Sulfur paste melting refining equipment and forming process

Abstract

The invention relates to the related technical field of sulfur refining, and discloses sulfur paste melting refining equipment and a forming technology.The sulfur paste melting refining equipment comprises a base, a supporting rod is fixedly connected to the base, a melting furnace is fixedly connected to the supporting rod, an eddy current coil is installed on the outer wall of the melting furnace, and a first sliding sealing seat is fixedly connected to the bottom of the melting furnace; an impurity outlet pipe is slidably connected into the first sliding sealing seat, a second sliding sealing seat is fixedly connected to the bottom of the impurity outlet pipe, a connecting rod is slidably connected into the second sliding sealing seat, a needle valve is fixedly connected to the top of the impurity outlet pipe, and a valve element of the needle valve is fixedly connected to the connecting rod. The sulfur paste is subjected to impurity removal, degassing, cooling and granulation forming in a mode of melting the sulfur paste, the refining speed is high, the efficiency is high, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to sulfur refining, and specifically to a sulfur paste melting and refining device and a forming process. Background Art

[0002] Sulfur minerals in China are extremely scarce. The pure sulfur necessary for industries such as rubber and compound fertilizers mainly relies on imports. From 2015 to 2017, about 11 million tons of sulfur were imported annually across the country, about 5 million tons were domestically produced, and the annual domestic demand was about 18 million tons. Many coal chemical plants in China (including fertilizer plants, coking plants, new coal chemical plants, etc.), thermal power plants, and non-ferrous metal smelting plants are equipped with sulfur recovery devices, which produce small and scattered amounts of crude sulfur, but the total amount is extremely large. The sulfur content is between 50% and 98%, the impurity content is high, and the impurity components are complex. It cannot be directly used in production and has not been effectively utilized and disposed of. During the stacking process, it is extremely easy to cause serious environmental pollution.

[0003] Previous purification methods such as the "heaven and earth pot" boiling method have been gradually phased out due to serious pollution and low purity. There are also methods to purify sulfur by melting, vaporization, and vacuum distillation. The disadvantages of these methods for purifying sulfur are that the processes of melting sulfur, vaporization, and vacuum distillation take a long time, consume high energy, and the efficiency of separating organic substances is unstable; when a continuous production process is used for sulfur paste with low purification degree, the quality of the extracted sulfur product is even worse. Summary of the Invention

[0004] The purpose of the present invention is to provide a sulfur paste melting and refining device and a forming process to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A sulfur paste melting and refining device includes a base. A support rod is fixedly connected to the base, and a melting furnace is fixedly connected to the support rod. An eddy current coil is installed on the outer wall of the melting furnace. A first sliding seal seat is fixedly connected to the bottom of the melting furnace. An impurity discharge pipe is slidably connected in the first sliding seal seat. A second sliding seal seat is fixedly connected to the bottom of the impurity discharge pipe. A connecting rod is slidably connected in the second sliding seal seat. A needle valve is fixedly connected to the top of the impurity discharge pipe, and the valve core of the needle valve is fixedly connected to the connecting rod. A discharge port is provided on the outer wall of the melting furnace. One end of a discharge pipe is fixedly connected to the discharge port, and the other end of the discharge pipe is fixedly connected to a forming pipe. A control valve is arranged in the discharge pipe. A rotating shaft is rotatably connected in the forming pipe. A spiral guiding knife is fixedly connected to the top of the rotating shaft. A granulating disc is installed at the bottom of the forming pipe. An installation bolt is rotatably installed at the center of the granulating disc. The installation bolt is fixedly connected to the rotating shaft. An installation nut is threadedly connected to the installation bolt, and a granulating knife is fixedly connected to the installation nut. The granulating knife cooperates with the granulating disc. A cooling sleeve is installed on the outer wall of the forming pipe; An opening and closing control component is arranged between the impurity discharging pipe and the connecting rod for controlling the opening and closing of the needle valve; A height adjusting component is installed between the base and the impurity discharging pipe for adjusting the relative height of the impurity discharging pipe in the melting furnace; A degassing component is installed at the bottom of the melting furnace for injecting gas into the melting furnace.

[0006] As a further scheme of the present invention: heat dissipation fins fixedly connected to the outer wall of the forming pipe are arranged in the cooling sleeve, and a liquid guiding port is arranged in the cooling sleeve.

[0007] As a further scheme of the present invention: a water tank is arranged below the forming pipe, and cooling water is injected into the water tank.

[0008] As a further scheme of the present invention: a motor is fixedly connected to the top of the forming pipe, and the output shaft of the motor is fixedly connected to the rotating shaft.

[0009] As a further scheme of the present invention: the opening and closing control component includes a fixed seat fixedly connected to the outer wall of the impurity discharging pipe. The fixed seat is arranged at the bottom of the melting furnace. A fixed rod is fixedly connected to the fixed seat, a mounting seat is fixedly connected to the fixed rod, a telescopic rod is fixedly connected to the mounting seat, and the output end of the telescopic rod is fixedly connected to the connecting rod.

[0010] As a further scheme of the present invention: the height adjusting component includes a hydraulic pump fixedly connected to the base. A connecting seat is fixedly connected to the output shaft of the hydraulic pump, and the connecting seat is fixedly connected to the fixed rod.

[0011] As a still further scheme of the present invention: the degassing component includes multiple groups of connecting pipes fixedly connected to the bottom of the melting furnace. One end of the connecting pipe arranged in the melting furnace is fixedly connected with a one-way valve, and the end of the connecting pipe arranged outside the melting furnace is fixedly connected with an air inlet pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention removes impurities, degasses, cools, and granulates and forms the sulfur paste by melting the sulfur paste, with a fast refining rate and high efficiency, improving the practicability of the equipment. Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of a sulfur paste melting and refining device in the present invention.

[0014] Figure 2 It is a sectional view of a sulfur paste melting and refining device in the present invention.

[0015] Figure 3 It is a sectional view of a sulfur paste melting and refining device in the present invention.

[0016] Figure 4This is a cross-sectional view of a sulfur paste melting and refining device in the present invention.

[0017] Figure 5 It is Figure 4 a partial enlarged view of point A in

[0018] Figure 6 It is Figure 4 a partial enlarged view of point B in

[0019] In the figure: 1 - base, 2 - support rod, 3 - melting furnace, 4 - eddy current coil, 5 - first sliding seal seat, 6 - impurity discharge pipe, 7 - impurity discharge pipe, 8 - second sliding seal seat, 9 - connecting rod, 10 - needle valve, 11 - valve core, 12 - fixed seat, 13 - fixed rod, 14 - mounting seat, 15 - telescopic rod, 16 - hydraulic pump, 17 - connecting seat, 18 - intake pipe, 19 - connecting pipe, 20 - one-way valve, 21 - discharge port, 22 - discharge pipe, 23 - control valve, 24 - forming pipe, 25 - rotating shaft, 26 - spiral guiding blade, 27 - cooling sleeve, 28 - heat dissipation fin, 29 - mounting bolt, 30 - mounting nut, 31 - granulation disc, 32 - motor, 33 - granulation knife, 34 - liquid guiding port, 35 - water tank. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0021] In one case of this embodiment, refer to Figures 1 to 6, A sulfur paste melting and refining device and a forming process, including a base 1, a support rod 2 fixedly connected to the base 1, a melting furnace 3 fixedly connected to the support rod 2, an eddy current coil 4 installed on the outer wall of the melting furnace 3, a first sliding seal seat 5 fixedly connected to the bottom of the melting furnace 3, a waste discharge pipe 6 slidably connected in the first sliding seal seat 5, a second sliding seal seat 8 fixedly connected to the bottom of the waste discharge pipe 6, a discharge pipe 7 fixedly connected to the outer wall of the waste discharge pipe 6, a connecting rod 9 slidably connected in the second sliding seal seat 8, a needle valve 10 fixedly connected to the top of the waste discharge pipe 6, and a valve core 11 of the needle valve 10 fixedly connected to the connecting rod 9. An outlet 21 is provided on the outer wall of the melting furnace 3, one end of a discharge pipe 22 is fixedly connected to the outlet 21, the other end of the discharge pipe 22 is fixedly connected to a forming pipe 24, a control valve 23 is arranged in the discharge pipe 22, a rotating shaft 25 is rotatably connected in the forming pipe 24, a spiral guiding blade 26 is fixedly connected to the top of the rotating shaft 25, a granulating disc 30 is installed at the bottom of the forming pipe 24, a mounting bolt 28 is rotatably installed at the center of the granulating disc 30, the mounting bolt 28 is fixedly connected to the rotating shaft 25, a mounting nut 29 is threadedly connected to the mounting bolt 28, a granulating knife 32 is fixedly connected to the mounting nut 29, the granulating knife 32 cooperates with the granulating disc 30, a cooling sleeve 27 is installed on the outer wall of the forming pipe 24, heat dissipation fins 27 fixedly connected to the outer wall of the forming pipe 24 are arranged in the cooling sleeve 27, a liquid guiding port 33 is arranged in the cooling sleeve 27, a water tank 34 is arranged below the forming pipe 24, and cooling water is injected into the water tank 34; An opening and closing control component is arranged between the waste discharge pipe 6 and the connecting rod 9, a height adjusting component is installed between the base 1 and the waste discharge pipe 6, and a degassing component is installed at the bottom of the melting furnace 3, A motor 31 is fixedly connected to the top of the forming pipe 24, and an output shaft of the motor 31 is fixedly connected to the rotating shaft 25. First, the melting furnace 3 is electrically heated by the eddy current coil 4, and then the sulfur paste in the melting furnace 3 is heated and melted. At this time, the impurities in the melted sulfur paste will float to the surface of the melted sulfur paste. Then, the height adjusting component can drive the waste discharge pipe 6 to rise and fall in the melting furnace 3, so that the valve port of the needle valve 10 is slightly lower than the liquid level height of the sulfur paste in the melting furnace 3. Then, the opening of the needle valve 10 is controlled by the opening and closing control component. At this time, the impurities floating in the melting furnace 3 enter the waste discharge pipe 6 along the needle valve 10 and then flow into the discharge pipe 7, so as to discharge the impurities along the discharge pipe 7. Then, the closing of the needle valve 10 is controlled by the opening and closing control component, and the impurity removal can be completed. At the same time, gas can be blown into the melting furnace 3 through the degassing component, so that a large number of bubbles are generated in the sulfur paste, and then the gas in the sulfur paste is absorbed and discharged through the bubbles, so as to complete the degassing treatment of the sulfur paste; After the treatment is completed, the motor 31 can be used to drive the rotating shaft 25 to rotate. The rotating shaft 25 first drives the spiral guide knife 26 to rotate, and at the same time, the control valve 23 is opened. At this time, the molten sulfur paste in the melting furnace 3 flows into the forming tube 24 along the discharge pipe 22, and the rotating spiral guide knife 26 pushes the molten sulfur paste at a uniform speed, so that the molten sulfur paste is squeezed toward the granulating plate 30. In this process, the heat in the molten sulfur paste in the forming tube 24 is absorbed by the heat dissipation fins 27, and the heat is discharged through the liquid guide port 33. Coolant is circulated and injected into the cooling sleeve 27, and the heat absorbed by the heat dissipation fins 27 is then conducted away by the coolant, thereby achieving preliminary cooling of the molten sulfur paste in the molding tube 24, and then the granulating knife 32 is driven to rotate by the rotating shaft 25, and the granulating knife 32 cooperates with the granulating disk 30 to cut and granulate the molten sulfur paste extruded along the granulating disk 30, and the cut sulfur paste particles fall into the water tank 34, and then the heat of the sulfur particles is quickly absorbed by the cooling water in the water tank 34, thereby achieving cooling and molding of the sulfur paste.

[0022] In one case of this embodiment, see Figures 1 to 6 The opening and closing control component includes a fixed seat 12 fixedly connected to the outer wall of the impurity outlet pipe 6, the fixed seat 12 is arranged at the bottom of the melting furnace 3, a fixed rod 13 is fixedly connected to the fixed seat 12, a mounting seat 14 is fixedly connected to the fixed rod 13, a telescopic rod 15 is fixedly connected to the mounting seat 14, and an output end of the telescopic rod 15 is fixedly connected to the connecting rod 9. The opening and closing component drives the connecting rod 9 to extend and retract through the extension of the telescopic rod 15, and the connecting rod 9 drives the valve core 11 to extend and retract in the needle valve 10, thereby realizing the control of the opening and closing of the needle valve 10.

[0023] In one case of this embodiment, see Figures 1 to 6 The height adjustment component includes a hydraulic pump 16 fixedly connected to the base 1, and a connecting seat 17 is fixedly connected to the output shaft of the hydraulic pump 16. The connecting seat 17 is fixedly connected to the fixed rod 13. The height adjustment component drives the connecting seat 17 to rise and fall through the hydraulic pump 16, and the connecting seat 17 drives the fixed seat 12 to rise and fall through the fixed rod 13. The fixed seat 12 drives the outlet pipe 6 to slide and rise in the melting furnace 3, thereby sliding and adjusting the relative height of the needle valve 10 in the melting furnace 3, and then adaptively adjusting the relative height of the needle valve 10 according to the liquid level of the sulfur paste in the melting furnace 3.

[0024] In one case of this embodiment, see Figures 1 to 6, the degassing assembly includes multiple groups of connecting pipes 19 fixedly connected to the bottom of the melting furnace 3. One end of the connecting pipe 19 disposed inside the melting furnace 3 is fixedly connected with a check valve 20, and one end of the connecting pipe 19 disposed outside the melting furnace 3 is fixedly connected with an intake pipe 18. The degassing assembly injects degassing gas into the multiple groups of connecting pipes 19 through the intake pipe 18. At this time, the gas pressure in the connecting pipe 19 increases, and the pressure difference pushes the check valve 20 to open. At this time, the degassing gas enters the sulfur paste along the check valve 20, so that a large number of bubbles are generated in the sulfur paste, and then the gas in the sulfur paste is absorbed by the bubbles and discharged.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sulfur paste melting and refining device, comprising a base, characterized in that, A support rod is fixedly connected to the base, a melting furnace is fixedly connected to the support rod, an eddy current coil is installed on the outer wall of the melting furnace, a first sliding seal seat is fixedly connected to the bottom of the melting furnace, a slag discharge pipe is slidably connected in the first sliding seal seat, a second sliding seal seat is fixedly connected to the bottom of the slag discharge pipe, a connecting rod is slidably connected in the second sliding seal seat, a needle valve is fixedly connected to the top of the slag discharge pipe, and the valve core of the needle valve is fixedly connected to the connecting rod. An outlet is arranged on the outer wall of the melting furnace, one end of a discharge pipe is fixedly connected to the outlet, the other end of the discharge pipe is fixedly connected to a forming pipe, a control valve is arranged in the discharge pipe, a rotating shaft is rotatably connected in the forming pipe, a spiral guiding blade is fixedly connected to the top of the rotating shaft, a granulating disc is installed at the bottom of the forming pipe, a mounting bolt is rotatably installed at the center of the granulating disc, the mounting bolt is fixedly connected to the rotating shaft, a mounting nut is threadedly connected to the mounting bolt, a granulating knife is fixedly connected to the mounting nut, the granulating knife cooperates with the granulating disc, and a cooling sleeve is installed on the outer wall of the forming pipe; An opening and closing control component is arranged between the slag discharge pipe and the connecting rod for controlling the opening and closing of the needle valve; A height adjustment component is installed between the base and the slag discharge pipe for adjusting the relative height of the slag discharge pipe in the melting furnace; A degassing component is installed at the bottom of the melting furnace for blowing gas into the melting furnace.

2. The sulfur paste melting and refining equipment according to claim 1, characterized in that Radiating fins fixedly connected to the outer wall of the forming pipe are arranged in the cooling sleeve, and a liquid guiding port is arranged in the cooling sleeve.

3. The sulfur paste melting and refining equipment according to claim 1, characterized in that, A water tank is arranged below the forming pipe, and cooling water is injected into the water tank.

4. A sulfur paste melting and refining device according to claim 1, characterized in that, A motor is fixedly connected to the top of the forming pipe, and the output shaft of the motor is fixedly connected to the rotating shaft.

5. The sulfur paste melting and refining equipment according to claim 1, characterized in that, The opening and closing control component includes a fixed seat fixedly connected to the outer wall of the slag discharge pipe, the fixed seat is arranged at the bottom of the melting furnace, a fixed rod is fixedly connected to the fixed seat, a mounting seat is fixedly connected to the fixed rod, a telescopic rod is fixedly connected to the mounting seat, and the output end of the telescopic rod is fixedly connected to the connecting rod.

6. The sulfur paste melting and refining equipment according to claim 5, characterized in that, The height adjustment component includes a hydraulic pump fixedly connected to the base, a connecting seat is fixedly connected to the output shaft of the hydraulic pump, and the connecting seat is fixedly connected to the fixed rod.

7. A sulfur paste melting and refining device according to claim 1, characterized in that, The degassing component includes a plurality of groups of connecting pipes fixedly connected to the bottom of the melting furnace, a check valve is fixedly connected to one end of the connecting pipe arranged in the melting furnace, and an air inlet pipe is fixedly connected to one end of the connecting pipe arranged outside the melting furnace.

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