Melting pyrolyzer

Abstract

The utility model provides a melting pyrolyzer. According to the melting pyrolyzer, materials to be melted and pyrolyzed are fed into a crucible through a first feeding channel, the crucible is used for containing the materials and matched with a top cover arranged on the crucible in a covering mode to provide a closed reaction environment for the materials, a plurality of channels are formed in the top cover and used for being connected with pipelines or equipment, and a heating device is arranged outside the crucible to heat the crucible. The temperature in the crucible is increased so that the materials can be subjected to a melting pyrolysis reaction, the tail gas recycling pipe arranged at the top of the crucible is used for recycling high-temperature tail gas generated in the melting pyrolysis reaction process of the materials, and the materials subjected to melting pyrolysis are conveyed out of the crucible through the first discharging channel. The high-temperature tail gas generated in the melting or pyrolytic reaction process is conveyed to other procedures, gas with recovery value in the high-temperature tail gas is recycled, resource waste is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material melting and pyrolysis, in particular to a melting pyrolyzer. Background Art

[0002] In the chemical production process, the melt pyrolyzer is mainly used to heat and melt various raw materials in order to produce the required chemicals. Therefore, the melt pyrolyzer is widely used in the field of chemical production, especially in the production process of preparing molten magnesium chloride, the melt pyrolyzer is one of the indispensable devices.

[0003] In view of the high-temperature exhaust gas generated by the internal melting reaction during the production process of the melt pyrolyzer, the existing melt pyrolyzer usually sends the high-temperature exhaust gas into a purification system through an exhaust pipe. The high-temperature exhaust gas is processed by the purification system and discharged into the atmosphere after meeting the emission conditions. On the one hand, the existing melt pyrolyzer cannot recover the gas with reuse value in the high-temperature exhaust gas. On the other hand, in order to make the exhaust gas meet the emission standards, a large amount of cost needs to be invested in the construction of a supporting exhaust gas treatment device. Therefore, the existing melt pyrolyzer has the problems of waste of resources and high exhaust gas treatment cost. Utility Model Content

[0004] The main purpose of the utility model is to provide a melting pyrolyzer, which can recycle high-temperature tail gas through a tail gas recovery pipe, thereby avoiding waste of resources and reducing production costs.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a melting pyrolyzer is provided, comprising a first feed channel, a first discharge channel, a heating device, a crucible, a top cover and a tail gas recovery pipe, wherein the first feed channel and the first discharge channel are arranged on the top cover and are connected to the interior of the crucible, the heating device is arranged outside the crucible, the top cover is arranged on the top of the crucible, the tail gas recovery pipe is arranged on the top cover and is connected to the interior of the crucible, and one end of the tail gas recovery pipe inside the crucible extends to the top of the crucible.

[0006] Furthermore, the melting pyrolyzer also includes a discharge pipe, one end of which is arranged in the first discharge channel and extends to the bottom of the crucible.

[0007] Furthermore, the melting pyrolyzer also includes a first sleeve, which is arranged on the outside of the discharge pipe. The first sleeve includes a first vertical section, a horizontal section, and a bent section connecting the first vertical section and the horizontal section. The first vertical section is a circular tube and is passed through the first discharge channel. The bent section and the horizontal section are semicircular tubes with openings facing upward. The discharge pipe is installed in the first sleeve, and one end of the discharge pipe passes through the first vertical section and extends into the crucible. The discharge pipe is supported by the horizontal section.

[0008] Furthermore, the melting pyrolyzer also includes a second sleeve, which is covered on the upper part of the horizontal section and forms a pipeline with the horizontal section for the discharge pipe to pass through, and the second sleeve is clamped with the horizontal section.

[0009] Furthermore, a tube pad is provided in the horizontal section, the tube pad is provided at the bottom of the horizontal section, and the discharge pipe is placed on the tube pad.

[0010] Furthermore, the first vertical section includes a first connecting section and a second connecting section, the first connecting section is fixedly arranged in the first discharge channel, the second connecting section is connected to the bending section, and the first connecting section and the second connecting section are fixedly connected; and / or, a tube pad is sleeved in the first connecting section, and the tube pad is sleeved outside the discharge pipe.

[0011] Furthermore, the first sleeve also includes a second vertical section, which is a circular tube. The first vertical section is arranged at the first end of the horizontal section, and the second vertical section is arranged at the second end of the horizontal section. The second vertical section and the horizontal section are connected by a bending section.

[0012] Furthermore, the melting pyrolyzer also includes a material tank, which is a closed tank body and is connected to the interior of the crucible through a discharge pipe.

[0013] Furthermore, the material tank also includes a second feed channel and a second discharge channel, which are arranged at the top of the material tank and connected to the inside of the material tank, and the end of the discharge pipe away from the crucible is arranged in the second feed channel.

[0014] Furthermore, the melting pyrolyzer also includes a material tank, the material tank also includes a second feed channel, the second vertical section includes a third connecting section and a fourth connecting section, the third connecting section is connected to the bending section, the fourth connecting section is fixedly arranged in the second feed channel, and the third connecting section and the fourth connecting section are fixedly connected; and / or, a pipe gasket is sleeved in the fourth connecting section, and the pipe gasket is sleeved outside the discharge pipe.

[0015] Furthermore, the melting pyrolyzer also includes a furnace body, which is provided with a recess matching the size of the crucible, and the crucible is arranged in the recess; and / or, the heating device is arranged in the furnace body, and the distance from the heating device to the crucible is less than the distance from the heating device to the outer side of the furnace body.

[0016] According to the technical solution of the present invention, the crucible is used to hold materials and cooperates with the top cover provided on the crucible to provide a closed reaction environment for the materials. The top cover is provided with multiple channels for connecting pipelines or equipment. The materials to be melted and pyrolyzed enter the crucible through the first feed channel. The heating device is provided outside the crucible to heat the crucible, thereby increasing the temperature inside the crucible to cause the materials to undergo a melting and pyrolysis reaction. The tail gas recovery pipe provided on the top of the crucible is used to recover the high-temperature tail gas generated by the materials during the melting and pyrolysis reaction. The materials that have completed the melting and pyrolysis are transported out of the crucible through the first discharge channel. By providing the tail gas recovery pipe on the top of the melting pyrolyzer, the high-temperature tail gas generated during the melting or pyrolysis reaction is transported to other processes, and the gas with recovery value in the high-temperature tail gas is reused, thereby reducing resource waste and lowering production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The figure shows the overall structure of the melting pyrolyzer of the embodiment of the present utility model;

[0019] Figure 2 A schematic top view of the top cover of the molten pyrolyzer according to an embodiment of the present invention is shown;

[0020] Figure 3 A partial structural schematic diagram of a discharge pipe of a melt pyrolyzer according to an embodiment of the present utility model is shown;

[0021] Figure 4 The figure shows the overall structure of the material tank of the melt pyrolyzer according to the embodiment of the present invention;

[0022] Figure 5 A schematic diagram showing a top view of a feed tank of a molten pyrolyzer according to an embodiment of the present invention; and

[0023] Figure 6 Another overall structural schematic diagram of the material tank of the melting pyrolyzer according to an embodiment of the present utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 1. First feed channel; 2. First discharge channel; 3. Heating device; 4. Crucible; 5. Top cover; 6. Tail gas recovery pipe; 7. Discharge pipe; 8. First sleeve; 81. First vertical section; 811. First connecting section; 812. Second connecting section; 82. Horizontal section; 83. Bend section; 84. Second vertical section; 841. Third connecting section; 842. Fourth connecting section; 9. Second sleeve; 10. Pipe pad; 11. Material tank; 111. Second feed channel; 112. Second discharge channel; 12. Furnace body. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] like Figures 1 to 6 As shown, according to an embodiment of the present invention, the melting pyrolyzer includes a first feed channel 1, a first discharge channel 2, a heating device 3, a crucible 4, a top cover 5 and a tail gas recovery pipe 6. The first feed channel 1 and the first discharge channel 2 are arranged on the top cover 5 and are connected to the interior of the crucible 4. The heating device 3 is arranged outside the crucible 4, the top cover 5 is arranged on the top of the crucible 4, the tail gas recovery pipe 6 is arranged on the top cover 5 and is connected to the interior of the crucible 4, and one end of the tail gas recovery pipe 6 inside the crucible 4 extends to the top of the crucible 4.

[0028] In the above technical solution, the crucible 4 is used to contain materials and cooperates with the top cover 5 provided on the crucible 4 to provide a closed reaction environment for the materials. A plurality of channels are provided on the top cover 5 to connect pipelines or equipment. The material to be melted and pyrolyzed enters the crucible 4 through the first feed channel 1. The heating device 3 is provided outside the crucible 4 to heat the crucible 4, thereby increasing the temperature inside the crucible 4 to cause the material to undergo a melting and pyrolysis reaction. The tail gas recovery pipe 6 provided on the top of the crucible 4 is used to recover the high-temperature tail gas generated by the material during the melting and pyrolysis reaction. The material that has completed the melting and pyrolysis is transported out of the crucible 4 through the first discharge channel 2. By providing the tail gas recovery pipe 6 on the top of the melting pyrolyzer, the high-temperature tail gas generated during the melting or pyrolysis reaction is transported to other processes, and the gas with recovery value in the high-temperature tail gas is reused, thereby reducing resource waste and lowering production costs.

[0029] In one embodiment, the crucible 4 is a quartz crucible. The quartz crucible has good high temperature resistance and a longer service life than ordinary crucibles. The quartz crucible also has good heat preservation performance, thereby improving the melting pyrolysis efficiency and reducing energy consumption.

[0030] In one embodiment, the top cover 5 is made of thermal insulation material, thereby reducing the heat loss from the top cover 5 during the material melting and pyrolysis process, thereby reducing energy consumption.

[0031] In one embodiment, the heating device is an electric heating device. Compared with the heating method using fuel combustion, electric heating has a faster heating speed, more precise temperature control, and is more environmentally friendly and energy-saving.

[0032] In one embodiment, the melting pyrolyzer further includes a vacuum pumping device, a level meter, a sight glass, and a temperature measuring device. The vacuum pumping device, the level meter, the sight glass, and the temperature measuring device are all arranged on the top cover 5 and connected to the interior of the crucible 4 .

[0033] In the above scheme, the vacuum device is used to remove the air in the crucible 4, so that a pure, oxygen-free reaction environment is formed in the crucible 4, thereby preventing the material from oxidizing and deteriorating during the melt pyrolysis process; the material level meter is arranged on the top cover 5 and extends into the crucible 4, and is used to indicate the height of the material in the crucible 4; the sight glass is used to visually observe the reaction status of the material in the melt pyrolyzer; the temperature measuring device is arranged on the top cover 5 and extends into the crucible 4, and is used to indicate the temperature of the reaction environment in the crucible 4.

[0034] In one embodiment, the melt pyrolyzer further includes a discharge pipe 7 , one end of which is disposed in the first discharge channel 2 and extends to the bottom of the crucible 4 .

[0035] In the above technical solution, the discharge pipe 7 is used to discharge the molten material from the crucible 4. The discharge pipe 7 extends to the bottom of the crucible 4, so as to discharge the molten material from the crucible 4 as completely as possible and reduce the molten material remaining at the bottom of the crucible 4.

[0036] In one embodiment, the melting pyrolyzer also includes a first sleeve 8, which is sleeved on the outside of the discharge pipe 7. The first sleeve 8 includes a first vertical section 81, a horizontal section 82, and a bent section 83 connecting the first vertical section 81 and the horizontal section 82. The first vertical section 81 is a circular tube and is passed through the first discharge channel 2. The bent section 83 and the horizontal section 82 are semicircular tubes with openings facing upward. The discharge pipe 7 is installed in the first sleeve 8, and one end of the discharge pipe 7 passes through the first vertical section and extends into the crucible 4. The discharge pipe 7 is supported by the horizontal section 82.

[0037] In the above technical solution, the first sleeve 8 is sleeved on the outside of the discharge pipe 7 to protect the discharge pipe 7. The first sleeve 8 includes a first vertical section 81, a horizontal section 82 and a bent section 83 connecting the first vertical section 81 and the horizontal section 82. The horizontal section 82 of the first sleeve 8 supports the horizontal section of the discharge pipe 7 and supports the discharge pipe 7; the first vertical section 81 is a circular tube to protect the vertical section of the discharge pipe 7 corresponding to the first vertical section 81; the first vertical section 81 is arranged in the first discharge channel 2 to support the horizontal section 82 and the bent section 83 connected to the first vertical section 81, so that the horizontal section 82 and the bent section 83 are fixedly connected to the first discharge channel 2 through the first vertical section 81; the bent section 83 and the horizontal section 82 are semicircular tubes with the openings facing upward, so that the discharge pipe 7 can be placed in the first sleeve 8 from above the first sleeve 8, thereby being installed in the first sleeve 8.

[0038] In one embodiment, the discharge pipe 7 is a quartz tube. The quartz discharge pipe 7 has excellent high temperature resistance and corrosion resistance, which can prevent the molten material from being damaged by high temperature and corrosive substances after being transported for a long time.

[0039] In one embodiment, the discharge pipe 7 is clearance-fitted with the first vertical section 81 and the bent section 83 of the first sleeve 8, and the discharge pipe 7 is only in contact with the horizontal section 82 of the first sleeve 8. The horizontal section 82 supports the discharge pipe 7, thereby reducing the contact area between the discharge pipe 7 and the first sleeve 8 as much as possible, and avoiding collision between the discharge pipe 7 and the first sleeve 8 to cause damage to the discharge pipe 7. Especially when the discharge pipe 7 is a quartz tube, the quartz discharge pipe is easier to break than the conventional discharge pipe. Therefore, the discharge pipe 7 is clearance-fitted with the first vertical section 81 and the bent section 83 of the first sleeve 8 to reduce the contact between the discharge pipe 7 and the first sleeve 8, thereby reducing the risk of the discharge pipe 7 breaking.

[0040] In one embodiment, the melting pyrolyzer further includes a second sleeve 9 , which is covered on the upper portion of the horizontal section 82 and forms a pipeline with the horizontal section 82 for the discharge pipe 7 to pass through, and the second sleeve 9 is clamped with the horizontal section 82 .

[0041] In the above technical solution, after the discharge pipe 7 is placed into the first sleeve 8 from above the first sleeve 8, a second sleeve 9 is provided on the upper part of the horizontal section 82. The second sleeve 9 is clamped and fixed to the horizontal section 82 to form a pipeline for the discharge pipe 7 to pass through, thereby preventing external impurities from entering the horizontal section 82 from the upper opening of the horizontal section 82 of the first sleeve 8, causing collision or friction with the discharge pipe 7 and causing damage to the discharge pipe 7, thereby further protecting the horizontal section of the discharge pipe 7.

[0042] In one embodiment, a tube mat 10 is provided in the horizontal section 82 . The tube mat 10 is provided at the bottom of the horizontal section 82 , and the discharge pipe 7 is placed on the tube mat 10 .

[0043] In the above technical solution, the pipe pad 10 is arranged at the bottom of the horizontal section 82, and the discharge pipe 7 is placed on the pipe pad 10. The horizontal section 82 of the first sleeve 8 supports the discharge pipe 7 through the pipe pad 10 to support the discharge pipe 7, thereby avoiding direct contact between the discharge pipe 7 and the hard surface of the horizontal section 82 after the discharge pipe 7 is installed in the first sleeve 8, thereby avoiding friction and collision between the discharge pipe 7 and the horizontal section 82, causing damage to the discharge pipe 7.

[0044] In one embodiment, the first vertical section 81 includes a first connecting section 811 and a second connecting section 812, the first connecting section 811 is fixedly arranged in the first discharge channel 2, the second connecting section 812 is connected to the bending section 83, and the first connecting section 811 and the second connecting section 812 are fixedly connected; and / or, a tube pad 10 is sleeved in the first connecting section 811, and the tube pad 10 is sleeved outside the discharge pipe 7.

[0045] In the above technical solution, the first vertical section 81 includes a first connecting section 811 and a second connecting section 812, the first connecting section 811 is fixedly arranged in the first discharge channel 2, and the second connecting section 812 is connected to the bending section 83. The first connecting section 811 and the second connecting section 812 are fixedly connected to each other, so that the bending section 83 and the horizontal section 82 connected to the bending section 83 are fixedly connected to the first discharge channel 2; in addition, the first vertical section 81 is split into a split design of the first connecting section 811 and the second connecting section 812, which facilitates the disassembly and maintenance of the various sections of the first sleeve 8. When the bending section 83 or the horizontal section 82 or the second connecting section 812 are fixedly connected, the bending section 83 and the horizontal section 82 connected to the bending section 83 are fixedly connected to the first discharge channel 2. When 812 is damaged and needs to be replaced, it is only necessary to release the fixed connection between the first connecting section 811 and the second connecting section 812 and replace other structures except the first connecting section 811. There is no need to remove the first connecting section 811 from the first discharge channel 2, thereby reducing disassembly and maintenance costs; a pipe gasket 10 is sleeved in the first connecting section 811, and the pipe gasket 10 is sleeved outside the discharge pipe 7 to fix and protect the discharge pipe 7, avoiding direct contact between the discharge pipe 7 and the hard inner wall of the first discharge channel 2 after the discharge pipe 7 is passed through the first discharge channel 2, thereby preventing the discharge pipe 7 from colliding and rubbing with the inner wall of the first discharge channel 2, causing damage to the discharge pipe 7.

[0046] In one embodiment, the first sleeve 8 also includes a second vertical section 84, which is a circular tube. The first vertical section 81 is arranged at the first end of the horizontal section 82, and the second vertical section 84 is arranged at the second end of the horizontal section 82. The second vertical section 84 is connected to the horizontal section 82 through a bending section 83.

[0047] In the above technical solution, by setting the second vertical section 84, the feeding direction of the discharge pipe 7 is changed, so that the melted material passes through the first vertical section 81 and the horizontal section 82 and is then transported to the next link by the second vertical section 84; the second vertical section 84 is a circular tube, which is sleeved on the outside of the discharge pipe 7 to protect the vertical part of the discharge pipe 7 within the second vertical section 84.

[0048] In one embodiment, the melt pyrolyzer further includes a material tank 11 , which is a sealed tank body and is connected to the interior of the crucible 4 through a discharge pipe 7 .

[0049] In the above technical solution, the material tank 11 is used to store the molten material after being processed by the melting pyrolyzer; the material tank 11 is connected to the interior of the crucible 4 through the discharge pipe 7, so that the material after the melt pyrolysis reaction in the crucible 4 is completed is transported to the material tank 11 through the discharge pipe 7; the material tank 11 is a closed tank body to prevent the molten material stored in the material tank 11 from contacting with the outside air, which may cause changes in the properties of the molten material.

[0050] In one embodiment, the material tank 11 includes a negative pressure device, which creates a negative pressure environment inside the material tank 11 so that the air pressure inside the material tank 11 is lower than the air pressure inside the crucible 4. The molten material in the crucible 4 is sucked into the material tank 11 through the discharge pipe 7 under the action of the air pressure, thereby realizing the transportation of the molten material.

[0051] In one embodiment, the material tank 11 further includes a second feed channel 111 and a second discharge channel 112. The second feed channel 111 and the second discharge channel 112 are arranged at the top of the material tank 11 and connected to the interior of the material tank 11. The end of the discharge pipe 7 away from the crucible 4 is arranged in the second feed channel 111.

[0052] In the above technical solution, the end of the discharge pipe 7 away from the crucible 4 is arranged in the second feed channel 111, and the molten material in the crucible 4 is transported to the material tank 11 by the discharge pipe 7. The second discharge channel 112 is used to transport the molten material in the material tank 11 to the next link.

[0053] In one embodiment, the melting pyrolyzer also includes a material tank 11, the material tank 11 also includes a second feed channel 111, the second vertical section 84 includes a third connecting section 841 and a fourth connecting section 842, the third connecting section 841 is connected to the bending section 83, the fourth connecting section 842 is fixedly arranged in the second feed channel 111, and the third connecting section 841 and the fourth connecting section 842 are fixedly connected; and / or, a tube pad 10 is sleeved in the fourth connecting section 842, and the tube pad 10 is sleeved outside the discharge pipe 7.

[0054] In the above technical solution, the second vertical section 84 includes a third connecting section 841 and a fourth connecting section 842, the third connecting section 841 is connected to the bending section 83, and the fourth connecting section 842 is fixedly arranged in the second feed channel 111, and the fixed connection between the third connecting section 841 and the fourth connecting section 842 is realized to achieve a fixed connection between the bending section 83 and the horizontal section 82 connected to the bending section 83 and the second feed channel 111; in addition, the split design of splitting the second vertical section 84 into the third connecting section 841 and the fourth connecting section 842 facilitates the disassembly and maintenance of the various sections of the first sleeve 8. When the bending section 83 or the horizontal section 82 or the third connecting section 841 is fixed, the second vertical section 84 is connected to the second feed channel 111. When 41 is damaged and needs to be replaced, it is only necessary to release the fixed connection between the third connecting segment 841 and the fourth connecting segment 842 and replace other structures except the fourth connecting segment 842. There is no need to remove the fourth connecting segment 842 from the second feed channel 111, thereby reducing the disassembly and maintenance costs; a tube gasket 10 is sleeved in the fourth connecting segment 842, and the tube gasket 10 is sleeved outside the discharge pipe 7 to fix and protect the discharge pipe 7, avoiding direct contact between the discharge pipe 7 and the hard inner wall of the second feed channel 111 after the discharge pipe 7 is passed through the second feed channel 111, thereby preventing the discharge pipe 7 from colliding and rubbing with the inner wall of the second feed channel 111 and causing damage to the discharge pipe 7.

[0055] In one embodiment, the molten pyrolyzer further includes a furnace body 12, which is provided with a recess matching the size of the crucible 4, and the crucible 4 is arranged in the recess; and / or, the heating device 3 is arranged in the furnace body 12, and the distance from the heating device 3 to the crucible 4 is less than the distance from the heating device 3 to the outer side of the furnace body 12.

[0056] In the above technical solution, a depression matching the size of the crucible 4 is provided on the furnace body 12, and the crucible 4 is arranged in the depression. Since the bottom of the crucible 4 is curved, it cannot be placed stably. At the same time, the crucible 4 is relatively fragile and easily damaged. Therefore, the furnace body 12 is arranged to wrap around the crucible 4, so that the furnace body 12 can fix and protect the crucible 4; the heating device 3 is arranged in the furnace body 12. When the heating device 3 is turned on to heat the crucible 4, the heat generated by the heating device 3 can be conducted to the four sides of the crucible 4 through the furnace body 12 wrapped around the crucible 4, and the crucible 4 is heated from all directions, so that the temperature distribution is more uniform.

[0057] In one embodiment, the furnace body 12 is made of thermal insulation material, which can reduce heat loss of the crucible 4 and improve the heating efficiency of the heating device 3, thereby reducing energy consumption and production costs.

[0058] In one embodiment, the pipe pad 10 is a soft pipe pad. By using the pipe pad 10 made of soft material to support the discharge pipe 7, it can further absorb the force between the first sleeve 8 and the discharge pipe 7, and play a buffering role, thereby better protecting the discharge pipe 7 and avoiding the discharge pipe 7 and the first sleeve 8 from rubbing and colliding with each other, causing damage to the discharge pipe 7.

[0059] The working process of the melting pyrolyzer of the present invention is as follows: the material to be melted and pyrolyzed is fed into the crucible 4 through the first feed channel 1, and then the first feed channel 1 and the first discharge channel 2 are closed, the air in the crucible 4 is removed by the vacuum device, and then the heating device 3 is turned on to heat the material in the crucible 4. A large amount of high-temperature tail gas will be generated during the process of the material being heated and melted. On the one hand, the high-temperature tail gas in the crucible 4 has a high temperature, thereby ensuring the temperature of the reaction environment in the crucible 4 and preventing the surface temperature of the molten material from decreasing and causing crystallization. On the other hand, the high-temperature tail gas plays the role of a protective gas, preventing the material from coming into contact with the air during the process of melting and pyrolysis in the crucible 4. Oxidation occurs, and then the high-temperature exhaust gas is recycled and utilized through the exhaust gas recovery pipe 6. After the melt pyrolysis is completed, the negative pressure device is turned on to form a negative pressure space in the material tank 11. After the first discharge channel 2 is opened, the molten material is extracted from the crucible 4 through the discharge pipe 7 to the material tank 11 under the action of air pressure for storage, and then the molten material is transported to other process links through the second discharge channel 112 as needed; the molten material in the crucible 4 is extracted until the liquid level of the molten material drops to a certain height, and the material to be melted and pyrolyzed continues to be fed from the first feed channel 1, and the above melt pyrolysis process is circulated, thereby realizing continuous production and further improving production efficiency.

[0060] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the material to be melted and pyrolyzed enters the crucible 4 through the first feed channel 1, the crucible 4 is used to contain the material, and cooperates with the top cover 5 provided on the crucible 4 to provide a closed reaction environment for the material, and a plurality of channels are provided on the top cover 5 to connect pipelines or equipment, the heating device 3 is provided outside the crucible 4 to heat the crucible 4, increase the internal temperature of the crucible 4 to cause the material to undergo a melting and pyrolysis reaction, and the tail gas recovery pipe 6 provided on the top of the crucible 4 is used to recover the high-temperature tail gas generated by the material during the melting and pyrolysis reaction. The material that has completed the melting and pyrolysis is transported out of the crucible 4 through the first discharge channel 2. By arranging the tail gas recovery pipe 6 on the top of the melting pyrolyzer, the high-temperature tail gas generated during the melting or pyrolysis reaction is transported to other processes, and the gas with recovery value in the high-temperature tail gas is reused, thereby reducing resource waste and lowering production costs.

[0061] Obviously, the embodiments described above 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 should fall within the scope of protection of the present invention.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A melt pyrolyzer, characterized in that: The invention comprises a first feed channel (1), a first discharge channel (2), a heating device (3), a crucible (4), a top cover (5) and an exhaust gas recovery pipe (6); the first feed channel (1) and the first discharge channel (2) are arranged on the top cover (5) and are connected to the interior of the crucible (4); the heating device (3) is arranged outside the crucible (4); the top cover (5) is arranged on the top of the crucible (4); the exhaust gas recovery pipe (6) is arranged on the top cover (5) and is connected to the interior of the crucible (4); and one end of the exhaust gas recovery pipe (6) inside the crucible (4) extends to the top of the crucible (4).

2. The melt pyrolyzer according to claim 1, characterized in that The molten pyrolyzer further comprises a discharge pipe (7), one end of which is arranged in the first discharge channel (2) and extends to the bottom of the crucible (4).

3. The melt pyrolyzer according to claim 2, characterized in that The molten pyrolyzer further comprises a first sleeve (8), which is sleeved on the outside of the discharge pipe (7), and the first sleeve (8) comprises a first vertical section (81), a horizontal section (82), and a bent section (83) connecting the first vertical section (81) and the horizontal section (82), wherein the first vertical section (81) is a circular tube and is passed through the first discharge channel (2), the bent section (83) and the horizontal section (82) are semicircular tubes with openings facing upwards, and the discharge pipe (7) is installed in the first sleeve (8), and one end of the discharge pipe (7) passes through the first vertical section and extends into the crucible (4), and the discharge pipe (7) is supported by the horizontal section (82).

4. The melt pyrolyzer according to claim 3, characterized in that The molten pyrolyzer further comprises a second sleeve (9), which is covered on the upper portion of the horizontal section (82) and forms a pipeline with the horizontal section (82) for the discharge pipe (7) to pass through, and the second sleeve (9) is snap-connected to the horizontal section (82).

5. The melt pyrolyzer according to claim 3, characterized in that A tube pad (10) is provided in the horizontal section (82), the tube pad (10) is provided at the bottom of the horizontal section (82), and the discharge pipe (7) is placed on the tube pad (10).

6. The melt pyrolyzer according to claim 3, characterized in that The first vertical section (81) includes a first connecting section (811) and a second connecting section (812), wherein the first connecting section (811) is fixedly arranged in the first discharge channel (2), and the second connecting section (812) is connected to the bending section (83), and the first connecting section (811) and the second connecting section (812) are fixedly connected; and / or, a tube pad (10) is sleeved in the first connecting section (811), and the tube pad (10) is sleeved outside the discharge pipe (7).

7. The melt pyrolyzer according to claim 3, characterized in that The first sleeve (8) further includes a second vertical section (84), the second vertical section (84) is a circular tube, the first vertical section (81) is arranged at the first end of the horizontal section (82), the second vertical section (84) is arranged at the second end of the horizontal section (82), and the second vertical section (84) and the horizontal section (82) are connected via the bending section (83).

8. The melt pyrolyzer according to claim 3, characterized in that The molten pyrolyzer further comprises a material tank (11), which is a sealed tank body. The material tank (11) is connected to the interior of the crucible (4) through the discharge pipe (7).

9. The melt pyrolyzer according to claim 8, characterized in that The material tank (11) further comprises a second feed channel (111) and a second discharge channel (112), wherein the second feed channel (111) and the second discharge channel (112) are arranged at the top of the material tank (11) and communicate with the interior of the material tank (11), and the end of the discharge pipe (7) away from the crucible (4) is passed through the second feed channel (111).

10. The melt pyrolyzer according to claim 7, characterized in that The molten pyrolyzer further includes a material tank (11), the material tank (11) further includes a second feed channel (111), the second vertical section (84) includes a third connecting section (841) and a fourth connecting section (842), the third connecting section (841) is connected to the bending section (83), the fourth connecting section (842) is fixedly arranged in the second feed channel (111), and the third connecting section (841) and the fourth connecting section (842) are fixedly connected; and / or, a tube gasket (10) is sleeved in the fourth connecting section (842), and the tube gasket (10) is sleeved outside the discharge pipe (7).

11. The melt pyrolyzer according to claim 1, characterized in that The molten pyrolyzer further comprises a furnace body (12), wherein the furnace body (12) is provided with a recess matching the size of the crucible (4), and the crucible (4) is arranged in the recess; and / or, the heating device (3) is arranged in the furnace body (12), and the distance from the heating device (3) to the crucible (4) is smaller than the distance from the heating device (3) to the outer side surface of the furnace body (12).

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