melting process, a large amount of secondary fly ash rich in chloride salts and volatile heavy metals will be produced, causing secondary pollution.

Utility model content

The purpose of the utility model is to provide a material stirring type oxygen-enriched melting device, which solves the problems that the prior art melting device needs large energy consumption, low energy utilization rate and easy to cause secondary pollution.

In order to achieve the above purpose, the utility model provides a material stirring oxygen-enriched melting device, including an oxygen-enriched combustion device, a melting furnace body device and a feeding and fluidized bed heating device:

The oxygen-enriched combustion device includes several oxygen-enriched combustion lances, which are connected to the melting furnace body device and generate flames in the melting furnace body device;

The melting furnace body device, including the melting furnace body, is connected with the oxygen-enriched combustion device, the feed material and the fluidized bed heating device, and the material in the furnace is melted;

The feeding and fluidized bed heating device transports the material required for melting for the melting furnace body device, and uses the heat generated by the melting furnace body device during the melting process to heat up and dry the material;

Among them, the several oxygen-enriched combustion lances are evenly arranged around the melting furnace body, and the generated flames are evenly distributed in the melting furnace body, forming a tangential rotation in the melting furnace body, stirring the material at the bottom of the melting furnace body.

In one embodiment, the oxygen-enriched combustion lance is at an angle of 15-30° downward with the horizontal direction, and is arranged obliquely downward;

The oxygen-enriched combustion lance and the melting furnace body radially form an included angle of 10-30°.

In one embodiment, the oxygen-enriched combustion device further includes a fuel storage tank and an oxygen storage tank:

The fuel storage tank is connected to the oxygen-enriched combustion spray gun through a pipeline, and a valve and a flow meter are installed on the pipeline to provide fuel for the oxygen-enriched combustion spray gun;

The oxygen storage tank is connected to the oxygen-enriched combustion spray gun through a pipeline, and a valve and a flow meter are installed on the pipeline to provide oxygen for the oxygen-enriched combustion spray gun to support combustion.

In one embodiment, the melting furnace body device further includes a refractory insulation layer, a cooling pool and a plurality of sockets for oxygen-enriched combustion guns:

The cooling pool is connected to the overflow port provided at the lower part of the melting furnace body device, and the liquid produced by the melting of the melting furnace body flows into the cooling pool along the overflow port for cooling to form a stable glassy slag;

The refractory insulation layer is arranged on the outer side of the melting furnace body to reduce the heat dissipation of the melting furnace body;

The oxygen-enriched combustion gun sockets are arranged at equal intervals at the bottom of the melting furnace body, and the number and arrangement are matched with the oxygen-enriched combustion spray guns. The flame, stirs the material to make a vortex rotating motion.

In one embodiment, the refractory thermal insulation layers are corundum bricks, high alumina refractory bricks, high temperature resistant castables and aluminum silicate refractory fiber thermal insulation materials in sequence from the inside to the outside.

In one embodiment, the feeding and fluidized bed heating device includes a feeding hopper, a dryer feeder, a fluidized bed heater and an air distribution plate:

The feeding hopper is connected with the dryer feeder to provide the material inlet;

The dryer feeder is connected to the fluidized bed heater, and transports the material to the fluidized bed heater after drying;

The air distribution plate is arranged at the bottom of the fluidized bed heater to support materials and distribute air evenly;

The fluidized bed heater is connected to the air outlet provided on the upper part of the melting furnace body device, and the high-temperature flue gas generated by the melting furnace body device is sent to the fluidized bed heater, and the material is heated and dried through the air distribution plate.

In one embodiment, an ash discharge channel is provided at the bottom of the feedstock and the fluidized bed heating device, which is connected to the melting furnace body device, and the material is fed into the melting furnace body through the ash discharge channel for melting.

In one embodiment, the material stirring oxygen-enriched melting device further includes a dust removal device, which is connected to the feed material and the fluidized bed heating device to capture and purify the fugitive dust in the melting process and drying process, and remove the collected material. It is sent into the melting furnace body device to continue melting.

In one embodiment, the dust removal device includes a ceramic filter, an ash storage tank and a furnace melt feeder:

The inlet of the ceramic filter is connected to the top outlet of the fluidized bed heater, and the bottom is connected to the ash storage tank through the ash discharge channel, to capture and purify the dust and flue gas generated in the melting process and drying process, and the collected The material is sent to the ash storage tank;

The ash storage tank is connected to the feeder of the melting furnace, and stores the materials captured by the ceramic filter and transports them to the feeder of the melting furnace;

The melting furnace feeder is connected to the melting furnace body device, and sends the material conveyed by the ash storage tank into the melting furnace body for melting treatment.

In one embodiment, the top of the ceramic filter is provided with a flue gas outlet to discharge the purified flue gas.

The utility model proposes a material stirring type oxygen-enriched melting device, which reduces the energy consumption in the melting process, promotes the stirring of the molten material, enhances heat transfer and reduces the melting time, and realizes the utilization of the fly ash melting as a resource, and also realizes the secondary fly ash. cycle to reduce pollution from the melting process.

The material stirring oxygen-enriched melting device proposed by the utility model has the following beneficial effects:

1) Using oxygen-enriched means to increase the melting temperature, strengthen the melting process and reduce heat loss;

2) The arrangement of the oxygen-enriched combustion lances is adjusted to enhance the heat transfer during the melting process;

3) Set up feeding and fluidized bed heating device to reduce material moisture and improve energy utilization efficiency;

4) The installation of a ceramic filter effectively solves the problem of secondary fly ash pollution during the fly ash melting process.

Description of drawings

The above-mentioned and other features, properties and advantages of the present invention will become more apparent from the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals refer to like features throughout, wherein:

Fig. 1 discloses a schematic diagram of a material stirring oxygen-enriched melting device according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of the position of the socket of the oxygen-enriched combustion lance according to an embodiment of the present invention.

The meanings of the reference numerals in the figure are as follows:

1 Oxygen-enriched combustion device;

11 Natural gas storage tanks;

12 Oxygen storage tanks;

13 Oxygen-enriched combustion spray gun;

2 melting furnace body device;

21 melting furnace body;

22 Refractory insulation layer;

23 cooling pool;

24 The first oxygen-enriched combustion gun socket;

25 The socket of the second oxygen-enriched combustion gun;

26 The socket of the third oxygen-enriched combustion gun;

27 The fourth oxygen-enriched combustion gun socket;

28 fifth oxygen-enriched combustion gun socket;

3 Feed and fluidized bed heating device;

31 feed hopper;

32 dryer feeder;

33 Fluidized bed heater;

34 air distribution board;

4 Dust removal device;

41 ceramic filter;

42 Ash storage tanks;

43 Furnace feeder.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

The utility model can effectively realize the harmless and stable treatment of waste incineration fly ash, and at the same time of resource utilization, the discharge of pollutants in the melting process can be reduced.

FIG. 1 shows a schematic diagram of a material stirring oxygen-enriched melting device according to an embodiment of the present invention. In the embodiment shown in FIG. 1 , in the embodiment shown in FIG. The material melted by the oxygen melting device is fly ash. The material stirring oxygen-enriched melting device of fly ash circulation proposed in this embodiment includes an oxygen-enriched combustion device 1, a melting furnace body device 2, and a feeding and fluidized bed heating device. 3 and dust removal device 4.

The oxygen-enriched combustion device 1 is connected to the melting furnace body device 2 to provide the melting furnace body device 2 with a flame required for melting fly ash.

The main body device 2 of the melting furnace is connected with the oxygen-enriched combustion device 1, the feedstock and the fluidized bed heating device 3, and the fly ash inside it is melted;

The feeding material is connected with the fluidized bed heating device 3, and the melting furnace body device 2 and the dust removal device 4, to transport the fly ash to the melting furnace body device 2, and use the heat generated by the melting furnace body device 2 in the melting process to carry out the fly ash. heating and drying;

The dust removal device 4 is connected with the feed and the fluidized bed heating device 3 to capture and purify the dust and flue gas in the melting process and drying process, and send the captured fly ash into the melting furnace body device 2 to continue melting.

Each part of the material stirring oxygen-enriched melting device proposed by the present invention will be described in detail below with reference to FIG. 1 .

Oxygen-enriched combustion device 1, including fuel storage tank, oxygen storage tank 12 and several oxygen-enriched combustion spray guns 13

The fuel storage tank is connected with the oxygen-enriched combustion spray gun 13 to provide fuel for the oxygen-enriched combustion spray gun 13 .

In the embodiment shown in FIG. 1 , the fuel storage tank is a natural gas storage tank 11 , and the corresponding oxygen-enriched combustion spray gun 13 uses natural gas as the fuel. The natural gas storage tank 11 is connected to the oxygen-enriched combustion spray gun 13 through a pipeline, and provides the oxygen-enriched combustion spray gun 13 with natural gas as a fuel.

In other embodiments, the fuel storage tank may also store other combustible gases as the fuel for the oxy-fuel combustion lance 13 .

In the embodiment shown in FIG. 1 , the oxygen storage tank 12 is connected to the oxygen-enriched combustion spray gun 13 through a pipeline, and provides oxygen-enriched oxygen to the oxygen-enriched combustion spray gun 13 as an oxidant to support combustion.

As a preferred embodiment, the oxygen concentration in the oxygen storage tank 12 can be up to 93%.

Valves and flowmeters are respectively installed on the two pipelines connecting the natural gas storage tank 11 and the oxygen storage tank 12 to the oxygen-enriched combustion spray gun 13 to control the flow of natural gas and oxygen entering the oxygen-enriched combustion spray gun 13, thereby changing the oxygen-enriched combustion flame Length, improve material agitation, change the melting temperature.

Preferably, the melting temperature is usually set at about 1300-1500°C. In this temperature range, the melting of the fly ash can be achieved, and at the same time, organic components such as dioxins in the fly ash can be effectively destroyed.

In this embodiment, oxygen-enriched gas is used instead of traditional air as the oxidant to realize the combustion of the fuel, and the generated high-temperature flue gas promotes the melting of the solid incineration residue, so as to increase the flame temperature, strengthen the combustion process, promote the progress of the melting process, and effectively reduce the The purpose of reducing the amount of flue gas and reducing the heat loss in the melting process has achieved energy saving and consumption reduction, and reduced the emission of pollutants.

The oxygen-enriched combustion lances 13 are evenly distributed around the bottom of the melting furnace body 21 , and the generated flames are evenly distributed in the melting furnace body, forming a tangential rotation in the melting furnace body, stirring the material at the bottom of the melting furnace body 21 .

In the embodiment shown in FIG. 1 , the oxygen-enriched combustion lances 13 are uniformly arranged along the cylindrical melting furnace body 21 , and the interval between the lances increases as the diameter of the melting furnace body 21 increases.

In the embodiment shown in FIG. 1 , the number of oxygen-enriched combustion lances 13 is 5. Taking the melting furnace body 21 with a diameter of 2300mm as an example, the arc length interval of the 5 lances is 2300×3.14/5=1444mm.

In the embodiment shown in FIG. 1 , the oxygen-enriched combustion lance 13 is at an angle of 15-30° downward with the horizontal direction, and is arranged obliquely downward, and the oxygen-enriched combustion lance 13 and the melting furnace body 21 are radially at an angle of 10 to 30° The included angle is ensured to ensure that the flame of the oxy-fuel combustion lance forms a tangential rotation in the furnace of the melting furnace body 21 , and stirs the fly ash located at the bottom of the melting furnace body 21 .

In the present embodiment, a plurality of oxygen-enriched combustion spray guns 13 are used, and the angle of the spray guns is adjusted, so that the high-temperature flame generated by the oxygen-enriched combustion spray guns 13 is rotated and burned, and the material is directly stirred to achieve the purpose of promoting heat transfer and accelerating the melting process.

The melting furnace body device 2 includes a melting furnace body 21 , a refractory insulation layer 22 , a cooling pool 23 and several sockets for oxygen-enriched combustion guns.

The melting furnace main body 21 fuses the fly ash inside thereof to decompose the dioxin contained in the fly ash.

The melting furnace body 21 has an overflow port at the lower part, and the liquid produced by melting flows into the cooling pool 23 along the overflow port for cooling to form a stable glassy slag. The product can be used as roadbed or building material to realize resource utilization.

The melting furnace body 21 is provided with a fume exhaust and air outlet at the upper part, which is communicated with the feed material and the fluidized bed heating device 3 .

The refractory insulation layer 22 is disposed on the outer side of the melting furnace body 21 and is composed of a refractory insulation material, so as to reduce the heat dissipation of the melting furnace body 21 during the melting process.

In the embodiment shown in FIG. 1 , the refractory thermal insulation layer 22 is composed of corundum bricks, high-alumina refractory bricks, high-temperature-resistant castables and aluminum silicate refractory fiber thermal insulation materials in order from the inside to the outside, so as to ensure the temperature of the outer wall of the melting furnace body 21 not higher than the specified value. Optionally, specify a value of 60°C.

Among them, corundum bricks refer to refractory products with alumina content greater than 90% and corundum as the main crystal phase, good chemical stability, strong resistance to acidic or alkaline slag, metal and glass liquid, etc. ability.

High-alumina refractory brick refers to an aluminum silicate refractory material with an alumina content of more than 48%. It has good thermal stability and can withstand high temperatures of 1770 °C.

High temperature resistant castable refers to cement-based mortar with admixtures and admixtures added to aluminate cementitious materials and special aggregates.

Aluminum silicate refractory fiber thermal insulation material refers to thermal insulation material with high-strength structure of microporous network, which uses aluminum silicate fiber as the main raw material.

The cooling pool 23 is connected to the overflow port provided at the bottom of the melting furnace body 21, and cools the inflowing molten liquid into glassy slag. Most of the heavy metals are fixed in the glassy slag to achieve harmless treatment. It is difficult to leach and harm the environment. After identification of hazardous waste, glassy slag can be used as a general solid waste for resource utilization such as roadbed and building materials.

The sockets of the oxygen-enriched combustion gun are arranged at the bottom of the melting furnace body 21 , and the number and arrangement are corresponding to those of the oxygen-enriched combustion gun 13 .

Oxygen-enriched combustion gun sockets are evenly arranged at the lower part of the melting furnace body 21 at equal intervals, and the oxygen-enriched combustion spray gun 13 is inserted into the oxygen-enriched combustion gun socket to form a tangential flame in the furnace chamber of the melting furnace body 21, effectively stirring the molten material for vortex rotation sports.

In the embodiment shown in FIG. 1 , the number of sockets of the oxygen-enriched combustion lance is 5, which corresponds to the oxy-enriched combustion lance 13 .

2 shows a schematic diagram of the position of the oxy-fuel combustion lance socket according to an embodiment of the present invention. As shown in FIG. 2 , five oxy-enriched combustion lance sockets are evenly arranged in the lower part of the melting furnace body 21, which are the first oxy-fuel combustion lance sockets respectively. 24. The second oxygen-enriched combustion spray gun socket 25, the third oxygen-enriched combustion spray gun socket 26, the fourth oxygen-enriched combustion spray gun socket 27, and the fifth oxygen-enriched combustion spray gun socket 28.

As shown in Figure 2, the inner channels of the 5 oxygen-enriched combustion lance sockets are at an angle of 15-30° downward with the horizontal direction, and are arranged obliquely downward. 30° included angle, thereby ensuring that the flame of the oxygen-enriched combustion lance forms a tangential rotation in the furnace chamber of the melting furnace body 21, and stirs the fly ash at the bottom of the melting furnace body 21.

The feeding and fluidized bed heating device 3 includes a feeding hopper 31, a dryer feeder 32, a fluidized bed heater 33 and an air distribution plate 34, and uses the high-temperature flue gas generated by the melting process to dry and feed the material The temperature rise reduces the energy consumption of the melting process and improves the energy utilization efficiency.

The feed hopper 31 is connected with the dryer feeder 32 to provide the material inlet, and the fly ash enters the whole material stirring oxygen-enriched melting device from the feed hopper 31 .

The dryer feeder 32 is connected to the fluidized bed heater 33 , and the materials such as fly ash are dried and then transported to the fluidized bed heater 33 .

The fly ash is fed into the fluidized bed heater 33 via the feed hopper 31 and the dryer feeder 32 and falls onto the air distribution plate 34 .

The air distribution plate 34 is arranged at the bottom of the fluidized bed heater 33 to support the material and evenly distribute the air to ensure the fluidization of the material.

As an air distribution device, the air distribution plate 34 can be a hood type or a dense hole plate type, as long as it can distribute the airflow evenly and densely, and support the material to ensure the fluidization of the material, there are no other special requirements.

The bottom of the fluidized bed heater 33 is connected to the exhaust gas outlet on the upper part of the melting furnace body 21 .

The high temperature flue gas generated by the melting furnace body 21 during the melting process enters the bottom of the fluidized bed heater 33, and then flows through the air distribution plate 34 to uniformly dry the fly ash and effectively reduce the moisture content in the material.

In this embodiment, in order to reduce the moisture content of the materials entering the furnace, the high-temperature flue gas generated during the melting process is used to dry the materials entering the furnace, thereby improving the energy utilization efficiency.

Further, the feeding and fluidized bed heating device 3 has an ash discharge channel at the bottom, which is connected to the melting furnace body 21, and the dried material is directly sent to the melting furnace body 21 through the ash discharge channel for melting.

The dust removal device 4 includes a ceramic filter 41 , an ash storage tank 42 and a furnace feeder 43 .

The air inlet of the ceramic filter 41 is connected to the outlet at the top of the fluidized bed heater 33, and is used to capture the secondary fly ash in the melting process and the dust generated in the drying process, and will contain the secondary fly ash generated in the melting process. The flue gas of the ash and the fugitive dust produced in the drying process is dedusted and purified, and the captured dust is sent back to the ash storage tank 42 .

The bottom of the ceramic filter 41 is connected with the ash storage tank 42 through the ash discharge channel, and the collected dust enters the ash storage tank 42 along the bottom ash discharge channel.

The ash storage tank 42 is connected to the melting furnace feeder 43 , stores the fly ash captured by the ceramic filter 41 , and sends it to the melting furnace feeder 43 .

Furthermore, the ash storage tank 42 is connected with the melting furnace feeder 43 through an ash discharge valve.

The melting furnace feeder 43 is connected to the melting furnace body 21, and sends the fly ash conveyed by the ash storage tank 42 into the melting furnace body 21 for melting treatment, so as to effectively realize the fly ash circulation process and reduce the pollution caused by the melting process.

Furthermore, the top of the ceramic filter 41 is provided with a flue gas outlet, which discharges the purified flue gas and enters the back-end equipment for processing.

In this embodiment, in order to reduce the pollution caused by the secondary fly ash in the melting process, a ceramic filter 41 is provided at the rear end of the melting furnace body 21 to capture the secondary fly ash and dust generated during the melting process and the drying process of the material. , and circulated to the melting furnace body 21 for remelting, which effectively reduces the pollution caused by the melting process.

The utility model proposes a material stirring type oxygen-enriched melting device, which reduces the energy consumption in the melting process, promotes the stirring of the molten material, enhances heat transfer and reduces the melting time, and realizes the utilization of the fly ash melting as a resource, and also realizes the secondary fly ash. cycle to reduce pollution from the melting process.

The material stirring oxygen-enriched melting device proposed by the utility model has the following beneficial effects:

1) Using oxygen-enriched means to increase the melting temperature, strengthen the melting process and reduce heat loss;

2) The arrangement of the oxygen-enriched combustion lances is adjusted to enhance the heat transfer during the melting process;

3) Set up feeding and fluidized bed heating device to reduce material moisture and improve energy utilization efficiency;

4) The installation of a ceramic filter effectively solves the problem of secondary fly ash pollution during the fly ash melting process.

Although the above-described methods are illustrated and described as a series of acts for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the acts, as some acts may occur in a different order in accordance with one or more embodiments and/or occur concurrently with other actions from or not shown and described herein but understood by those skilled in the art.

As shown in this application and in the claims, unless the context clearly dictates otherwise, the words "a", "an", "an" and/or "the" are not intended to be specific in the singular and may include the plural. Generally speaking, the terms "comprising" and "comprising" only imply that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

The above-described embodiments are provided to those who are familiar with the art to realize or use the present invention, and those familiar with the art can make various modifications to the above-described embodiments without departing from the idea of the present invention. Therefore, the protection scope of the present invention is not limited by the above-mentioned embodiments, but should be the maximum scope conforming to the innovative features mentioned in the claims.

Claims (9)

1. The utility model provides a material stirring formula oxygen boosting melting device which characterized in that, includes oxygen boosting burner, melting furnace body device and feed and fluidized bed heating device:

the oxygen-enriched combustion device comprises a plurality of oxygen-enriched combustion spray guns, and is connected with the melting furnace body device to generate flame in the melting furnace body device;

the melting furnace body device comprises a melting furnace body, and is connected with the oxygen-enriched combustion device and the feeding and fluidized bed heating device to melt materials in the melting furnace body;

the feeding and fluidized bed heating device is used for conveying materials required by melting for the melting furnace body device, and heating and drying the materials by using heat generated by the melting furnace body device in the melting process;

the plurality of oxygen-enriched combustion spray guns are uniformly arranged around the bottom of the melting furnace body, generated flames are uniformly distributed in the melting furnace body, tangential rotation is formed in the melting furnace body, and materials located at the bottom of the melting furnace body are stirred.

2. The material stirring type oxygen-enriched melting device according to claim 1, wherein:

the oxygen-enriched combustion spray gun and the horizontal direction form an included angle of 15-30 degrees downwards and are arranged obliquely downwards;

the oxygen-enriched combustion spray gun and the melting furnace body radially form an included angle of 10-30 degrees.

3. The material-agitating oxygen-rich melting device of claim 1, further comprising a fuel storage tank and an oxygen storage tank:

the fuel storage tank is connected with the oxygen-enriched combustion spray gun through a pipeline, and a valve and a flowmeter are arranged on the pipeline to provide fuel for the oxygen-enriched combustion spray gun;

the oxygen storage tank is connected with the oxygen-enriched combustion spray gun through a pipeline, and a valve and a flowmeter are installed on the pipeline to provide oxygen-enriched combustion supporting for the oxygen-enriched combustion spray gun.

4. The material stirring type oxygen-enriched melting device according to claim 1, further comprising a refractory insulating layer, a cooling pool and a plurality of oxygen-enriched combustion gun insertion openings:

the cooling pool is connected with an overflow port arranged at the lower part of the melting furnace body device, and liquid generated by melting the melting furnace body flows into the cooling pool along the overflow port to be cooled so as to form stable glassy state slag;

the fireproof heat-insulating layer is arranged on the outer side of the melting furnace body, so that the heat dissipation of the melting furnace body is reduced;

oxygen-enriched combustion rifle socket, equidistant setting are in melting furnace body bottom, quantity and setting mode and oxygen-enriched combustion spray gun phase-match, and the oxygen-enriched combustion spray gun inserts oxygen-enriched combustion rifle socket, at the inside flame that forms the tangent circle form of melting furnace body, stirs the material and is vortex rotary motion.

5. The material stirring type oxygen-enriched melting device as claimed in claim 1, wherein the feeding and fluidized bed heating device comprises a feeding hopper, a dryer feeder, a fluidized bed heater and an air distribution plate:

the feeding hopper is connected with the feeding machine of the dryer and provides an inlet for materials;

the dryer feeder is connected with the fluidized bed heater and used for drying the materials and then conveying the dried materials to the fluidized bed heater;

the air distribution plate is arranged at the bottom of the fluidized bed heater, supports materials and distributes air uniformly;

the fluidized bed heater is connected with an air outlet of the melting furnace body device, high-temperature flue gas generated by the melting furnace body device is sent into the fluidized bed heater, and the materials are heated and dried through the air distribution plate.

6. The material stirring type oxygen-enriched melting device as claimed in claim 5, wherein an ash discharge channel is arranged at the bottom of the material feeding and fluidized bed heating device and connected with the melting furnace body device, and the material is fed into the melting furnace body through the ash discharge channel for melting.

7. The material stirring type oxygen-enriched melting device of claim 1, further comprising a dust removing device connected with the feeding and fluidized bed heating device, for capturing and purifying the dust and the flue gas in the melting process and the drying process, and feeding the captured material into the melting furnace body device for continuous melting.

8. The material-stirring oxygen-enriched melting device as claimed in claim 7, wherein the dust removing device comprises a ceramic filter, an ash storage tank and a melting furnace melt feeder:

the inlet of the ceramic filter is connected with the outlet of the fluidized bed heater, the bottom of the ceramic filter is connected with the ash storage tank through the ash discharge channel, the ceramic filter collects and purifies the raised dust and flue gas generated in the melting process and the drying process, and the collected materials are sent into the ash storage tank;

the ash storage tank is connected with the melting furnace feeder, stores the materials collected by the ceramic filter and conveys the materials to the melting furnace feeder;

and the melting furnace feeder is connected with the melting furnace body device and is used for feeding the materials conveyed by the ash storage tank into the melting furnace body for melting treatment.

9. The material stirring type oxygen-enriched melting device as claimed in claim 8, wherein the ceramic filter is provided with a flue gas outlet at the top for discharging purified flue gas.

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