Sulfur dioxide preparation device and preparation process

Abstract

The invention discloses a sulfur dioxide preparation device and technology, and belongs to the technical field of sulfur dioxide preparation, the sulfur dioxide preparation device comprises a furnace body and an exhaust port formed in the top of the furnace body, a funnel-shaped combustion port is formed in the middle of the bottom of the furnace body, and a combustor is installed at the bottom end of the combustion port. The inverted-cone-shaped combustion table is arranged at the position, located over the combustion opening, of the bottom of the furnace body, the combustion groove is formed in the top of the inverted-cone-shaped combustion table, then flame is guided towards the top of the inverted-cone-shaped combustion table through the annular shielding plate, and then the flame is guided to the top of the inverted-cone-shaped combustion table in cooperation with the conical cover and the leakage hole in the top of the conical cover; and when sulfur raw materials fall into the top of the inverted-cone-shaped combustion table through the conical cover, due to the fact that the inverted-cone-shaped combustion table and the conical cover are heated to be in a high-temperature state, the solid raw materials can be directly heated to be in a liquid state, then combustion reaction is conducted, and the functionality of the device is improved. The preparation rate of sulfur dioxide is improved, and the practicability is higher.

Description

Technical Field

[0001] The present invention relates to a sulfur dioxide preparation device and a preparation process, in particular to a sulfur dioxide preparation process, belonging to the technical field of sulfur dioxide preparation. Background Art

[0002] The main method of preparing sulfur dioxide in industry is to burn sulfur or pyrite. Sulfur or pyrite is placed in a combustion furnace and reacts with air at high temperature to generate sulfur dioxide gas. These impurities are then removed by purification equipment to obtain pure sulfur dioxide gas. Finally, the temperature is reduced by cooling equipment for subsequent processing and storage.

[0003] In the prior art, for example, the utility model with application number 201821363845.7 discloses an industrial vertical sulfur combustion furnace. In order to solve the problems that the horizontal sulfur combustion furnace occupies a large area, has high requirements for bricklaying, and is subject to airflow scouring or temperature difference changes for a long time, the mortar between two adjacent insulation bricks is easy to fall off, causing the furnace body to collapse. In addition, the sulfur and air in the horizontal sulfur combustion furnace are not mixed evenly, and the output efficiency of sulfur dioxide is low. The vertical design is convenient for bricklaying, and the overall structural design is reasonable. The furnace body is tangentially inlet and outlet, and the secondary air inlet is longitudinally pushed, so that the air and sulfur flow around and contact, and burn fully, thereby improving the output efficiency of sulfur dioxide.

[0004] Similar to the above application, there are still some shortcomings:

[0005] The raw material supplied by the combustion furnace during use is liquid sulfur. Therefore, during the use of the equipment, it is necessary to cooperate with other equipment to liquefy the sulfur first. The functionality is low and the use is inconvenient. In addition, the heat in the discharged high-temperature gas cannot be recovered and utilized, which increases the energy consumption of the equipment.

[0006] Therefore, a sulfur dioxide preparation device and preparation process are designed to optimize the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a sulfur dioxide preparation device and preparation process, by arranging an inverted cone combustion table at the bottom of the furnace body and directly above the combustion port, and opening a combustion groove at the top of the inverted cone combustion table, and then using an annular shield to guide the flame toward the top of the inverted cone combustion table, and then cooperating with a conical cover and a leakage hole on the top of the conical cover, so that sulfur can evenly fall into the interior of the combustion groove, so that when the sulfur raw material passes through the conical cover and falls onto the top of the inverted cone combustion table, the inverted cone combustion table and the conical cover are heated to a high temperature state, so that the solid raw material can be directly heated to a liquid state, and then a combustion reaction is carried out, thereby increasing the functionality of the device, and improving the rate of sulfur dioxide preparation, and having higher practicality. By arranging a dust removal mechanism composed of a gear ring, a scraper, a first motor, and a driving gear inside the furnace body, it can be used in During the process, the carbon black generated by combustion at the bottom of the inverted cone combustion table is removed to ensure the heat conduction effect of the inverted cone combustion table, and then used in conjunction with a collecting mechanism consisting of a receiving hopper and an ash discharge pipe, the discharge of carbon black is more convenient. The unloading mechanism consisting of a conveying pipe, a spiral conveying rod, a transmission bin, a second motor, a shaft, a first bevel gear, a second bevel gear, a crushing bin, a moving cone, a discharge pipe, and a temporary storage barrel can directly crush and convey the blocky raw materials during use, thereby increasing the reactivity of the raw materials. A temporary storage barrel is provided on the top of the crushing bin to store the raw materials, and a waste heat recovery mechanism consisting of a first outer sleeve, a second outer sleeve, a first circulation pipe, a fan, a second circulation pipe, a heat conducting sheet, and spiral blades can recycle the waste heat in the gas, preheat the raw materials, and reduce the energy consumption of the device.

[0008] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] A sulfur dioxide preparation device comprises a furnace body and an exhaust port opened on the top of the furnace body, a funnel-shaped combustion port is opened in the middle position of the bottom of the furnace body, a burner is installed at the bottom end of the combustion port, an inverted cone combustion table is arranged at the bottom of the furnace body and above the combustion port, a combustion groove is opened on the top of the inverted cone combustion table, an annular shield plate is fixed at the middle position of the furnace body, an arc guide groove is opened at the bottom of the annular shield plate, a conical cover is fixed at the middle position of the inner side of the annular shield plate, leakage holes are evenly opened on the surface of the conical cover, a feeding mechanism for discharging materials from directly above the conical cover is arranged at the top of the outer side of the furnace body, a cleaning mechanism is arranged on the outer side of the inverted cone combustion table, and a collecting mechanism is arranged at the bottom end of the inverted cone combustion table.

[0010] Preferably, partitions are evenly fixed inside the combustion groove, and ends of the partitions are connected to each other in a cross shape.

[0011] Preferably: a cross bar is fixed at the middle position of the bottom end of the furnace body and above the combustion port, a vertical bar is vertically fixed at the middle position of the cross bar, and the top of the vertical bar is fixedly connected to the middle position of the bottom end of the inverted cone combustion platform.

[0012] Preferably: the cleaning mechanism includes a gear ring, a scraper, a first motor and a driving gear, the gear ring is rotatably mounted on the inner wall of the furnace body, and the gear ring is located below the annular shield, an annular groove matching the gear ring is circumferentially opened on the inner wall of the furnace body, the gear ring is located inside the annular groove, and a scraper that fits the surface of the inverted cone combustion table is symmetrically arranged on the inner side of the gear ring, a first motor is installed on the outer side of the furnace body, and a driving gear meshing with the outer side of the gear ring is installed on the output end of the first motor.

[0013] Preferably: the collecting mechanism includes a receiving hopper and an ash discharge pipe, the receiving hopper is fixed at the top of the cross bar and is located directly below the inverted cone combustion table, the bottom end of the receiving hopper is fixed with an ash discharge pipe extending to the outside of the furnace body, the scraper is L-shaped, and the bottom end of the scraper is located inside the receiving hopper.

[0014] Preferably: the unloading mechanism includes a conveying pipe, a spiral conveying rod, a driving assembly and a feeding assembly. The conveying pipe is vertically fixed on the inner wall of the furnace body, and the discharge port at the end of the conveying pipe is located directly above the conical cover. A spiral conveying rod is rotatably installed inside the conveying pipe, the end of the conveying pipe is located outside the furnace body and a driving assembly is provided, and a feeding assembly is provided above the end of the conveying pipe.

[0015] Preferably: the driving assembly includes a transmission bin, a second motor, a shaft and a first bevel gear, the transmission bin is fixed to the outer end of the conveying pipe, the second motor is installed at the bottom end of the transmission bin, the output end of the second motor is installed with a shaft, the shaft passes through the transmission bin, the bottom end of the shaft is located inside the transmission bin and the first bevel gear is installed, one end of the spiral conveying rod extends to the interior of the transmission bin, and the end of the spiral conveying rod located inside the transmission bin is installed with a second bevel gear meshing with the first bevel gear.

[0016] Preferably: the feeding assembly includes a crushing bin, a moving cone, a discharge pipe and a temporary storage cylinder; the crushing bin is fixed on the top of the transmission bin; a discharge pipe is provided between the bottom of the outer side of the crushing bin and the conveying pipe; the shaft extends to the interior of the crushing bin; a moving cone is fixed to the top of the shaft; a temporary storage cylinder is provided at the top of the crushing bin; a waste heat recovery mechanism is provided between the outer side of the temporary storage cylinder and the exhaust port.

[0017] Preferably: the waste heat recovery mechanism includes a first outer sleeve, a second outer sleeve, a first circulation pipe, a fan, a second circulation pipe, heat conductive plates and spiral blades. The first outer sleeve is sleeved on the outside of the exhaust port, and the second outer sleeve is sleeved on the outside of the temporary storage sleeve. The first circulation pipe is fixed between the first outer sleeve and the second outer sleeve, and a fan is installed on the first circulation pipe. The second circulation pipe is installed between the first outer sleeve and the side of the second outer sleeve away from the first circulation pipe. Spiral blades are provided between the inner side of the second outer sleeve and the crushing bin, and heat conductive plates extending to the interior of the first outer sleeve are evenly fixed on the inner wall of the exhaust port.

[0018] The present invention also provides a process for preparing sulfur dioxide, comprising the following steps:

[0019] Step 1: Ignite the burner, the flame heats the inverted cone combustion table, and spreads upward along the surface of the inverted cone combustion table, and then guides through the inside of the arc guide groove to burn the inside of the combustion groove. The surface temperature of the cone cover rises with the increase of the temperature inside the furnace body;

[0020] Step 2: Solid sulfur is put into the temporary storage cylinder. Since the exhaust port discharges high-temperature gas, the fan is started to transfer the heat in the gas to the outside of the temporary storage cylinder to preheat the raw materials inside the temporary storage cylinder;

[0021] Step 3: Start the second motor to drive the moving cone inside the crushing bin and the spiral conveying rod inside the conveying pipe to rotate simultaneously, the moving cone crushes the sulfur and injects it into the conveying pipe through the discharge pipe, the sulfur powder inside the conveying pipe is transported toward the inside of the furnace body through the rotation of the spiral conveying rod and is dropped from the top of the conical cover;

[0022] Step 4: The sulfur falls onto the high-temperature surface of the conical cover and is initially liquefied, and then falls evenly from the leak hole into the interior of the combustion tank. Since the inverted conical combustion table has a high temperature, the sulfur can be liquefied again. Since the flame can be guided into the interior of the combustion tank, the sulfur is ignited, and the combustion produces sulfur dioxide gas which is discharged from the interior of the exhaust port;

[0023] Step 5: When the burner is ignited, if the combustion is not complete, carbon black may be produced on the surface of the inverted cone combustion table. In order to ensure the heat conduction effect of the inverted cone combustion table, start the first motor to control the gear ring to drive the scraper to rotate, and scrape off the carbon black on the surface of the inverted cone combustion table. The carbon black falls onto the L-shaped scraper and slides downward to the inside of the receiving hopper and is stored. Finally, open the ash discharge pipe to discharge and clean the carbon black.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a sulfur dioxide preparation device and preparation process. An inverted cone-shaped combustion platform is arranged at the bottom of the furnace body and directly above the combustion port, and a combustion groove is opened on the top of the inverted cone-shaped combustion platform. Then, a ring-shaped shield is used to guide the flame toward the top of the inverted cone-shaped combustion platform. Then, a cone-shaped cover and a leak hole on the top of the cone-shaped cover are used to make sulfur fall evenly into the combustion groove. When the sulfur raw material passes through the cone-shaped cover and falls onto the top of the inverted cone-shaped combustion platform, the inverted cone-shaped combustion platform and the cone-shaped cover are heated to a high temperature state, so that the solid raw material can be directly heated to a liquid state, and then a combustion reaction is carried out, thereby increasing the functionality of the device, improving the rate of sulfur dioxide preparation, and having higher practicality.

[0026] By arranging a dust removal mechanism composed of a gear ring, a scraper, a first motor, and a driving gear inside the furnace body, the carbon black generated by combustion at the bottom of the inverted cone combustion table can be removed during use to ensure the heat conduction effect of the inverted cone combustion table. When used in conjunction with a collecting mechanism composed of a receiving hopper and an ash discharge pipe, the discharge of carbon black is more convenient.

[0027] The unloading mechanism composed of a conveying pipe, a spiral conveying rod, a transmission bin, a second motor, a shaft, a first bevel gear, a second bevel gear, a crushing bin, a moving cone, a discharge pipe, and a temporary storage barrel can directly crush and convey blocky raw materials during use, thereby increasing the reactivity of the raw materials. A temporary storage barrel is provided on the top of the crushing bin to store the raw materials. The waste heat recovery mechanism composed of the first outer sleeve, the second outer sleeve, the first circulation pipe, a fan, the second circulation pipe, a heat conducting sheet, and spiral blades can recycle the waste heat in the gas, preheat the raw materials, and reduce the energy consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front cross-sectional view of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0029] Figure 2 It is a structural diagram of an inverted cone combustion table of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0030] Figure 3 A preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention Figure 1 Enlarged view of point A in the middle;

[0031] Figure 4 A cleaning mechanism diagram of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0032] Figure 5 A diagram of a material unloading mechanism in a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0033] Figure 6 It is a partial structural diagram of the furnace top of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0034] Figure 7 It is a top view of a waste heat recovery mechanism of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention;

[0035] Figure 8 It is a front view of a preferred embodiment of a sulfur dioxide preparation device and preparation process of the present invention.

[0036] In the figure: 1, furnace body; 2, combustion port; 3, burner; 4, inverted cone combustion platform; 5, combustion groove; 6, annular shield; 7, arc guide groove; 8, cone cover; 9, leakage hole; 10, unloading mechanism; 11, exhaust port; 12, cleaning mechanism; 13, collecting mechanism; 14, waste heat recovery mechanism; 15, cross bar; 16, vertical bar; 17, gear ring; 18, scraper; 19, first motor; 20, driving gear; 21, receiving hopper; 2 2. Ash discharge pipe; 23. Partition; 24. Conveying pipe; 25. Screw conveying rod; 26. Transmission bin; 27. Second motor; 28. Shaft; 29. ​​First bevel gear; 30. Second bevel gear; 31. Crushing bin; 32. Moving cone; 33. Discharge pipe; 34. Temporary storage cylinder; 35. First outer sleeve; 36. Second outer sleeve; 37. First circulation pipe; 38. Fan; 39. Second circulation pipe; 40. Heat conducting sheet; 41. Spiral blade. DETAILED DESCRIPTION

[0037] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0038] like Figure 1-Figure 8 As shown, this embodiment provides a sulfur dioxide preparation device, including a furnace body 1 and an exhaust port 11 opened on the top of the furnace body 1, a funnel-shaped combustion port 2 is opened in the middle position of the bottom of the furnace body 1, a burner 3 is installed at the bottom end of the combustion port 2, an inverted cone combustion table 4 is arranged at the bottom of the furnace body 1 and above the combustion port 2, a combustion groove 5 is opened on the top of the inverted cone combustion table 4, an annular shield plate 6 is fixed at the middle position inside the furnace body 1, an arc guide groove 7 is opened at the bottom of the annular shield plate 6, a conical cover 8 is fixed at the middle position of the inner side of the annular shield plate 6, leakage holes 9 are evenly opened on the surface of the conical cover 8, a feeding mechanism 10 for discharging materials from directly above the conical cover 8 is provided at the top of the outer side of the furnace body 1, a cleaning mechanism 12 is provided on the outer side of the inverted cone combustion table 4, and a collecting mechanism 13 is provided at the bottom end of the inverted cone combustion table 4.

[0039] The overall working principle: during preparation, first start the burner 3 to preheat the inverted cone combustion table 4 and the interior of the furnace body 1, and then discharge the sulfur into the interior of the furnace body 1 through the feeding mechanism 10. The sulfur falls to the top of the cone cover 8 and then diffuses outward along the outer side of the cone cover 8. During the falling process, it falls from the inside of the leak hole 9. Since the cone cover 8 is preheated inside the furnace body 1, the sulfur is initially melted after falling to the top of the cone cover 8. After the sulfur falls to the top of the inverted cone combustion table 4, it is liquefied again and then ignited by the flame discharged from the burner 3. The sulfur undergoes a violent oxidation reaction with oxygen in the furnace body 1, releasing a large amount of heat energy and sulfur dioxide gas.

[0040] In this embodiment, partitions 23 are evenly fixed inside the combustion groove 5, and the ends of the partitions 23 are connected to each other in a cross shape.

[0041] Local working principle: After sulfur falls into the combustion tank 5, it is separated by the partition 23. The existence of the partition 23 can increase the contact area between the sulfur and the sulfur, so that the sulfur can be melted quickly.

[0042] In this embodiment, a cross bar 15 is fixed at the middle position of the bottom end of the furnace body 1 and above the combustion port 2, a vertical bar 16 is vertically fixed at the middle position of the cross bar 15, and the top of the vertical bar 16 is fixedly connected to the middle position of the bottom end of the inverted cone combustion table 4.

[0043] Partial working principle: The inverted cone combustion platform 4 is supported vertically by the cooperation between the horizontal rod 15 and the vertical rod 16, so as to ensure the stable installation of the inverted cone combustion platform 4.

[0044] In this embodiment, the cleaning mechanism 12 includes a gear ring 17, a scraper 18, a first motor 19 and a driving gear 20. The gear ring 17 is rotatably mounted on the inner wall of the furnace body 1, and the gear ring 17 is located below the annular shield 6. The inner wall of the furnace body 1 is circumferentially provided with an annular groove that cooperates with the gear ring 17. The gear ring 17 is located inside the annular groove. The scraper 18 that fits the surface of the inverted cone combustion table 4 is symmetrically arranged on the inner side of the gear ring 17. The first motor 19 is installed on the outer side of the furnace body 1, and the output end of the first motor 19 is installed with a driving gear 20 that meshes with the outer side of the gear ring 17.

[0045] Local working principle: After long-term use, carbon black is easily generated on the surface of the inverted conical combustion table 4. In order to ensure the heat conduction effect of the inverted conical combustion table 4, the first motor 19 is started to drive the gear ring 17 to rotate, and the gear ring 17 controls the scraper 18 to rotate. The scraper 18 slides on the inner wall of the inverted conical combustion table 4 to scrape the carbon black into the collection mechanism 13 for storage.

[0046] In this embodiment, the collecting mechanism 13 includes a material receiving hopper 21 and an ash discharge pipe 22. The material receiving hopper 21 is fixed at the top of the cross bar 15 and is located directly below the inverted cone combustion table 4. The bottom end of the material receiving hopper 21 is fixed with an ash discharge pipe 22 extending to the outside of the furnace body 1. The scraper 18 is L-shaped, and the bottom end of the scraper 18 is located inside the material receiving hopper 21.

[0047] Local working principle: After the carbon black is scraped off by the scraper 18, the carbon black falls inside the L-shaped scraper 18, slides downward and then falls into the receiving hopper 21. After a certain amount is stored inside the receiving hopper 21, the ash discharge pipe 22 is opened to discharge the accumulated carbon black.

[0048] In this embodiment, the unloading mechanism 10 includes a conveying pipe 24, a spiral conveying rod 25, a driving assembly and a feeding assembly. The conveying pipe 24 is vertically fixed on the inner wall of the furnace body 1, and the discharge port at the end of the conveying pipe 24 is located directly above the conical cover 8. The spiral conveying rod 25 is rotatably installed inside the conveying pipe 24, and the end of the conveying pipe 24 is located outside the furnace body 1 and is provided with a driving assembly, and a feeding assembly is provided above the end of the conveying pipe 24.

[0049] Partial working principle: When the sulfur raw material is fed, the sulfur raw material enters the interior of the conveying pipe 24 through the feeding assembly, and then the driving assembly drives the spiral conveying rod 25 to rotate, pushing the raw material inside the conveying pipe 24 out to feed the device.

[0050] In this embodiment, the driving assembly includes a transmission bin 26, a second motor 27, a shaft 28 and a first bevel gear 29. The transmission bin 26 is fixed to the outer end of the conveying pipe 24. The second motor 27 is installed at the bottom end of the transmission bin 26. The output end of the second motor 27 is installed with a shaft 28. The shaft 28 passes through the transmission bin 26. The first bevel gear 29 is installed at the bottom end of the shaft 28 and located inside the transmission bin 26. One end of the spiral conveying rod 25 extends to the interior of the transmission bin 26. The end of the spiral conveying rod 25 located inside the transmission bin 26 is installed with a second bevel gear 30 meshing with the first bevel gear 29.

[0051] Partial working principle: When sulfur is unloaded, the second motor 27 is started to drive the shaft 28 to rotate. The rotation of the shaft 28 drives the first bevel gear 29 and the second bevel gear 30 to rotate. The second bevel gear 30 drives the spiral conveying rod 25 to rotate to complete the conveying operation.

[0052] In this embodiment, the feeding assembly includes a crushing bin 31, a moving cone 32, a discharge pipe 33 and a temporary storage tube 34. The crushing bin 31 is fixed on the top of the transmission bin 26. The discharge pipe 33 is provided between the bottom of the outer side of the crushing bin 31 and the conveying pipe 24. The shaft 28 extends to the interior of the crushing bin 31. The moving cone 32 is fixed to the top of the shaft 28. The top of the crushing bin 31 is provided with a temporary storage tube 34. A waste heat recovery mechanism 14 is provided between the outer side of the temporary storage tube 34 and the exhaust port 11.

[0053] Local working principle: sulfur raw materials are placed in the temporary storage tube 34 for storage, and the raw materials can be preheated by the waste heat recovery mechanism 14. The rotation of the shaft 28 will drive the movable cone 32 to rotate, and the rotation of the movable cone 32 will drive the sulfur to rotate. The sulfur rubs against the inner wall of the crushing bin 31 to crush the sulfur, which is similar to the working principle of the existing gyratory crusher. Therefore, this application will not go into details. The crushed sulfur flows into the interior of the conveying pipe 24 through the discharge pipe 33.

[0054] In this embodiment, the waste heat recovery mechanism 14 includes a first outer sleeve 35, a second outer sleeve 36, a first circulation pipe 37, a fan 38, a second circulation pipe 39, a heat conductive sheet 40 and a spiral blade 41. The first outer sleeve 35 is sleeved on the outside of the exhaust port 11, and the second outer sleeve 36 is sleeved on the outside of the temporary storage tube 34. The first circulation pipe 37 is fixed between the first outer sleeve 35 and the second outer sleeve 36, and the fan 38 is installed on the first circulation pipe 37. The second circulation pipe 39 is installed between the first outer sleeve 35 and the side of the second outer sleeve 36 away from the first circulation pipe 37. A spiral blade 41 is provided between the inner side of the second outer sleeve 36 and the crushing bin 31, and the heat conductive sheet 40 extending to the inside of the first outer sleeve 35 is evenly fixed on the inner wall of the exhaust port 11.

[0055] Local working principle: Sulfur also releases a large amount of heat during the reaction process, so the sulfur dioxide gas has a higher temperature when it is discharged through the exhaust port 11. At this time, the fan 38 starts to transport the heat in the sulfur dioxide gas toward the outside of the temporary storage tube 34. The heat is preheated to the sulfur inside the temporary storage tube 34 through contact transfer. The heat conductive sheet 40 inside the first outer sleeve 35 can improve the heat transfer effect, and the spiral blades 41 inside the second outer sleeve 36 increase the residence time of the gas outside the temporary storage tube 34, thereby improving the preheating effect on the sulfur.

[0056] like Figure 1-Figure 8 As shown, this embodiment provides a sulfur dioxide preparation process as follows:

[0057] Step 1: Ignite the burner 3, the flame heats the inverted cone combustion platform 4, and spreads upward along the surface of the inverted cone combustion platform 4, and then guides through the inside of the arc guide groove 7 to burn the inside of the combustion groove 5, and the surface temperature of the cone cover 8 rises with the increase of the temperature inside the furnace body 1;

[0058] Step 2: solid sulfur is put into the temporary storage tube 34. Since the exhaust port 11 discharges high-temperature gas, the fan 38 is started to transfer the heat in the gas to the outside of the temporary storage tube 34 to preheat the raw materials inside the temporary storage tube 34.

[0059] Step 3: Start the second motor 27 to drive the moving cone 32 inside the crushing bin 31 and the spiral conveying rod 25 inside the conveying pipe 24 to rotate simultaneously, the moving cone 32 crushes the sulfur and injects it into the conveying pipe 24 through the discharge pipe 33, the sulfur powder inside the conveying pipe 24 is transported toward the inside of the furnace body 1 through the rotation of the spiral conveying rod 25, and is dropped from the top of the conical cover 8;

[0060] Step 4: The sulfur falls onto the surface of the high-temperature conical cover 8 and is initially liquefied, and then falls evenly from the leak hole 9 to the inside of the combustion tank 5. Since the inverted conical combustion table 4 has a high temperature, the sulfur can be liquefied again. Since the flame can be guided to the inside of the combustion tank 5, the sulfur is ignited, and the combustion generates sulfur dioxide gas and is discharged from the inside of the exhaust port 11;

[0061] Step 5: When the burner 3 is ignited, if the combustion is not complete, carbon black may be produced on the surface of the inverted conical combustion table 4. In order to ensure the heat conduction effect of the inverted conical combustion table 4, the first motor 19 is started to control the gear ring 17 to drive the scraper 18 to rotate, and the carbon black on the surface of the inverted conical combustion table 4 is scraped off. The carbon black falls onto the L-shaped scraper 18 and slides downward to the inside of the receiving hopper 21 and is stored. Finally, the ash discharge pipe 22 is opened to discharge and clean the carbon black.

[0062] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A sulfur dioxide production device, comprising a furnace body (1) and an exhaust port (11) opened at the top of the furnace body (1), characterized in that: A funnel-shaped combustion port (2) is provided at the middle position of the bottom of the furnace body (1), a burner (3) is installed at the bottom end of the combustion port (2), an inverted cone-shaped combustion platform (4) is provided at the bottom of the furnace body (1) and above the combustion port (2), a combustion groove (5) is provided at the top of the inverted cone-shaped combustion platform (4), an annular shield (6) is fixed at the middle position inside the furnace body (1), an arc-shaped guide groove (7) is provided at the bottom of the annular shield (6), a conical cover (8) is fixed at the middle position of the inner side of the annular shield (6), leakage holes (9) are evenly provided on the surface of the conical cover (8), a material discharge mechanism (10) for discharging materials from directly above the conical cover (8) is provided at the top of the outer side of the furnace body (1), a cleaning mechanism (12) is provided at the outer side of the inverted cone-shaped combustion platform (4), and a collecting mechanism (13) is provided at the bottom end of the inverted cone-shaped combustion platform (4).

2. A sulfur dioxide production device according to claim 1, characterized in that: Partition plates (23) are evenly fixed inside the combustion groove (5), and the ends of the partition plates (23) are connected to each other in a cross shape.

3. A sulfur dioxide production device according to claim 1, characterized in that: A cross bar (15) is fixed at the middle position of the bottom end of the furnace body (1) and above the combustion port (2), a vertical bar (16) is vertically fixed at the middle position of the cross bar (15), and the top of the vertical bar (16) is fixedly connected to the middle position of the bottom end of the inverted cone combustion platform (4).

4. A sulfur dioxide production device according to claim 3, characterized in that: The cleaning mechanism (12) comprises a gear ring (17), a scraper (18), a first motor (19) and a driving gear (20); the gear ring (17) is rotatably mounted on the inner wall of the furnace body (1), and the gear ring (17) is located below the annular shielding plate (6); an annular groove cooperating with the gear ring (17) is opened along the circumferential direction on the inner wall of the furnace body (1); the gear ring (17) is located inside the annular groove; the scraper (18) cooperating with the surface of the inverted cone combustion platform (4) is symmetrically arranged on the inner side of the gear ring (17); the first motor (19) is mounted on the outer side of the furnace body (1); and the driving gear (20) meshing with the outer side of the gear ring (17) is mounted on the output end of the first motor (19).

5. A sulfur dioxide production device according to claim 4, characterized in that: The collecting mechanism (13) comprises a receiving hopper (21) and an ash discharge pipe (22); the receiving hopper (21) is fixed on the top of the cross bar (15) and is located directly below the inverted cone-shaped combustion platform (4); an ash discharge pipe (22) extending to the outside of the furnace body (1) is fixed at the bottom end of the receiving hopper (21); the scraper (18) is L-shaped, and the bottom end of the scraper (18) is located inside the receiving hopper (21).

6. A sulfur dioxide production device according to any one of claims 1 to 5, characterized in that: The unloading mechanism (10) comprises a conveying pipe (24), a spiral conveying rod (25), a driving assembly and a feeding assembly. The conveying pipe (24) is vertically fixed on the inner wall of the furnace body (1), and the discharge port at the end of the conveying pipe (24) is located directly above the conical cover (8). The spiral conveying rod (25) is rotatably installed inside the conveying pipe (24). The end of the conveying pipe (24) is provided with a driving assembly and is located outside the furnace body (1). The feeding assembly is provided above the end of the conveying pipe (24).

7. A sulfur dioxide production device according to claim 6, characterized in that: The driving assembly comprises a transmission chamber (26), a second motor (27), a shaft (28) and a first bevel gear (29); the transmission chamber (26) is fixed to the outer end of the conveying pipe (24); the second motor (27) is installed at the bottom end of the transmission chamber (26); the shaft (28) is installed at the output end of the second motor (27); the shaft (28) passes through the transmission chamber (26); the first bevel gear (29) is installed at the bottom end of the shaft (28) and located inside the transmission chamber (26); one end of the spiral conveying rod (25) extends into the interior of the transmission chamber (26); and the second bevel gear (30) meshing with the first bevel gear (29) is installed at one end of the spiral conveying rod (25) located inside the transmission chamber (26).

8. A sulfur dioxide production device according to claim 7, characterized in that: The feeding assembly comprises a crushing bin (31), a moving cone (32), a discharge pipe (33) and a temporary storage tube (34); the crushing bin (31) is fixed on the top of a transmission bin (26); a discharge pipe (33) is provided between the bottom of the outer side of the crushing bin (31) and the conveying tube (24); a shaft (28) extends into the interior of the crushing bin (31); a moving cone (32) is fixed on the top of the shaft (28); a temporary storage tube (34) is provided on the top of the crushing bin (31); and a waste heat recovery mechanism (14) is provided between the outer side of the temporary storage tube (34) and the exhaust port (11).

9. A sulfur dioxide production device according to claim 8, characterized in that: The waste heat recovery mechanism (14) comprises a first outer sleeve (35), a second outer sleeve (36), a first circulation pipe (37), a fan (38), a second circulation pipe (39), a heat conducting sheet (40) and a spiral blade (41). The first outer sleeve (35) is sleeved on the outside of the exhaust port (11), the second outer sleeve (36) is sleeved on the outside of the temporary storage tube (34), the first circulation pipe (37) is fixed between the first outer sleeve (35) and the second outer sleeve (36), the fan (38) is installed on the first circulation pipe (37), the second circulation pipe (39) is installed between the first outer sleeve (35) and the side of the second outer sleeve (36) away from the first circulation pipe (37), the spiral blade (41) is provided between the inner side of the second outer sleeve (36) and the crushing bin (31), and the heat conducting sheet (40) extending to the inside of the first outer sleeve (35) is evenly fixed on the inner wall of the exhaust port (11).

10. A sulfur dioxide production process, based on a sulfur dioxide production device according to claim 9, characterized in that: The steps include: Step 1: The burner (3) is ignited, and the flame heats the inverted cone combustion platform (4), and spreads upward along the surface of the inverted cone combustion platform (4), and then is guided through the inside of the arc-shaped guide groove (7) to burn the inside of the combustion groove (5), and the surface temperature of the cone cover (8) increases with the increase of the internal temperature of the furnace body (1); Step 2: solid sulfur is put into the temporary storage tube (34). Since the exhaust port (11) discharges high-temperature gas, the fan (38) is started to transfer the heat in the gas to the outside of the temporary storage tube (34), thereby preheating the raw materials inside the temporary storage tube (34); Step 3: Start the second motor (27) to drive the moving cone (32) inside the crushing bin (31) and the spiral conveying rod (25) inside the conveying pipe (24) to rotate simultaneously, the moving cone (32) crushes the sulfur and injects it into the conveying pipe (24) through the discharge pipe (33), the sulfur powder inside the conveying pipe (24) is transported toward the inside of the furnace body (1) through the rotation of the spiral conveying rod (25), and is dropped from the top of the conical cover (8); Step 4: The sulfur falls onto the surface of the high-temperature conical cover (8) and is initially liquefied, and then falls evenly from the leak hole (9) into the interior of the combustion tank (5). Since the inverted conical combustion table (4) has a high temperature, the sulfur can be liquefied again. Since the flame can be guided into the interior of the combustion tank (5), the sulfur is ignited, and the sulfur dioxide gas is generated by combustion and discharged from the interior of the exhaust port (11); Step 5: When the burner (3) is ignited, if the combustion is not complete, carbon black may be generated on the surface of the inverted conical combustion table (4). In order to ensure the heat conduction effect of the inverted conical combustion table (4), the first motor (19) is started to control the gear ring (17) to drive the scraper (18) to rotate, so as to scrape off the carbon black on the surface of the inverted conical combustion table (4). The carbon black falls onto the L-shaped scraper (18) and slides downward to the inside of the receiving hopper (21) and is stored. Finally, the ash discharge pipe (22) is opened to discharge and clean the carbon black.

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