Household garbage incinerator

Abstract

The invention discloses a household garbage incinerator, and relates to the technical field of household garbage incineration, the household garbage incinerator comprises an incinerator body and a top material pressing mechanism, the incinerator body is provided with a feeding channel, a bottom plate of the feeding channel extends into an inner cavity of the incinerator body, and the top material pressing mechanism comprises a pressing rod and a first driving part; the motion path of the pressing rod corresponds to the blanking area of the feeding channel; in the process that compressed garbage enters the incinerator body from the feeding channel, one part of the compressed garbage falls from the two sides of the extending bottom plate to play a role in garbage dispersion, the other part of the compressed garbage falls from the end of the bottom plate, and due to the fact that the bottom plate is subjected to extending treatment, the part of the garbage falling from the end of the bottom plate can be close to the middle of the incinerator body, so that the unilateral problem is solved; and the linear motion of the pressing rod extrudes the garbage, the overhead problem is solved, the distribution uniformity of the garbage in the incinerator body is improved, the incineration efficiency and the incineration effect are improved, the garbage is fully treated, the garbage treatment capacity is improved, and discharged flue gas reaches the standard.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic waste incineration, and particularly to a domestic waste incinerator. Background Art

[0002] With the improvement of the living standards of rural residents, the quantity of domestic waste is increasing continuously. The traditional waste treatment methods are difficult to meet the environmental protection requirements. Incineration, as an effective waste treatment method, has broad application prospects in rural areas.

[0003] The commonly used equipment for waste incineration is a waste incinerator. The current waste incinerator consists of a furnace body, an oxygen supply system, and a smoke exhaust system. During actual incineration, the compressed waste is put into the furnace body from the feed inlet of the furnace body, oxygen is supplied and ignition is carried out to make the waste start to burn, and the flue gas generated by combustion is discharged from the smoke exhaust system. However, after the waste is put into the waste incinerator, there is a problem of unilateral accumulation of waste at the position close to the feed inlet in the inner cavity of the furnace body, resulting in uneven distribution of waste in the furnace body. Moreover, there are problems of waste coking and bridging during the waste incineration process, seriously affecting the incineration efficiency and incineration effect, and further leading to problems such as insufficient waste treatment, insufficient waste treatment capacity, and non-compliant emissions.

[0004] Therefore, there is an urgent need for a domestic waste incinerator with high incineration efficiency and good incineration effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a domestic waste incinerator to solve the problems existing in the above-mentioned prior art. By designing a feed channel and a top pressing mechanism, the uniformity of waste distribution is improved, and the incineration efficiency, incineration effect, and waste treatment capacity are enhanced.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a domestic waste incinerator, including a furnace body and a top pressing mechanism. A feed channel is provided on the furnace body, and the bottom plate of the feed channel extends into the inner cavity of the furnace body. The top pressing mechanism includes a pressing rod and a first driving component that generates linear motion. The movement path of the pressing rod corresponds to the material dropping area of the feed channel.

[0007] Preferably, a material loosening mechanism is provided at the bottom of the furnace body. The material loosening mechanism includes a top rod and a second driving component that generates linear motion. One end of the top rod extends into the inner cavity of the furnace body, and the top rod is connected to the second driving component.

[0008] Preferably, the top rod is hollow. Air outlet holes are provided in the part of the top rod located inside the furnace body, and air inlet holes are provided in the part of the top rod located outside the furnace body. The air inlet holes are connected to the oxygen supply system.

[0009] Preferably, the furnace body is provided with at least one first material leveling and slag breaking mechanism and a plurality of second material leveling and slag breaking mechanisms. The first material leveling and slag breaking mechanism is located below the feeding channel. The plurality of second material leveling and slag breaking mechanisms are evenly arranged along the circumferential direction of the furnace body. The second material leveling and slag breaking mechanisms are arranged corresponding to the slagging areas in the furnace body. The horizontal height of the second material leveling and slag breaking mechanisms is lower than that of the first material leveling and slag breaking mechanism.

[0010] Preferably, both the first material leveling and slag breaking mechanism and the second material leveling and slag breaking mechanism include a telescopic device and a pushing block. The telescopic end of the telescopic device is connected to the pushing block, and the pushing block moves towards or away from the axis of the furnace body.

[0011] Preferably, a plurality of oxygen inlets are annularly formed at the bottom of the inner side wall of the furnace body. The oxygen inlets are communicated with an oxygen supply system through an oxygen adding cavity, and the oxygen adding cavity is annularly arranged at the bottom of the outer side wall of the furnace body.

[0012] Preferably, the automatic igniter of the furnace body is arranged at the bottom of the inner side wall of the furnace body.

[0013] Preferably, the furnace body is provided with a plurality of adjustable oxygen inlet inspection holes. The plurality of adjustable oxygen inlet inspection holes are distributed around the axis of the furnace body, and valves are arranged at the adjustable oxygen inlet inspection holes.

[0014] Preferably, a slag discharging mechanism is arranged at the discharging port of the furnace body. The slag discharging mechanism includes a telescopic mechanism and a blocking block for blocking the discharging port. The telescopic mechanism is parallel to the end face of the discharging port, and the telescopic mechanism is connected to the blocking block.

[0015] Preferably, a high-temperature smoke outlet gate valve and a safety explosion-proof valve are arranged on the smoke outlet pipeline of the furnace body. A high-temperature thermocouple is arranged in the smoke outlet pipeline. The furnace wall of the furnace body includes a refractory layer, a heat insulation layer and a corrosion-resistant layer which are sequentially arranged from inside to outside.

[0016] The present invention mainly achieves the following technical effects compared with the prior art:

[0017] During the process that the compressed garbage enters the furnace body from the feeding channel, a part of the garbage will fall from both sides of the extended bottom plate, playing a role in garbage dispersion. Another part of the garbage will fall from the end of the bottom plate. Since the bottom plate is extended, the part of the garbage falling at the end of the bottom plate can be made closer to the middle of the furnace body, thus solving the unilateral problem. Moreover, the linear motion of the pressing rod squeezes the garbage, eliminating the problem of air suspension caused by the garbage caking and not falling during the high-temperature incineration process, that is, the design of the extended bottom plate and the top pressing mechanism can solve the unilateral problem and the air suspension problem, improve the uniformity of the garbage distribution in the furnace body, improve the incineration efficiency and the incineration effect, enable the garbage to be fully treated, is beneficial to increasing the garbage treatment capacity, and the discharged flue gas meets the standards.

[0018] The following technical effects are achieved by other solutions of the present invention compared with the prior art:

[0019] The material loosening mechanism can push the compacted garbage from the bottom, loosen the compacted garbage, and further improve the incineration efficiency and incineration effect.

[0020] The ejector rod air outlet, the oxygen inlet, and the adjustable oxygen inlet inspection hole can all supply oxygen to the furnace body, fully ensuring the sufficiency of combustion and reducing the amount of combustion coking of the garbage.

[0021] The first material leveling and slag breaking mechanism and the second material leveling and slag breaking mechanism can perform slag breaking on the coked garbage, avoid the problem of coking blocking the discharge port, and ensure the normal discharge of the furnace body.

[0022] The movement of the plugging block can be used to shear and crush the large furnace slag discharged from the discharge port, facilitating subsequent transportation. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic internal structure diagram of the domestic waste incinerator in the embodiment of the present invention;

[0025] Figure 2 It is a schematic structure diagram of the domestic waste incinerator in the embodiment of the present invention;

[0026] Figure 3 It is a front view of the domestic waste incinerator in the embodiment of the present invention;

[0027] Among them, 1. Furnace body; 2. Top pressing mechanism; 3. Feeding channel; 4. Pressing rod; 5. First driving component; 6. Material loosening mechanism; 7. Ejector rod; 8. Second driving component; 9. Conical piece; 10. First material leveling and slag breaking mechanism; 11. Second material leveling and slag breaking mechanism; 12. Expander; 13. Pushing block; 14. Guide channel; 15. Oxygen inlet; 16. Oxygen adding cavity; 17. Automatic igniter; 18. Adjustable oxygen inlet inspection hole; 19. Telescopic mechanism; 20. Plugging block; 21. Guide cylinder; 22. High-temperature smoke outlet gate valve; 23. Safety explosion-proof valve; 24. Maintenance furnace door; 25. High-temperature thermocouple. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] The object of the present invention is to provide a domestic waste incinerator to solve the problems existing in the prior art. By designing a feeding channel and a top pressing mechanism, the uniformity of waste distribution is improved, and the incineration efficiency, incineration effect and waste treatment capacity are enhanced.

[0030] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Please refer to as Figures 1 to 3 shown, a domestic waste incinerator is provided, which includes a furnace body 1 and a top pressing mechanism 2. An oxygen supply system and a smoke exhaust system are correspondingly arranged on the furnace body 1. The oxygen supply system is a blower and is equipped with an ignition device for ignition and combustion. The furnace wall of the furnace body 1 includes a refractory layer, a heat insulation layer and a corrosion-resistant layer arranged in sequence from the inside to the outside. A feeding channel 3 is arranged on the furnace body 1. The bottom plate of the feeding channel 3 extends into the inner cavity of the furnace body 1. The top pressing mechanism 2 includes a pressing rod 4 and a first driving component 5 that generates linear motion. The movement path of the pressing rod 4 is arranged corresponding to the material dropping area of the feeding channel 3. The pressing rod 4 can be arranged vertically or obliquely, aiming to be able to squeeze the waste in the material dropping area. Taking the cylindrical furnace body 1 as an example, the pressing rod 4 deviates from the top center of the furnace body 1 and is close to the feeding channel 3 to correspond to the material dropping area of the waste falling from the end of the bottom plate; during the process that the compressed waste enters the furnace body 1 from the feeding channel 3, since there are no baffles on both sides of the extended part of the bottom plate and there is no limiting effect on the waste, a part of the waste will fall from both sides of the extended bottom plate, playing a role in waste dispersion, and another part will fall from the end of the bottom plate. Since the bottom plate is extended, part of the waste falling at the end of the bottom plate can be close to the middle of the furnace body 1, thus solving the unilateral problem. Moreover, the linear motion of the pressing rod 4 squeezes the waste, eliminating the problem of air suspension caused by the waste caking and not falling to form a dome during the high-temperature incineration process. That is to say, the design of the extended bottom plate and the top pressing mechanism 2 can solve the unilateral problem and the air suspension problem, improve the uniformity of waste distribution in the furnace body 1, improve the incineration efficiency and incineration effect, enable the waste to be fully treated, is beneficial to improving the waste treatment capacity, and the discharged flue gas meets the standards.

[0032] One or more top pressing mechanisms 2 can be provided. Meanwhile, one or more pressing rods 4 can also be provided within one top pressing mechanism 2. When multiple pressing rods 4 are provided, the multiple pressing rods 4 are parallel to each other and are connected by a connecting portion. The first driving component 5 can be an electric push rod or a hydraulic push rod, or can also be a lead screw transmission mechanism. The electric push rod or the hydraulic push rod can directly drive the pressing rod 4 to perform linear motion. The nut seat threadedly connected to the lead screw of the lead screw transmission mechanism is connected to the pressing rod 4 or the connecting portion to drive the pressing rod 4 to perform linear motion. Herein, the connecting portion can serve as the nut seat threadedly connected to the lead screw.

[0033] A material loosening mechanism 6 is provided at the bottom of the furnace body 1. The material loosening mechanism 6 includes a top rod 7 and a second driving component 8 that generates linear motion. One end of the top rod 7 extends into the inner cavity of the furnace body 1. The top rod 7 is connected to the second driving component 8, and can push the compacted garbage from the bottom to loosen the compacted garbage, further improving the incineration efficiency and the incineration effect.

[0034] One or more material loosening mechanisms 6 can be provided. Meanwhile, one material loosening mechanism 6 can also include multiple top rods 7. When multiple top rods 7 are provided, the multiple top rods 7 are parallel to each other and are connected by a connecting portion. The second driving component 8 can be an electric push rod or a hydraulic push rod, or can also be a lead screw transmission mechanism. The electric push rod or the hydraulic push rod can directly drive the top rod 7 to perform linear motion. The nut seat threadedly connected to the lead screw of the lead screw transmission mechanism is connected to the top rod 7 or the connecting portion to drive the pressing rod 4 to perform linear motion. Herein, the connecting portion can serve as the nut seat threadedly connected to the lead screw.

[0035] In this embodiment, one top pressing mechanism 2 is provided. The top pressing mechanism 2 includes three pressing rods 4. The tops of the three pressing rods 4 are connected by a connecting portion. The connecting portion is threadedly connected to the lead screw driven by a driving motor. Four material loosening mechanisms 6 are provided at the bottom of the furnace body 1. Each material loosening mechanism 6 includes two top rods 7. The bottoms of the two top rods 7 are connected by a connecting portion. The connecting portion is connected to the hydraulic push rod provided at the bottom of the furnace body 1.

[0036] A plurality of conical pieces 9 can be circumferentially provided at the bottom of the pressing rod 4 and the top of the top rod 7 to expand the contact area between the pressing rod 4 and the top rod 7 and the garbage, and improve the extrusion and pushing effects.

[0037] The relative sliding portions between the pressing rod 4 and the furnace body 1 and between the top rod 7 and the furnace body 1 need to be sealed. For example, adding sealing rings can maintain the sealing effect while minimizing the influence on relative sliding.

[0038] The ejector rod 7 can be hollowly arranged. The part of the ejector rod 7 located inside the furnace body 1 is provided with air outlet holes, and the part of the ejector rod 7 located outside the furnace body 1 is provided with air inlet holes. The air inlet holes are connected to the oxygen supply system through a ball valve and a hose, so that while the ejector rod 7 plays a role in loosening the materials, oxygen can be supplied into the furnace body 1, fully ensuring the sufficiency of combustion and reducing the amount of combustion coking of the garbage.

[0039] Since some sundries may enter the ejector rod 7 through the air outlet holes, the hollow channel of the ejector rod 7 is arranged to penetrate downward through the bottom end of the ejector rod 7, and a plug cap is threadedly connected to the bottom end of the ejector rod 7 to block the hollow channel, and the sundries in the hollow channel can be discharged by unscrewing the plug cap.

[0040] The furnace body 1 is provided with at least one first material leveling and slag breaking mechanism 10 and a plurality of second material leveling and slag breaking mechanisms 11. The first material leveling and slag breaking mechanism 10 is located below the feeding channel 3, and the plurality of second material leveling and slag breaking mechanisms 11 are evenly arranged along the circumferential direction of the furnace body 1. The second material leveling and slag breaking mechanisms 11 are arranged corresponding to the slagging areas inside the furnace body 1. The horizontal height of the second material leveling and slag breaking mechanisms 11 is lower than the horizontal height of the first material leveling and slag breaking mechanism 10. The first material leveling and slag breaking mechanism 10 and the second material leveling and slag breaking mechanisms 11 can not only push the garbage in the furnace body 1 through expansion and contraction to further ensure the uniform dispersion of the garbage, but also perform slag breaking work on the coked garbage, avoiding the problem of coking blocking the discharge port and ensuring the normal discharge of the furnace body 1. The first material leveling and slag breaking mechanism 10 is at a higher position to adapt to the conical material pile formed by the falling and stacking of the garbage, and a higher first material leveling and slag breaking mechanism 10 is needed to push the materials at the tip of the material pile and the coking generated in this part.

[0041] In this embodiment, both the first material leveling and slag breaking mechanism 10 and the second material leveling and slag breaking mechanisms 11 include an expander 12 and a pushing block 13. The telescopic end of the expander 12 is connected to the pushing block 13, and the pushing block 13 moves towards or away from the axis of the furnace body 1; in other embodiments, a push rod can also be used to replace the expander 12, and a telescopic device is arranged at the end of the push rod, which can extend the distance between the telescopic device and the furnace body 1.

[0042] The expanders 12 of the first material leveling and slag breaking mechanism 10 and the second material leveling and slag breaking mechanisms 11 are electric expanders, pneumatic expanders or hydraulic expanders.

[0043] A guiding channel 14 can be arranged on the furnace body 1 to guide the movement of the pushing block 13.

[0044] A plurality of oxygen inlet ports 15 are annularly arranged at the bottom of the inner side wall of the furnace body 1. The oxygen inlet ports 15 are communicated with the oxygen supply system through an oxygen addition cavity 16. The oxygen addition cavity 16 is annularly arranged at the bottom of the outer side wall of the furnace body 1, which can realize uniform oxygen supply into the furnace body 1 and improve the incineration effect.

[0045] Based on the design of the oxygen inlet 15, the automatic igniter 17 of the furnace body 1 is arranged at the bottom of the inner side wall of the furnace body 1, which is convenient for ignition and combustion.

[0046] The furnace body 1 is provided with a plurality of adjustable oxygen inlet inspection holes 18, and the plurality of adjustable oxygen inlet inspection holes 18 are distributed around the axis of the furnace body 1. A valve is arranged at the adjustable oxygen inlet inspection hole 18. The valve can be a butterfly valve or a slide gate valve. When the valve is opened, the garbage accumulation situation inside the furnace body 1 can be viewed through the adjustable oxygen inlet inspection hole 18. Cooperating with the top pressing mechanism 2, the first material leveling and slag breaking mechanism 10 and the second material leveling and slag breaking mechanism 11 to complete the regulation of the garbage, and solve the problem of unilateral garbage under visible conditions; at the same time, during incineration, oxygen can be supplied into the furnace body 1 by opening the valve, further improving the incineration effect. Moreover, the adjustable oxygen inlet inspection hole is higher than the oxygen inlet 15, and oxygen can be supplied to a higher position, solving the problem of unilateral combustion at the upper part of the material pile formed by the garbage, and improving the combustion uniformity of the material pile.

[0047] A slag discharging mechanism is arranged at the discharging port of the furnace body 1. The slag discharging mechanism includes a telescopic mechanism 19 and a blocking block 20 for blocking the discharging port. The telescopic mechanism 19 is parallel to the end face of the discharging port, and the telescopic mechanism 19 is connected to the blocking block 20. The telescopic mechanism 19 can be an electric telescopic device, a pneumatic telescopic device or a hydraulic telescopic device. By using the movement of the blocking block 20, the large pieces of furnace slag discharged from the discharging port can be sheared and broken, which is convenient for subsequent transportation.

[0048] A corresponding guide cylinder 21 can be set to guide the movement of the blocking block 20.

[0049] A high-temperature smoke outlet gate valve 22 and a safety explosion-proof valve 23 are arranged on the smoke outlet pipeline of the furnace body 1. The high-temperature smoke outlet gate valve 22 is used to control the emission of flue gas, and the safety explosion-proof valve 23 is used for pressure relief during furnace startup and furnace shutdown. A high-temperature thermocouple 25 is arranged in the smoke outlet pipeline, and the high-temperature thermocouple 25 is used to detect the smoke outlet temperature. The combustion efficiency in the furnace can be monitored through the smoke outlet temperature.

[0050] In this embodiment, the first driving component 5, the second driving component 8, the telescopic device 12, the telescopic mechanism 19, the valve, the high-temperature smoke outlet gate valve 22, etc. can all be controlled by the control system, improving the degree of automation.

[0051] Maintenance furnace doors 24 are arranged on both the upper part and the lower part of the side wall of the furnace body 1 for the maintenance work of the furnace body 1.

[0052] During actual use, garbage enters the interior of the furnace body 1 from the feeding channel 3. The top pressing mechanism 2, the material loosening mechanism 6, the first material leveling and slag breaking mechanism 10, and the second material leveling and slag breaking mechanism 11 can be used to process the garbage to improve its uniformity of distribution. Then, oxygen is supplied into the furnace body 1 through the oxygen supply system, and it can be ignited and burned using the automatic igniter 17. After the burning is completed, the first material leveling and slag breaking mechanism 10 and the second material leveling and slag breaking mechanism 11 are used for slag breaking work, and the slag is discharged from the discharge port after slag breaking.

[0053] Adaptations made according to actual requirements are all within the protection scope of the present invention.

[0054] It should be noted that for those skilled in the art, obviously the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0055] Specific examples are used in the present invention to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A domestic waste incinerator, characterized in that: It includes a furnace body and a top pressing mechanism, wherein a feed channel is arranged on the furnace body, and the bottom plate of the feed channel extends into the inner cavity of the furnace body. The top pressing mechanism includes a pressing rod and a first driving component for generating linear motion, and the movement path of the pressing rod corresponds to the dropping area setting of the feed channel.

2. The domestic waste incinerator according to claim 1, characterized in that: The bottom of the furnace body is provided with a material loosening mechanism, which includes a push rod and a second driving component that generates linear motion. One end of the push rod extends into the inner cavity of the furnace body, and the push rod is connected to the second driving component.

3. The domestic waste incinerator according to claim 2, characterized in that: The push rod is hollow, a part of the push rod located inside the furnace body is provided with an air outlet, a part of the push rod located outside the furnace body is provided with an air inlet, and the air inlet is connected to the oxygen supply system.

4. The domestic waste incinerator according to claim 1, characterized in that: The furnace body is provided with at least one first material-scraping and slag-breaking mechanism and multiple second material-scraping and slag-breaking mechanisms, the first material-scraping and slag-breaking mechanism is located below the feed channel, and the multiple second material-scraping and slag-breaking mechanisms are evenly arranged along the circumference of the furnace body, the second material-scraping and slag-breaking mechanisms are arranged corresponding to the slag-forming areas in the furnace body, and the horizontal height of the second material-scraping and slag-breaking mechanisms is lower than the horizontal height of the first material-scraping and slag-breaking mechanisms.

5. The domestic waste incinerator according to claim 4, characterized in that: The first material-scraping and slag-breaking mechanism and the second material-scraping and slag-breaking mechanism both include a telescope and a push block. The telescopic end of the telescope is connected to the push block, and the push block moves toward or away from the axis of the furnace body.

6. The domestic waste incinerator according to claim 1, characterized in that: The bottom of the inner side wall of the furnace body is provided with a plurality of oxygen inlets in an annular shape. The oxygen inlets are connected with the oxygen supply system through an oxygenation chamber. The oxygenation chamber is arranged in an annular shape at the bottom of the outer side wall of the furnace body.

7. The domestic waste incinerator according to claim 6, characterized in that: The automatic igniter of the furnace body is arranged at the bottom of the inner side wall of the furnace body.

8. The domestic waste incinerator according to claim 1, characterized in that: The furnace body is provided with a plurality of adjustable oxygen inlet inspection holes, which are distributed around the axis of the furnace body, and valves are arranged at the adjustable oxygen inlet inspection holes.

9. The domestic waste incinerator according to claim 1, characterized in that: A slag discharge mechanism is provided at the discharge port of the furnace body, and the slag discharge mechanism comprises a telescopic mechanism and a blocking block for blocking the discharge port, the telescopic mechanism is parallel to the end face of the discharge port, and the telescopic mechanism is connected to the blocking block.

10. The domestic waste incinerator according to claim 1, characterized in that: The smoke outlet pipe of the furnace body is provided with a high-temperature smoke outlet valve and a safety explosion-proof valve, the smoke outlet pipe is provided with a high-temperature thermocouple, and the furnace wall of the furnace body includes a fire-resistant layer, a heat-insulating layer and a corrosion-resistant layer which are arranged in sequence from the inside to the outside.

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