Sulfur production system
By installing multiple heating cables and pressure-resistant stainless steel pipes aligned with the pipeline's extension direction on the outer wall of the sulfur pipeline, combined with a purging pipe and temperature measuring device, the problems of uneven heating and expansion damage in the sulfur pipeline were solved, thus achieving safety and stability in sulfur transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SENNICS CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-12
AI Technical Summary
Existing sulfur pipelines are prone to expansion and damage during the heating process, and the heating is uneven, especially at bends where weak points are likely to appear, leading to pipeline expansion and damage.
Multiple heating cables are installed on the outer wall of the sulfur pipeline. Each heating cable extends in the same direction as the pipeline and covers the entire pipeline, including bends. The cable is made of 2520 stainless steel with a pressure resistance rating of 4.0MPa or higher and is equipped with a purge pipe and a temperature measuring device. Uniform heating and temperature monitoring are achieved through a control system.
This avoids damage to sulfur pipelines caused by uneven heating and expansion of solidified materials, reduces the risk of pipeline expansion damage, and improves the safety and stability of sulfur transportation.
Smart Images
Figure CN224221290U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sulfur production technology, and more specifically, to a sulfur production system. Background Technology
[0002] Currently, high-temperature sulfur transportation typically uses seamless 2520 stainless steel pipes of varying pressure ratings for unidirectional transport. The pipes are externally spirally wound (e.g., Figure 1 The heating cable (as shown) is insulated.
[0003] However, the above methods often have the following problems:
[0004] After the sulfur pipeline solidifies, it is prone to expansion when heated again, which can cause damage to the pipeline equipment. In addition, the spiral winding design has different spacing between heating wires, with more heating wires on the inner arc and fewer on the outer arc at bends, resulting in uneven heating of the pipeline, which can also lead to expansion and damage to the sulfur pipeline. Utility Model Content
[0005] The purpose of this invention is to provide a sulfur production system to solve or improve the aforementioned technical problems.
[0006] This utility model can be implemented as follows:
[0007] In a first aspect, this utility model provides a sulfur production system, which includes a sulfur storage container, a sulfur pipeline, and a sulfur quenching reaction device; the sulfur storage container and the sulfur quenching reaction device are connected by the sulfur pipeline.
[0008] The outer wall of the sulfur pipeline is equipped with multiple heating cables, which are distributed along the circumference of the sulfur pipeline. The extension direction of each heating cable is consistent with the extension direction of the sulfur pipeline.
[0009] In an optional embodiment, the end of the sulfur pipeline connected to the sulfur storage container is the inlet end of the sulfur pipeline, and the inlet end of the sulfur pipeline is equipped with a sulfur delivery pump.
[0010] In an optional embodiment, the sulfur production system further includes a purge pipe, one end of which is connected to a purge gas storage container, and the other end of which is connected to the inlet end of a sulfur pipeline.
[0011] In an optional implementation, the sulfur production system also includes a reflux or venting pipeline;
[0012] One end of the return or venting line is connected to the lowest end of the sulfur pipeline, and the other end of the return or venting line is connected to the sulfur storage container.
[0013] In an optional implementation, the sulfur production system also includes a temperature measuring device;
[0014] The temperature measuring device is connected to the sulfur pipeline and used to measure the temperature of the sulfur pipeline.
[0015] In an optional embodiment, at least one temperature measuring device is provided at the lowest end of the sulfur pipeline.
[0016] In an optional implementation, the temperature measuring device is connected to the sulfur pipeline in a wall-mounted manner.
[0017] In an optional implementation, the sulfur production system also includes a control system, with heating cables and temperature measuring devices electrically connected to the control system.
[0018] In an optional embodiment, a first valve and a second valve are respectively provided at both ends of the sulfur pipeline.
[0019] In an optional embodiment, a third valve is provided at the end of the purge pipe that connects to the sulfur pipeline;
[0020] A fourth valve is provided at the end of the reflux or vent pipeline that is connected to the sulfur storage container.
[0021] The beneficial effects of this utility model include:
[0022] The sulfur production system provided by this utility model has multiple heating cables installed on the outer wall of the sulfur pipeline. The multiple heating cables are distributed along the circumference of the sulfur pipeline, and the extension direction of each heating cable is consistent with the extension direction of the sulfur pipeline.
[0023] The heating cable with the above-mentioned configuration can cover the entire pipeline, including bends, which can avoid the possibility of expansion and damage at weak points such as bends. It avoids or improves the problem that the heating cable is spirally wound in the prior art, which easily leads to uneven heating and local overheating of sulfur pipelines, thereby reducing the risk of expansion and damage to sulfur pipelines. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the spiral winding method of heating cables on the outer wall of sulfur pipes in the prior art;
[0026] Figure 2 A schematic diagram of the sulfur production system provided by this utility model;
[0027] Figure 3 A schematic diagram of the heating cable installed on the straight section of the outer wall of the sulfur pipeline in this utility model from a first-view perspective;
[0028] Figure 4 This is a schematic diagram of the heating cable installed on the straight section of the outer wall of the sulfur pipeline in this utility model from a second perspective.
[0029] Icons: 100 - Sulfur production system; 110 - Sulfur storage container; 120 - Sulfur pipeline; 130 - Sulfur quenching reaction equipment; 140 - Heating cable; 150 - Sulfur transfer pump; 160 - Purge pipe; 161 - Purge gas storage container; 170 - Return or vent pipeline; 180 - Temperature measuring device; 191 - First valve; 192 - Second valve; 193 - Third valve; 194 - Fourth valve. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.
[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0035] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0036] Example
[0037] This embodiment provides a sulfur production system 100, such as... Figure 2 As shown, it includes a sulfur storage container 110, a sulfur pipeline 120, and a sulfur quenching reaction device 130; the sulfur storage container 110 and the sulfur quenching reaction device 130 are connected by the sulfur pipeline 120.
[0038] Preferably, the sulfur pipeline is made of 2520 stainless steel with a pressure resistance rating of 4.0MPa or higher.
[0039] Multiple heating cables 140 are installed on the outer wall of the sulfur pipe 120, and the multiple heating cables 140 are distributed circumferentially along the sulfur pipe 120 (e.g., Figure 3 Each heating cable 140 extends in the same direction as the sulfur pipe 120 (e.g., Figure 4 ).
[0040] The above-mentioned cable arrangement can be understood as follows: for the straight section of the sulfur pipe 120, the multiple heating cables 140 arranged on its outer wall are parallel to each other, and each heating cable 140 is also parallel to the sulfur pipe 120; for the curved section of the sulfur pipe 120, the multiple heating cables 140 arranged on its outer wall are consistent with the bending direction of the sulfur pipe 120 in that curved section, and the multiple heating cables 140 do not cross or overlap each other.
[0041] As mentioned above, the heating cable 140 of the above form can cover the entire pipeline, including the bends, which can avoid the possibility of expansion and damage at weak points such as bends. It avoids or improves the problem that the heating cable 140 is spirally wound in the prior art, which easily leads to uneven heating and local overheating of the sulfur pipeline 120, thereby reducing the risk of expansion and damage to the sulfur pipeline 120.
[0042] In this embodiment, the end of the sulfur pipeline 120 connected to the sulfur storage container 110 is defined as the inlet end of the sulfur pipeline 120, and the end of the sulfur pipeline 120 connected to the sulfur quenching reaction equipment 130 is defined as the outlet section.
[0043] The sulfur pipeline 120 is equipped with a sulfur delivery pump 150 at its inlet end. By setting up the sulfur delivery pump 150, the sulfur in the sulfur storage container 110 is pumped into the sulfur pipeline at a suitable pressure, ensuring the continuity, stability and safety of sulfur delivery.
[0044] In this embodiment, a first valve 191 and a second valve 192 are respectively provided at both ends of the sulfur pipeline 120. More specifically, a first valve 191 is provided at the end of the sulfur pipeline 120 connected to the sulfur delivery pump 150, and a second valve 192 is provided at the end of the sulfur pipeline 120 connected to the sulfur quenching reaction equipment 130.
[0045] In this embodiment, the sulfur production system 100 also includes a purge pipe 160, one end of which is connected to a purge gas storage container 161, and the other end of which is connected to the inlet end of a sulfur pipeline 120.
[0046] A third valve 193 is provided at one end of the purge pipe 160 that connects to the sulfur pipe 120.
[0047] In this embodiment, the sulfur production system 100 also includes a reflux or venting pipeline 170; one end of the reflux or venting pipeline 170 is connected to the lowest end of the sulfur pipeline 120, and the other end of the reflux or venting pipeline 170 is connected to the sulfur storage container 110.
[0048] The end of the aforementioned reflux or venting pipeline 170 that is connected to the sulfur storage container 110 is provided with a fourth valve 194.
[0049] In practical use, when the sulfur pipeline is shut down, nitrogen gas can be blown into the sulfur pipeline 120 through the purge pipe 160 for purging. During purging, the temperature of the sulfur pipeline 120 should be reduced to between 120℃ and 150℃, the nitrogen flow rate should be no less than 3m / s, and the nitrogen pressure should be no less than 0.2MPa. A reciprocating pressure-reducing method is preferred for pipeline purging to ensure that the material in the sulfur pipeline is purged as thoroughly as possible.
[0050] Continuing from the above, by setting up the purge pipe 160 and the return or venting pipe 170, it is possible to avoid the situation in the prior art where the sulfur pipeline is filled with material after solidification and then heated again. This material will expand after heating, which may lead to pipeline weld breakage or material leakage and fire at the flange.
[0051] In this embodiment, the sulfur production system 100 also includes a temperature measuring device 180; the temperature measuring device 180 is connected to the sulfur pipeline 120 and is used to measure the temperature of the sulfur pipeline 120.
[0052] The temperature measuring device 180 may be, by way of example, a temperature sensor.
[0053] In some preferred embodiments, at least one temperature measuring device 180 is provided at the lowest end of the sulfur pipe 120.
[0054] In a preferred embodiment, the temperature measuring device 180 is connected to the sulfur pipe 120 in a wall-mounted manner.
[0055] Since the lowest end of the sulfur pipe 120 is the area where materials are most likely to accumulate, this embodiment uses a wall-mounted connection to install at least one temperature measuring device 180 in this area, which can effectively monitor the temperature change of the pipe in this area (material accumulation area) to prevent the sulfur accumulated in this area from solidifying and expanding due to heating during subsequent restart, which could cause the sulfur pipe 120 in this area to burst and be damaged.
[0056] Furthermore, the sulfur production system 100 provided in this embodiment also includes a control system (not shown), and the heating cable 140 and the temperature measuring device 180 are all electrically connected to the control system.
[0057] Alternatively, the electrical connection described above can be a wired electrical connection or a wireless connection.
[0058] In this embodiment, the heating cable 140 is electrically connected to the control system. The control system controls the heating cable 140 according to a built-in program, causing the heating cable 140 to heat according to a preset heating program. A temperature measuring device 180 is connected to the control system so that the temperature sensor transmits the measured temperature data to the control system. The control system can then control and adjust the heating temperature of the heating cable 140 based on the obtained temperature data.
[0059] It should be noted that the principles and connection details of the control system can be found in existing technologies, which are mature technologies and will not be elaborated upon here.
[0060] The heating rate has a direct impact on the reliability of the sulfur pipeline 120. In this embodiment, the heating program in the control system preferably adopts a three-stage temperature control program, wherein the first stage is to keep the temperature at 150℃ for at least 2 hours, the second stage is to keep the temperature at 300℃ for at least 2 hours, and the third stage is to keep the temperature at 500℃ for at least 2 hours, and the heating rate of each stage does not exceed 30℃ / h.
[0061] For example, when a heating cable 140 is installed on the outer wall of the sulfur pipe 120 as provided in this embodiment, and the sulfur pipe 120 is made of 2m long 2520 stainless steel with a pressure resistance rating of 2.5MPa, after the stainless steel pipe is filled with sulfur and then heated to 550°C at a heating rate of 30°C / h with both ends sealed, obvious thickening and deformation can be seen in the middle area of the stainless steel pipe, with a pipe diameter deformation of 3% to 5%. However, when a 2m long 2520 stainless steel pipe with a pressure resistance rating of 4.0MPa is used, and the same heating rate of 30°C / h is applied to 550°C, the pipe diameter does not change significantly. In addition, a 2m long 2520 stainless steel pipe with a pressure resistance rating of 4.0MPa is used. The temperature is raised according to a three-stage temperature control program. The first stage is held at 150℃ for at least 2 hours, the second stage is held at 300℃ for at least 2 hours, and the third stage is held at 500℃ for at least 2 hours. The heating rate of each stage does not exceed 30℃ / h, and the diameter deformation of the stainless steel pipe is <1%.
[0062] In summary, the sulfur production system 100 provided by this utility model features multiple heating cables 140 arranged on the outer wall of the sulfur pipeline 120. These heating cables 140 are distributed circumferentially along the sulfur pipeline 120, with each cable extending in the same direction as the pipeline. This arrangement of heating cables 140 can cover the entire pipeline, including bends, preventing expansion damage at weak points such as bends. It also avoids or improves upon the problem in the prior art where the heating cables 140 are spirally wound, which easily leads to uneven heating and localized overheating of the sulfur pipeline 120, thereby reducing the risk of expansion damage to the sulfur pipeline 120.
[0063] By using the purge pipe 160 and the return or venting pipe 170, the existing technology can avoid the situation where the sulfur pipeline is filled with material after solidification and reheating. This material will expand after heating, which may lead to pipeline weld breakage or material leakage and fire at the flange.
[0064] By installing at least one temperature measuring device 180 at the lowest end of the sulfur pipe 120 using a wall-mounted connection, the temperature change of the pipe in this area (material accumulation area) can be effectively monitored. This is to prevent the sulfur accumulated in this area from solidifying and expanding due to heating during subsequent restarts, which could cause the sulfur pipe 120 in this area to burst and be damaged.
[0065] Therefore, the sulfur production system 100 provided by this utility model ensures the expansion space of the sulfur pipeline and standardizes the temperature control of the sulfur pipeline, avoiding the possibility of the sulfur pipeline rupture due to the thermal expansion of sulfur. In addition, the automation of temperature control reduces the possibility of human error.
[0066] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A sulfur production system, characterized in that, It includes a sulfur storage container, a sulfur pipeline, and a sulfur quenching reaction device; the sulfur storage container and the sulfur quenching reaction device are connected by the sulfur pipeline; The outer wall of the sulfur pipe is provided with multiple heating cables, which are distributed along the circumference of the sulfur pipe, and the extension direction of each heating cable is consistent with the extension direction of the sulfur pipe.
2. The sulfur production system according to claim 1, characterized in that, The end of the sulfur pipeline connected to the sulfur storage container is the inlet end of the sulfur pipeline, and the inlet end of the sulfur pipeline is equipped with a sulfur delivery pump.
3. The sulfur production system according to claim 2, characterized in that, The sulfur production system also includes a purge pipe, one end of which is connected to a purge gas storage container, and the other end of which is connected to the inlet end of the sulfur pipeline.
4. The sulfur production system according to claim 3, characterized in that, The sulfur production system also includes a reflux or venting pipeline; One end of the reflux or venting pipeline is connected to the lowest end of the sulfur pipeline, and the other end of the reflux or venting pipeline is connected to the sulfur storage container.
5. The sulfur production system according to claim 1, characterized in that, The sulfur production system also includes a temperature measuring device; The temperature measuring device is connected to the sulfur pipeline and is used to measure the temperature of the sulfur pipeline.
6. The sulfur production system according to claim 5, characterized in that, At least one of the temperature measuring devices is provided at the lowest end of the sulfur pipeline.
7. The sulfur production system according to claim 5 or 6, characterized in that, The temperature measuring device is connected to the sulfur pipeline in a wall-mounted manner.
8. The sulfur production system according to claim 6, characterized in that, The sulfur production system also includes a control system, and the heating cable and the temperature measuring device are both electrically connected to the control system.
9. The sulfur production system according to claim 1, characterized in that, The sulfur pipeline is equipped with a first valve and a second valve at each end.
10. The sulfur production system according to claim 4, characterized in that, A third valve is provided at the end of the purge pipe that connects to the sulfur pipeline; The end of the reflux or venting pipeline that is connected to the sulfur storage container is provided with a fourth valve.