Sulfur purification system

Abstract

The utility model relates to the technical field of sulfur purification processing, in particular to a sulfur purification system which is characterized by comprising a sulfur melting kettle, a heating kettle, an evaporation kettle, a condenser, a finished product material tank and a slicing machine which are sequentially connected through a connecting pipeline, electromagnetic heating devices are arranged on the outer sides of kettle bodies of the heating kettle and the evaporation kettle, each electromagnetic heating device comprises a first electromagnetic coil, a second electromagnetic coil and an adjusting mechanism, the first electromagnetic coil and the second electromagnetic coil are spirally arranged around the evaporation kettle, the first electromagnetic coil is located above the second electromagnetic coil, and the adjusting mechanism is located above the second electromagnetic coil. The first electromagnetic coil is arranged in an up-down floating adjusting manner through the adjusting mechanism, the second electromagnetic coil is fixedly arranged, and the first electromagnetic coil and the second electromagnetic coil are electrified to heat the kettle body, so that the material refining efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sulfur purification processing technical field, especially sulfur purification system. BACKGROUND

[0002] Important chemical raw materials such as sulfur have wide application in many fields such as agriculture, medicine, rubber, building, gunpowder, brewing and sugar making, with the development of global economy and the continuous expansion of chemical industry, the market demand for sulfur continues to grow, the traditional sulfur supply sources are mainly natural sulfur mine and by-products in the process of oil and natural gas exploitation, but the sulfur output of these sources is limited, which is difficult to meet the market demand, therefore, developing efficient sulfur refining process technology to extract sulfur from waste such as sulfur paste becomes an important way to meet market demand, with the continuous progress of science and technology, various new separation, purification technology and equipment emerge in an endless stream, which provides strong support for the development of sulfur refining process technology, for example, the research and application of heating, distillation, condensation and other equipment also help to improve the efficiency and quality of sulfur refining.

[0003] However, the applicant found that the prior art still has some deficiencies: when purifying crude sulfur produced in the field of chemical industry, the industry is basically based on molten sulfur kettle technology, which has the problems of high energy consumption of multiple heating solutions, difficulty in separating heavy salt from non-gasified sulfur, high organic matter content in products, poor color, low purity of sulfur products, etc., which is difficult to sell to downstream enterprises with high sulfur purity requirements, resulting in narrow application and low sales price, at the same time, with the increasing emphasis on environmental protection, the method commonly used to treat waste gas will cause huge environmental pollution hazards, which is not conducive to environmental protection. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model develops a sulfur purification system, which improves the evaporation kettle to solve the problem of difficult sulfur gasification during the existing sulfur purification, so that the sulfur liquid surface of the evaporation kettle is continuously concentrated and heated, the sulfur is rapidly gasified and evaporated, the purification efficiency of the sulfur is improved, and the energy consumption is reduced.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A sulfur purification system, comprising a molten sulfur kettle, a temperature rising kettle, an evaporation kettle, a condenser, a finished material tank and a slicing machine connected in sequence by connecting pipelines.

[0007] The molten sulfur kettle heats and melts the crude sulfur solid material to be purified to form a crude sulfur liquid.

[0008] The temperature rising kettle receives the crude sulfur liquid output by the molten sulfur kettle and heats and rises the temperature.

[0009] The evaporation kettle receives the sulfur liquid output by the heating kettle to heat and evaporate, forming sulfur gas;

[0010] The condenser receives the sulfur gas output by the evaporation kettle to cool and form refined liquid sulfur;

[0011] The finished material tank stores the refined liquid sulfur output by the condenser;

[0012] The slicing machine receives the refined liquid sulfur output by the finished material tank to evaporate, dry, and slice to form solid refined sulfur;

[0013] The kettle body of the heating kettle and the evaporation kettle is provided with an electromagnetic heating device, which includes a first electromagnetic coil, a second electromagnetic coil, and an adjusting mechanism. The first electromagnetic coil and the second electromagnetic coil are spirally arranged around the evaporation kettle, and the first electromagnetic coil is located above the second electromagnetic coil. The first electromagnetic coil is adjusted by the adjusting mechanism to float up and down, and the second electromagnetic coil is fixedly arranged. The first electromagnetic coil and the second electromagnetic coil are powered to heat the kettle body.

[0014] As an improvement, the adjusting mechanism includes a fixed seat, a sliding block, and a lifting module;

[0015] The fixed seat is fixedly arranged on the outer wall of the kettle body, and the fixed seat is symmetrically arranged with two groups;

[0016] The sliding block is arranged in two groups, and each sliding block is slidingly arranged in the corresponding groove of the fixed seat. A plurality of buckling grooves are formed on the sliding block, and each buckling groove corresponds to the number of spiral turns of the first electromagnetic coil.

[0017] The lifting module is provided with two groups, and each lifting module is arranged on the top of the corresponding fixed seat. The lifting module is connected to the corresponding sliding block, and the lifting module drives the sliding block to move up and down.

[0018] As an improvement, the lifting module includes a motor, a lead screw shaft, and a nut;

[0019] The motor is fixedly installed on the top of the fixed seat;

[0020] The lead screw shaft is coaxially fixedly connected to the motor, and the lead screw shaft is driven to rotate by the motor;

[0021] The nut is fixedly installed on the sliding block, and the nut is threadedly sleeved with the lead screw shaft.

[0022] As an improvement, the buckling groove is sleeved with a roller at the buckling position of the first electromagnetic coil.

[0023] As an improvement, the second electromagnetic coil is arranged around the kettle body through a connecting block, and a clamping groove corresponding to the second electromagnetic coil is formed in the connecting block.

[0024] As an improvement, the connecting block is mounted in the groove, and the connecting block is fixedly connected with the fixing seat through a threaded fastener.

[0025] As an improvement, the warming kettle and the evaporation kettle are provided with rotating stirring paddles.

[0026] As an improvement, an auxiliary gas stirring pipe is arranged in the evaporation kettle and extends from the top to the bottom, and the auxiliary gas stirring pipe is used for gas stirring of sulfur liquid in the evaporation kettle.

[0027] As an improvement, a plurality of evaporation pipes are arranged in the evaporation kettle, the evaporation pipes extend from the top of the evaporation kettle to the inside of the evaporation kettle, and the opening positions of the lower ends of the evaporation pipes are arranged in a stepped manner.

[0028] As an improvement, a washing tower is further included, and the washing tower is used for purifying tail gas generated in the heating process of the sulfur melting kettle, the warming kettle, the finished material tank and the slicing machine.

[0029] The sulfur purification system has the advantages that:

[0030] (1) The sulfur purification system improves the electromagnetic heating device of the warming kettle and the evaporation kettle, divides the electromagnetic coil in the electromagnetic heating device into a first electromagnetic coil and a second electromagnetic coil, simultaneously heats the first electromagnetic coil and the second electromagnetic coil, makes the temperature of the processed and refined material in the vertical direction more uniform, adjusts the horizontal height of the first electromagnetic coil, especially adjusts the horizontal height of the first electromagnetic coil according to the height of the sulfur liquid surface during sulfur evaporation, makes the sulfur gasification heat concentrated, and the gasification efficiency is high.

[0031] (2) The evaporation kettle is provided with a plurality of evaporation pipes, the opening positions of the bottoms of the evaporation pipes are located at different positions in the kettle, the steam generated at different positions in the material refining process is extracted to accelerate the refining, the long evaporation pipe can be deeply arranged in the area of the liquid, the steam concentration and the temperature of the area are relatively high, more high-purity and high-heat steam can be absorbed, the short evaporation pipe is arranged near the upper space of the container to absorb the steam, and the steam in the upper space can be fully contacted, so that the combination of the evaporation pipes with different lengths can increase the total contact area and the contact time of the steam and the evaporation pipes, the steam can be more fully collected and guided, and the refining speed is improved.

[0032] (3) The utility model discloses a auxiliary gas stirring pipe is arranged in the evaporation kettle, and the auxiliary gas stirring pipe is equipped with a plurality of air holes on the annular portion of the bottom of evaporation kettle, and the flowability of sulfur can be improved and the gasification and evaporation efficiency of sulfur can be improved through the gas stirring of the auxiliary gas stirring pipe in the gasification and evaporation process of evaporation kettle to sulfur due to the improvement of sulfur concentration and the gradual reduction of flowability.

[0033] (4) The utility model discloses still add washing tower, through washing tower can remove the pollutant and harmful substance in tail gas effectively, and the processing efficiency of various waste gas components is higher, effectively avoid the security risk that can produce in waste gas processing process, improve air quality simultaneously, reduce the health hazard to human body, protected the ecological environment, reduced the pollution to the environment.

[0034] In conclusion, the utility model has the advantages of fast purification efficiency, energy saving and environmental protection, low energy consumption, small environmental pollution and the like, and is especially suitable for the technical field of sulfur purification processing. ACCURACY OF DRAWINGS

[0035] Figure 1 It is the processing flow structure schematic diagram of the utility model;

[0036] Figure 2 It is the kettle body three-dimensional structure schematic diagram of the utility model;

[0037] Figure 3 It is the kettle body front view structure schematic diagram of the utility model;

[0038] Figure 4 It is the first electromagnetic ring amplification schematic of the utility model Figure 1 ;

[0039] Figure 5 It is the first electromagnetic ring amplification schematic of the utility model Figure 2 ;

[0040] Figure 6 It is the second electromagnetic ring amplification schematic of the utility model Figure 1 ;

[0041] Figure 7 It is the kettle body internal section structure schematic diagram of the utility model.

[0042] In the figure: 00. Kettle body, 1. Molten sulfur kettle, 2. Temperature rising kettle, 21. Stirring paddle, 3. Evaporation kettle, 31. Auxiliary gas stirring pipe, 32. Evaporation pipe, 321. First evaporation pipe, 322. Second evaporation pipe, 323. Third evaporation pipe, 4. Condenser, 5. Finished material tank, 6. Slicer, 7. Electromagnetic heating device, 71. First electromagnetic coil, 711. Roller, 72. Second electromagnetic coil, 721. Connecting block, 722. Clamping groove, 73. Adjusting mechanism, 731. Fixed seat, 7311. Groove, 732. Sliding block, 7321. Buckling groove, 733. Lifting module, 7331. Motor, 7332. Screw shaft, 7333. Nut, 8. Washing tower, 9. Heat conducting oil storage tank, 10. Gas pipe, 101. Air hole. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0046] Example 1:

[0047] As Figure 1 With Figure 7 As shown in the figure, a sulfur purification system, comprising a molten sulfur kettle 1, a temperature rising kettle 2, an evaporation kettle 3, a condenser 4, a finished material tank 5 and a slicing machine 6 connected in sequence through connecting pipes in order;

[0048] The melting sulfur pot 1 heats and melts the solid raw sulfur to be purified to form a raw sulfur liquid;

[0049] The heating pot 2 receives the raw sulfur liquid output by the melting sulfur pot 1 and heats and warms it;

[0050] The evaporation pot 3 receives the sulfur liquid output by the heating pot 2 and heats and evaporates it to form a sulfur gas;

[0051] The condenser 4 receives the sulfur gas output by the evaporation pot 3 and cools it to form a purified liquid fine sulfur;

[0052] The finished product material tank 5 stores the liquid fine sulfur output by the condenser 4;

[0053] The slicing machine 6 receives the liquid fine sulfur output by the finished product material tank 5, evaporates, dries, and slices it to form a solid fine sulfur;

[0054] The heating pot 2 and the evaporation pot 3 are provided with an electromagnetic heating device 7 outside the pot body 00, which includes a first electromagnetic coil 71, a second electromagnetic coil 72, and an adjusting mechanism 73. The first electromagnetic coil 71 and the second electromagnetic coil 72 are both spirally arranged around the evaporation pot 3, and the first electromagnetic coil 71 is located above the second electromagnetic coil 72. The first electromagnetic coil 71 is adjusted by the adjusting mechanism 73 to float up and down, and the second electromagnetic coil 72 is fixedly arranged. The first electromagnetic coil 71 and the second electromagnetic coil 72 are powered to heat the pot body 00.

[0055] The adjusting mechanism 73 includes a fixed seat 731, a sliding block 732, and a lifting module 733.

[0056] The fixed seat 731 is fixedly arranged on the outer wall of the pot body 00, and two groups of fixed seats 731 are symmetrically arranged.

[0057] The sliding block 732 is arranged in two groups, and each sliding block 732 is slidingly arranged in the corresponding groove 7311 of the fixed seat 731. A plurality of buckling grooves 7321 are formed on the sliding block 732, and each buckling groove 7321 corresponds to the number of turns of the first electromagnetic coil 71.

[0058] The lifting module 733 is provided in two groups, and each lifting module 733 is arranged on the top of the corresponding fixed seat 731. Each lifting module 733 is connected to the corresponding sliding block 732, and the lifting module 733 drives the sliding block 732 to ascend and descend.

[0059] The lifting module 733 includes a motor 7331, a screw shaft 7332, and a nut 7333.

[0060] The motor 7331 is fixedly installed on the top of the fixed seat 731.

[0061] The screw rod shaft 7332 is coaxially fixedly connected with the motor 7331, and the screw rod shaft 7332 is driven to rotate by the motor 7331.

[0062] The nut 7333 is fixedly installed on the sliding block 732, and the nut 7333 is in threaded sleeve setting with the screw rod shaft 7332.

[0063] The buckle groove 7321 is sleeved with the roller 711 at the buckle position of the first electromagnetic coil 71.

[0064] The second electromagnetic coil 72 is surrounded on the kettle body 00 through the connecting block 721, and the connecting block 721 is provided with the clamping groove 722 corresponding to the second electromagnetic coil 72.

[0065] The connecting block 721 is installed in the groove 7311, and the connecting block 721 is fixedly connected with the fixed seat 731 through a threaded fastener.

[0066] Specifically, the electromagnetic coil in the electromagnetic heating device 7 of the evaporation kettle is arranged in a split type, the first electromagnetic coil 71 located in the upper part can be automatically lifted along the height direction of the kettle body 00 through the setting of the adjusting mechanism 73, thereby adapting to the lifting of the liquid level in the kettle body 00, so that the first electromagnetic coil 71 can always heat around the liquid level position, especially when the sulfur in the evaporation kettle 3 is evaporated, the heat of the first electromagnetic coil 71 is concentrated at the liquid level position, and the sulfur gasification efficiency of the evaporation kettle 3 is improved.

[0067] And for the warming kettle 2, the first electromagnetic coil 71 can be moved and adjusted to concentrate heat on any position of the upper part of the kettle body 00, and the local temperature of the sulfur can be controlled and adjusted, and the adjustment ability is greatly improved.

[0068] The warming kettle 2 and the evaporation kettle 3 are provided with a rotating stirring paddle 21.

[0069] The auxiliary gas stirring pipe 31 is arranged from top to bottom in the evaporation kettle 3, and the auxiliary gas stirring pipe 31 stirs the sulfur liquid in the evaporation kettle 3.

[0070] It should be noted that: the stirring paddle 21 is used for stirring material setting, the auxiliary gas stirring pipe 31 is used for passing into gas to carry out gas stirring to the sulfur liquid in the evaporation kettle, and the flowability of the sulfur in the evaporation kettle is guaranteed, specifically, the auxiliary gas stirring pipe 31 is located in the kettle body 00 and is provided with an annular gas pipe 10 at the bottom, a plurality of gas holes 101 are arranged at the annular position of the bottom of the gas pipe 10, gas outside the gas holes 101 is input into the kettle body 00, and the sulfur liquid is continuously stirred by gas.

[0071] The evaporation kettle 3 is provided with a plurality of evaporation pipes 32, the evaporation pipes 32 are arranged to extend from the top of the evaporation kettle 3 to the inside of the evaporation kettle 3, and the opening position heights of the lower ends of the evaporation pipes 32 are arranged in a stepped manner.

[0072] It should be noted that: the vapor pipe 32 is provided with three groups, which are a first evaporation pipe 321, a second evaporation pipe 322 and a third evaporation pipe 323, the gases generated in different height regions in the kettle body 00 are collected and refined through the three groups of evaporation pipes with different lengths, and the refining efficiency of the materials is accelerated.

[0073] It also includes a washing tower 8, which is used for purifying the tail gas generated in the heating process of the sulfur melting kettle 1, the temperature rising kettle 2, the finished material tank 5 and the slicing machine 6.

[0074] It should be noted that the sulfur melting kettle 1, the condenser 4, the finished material tank 5 and the slicing machine 6 are all jacketed containers, and the heat conducting oil in the heat conducting oil storage tank 8 connected thereto is transmitted into the sulfur melting kettle 1, the condenser 4, the finished material tank 5 and the slicing machine 6, and the heat conducting oil is used for constant temperature control of the materials.

[0075] Among them, it should be noted that the slicing machine 6 is also called a slicing machine, and the slicing machine 6 in the utility model is a common slicing machine, mainly composed of a rotating drum, a scraper, a material tray and the like.

[0076] Further need to explain is that the difference between the heat conduction oil and water vapor: heat conduction oil has good thermal stability, can maintain stable performance at high temperature, is not easy to decompose or deteriorate, can realize high temperature transmission at low pressure. Its specific heat capacity is relatively small, the temperature rises fast, can quickly reach the required temperature, can reduce the energy loss in the heating process in the purification stage requiring frequent heating or temperature change, and can more accurately control the temperature, however, water vapor has high vaporization heat, can release a large amount of heat in the condensation process, can utilize this feature for efficient heat transfer and exchange, but has high pressure resistance requirement for the equipment, is easy to cause heat loss in the transmission process, which will cause energy waste, especially in the case of long distance transmission or poor insulation effect, which will cause energy waste. Water vapor needs to be condensed and recovered after use, otherwise it will cause double waste of water resources and energy, if the condensation recovery system is not perfect, the energy consumption will increase significantly, in general, the thermal efficiency of the heat conduction oil heating system is usually higher than that of the water vapor heating system, generally about 20%-30% higher.

[0077] In addition, it should be pointed out that the first electromagnetic coil 71 and the second electromagnetic coil 72 in the electromagnetic heating device 7 are provided with power supply structure and adjustment structure.

[0078] The power supply structure is composed of a power input unit, a rectifier circuit, a filter circuit and an inverter circuit. The power input unit is connected with the rectifier circuit, the rectifier circuit is connected with the filter circuit, the filter circuit is connected with the inverter circuit, and the inverter circuit is connected with the first electromagnetic coil and the second electromagnetic coil.

[0079] The power input unit inputs alternating current, the rectifier circuit converts the input alternating current into direct current, the filter circuit smooths the pulsating direct current after rectification, and the inverter circuit converts the direct current into high-frequency alternating current.

[0080] The adjustment structure is composed of a control circuit, a feedback circuit and a power regulation circuit. The control circuit includes a microcontroller (MCU) or a digital signal processor (DSP) and a drive circuit. The microcontroller (MCU) or the digital signal processor (DSP) is the core of the electromagnetic heating control system, which is responsible for receiving various input signals such as temperature set value, actual temperature feedback value, etc., performing operation and processing, and outputting control signal according to preset algorithm and logic to adjust the power and heating state of the electromagnetic heating coil. The drive circuit is connected with IGBT and other power switch devices, receives the control signal output by the microcontroller or digital signal processor, amplifies and converts it into a signal suitable for driving IGBT, controls the on and off time and frequency of IGBT, and thus adjusts the working state of the electromagnetic heating coil.

[0081] The feedback circuit comprises a temperature feedback circuit, a current feedback circuit and a voltage feedback circuit, the temperature feedback circuit monitors the temperature of the material in the stirred tank or the heating coil in real time through a temperature sensor, converts the temperature signal into an electric signal and feeds back to a microcontroller or a digital signal processor, the current feedback circuit is used for collecting the current signal in the electromagnetic heating coil and converting it into a suitable electric signal to feed back to the control circuit, and the voltage feedback circuit monitors and samples the input mains voltage or the high-frequency voltage output by the inverter circuit and feeds back the voltage signal to the control circuit.

[0082] The power regulating circuit comprises a pulse width modulation (PWM) circuit and a frequency regulating circuit, the pulse width modulation (PWM) circuit adjusts the on-time of the IGBT by changing the duty cycle of the output pulse signal, thereby controlling the average power of the electromagnetic heating coil, and the frequency regulating circuit adjusts the resonant frequency of the electromagnetic heating coil by changing the frequency of the high-frequency alternating current output by the inverter circuit, thereby realizing power regulation.

[0083] Working principle: the loaded material is transferred to the sulfur melting tank 1, the sulfur melting tank 1 is controlled at a constant temperature by the heat conducting oil, and the solid material is converted into liquid material, then the liquid material in the sulfur melting tank 1 is transferred to the temperature rising tank 2, the temperature rising tank 2 further heats and extracts the liquid material after the electromagnetic heat conducting device 7 is electrified, then the liquid material in the temperature rising tank 2 is transferred to the evaporation tank 3, the electromagnetic heat conducting device 7 in the evaporation tank 3 further heats, the processing is carried out through the automatic adjustment of the heating mode of the electromagnetic heat conducting device 7, the electromagnetic heating device 7 automatically adjusts the heating position according to the production condition inside the tank body 00, accurately and effectively controls the temperature, improves the efficiency of material extraction, then the material steam after heating is extracted through the evaporation pipe 32 and transferred to the condenser 4, the condenser 4 flows the heat conducting oil in the jacket of the condenser 4 to transfer the heat carried by itself to the material to be condensed, converts the steam material into liquid material, then the material is transferred to the finished material tank 5 through the condenser 4, the jacket of the finished material tank 5 is filled with heat conducting oil to control the temperature, then the material is transferred to the slicing machine 6 through the finished material tank 5, the slicing machine 6 also heats the material by filling the jacket with heat conducting oil, heats and extracts the liquid material into solid material, and finally cuts the material through the blade opening, and discharges the material after cutting.

[0084] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sulfur purification system, characterized in that: it comprises a melting sulfur still (1), a heating still (2), an evaporation still (3), a condenser (4), a finished material tank (5) and a slicing machine (6) connected in sequence through connecting pipes; the melting sulfur still (1) melts the solid crude sulfur to be purified to form a crude sulfur liquid; the heating still (2) receives the crude sulfur liquid output by the melting sulfur still (1) and heats it; the evaporation still (3) receives the sulfur liquid output by the heating still (2) and heats it to evaporate to form a sulfur gas; the condenser (4) receives the sulfur gas output by the evaporation still (3) and cools it to form a purified liquid fine sulfur; the finished material tank (5) stores the liquid fine sulfur output by the condenser (4); and the slicing machine (6) receives the liquid fine sulfur output by the finished material tank (5), evaporates, dries and slices it to form a solid fine sulfur; wherein the heating still (2) and the evaporation still (3) are each provided with an electromagnetic heating device (7) outside the kettle body (00), the electromagnetic heating device (7) comprises a first electromagnetic coil (71), a second electromagnetic coil (72) and an adjusting mechanism (73), the first electromagnetic coil (71) and the second electromagnetic coil (72) are each spirally arranged around the evaporation still (3), the first electromagnetic coil (71) is located above the second electromagnetic coil (72), the first electromagnetic coil (71) is adjusted to be set up and down by the adjusting mechanism (73), the second electromagnetic coil (72) is fixedly arranged, and the first electromagnetic coil (71) and the second electromagnetic coil (72) are powered to heat the kettle body (00).

2. The sulfur purification system according to claim 1, characterized in that: the adjusting mechanism (73) comprises a fixed seat (731), a sliding block (732) and a lifting module (733); the fixed seat (731) is fixedly arranged on the outer wall of the kettle body (00), and two groups of fixed seats (731) are symmetrically arranged; two groups of sliding blocks (732) are arranged, and each sliding block (732) is slidingly arranged in the corresponding recess (7311) of the fixed seat (731), and a plurality of buckling grooves (7321) are formed on the sliding block (732), and each buckling groove (7321) is in one-to-one correspondence with the number of spiral turns of the first electromagnetic coil (71); two groups of lifting modules (733) are arranged, and each lifting module (733) is arranged on the top of the corresponding fixed seat (731), and each lifting module (733) is connected with the corresponding sliding block (732), and the lifting module (733) drives the sliding block (732) to be arranged up and down.

3. The sulfur purification system according to claim 2, characterized in that: the lifting module (733) comprises a motor (7331), a screw shaft (7332) and a nut (7333); the motor (7331) is fixedly installed on the top of the fixed seat (731). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The screw rod shaft (7332) is coaxially fixedly connected with the motor (7331), and the screw rod shaft (7332) is driven to rotate by the motor (7331); The nut (7333) is fixedly installed on the sliding block (732), and the nut (7333) is in threaded sleeve cooperation with the screw rod shaft (7332).

4. The sulfur purification system according to claim 2, characterized in that: The buckle groove (7321) is sleeved with a roller (711) at the buckle position of the first electromagnetic coil (71).

5. The sulfur purification system according to claim 2, characterized in that: The second electromagnetic coil (72) is surrounded on the kettle body (00) through a connecting block (721), and the connecting block (721) is provided with a clamping groove (722) corresponding to the second electromagnetic coil (72) and clamped with the second electromagnetic coil (72); The connecting block (721) is installed in the groove (7311), and the connecting block (721) is fixedly connected with the fixed seat (731) through a threaded fastener.

6. The sulfur purification system according to claim 1, characterized in that: The temperature rising kettle (2) and the evaporation kettle (3) are provided with rotating stirring stirring paddles (21).

7. The sulfur purification system according to claim 1, characterized in that: The auxiliary gas stirring pipe (31) is provided in the evaporation kettle (3) from top to bottom, which gas stirs the sulfur liquid in the evaporation kettle (3).

8. The sulfur purification system according to claim 1, characterized in that: The evaporation kettle (3) is provided with a plurality of evaporation pipes (32), which are provided from the top of the evaporation kettle (3) to the inside of the evaporation kettle (3), and the opening position height of the lower end of the evaporation pipe (32) is stepped.

9. The sulfur purification system according to claim 1, characterized in that: It also includes a washing tower (8), which is used for purifying the tail gas generated in the heating process of the molten sulfur kettle (1), the temperature rising kettle (2), the finished material tank (5) and the slicing machine (6).

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