Fly ash melting furnace capable of increasing content of vitreous body

Abstract

The invention relates to the technical field of melting furnaces, and discloses a fly ash melting furnace capable of increasing vitreous body content, the fly ash melting furnace comprises a furnace body, a flame interface, a slag outlet and a slag groove are respectively installed outside the furnace body, and a spiral flame assembly used for uniformly heating fly ash is arranged inside the furnace body. The spiral flame assembly comprises two spiral guide curved strips and two transverse guide curved strips, the two spiral guide curved strips are arranged up and down and fixedly connected to the inner wall of the furnace body, the flame connector is arranged to be spirally arranged and obliquely upward, meanwhile, flames are spirally arranged under the limitation of the spiral guide curved strips, and the flame is more uniform. According to the fly ash burner, the contact efficiency of flames and fly ash is improved, the fly ash can be fully heated and melted, as the spirally arranged flames can wrap the fly ash in all directions, all parts of the fly ash can be fully contacted with the high-temperature flames, harmful substances in the fly ash are effectively destroyed, stabilizing treatment is better achieved, and threats of organic pollutants to the environment are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of melting furnaces, in particular to a fly ash melting furnace capable of increasing the content of glass bodies. Background Art

[0002] Fly ash melting furnace is a high-temperature processing equipment, mainly used to treat hazardous wastes such as waste slag and waste ash. Its working principle is to transform waste slag and waste ash into glassy substances through high-temperature melting, thereby achieving harmless disposal and resource utilization of waste.

[0003] Although the existing fly ash melting furnace has achieved a high efficiency in conversion and utilization during the fly ash treatment process, there are still some urgent problems to be solved: First, among the many types of fly ash melting furnaces, the flame jet melting furnace has attracted much attention. The reason why this type of melting furnace is widely favored is that it can quickly melt the fly ash with the help of high-temperature flames. To produce this high-temperature flame, the existence of a fan is very necessary. The fan can provide combustion-supporting gas for the flame to ensure that the flame has sufficient energy. Under the action of such a high-temperature flame, the harmful substances in the fly ash can be efficiently destroyed, thereby achieving the stabilization of the fly ash. This process is of great significance for reducing the threat of organic pollutants to the environment. Not only that, the flame jet method can also promote the melting and reorganization of inorganic components in the fly ash, prompting it to form a glass with excellent physical and chemical properties.

[0004] However, it is not easy to ensure sufficient contact between flame and fly ash. In order to improve the contact efficiency, the existing technology usually adopts the strategy of increasing the number of burners or optimizing their layout. Although this approach improves the contact between flame and fly ash to a certain extent, it also brings new problems.

[0005] First of all, the increase in the number of burners directly leads to a substantial increase in energy consumption. Each burner requires a continuous supply of fuel to maintain stable combustion of the flame, which not only increases operating costs, but also puts higher requirements on the stability and sustainability of energy supply. More importantly, since the outer flame temperature of the flame is high, but the inner flame and flame core temperature are relatively low, there is always a part of the fly ash that cannot fully contact the outer flame of the flame, resulting in poor melting of this part of the fly ash, and even incomplete melting or local overheating. This not only affects the quality and stability of the glass formation, but may also lead to uneven temperature distribution in the furnace, further aggravating the problems of energy waste and equipment wear.

[0006] What is more serious is that there is an obvious asymmetry between the glass content and the energy consumed, that is, the increase in energy consumption has not brought about a corresponding increase in glass production, which greatly reduces the energy efficiency of the entire melting process. In addition, the uneven temperature in the furnace and the incomplete melting of fly ash have a negative impact on the emission performance of the melting furnace. The incompletely melted fly ash particles will also affect the subsequent emission treatment of flue gas, thereby increasing the economic burden. These problems not only affect the environmental performance of the melting furnace, but also pose a potential threat to the surrounding environment and human health.

[0007] Secondly, as the combustion in the furnace continues, the fly ash gradually melts under the action of high temperature and is discharged into the slag trough through the slag outlet. Under the synergistic effect of the slag trough and the refrigeration element, these molten materials gradually cool and solidify to form a stable glass body. However, there is a significant disadvantage in this process: the slag outlet is directly connected to the external environment, which causes the high-temperature molten material to quickly condense on the surface of the slag trough when it comes into contact with the lower external temperature, forming a hard crust.

[0008] This layer of crust not only hinders the smooth discharge of subsequent molten materials, increases the operating resistance of the equipment, but also significantly increases the difficulty of cleaning for operators. In order to meet this challenge, the existing technology attempts to introduce mechanical scraping to replace traditional manual cleaning. However, mechanical scraping is not a perfect solution. On the one hand, due to the extremely high temperature of the molten material, the scraper is prone to deformation or even damage due to thermal expansion and contraction effects or insufficient material tolerance when in direct contact, which not only increases the maintenance cost of the equipment, but also reduces the cleaning efficiency. On the other hand, even if a scraper is made of high-temperature resistant material, some components in the molten material are still firmly attached to the scraper surface due to their strong adhesion, forming residues that are difficult to remove, further affecting the scraping effect. In the long run, cleaning and replacement of the scraper will become a frequent and tedious task, posing a severe challenge to the continuous and stable operation of the equipment.

[0009] To this end, the present invention proposes a fly ash melting furnace capable of increasing the glass content. Summary of the invention

[0010] The object of the present invention is to provide a fly ash melting furnace capable of increasing the glass content, so as to solve the problems raised in the above-mentioned background technology.

[0011] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fly ash melting furnace capable of increasing the glass content, comprising a furnace body, the outside of which is respectively provided with a flame interface, a slag outlet and a slag trough, the interior of the furnace body is provided with a spiral flame assembly for uniformly heating the fly ash, the spiral flame assembly comprising two spiral guide curves and two transverse guide curves, the two spiral guide curves being arranged up and down and fixedly connected to the inner wall of the furnace body, and the axis between the two spiral guide curves is colinear with the axis of the output end of the flame interface, and the two transverse guide curves are respectively fixedly connected to one side of the spiral guide curve close to the center of the furnace body.

[0012] Preferably, the bottom of the transverse guide curved strip located at the top is designed to be sharp and inclined toward the side close to the center of the furnace body, and the top of the transverse guide curved strip located at the bottom is designed to be sharp and inclined toward the side close to the center of the furnace body.

[0013] Preferably, a plurality of flame interfaces are provided, and all of the flame interfaces are installed on the outer surface of the furnace body, a feed port is installed on the top of the furnace body, a slag outlet is installed on the bottom of the furnace body, and a fixing rod is fixedly connected to the bottom of the slag trough.

[0014] Preferably, a fan unit is provided outside the furnace body, a plurality of the flame interfaces are arranged in a spiral outside the furnace body, and the output ends thereof are located inside the furnace body, and the flame interfaces are arranged to be inclined.

[0015] Preferably, the interior of the furnace body is provided with a hot air guide component for preventing the molten fly ash from condensing on the surface of the slag outlet due to temperature changes, and the hot air guide component includes a guide hood and a plurality of spiral guide pipes; the spiral guide pipes are used to guide the hot air inside the furnace body to the inside of the guide hood based on the principle of natural rise of hot air; the lower end of the guide hood is a gradually expanding shape, and the guide hood is used to allow the hot air to be blown back to the slag outlet through its own guiding effect, thereby preventing the excessive temperature change while allowing the molten fly ash to maintain a relatively high temperature state and further preventing it from condensing.

[0016] Preferably, the spiral flow guide pipes are all arranged in a circular shape and equidistantly fixedly connected to the top side of the inner wall of the flow guide cover, and the bottom of the spiral flow guide pipe is perpendicular to the ground.

[0017] Preferably, the hot air guide assembly also includes a plurality of diverter plates, each of which is fixedly connected to the bottom of the spiral guide tube, the bottom of the guide cover is fixedly connected to an acceleration sleeve, and a plurality of curved guide plates are fixedly connected to the inner wall of the guide cover in a circular and equidistant arrangement.

[0018] Preferably, the diverter plates are all inclined, the accelerating sleeve is arranged to be in a contracted shape as a whole, the curved guide plate is arranged to be spiral, and one end of the spiral guide tube located inside the guide cover is consistent with the bending direction of the curved guide plate.

[0019] Preferably, a plurality of inclined baffles are fixedly connected to the inner wall of the accelerating sleeve, a plurality of arc-shaped reflective plates are fixedly connected to the bottom of the inner wall of the furnace body, and a plurality of bearing rods are fixedly connected between the arc-shaped reflective plates and the accelerating sleeve.

[0020] Preferably, every two inclined baffles are arranged as a group, and each group of inclined baffles is located at two sides of the bottom of the curved guide plate.

[0021] Preferably, solenoid valves are installed inside the slag outlet and the feed inlet.

[0022] Preferably, a water cooling jacket is installed outside the slag trough.

[0023] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting the flame interface to be arranged in a spiral and inclined upward, and at the same time the flame is arranged in a spiral under the restriction of the spiral guide curved strip, the contact efficiency between the flame and the fly ash is improved, which helps the fly ash to be fully heated and melted, because the spirally arranged flame can wrap the fly ash in all directions, so that all parts of the fly ash can be fully in contact with the high-temperature flame, effectively destroying harmful substances in the fly ash, better realizing stabilization treatment, reducing the environmental threat of organic pollutants, and at the same time, it can also promote the full melting and reorganization of inorganic components in the fly ash to form a high-quality, stable glass body, providing more favorable conditions for subsequent utilization or disposal.

[0024] Compared with the prior art, the prior art improves the contact efficiency between flame and fly ash by increasing the number of flame interfaces or optimizing the layout, but has many disadvantages. The present invention arranges the flame interfaces spirally and cooperates with the design of the spiral flame assembly structure to reduce the use of flame interfaces. This not only reduces the initial cost of the equipment, but also reduces energy consumption, because there is no need to provide fuel for too many flame interfaces. At the same time, it also reduces the requirements for energy supply stability and sustainability, and improves the energy efficiency ratio of the entire melting process.

[0025] Among them: the lateral guide curved strips can limit the flow of the flame from the side, so as to maintain the stability of the flame. When the flame is ejected obliquely upward at the flame interface and spirally guided by the spiral guide curved strips, the lateral guide curved strips can prevent the flame from excessively spreading to the side, so that the flame remains in a relatively stable spiral trajectory, which helps to ensure that the contact between the flame and the fly ash is always in a stable and efficient state, ensuring the melting effect of the fly ash, thereby improving the formation quality and stability of the glass body.

[0026] Among them: due to the limiting effect of the spiral guide curved strips and the transverse guide curved strips, it is difficult for fly ash particles to move to the output end of the flame interface, thereby effectively preventing fly ash from clogging the flame interface. In a traditional melting furnace, fly ash will accumulate near the flame interface, causing the flame interface to be blocked, affecting the normal ejection and combustion efficiency of the flame. The limiting effect of the spiral guide curved strips and the transverse guide curved strips on fly ash prevents fly ash from approaching the flame interface, thereby ensuring the normal operation of the flame interface, reducing the risk of equipment failure, and improving the reliability of equipment operation.

[0027] The spiral flame can also clean the inner wall of the furnace, thus preventing fly ash from adhering to the inner wall of the furnace. During the process of the spiral flame rotating and rising in the furnace, it can flush the inner wall of the furnace to a certain extent, and take away the fly ash particles that may be attached to the wall. This helps to keep the inner wall of the furnace clean and reduce the residual fly ash in the furnace.

[0028] 2. Based on the principle of natural rise of hot air, the hot air enters the interior of the guide cover through the spiral guide pipe. The spiral shape of the spiral guide pipe can increase the travel of the hot air, so that the hot air can be fully preheated in the pipe and its energy can be increased. Then, under the guidance of the guide cover, the hot air is blown back to the slag outlet. The hot air can effectively neutralize the temperature difference between the slag outlet and the outside world, and prevent the high-temperature molten material from condensing at the slag outlet. Therefore, the hot air guide component improves the patency of the slag outlet, contributes to the smooth discharge of the molten material, improves the operating efficiency of the equipment, and reduces equipment failures caused by crusting.

[0029] Compared with the existing technology of using mechanical scraping to deal with crusting at the slag outlet, the mechanical scraping method has many problems. The scraper is easily damaged by high temperature, which increases maintenance costs and reduces cleaning efficiency. At the same time, the strong adhesion of the molten material will also affect the scraping effect. The hot air guide component prevents the formation of crusting from the source, avoiding a series of troubles caused by mechanical scraping and ensuring that the equipment can operate more stably and continuously.

[0030] Among them: when hot air rises, it will carry some tiny particles. The inclined diverter plate can change the direction of the airflow, making it difficult for the particles to enter the spiral guide tube under the action of gravity, thereby avoiding the accumulation and blockage of particles in the tube, ensuring the normal flow of hot air in the spiral guide tube, and then ensuring the stable operation of the entire hot air guide assembly.

[0031] Among them: the spiral curved guide plate can guide the hot air entering the guide cover more precisely, so that the hot air flows along a spiral trajectory and enhances the flow stability of the hot air. This allows the hot air to be more evenly distributed in the guide cover, thereby being more effectively guided to the slag outlet.

[0032] Among them: the inclined baffle can adjust the flow direction of the hot air after passing through the curved guide plate, so that the hot air flows to the slag outlet more concentratedly and orderly, enhances the protective effect of the hot air on the slag outlet, and prevents the occurrence of crusting.

[0033] Among them: when the hot air blows toward the slag outlet, part of the hot air will change direction, and the arc-shaped reflector can reflect this part of the hot air that changes direction back, so that it is engulfed by the mainstream hot air and blown toward the slag outlet again.

[0034] Among them: when the hot air flows through the contracting acceleration sleeve, according to the principles of fluid mechanics, the reduction in the cross-sectional area of ​​the flow channel will increase the flow velocity of the hot air. The higher flow velocity enables the hot air to reach the slag outlet more quickly, thereby neutralizing the temperature difference between the slag outlet and the outside world more promptly.

[0035] Among them: the existence of the arc-shaped reflection plate not only provides a reflection effect, but also provides support for the entire hot air guide assembly through the bearing rod on the top.

[0036] While achieving the above-mentioned beneficial effects, the present invention also has the following advantages: the arc-shaped structure of the arc-shaped reflective plate can play a certain guiding role on the molten fly ash, similar to the effect of diversion. When the molten fly ash flows toward the slag outlet, the arc-shaped reflective plate can guide it to flow along a specific path, making the flow of the fly ash more orderly and smooth, and reducing the disorder and blockage of the fly ash during the flow process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0038] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0039] Figure 3 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention.

[0040] Figure 4 It is a cross-sectional perspective schematic diagram of the hot air guide assembly and the spiral flame assembly of the present invention.

[0041] Figure 5 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0042] Figure 6 It is a three-dimensional schematic diagram of the hot air guide assembly of the present invention.

[0043] Figure 7 It is a top view and a cross-sectional perspective schematic diagram of the hot air guide assembly of the present invention.

[0044] Figure 8 The figure is a schematic cross-sectional perspective view of the spiral flow guide tube of the present invention.

[0045] Fig. 9 For the present invention Figure 8 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0046] Fig.10 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0047] In the figure: 11, furnace body; 12, flame interface; 13, feed inlet; 14, slag outlet.

[0048] 2. Hot air guide assembly; 21. Air guide cover; 22. Spiral air guide tube; 23. Diverter plate; 24. Acceleration sleeve; 25. Curved air guide plate; 26. Inclined baffle; 27. Arc reflector.

[0049] 3. Spiral flame assembly; 31. Spiral guide curved strip; 32. Horizontal guide curved strip. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that the flame interface 12 has the function of connecting to an external fire supply device, while the external fire supply device only provides flames, and the vibrator only provides vibration for the furnace body 11, thereby reducing the adhesion of fly ash to the inner wall of the furnace body 11. Its technical principles and implementation methods belong to the scope of the prior art. In view of the versatility and maturity of the external fire-supporting equipment, its specific structure and working principle will not be described in detail later.

[0052] The fan unit only serves to provide combustion-supporting gas to the inside of the furnace body 11. At the same time, its air inlet is arranged at the bottom side of the furnace body 11 and obliquely exits at the upper edge, while the air outlet is arranged at the side of the furnace body 11. At the same time, the technical principle and implementation method of the fan unit belong to the scope of the existing technology. In view of the versatility and maturity of the fan unit, its specific structure and working principle will not be described in detail later.

[0053] Solenoid valves are installed inside the slag outlet 14 and the feed inlet 13, and a water cooling jacket is installed outside the slag tank to cool the molten fly ash and solidify it into a glass body.

[0054] Example 1, please refer to Figure 3 , Figure 4 as well as Fig.10As shown, a fly ash melting furnace capable of increasing the glass content comprises a furnace body 11, the outside of the furnace body 11 is respectively provided with a flame interface 12, a slag outlet 14 and a slag trough, the interior of the furnace body 11 is provided with a spiral flame assembly 3 for uniformly heating the fly ash, the spiral flame assembly 3 comprises two spiral guide curved strips 31 and two transverse guide curved strips 32, the two spiral guide curved strips 31 are arranged up and down and fixedly connected to the inner wall of the furnace body 11, and the axis between the two spiral guide curved strips 31 is colinear with the axis of the output end of the flame interface 12, and the two transverse guide curved strips 32 are respectively fixedly connected to one side of the spiral guide curved strip 31 close to the center of the furnace body 11.

[0055] It should be noted that the bottom of the upper transverse guide curved bar 32 is designed to be sharp and is inclined toward the side close to the center of the furnace body 11, and the top of the lower transverse guide curved bar 32 is designed to be sharp and is inclined toward the side close to the center of the furnace body 11. A vibrator is installed on the outside of the furnace body 11, and an alumina coating is provided on the inner wall of the furnace body 11.

[0056] Specifically, the operator first puts the fly ash into the furnace body 11 through the feed port 13, and then starts the external fire supply equipment, the fan unit and the vibrator outside the furnace body 11. The external fire supply equipment stably transports the flame to the interior of the furnace body 11 through the flame interface 12 to provide the necessary combustion conditions.

[0057] At the same time, the fan unit starts to work. Since the air inlet of the fan unit is cleverly arranged at the bottom edge of the furnace body 11, and the air outlet is located at the side of the furnace body 11 and obliquely upward, this design allows the air to enter from the bottom edge of the furnace body 11 under the action of the fan, and be blown out from the obliquely upward air outlet at the side of the furnace body 11 along the preset airflow path. That is, an airflow direction from the bottom edge to the side and obliquely upward is formed inside the furnace body 11.

[0058] Secondly, since the flame interfaces 12 are arranged in a spiral upward outside the furnace body 11, the flame has a tangential force when being transported.

[0059] At this time, the two spiral guide strips 31 located on the inner wall of the furnace body 11 begin to play a guiding role. The tangential force of the flame gives it an initial momentum along the spiral direction of the flame interface 12. When the flame contacts the spiral guide strips 31, the spiral guide strips 31 exert a normal constraint force on the flame. According to Newton's second law, the flame will change its direction of movement under this constraint force. Since the guiding effect of the spiral guide strips 31 is along a specific direction, the flame will gradually form a spiral flame.

[0060] The spiral flame can increase the contact area between the flame and the fly ash. Compared with the ordinary flame, the spiral flame is distributed in a spiral shape inside the furnace body 11. Its trajectory in three-dimensional space is longer, and it can more comprehensively cover the space inside the furnace body 11, so that the fly ash can be more fully in contact with the flame at various positions in the furnace body 11, thereby achieving more uniform heating. Secondly, the rotation characteristics of the spiral flame give it a strong scouring ability. During the spiral rising process, the flame will generate a centrifugal force on the inner wall of the furnace body 11 due to its own rotational motion. This centrifugal force will drive the flame to approach the inner wall of the furnace body 11, thereby achieving a scouring effect on the inner wall.

[0061] In addition, under the vibration of the vibrator, the alumina coating on the inner wall of the furnace body 11 and the scouring of the spiral flame form a synergistic effect: the periodic mechanical vibration generated by the vibrator causes the fly ash particles attached to the inner wall to detach, and the centrifugal scouring of the spiral flame further draws the detached fly ash into the combustion zone, while the low surface energy characteristics of the alumina coating reduce the probability of fly ash adhesion.

[0062] In this process, the transverse guide curved strips 32 also play an important role. The bottom of the upper transverse guide curved strips 32 is sharp and inclined toward the side close to the center of the furnace body 11, and the top of the lower transverse guide curved strips 32 is sharp and inclined toward the side close to the center of the furnace body 11. When the spiral flame moves in the furnace body 11, due to the sharp shape and inclination angle of the transverse guide curved strips 32, the flame will be subjected to a deflection force applied by the transverse guide curved strips 32. For the upper transverse guide curved strips 32, part of the flame will be guided toward the center of the furnace body 11 under the action of the sharp part at the bottom, and for the lower transverse guide curved strips 32, part of the flame will be guided toward the center of the furnace body 11 under the action of the sharp part at the top.

[0063] This guiding effect has important benefits. On the one hand, it can further enhance the mixing effect of the flame inside the furnace body 11. The flame guided to the center of the furnace body 11 by the transverse guiding curved strips 32 is mixed with the flame originally near the center, so that the fly ash in the central area of ​​the furnace body 11 can also be fully heated, thereby further improving the uniformity of heating of the fly ash. On the other hand, the guiding effect of the transverse guiding curved strips 32 on the flame helps to adjust the distribution of the flame in the furnace body 11. Under the action of the transverse guiding curved strips 32, the distribution of the flame in the furnace body 11 is more reasonable, avoiding the situation where the flame is too concentrated in some areas and insufficient in other areas, ensuring that the fly ash in the entire furnace body 11 can be melted at a suitable temperature. At the same time, the guidance of the flame by the transverse guiding curved strips 32 can also enhance the stirring effect of the flame on the fly ash to a certain extent, so that the fly ash rolls continuously in the furnace body 11, which is more conducive to the heat exchange between the fly ash and the flame, improves the heating efficiency of the fly ash, and thus improves the working efficiency and processing effect of the entire furnace body 11.

[0064] In addition, the uniform movement of the spiral flame also improves the problem of temperature difference between the outer flame and the flame core when ordinary flames heat fly ash. Due to its spiral movement, the spiral flame will continuously disturb the surrounding gas, so that the fuel and oxygen inside the flame interface 12 are more fully mixed, so that the combustion reaction in the flame core area will be more complete and release more heat.

[0065] Finally, as the heating process continues, the temperature in the furnace body 11 gradually increases. During this process, the fly ash is continuously heated and eventually forms a molten substance. Further, the molten fly ash will move to the slag outlet 14 based on gravity. At this time, the operator opens the solenoid valve and allows the molten fly ash to flow out from the slag outlet 14. When the molten fly ash flows to the slag trough, it will cool due to the cooling effect of the water-cooled jacket and eventually form the desired glass body.

[0066] It should be noted that the sufficient combustion of the spiral flame improves the thermal efficiency of the entire system, thereby making the workload of the fan unit relatively stable. For example, in an industrial heating furnace system that needs to maintain a specific temperature, due to more complete combustion, the fan does not need to excessively adjust the air volume to compensate for the heat loss caused by incomplete combustion, thereby reducing the frequent adjustment of the fan, which is beneficial to extending the service life of the fan. The complex airflow movement generated by the spiral flame can interact with the airflow generated by the fan to enhance the overall airflow mixing effect.

[0067] Example 2, please refer to Figures 1 to 5As shown, the interior of the furnace body 11 is provided with a hot air guide assembly 2 for preventing the molten fly ash from condensing on the surface of the slag outlet 14 due to temperature changes. The hot air guide assembly 2 includes a guide cover 21 and a plurality of spiral guide pipes 22; the spiral guide pipes 22 are used to guide the hot air inside the furnace body 11 to the inside of the guide cover 21 based on the principle of natural rise of hot air; the lower end of the guide cover 21 is a gradually expanding shape, and the guide cover 21 is used to allow the hot air to be blown back to the slag outlet 14 through its own guiding effect, thereby preventing the excessive temperature change while allowing the molten fly ash to be maintained at a relatively high temperature state and further preventing it from condensing.

[0068] Please refer to Figures 1 to 9 As shown, the hot air guide assembly 2 also includes a plurality of diverter plates 23, which are fixedly connected to the bottom of the spiral guide tube 22, the bottom of the guide cover 21 is fixedly connected to an acceleration sleeve 24, a plurality of curved guide plates 25 are fixedly connected to the inner wall of the guide cover 21 in a circular and equidistant arrangement, a plurality of inclined baffles 26 are fixedly connected to the inner wall of the acceleration sleeve 24, a plurality of arc-shaped reflection plates 27 are fixedly connected to the bottom of the inner wall of the furnace body 11, and a plurality of bearing rods are fixedly connected between the arc-shaped reflection plates 27 and the acceleration sleeve 24.

[0069] It should be noted that the spiral guide tubes 22 are all arranged in an annular manner and fixedly connected to the top side of the inner wall of the guide cover 21. The bottom of the spiral guide tube 22 is perpendicular to the ground. The diverter plates 23 are all inclined. The acceleration sleeve 24 is configured to be in a contracted state as a whole. The curved guide plate 25 is configured to be spiral. The end of the spiral guide tube 22 located inside the guide cover 21 is consistent with the bending direction of the curved guide plate 25. Every two inclined baffles 26 are configured as a group, and the inclined baffles 26 are located on both sides of the bottom of the curved guide plate 25. There are multiple flame interfaces 12, and the flame interfaces 12 are all installed on the outer surface of the furnace body 11, a feed port 13 is installed on the top of the furnace body 11, a slag outlet 14 is installed at the bottom of the furnace body 11, a fixing rod is fixedly connected to the bottom of the slag trough, and one end of the fixing rod away from the slag trough is in contact with the ground, a fan unit is arranged outside the furnace body 11, and several flame interfaces 12 are spirally arranged outside the furnace body 11, and the output end thereof is located inside the furnace body 11, and the flame interfaces 12 are all arranged to be inclined.

[0070] Specifically, in the first embodiment, since the flame interface 12 continuously sprays flames, the fly ash inside the furnace body 11 is always in a molten state, which keeps the temperature inside the furnace body 11 quite high.

[0071] At the same time, the setting of the air inlet and outlet in the fan unit will make the air have an upward and oblique airflow direction toward the side from the bottom edge of the furnace body 11. At the same time, based on the principle that hot air rises naturally, the hot air inside the furnace body 11 will rise, and then part of the hot air will enter the spiral guide tube 22 through the diverter plate 23. Since the diverter plate 23 is inclined, this inclined structure can effectively prevent fly ash particles from entering the spiral guide tube 22 with the hot air. Because the fly ash particles have a certain inertia driven by the hot air, when encountering the inclined diverter plate 23, the particles are blocked because they cannot smoothly change the direction of movement, thereby preventing the particles from entering the spiral guide tube 22 and avoiding problems such as blockage.

[0072] The hot air smoothly passes through the splitter plate 23 and enters the spiral guide tube 22. At the same time, the spiral structure of the spiral guide tube 22 greatly increases the stroke of the hot air. When the hot air flows in the spiral guide tube 22, the increase in stroke allows the hot air to have more contact time with the wall of the spiral guide tube 22, thereby better retaining heat, reducing heat loss, and improving the utilization rate of the hot air. In addition, due to the shape of the spiral guide tube 22 itself, the hot air inside it will flow in a spiral manner, forming a spiral fluid.

[0073] It should be noted that the diameter of the spiral guide tube 22 is relatively small. From the perspective of heat exchange efficiency, a smaller diameter helps to form a more concentrated hot air flow. When the hot air flows in the smaller spiral guide tube 22, due to the relatively narrow space, the distance between the hot air molecules and the tube wall is closer, and the heat transfer between the hot air and the tube wall is more efficient, which can more effectively utilize the heat carried by the hot air and reduce the loss of heat to the surrounding environment.

[0074] Secondly, since the interior of the furnace body 11 is in a high temperature state, the hot air is generated at a faster speed, and the hot air molecules have a higher internal energy. According to the ideal gas state equation, in the relatively closed space of the furnace body 11, when the temperature is high, the pressure of the hot air is also relatively large, which prompts the hot air to flow toward the spiral guide tube 22 at a faster speed. Although the diameter of the spiral guide tube 22 is small, due to the high-speed flow of the hot air and the large pressure difference caused by the high temperature inside the furnace body 11, it can ensure that a sufficient amount of hot air enters the spiral guide tube 22.

[0075] Furthermore, when the hot air enters the spiral guide tube 22, it has a certain initial kinetic energy due to the temperature difference and pressure difference inside the furnace body 11. Moreover, the spiral structure of the spiral guide tube 22 constrains and guides the flow of the hot air. When the hot air flows along the spiral path, its flow direction keeps changing, just like an object moving in a curve. According to the kinetic energy theorem, the kinetic energy of the hot air in this process will be redistributed and transformed under the constraint of the tube wall, thereby enhancing the kinetic energy of the hot air to a certain extent.

[0076] Afterwards, the hot air will enter the interior of the air deflector 21, and due to the expansion of its lower end, its upper end is contracted relative to the lower end, so the expansion trend of the upper end can guide the hot air to flow downward, and the hot air will further form a more orderly flow state inside the air deflector 21, thereby increasing the flow rate and pressure. As the hot air continues to flow, it will pass through the inclined baffle 26. Due to the inclined setting of the baffle, the hot air will be blocked and guided by the inclined baffle 26, that is, the hot air applies a pressure perpendicular to the surface of the inclined baffle 26 to the inclined baffle 26, and the inclined baffle 26 applies a reaction force to the hot air, and this reaction force further changes the flow direction of the hot air, and due to the inclination angle of the inclined baffle 26, the hot air will have a certain compression effect while changing the flow direction, thereby further increasing the flow rate and pressure of the hot air.

[0077] Next, the hot air enters the accelerating sleeve 24 . During this process, the hot air is gradually constrained by the tapered structure. As the cross-sectional area gradually decreases, the flow rate of the hot air increases, forming an acceleration effect. In this way, under the action of the accelerating sleeve 24 , the hot air can more effectively rush toward the slag outlet 14 .

[0078] When the hot air hits the slag outlet 14, the surface of the slag outlet 14 exerts a normal reaction force on the hot air, causing the flow direction of the hot air to change. At this time, the arc reflector 27 plays a role. The arc reflector 27 can reflect the part of the gas with changed angle back according to its own arc shape, so that it is carried by the mainstream gas again and continues to blow toward the slag outlet 14.

[0079] The hot air blown toward the slag outlet 14 can, on the one hand, prevent the molten fly ash from condensing on the surface of the slag outlet 14 due to temperature changes. This is because the molten fly ash is prone to condensation if the temperature drops too quickly at the slag outlet 14, and the blowing of hot air can maintain a relatively high temperature near the slag outlet 14, ensuring that the fly ash is in a molten state, thereby accelerating the discharge speed and allowing the fly ash to be discharged smoothly.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fly ash melting furnace capable of increasing the glass content, comprising a furnace body (11), wherein a flame interface (12), a slag outlet (14) and a slag trough are respectively installed on the outside of the furnace body (11), characterized in that: A spiral flame assembly (3) for uniformly heating fly ash is arranged inside the furnace body (11), and the spiral flame assembly (3) comprises two spiral guide curved strips (31) and two transverse guide curved strips (32). The two spiral guide curved strips (31) are arranged vertically and fixedly connected to the inner wall of the furnace body (11), and the axis between the two spiral guide curved strips (31) is collinear with the axis of the output end of the flame interface (12), and the two transverse guide curved strips (32) are respectively fixedly connected to one side of the spiral guide curved strip (31) close to the center of the furnace body (11).

2. A fly ash melting furnace capable of increasing the glass content according to claim 1, characterized in that: The bottom of the transverse guide curved strip (32) located at the top is sharp and inclined toward the side close to the center of the furnace body (11), and the top of the transverse guide curved strip (32) located at the bottom is sharp and inclined toward the side close to the center of the furnace body (11).

3. The fly ash melting furnace capable of increasing the glass content according to claim 1, characterized in that: A plurality of flame interfaces (12) are provided, and the flame interfaces (12) are all installed on the outer surface of the furnace body (11), a feed port (13) is installed on the top of the furnace body (11), the slag outlet (14) is installed on the bottom of the furnace body (11), and a fixing rod is fixedly connected to the bottom of the slag trough.

4. The fly ash melting furnace capable of increasing the glass content according to claim 1, characterized in that: A fan unit is arranged outside the furnace body (11), a plurality of flame interfaces (12) are arranged in a spiral outside the furnace body (11), and their output ends are located inside the furnace body (11), and the flame interfaces (12) are arranged in an inclined posture.

5. The fly ash melting furnace capable of increasing the glass content according to claim 1, characterized in that: A hot air guide assembly (2) is provided inside the furnace body (11) for preventing molten fly ash from condensing on the surface of the slag outlet (14) due to temperature changes. The hot air guide assembly (2) comprises a guide hood (21) and a plurality of spiral guide pipes (22). The spiral guide pipes (22) are used to guide the hot air inside the furnace body (11) to the inside of the guide hood (21) based on the principle of natural rise of hot air. The lower end of the guide hood (21) is in a gradually expanding shape. The guide hood (21) is used to allow the hot air to be blown in the opposite direction to the slag outlet (14) through its own guiding effect, thereby preventing excessive temperature changes while maintaining the molten fly ash at a relatively high temperature and further preventing it from condensing.

6. A fly ash melting furnace capable of increasing the glass content according to claim 5, characterized in that: The spiral flow guide pipes (22) are all arranged in an annular shape and at equal intervals and are fixedly connected to the top side of the inner wall of the flow guide cover (21); the bottom of the spiral flow guide pipes (22) is perpendicular to the ground.

7. A fly ash melting furnace capable of increasing the glass content according to claim 6, characterized in that: The hot air guide assembly (2) further comprises a plurality of flow dividers (23), each of the flow dividers (23) being fixedly connected to the bottom of the spiral flow guide tube (22), the bottom of the flow guide cover (21) being fixedly connected to an acceleration sleeve (24), and a plurality of curved flow guide plates (25) being fixedly connected and arranged in an annular manner and at equal intervals on the inner wall of the flow guide cover (21).

8. The fly ash melting furnace capable of increasing the glass content according to claim 7, characterized in that: The flow dividers (23) are all arranged obliquely, the accelerating sleeve (24) is arranged to be in a contracted state as a whole, the curved flow guide plate (25) is arranged to be spirally shaped, and one end of the spiral flow guide tube (22) located inside the flow guide cover (21) is in the same bending direction as the curved flow guide plate (25).

9. A fly ash melting furnace capable of increasing the glass content according to claim 8, characterized in that: A plurality of inclined baffles (26) are fixedly connected to the inner wall of the accelerating sleeve (24), a plurality of arc-shaped reflection plates (27) are fixedly connected to the bottom of the inner wall of the furnace body (11), and a plurality of bearing rods are fixedly connected between the arc-shaped reflection plates (27) and the accelerating sleeve (24).

10. The fly ash melting furnace capable of increasing the glass content according to claim 9, characterized in that: Every two inclined baffles (26) are arranged as a group, and each group of inclined baffles (26) is located on both sides of the bottom of the curved guide plate (25).

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