A device for recovering solid sulfur containing impurities

Abstract

The invention discloses a device for recovering solid sulfur containing impurities, belonging to the field of non-metallic elements. The device mainly comprises a sulfur melting device, a feeding device, and a filtering device. The sulfur melting devices are arranged in parallel and are used for heating and melting the solid sulfur containing impurities to make it liquid. The feeding device is used for feeding the multiple sulfur melting devices to facilitate continuous production. The liquid sulfur in the sulfur melting devices is sent to the filtering device for filtration and separation to remove impurities. The filtered liquid sulfur is sent to a liquid sulfur pool or a liquid sulfur storage device for subsequent treatment. The device is used to realize the feeding, sulfur melting, and filtration production processes in the process for recovering solid sulfur containing impurities.

Description

Technical Field

[0001] The present invention relates to the field of non-metallic elements, and in particular to a device for recovering solid sulfur containing impurities. Background Art

[0002] Refineries and coal chemical plants generate impure solid sulfur during their production processes. This is primarily generated through two main sources: 1. The production of impure solid sulfur during sulfur recovery equipment operation due to high levels of product impurities; and 2. Equipment droplets. One coal chemical plant generates 3-5 tons of impure solid sulfur per month during its production process. This impure solid sulfur cannot be sold due to substandard quality. As sulfur is a hazardous chemical, it requires dedicated warehouses for storage, tying up existing plant resources and severely impacting profitability. Therefore, effectively recovering impure solid sulfur has become a pressing issue for these plants.

[0003] In existing technology, some manufacturers use homemade recovery equipment to heat solid sulfur containing impurities, converting it into a liquid state. The liquid sulfur is then filtered through a filter structure to remove the solid impurities, thereby achieving sulfur recovery. For example, Chinese Patent Publication No. CN211946276U discloses a floor-mounted solid sulfur recovery device containing impurities; another example is Chinese Patent Publication No. CN208843733U, which discloses a solid sulfur liquefaction recovery device. Most of these existing technologies are small-scale devices with low processing efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a device for recovering solid sulfur containing impurities, so as to solve the problem of low efficiency of the existing recovery and treatment of solid sulfur containing impurities.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a device for recovering solid sulfur containing impurities, comprising:

[0006] The sulfur melting equipment is used to heat and melt solid sulfur containing impurities to turn it into liquid; multiple sulfur melting equipment are arranged side by side, including a horizontal sulfur melting tank with a heating device arranged on the outside of the sulfur melting tank; an upward-facing sulfur filling pipe is arranged at one end of the sulfur melting tank, and a first discharger is arranged on the top of the sulfur filling pipe; a liquid sulfur discharge pipe is arranged at the other end of the sulfur melting tank.

[0007] The feeding equipment is used to feed the sulfur melting equipment; a feeding platform is set on one side of the sulfur filling pipe of the sulfur melting equipment, and the feeding equipment includes a track and a feeding car set on the feeding platform; the feeding car moves along the track to one side of the feeding platform and adds materials through a spiral feeder; then it moves to the sulfur melting equipment that needs to be fed for feeding; the feeding car includes a frame, track wheels are set on both sides of the frame, and a funnel-shaped storage hopper is installed in the frame, the top of the storage hopper is open, and the bottom is closed by an openable discharge door; a feeding conduit is provided on the feeding platform, and the bottom of the feeding conduit is connected to the feed port of the first discharger of the sulfur melting tank.

[0008] The filtering equipment is used to filter the liquid sulfur melted by the sulfur melting equipment; the filtering equipment includes a filtering box, and the liquid sulfur discharge pipe is connected to the filtering box; a filtering structure is arranged inside the filtering box; a diversion pipe is arranged at the bottom of the filtering box, and the diversion pipe is connected to the liquid sulfur pool or liquid sulfur storage equipment.

[0009] The beneficial effects of the present invention are as follows: the present invention provides a device for recovering solid sulfur containing impurities, which mainly includes a sulfur melting device, a feeding device, and a filtering device; wherein a plurality of sulfur melting devices are arranged side by side and are used to heat and melt the solid sulfur containing impurities to make it liquid; the feeding device is used to feed the plurality of sulfur melting devices, which is convenient for continuous production; the liquid sulfur in the sulfur melting device is sent to the filtering device for filtering and separation to remove impurities; the filtered liquid sulfur is sent to a liquid sulfur pool or a liquid sulfur storage device for subsequent treatment; the recovery device of the present invention is used to realize the feeding, sulfur melting, and filtering production processes in the process for recovering solid sulfur containing impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure shows the three-dimensional structure of the recovery device provided in the embodiment of the present application. Figure 1 .

[0011] Figure 2 The figure shows the three-dimensional structure of the recovery device provided in the embodiment of the present application. Figure 2 .

[0012] Figure 3 Shown is a side view of the recovery device provided in an embodiment of the present application.

[0013] Figure 4 Shown is a diagram showing the appearance and structure of the sulfur melting equipment provided in an embodiment of the present application.

[0014] Figure 5 The figure shows the appearance and structure of the sulfur melting equipment provided in the embodiment of the present application. Figure 2 .

[0015] Figure 6 Shown is a structural diagram of the liquid sulfur discharge pipe in an embodiment of the present application.

[0016] Figure 7 Shown is a structural diagram of the improved sulfur melting tank provided in this application.

[0017] Figure 8 The figure shows the structure of the sulfur melting tank after the side closing plate is installed in the present application.

[0018] Figure 9 Shown is a structural diagram of the agitator in the sulfur melting tank of the present application.

[0019] Figure 10 Shown is a diagram showing the installation structure of a stirring part of the present application.

[0020] Figure 11 Shown is a schematic diagram of the stirring shaft connected to the first rotary joint of the present application.

[0021] Figure 12 Shown is a schematic diagram of the stirring shaft connected to the second rotary joint of the present application.

[0022] Figure 13 Shown is a diagram showing the hollow cavity on the stirring main rod of this application.

[0023] Figure 14 Shown is a display diagram of the first filtering structure of this application.

[0024] Figure 15 Shown is a diagram showing the second filtering structure of this application.

[0025] Figure 16 Shown is a diagram showing the internal structure of the intermediate filter chamber of the present application.

[0026] Figure 17 Shown is a structural diagram of the flow-guiding holes on the supporting base plate of the present application.

[0027] Figure 18 The figure shows the structure of the filter cartridge installation hole on the guide plate of the present application.

[0028] Figure 19 Shown is a display diagram of the filter barrel of the present application installed in the filter cartridge mounting hole.

[0029] Figure 20 Shown is a three-dimensional structural display diagram of a filter barrel of the present application.

[0030] Figure 21 Shown is a structural diagram of a sealing cover provided in this application.

[0031] Figure 22 Shown is a structural display diagram of a hanging device provided by this application.

[0032] Figure 23 The figure shows the structure of a feeding vehicle of the present application. Figure 1 .

[0033] Figure 24 The figure shows the structure of a feeding vehicle of the present application. Figure 2 .

[0034] Figure 25 Shown is a structural diagram of the bottom discharge door of the storage hopper of this application.

[0035] Figure 26Shown is a structural exploded view of the discharge door at the bottom of the storage hopper of this application.

[0036] Figure 27 Shown is a structural diagram of the closure cover of the present application.

[0037] Figure 28 Shown is a structural diagram of the spiral feeder of this application.

[0038] Description of reference numerals:

[0039] Sulfur melting equipment A, feeding equipment B, filtering equipment C; sulfur melting tank A1, sulfur filling pipe A101, liquid sulfur discharge pipe A102, arc-shaped guide groove A102.1, first cover plate A102.2; first shell A103, semicircular shell A103.1, steam inlet pipe A104, steam outlet pipe A105, first sealing plate A106, first base A107, support leg A108, first support frame A109, side sealing plate A110, inspection window A111; first discharger A2, intercepting valve A3, valve cover A301, gate A30 2, first push rod A303; stirrer A4, stirring shaft A401, mounting surface A401.1, mounting hole A401.2, stirring part A402, stirring main rod A402.1, scraper A402.2, locking nut A402.3; first drive device A5, first drive motor A501, first transmission mechanism A502, first housing A503; mechanical seal A6, first rotary joint A7, second rotary joint A8, filter box C1, vertical partition C101, support bottom plate C102, diversion hole C103, vertical diversion pipe C10 4, guide plate C105, filter cartridge installation hole C106, guide sleeve C107, limit groove C108, sealing ring C109; guide pipe C2, filter plate C3, filter barrel C4, barrel body C401, barrel bottom C402, bottom cover C403, limit part C404, hanging rod C405, hanging connecting rod C406, main connecting rod C406.1, auxiliary connecting rod C406.2, connecting ear C407, hanging ring C408; sealing cover C5, lifting rod C501, cover hinge seat C502, cover rod C503, cover knob C504, card Trough C505; hanging frame C6, electric hoist C7, loading platform B1, feeding pipe B101, closing cover B102, lifting telescopic rod B103, track B2; feeding car B3, frame B301, track wheel B302, second drive motor B303, chain transmission mechanism B304, storage hopper B305, unloading door B306, arc-shaped bottom baffle B306.1, side baffle B306.2, box structure B307, first drive telescopic rod B308, weighing sensor B309, sealing plate B310; screw loader B4, loading hopper B5. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] See also Figure 1 The figure shows the three-dimensional structure of the recovery device provided in the embodiment of the present application. Figure 1 . Figure 2 The figure shows the three-dimensional structure of the recovery device provided in the embodiment of the present application. Figure 2 . Figure 3 Shown is a side view of the recovery device provided in an embodiment of the present application.

[0045] This embodiment of the present application first provides a device for recovering solid sulfur containing impurities. The device primarily comprises a sulfur melting unit A, a feeding unit B, and a filtering unit C. Multiple sulfur melting units A are arranged side by side, heating and melting solid sulfur containing impurities into a liquid state. Feeding unit B is used to feed multiple sulfur melting units A, facilitating continuous production. Liquid sulfur from sulfur melting units A is fed into filtering unit C for filtration and separation to remove impurities. The filtered liquid sulfur is then sent to a liquid sulfur tank or liquid sulfur storage facility for subsequent processing. The technical solution provided by this invention implements a three-stage process: feeding, sulfur melting, and filtration.

[0046] The sulfur melting equipment A in the present invention is the core equipment, and its structure is designed as follows.

[0047] like Figure 4 The figure shows the appearance and structure of the sulfur melting equipment A provided in the embodiment of the present application. Figure 1 . Figure 5 The figure shows the appearance and structure of the sulfur melting equipment A provided in the embodiment of the present application. Figure 2 .

[0048] like Figure 4 and Figure 5 As shown in the figure, the sulfur melting equipment A mainly includes a horizontal sulfur melting tank A1. The sulfur melting tank A1 preferably adopts a stainless steel tank body. A heating device is arranged outside the sulfur melting tank A1. The heating device is used to heat the sulfur melting tank A1, thereby heating and melting the solid sulfur in the sulfur melting tank A1; the heating device adopts an electric heating device or a low-pressure steam heating device, preferably a low-pressure steam heating device.

[0049] An upward-facing sulfur filling pipe A101 is located at one end of the sulfur melting tank A1, and a liquid sulfur discharge pipe A102 is located at the other end. Solid sulfur is added to the sulfur melting tank A1 through the sulfur filling pipe A101, and the melted liquid sulfur is discharged from the liquid sulfur discharge pipe A102 to the filtration device C. In the present invention, the sulfur melting tank A1 can be arranged horizontally or at an angle. When arranged at an angle, the liquid sulfur discharge pipe A102 is positioned low, facilitating gravity discharge of the liquid sulfur within the sulfur melting tank A1.

[0050] In a specific embodiment of the present application, the sulfur melting tank A1 has a first shell A103 in the shape of a circular tube. The first shell A103 is a double-layer structure. A heating jacket is formed between the double-layer structure. One end of the heating jacket is connected to the steam input pipe A104, and the other end is connected to the steam output pipe A105. The interior of the sulfur melting tank A1 is heated by passing low-pressure steam into the heating jacket. The two ends of the first shell A103 are closed by a first sealing plate A106. The bottom of the first sealing plate A106 is connected to a rectangular first base A107. The four corners of the bottom of the first base A107 are provided with support feet A108 with adjustable heights. By adjusting the support feet A108, the first shell A103 can be set horizontally or tilted. A plurality of first support frames A109 are also provided between the two first sealing plates A106 to support the first shell A103.

[0051] like Figure 5 As shown in Figure 1, an upward-facing sulfur feeding pipe A101 is installed on the left side of the first shell A103. A first discharger A2 is located on top of the first discharger A101. The first discharger A2 houses a closed rotor, which uniformly feeds sulfur into the sulfur melting tank A1. A liquid sulfur discharge pipe A102 is installed on the first sealing plate A106 on the right side of the first shell A103. This liquid sulfur discharge pipe A102 penetrates the first sealing plate A106 and communicates with the interior of the first shell A103.

[0052] like Figure 6 The figure shows the structure of the liquid sulfur discharge pipe A102 in an embodiment of the present application. In the illustrated embodiment, the liquid sulfur discharge pipe A102 has an arc-shaped flow channel A102.1. This channel passes through a through-hole in the right first sealing plate A106 and connects to the bottom edge of the first housing A103. Liquid sulfur within the first housing A103 can flow smoothly into the arc-shaped flow channel A102.1. The top of the arc-shaped flow channel A102.1 is sealed by a first cover plate A102.2. In this application, the liquid sulfur discharge pipe A102 is a closed conduit connecting the first housing A103 and the filter device C.

[0053] Furthermore, in order to prevent unmelted sulfur from being directly discharged into the filtering device C, an intercepting valve A3 is provided on the liquid sulfur discharge pipe A102 in the present application. The intercepting valve A3 is used to control the connection or cutoff between the first shell A103 and the filtering device C. Figure 6In the illustrated embodiment, the intercepting valve A3 includes a valve cover A301, a gate plate A302, and a first push rod A303. The valve cover A301 is mounted on the first cover plate A102.2. The first push rod A303 is mounted on the top of the valve cover A301. The piston rod of the first push rod A303 is located inside the valve cover A301 and is connected to the semicircular gate plate A302. The first push rod A303 can be an electric push rod, a pneumatic push rod, or a hydraulic push rod. A connecting port is provided on the first cover plate A102.2. The gate plate A302 in the valve cover A301 can pass through the connecting port on the first cover plate A102.2 and extend into the arc-shaped guide groove A102.1. When the edge of the gate plate A302 contacts the inner wall of the arc-shaped guide groove A102.1, the interior of the arc-shaped guide groove A102.1 is blocked; at this time, the liquid sulfur in the first housing A103 cannot flow into the filter device C.

[0054] This application also provides an improved sulfur melting tank A1 structure, Figure 7 The diagram below illustrates the structure of the improved sulfur melting tank A1 provided in this application. In the improved sulfur melting tank A1, the first shell A103 is composed of two semicircular shells A103.1 assembled into a circular tube. The two semicircular shells A103.1 face each other vertically. The lower semicircular shell A103.1 is a double-layer structure with a heating jacket formed between the two layers. One end of the heating jacket is connected to the steam inlet pipe A104, and the other end is connected to the steam outlet pipe A105.

[0055] The improved sulfur melting tank A1 only heats the lower semicircular shell A103.1, leaving the upper semicircular shell A103.1 unheated. In actual production, the amount of filling in the sulfur melting tank A1 is smaller than that of the semicircular shell A103.1, so only the lower semicircular shell A103.1 needs to be heated.

[0056] In order to reduce the heat loss of the lower semicircular shell A103.1, side closing plates A110 are installed on both sides of the lower semicircular shell A103.1. Figure 8 The figure shows the structure of the sulfur melting tank A1 after installing the side closing plates A110. The two side closing plates A110 and the two first closing plates A106 enclose the lower semicircular shell A103.1 in a closed space.

[0057] Furthermore, in order to facilitate regular cleaning of the sulfur attached to the inner wall of the first shell A103, in a specific embodiment of the present application, a plurality of openable inspection windows A111 are provided on the upper semicircular shell A103.1.

[0058] Furthermore, in order to speed up the melting of sulfur, in a specific embodiment of the present application, a rotatable stirrer A4 can be provided inside the sulfur melting tank A1 to stir the material and accelerate the melting of the material. Figure 9The figure shows the structure of the agitator A4 in the sulfur melting tank A1 of the present application. As shown in the figure, the agitator A4 includes a stirring shaft A401 and a stirring portion A402. The stirring shaft A401 is arranged on the axis of the first shell A103. The two ends of the stirring shaft A401 pass through the first sealing plates A106 on both sides. Mechanical seals A6 are installed outside the two first sealing plates A106 and at the position where the stirring shaft A401 passes. One end of the stirring shaft A401 is connected to the first drive device A5. Figure 8 In the embodiment shown, the first drive device A5 is arranged on the left side.

[0059] The first driving device A5 is used to drive the stirring shaft A401 to rotate. Figure 8 As shown in , in a specific embodiment of the present application, the first driving device A5 includes a first driving motor A501 and a first transmission mechanism A502, and the first transmission mechanism A502 can adopt belt drive or chain drive. Figure 8 The first transmission mechanism A502 shown in FIG is a belt drive. A driven pulley is mounted on the agitator shaft A401, and a driving pulley is mounted on the drive shaft of the first drive motor A501. A transmission belt connects the driving and driven pulleys. A first housing A503 is mounted externally to the first transmission mechanism A502, enclosing the driving pulley, driven pulley, and transmission belt.

[0060] like Figure 9 As shown in FIG, a plurality of stirring parts A402 are provided along the length direction on the stirring shaft A401 in the first shell A103, and the stirring parts A402 extend along the radial direction of the first shell A103. Figure 10 The figure shows a mounting structure diagram of a stirring unit A402 according to the present application. In a specific embodiment of the present application, the stirring shaft A401 located within the first housing A103 has a square cross-section and has four mounting surfaces A401.1. Each mounting surface A401.1 is provided with a mounting hole A401.2 along its length. The mounting holes A401.2 on adjacent mounting surfaces A401.1 are staggered along their length, and each mounting hole A401.2 is mounted on a stirring unit A402. Figure 10 In the illustrated embodiment, two stirring parts A402 are symmetrically installed at the starting ends of the upper and lower mounting surfaces A401.1 of the stirring shaft A401, and then two stirring parts A402 are symmetrically installed on the left and right mounting surfaces A401.1 of the stirring shaft A401. In this way, the stirring parts A402 are alternately installed along the length direction of the stirring shaft A401, so that the stirring parts A402 are fully distributed along the length direction of the stirring shaft A401 in the first shell A103.

[0061] like Figure 10As shown in , in one specific embodiment of the present application, the stirring portion A402 is composed of a stirring main rod A402.1 and a scraper A402.2. One end of the stirring main rod A402.1 is provided with an external thread, which is threaded into the mounting hole A401.2. The external thread section of the stirring main rod A402.1 is sleeved with a locking nut A402.3 and a sealing gasket. The locking nut A402.3 is rotated to further press the sealing gasket onto the mounting surface A401.1, thereby preventing liquid sulfur from entering the mounting hole A401.2, thereby ensuring that the stirring portion A402 can be removed. The free end of the stirring main rod A402.1 is detachably mounted with a scraper A402.2. The scraper A402.2 has a blade, and the scraper A402.2 can scrape the inner wall of the first shell A103 during rotation.

[0062] Furthermore, during equipment maintenance, the sulfur attached to the stirrer A4 is difficult to clean. To clean the sulfur attached to the stirrer A4, in one embodiment of the present application, a hollow cavity extending along the axis is provided in the stirrer shaft A401, and the hollow cavity passes through both ends of the stirrer shaft A401; the hollow cavity is used to circulate low-pressure steam, which melts the sulfur solid attached to the stirrer A4 by heating the stirrer A4 itself. After the sulfur melts, it quickly detaches from the stirrer A4 during the rotation process. During specific installation, the stirrer shaft A401 is connected to the first drive device A5, and one end is connected to the first rotary joint A7, as shown in FIG. Figure 11 The figure shows a schematic diagram of the stirring shaft A401 connected to the first rotary joint A7 of the present application. The first rotary joint A7 is mounted on the first housing A503. The rotating tube portion of the first rotary joint A7 passes through the first housing A503 and is connected to one end of the stirring shaft A401. Low-pressure steam is introduced from the first rotary joint A7. The other end of the stirring shaft A401 passes through the mechanical seal A6 on the first sealing plate A106 on the other side and is connected to the second rotary joint A8; as shown in FIG. Figure 12 The diagram shows the connection between the stirring shaft A401 and the second rotary joint A8. The mechanical seal A6 on the other side of the first sealing plate A106 is mounted with an end cap, which is then mounted on the second rotary joint A8. The rotating tube portion of the second rotary joint A8 passes through the end cap and connects to the stirring shaft A401. The second rotary joint A8 is used to discharge low-pressure steam.

[0063] Furthermore, in a specific embodiment of the present application, the mounting hole A401.2 on the stirring shaft A401 is connected to the hollow cavity; the stirring main rod A402.1 in the stirring part A402 has a hollow cavity, such as Figure 13 The figure shows the hollow cavity within the stirring rod A402.1 of this application. Once the stirring rod A402.1 is installed in the mounting hole A401.2, the hollow cavity within the stirring rod A402.1 communicates with the mounting hole A401.2. This design allows low-pressure steam to further heat the stirring portion A402, thereby quickly removing any sulfur adhering to the stirring portion A402.

[0064] In the present application, the low-pressure steam is passed to the agitator A4 not only in the equipment maintenance stage but also in the sulfur melting stage, thereby accelerating the temperature rise of the liquid sulfur and the melting speed.

[0065] The liquid sulfur melted in the sulfur melting device A is sent to the filtering device C for filtration and separation to remove impurities. The filtering device C can adopt the following specific structural forms.

[0066] Figure 1 In the illustrated embodiment, the liquid sulfur discharge pipes A102 of the three sulfur melting units A are connected to a filter unit C. The filter unit C comprises a filter housing C1 and a filter structure disposed therein. In this application, the filter housing C1 employs an insulated structure. For example, the filter housing C1 is designed as a sandwich structure filled with insulating material. Furthermore, a steam heating pipe can be provided within the sandwich structure to heat the interior of the filter housing C1 with low-pressure steam, preventing the liquid sulfur from solidifying within the filter housing C1.

[0067] The filtering structures in this application are various and are listed below for explanation.

[0068] like Figure 14 The figure shows the first filter structure of the present application. The upper part of the filter box C1 is a rectangular shaped accommodating cavity, and the lower part gradually narrows. An inclined guide pipe C2 is provided at the bottom of the filter box C1, and the guide pipe C2 is connected to the liquid sulfur pool or liquid sulfur storage equipment. In this embodiment, the filter structure adopts a filter plate C3, and the filter plate C3 can be provided in multiple layers. The top filter plate C3 is lower than the lowest point of the liquid sulfur discharge pipe A102. When using multiple layers of filter plates C3, filter plates C3 with different pore sizes can be used for layered filtration. During specific installation, the large-pore filter plate C3 is arranged above the small-pore filter plate C3; for example, when a two-layer filter plate C3 structure is used, the upper filter plate C3 adopts a 20-mesh stainless steel mesh, and the specific pore size is selected according to actual conditions; the lower filter plate C3 adopts a 100-mesh sintered metal felt.

[0069] The use of filter plate C3 has the problem of difficulty in cleaning the filter residue. For this reason, the present application also provides a second filter structure. Figure 15 The figure shows the second filter structure of the present application. The second filter structure can be removed from the top of the filter box C1, and each sulfur melting equipment A is equipped with a separate filter structure. The significance of this design is that when a single filter structure is used for slag removal, it will not affect the operation of other equipment.

[0070] like Figure 15As shown in , the rectangular holding chamber on the upper part of the filter box C1 is divided into three independent filter chambers by a vertical partition C101 installed vertically. Each filter chamber corresponds to a sulfur melting device A, that is, the liquid sulfur discharge pipe A102 of each sulfur melting device A is connected to a filter chamber. Figure 16 The figure shows the internal structure of the intermediate filter chamber of the present invention. A support base plate C102 is provided in the filter chamber, and a flow guide hole C103 is provided on the support base plate C102. Figure 17 The figure shows the structure of the flow holes C103 on the support base plate C102. A vertical flow guide pipe C104 is set on the bottom surface of the support base plate C102. The flow holes C103 are connected to the vertical flow guide pipe C104, and the bottom of the vertical flow guide pipe C104 is connected to the flow guide pipe C2.

[0071] like Figure 16 and Figure 17 As shown, a guide plate C105 is provided above the support base plate C102, and the guide plate C105 is lower than the lowest point of the liquid sulfur discharge pipe A102. A filter cartridge mounting through hole C106 is provided in the center of the guide plate C105. Figure 18 The figure shows the structure of the filter cartridge mounting hole C106 on the guide plate C105 of the present invention. In the embodiment shown in the figure, the center of the upper surface of the guide plate C105 is concave downward, and the filter cartridge mounting hole C106 is located in the concave.

[0072] The liquid sulfur discharged from the liquid sulfur discharge pipe A102 falls on the guide plate C105, and then flows along the concave surface of the guide plate C105 to the filter cartridge installation through hole C106 in the middle.

[0073] like Figure 16 and Figure 17 As shown, a guide sleeve C107 is provided between the guide plate C105 and the support base plate C102. The bottom of the guide sleeve C107 is connected to the guide hole C103 on the support base plate C102, and the top of the guide sleeve C107 is connected to the filter cartridge installation hole C106 on the guide plate C105. Figure 17 The guide sleeve C107 is cut away from the front half to reveal the filter barrel C4 inside. The filter barrel C4 is placed in the filter barrel mounting hole C106 of the guide plate C105. Figure 19 The figure shows the filter barrel C4 of the present application installed in the filter cartridge installation hole C106. After installation, the top of the filter barrel C4 is flush with the edge of the filter cartridge installation hole C106, or the top of the filter barrel C4 is lower than the edge of the filter cartridge installation hole C106, so that liquid sulfur can flow smoothly into the filter barrel C4. The barrel body C401 of the filter barrel C4 is partially suspended in the guide sleeve C107, and there is a space between the barrel body C401 and the inside of the guide sleeve C107 (such as Figure 17 ).

[0074] The liquid sulfur falling on the guide plate C105 flows into the filter barrel C4 for filtration and separation, and the solid residue remains in the filter barrel C4. The filtered liquid sulfur enters the guide sleeve C107, then falls into the vertical guide pipe C104, and finally is introduced into the liquid sulfur pool or liquid sulfur storage equipment through the guide pipe C2.

[0075] Furthermore, in a specific embodiment of the present application, a heating tape is provided on the outer wall of the guide sleeve C107, and a heating tape can also be provided inside the guide plate C105. The heating tape is used to heat the guide sleeve C107 and the guide plate C105, thereby preventing sulfur from solidifying on their surfaces.

[0076] In a specific embodiment of the present application, the filter barrel C4 can be designed as follows. Figure 20 Shown is a three-dimensional structural display diagram of a filter barrel C4 of the present application. The filter barrel C4 has a cylindrical barrel body C401, and the bottom of the barrel body C401 is a funnel-shaped barrel bottom C402. The barrel bottom C402 is provided with a circular slag discharge port, which is closed by a detachable bottom cover C403. The slag can be discharged after the bottom cover C403 is opened. The barrel body C401 and the barrel bottom C402 are covered with filter pores, and the pore size is selected according to the size of the filter residue. An annular limiting portion C404 is provided on the edge of the top opening of the barrel body C401. The diameter of the limiting portion C404 is larger than the diameter of the barrel body C401, and the limiting portion C404 can be stuck in the filter cartridge mounting through hole C106. Specifically, as Figure 18 As shown in FIG, a circular retaining groove C108 is provided at the filter cartridge mounting hole C106 in the center of the guide plate C105. The depth of the retaining groove C108 is greater than or equal to the thickness of the retaining portion C404. After the filter barrel C4 is installed, the retaining portion C404 of the filter barrel C4 is stuck in the retaining groove C108.

[0077] In order to facilitate taking out and placing the filter barrel C4, a hanging structure is provided on the filter barrel C4. Figure 20 In the illustrated embodiment, the hanging structure includes a hanging rod C405 and hanging connecting rods C406. Hanging rod C405 is connected to the upper edge of the filter barrel C4 via three evenly distributed groups of hanging connecting rods C406. Specifically, three connecting ears C407 are arranged in a circular array on the upper edge of the filter barrel C4. The hanging connecting rod C406 consists of a main connecting rod C406.1 and an auxiliary connecting rod C406.2. The upper end of the main connecting rod C406.1 is hinged to the side of the hanging rod C405, and the lower end of the main connecting rod C406.1 is detachably connected to the connecting ear C407 via bolts. The upper end of the auxiliary connecting rod C406.2 is hinged to the main connecting rod C406.1, and the lower end of the auxiliary connecting rod C406.2 is hinged to the hanging rod C405. In addition, a hanging ring C408 is provided at the top of the hanging rod C405. Use a hook to hook the hanging ring C408 and lift the filter barrel C4 upward out of the filter box C1.

[0078] Each filter chamber is provided with an openable sealing cover C5 on the top. After the sealing cover C5 is opened, the filter barrel C4 is taken out using a hanging device and replaced with a new filter barrel C4.

[0079] like Figure 21 The figure shows the structure of a sealing cover C5 provided by the present application. In a specific embodiment of the present application, a barrel hole is provided on the top cover of the filter box C1 corresponding to each filter chamber, a sealing ring C109 is provided on the edge of the barrel hole, and a circular sealing cover C5 is installed inside the sealing ring C109. A lifting rod C501 is provided on the sealing cover C5. Specifically, the middle part of the lifting rod C501 is hinged to the center of the top of the sealing cover C5, the rear end of the lifting rod C501 is hinged to the top cover of the filter box C1, and the front end of the lifting rod C501 is detachably connected to the pressure cover assembly on the top cover of the filter box C1. The gland assembly includes a gland hinge seat C502 and a gland rod C503; the gland hinge seat C502 is installed on the top cover of the filter box C1; the bottom end of the gland rod C503 is hinged on the gland hinge seat C502, and a rotatable gland knob C504 is provided at the top of the gland rod C503, and a threaded hole is provided at the bottom of the gland knob C504, and the top of the gland rod C503 is threadedly connected to the threaded hole of the gland knob C504.

[0080] like Figure 21 As shown in Figure 1, the front end of the lifting rod C501 has an open slot C505. The cover pressing rod C503 can be rotated upward to engage the slot C505. The cover pressing knob C504 is then rotated downward, which presses the lifting rod C501 downward, thereby pressing the sealing cover C5 tightly against the sealing ring C109. To open the sealing cover C5, the cover pressing knob C504 is first rotated upward, then the cover pressing rod C503 is removed from the slot C505. The lifting rod C501 is then lifted upward, opening the sealing cover C5 to the side.

[0081] In this application, the hanging equipment can be an electric hoist C7. Figure 22 The figure shows the structure of a hanging device provided by this application. A hanging frame C6 is installed above the filter box C1, and a movable electric hoist C7 is installed on the crossbeam track of hanging frame C6. Electric hoist C7 can be moved to remove each filter barrel C4 and replace it with a new one. The filter barrel C4 containing the filter residue is transported to a dedicated residue storage workshop via a transport cart for dumping. After dumping, the filter barrel C4 is cleaned and dried before reuse.

[0082] In this application, the feeding equipment B is used to feed multiple sulfur melting equipment A to facilitate continuous production. Figure 1 、 Figure 2As shown in FIG, a loading platform B1 is installed on one side of the sulfur feeding pipe A101 of the sulfur melting equipment A. A track B2 and a feeding car B3 are installed on the loading platform B1. The feeding car B3 moves along the track B2 to the side of the loading platform B1, where it is fed with material via a screw feeder B4. The feeding car then moves to the sulfur melting equipment A that needs to be fed.

[0083] In a specific embodiment of the present application, the feeding vehicle B3 can be designed as follows.

[0084] like Figure 23 The structure of a feeding vehicle B3 of this application is shown as follows Figure 1 . Figure 24 The structure of a feeding vehicle B3 of this application is shown as follows Figure 2 As shown in the figure, the feeding vehicle B3 includes a vehicle frame B301, and rail wheels B302 are symmetrically arranged on both sides of the vehicle frame B301, with two rail wheels B302 arranged on each side. The rail wheels B302 run in the track groove of the track B2. At least one rail wheel B302 is connected to the drive mechanism; Figure 23 In the embodiment shown, both front rail wheels B302 are connected to a drive mechanism. The drive mechanism is used to drive the rail wheels B302 to rotate, thereby driving the feeding vehicle B3 to move along the rail B2. Figure 24 As shown in , in a specific embodiment of the present application, the driving mechanism includes a second driving motor B303 and a chain transmission mechanism B304; the second driving motor B303 is installed on the frame B301 and is located on the outside of the front track wheel B302, and the driving shaft of the second driving motor B303 is connected to the rotating shaft of the front track wheel B302 through the chain transmission mechanism B304.

[0085] In order to control the feeding vehicle B3 to stop quickly, a brake is installed on at least one rail wheel B302; in a specific embodiment of the present application, both rear rail wheels B302 are installed with brakes.

[0086] like Figure 23 、 Figure 24 As shown in FIG, a funnel-shaped storage hopper B305 is installed in the frame B301. The top of the storage hopper B305 is open and the bottom is closed by an openable discharge door B306. Figure 25 Shown is a structural diagram of the bottom discharge door B306 of the storage hopper B305 of this application. Figure 26 The bottom of the storage hopper B305 is a rectangular box structure B307, and the bottom opening of the box structure B307 is an arc shape when viewed from the side ( Figure 26 ), the arc-shaped opening is closed by the discharge door B306. Figure 26In the illustrated embodiment, the unloading door B306 has an arc-shaped bottom baffle B306.1 and two side baffles B306.2. The arc-shaped bottom baffle B306.1 is an arc-shaped curved surface, which can close the bottom opening of the box structure B307; the side baffles B306.2 are symmetrically arranged on both sides of the arc-shaped bottom baffle B306.1, and the two side baffles B306.2 are rotatably connected to the two opposite sides of the box structure B307. The unloading door B306 can be rotated to one side of the box structure B307, thereby opening the bottom opening of the box structure B307 for discharging.

[0087] Figure 25 In the illustrated embodiment, the arcuate bottom baffle B306.1 is driven open or closed by a first telescopic drive rod B308. Specifically, the upper end of the first telescopic drive rod B308 is hinged to the vehicle frame B301 or the side of the storage hopper B305, and the lower end of the first telescopic drive rod B308 is hinged to the arcuate bottom baffle B306.1. When the piston rod of the first telescopic drive rod B308 retracts into the cylinder, it drives the discharge door B306 to rotate to the side of the box structure B307 for material discharge. When the piston rod of the first telescopic drive rod B308 extends, it drives the discharge door B306 to rotate and close the bottom opening of the box structure B307. The first telescopic drive rod B308 can be an electric, pneumatic, or hydraulic telescopic rod.

[0088] Furthermore, in this application, a weighing sensor B309 may be provided on the vehicle frame B301, such as Figure 23 As shown in FIG, the weighing sensor B309 is supported at the bottom of the top edge of the storage hopper B305, and the weighing sensor B309 is used to detect the amount of material added to the storage hopper B305 each time.

[0089] like Figure 25 As shown in FIG, a feeding conduit B101 is provided on the loading platform B1. The bottom of the feeding conduit B101 is connected to the feed port of the first discharger A2 of the sulfur melting tank A1. The top opening of the feeding conduit B101 is larger than the bottom opening of the box structure B307. When the box structure B307 is located above the top opening of the feeding conduit B101, the discharge door B306 is opened to discharge the material.

[0090] In this application, the recycled sulfur raw material is pre-crushed to accelerate melting. Dust is generated during the discharge of the crushed material through the feeder cart B3. To address this, a retractable enclosure B102 can be added to the feeder conduit B101. Before the feeder cart B3 discharges the material, the enclosure B102 is activated to enclose the bottom opening of the box structure B307 in a closed space, preventing dust from dispersing.

[0091] like Figure 27The figure shows the structure of the enclosed cover B102 of the present application. A enclosed cover B102 made of a flexible material is provided on the feeding platform B1 and around the feeding conduit B101. The feeding conduit B101 with a rectangular cross-section is shown in the figure surrounded by the enclosed cover B102 with a rectangular cross-section. A frame is provided on the upper edge of the enclosed cover B102, and the frame is made of elastic rubber. The bottom edge of the enclosed cover B102 is connected to the feeding platform B1. A plurality of lifting and telescopic rods B103 are provided on the feeding platform B1. The cylinders of the lifting and telescopic rods B103 are installed on the lower surface of the feeding platform B1. The piston rods of the lifting and telescopic rods B103 pass through the feeding platform B1 and are connected to the upper edge frame of the enclosed cover B102. In addition, a sealing plate B310 is provided at the bottom of the frame B301, and the box structure B307 passes through the sealing plate B310. After the closed cover B102 is unfolded upward by the lifting and telescopic rod B103, the upper edge frame of the closed cover B102 is pressed on the sealing plate B310, thereby enclosing the feeding conduit B101 and the box structure B307 inside.

[0092] like Figure 28 The diagram below shows the structure of the screw loader B4. The feed end of the screw loader B4 is connected to the loading hopper B5, and the discharge end of the screw loader B4 extends to the loading platform B1, located above one side of the track B2. A feeding cart B3 is parked below the discharge end of the screw loader B4 to add materials.

[0093] In a specific embodiment of the present application, an exhaust gas treatment device is further included. The exhaust gas treatment device is connected to the sulfur melting tank A1 and the filter box C1 through a pipeline. The gas generated by heating sulfur is discharged to the exhaust gas treatment device through a fan to absorb H2S and SO2. The harmful gases in the exhaust gas are treated and discharged after meeting the standards.

[0094] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A device for recovering solid sulfur containing impurities, characterized in that: include: The sulfur melting equipment is used to heat and melt solid sulfur containing impurities to make it liquid; the sulfur melting equipment is arranged in multiple units side by side, including a horizontal sulfur melting tank, and a heating device is arranged outside the sulfur melting tank; an upward sulfur filling pipe is arranged at one end of the sulfur melting tank, and a first discharger is arranged on the top of the sulfur filling pipe; a liquid sulfur discharge pipe is arranged at the other end of the sulfur melting tank; the sulfur melting tank has a first shell in the shape of a circular tube, and the first shell is a double-layer structure, and a heating jacket is formed between the double-layer structure, and one end of the heating jacket is connected to the steam input pipe, and the other end is connected to the steam output pipe; by Low-pressure steam is introduced into the melting sulfur tank to heat the interior; the first shell is assembled into a circular tube by two semicircular shells; the two semicircular shells are opposed to each other up and down, wherein the lower semicircular shell is a double-layer structure, and a heating jacket is formed between the double-layer structures; a plurality of openable inspection windows are provided on the upper semicircular shell; the liquid sulfur discharge pipe has an arc-shaped guide groove, which is connected to the bottom edge of the first shell and is closed at the top by a first cover plate; an interception valve is provided on the liquid sulfur discharge pipe; a rotatable agitator is provided in the melting sulfur tank; A feeding device is used to feed the sulfur melting equipment; a feeding platform is provided on one side of the sulfur filling pipe of the sulfur melting equipment, and the feeding device includes a track and a feeding car provided on the feeding platform; the feeding car moves along the track to one side of the feeding platform to add material via a screw feeder; the feeding car then moves to the sulfur melting equipment that needs to be added for addition; the feeding car includes a frame, track wheels are provided on both sides of the frame, and a funnel-shaped storage hopper is installed in the frame, the top of the storage hopper is open, and the bottom is closed by an openable discharge door; a feeding conduit is provided on the feeding platform, the bottom of which is connected to the feed port of the first discharger of the sulfur melting tank; A filtering device is used to filter the liquid sulfur melted by the sulfur melting device; the filtering device includes a filtering box, a liquid sulfur discharge pipe is connected to the filtering box; a filtering structure is arranged inside the filtering box; a diversion pipe is arranged at the bottom of the filtering box, and the diversion pipe is connected to the liquid sulfur pool or liquid sulfur storage device; the accommodating cavity on the upper part of the filtering box is divided into a plurality of independent filtering chambers by a vertical partition installed vertically, and each filtering chamber corresponds to a sulfur melting device; a supporting bottom plate is arranged in the filtering chamber, and a diversion hole is arranged on the supporting bottom plate; a vertical A guide pipe, the guide hole is connected to the vertical guide pipe, and the bottom of the vertical guide pipe is connected to the guide pipe; a guide plate is set above the support base plate, the center of the upper surface of the guide plate is depressed downward, and a filter cartridge installation hole is set in the depression; a guide sleeve is set between the guide plate and the support base plate, the bottom of the guide sleeve is connected to the guide hole, and the top of the guide sleeve is connected to the filter cartridge installation hole; a filter barrel is placed in the filter cartridge installation hole, and the barrel body of the filter barrel is suspended in the guide sleeve; a hanging structure is set on the filter barrel, and the filter barrel can be lifted out of the barrel removal hole on the top cover of the filter box using the hanging equipment; The filter barrel has a cylindrical barrel body, a funnel-shaped barrel bottom, a circular slag discharge port is set at the barrel bottom, and the slag discharge port is closed by a detachable bottom cover, and the slag can be discharged after the bottom cover is opened; the barrel body and the barrel bottom are covered with filtering pores, and the pore size is selected according to the size of the filter residue; an annular limiting part is set at the opening edge of the top of the barrel body, and the diameter of the limiting part is larger than the diameter of the barrel body, and the limiting part can be stuck in the filter cartridge installation hole; specifically, a circular limiting groove is set at the filter cartridge installation hole in the center of the guide plate, and the depth of the limiting groove is greater than or equal to the thickness of the limiting part; after the filter barrel is installed, the limiting part of the filter barrel is stuck in the limiting groove.

2. The device for recovering solid sulfur containing impurities according to claim 1, characterized in that: The heating device is an electric heating device or a low-pressure steam heating device.

3. The device for recovering solid sulfur containing impurities according to claim 1, characterized in that: The agitator includes a stirring shaft and a stirring part. The stirring shaft is arranged on the axis of the first shell. Both ends of the stirring shaft pass through the first sealing plates on both sides of the first shell. One end of the stirring shaft is connected to the first driving device, and the first driving device is used to drive the stirring shaft to rotate; a plurality of stirring parts are detachably arranged on the stirring shaft in the first shell along the length direction, and the stirring parts extend radially along the first shell; the stirring part consists of a stirring main rod and a scraper. One end of the stirring main rod is threadedly connected to the stirring shaft, and the other end is detachably installed with a scraper. The scraper can scrape the inner wall of the first shell during rotation.

4. The device for recovering solid sulfur containing impurities according to claim 1, characterized in that: A hollow cavity extending along the axis is provided in the stirring shaft, and the hollow cavity is used for circulating low-pressure steam; a mounting hole is provided on the stirring shaft, and the mounting hole is connected to the hollow cavity of the stirring shaft; a stirring main rod is threadedly connected in the mounting hole, and the stirring main rod has a hollow cavity, and the hollow cavity inside the stirring main rod is connected to the mounting hole.

5. The device for recovering solid sulfur containing impurities according to claim 1, characterized in that: The filtering structure is a filter plate arranged in the filter box, and the filter plate is provided with at least one layer; when more than one layer of filter plates is provided, the large-pore filter plate is arranged above the small-pore filter plate.

6. The device for recovering solid sulfur containing impurities according to claim 1, characterized in that: The bottom of the storage hopper is a rectangular box structure, and the bottom opening of the box structure is arc-shaped when viewed from the side, and the arc-shaped opening is closed by the discharge door; the discharge door has an arc-shaped bottom baffle and two side baffles, and the arc-shaped bottom baffle is an arc-shaped curved surface, which can close the bottom opening of the box structure; side baffles are symmetrically arranged on both sides of the arc-shaped bottom baffle, and the two side baffles are rotatably connected to two opposite sides of the box structure; the discharge door is driven to open or close by a first driving telescopic rod.

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