A high-efficiency reduction furnace for solid waste smelting and treatment

Abstract

The present invention relates to the technical field of reduction furnaces, and in particular to a high-efficiency reduction furnace for solid waste smelting and treatment, comprising a mounting base, a reduction furnace body being provided on the mounting base, a solid waste feeding mechanism for feeding materials being provided on the mounting base, a high-temperature reduction mechanism for improving the reducing atmosphere being provided inside the reduction furnace body, an exhaust end of the reduction furnace body being provided with an exhaust gas purification mechanism, and the high-temperature reduction mechanism comprising a material dividing circular rail detachably mounted inside the reduction furnace body, a plurality of horizontal pipes being arranged in an array along the circumferential direction on the outer side of the material dividing circular rail, and the horizontal pipes extending outward from the outer side of the reduction furnace body. The present invention, by providing a high-temperature reduction mechanism and utilizing the mutual cooperation between the material dividing circular rail and the blowing circular pipe, can cause pulverized coal to fall downward uniformly in the form of a circular ring. Compared with the method of directly adding anthracite into the furnace in the prior art, the contact rate between pulverized coal and solid waste can be effectively increased, thereby increasing the direct recovery rate of metal.

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 metal substances remaining in solid waste, people usually use reduction furnaces to smelt the solid waste at high temperature during the solid waste treatment process. During the smelting process, the fuel will burn in the reduction furnace to create a high-temperature environment to heat the solid waste at high temperature. Next, the reducing agent is introduced to react chemically with the metal oxide, thereby reducing the metal from its compound.

[0003] However, the reduction furnace in the existing technology has a single function and the reducing atmosphere in the furnace is weak. When high-temperature smelting of solid waste, in order to maximize the reducing atmosphere in the furnace and increase the metal yield, workers usually put anthracite into the furnace. Although this can improve the reducing atmosphere in the furnace to a certain extent, it cannot ensure that the anthracite and solid waste can fully contact each other, and the effect is not good. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a high-efficiency reduction furnace for solid waste smelting and treatment, which solves the technical problems of weak reducing atmosphere in the furnace of the reduction furnace in the existing technology and low metal direct recovery rate during the smelting process. It has the advantage of being able to increase the contact rate between pulverized coal and solid waste, and can effectively improve the metal direct recovery rate.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-efficiency reduction furnace for solid waste smelting and treatment, comprising a mounting base, a reduction furnace body is arranged on the mounting base, a solid waste feeding mechanism for feeding is provided on the mounting base, a high-temperature reduction mechanism for improving the reducing atmosphere is provided inside the reduction furnace body, a pulverized coal adding mechanism is provided above the reduction furnace body, and an exhaust gas purification mechanism is provided at the exhaust end of the reduction furnace body. After the solid waste enters the interior 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 to the interior of the reduction furnace body, thereby reducing the metal from the oxide. The high-temperature reduction mechanism It includes a distribution circular rail that can be detachably installed inside the reduction furnace body. Several horizontal pipes are arranged in an array along the circumferential direction on the outside of the distribution circular rail. The horizontal pipes extend out of the outside of the reduction furnace body. A distribution cavity is opened inside the distribution circular rail. The distribution cavity is connected to the horizontal pipe. One end of the horizontal pipe extends to the outside of the reduction furnace body and is fixedly installed with a blowing circular pipe. A receiving funnel is provided on the blowing circular pipe. A connecting air nozzle is provided on the side of the blowing circular pipe. The upper end of the reduction furnace body is connected to the air intake pipe, and an exhaust disc is fixedly installed at the lower end of the air intake pipe. A discharge vertical pipe is provided above the receiving funnel. After the pulverized coal enters the interior of the receiving funnel through the discharge vertical pipe, it will quickly enter the interior of the horizontal pipe under the push of the airflow and fall downward evenly through the distribution circular rail.

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

[0007] Preferably, the connecting gas nozzle is connected to a gas tank filled with reducing gas, the number of discharge vertical pipes matches the number of receiving funnels, the reducing airflow inside the blowing tube will always be in a fast flow state, and the pulverized coal will enter the interior of the receiving funnel after falling through the discharge vertical pipe.

[0008] Preferably, the solid waste feeding mechanism includes a mounting bracket fixedly mounted on a mounting base, a first feeding barrel movably mounted on the mounting bracket, a second feeding barrel movably mounted on the inner wall of the reduction furnace body, and a conveyor belt is arranged between the first feeding barrel and the second feeding barrel. A feeding motor for driving the first feeding barrel is provided on the mounting bracket, a fuel filling assembly is provided inside the reduction furnace body, and a temperature measuring assembly is provided at the upper end of the reduction furnace body. When the first feeding barrel rotates, the solid waste will be automatically transported to the interior of the reduction furnace body. Next, the solid waste will be smelted at high temperature inside the reduction furnace body.

[0009] Preferably, the fuel filling assembly includes a vertical injection pipe coaxially arranged with the reduction furnace body, and a plurality of circular injection holes are provided at equal intervals on the surface of the vertical injection pipe. The lower end of the vertical injection pipe is connected to a fuel pipe, and the fuel pipe extends to the bottom of the mounting base. During smelting processing, the fuel will enter the interior of the vertical injection pipe through the fuel pipe and be sprayed into the furnace through multiple circular injection holes.

[0010] Preferably, the pulverized coal adding mechanism includes an operating frame, on which a grinding round tank is fixedly mounted, a coal adding funnel is provided at the upper end of the grinding round tank, a rotating circular shaft is movably mounted inside the grinding round tank, a driving motor for driving the rotating circular shaft is fixedly mounted at the lower end of the grinding round tank, a scraping ramp and a grinding assembly are sequentially arranged on the outside of the rotating circular shaft from bottom to top, a filter screen is detachably mounted on the inside of the grinding round tank, the filter screen is located between the scraping ramp and the grinding assembly, and when the rotating circular shaft rotates, the grinding assembly will perform secondary grinding on the pulverized coal to make the pulverized coal finer, thereby preventing the presence of larger particles in the pulverized coal from clogging the connecting material funnel.

[0011] Preferably, the upper end of the discharge vertical pipe is connected to the interior of the grinding round tank, and the scraper inclined plate contacts the side wall of the bottom of the grinding round tank. When the scraper inclined plate rotates following the rotating circular axis, the finely crushed 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, and a drop gap is provided 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 drop gap.

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

[0014] Preferably, the mounting assembly includes a mounting disc that is detachably mounted inside the air purification cylinder, and a fixed round rod is coaxially fixed on the mounting disc, which passes through the ceramic cooling disc and the activated carbon block in sequence. When the staff pulls the mounting disc outward, the activated carbon block and the ceramic cooling disc can be pulled out together, thereby achieving the effect of easy replacement.

[0015] By means of the above technical solution, the present invention provides a high-efficiency reduction furnace for solid waste smelting treatment, which has at least the following beneficial effects:

[0016] 1. The present invention sets a high-temperature reduction mechanism and utilizes the mutual cooperation between the material distribution circular rail and the blowing circular tube to make the pulverized coal fall downward evenly in the form of a circular ring. Compared with the method of directly adding anthracite into the furnace in the prior art, it can effectively improve the contact rate between the pulverized coal and the solid waste, thereby improving the direct recovery rate of metal.

[0017] 2. The present invention sets up a high-temperature reduction mechanism and utilizes the mutual cooperation between the material distribution circular rail and the fuel filling assembly. As the pulverized coal falls downward in a circular shape, the liquid fuel will be evenly sprayed out from multiple circular injection holes and fully contact the pulverized coal, thereby ensuring that the pulverized coal can be ignited in a very short time after entering the furnace, which can effectively improve the efficiency of smelting processing.

[0018] 3. The present invention sets up a high-temperature reduction mechanism and utilizes the mutual cooperation between the exhaust disc and the material distribution circular rail. Part of the reducing gas discharged from the exhaust disc will enter the interior of the material distribution cavity through the cleaning arc groove, which can not only make the merged pulverized coal fall downward quickly, but also prevent the pulverized coal from adhering to the interior of the material distribution cavity and causing blockage.

[0019] 4. The present invention provides a pulverized coal adding mechanism and utilizes the mutual cooperation between the grinding assembly and the rotating circular shaft to automatically grind the pulverized coal during the process of automatically adding the pulverized coal, thereby avoiding the blockage of the discharge vertical pipe and horizontal pipe caused by the presence of large particles inside the pulverized coal and ensuring the uniformity of the contact between the pulverized coal and the solid waste.

[0020] 5. The present invention provides a pulverized coal adding mechanism and utilizes the cooperation between the scraper ramp and the rotating shaft to evenly feed pulverized coal into multiple discharge vertical pipes at one time, thereby ensuring that the quality of multiple streams of pulverized coal is similar.

[0021] 6. The present invention provides a solid waste feeding mechanism and utilizes the cooperation between the conveyor belt and the fuel filling assembly to automatically feed the solid waste and evenly spray the liquid fuel into the interior of the reduction furnace body, which can effectively improve the uniformity of the fuel distribution among the solid waste, thereby improving the efficiency of the smelting process.

[0022] 7. The present invention sets up an exhaust gas purification mechanism and utilizes the interaction between the ceramic cooling plate and the activated carbon block to not only adsorb and remove harmful components in the smelting exhaust gas, but also dissipate heat and cool the smelting exhaust gas, which can greatly reduce the impact of the exhaust gas on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 The three-dimensional structure of the overall structure of the present invention Figure 1 ;

[0025] Figure 2 The three-dimensional structure of the overall structure of the present invention Figure 2 ;

[0026] Figure 3 It is a schematic diagram of some structures in the present invention;

[0027] Figure 4 Schematic diagram of the structure of the solid waste feeding mechanism of the present invention;

[0028] Figure 5 This is a schematic structural diagram of the material dividing circular rail in the present invention;

[0029] Figure 6 This is a schematic structural diagram of the arc trough cleaning method of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the exhaust disc in the present invention;

[0031] Figure 8 This is a schematic structural diagram of the pulverized coal adding mechanism of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the scraper inclined plate in the present invention;

[0033] Figure 10 It is a structural schematic diagram of the exhaust gas purification mechanism in the present invention.

[0034] 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 rail; 402. Horizontal pipe; 403. Material distribution cavity; 404. Material blowing circular pipe; 405. Material receiving funnel; 406. Connecting nozzle; 407. Air inlet pipe; 408 , exhaust disc; 409, discharge vertical pipe; 410, cleaning arc trough; 5, pulverized coal adding mechanism; 501, operating frame; 502, grinding round tank; 503, coal adding funnel; 504, rotating circular shaft; 505, driving motor; 506, scraper inclined plate; 507, grinding assembly; 508, filter screen; 6, exhaust gas purification mechanism; 601, exhaust pipe; 602, clean air cylinder; 603, installation assembly; 604, activated carbon block; 605, ceramic cooling plate; 606, suction assembly. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] The reduction furnace in the existing technology has a single function and a weak reducing atmosphere in the furnace. When smelting solid waste at high temperature, in order to enhance the reducing atmosphere in the furnace as much as possible and improve the metal yield, workers usually put anthracite into the furnace. Although this can improve the reducing atmosphere in the furnace to a certain extent, it cannot ensure that the anthracite and solid waste can fully contact each other, and the effect is not good. In order to solve this technical defect in the existing technology, such as Figures 1-10 As shown, this embodiment proposes a high-efficiency reduction furnace for solid waste smelting and treatment, which can effectively improve the contact rate between pulverized coal and solid waste, thereby improving the direct recovery rate of metal. A reduction furnace body 2 is provided on the reduction furnace mounting base 1, and a solid waste feeding mechanism 3 for feeding is provided on the mounting base 1. 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. After the solid waste enters the interior of the reduction furnace body 2 under the action of the solid waste feeding mechanism 3, it will automatically undergo high-temperature smelting. During the smelting process, the high-temperature reduction mechanism 4 and the pulverized coal adding mechanism 5 will add reducing gas and pulverized coal to the interior of the reduction furnace body 2, thereby reducing the metal from the oxide.

[0038] 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 distribution circular rail 401 that is 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 outside of the distribution circular rail 401. The horizontal pipe 402 extends out of the outside of the reduction furnace body 2. A distribution cavity 403 is provided inside the distribution circular rail 401. The distribution cavity 403 is connected to the horizontal pipe 402. A blowing circular pipe 404 is fixedly installed at one end of the horizontal pipe 402 extending to the outside of the reduction furnace body 2. A material receiving funnel 405 is provided on the blowing circular pipe 404. A connecting air nozzle 406 is provided on the side of the blowing circular pipe 404. The 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. The exhaust disc 408 is located at the distribution circular rail 401. Above the circular rail 401, a cleaning arc groove 410 is provided at the upper end of the distribution circular rail 401. When the reducing gas is discharged downward through the air inlet pipe 407 and the exhaust disc 408, a part of the reducing gas will enter the interior of the distribution cavity 403 through the cleaning arc groove 410, thereby blowing and cleaning the distribution circular rail 401. A discharge vertical pipe 409 is provided 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 airflow, and fall downward evenly through the distribution circular rail 401. The connecting gas nozzle 406 is connected to the gas tank filled with reducing gas. The number of discharge vertical pipes 409 matches the number of receiving funnels 405. The reducing airflow inside the blowing circular pipe 404 will always be in a fast-flowing state. After falling through the discharge vertical pipe 409, the pulverized coal will enter the interior of the receiving funnel 405.

[0039] According to the above content, it can be seen that during the high-temperature smelting process, a part of the reducing gas (accounting for about 75% of the total reducing gas) will enter the reduction furnace body 2 from the air inlet pipe 407, and another part of the reducing gas (accounting for about 25% of the total reducing gas) will enter the blowing tube 404 through the connecting gas nozzle 406, and then enter the reduction furnace body 2 through the horizontal pipe 402.

[0040] At the same time, the pulverized coal processed by the pulverized coal adding 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 circular tube 404 and quickly enter the interior of the horizontal pipe 402 under the blowing of the reducing airflow.

[0041] Then, if Figure 5As shown, the pulverized coal will enter the distribution cavity 403 horizontally through the horizontal pipe 402. After multiple strands of pulverized coal merge inside the distribution cavity 403, they will fall downward in a circular form, which can effectively improve the uniformity of contact between the pulverized coal and solid waste. Moreover, in the process of the pulverized coal falling downward in a circular form, the liquid fuel sprayed from multiple circular injection holes will fully contact the pulverized coal, so that the pulverized coal can be quickly ignited after entering the furnace.

[0042] Moreover, if Figure 7 and Figure 8 As shown, the reducing gas entering the furnace through the air inlet pipe 407 will be ejected downward through the multiple exhaust holes on the exhaust disc 408. Next, a part of the gas will enter the interior of the distribution cavity 403 through the cleaning arc groove 410, which can not only make the merged pulverized coal fall downward quickly, but also prevent the pulverized coal from adhering to the interior of the distribution cavity 403 and causing blockage.

[0043] In this embodiment, by setting a high-temperature reduction mechanism 4 and utilizing the mutual cooperation between the material distribution circular rail 401 and the blowing circular tube 404, the pulverized coal can be made to fall downward uniformly in the form of a circular ring. Compared with the method of directly adding anthracite into the furnace in the prior art, the contact rate between the pulverized coal and the solid waste can be effectively improved, thereby improving the direct recovery rate of the metal; moreover, in this embodiment, by setting a high-temperature reduction mechanism 4 and utilizing the mutual cooperation between the material distribution circular rail 401 and the fuel filling assembly 306, during the process of the pulverized coal falling downward in the form of a circular ring, the liquid fuel will be discharged from the furnace. The circular injection holes spray out the material evenly and fully contact the pulverized coal, thereby ensuring that the pulverized coal can be ignited in a very short time after entering the furnace, which can effectively improve the efficiency of smelting and processing; in addition, this embodiment sets a high-temperature reduction mechanism 4, and utilizes the mutual cooperation between the exhaust disc 408 and the distribution circular rail 401. A part of the reducing gas discharged from the exhaust disc 408 will enter the interior of the distribution cavity 403 through the cleaning arc groove 410, which can make the merged pulverized coal fall down quickly, and avoid the pulverized coal adhering to the interior of the distribution cavity 403 and causing blockage.

[0044] Example 2

[0045] In order to prevent the presence of large particles in the pulverized coal from clogging the discharge vertical pipe 409 and the horizontal pipe 402, based on the first embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 8 as well as Figure 9As shown, this embodiment is provided with a pulverized coal adding mechanism 5. Specifically, the pulverized coal adding mechanism 5 includes an operating frame 501, on which a grinding round tank 502 is fixedly mounted. The upper end of the discharge vertical pipe 409 is connected to the interior of the grinding round tank 502, and a scraper inclined plate 506 contacts the side wall of the bottom of the grinding round tank 502. As the scraper inclined plate 506 rotates along with the rotating circular shaft 504, the finely crushed pulverized coal enters the interior of the discharge vertical pipe 409. A coal adding funnel 503 is provided at the upper end of the grinding round tank 502, and a rotating circular shaft 504 is movably mounted inside the grinding round tank 502. A driving motor 500 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 sequence from bottom to top. The grinding assembly 507 consists of two groups of staggered grinding protrusions. A 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 drop gap. A detachable filter screen 508 is 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 it finer and prevent the presence of larger particles in the pulverized coal from clogging the docking funnel 405.

[0046] According to the above content, during the high-temperature smelting process, the staff will pour 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.

[0047] When the grinding block rotates, it will perform secondary grinding on the pulverized coal in the gap, 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.

[0048] At the same time, the scraper ramp 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 feeding the pulverized coal into the multiple receiving funnels 405 .

[0049] In this embodiment, by providing a pulverized coal adding mechanism 5 and utilizing the mutual cooperation between the grinding assembly 507 and the rotating circular shaft 504, the pulverized coal can be automatically ground during the process of automatically feeding the pulverized coal, thereby avoiding the presence of larger particles inside the pulverized coal that may cause blockage of the discharge vertical pipe 409 and the horizontal pipe 402, and ensuring the uniformity of contact between the pulverized coal and the solid waste; moreover, in this embodiment, by providing a pulverized coal adding mechanism 5 and utilizing the mutual cooperation between the scraper ramp 506 and the rotating circular shaft 504, the pulverized coal can be evenly fed into multiple discharge vertical pipes 409 at one time, thereby ensuring that the quality of multiple streams of pulverized coal is similar.

[0050] Example 3

[0051] In order to improve the efficiency of solid waste smelting and processing as much as possible and reduce the workload of workers, such as Figure 1-Figure 4 As shown, based on the above embodiment, this embodiment is provided with a solid waste feeding mechanism 3. Specifically, the solid waste feeding mechanism 3 includes a mounting bracket 301 fixedly mounted on the 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, a conveyor belt 304 is provided 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 assembly 306 is provided inside the reduction furnace body 2, and a fuel filling assembly 306 is provided. Component 306 includes a vertical injection pipe coaxially arranged with the reduction furnace body 2. A plurality of circular injection holes are provided on the surface of the vertical injection pipe at equal intervals. The lower end of the vertical injection pipe is connected to a fuel pipeline, which extends to the bottom of the mounting base 1. During smelting processing, the fuel will enter the interior of the vertical injection pipe through the fuel pipeline and be sprayed into the furnace through multiple circular injection holes. A temperature measuring component 307 is provided at the upper end of the reduction furnace body 2. When the first feed barrel 302 rotates, it will automatically transport the solid waste to the interior of the reduction furnace body 2. Next, the solid waste will be smelted at high temperature inside the reduction furnace body 2.

[0052] According to the above content, during the solid waste smelting processing, the first feed drum 302 will rotate at a constant rate under the action of the feed motor 305. When the first feed drum 302 rotates, the solid waste will enter the interior of the reduction furnace body 2 under the action of the conveyor belt 304, thereby automatically feeding the solid waste.

[0053] Moreover, a closed baffle is slidably connected to the inside of the side wall of the reduction furnace body 2. During the feeding process, the closed baffle will move up to the inside of the side wall. After the feeding is completed, the closed baffle will automatically move down to cover the feed port.

[0054] Next, the liquid fuel in the fuel pipeline will first enter the interior of the injection vertical pipe, and then be evenly sprayed into the furnace through multiple injection holes, thereby smelting the solid waste in the furnace at high temperature, so that the metal in the waste exists in the form of oxides.

[0055] This embodiment provides a solid waste feeding mechanism 3 and utilizes the mutual cooperation between the conveyor belt 304 and the fuel filling assembly 306, which can not only automatically feed the solid waste, but also evenly spray the liquid fuel into the interior of the reduction furnace body 2, which can effectively improve the uniformity of the fuel distribution among the solid waste, thereby improving the efficiency of the smelting process.

[0056] Example 4

[0057] In order to prevent the waste gas generated during the smelting process from being directly discharged and causing pollution to the surrounding environment, such as Figure 4 and Figure 10 As shown, on the basis of the above embodiment, the present embodiment is provided with an exhaust gas purification mechanism 6, specifically, the exhaust gas purification mechanism 6 includes an exhaust pipe 601 fixedly installed on the upper end of the reduction furnace body 2, a clean gas cylinder 602 is coaxially arranged on the exhaust pipe 601, and an installation component 603 is arranged inside the clean gas cylinder 602, the installation component 603 includes a mounting disc detachably mounted inside the clean gas cylinder 602, a fixed round rod is coaxially fixedly installed on the mounting disc, and the fixed round rod passes through the ceramic cooling disc 605 and the activated carbon block 604 in sequence. When the staff pulls out the mounting disc, the activated carbon block 604 and the ceramic cooling disc 605 can be pulled out together, thereby achieving the effect of easy replacement, the installation component 603 is provided with an activated carbon block 604 and a ceramic cooling disc 605, and a suction component 606 is fixedly installed on the outside of the clean gas cylinder 602, and when the suction component 606 is powered on, the gas in the reduction furnace body 2 will be discharged outward through the exhaust pipe 601 and the clean gas cylinder 602.

[0058] According to the above content, after high-temperature smelting is completed, the suction component 606 will automatically extract the exhaust gas inside the reduction furnace body 2 through the exhaust pipe 601, so that the exhaust gas enters the interior of the clean air cylinder 602 through the exhaust pipe 601.

[0059] Next, the activated carbon block 604 will adsorb and remove harmful components such as sulfur dioxide and carbon dioxide in the exhaust gas, and the ceramic cooling plate 605 can dissipate heat and cool the exhaust gas with a higher temperature, thereby preventing the exhaust gas from affecting the surrounding environment after being discharged.

[0060] This embodiment provides an exhaust gas purification mechanism 6 and utilizes the interaction between the ceramic cooling plate 605 and the activated carbon block 604 to not only adsorb and remove harmful components in the smelting exhaust gas, but also dissipate heat and cool the smelting exhaust gas, thereby greatly reducing the impact of the exhaust gas on the surrounding environment.

[0061] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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) includes a material distribution circular rail (401) that 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 tube (404) is fixedly installed at one end extending to the outside of the reduction furnace body (2), a material receiving funnel (405) is provided on the blowing tube (404), a connecting air nozzle (406) is provided on the side of the blowing 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 provided above the material receiving funnel (405); 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). When the reducing gas is discharged downward through the air inlet pipe (407) and the exhaust disc (408), a portion of the reducing gas will enter the interior of the material distribution cavity (403) through the cleaning arc groove (410), thereby blowing and cleaning the material distribution circular track (401).

2. 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 filled with reducing gas, and the number of the discharge vertical pipes (409) matches the number of the receiving funnels (405).

3. 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 provided 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 assembly (306) is provided inside the reduction furnace body (2); and a temperature measuring assembly (307) is provided at the upper end of the reduction furnace body (2).

4. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 3, characterized in that: The fuel filling assembly (306) includes a spraying vertical pipe coaxially arranged with the reduction furnace body (2), a surface of the spraying vertical pipe is provided with a plurality of spraying circular holes at equal intervals, and the lower end of the spraying vertical pipe is connected to a fuel pipeline, which extends to the bottom of the mounting base (1).

5. 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), a grinding round tank (502) is fixedly mounted on the operating frame (501), a coal adding funnel (503) is provided at the upper end of the grinding round tank (502), a rotating circular shaft (504) is movably mounted inside the grinding round tank (502), a driving motor (505) for driving the rotating circular 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 sequentially arranged on the outside of the rotating circular shaft (504) from bottom to top, a filter screen (508) is detachably mounted inside the grinding round tank (502), and the filter screen (508) is located between the scraping inclined plate (506) and the grinding assembly (507).

6. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 5, 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).

7. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 5, characterized in that: The grinding assembly (507) is composed of two groups of staggered grinding protrusions, and a blanking gap is provided between the grinding protrusions and the inner wall of the grinding round can (502).

8. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 1, characterized in that: The waste gas purification mechanism (6) includes 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).

9. The high-efficiency reduction furnace for solid waste smelting treatment according to claim 8, characterized in that: The mounting assembly (603) comprises a mounting disc that is detachably mounted inside the clean air cylinder (602), and a fixed round rod is coaxially fixedly mounted on the mounting disc, and the fixed round rod passes through the ceramic cooling disc (605) and the activated carbon block (604) in sequence.

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