Liquid sulfur sampling system

Abstract

The present application relates to the technical field of petroleum chemical industry, and particularly relates to a liquid sulfur sampling system. The liquid sulfur sampling system comprises a sampling container, a top cover and a ring wing. One end of the sampling container is in an open structure, and a sealing ring is arranged on the edge of the opening. The edge of the top cover is matched with the shape of the edge of the opening, the edge of the top cover extends to the middle part to form a first flow guide surface at an angle with the axis of the opening, the first flow guide surface is configured to guide the liquid droplets close to the edge of the opening to a position away from the edge of the opening in the axial direction of the opening, and a heat preservation cavity and heat preservation equipment are further arranged in the top cover. The inner side of the ring wing is connected with the edge of the top cover, and a second flow guide surface is arranged on the ring wing, the second flow guide surface is configured to guide the liquid droplets close to the edge of the opening to a position away from the edge of the opening in the axial direction of the opening. The first flow guide surface of the top cover and the second flow guide surface of the ring wing respectively abut against the sealing ring. The present application can prevent the solidification of sulfur during the sampling process, and can also avoid the diffusion of sulfur vapor into the air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of petroleum chemical industry, in particular to a liquid sulfur sampling system. BACKGROUND

[0002] In the field of petroleum chemical industry, sulfur-containing substances in the production process need to be recovered and treated to meet environmental protection requirements. In the sulfur recovery process, the Claus treatment process is usually used to oxidize 1 / 3 volume content of H2S to SO2 in the reaction furnace, and the remaining 2 / 3 volume content of H2S reacts with 1 / 3 volume content of SO2 to generate elemental sulfur. The tail gas after reaction is subjected to catalytic conversion and condensation process, and liquid sulfur is condensed at a temperature of about 132℃. The liquid sulfur is first passed through a sulfur seal and a sampling device and then finally transported to a liquid sulfur storage device.

[0003] A Chinese utility model patent with publication number CN211946276U discloses a floor impurity-containing solid sulfur recovery equipment, which includes a recovery container, an inner cavity of which is used to contain floor impurity-containing solid sulfur; a heating cavity, which is arranged around the inner cavity of the recovery container, is used to heat the floor impurity-containing solid sulfur and liquefy the sulfur therein, the heating cavity is used to introduce heating fluid and / or a heating element is arranged in the heating cavity; a filter screen, which is detachably installed in the inner cavity of the recovery container, is used to support the placement of floor impurity-containing solid sulfur to provide liquid sulfur to pass through when the sulfur is liquefied and to remove impurities; a liquid sulfur collection structure, which is located below the filter screen, collects clean liquid sulfur after the heated liquid sulfur is filtered by the filter screen to remove impurities, thereby achieving recovery. However, the process of heating and converting sulfur into liquid state is usually accompanied by the generation of sulfur vapor, which flows upward and accumulates at the top cover position, thereby increasing the corrosion rate of the top cover. If the sulfur vapor escapes from the recovery container, it will pollute the environment and seriously threaten the personal safety of workers. SUMMARY

[0004] The present application provides a liquid sulfur sampling system, which promotes the liquefaction of sulfur vapor by maintaining the temperature of the top cover, and prevents the escape of sulfur vapor from the recovery container and to some extent inhibits the diffusion of sulfur vapor in the air by using the cooperation of the flow guide structure and the sealing structure, thereby slowing down the corrosion rate of the top cover and preventing environmental pollution.

[0005] The present application is realized by the following technical solutions:

[0006] A liquid sulfur sampling system, comprising:

[0007] A sampling container, one end of the sampling container is an open structure, a sealing ring is arranged on the edge of the opening, wherein the sampling container is further provided with an input port and an output port for the entry and exit of liquid sulfur;

[0008] a top cover, the top cover rim being shaped to fit the rim of the opening, the top cover rim extending to a middle part to form a first flow guide surface at an angle to the opening axis, the first flow guide surface being configured to guide liquid droplets approaching the opening rim in the opening axial direction to a position away from the opening rim, the top cover further having a heat preservation cavity therein, the heat preservation cavity having a heat preservation device disposed therein;

[0009] a ring wing, an inner side of the ring wing being connected to the top cover rim, the ring wing having a second flow guide surface disposed thereon, the second flow guide surface being configured to guide liquid droplets approaching the opening rim in the opening axial direction to a position away from the opening rim;

[0010] wherein the first flow guide surface of the top cover and the second flow guide surface of the ring wing respectively abut against the sealing ring.

[0011] In some embodiments, all the first flow guide surfaces are conical surfaces.

[0012] In some embodiments, the conical surfaces are circular conical surfaces.

[0013] In some embodiments, the angle between the first flow guide surface and the opening axis is 55°-75°.

[0014] In some embodiments, the liquid sulfur sampling system further comprises a lifting device, the lifting device being installed on the sampling container, a lifting movement end of the lifting device being connected to the top cover.

[0015] In some embodiments, the heat preservation device comprises:

[0016] a controller;

[0017] a sensor connected to the controller, the sensor being installed on the sampling container and being used to monitor the gaseous sulfur temperature at the first flow guide surface;

[0018] a heat exchange pipe, the heat exchange pipe being disposed in the heat exchange cavity to absorb the heat of the top cover;

[0019] a proportional flow meter, the proportional flow meter being disposed on the heat exchange pipe to control the flow of the heat exchange medium in the heat exchange pipe, the proportional flow meter being controlled by the controller.

[0020] In some embodiments, the part of the heat exchange pipe located in the heat exchange cavity is in a serpentine shape.

[0021] In some embodiments, the sealing ring is a fluororubber ring or a nitrile rubber ring.

[0022] In some embodiments, the sampling container comprises an inner wall and an outer wall, a closed heat tracing cavity is formed between the inner wall and the outer wall, and a steam inlet and a steam outlet are arranged on the outer wall and communicate with the heat tracing cavity.

[0023] In some embodiments, the liquid sulfur sampling system further comprises a heat tracing sleeve.

[0024] The heat tracing sleeve comprises a first pipe body and a second pipe body, one end of the first pipe body communicates with the inlet or the outlet, and the other end is used for connecting a liquid sulfur supply device or a liquid sulfur collection device, the second pipe body is spacedly sleeved on the first pipe body, one end of the second pipe body is sealingly connected with the first pipe body to form a heat tracing gap, and the other end of the second pipe body communicates with the steam well or the steam outlet, and the second pipe body is further used to access a steam circulation system to make steam flow into or out of the heat tracing gap.

[0025] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0026] 1. The liquid sulfur sampling system provided by the present application can keep the temperature of the top cover at a value that can liquefy sulfur vapor as much as possible through the heat preservation device, so that heat exchange can be performed when the sulfur vapor rises and contacts the top cover to realize the liquefaction of the sulfur vapor, thereby preventing the sulfur vapor from gathering in large quantities at the top cover position and causing the corrosion rate of the top cover to increase; at the same time, the liquefied sulfur vapor forms liquid sulfur, and the liquid droplets formed after liquefaction can move in a direction away from the open edge of the top cover under the flow guiding effect of the first flow guiding surface of the top cover, thereby forming a converging effect, and the converged liquid sulfur can overcome the surface tension under the action of gravity and drop into the sampling container, thereby reducing the solidification of the liquid sulfur on the top cover.

[0027] 2. The liquid sulfur sampling system provided by the present application can form two sealing positions after the first flow guiding surface and the second flow guiding surface abut against the sealing ring, and there is a certain retention gap between the two sealing positions, so that a small amount of sulfur vapor that leaks from the recovery container can be liquefied in the retention gap, thereby preventing the sulfur vapor from diffusing into the air; if the amount of sulfur vapor leaking from the recovery container is large, the second flow guiding surface can also accelerate the liquefaction speed of the sulfur vapor leaking from the retention gap, thereby preventing the sulfur vapor from diffusing into the air. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Fig. 1 Structure schematic diagram of liquid sulfur sampling system provided for the embodiment of the present application;

[0030] Fig. 2 Structure schematic diagram of partial structure when the top cover and the sampling container interfere with each other provided for the embodiment of the present application.

[0031] Markings in the drawings and corresponding names of parts:

[0032] 1-liquid sulfur delivery pipeline, 2-jacket flange, 3-heat tracing tube, 4-outer wall, 5-filter, 6-inner wall, 7-L-shaped support rod, 8-heat exchange pipe outlet, 9-cable body, 10-top cover, 711-proportional flow meter, 12-instrument air tank, 13-heat exchange pipe, 14-controller, 15-temperature sensor, 16-sealing ring, 17-steam inlet pipeline, 18-flange, 19-supporting sheet, 20-supporting column, 21-steam outlet pipeline, 22-first flow guide surface, 23-second flow guide surface, 24-residual gap. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments and drawings, the illustrative embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application.

[0034] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without these specific details. In other instances, well-known structures, circuits, materials or processes have not been described in detail in order to avoid obscuring the present application.

[0035] Throughout the description, the mention of "one embodiment", "an embodiment", "one example" or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present application. Therefore, the phrases "one embodiment", "an embodiment", "one example" or "an example" appearing in various places throughout the description are not necessarily all referring to the same embodiment or example. Furthermore, particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, one of ordinary skill in the art will understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] In the description of the present application, the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0037] As shown in Figs. 1-2 The liquid sulfur sampling system provided by the embodiment of the present application includes a sampling container, a top cover 10 and a ring wing. One end of the sampling container is in an open structure, and a sealing ring 16 is arranged on the edge of the opening. The sampling container is further provided with an input port and an output port for the entry and exit of liquid sulfur. The edge of the top cover 10 is shaped to match the edge of the opening. The edge of the top cover 10 extends to the middle to form a first flow guide surface 22 at an angle with the axis of the opening. The first flow guide surface 22 is configured to guide the liquid droplets close to the edge of the opening to a position away from the edge of the opening in the axial direction of the opening. A heat preservation cavity is further arranged in the top cover 10, and a heat preservation device is arranged in the heat preservation cavity. The inner side of the ring wing is connected with the edge of the top cover 10, and a second flow guide surface 23 is arranged on the ring wing. The second flow guide surface 23 is configured to guide the liquid droplets close to the edge of the opening to a position away from the edge of the opening in the axial direction of the opening. The first flow guide surface 22 of the top cover 10 and the second flow guide surface 23 of the ring wing respectively abut against the sealing ring 16.

[0038] In the embodiment of the present application, an annular sealing groove can be arranged on the edge of the opening to cooperate with the installation of the sealing ring 16, so as to ensure the stability of the sealing ring 16 on the sampling container. The specific shape of the opening can not be limited, for example, it can be square, circular, triangular, etc. Therefore, the shape of the edge of the top cover 10 can also be square, circular, triangular, etc. For the convenience of implementation, the shape of the opening is preferably circular.

[0039] It can be understood that the first flow guide surface 22 on the top cover 10 can be a plane or a curved surface. When the first flow guide surface 22 is a curved surface, the first flow guide surface 22 can be regarded as a convex surface on the top cover 10 relative to the whole top cover 10. For example, after the top cover 10 cooperates with the sampling container, the part of the top cover 10 located in the sampling container is a spherical surface. At this time, the angle between the first flow guide surface 22 and the axis of the opening is a continuously changing value.

[0040] Of course, in order to obtain a better flow guiding effect, the first flow guide surface 22 is preferably a plane. In this way, the angle between the first flow guide surface 22 and the axis of the opening can be set to be small and constant, which is conducive to the flow of liquid droplets thereon.

[0041] The different liquid drops slide under the guiding effect of the different first guiding surfaces 22 and then gather. In order to enable the gathered liquid drops to quickly fall into the sampling container and reduce the residence time of the liquid drops on the top cover 10, in some embodiments, the first guiding surface 22 is provided as a conical surface.

[0042] It can be understood that the vertex of the conical surface in the embodiments of the present application does not have to be located on the opening axis, that is, for each part of the same height on the first guiding surface 22, the angle between the first guiding surface 22 and the opening axis can be continuously changed, for example, when the opening shape is circular; or can be discontinuously changed, for example, when the opening shape is square.

[0043] It can be understood that if the vertex of the conical surface is not located on the opening axis, there will inevitably be a problem that the guiding area on one side is large and the guiding area on the other side is small, that is, the liquid drops are too unevenly distributed on the first guiding surface 22, and at the same time, the attachment ability of the flowing sulfur vapor to each part of the first guiding surface 22 is also different due to the different relative slopes, which will cause the first guiding surface 22 to be locally overburdened. Therefore, in some embodiments, the conical surface is preferably provided as a circular conical surface, that is, the vertex of the conical surface is located on the opening axis.

[0044] It should be noted that the circular conical surface in the present application is regarded as a plane, that is, a cross section is obtained along one radial direction of the opening. If the first guiding surface 22 is a straight line, the first guiding surface 22 can be regarded as a plane.

[0045] Preferably, the angle between the first guiding surface 22 and the opening axis can be set to 55°-75°, so that the first guiding surface 22 can have a good guiding effect and the sulfur vapor can have a good attachment ability to the first guiding surface 22, thereby accelerating the liquefaction rate of the sulfur vapor.

[0046] Since the top cover 10 in the embodiment of the present application is in abutment sealing with the sampling container, the top cover 10 itself should have a relatively large gravity to ensure good sealing performance, and in some embodiments, the material of the top cover 10 can be set as steel. Specifically, the overall shape of the top cover 10 can be set as a circular cone shape that is adapted to the shape of the bottom surface and the opening, and the side surface of the top cover 10 serves as the first flow guide surface 22. When the top cover 10 is matched with the sampling container, the first flow guide surface 22 is in abutment with the sealing ring 16, and the edge of the first flow guide surface 22 has a spacing with the sealing ring 16 in the opening axial direction. When the first flow guide surface 22 is in abutment with the sealing ring 16, the second flow guide surface 23 on the flange is also in abutment with the sealing ring 16. At this time, the first flow guide surface 22, the second flow guide surface 23 and the sealing ring 16 can be enclosed to form a closed storage gap 24. When the sulfur vapor accidentally leaks into the storage gap 24, it will be liquefied in the storage gap 24 due to the relatively sealed environment of the storage gap 24. If the sulfur vapor continues to leak out of the storage gap 24, the storage gap 24 will slow down the sulfur vapor, i.e. reduce the flow rate of the sulfur vapor flowing out of the storage gap 24. In this way, the sulfur vapor can better adhere to the second flow guide surface 23 and be liquefied, thereby avoiding the diffusion of a large amount of sulfur vapor into the air.

[0047] It can be understood that the first flow guide surface 22 and the second flow guide surface 23 in the embodiment of the present application form abutment sealing with the sealing ring 16. In general, the intersection structure is, for example, a sealing groove is formed on the top cover 10 and is adapted to the sealing ring 16. The structure of the top cover 10 provided in the embodiment of the present application is more convenient during matching. The first flow guide surface 22 and the second flow guide surface 23 can both play a certain guiding role, reducing the positioning requirements of the top cover 10 relative to the sampling container. For example, a sealing plane is arranged on the top cover 10 and is in abutment with the sealing ring 16. The second flow guide surface 23 and the first flow guide surface 22, the second flow guide surface 23 and the sealing ring 16 form the storage gap 24 in the embodiment of the present application, which can more reliably prevent the diffusion of sulfur vapor into the air. At the same time, the abutment of the first flow guide surface 22 and the second flow guide surface 23 with the sealing ring 16 forms two seals in front and back, and the sealing performance is also more reliable.

[0048] In the embodiment of the present application, the second flow guide surface 23 can also be set as a curved surface, i.e. the flange can be bent towards the direction close to the sampling container, i.e. the second flow guide surface 23 can be set as a concave surface. Preferably, the flange can even be constructed as a curled edge structure. The sulfur vapor is not easy to diffuse under the guidance of the curled edge structure, and the liquefied sulfur vapor can also be collected by the curled edge structure, improving the safety of the use of the equipment.

[0049] In some embodiments, since the material of the top cover 10 is steel, a lifting device can be configured to the top cover 10 to facilitate the operation of the top cover 10 by the staff. Specifically, the lifting device can be installed on the sampling container, and the lifting device can include an L-shaped support rod 7, a pulley and a winch can be arranged on the L-shaped support rod 7, and the cable 9 of the winch is connected with the pulley and then connected with the top cover 10. When the top cover 10 needs to be opened, the winch is operated to rewind the cable 9, so that the top cover 10 is lifted.

[0050] As described above, since the top cover 10 is connected with the cable 9, and the top cover 10 has a relatively large weight, the top cover 10 may

[0051] In some embodiments, the heat preservation device can include a controller 14, a sensor 15, a heat exchange pipe 13 and a proportional flow meter 11; the sensor 15 is connected with the controller 14, the sensor 15 is installed on the sampling container and used to monitor the temperature of the gaseous sulfur at the first flow guide surface 22; the heat exchange pipe 13 is arranged in the heat exchange cavity to absorb the heat of the top cover 10; the proportional flow meter 11 is arranged in the heat exchange pipe 13 to control the flow of the heat exchange medium in the heat exchange pipe 13, and the proportional flow meter 11 is controlled by the controller 14 to act.

[0052] The heat preservation device can be arranged in the heat preservation cavity in the following manner: the heat exchange pipe inlet and the heat exchange pipe outlet 8 are arranged in the recess of the upper end cone respectively, the heat exchange pipe 13 is arranged in the heat preservation cavity, one end of the heat exchange pipe 13 passes through the heat exchange pipe outlet 8 and extends out of the heat preservation cavity and communicates with the outside space, the other end of the heat exchange pipe 13 passes through the heat exchange pipe inlet and extends out of the heat preservation cavity and is connected with the instrument air tank 12, and the heat exchange pipe 13 and the upper end cone can be connected in a sealing manner to prevent the air in the heat preservation cavity from circulating with the outside air and causing heat loss. The proportional flow meter 11 is arranged between the instrument air tank 12 and the heat exchange pipe 13, and the proportional flow meter 11 is controlled to act by the controller 14. The sensor 15 can be arranged on the first flow guide surface 22 to directly monitor the surface temperature of the first flow guide surface 22, and the sensor 15 is externally provided with a corrosion-resistant shell. The temperature value fed back by the sensor 15 can be used by the controller 14 to control the proportional flow meter 11 in real time by using the common PID algorithm to change the flow in the heat exchange pipe 13, so that the temperature in the heat preservation cavity is maintained at 128-132°C, and it is ensured that the sulfur vapor can be condensed into liquid sulfur yellow. For example, when it is detected that the temperature is too high, it indicates that the sulfur vapor may not be completely condensed into liquid sulfur yellow, at this time, the opening of the proportional flow meter 11 needs to be increased by the controller 14, the instrument air in the instrument air tank 12 enters the inside of the top cover 10, the instrument air after heat exchange is discharged to the atmosphere, and the whole process can cool the top cover 10. When the temperature sensor 15 detects that the temperature is too low, it indicates that the liquid sulfur yellow may be frozen on the first flow guide surface 22 of the top cover 10, at this time, the opening of the proportional flow meter 11 needs to be reduced or closed by the controller 14.

[0053] The heat exchange pipe 13 can be a vortex refrigeration pipe. The vortex refrigeration pipe is a cylindrical closed container, which is composed of a nozzle, a vortex chamber, a separation hole plate, a pipe and a control valve. The vortex chamber is in the middle, the pipe is divided into cold and hot ends, the nozzle is arranged tangentially along the vortex chamber, the hole plate is between the vortex chamber and the cold end pipe, and the control valve is installed at the outlet of the hot end pipe. The vortex refrigeration pipe 13 takes the instrument air tank 12 as a power source, the instrument air is separated into hot air and cold air by high-speed rotation from bottom to top in the vortex refrigeration pipe 13, the hot air is discharged from the upper end, the cold air is discharged downward through the hole plate in the center of the vortex pipe, the cold air enters the pipe section in the top cover 10 to cool the top cover 10, and the cold air after heat exchange is discharged to the air.

[0054] In order to increase the heat exchange time of the instrument air in the heat preservation cavity, in some embodiments, the part of the heat exchange pipe 13 in the heat exchange cavity can be arranged in a serpentine shape. The serpentine shape can lengthen the time of the instrument air in the heat preservation cavity, thereby increasing the heat exchange amount and improving the heat preservation effect of the heat preservation cavity.

[0055] In some embodiments, the sealing ring 16 can be a fluororubber ring or a nitrile rubber ring.

[0056] In some embodiments, the sampling container can specifically include an inner wall 6 and an outer wall 4, a sealed heat tracing cavity is formed between the inner wall 6 and the outer wall 4, and a steam inlet and a steam outlet are arranged on the outer wall 4 and communicate with the heat tracing cavity. By introducing high-temperature steam into the heat tracing cavity, solidification of the liquid sulfur in the sampling container can be prevented, so that normal collection of the liquid sulfur can be realized.

[0057] Of course, before entering the sampling container and after leaving the sampling container, the liquid sulfur will inevitably exchange heat with the outside world, resulting in solidification of the liquid sulfur, and the solidified sulfur will block the pipeline / channel. Therefore, in some embodiments, the liquid sulfur sampling system can further include a heat tracing sleeve 3; the heat tracing sleeve 3 includes a first pipe body and a second pipe body, one end of the first pipe body communicates with the input port or the output port, and the other end is used to connect the liquid sulfur supply device or the liquid sulfur collection device, the second pipe body is spacedly sleeved on the first pipe body, and one end of the second pipe body is sealingly connected with the first pipe body to form a heat tracing gap, the other end of the second pipe body communicates with the steam well mouth or the steam outlet, and the second pipe body is further used to access the steam circulation system to make the steam flow into / out of the heat tracing gap.

[0058] In the embodiments of the present application, the heat tracing sleeve 3 is essentially used as the liquid sulfur inlet pipeline and the liquid sulfur outlet pipeline of the sampling container, wherein the first pipe body flows the liquid sulfur, and the heat tracing gap between the first pipe body and the second pipe body flows the high-temperature steam. One end of the second pipe body can be welded with the steam inlet / steam outlet on the outer wall 4, and one end of the first pipe body can be welded with the input port / output port on the inner wall 6; the other end of the second pipe body can be sealingly connected with the pipe opening of the first pipe body through the flange 18, and the pipe body of the second pipe body can access the steam circulation system through the steam inlet pipeline 17 or the steam outlet pipeline 21. Specifically, a welding circular groove suitable for the pipe opening of the first pipe body and the second pipe body can be formed on the flange 18, and then the first pipe body and the second pipe body are welded on the flange 18 respectively, and then the flange 18 is connected with the jacket flange 2 on the liquid sulfur input pipeline or the liquid sulfur delivery pipeline 1. In this way, the liquid sulfur in the first pipe body will not solidify in the high-temperature environment surrounded by steam, ensuring the smoothness of the first pipe body and preventing the first pipe body from being blocked.

[0059] In some embodiments, a filter 5 can be arranged in the sampling container to filter impurities in the liquid sulfur. Specifically, a support sheet 19 can be fixedly arranged on the inner wall 6, and the filter 5 can be placed on the support sheet 19.

[0060] In some embodiments, support columns 20 can be welded between the inner wall 6 and the outer wall 4 to ensure the structural strength of the sampling container.

[0061] In summary, the liquid sulfur sampling system provided by the embodiments of the present application can improve the temperature of the liquid sulfur during sampling and refluxing by using the heat tracing sleeve 3, the top cover 10, and the heat preservation device in the top cover 10, so as to avoid the liquid sulfur from condensing into solid sulfur and blocking the pipeline and the sampling device; the temperature of the top cover 10 can be automatically controlled to ensure that the sulfur vapor condenses into liquid sulfur at the top cover 10, and avoid the liquid sulfur from solidifying at the top cover 10; the conical top cover 10 is configured to enable the liquid sulfur to finally drop to the liquid sulfur conveying pipeline 1 under the action of gravity; the anti-sulfur corrosion sealing ring 16 arranged at the top of the outer wall 4 enables the outer wall 4 edge and the inside of the solid top cover 10 to better adhere to each other, so as to avoid the diffusion of sulfur vapor into the air, and the first flow guide surface 22 and the second flow guide surface 23 can further prevent the diffusion of the sulfur vapor that accidentally leaks into the air; the liquid sulfur finally refluxes to the process pipeline to realize a closed loop and does not need to be separately discharged; the entire system has strong adaptability to working conditions and is more economical, simple, efficient, and fast.

[0062] The above detailed description further describes the purpose, technical solutions, and beneficial effects of the present application, and it should be understood that the above description is only a specific implementation of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A liquid sulfur sampling system, comprising: The application relates to a sampling container for liquid sulfur, which comprises: a sampling container with an open end, wherein a sealing ring (16) is arranged on the edge of the open end, and input and output ports for liquid sulfur are arranged on the sampling container; a top cover (10) with an edge matched with the edge of the open end, wherein the edge of the top cover (10) extends to the middle to form a first flow guide surface (22) at an angle with the axis of the open end, the first flow guide surface (22) is configured to guide liquid droplets close to the edge of the open end to a position far away from the edge of the open end in the axial direction of the open end, all the first flow guide surfaces (22) are conical surfaces, and a heat preservation cavity is arranged in the top cover (10), and a heat preservation device is arranged in the heat preservation cavity; a ring wing with an inner side connected with the edge of the top cover (10), wherein a second flow guide surface (23) is arranged on the ring wing, and the second flow guide surface (23) is configured to guide liquid droplets close to the edge of the open end to a position far away from the edge of the open end in the axial direction of the open end; wherein the first flow guide surface (22) of the top cover (10) and the second flow guide surface (23) of the ring wing respectively abut against the sealing ring (16); wherein the heat preservation device comprises: a controller (14); a sensor (15) connected with the controller (14), wherein the sensor (15) is arranged on the sampling container and is used for monitoring the temperature of gaseous sulfur at the first flow guide surface (22); a heat exchange pipe (13) arranged in a heat exchange cavity to absorb heat of the top cover (10); a proportional flow meter (11) arranged on the heat exchange pipe (13) to control the flow of heat exchange medium in the heat exchange pipe (13), wherein the proportional flow meter (11) is controlled by the controller (14).

2. The liquid sulfur sampling system of claim 1, wherein, The conical surface is a circular conical surface.

3. The liquid sulfur sampling system of claim 1, wherein, The angle between the first flow guide surface (22) and the axis of the open end is 55-75 degrees.

4. The liquid sulfur sampling system of claim 1, wherein, A lifting device is further arranged on the sampling container, and a lifting end of the lifting device is connected with the top cover (10).

5. The liquid sulfur sampling system of claim 1, wherein, The part of the heat exchange pipe (13) in the heat exchange cavity is in a serpentine shape.

6. The liquid sulfur sampling system of claim 1, wherein, The sealing ring (16) is a fluororubber ring or a butadiene rubber ring.

7. The liquid sulfur sampling system of claim 1, wherein, The sampling container comprises an inner wall (6) and an outer wall (4), a closed heat tracing cavity is formed between the inner wall (6) and the outer wall (4), and a steam inlet and a steam outlet are arranged on the outer wall (4) and communicate with the heat tracing cavity.

8. The liquid sulfur sampling system of claim 1, wherein, A heat tracing sleeve (3) is further arranged; The heat tracing sleeve (3) comprises a first pipe body and a second pipe body, one end of the first pipe body communicates with the input port or the output port, and the other end of the first pipe body is used for connecting a liquid sulfur supply device or a liquid sulfur collection device, the second pipe body is arranged on the first pipe body in a spaced mode, one end of the second pipe body is sealingly connected with the first pipe body to form a heat tracing gap, the other end of the second pipe body communicates with the steam inlet or the steam outlet, and the second pipe body is further used for being connected into a steam circulation system to make steam flow into or out of the heat tracing gap.

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