Efficient reduction furnace for solid waste smelting treatment

Abstract

The invention relates to the technical field of reduction furnaces, in particular to an efficient reduction furnace for solid waste smelting treatment, which comprises a mounting base, a reduction furnace body is arranged on the mounting base, a solid waste conveying mechanism for feeding is arranged on the mounting base, and a high-temperature reduction mechanism for improving reducing atmosphere is arranged in the reduction furnace body. A waste gas purification mechanism is arranged at the exhaust end of the reduction furnace body, the high-temperature reduction mechanism comprises a material distribution circular rail detachably installed in the reduction furnace body, a plurality of horizontal pipelines are arranged on the outer side of the material distribution circular rail in the circumferential direction in an array mode, and the horizontal pipelines extend out of the outer side of the reduction furnace body. By arranging the high-temperature reduction mechanism and utilizing mutual cooperation between the material distributing circular rail and the material blowing circular pipe, pulverized coal can uniformly fall downwards in a circular ring shape, and compared with the mode that anthracite is directly added into a hearth in the prior art, the contact rate between the pulverized coal and solid waste can be effectively increased, so that the direct recovery rate of metal is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of reduction furnaces, and in particular to a high-efficiency reduction furnace for smelting and treating solid waste. Background Art

[0002] In order to recycle and reuse the residual metal substances in solid waste, people usually use a reduction furnace to conduct high-temperature smelting on solid waste during the solid waste treatment process. During the smelting process, fuel will burn in the reduction furnace to create a high-temperature environment for high-temperature heating of solid waste. Next, a reducing agent is introduced to chemically react with metal oxides, thereby reducing the metal from its compounds.

[0003] However, the reduction furnace in the prior art has a single function and a weak reducing atmosphere in the furnace chamber. When conducting high-temperature smelting on solid waste, in order to enhance the reducing atmosphere in the furnace chamber as much as possible and improve the metal yield, workers usually put anthracite into the furnace chamber. Although this can improve the reducing atmosphere in the furnace chamber to a certain extent, it cannot ensure sufficient contact between anthracite and solid waste, and the effect is not good. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a high-efficiency reduction furnace for smelting and treating solid waste, which solves the technical problems of the weak reducing atmosphere in the furnace chamber of the reduction furnace in the prior art and the low direct recovery rate of metal during the smelting process, and has the advantages of being able to increase the contact rate between pulverized coal and solid waste and effectively improving the direct recovery rate of metal.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: An efficient reduction furnace for smelting and treating solid waste, including an installation base, on which a reduction furnace body is provided. The installation base is provided with a solid waste feeding mechanism for feeding. Inside the reduction furnace body, there is a high-temperature reduction mechanism for improving the reducing atmosphere. Above the reduction furnace body, there is a pulverized coal adding mechanism. At the exhaust end of the reduction furnace body, there is an exhaust gas purification mechanism. After the solid waste enters the inside of the reduction furnace body under the action of the solid waste feeding mechanism, it will automatically undergo high-temperature smelting. During the smelting process, the high-temperature reduction mechanism and the pulverized coal adding mechanism will add reducing gas and pulverized coal into the inside of the reduction furnace body, thereby reducing the metal from the oxide. The high-temperature reduction mechanism includes a distributing circular rail detachably installed inside the reduction furnace body. Along the circumferential direction on the outer side of the distributing circular rail, a number of horizontal pipes are arranged in an array. The horizontal pipes extend out of the outer side of the reduction furnace body. Inside the distributing circular rail, there is a distributing cavity, which is connected to the horizontal pipes. One end of the horizontal pipe extending to the outer side of the reduction furnace body is fixedly installed with a blowing pipe. On the blowing pipe, there is a receiving funnel. On the side of the blowing pipe, there is a connecting air nozzle. The upper end of the reduction furnace body is communicated with an intake pipe. The lower end of the intake pipe is fixedly installed with an exhaust disc. Above the receiving funnel, there is a discharging vertical pipe. After the pulverized coal enters the inside of the receiving funnel through the discharging vertical pipe, it will quickly enter the inside of the horizontal pipe under the push of the air flow and evenly drop downward through the distributing circular rail.

[0006] Preferably, the exhaust disc is located above the distributing circular rail. A cleaning arc groove is opened at the upper end of the distributing circular rail. When the reducing gas is discharged downward through the intake pipe and the exhaust disc, a part of the reducing gas will enter the inside of the distributing cavity through the cleaning arc groove, thereby blowing and cleaning the distributing circular rail.

[0007] Preferably, the connecting air nozzle is communicated with a gas tank filled with reducing gas. The number of discharging vertical pipes matches the number of receiving funnels. The reducing gas flow inside the blowing pipe will always be in a fast-flowing state. After the pulverized coal drops through the discharging vertical pipe, it will enter the inside of the receiving funnel.

[0008] Preferably, the solid waste feeding mechanism includes an installation bracket fixedly installed on the installation base. On the installation bracket, a first feeding cylinder is movably installed. On the inner side wall of the reduction furnace body, a second feeding cylinder is movably installed. Between the first feeding cylinder and the second feeding cylinder, there is a conveyor belt. On the installation bracket, there is a feeding motor for driving the first feeding cylinder. Inside the reduction furnace body, there is a fuel filling assembly. At the upper end of the reduction furnace body, there is a temperature measuring assembly. When the first feeding cylinder rotates, it will automatically convey the solid waste into the inside of the reduction furnace body. Next, the solid waste will be subjected to high-temperature smelting inside the reduction furnace body.

[0009] Preferably, the fuel filling assembly includes a vertical spraying pipe coaxially arranged with the reduction furnace body. A number of spraying round holes are equidistantly arranged on the surface of the vertical spraying pipe. The lower end of the vertical spraying pipe is communicated with a fuel pipeline, and the fuel pipeline extends below the installation base. During smelting and processing, the fuel will enter the interior of the vertical spraying pipe through the fuel pipeline and be sprayed into the furnace through a plurality of spraying round holes.

[0010] Preferably, the pulverized coal adding mechanism includes an operation frame. A grinding round tank is fixedly installed on the operation frame. A coal adding funnel is arranged at the upper end of the grinding round tank. A rotating round shaft is movably installed inside the grinding round tank. A driving motor for driving the rotating round shaft is fixedly installed at the lower end of the grinding round tank. A scraping inclined plate and a grinding assembly are sequentially arranged on the outside of the rotating round shaft from bottom to top. A filter screen is detachably installed inside the grinding round tank, and the filter screen is located between the scraping inclined plate and the grinding assembly. When the rotating round shaft rotates, the grinding assembly will perform secondary grinding on the pulverized coal to make the pulverized coal finer and prevent blockage of the feeding funnel due to the existence of larger particles in the pulverized coal.

[0011] Preferably, the upper end of the discharge vertical pipe is communicated with the interior of the grinding round tank. The scraping inclined plate contacts the side wall of the bottom of the grinding round tank. During the process of the scraping inclined plate rotating with the rotating round shaft, the fine pulverized coal will enter the interior of the discharge vertical pipe.

[0012] Preferably, the grinding assembly is composed of two groups of staggered grinding protrusions. There is a blanking gap between the grinding protrusions and the inner wall of the grinding round tank. After the pulverized coal enters the interior of the grinding round tank, it will fall downward through the blanking gap.

[0013] Preferably, the waste gas purification mechanism includes an exhaust waste pipe fixedly installed at the upper end of the reduction furnace body. A clean gas cylinder is coaxially arranged on the exhaust waste pipe. An installation assembly is arranged inside the clean gas cylinder. An activated carbon block and a ceramic cooling plate are arranged on the installation assembly. When the suction assembly fixedly installed on the outside of the clean gas cylinder is energized and operates, the gas inside the reduction furnace body will be discharged outward through the exhaust waste pipe and the clean gas cylinder.

[0014] Preferably, the installation assembly includes an installation disc detachably installed inside the clean gas cylinder. A fixed round rod is coaxially and fixedly installed on the installation disc. The fixed round rod sequentially passes through the ceramic cooling plate and the activated carbon block. When the staff pulls out the installation disc outward, the activated carbon block and the ceramic cooling plate can be pulled out together, thus achieving the effect of convenient replacement.

[0015] By means of the above technical solutions, the present invention provides an efficient reduction furnace for smelting and treating solid waste, and at least has the following beneficial effects: 1. By setting up a high-temperature reduction mechanism and utilizing the mutual cooperation between the material distribution circular rail and the coal blowing circular pipe, the pulverized coal can uniformly fall downward in the form of a circular ring. Compared with the prior art method of directly adding anthracite into the furnace, the contact rate between the pulverized coal and the solid waste can be effectively increased, thereby improving the direct recovery rate of metals.

[0016] 2. By setting up a high-temperature reduction mechanism and utilizing the mutual cooperation between the material distribution circular rail and the fuel filling assembly, during the process of the pulverized coal falling downward in a circular ring, the liquid fuel will be evenly ejected from multiple fuel spraying round holes to fully contact the pulverized coal, so as to ensure that the pulverized coal can be ignited within a very short time after entering the furnace, which can effectively improve the efficiency of smelting and processing.

[0017] 3. By setting up a high-temperature reduction mechanism and utilizing the mutual cooperation between the exhaust disk and the material distribution circular rail, a part of the reducing gas discharged from the exhaust disk will enter the interior of the material distribution cavity through the cleaning arc groove, which can not only make the converged pulverized coal fall downward quickly, but also prevent the pulverized coal from adhering to the interior of the material distribution cavity and causing blockage.

[0018] 4. By setting up a pulverized coal adding mechanism and utilizing the mutual cooperation between the grinding assembly and the rotating circular shaft, the pulverized coal can be automatically ground during the process of automatically feeding the pulverized coal, which can not only prevent large particles from existing in the pulverized coal and causing blockage to the discharge vertical pipe and the horizontal pipe, but also ensure the uniformity of the contact between the pulverized coal and the solid waste.

[0019] 5. By setting up a pulverized coal adding mechanism and utilizing the mutual cooperation between the scraping inclined plate and the rotating circular shaft, the pulverized coal can be uniformly fed into the interiors of multiple discharge vertical pipes at one time, thereby ensuring that the qualities of multiple strands of pulverized coal are similar.

[0020] 6. By setting up a solid waste conveying mechanism and utilizing the mutual cooperation between the conveyor belt and the fuel filling assembly, the solid waste can be automatically fed, and the liquid fuel can be evenly sprayed into the interior of the reduction furnace body, which can effectively improve the uniformity of the distribution of the fuel among the solid wastes, thereby improving the efficiency of smelting and processing.

[0021] 7. By setting up an exhaust gas purification mechanism and utilizing the mutual cooperation between the ceramic cooling disk and the activated carbon block, the harmful components in the smelting exhaust gas can be adsorbed and removed, and the smelting exhaust gas can be cooled and its temperature can be reduced, which can greatly reduce the impact on the surrounding environment after the exhaust gas is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 is a three-dimensional view of the overall structure of the present invention Figure 1 ; Figure 2 is a three-dimensional view of the overall structure in the present invention Figure 2 ; Figure 3 is a schematic diagram of a partial structure in the present invention; Figure 4 is a schematic diagram of the structure of the solid waste feeding mechanism in the present invention; Figure 5 is a schematic diagram of the structure of the material distribution circular track in the present invention; Figure 6 is a schematic diagram of the structure of the cleaning arc groove in the present invention; Figure 7 is a schematic diagram of the structure of the exhaust disc in the present invention; Figure 8 is a schematic diagram of the structure of the pulverized coal adding mechanism in the present invention; Figure 9 is a schematic diagram of the structure of the scraping inclined plate in the present invention; Figure 10 is a schematic diagram of the structure of the waste gas purification mechanism in the present invention.

[0023] In the figure: 1, mounting base; 2, reduction furnace body; 3, solid waste feeding mechanism; 301, mounting bracket; 302, first feeding cylinder; 303, second feeding cylinder; 304, conveyor belt; 305, feeding motor; 306, fuel filling assembly; 307, temperature measuring assembly; 4, high-temperature reduction mechanism; 401, material distribution circular track; 402, horizontal pipeline; 403, material distribution cavity; 404, blowing round pipe; 405, receiving funnel; 406, connecting nozzle; 407, intake pipeline; 408, exhaust disc; 409, discharging vertical pipe; 410, cleaning arc groove; 5, pulverized coal adding mechanism; 501, operating frame; 502, grinding round tank; 503, coal adding funnel; 504, rotating round shaft; 505, driving motor; 506, scraping inclined plate; 507, grinding assembly; 508, filter screen; 6, waste gas purification mechanism; 601, waste discharging pipeline; 602, clean gas cylinder; 603, mounting assembly; 604, activated carbon block; 605, ceramic cooling disc; 606, suction assembly. Specific Embodiments

[0024] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0025] Embodiment 1 In the prior art, the reduction furnace has a single function and the reducing atmosphere in the furnace chamber is relatively weak. When high-temperature smelting of solid waste is carried out, in order to enhance the reducing atmosphere in the furnace chamber as much as possible and improve the metal yield, workers usually put anthracite into the furnace chamber. Although this can improve the reducing atmosphere in the furnace chamber to a certain extent, it cannot ensure sufficient contact between the anthracite and the solid waste, and the effect is not good. To solve this technical defect existing in the prior art, as Figures 1 - 10 shown, this embodiment proposes a high-efficiency reduction furnace for smelting treatment of solid waste, which can effectively improve the contact rate between pulverized coal and solid waste, thereby improving the direct recovery rate of metals. A reduction furnace body 2 is arranged on an installation base 1. A solid waste feeding mechanism 3 for feeding is arranged on the installation base 1. A high-temperature reduction mechanism 4 for enhancing the reducing atmosphere is arranged inside the reduction furnace body 2. A pulverized coal adding mechanism 5 is arranged above the reduction furnace body 2. An exhaust gas purification mechanism 6 is arranged at the exhaust end of the reduction furnace body 2. After the solid waste enters the inside of the reduction furnace body 2 under the action of the solid waste feeding mechanism 3, high-temperature smelting will be automatically carried out. During the smelting process, the high-temperature reduction mechanism 4 and the pulverized coal adding mechanism 5 will add reducing gas and pulverized coal into the inside of the reduction furnace body 2, so as to reduce the metal from the oxide.

[0026] In order to improve the uniformity of pulverized coal addition as much as possible and ensure the metal yield, a high-temperature reduction mechanism 4 is provided in this embodiment. Specifically, the high-temperature reduction mechanism 4 includes a material distribution circular rail 401 detachably installed inside the reduction furnace body 2. A number of horizontal pipes 402 are arranged in an array along the circumferential direction on the outer side of the material distribution circular rail 401. The horizontal pipes 402 extend out of the outer side of the reduction furnace body 2. A material distribution cavity 403 is formed inside the material distribution circular rail 401. The material distribution cavity 403 is connected to the horizontal pipes 402. One end of the horizontal pipe 402 extending to the outer side of the reduction furnace body 2 is fixedly installed with a blowing pipe 404. A receiving funnel 405 is arranged on the blowing pipe 404. A connecting air nozzle 406 is arranged on the side of the blowing pipe 404. The upper end of the reduction furnace body 2 is communicated with an intake pipe 407. The lower end of the intake pipe 407 is fixedly installed with an exhaust disc 408. The exhaust disc 408 is located above the material distribution circular rail 401. A cleaning arc groove 410 is formed at the upper end of the material distribution circular rail 401. When the reducing gas is discharged downward through the intake pipe 407 and the exhaust disc 408, a part of the reducing gas will enter the interior of the material distribution cavity 403 through the cleaning arc groove 410, so as to blow and clean the material distribution circular rail 401. A discharge vertical pipe 409 is arranged above the receiving funnel 405. After the pulverized coal enters the interior of the receiving funnel 405 through the discharge vertical pipe 409, it will quickly enter the interior of the horizontal pipe 402 under the push of the air flow and uniformly fall downward through the material distribution circular rail 401. The connecting air nozzle 406 is communicated with a gas tank filled with reducing gas. The number of the discharge vertical pipes 409 matches the number of the receiving funnels 405. The reducing gas flow inside the blowing pipe 404 will always be in a fast-flowing state. After the pulverized coal falls through the discharge vertical pipe 409, it will enter the interior of the receiving funnel 405.

[0027] According to the above content, during the high-temperature smelting process, a part of the reducing gas (about 75% of all the reducing gas) will enter the reduction furnace body 2 through the intake pipe 407, and another part of the reducing gas (about 25% of all the reducing gas) will enter the blowing pipe 404 through the connecting air nozzle 406, and then enter the reduction furnace body 2 through the horizontal pipe 402.

[0028] Meanwhile, the pulverized coal processed by the pulverized coal addition mechanism 5 will fall into the interior of the receiving funnel 405 through the discharge vertical pipe 409. Subsequently, the pulverized coal inside the receiving funnel 405 will enter the interior of the blowing pipe 404 and quickly enter the interior of the horizontal pipe 402 under the blowing of the reducing gas flow.

[0029] Subsequently, as Figure 5As shown, pulverized coal enters the interior of the material distribution cavity 403 horizontally through the horizontal pipeline 402. After multiple strands of pulverized coal converge inside the material distribution cavity 403, they will fall downward in a circular ring shape, which can effectively improve the uniformity of contact between the pulverized coal and the solid waste. Moreover, during the process of the pulverized coal falling downward in a circular ring shape, the liquid fuel ejected from multiple spraying holes will come into full contact with the pulverized coal, so that the pulverized coal can be quickly ignited after entering the furnace.

[0030] Moreover, as Figure 7 and Figure 8 shown, the reducing gas entering the furnace through the air inlet pipeline 407 will be ejected downward through multiple exhaust holes on the exhaust disk 408. Next, a part of the gas will enter the interior of the material distribution cavity 403 through the cleaning arc groove 410, which can not only make the converged pulverized coal fall downward quickly, but also prevent the pulverized coal from adhering to the interior of the material distribution cavity 403 and causing blockage.

[0031] In this embodiment, by setting the high-temperature reduction mechanism 4 and using the mutual cooperation between the material distribution circular rail 401 and the blowing pipe 404, the pulverized coal can fall downward evenly in a circular ring shape. Compared with the prior art method of directly adding anthracite into the furnace, it can effectively increase the contact rate between the pulverized coal and the solid waste, thereby improving the direct recovery rate of metals. Moreover, in this embodiment, by setting the high-temperature reduction mechanism 4 and using the mutual cooperation between the material distribution circular rail 401 and the fuel filling component 306, during the process of the pulverized coal falling downward in a circular ring shape, the liquid fuel will be evenly ejected from multiple spraying holes and come into full contact with the pulverized coal, so as to ensure that the pulverized coal can be ignited within a very short time after entering the furnace, which can effectively improve the efficiency of smelting and processing. In addition, in this embodiment, by setting the high-temperature reduction mechanism 4 and using the mutual cooperation between the exhaust disk 408 and the material distribution circular rail 401, a part of the reducing gas discharged from the exhaust disk 408 will enter the interior of the material distribution cavity 403 through the cleaning arc groove 410, which can not only make the converged pulverized coal fall downward quickly, but also prevent the pulverized coal from adhering to the interior of the material distribution cavity 403 and causing blockage.

[0032] Embodiment 2 In order to prevent the existence of large particles inside the pulverized coal from blocking the discharge vertical pipe 409 and the horizontal pipeline 402, on the basis of Embodiment 1, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 8 and Figure 9As shown, the present embodiment is provided with a pulverized coal adding mechanism 5. Specifically, the pulverized coal adding mechanism 5 comprises an operating frame 501, on which a grinding round tank 502 is fixedly mounted, the upper end of a discharge vertical pipe 409 is connected to the interior of the grinding round tank 502, a scraper inclined plate 506 is in contact with the side wall of the bottom of the grinding round tank 502, and the scraper inclined plate 506 rotates with the rotating circular shaft 504, so that the finely crushed pulverized coal enters the interior of the discharge vertical pipe 409, a coal adding funnel 503 is arranged at the upper end of the grinding round tank 502, a rotating circular shaft 504 is movably mounted inside the grinding round tank 502, and a driving motor 503 for driving the rotating circular shaft 504 is fixedly mounted at the lower end of the grinding round tank 502. 5. The outside of the rotating circular shaft 504 is provided with a scraper inclined plate 506 and a grinding assembly 507 in order from bottom to top. The grinding assembly 507 is composed of two groups of grinding protrusions arranged in an alternating manner. A material drop gap is provided between the grinding protrusions and the inner wall of the grinding circular tank 502. After the pulverized coal enters the interior of the grinding circular tank 502, it will fall downward through the material drop gap. A filter screen 508 is detachably installed inside the grinding circular tank 502. The filter screen 508 is located between the scraper inclined plate 506 and the grinding assembly 507. When the rotating circular shaft 504 rotates, the grinding assembly 507 will perform secondary grinding on the pulverized coal to make the pulverized coal more finely broken, thereby preventing the presence of larger particles in the pulverized coal from clogging the docking funnel 405.

[0033] According to the above content, during the high-temperature smelting process, the staff will pour the pulverized coal into the coal feeding funnel 503. Next, the pulverized coal will fall down along the gap between the materials. At the same time, the rotating circular shaft 504 will rotate at a constant rate under the action of the driving motor 505. When the rotating circular shaft 504 rotates, the scraper inclined plate 506 and the grinding protrusion will rotate synchronously.

[0034] When the grinding block rotates, the pulverized coal in the gap is ground twice, thereby preventing the presence of larger particles in the pulverized coal from clogging the discharge vertical pipe 409. Next, the ground pulverized coal will fall to the bottom of the grinding round tank 502 through the filter screen 508.

[0035] At the same time, the scraper inclined plate 506 will continuously push the pulverized coal at the bottom of the grinding round tank 502 into the interior of the discharge vertical pipe 409 , thereby evenly discharging the pulverized coal into multiple receiving funnels 405 .

[0036] In this embodiment, by setting up the pulverized coal adding mechanism 5 and utilizing the mutual cooperation between the grinding component 507 and the rotating shaft 504, it is possible to automatically grind the pulverized coal during the process of automatically feeding the pulverized coal, which not only avoids blockage of the discharge vertical pipe 409 and the horizontal pipe 402 caused by large particles inside the pulverized coal, but also ensures the uniformity of contact between the pulverized coal and the solid waste. Moreover, in this embodiment, by setting up the pulverized coal adding mechanism 5 and utilizing the mutual cooperation between the scraping inclined plate 506 and the rotating shaft 504, it is possible to uniformly feed the pulverized coal into the interiors of multiple discharge vertical pipes 409 at one time, thereby ensuring the similarity of the quality of multiple pulverized coal streams.

[0037] Embodiment III In order to improve the efficiency of solid waste smelting and processing as much as possible and reduce the workload of the staff, as Figures 1 - 4 shown, on the basis of the above embodiment, this embodiment sets up a solid waste feeding mechanism 3. Specifically, the solid waste feeding mechanism 3 includes a mounting bracket 301 fixedly installed on the mounting base 1. A first feeding cylinder 302 is movably installed on the mounting bracket 301. A second feeding cylinder 303 is movably installed on the inner side wall of the reduction furnace body 2. A conveyor belt 304 is arranged between the first feeding cylinder 302 and the second feeding cylinder 303. A feeding motor 305 for driving the first feeding cylinder 302 is provided on the mounting bracket 301. A fuel filling component 306 is arranged inside the reduction furnace body 2. The fuel filling component 306 includes a spraying vertical pipe coaxially arranged with the reduction furnace body 2. A number of spraying round holes are equally spaced on the surface of the spraying vertical pipe. The lower end of the spraying vertical pipe is communicated with a fuel pipe. The fuel pipe extends below the mounting base 1. During smelting and processing, the fuel will enter the interior of the spraying vertical pipe through the fuel pipe and be sprayed into the furnace chamber through a plurality of spraying round holes. A temperature measuring component 307 is provided at the upper end of the reduction furnace body 2. When the first feeding cylinder 302 rotates, it will automatically convey the solid waste into the interior of the reduction furnace body 2. Next, the solid waste will be smelted at high temperature inside the reduction furnace body 2.

[0038] According to the above content, during solid waste smelting and processing, the first feeding cylinder 302 will rotate at a constant rate under the action of the feeding motor 305. When the first feeding cylinder 302 rotates, it will cause the solid waste to enter the interior of the reduction furnace body 2 under the action of the conveyor belt 304, thereby automatically feeding the solid waste.

[0039] Moreover, a closing baffle is slidably connected inside the side wall of the reduction furnace body 2. During the feeding process, the closing baffle will move upward into the side wall. After the feeding is completed, the closing baffle will automatically move downward to block the feeding port.

[0040] Next, the liquid fuel in the fuel pipeline will first enter the interior of the material spraying vertical pipe and then be evenly sprayed into the furnace through multiple material spraying round holes, thereby performing high-temperature smelting on the solid waste in the furnace and causing the metals in the waste to exist in the form of oxides.

[0041] In this embodiment, by setting up the solid waste feeding mechanism 3 and utilizing the mutual cooperation between the conveyor belt 304 and the fuel filling component 306, it can not only automatically feed the solid waste but also evenly spray the liquid fuel into the interior of the reduction furnace body 2, effectively improving the evenness of the fuel distribution among the solid waste, thereby enhancing the smelting and processing efficiency.

[0042] Embodiment 4 To prevent the exhaust gas generated during the smelting process from being directly discharged and polluting the surrounding environment, as Figure 4 and Figure 10 shown, based on the above embodiment, this embodiment sets up an exhaust gas purification mechanism 6. Specifically, the exhaust gas purification mechanism 6 includes a waste discharge pipe 601 fixedly installed at the upper end of the reduction furnace body 2. A clean gas cylinder 602 is coaxially arranged on the waste discharge pipe 601. An installation component 603 is arranged inside the clean gas cylinder 602. The installation component 603 includes an installation disc detachably installed inside the clean gas cylinder 602. A fixed round rod is coaxially and fixedly installed on the installation disc. The fixed round rod sequentially passes through the ceramic cooling disc 605 and the activated carbon block 604. When the staff pulls the installation disc outwards, the activated carbon block 604 and the ceramic cooling disc 605 can be pulled out together, thus achieving the effect of being convenient for replacement. The installation component 603 is provided with the activated carbon block 604 and the ceramic cooling disc 605. A suction component 606 is fixedly installed on the outer side of the clean gas cylinder 602. When the suction component 606 operates electrified, the gas in the reduction furnace body 2 will be discharged outwards through the waste discharge pipe 601 and the clean gas cylinder 602.

[0043] According to the above content, after the high-temperature smelting is completed, the suction component 606 will automatically extract the exhaust gas inside the reduction furnace body 2 through the waste discharge pipe 601, causing the exhaust gas to enter the interior of the clean gas cylinder 602 through the waste discharge pipe 601.

[0044] Next, the activated carbon block 604 will adsorb and remove harmful components such as sulfur dioxide and carbon dioxide in the exhaust gas. Moreover, the ceramic cooling disc 605 can dissipate heat and cool the exhaust gas at a relatively high temperature, thereby preventing the exhaust gas from affecting the surrounding environment after being discharged.

[0045] In this embodiment, by setting up the exhaust gas purification mechanism 6 and utilizing the mutual cooperation between the ceramic cooling disc 605 and the activated carbon block 604, it can not only adsorb and remove the harmful components in the smelting exhaust gas but also dissipate heat and reduce the temperature of the smelting exhaust gas, which can greatly reduce the impact on the surrounding environment after the exhaust gas is discharged.

[0046] The control method of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of power also belongs to the common general knowledge in the art. And the present invention is mainly used to protect mechanical devices, so the control method and circuit connection of the present invention will not be explained in detail herein.

[0047] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency reduction furnace for solid waste smelting treatment, comprising a mounting base (1), on which a reduction furnace body (2) is arranged, characterized in that: The mounting base (1) is provided with a solid waste feeding mechanism (3) for feeding, a high-temperature reduction mechanism (4) for improving the reducing atmosphere is provided inside the reduction furnace body (2), a pulverized coal adding mechanism (5) is provided above the reduction furnace body (2), and an exhaust gas purification mechanism (6) is provided at the exhaust end of the reduction furnace body (2); The high-temperature reduction mechanism (4) comprises a material distribution circular rail (401) which is detachably mounted inside the reduction furnace body (2); a plurality of horizontal pipes (402) are arranged in an array along a circumferential direction on the outer side of the material distribution circular rail (401); the horizontal pipes (402) extend out of the outer side of the reduction furnace body (2); a material distribution cavity (403) is provided inside the material distribution circular rail (401); the material distribution cavity (403) is connected to the horizontal pipe (402); and the horizontal pipe (402) A blowing circular tube (404) is fixedly installed at one end extending to the outside of the reduction furnace body (2), a material receiving funnel (405) is arranged on the blowing circular tube (404), a connecting air nozzle (406) is arranged on the side of the blowing circular tube (404), an upper end of the reduction furnace body (2) is connected to an air intake pipe (407), an exhaust disc (408) is fixedly installed at the lower end of the air intake pipe (407), and a discharge vertical pipe (409) is arranged above the material receiving funnel (405).

2. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The exhaust disc (408) is located above the material distribution circular track (401), and a cleaning arc groove (410) is provided at the upper end of the material distribution circular track (401).

3. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The connecting gas nozzle (406) is connected to a gas tank containing reducing gas, and the number of the discharge vertical pipes (409) matches the number of the receiving funnels (405).

4. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The solid waste feeding mechanism (3) comprises a mounting bracket (301) fixedly mounted on a mounting base (1); a first feeding cylinder (302) is movably mounted on the mounting bracket (301); a second feeding cylinder (303) is movably mounted on the inner side wall of the reduction furnace body (2); and a conveyor belt (304) is arranged between the first feeding cylinder (302) and the second feeding cylinder (303). A feeding motor (305) for driving the first feeding cylinder (302) is arranged on the mounting bracket (301); a fuel filling assembly (306) is arranged inside the reduction furnace body (2); and a temperature measuring assembly (307) is arranged at the upper end of the reduction furnace body (2).

5. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 4, characterized in that: The fuel filling assembly (306) comprises a material injection vertical pipe coaxially arranged with the reduction furnace body (2), a plurality of material injection circular holes being provided at equal intervals on the surface of the material injection vertical pipe, and a fuel pipeline being connected to the lower end of the material injection vertical pipe, and the fuel pipeline extending to the bottom of the mounting base (1).

6. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The pulverized coal adding mechanism (5) comprises an operating frame (501), on which a grinding round tank (502) is fixedly mounted, a coal adding funnel (503) is arranged at the upper end of the grinding round tank (502), a rotating round shaft (504) is movably mounted inside the grinding round tank (502), a driving motor (505) for driving the rotating round shaft (504) is fixedly mounted at the lower end of the grinding round tank (502), a scraping inclined plate (506) and a grinding assembly (507) are arranged in sequence from bottom to top outside the rotating round shaft (504), a filtering screen (508) is detachably mounted inside the grinding round tank (502), and the filtering screen (508) is located between the scraping inclined plate (506) and the grinding assembly (507).

7. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 6, characterized in that: The upper end of the discharge vertical pipe (409) is connected to the interior of the grinding round tank (502), and the scraper inclined plate (506) is in contact with the side wall of the bottom of the grinding round tank (502).

8. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 6, characterized in that: The grinding assembly (507) is composed of two groups of grinding protrusions arranged in an alternating manner, and a material drop gap is provided between the grinding protrusions and the inner wall of the grinding round can (502).

9. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The waste gas purification mechanism (6) comprises a waste gas discharge pipe (601) fixedly mounted on the upper end of the reduction furnace body (2); a clean gas cylinder (602) is coaxially arranged on the waste gas discharge pipe (601); a mounting assembly (603) is arranged inside the clean gas cylinder (602); an activated carbon block (604) and a ceramic cooling plate (605) are arranged on the mounting assembly (603); and a suction assembly (606) is fixedly mounted on the outer side of the clean gas cylinder (602).

10. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 9, characterized in that: The mounting assembly (603) comprises a mounting disc that is detachably mounted inside the clean air cylinder (602), a fixed round rod being coaxially fixedly mounted on the mounting disc, and the fixed round rod sequentially passes through the ceramic cooling disc (605) and the activated carbon block (604).

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