Liquid sulfur sampling system

Abstract

The invention relates to the technical field of petrochemical engineering, in particular 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 of 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 edge of the opening in shape, the edge of the top cover extends towards the middle to form a first flow guide face forming an included angle with the axis of the opening, the first flow guide face is configured to guide liquid drops close to the edge of the opening to the 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, a second flow guide surface is arranged on the ring wing, and the second flow guide surface is configured to guide liquid drops close to the edge of the opening to the position away from the edge of the opening in the axial direction of the opening; the first flow guide face of the top cover and the second flow guide face of the ring wing abut against the sealing ring. According to the invention, sulfur curing in the collection process can be prevented, and sulfur vapor can be prevented from diffusing into air.

Description

Technical Field

[0001] This invention relates to the field of petrochemical technology, and more specifically, to a liquid sulfur sampling system. Background Technology

[0002] In the petrochemical industry, it is necessary to recover and treat sulfur-containing substances generated during production processes to meet environmental protection requirements. The Claus process is commonly used in sulfur recovery. In a reactor, one-third of the volume of H2S is oxidized to SO2. The remaining two-thirds of the volume of H2S reacts with the one-third volume of SO2 to produce elemental sulfur. The tail gas after the reaction undergoes catalytic conversion and condensation processes to condense liquid sulfur at approximately 132°C. The liquid sulfur then passes through sulfur sealing and sampling devices before being transported to a liquid sulfur storage facility.

[0003] Chinese utility model patent CN211946276U discloses a device for recovering solid sulfur containing impurities from spilled surfaces. The device includes: a recovery container with an inner cavity for holding the spilled solid sulfur containing impurities; a heating chamber arranged around the inner cavity of the recovery container for heating the spilled solid sulfur and liquefying it; the heating chamber is used to introduce a heating fluid and / or has a heating element arranged within it; a filter screen detachably installed in the inner cavity of the recovery container for supporting the spilled solid sulfur and allowing liquid sulfur to pass through and filter out impurities during liquefaction; and a liquid sulfur collection structure located below the filter screen. After being heated and filtered to remove impurities, the liquid sulfur is collected by the liquid sulfur collection structure, thus achieving recovery. However, the process of heating sulfur into a liquid state is usually accompanied by the generation of sulfur vapor. This sulfur vapor flows upward and accumulates at the top cover, accelerating the corrosion rate of the top cover. If it escapes from the recovery container, it will pollute the environment and, in severe cases, threaten the personal safety of workers. Summary of the Invention

[0004] This invention provides a liquid sulfur sampling system that promotes sulfur vapor liquefaction by maintaining the temperature of the top cover, and uses a combination of a flow guiding structure and a sealing structure to prevent sulfur vapor from escaping from the recovery container while inhibiting the diffusion of sulfur vapor in the air to a certain extent, thereby slowing down the corrosion rate of the top cover and preventing environmental pollution.

[0005] This invention is achieved through the following technical solution:

[0006] A liquid sulfur sampling system, comprising:

[0007] A sampling container, one end of which is open, and a sealing ring is provided on the edge of the open end. The sampling container is also provided with an inlet and an outlet for liquid sulfur to enter and exit.

[0008] The top cover has an edge that is adapted to the shape of the edge of the opening. The edge of the top cover extends towards the center to form a first guide surface at an angle to the axis of the opening. The first guide surface is configured to guide 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 top cover also has a heat insulation cavity, and a heat insulation device is disposed in the heat insulation cavity.

[0009] The ring wing, whose inner side is connected to the edge of the top cover, is provided with a second guide surface, which is configured to guide 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.

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

[0011] In some implementations, all of the first guide surfaces are conical surfaces.

[0012] In some embodiments, the conical surface is a circular conical surface.

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

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

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

[0016] Controller;

[0017] A sensor connected to the controller is installed in the sampling container and used to monitor the temperature of gaseous sulfur at the first guide surface;

[0018] A heat exchange tube is disposed in the heat exchange cavity to absorb heat from the top cover;

[0019] A proportional flow meter is disposed on the heat exchange tube to control the flow rate of the heat exchange medium in the heat exchange tube, and the proportional flow meter is controlled by the controller.

[0020] In some embodiments, the portion of the heat exchange tube located in the heat exchange cavity is serpentine.

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

[0022] In some embodiments, the sampling container includes an inner wall and an outer wall, with a sealed heat tracing cavity formed between the inner wall and the outer wall, and a steam inlet and a steam outlet communicating with the heat tracing cavity are provided on the outer wall.

[0023] In some embodiments, the liquid sulfur sampling system also includes a heat tracing sleeve;

[0024] The heat tracing sleeve includes a first pipe body and a second pipe body. One end of the first pipe body is connected to the inlet or outlet, and the other end is used to connect to a liquid sulfur supply device or a liquid sulfur collection device. The second pipe body is spaced on the first pipe body and one end of the second pipe body is sealed to the first pipe body to form a heat tracing gap. The other end of the second pipe body is connected to the steam wellhead or steam outlet. The second pipe body is also used to connect to the steam circulation system so that steam flows in / out of the heat tracing gap.

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

[0026] 1. The present invention provides a liquid sulfur sampling system. By using a heat preservation device, the temperature of the top cover can be kept at a value that allows sulfur vapor to liquefy. When the sulfur vapor rises and contacts the top cover, heat exchange occurs to achieve liquefaction of the sulfur vapor. This prevents the sulfur vapor from accumulating in large quantities at the top cover, which would lead to an accelerated corrosion rate of the top cover. At the same time, the liquefied sulfur vapor forms liquid sulfur. Through the guiding effect of the first guide surface on the top cover, the droplets formed after liquefaction move away from the edge of the opening, thus forming a convergence effect. The converged liquid sulfur overcomes its surface tension under the action of gravity and drips into the sampling container, reducing the solidification phenomenon of liquid sulfur on the top cover.

[0027] 2. The liquid sulfur sampling system provided by the present invention forms two sealing positions after the first and second guide surfaces come into contact with the sealing ring. There is a certain gap between the two sealing positions. A small amount of sulfur vapor escaping from the recovery container can be liquefied in the gap, thereby preventing the sulfur vapor from diffusing into the air. If the amount of sulfur vapor escaping from the recovery container is large, the setting of the second guide surface can also accelerate the liquefaction speed of the sulfur vapor escaping from the gap, thereby preventing the sulfur vapor from diffusing into the air. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the liquid sulfur sampling system provided in an embodiment of the present invention;

[0030] Figure 2 This is a partial structural diagram of the top cover and sampling container in contact, as provided in an embodiment of the present invention.

[0031] The attached diagram shows the markings and corresponding component names:

[0032] 1-Liquid sulfur transport pipeline, 2-Jacketed flange, 3-Heat tracing sleeve, 4-Outer wall, 5-Filter, 6-Inner wall, 7-L-type support rod, 8-Heat exchange tube outlet, 9-Cable body, 10-Top cover, 7-11-Proportional flow meter, 12-Instrument air tank, 13-Heat exchange tube, 14-Controller, 15-Temperature sensor, 16-Sealing ring, 17-Steam inlet pipeline, 18-Flange, 19-Support plate, 20-Support column, 21-Steam outlet pipeline, 22-First guide surface, 23-Second guide surface, 24-Reservation gap. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0035] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes 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 this invention, the terms "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "high," "low," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0037] like Figures 1-2 As shown, this embodiment of the invention provides a liquid sulfur sampling system, which includes a sampling container, a top cover 10, and a ring wing. One end of the sampling container is open, and a sealing ring 16 is provided on the edge of the open. The sampling container also has an inlet and an outlet for liquid sulfur to enter and exit. The edge of the top cover 10 is adapted to the shape of the edge of the open, and the edge of the top cover 10 extends towards the center to form a first guide surface 22 at an angle to the axis of the open. The first guide surface 22 is configured to... The top cover 10 is equipped with a heat insulation chamber containing heat insulation equipment. The inner side of the ring wing is connected to the edge of the top cover 10, and a second guide surface 23 is provided on the ring wing. The second guide surface 23 is configured to guide the droplets near the edge of the opening to a position away from the edge of the opening in the axial direction of the opening. The first guide surface 22 of the top cover 10 and the second guide surface 23 of the ring wing respectively abut against the sealing ring 16.

[0038] In this embodiment, an annular sealing groove can be provided 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 is not limited, such as it can be square, round, triangular, etc. Therefore, the edge shape of the top cover 10 can also be a corresponding square, round, triangular, etc. For ease of implementation, the shape of the opening is preferably set to round.

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

[0040] Of course, in order to obtain a better guiding effect, the first guiding surface 22 is preferably set as a plane, so that the angle between the first guiding surface 22 and the open axis can be set to be small and constant, which is conducive to the flow of droplets on it.

[0041] Different droplets slide and converge under the guidance of different first guide surfaces 22. In order to enable the converged droplets to fall into the sampling container quickly and reduce the residence time of the droplets on the top cover 10, in some embodiments, the first guide surface 22 is set as a conical surface.

[0042] It is understood that in the embodiments of this application, the vertex of the conical surface does not necessarily have to be located on the opening axis. That is, for each part at the same height on the first guide surface 22, the angle between the first guide surface 22 and the opening axis can be continuously changing, for example, when the opening shape is circular; or it can be intermittently changing, for example, when the opening shape is square.

[0043] It is understandable that if the vertex of the cone is not located on the open axis, there will inevitably be a problem of one side having a large flow area and the other side having a small flow area. That is, the distribution of droplets on the first flow surface 22 is too uneven. At the same time, the adhesion ability of the flowing sulfur vapor to different parts of the first flow surface 22 is also different due to the different relative slopes. This will make the first flow surface 22 locally overburdened. Therefore, in some embodiments, it is preferable to set the cone as a circular cone, that is, the vertex of the cone is located on the open axis.

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

[0045] Preferably, the angle between the first guide surface 22 and the open axis can be set to 55° to 75°. This ensures that the first guide surface 22 has a good guiding effect and that the sulfur vapor has a good adhesion to the first guide surface 22, thereby accelerating the liquefaction rate of the sulfur vapor.

[0046] Since the top cover 10 and the sampling container in this embodiment are sealed by contact, the top cover 10 itself should have a large weight to ensure good sealing performance. In some embodiments, the material of the top cover 10 can be steel. Specifically, the overall shape of the top cover 10 can be a cone shape with the bottom surface adapted to the shape of the opening. The side of the top cover 10 serves as the first guide surface 22. When the top cover 10 is fitted with the sampling container, the first guide surface 22 contacts the sealing ring 16. The edge of the first guide surface 22 and the sealing ring 16 are spaced apart in the axial direction of the opening. When the first guide surface 22 contacts the sealing ring 16, the second guide surface 23 on the flange also contacts the sealing ring 16. At this time, the first guide surface 22, the second guide surface 23, and the sealing ring... The space between 16 can form a sealed retention gap 24. If sulfur vapor accidentally enters the retention gap 24, it will be trapped in the retention gap 24 due to the relatively sealed environment of the retention gap 24 and liquefy. If the sulfur vapor continues to escape from the retention gap 24, the retention gap 24 will slow down the sulfur vapor, that is, reduce the flow rate of the sulfur vapor flowing out of the retention gap 24. In this way, the sulfur vapor can better adhere to the second guide surface 23 and liquefy, thereby preventing the sulfur vapor from diffusing into the air in large quantities.

[0047] It is understood that in this embodiment, the first guide surface 22 and the second guide surface 23 form a contact seal with the sealing ring 16. Compared with a general structure, such as opening a sealing groove on the top cover 10 to fit the sealing ring 16, the top cover 10 structure provided in this embodiment is more convenient in the fitting process. The first guide surface 22 and the second 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, by setting a sealing plane on the top cover 10 to contact the sealing ring 16, the second guide surface 23 and the first guide surface 22, the second guide surface 23 and the sealing ring 16 form a gap 24 in this embodiment, which can more reliably prevent sulfur vapor from diffusing into the air. At the same time, the contact between the first guide surface 22 and the second guide surface 23 and the sealing ring 16 is equivalent to forming two seals, and the sealing performance is more reliable.

[0048] In this embodiment, the second guide surface 23 can also be configured as a curved surface, that is, the flange can be bent in the direction close to the sampling container, i.e., the second guide surface 23 can be configured as a concave surface. Preferably, the flange can even be constructed as a rolled edge structure, under the guidance of the rolled edge structure, sulfur vapor is not easy to diffuse, and after the sulfur vapor is liquefied, it can also be collected by the rolled edge structure, improving the safety of the equipment.

[0049] In some embodiments, since the top cover 10 is made of steel, a lifting device can be provided for the top cover 10 to facilitate operation by personnel. Specifically, the lifting device can be installed on the sampling container. The lifting device may include an L-shaped support rod 7, on which pulleys and a winch can be installed. The winch cable 9 is connected to the pulleys and then to the top cover 10. When it is necessary to open the top cover 10, the winch is operated to rewind the cable 9, thereby lifting the top cover 10.

[0050] Following the above, since the top cover 10 is connected to the cable body 9, and the top cover 10 has a large weight, it may overturn due to sliding during the lifting process. In order to ensure the stability of the top cover 10 during the lifting process, in some embodiments, the overall shape of the top cover 10 can be a combination of two cones, with the bottom surfaces of the two cones overlapping and the top of the upper cone connected to the cable body 9; the angle between the generatrix of the upper cone and its midline is set to 50° to 55°, and the angle between the generatrix of the lower cone and its midline can be set to 55° to 75° as mentioned above. At this point, the lower cone can be configured as a hollow structure. The pressure required for the top cover 10 to seal against the sealing ring 16 can be provided by the upper cone structure. That is, the lower cone can be configured as a thin-walled structure, and a groove of a certain size can be opened at the bottom of the upper cone. The cavity formed by the lower cone and the upper cone can serve as an insulation cavity. Due to the thin-walled structure, the heat exchange between the inside and outside of the lower cone is faster, which can accelerate the liquefaction rate of sulfur vapor on the first guide surface 22 and slow down the corrosion rate of the top cover 10.

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

[0052] The insulation equipment can be configured in the insulation cavity as follows: a heat exchange tube inlet and a heat exchange tube outlet 8 are respectively set in the groove of the upper cone. The heat exchange tube 13 is placed in the insulation cavity. One end of the heat exchange tube 13 passes through the heat exchange tube outlet 8 and exits the insulation cavity to communicate with the external space. The other end of the heat exchange tube 13 passes through the heat exchange tube inlet and exits the insulation cavity to connect with the instrument air tank 12. The heat exchange tube 13 and the upper cone can be sealed to prevent the air in the insulation cavity from circulating with the outside air and causing heat loss. A proportional flow meter 11 is configured between the instrument air tank 12 and the heat exchange tube 13. The proportional flow meter 11 is controlled by the controller 14. The sensor 15 can be set on the first guide surface 22 to directly monitor the surface temperature of the first guide surface 22. The sensor 15 should be equipped with a corrosion-resistant shell. Based on the temperature feedback from sensor 15, controller 14 can use a common PID algorithm to control proportional flow meter 11 in real time to change the flow rate in heat exchange tube 13, thereby maintaining the temperature inside the insulation cavity between 128℃ and 132℃. This ensures that sulfur vapor can condense into liquid sulfur. For example, if the temperature is detected to be too high, it indicates that the sulfur vapor may not be able to condense completely into liquid sulfur. In this case, controller 14 needs to increase the opening of proportional flow meter 11 to allow instrument air from instrument air tank 12 to enter 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 temperature sensor 15 detects that the temperature is too low, it indicates that liquid sulfur may solidify on the first guide surface 22 of the top cover 10. In this case, controller 14 needs to reduce or close the opening of proportional flow meter 11.

[0053] The heat exchange tube 13 can be specifically configured as a vortex refrigeration tube. The vortex refrigeration tube is a cylindrical, sealed container consisting of nozzles, a vortex chamber, a separation orifice plate, tubes, and a control valve. The vortex chamber is centrally located, dividing the tube into cold and hot ends. The nozzles are arranged tangentially along the vortex chamber. The orifice plate is located between the vortex chamber and the cold-end tube. A control valve is installed at the outlet of the hot-end tube. The vortex refrigeration tube 13 uses the instrument air tank 12 as its power source. The instrument air rotates at high speed from bottom to top within the vortex refrigeration tube 13, separating into hot and cold air. The hot air is discharged from the top, while the cold air is discharged downwards through the orifice plate in the center of the vortex tube. The cold air enters the tube section located inside the top cover 10 to cool the top cover 10. The cooled air after heat exchange is then discharged into the air.

[0054] In order to increase the heat exchange time of the instrument air in the insulation cavity, in some embodiments, the portion of the heat exchange tube 13 located in the heat exchange cavity can be configured as a serpentine shape. The serpentine shape can prolong the time the instrument air spends in the insulation cavity, thereby increasing the heat exchange capacity and improving the insulation effect of the insulation cavity.

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

[0056] In some embodiments, the sampling container may specifically include an inner wall 6 and an outer wall 4, forming a sealed heat-tracing cavity between the inner wall 6 and the outer wall 4. The outer wall 4 is provided with a steam inlet and a steam outlet communicating with the heat-tracing cavity. By introducing high-temperature steam into the heat-tracing cavity, the liquid sulfur in the sampling container can be prevented from solidifying, thereby enabling the normal collection of liquid sulfur.

[0057] Of course, before entering the sampling container and after leaving the sampling container, liquid sulfur will inevitably undergo heat exchange with the outside environment, causing the liquid sulfur to solidify. The solidified sulfur will block the pipes / channels. Therefore, in some embodiments, the liquid sulfur sampling system may also 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 is connected to the inlet or outlet, and the other end is used to connect to the liquid sulfur supply equipment or liquid sulfur collection equipment. The second pipe body is spaced on the first pipe body and one end of the second pipe body is sealed to the first pipe body to form a heat tracing gap. The other end of the second pipe body is connected to the steam wellhead or steam outlet. The second pipe body is also used to connect to the steam circulation system so that steam flows in / out of the heat tracing gap.

[0058] In this embodiment, the heat tracing sleeve 3 essentially serves as the liquid sulfur inlet and outlet pipelines of the sampling container. The first pipe body flows through liquid sulfur, and the heat tracing gap between the first and second pipe bodies allows for the flow of high-temperature steam. One end of the second pipe body can be welded to the steam inlet / outlet on the outer wall 4, and one end of the first pipe body can be welded to the inlet / outlet on the inner wall 6. The other end of the second pipe body can be sealed to the opening of the first pipe body via flange 18. The pipe body of the second pipe body can be connected to the steam circulation system via steam inlet pipeline 17 or steam outlet pipeline 21. Specifically, welding grooves adapted to the openings of the first and second pipe bodies can be respectively opened on flange 18. Then, the first and second pipe bodies are welded to flange 18, and then connected to the liquid sulfur inlet pipeline or the jacketed flange 2 on the liquid sulfur delivery pipeline 1 via flange 18. This ensures that the liquid sulfur in the first pipe body will not solidify in the high-temperature environment surrounded by steam, guaranteeing the unobstructed flow within the first pipe body and preventing blockage.

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

[0060] In some embodiments, a support column 20 may 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 in this application, employing a heat tracing sleeve 3, a top cover 10, and insulation equipment within the top cover 10, can increase the temperature of the liquid sulfur during sampling and reflux, preventing the liquid sulfur from condensing into solid sulfur and clogging pipelines and sampling devices; it can automatically control the temperature of the top cover 10, ensuring that sulfur vapor at the top cover 10 condenses into liquid sulfur, preventing the liquid sulfur from solidifying at the top cover 10; and the conical top cover 10 allows the liquid sulfur to be condensed under gravity. The liquid sulfur eventually drips into the liquid sulfur transport pipeline 1. An anti-sulfur corrosion sealing ring 16 is installed on the top of the outer wall 4 to better fit the edge of the outer wall 4 and the interior of the solid top cover 10, preventing sulfur vapor from diffusing into the air. At the same time, the first guide surface 22 and the second guide surface 23 can further prevent any accidentally leaked sulfur vapor from diffusing into the air. The liquid sulfur eventually flows back to the process pipeline, realizing a closed loop and eliminating the need for separate external discharge. The entire system has strong adaptability to operating conditions and is more economical, simple, efficient, and fast.

[0062] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A liquid sulfur sampling system, It is characterized in that include: A sampling container, wherein one end of the sampling container is an open structure, and a sealing ring (16) is arranged on the edge of the open structure, wherein the sampling container is also provided with an input port and an output port for liquid sulfur to enter and exit; A top cover (10), wherein the edge of the top cover (10) is adapted to the shape of the edge of the opening, the edge of the top cover (10) extends toward the middle to form a first guide surface (22) that is at an angle to the axis of the opening, the first guide surface (22) being configured to guide 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 chamber is further provided in the top cover (10), and a heat preservation device is provided in the heat preservation chamber; an annular wing, the inner side of which is connected to the edge of the top cover (10), the annular wing being provided with a second guide surface (23), the second guide surface (23) being configured to guide 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; Wherein, the first flow guide surface (22) of the top cover (10) and the second flow guide surface (23) of the ring wing are respectively in contact with the sealing ring (16).

2. The liquid sulfur sampling system according to claim 1, It is characterized in that All of the first flow guiding surfaces (22) are conical surfaces.

3. The liquid sulfur sampling system according to claim 2, It is characterized in that The conical surface is a conical surface.

4. The liquid sulfur sampling system according to claim 1, It is characterized in that The included angle between the first flow guide surface (22) and the open axis is 55° to 75°.

5. The liquid sulfur sampling system according to claim 2, It is characterized in that It also comprises a lifting device, which is installed on the sampling container, and the lifting movement end of the lifting device is connected to the top cover (10).

6. The liquid sulfur sampling system according to claim 2, It is characterized in that The heat preservation equipment comprises: Controller (14); a sensor (15) connected to the controller (14), the sensor (15) being installed in the sampling container and used to monitor the temperature of the gaseous sulfur at the first guide surface (22); A heat exchange tube (13), wherein the heat exchange tube (13) is arranged in the heat exchange cavity to absorb heat from the top cover (10); A proportional flow meter (11) is arranged on the heat exchange tube (13) to control the flow of the heat exchange medium in the heat exchange tube (13), and the proportional flow meter (11) is controlled by the controller (14).

7. The liquid sulfur sampling system according to claim 2, It is characterized in that The portion of the heat exchange tube (13) located in the heat exchange cavity is serpentine.

8. The liquid sulfur sampling system according to claim 2, It is characterized in that The sealing ring (16) is a fluororubber ring or a nitrile rubber ring.

9. The liquid sulfur sampling system according to claim 2, It is characterized in that The sampling container comprises an inner wall (6) and an outer wall (4), a closed heating chamber is formed between the inner wall (6) and the outer wall (4), and a steam inlet and a steam outlet which are in communication with the heating chamber are arranged on the outer wall (4).

10. The liquid sulfur sampling system according to claim 2, It is characterized in that Also includes a heating sleeve (3); The heating sleeve (3) comprises a first tube body and a second tube body, one end of the first tube body is connected to the input port or the output port, and the other end is used to connect to a liquid sulfur supply device or a liquid sulfur collection device, the second tube body is sleeved on the first tube body at intervals and one end of the second tube body is sealed and connected to the first tube body to form a heating gap, the other end of the second tube body is connected to the steam wellhead or the steam outlet, and the second tube body is also used to connect to a steam circulation system to allow steam to flow into / out of the heating gap.

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