Floating ball sulfur seal

Abstract

The utility model relates to the technical field of sulphur recovery equipment, specifically a floating ball type sulphur sealing device, including inner cylinder, the inner cylinder top part sets up cylinder top flange cover, the inner cylinder bottom part sets up cylinder bottom flange cover, the inner cylinder connects liquid sulphur inlet inner connector and liquid sulphur outlet inner connector respectively, the liquid sulphur outlet inner connector extends into the inside of inner cylinder, the liquid sulphur outlet inner connector extends into the inside of inner cylinder one end upper portion opening, and opening place fixedly connected with the communicating port, the communicating port is in communication with liquid sulphur outlet inner connector, the communicating port is slidably connected with the plunger, and the plunger can block the communicating port, and the top of plunger is fixedly connected with the floating ball. The utility model discloses a floating ball type sulphur sealing device simple structure, through the floating ball drive plunger isolation process gas into liquid sulphur storage facility, and ensure that the liquid sulphur generated flows into the storage facility, eliminates the hidden danger of safety while saving the investment, and is more favorable to the maintenance of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfur recovery equipment, specifically a float-type sulfur sealing device. Background Technology

[0002] In sulfur recovery units in the petrochemical and coal chemical industries both domestically and internationally, the commonly used process involves condensing and cooling the gaseous sulfur produced in the sulfur production section. At the tail end of the condenser, the gaseous sulfur is converted into liquid sulfur and separated from the process gas. The process gas enters the subsequent process from the upper part of the condenser, while the liquid sulfur enters the sulfur sealing tank from the lower part. The purpose of the sulfur sealing tank is to prevent the process gas from entering the sulfur storage facilities. The pressure of the process gas in the system must be less than the static pressure difference of the sulfur sealing tank to achieve the separation of process gas and liquid sulfur, thus preventing the process gas from entering the sulfur storage facilities and ensuring the normal operation of the unit.

[0003] During operation, the condenser cooler typically experiences a pressure of ≥50 kPa. Traditional sulfur sealing equipment mostly utilizes the pressure created by liquid sulfur at a certain height to counteract the internal pressure and prevent process gases from entering the sulfur storage facility. Therefore, the liquid sulfur sealing height must be ≥2.8 m, and the sulfur sealing tank (such as...) Figure 3 (As shown) The equipment height is generally ≥4.0m. Liquid sulfur needs to flow by gravity from the condenser into the sulfur sealing tank. When the sulfur sealing tank is installed on the ground, a reinforced concrete tank pool is required to house it for easy maintenance. Harmful gases can easily accumulate in the tank pool, posing a safety hazard and hindering the safe and stable production of the unit. Necessary safety measures must be taken during equipment maintenance, and the investment is increased. When the sulfur sealing tank is installed on a frame structure, the entire frame needs to be raised by at least 1.5m, significantly increasing the investment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a float-type sulfur sealing device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A float-type sulfur sealing device includes an inner cylinder. A top flange cover is provided at the top of the inner cylinder, and a bottom flange cover is provided at the bottom of the inner cylinder. The inner cylinder is connected to a liquid sulfur inlet pipe and a liquid sulfur outlet pipe. The liquid sulfur outlet pipe extends into the interior of the inner cylinder. One end of the liquid sulfur outlet pipe extending into the interior of the inner cylinder has an opening at its upper part, and a connecting port is fixedly connected to the opening. The connecting port communicates with the liquid sulfur outlet pipe. A plunger is slidably connected inside the connecting port, and the plunger can seal the connecting port. A float is fixedly connected to the top of the plunger.

[0007] In the above structure, a float with a plunger is installed inside the inner cylinder. The float with the plunger moves up and down with the liquid sulfur level, ensuring that only when the liquid sulfur level reaches a certain height and the buoyancy is greater than the weight of the plunger and the float, the float drives the plunger to move upward, releasing the blockage of the connection port and allowing the liquid sulfur to flow out. When the liquid level is low and the buoyancy of the liquid sulfur is less than the weight of the plunger and the float, the plunger moves downward with the float, blocking the top of the connection port, that is, sealing the inner pipe of the liquid sulfur outlet, ensuring that the process gas cannot flow out, and achieving the purpose of sulfur sealing.

[0008] A float limiting cage is fixedly installed inside the inner cylinder, and the float limiting cage is located on the outside of the float. The float limiting cage can restrict the radial movement of the float, so that the float can only move up and down along the central axis of the inner cylinder, thereby facilitating the float to return to the communication port under the action of gravity.

[0009] One method of installing the float limit cage is as follows: the float limit cage is fixedly installed at the lower part of the flange cover at the top of the cylinder.

[0010] Another installation method is as follows: the float limiting cage is fixedly connected to the limiting cage support on the inner wall of the inner cylinder, and the limiting cage support is fixedly set on the inner wall of the inner cylinder.

[0011] An opening device is connected to the top of the top flange cover of the cylinder, which facilitates the opening of the top flange cover of the cylinder.

[0012] The opening device includes a lifting ring fixedly installed on the top of the flange cover of the cylinder, a hook fixedly installed on the lifting ring, and a rotating arm fixedly connected to the hook. An outer cylinder is provided outside the inner cylinder, and a steel pipe is fixedly installed on the outer side of the outer cylinder. The other end of the rotating arm is rotatably installed inside the steel pipe.

[0013] In the above structure, rotating the boom causes the hook, lifting ring, and top flange cover of the cylinder to move, thereby removing the top flange cover of the cylinder from the top of the cylinder to allow operation inside the cylinder.

[0014] The liquid sulfur inlet inner pipe is provided with a liquid sulfur inlet jacket pipe on the outside, and the liquid sulfur outlet inner pipe is provided with a liquid sulfur outlet jacket pipe on the outside. Both the liquid sulfur inlet jacket pipe and the liquid sulfur outlet jacket pipe are connected to the outer cylinder body sleeved outside the inner cylinder body. The liquid sulfur inlet jacket pipe is connected to the steam inlet pipe, and the outer cylinder body is connected to the condensate outlet pipe.

[0015] The inner and outer cylinders adopt a jacket structure to keep the liquid sulfur warm and prevent the liquid sulfur temperature from dropping, keeping the liquid sulfur in a liquid state at all times, ensuring the normal operation of the liquid sulfur, and preventing sulfur seal blockage caused by the solidification of liquid sulfur.

[0016] The inner and outer cylinders are equipped with top jacketed flanges, which are located below the top flange cover. The inner and outer cylinders are also equipped with bottom jacketed flanges, which are located above the bottom flange cover. For ease of installation and pipeline connection, the liquid sulfur inlet inner pipe and liquid sulfur inlet jacketed pipe are connected to the liquid sulfur inlet jacketed flange; the liquid sulfur outlet inner pipe and liquid sulfur outlet jacketed pipe are connected to the liquid sulfur outlet jacketed flange; the steam inlet pipe is connected to the steam inlet flange; and the condensate outlet pipe is connected to the condensate outlet flange.

[0017] The plunger is configured as a frustum structure that is wider at the top and narrower at the bottom, and the connecting port is also configured as a structure that is wider at the top and narrower at the bottom.

[0018] The height of the float-type sulfur sealing device is 0.6 to 1.2 m.

[0019] The beneficial effects achieved by this utility model are:

[0020] The float-type sulfur sealing device of this utility model has a simple structure. It uses a float to drive a plunger to prevent process gas from entering the liquid sulfur storage facility and ensures that the generated liquid sulfur flows into the storage facility. This eliminates safety hazards, saves investment, and facilitates equipment maintenance.

[0021] The float-type sulfur sealing device of this utility model has a compact structure with a total height controlled at around 0.8m, and the longest including the external pipe nozzle does not exceed 1.2m. It is lightweight, occupies a very small area, and is very convenient to use and maintain. The float-type sulfur sealing device can be directly installed on the ground or on a frame, eliminating the need for sulfur sealing tanks and reducing the height of related equipment foundations. If a frame layout is adopted, the overall height of the frame can be reduced due to the compact size of the float-type sulfur sealing device, thereby reducing the construction cost of the device.

[0022] The float-type sulfur sealing device of this utility model adopts a jacket structure to keep liquid sulfur warm and prevent the liquid sulfur temperature from dropping, so that the liquid sulfur always remains in a liquid state, ensuring the normal operation of the liquid sulfur and preventing sulfur seal blockage caused by liquid sulfur solidification.

[0023] The float-type sulfur sealing device of this utility model is easy to unclog and simple to maintain. The top and bottom are bolted flange covers, which are open from top to bottom. It can be used for regular inspection, or in case of blockage, the top flange cover of the cylinder can be opened for unblocking (under the premise of ensuring safety). Unblocking can be completed in a very short time, keeping the liquid sulfur flowing smoothly and not affecting the normal operation of the device.

[0024] The float-type sulfur sealing device of this utility model is compact, has low overall manufacturing cost, and is flexible in layout. Multiple units can be manufactured and installed, connected to the bypass, to achieve direct and rapid switching and unblocking without shutting down the furnace, thus ensuring the normal operation of the device.

[0025] This utility model of a float-type sulfur sealing device achieves the same process effect while saving investment. The equipment is very convenient to maintain and operate, and meets the requirements of long-cycle production. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0029] Figure 3 It is a sulfur-sealed tank structure in existing technology.

[0030] In the diagram: 1. Inner cylinder; 2. Outer cylinder; 3. Bottom jacketed flange of cylinder; 4. Bottom flange cover of cylinder; 5. Top jacketed flange of cylinder; 6. Top flange cover of cylinder; 7. Liquid sulfur inlet inner pipe; 8. Liquid sulfur inlet jacketed pipe; 9. Liquid sulfur inlet jacketed flange; 10. Liquid sulfur outlet inner pipe; 11. Liquid sulfur outlet jacketed pipe; 12. Liquid sulfur outlet jacketed flange; 13. Connecting port; 14. Plunger; 15. Float; 16. Float limiting cage; 17. Steam inlet pipe; 18. Steam inlet flange; 19. Condensate outlet pipe; 20. Condensate outlet flange; 21. Swing arm; 22. Steel pipe; 23. Lifting ring; 24. Limiting cage support lug. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example 1:

[0033] like Figure 1 As shown, a float-type sulfur sealing device includes an inner cylinder 1, a top flange cover 6 at the top of the inner cylinder 1, a bottom flange cover 4 at the bottom of the inner cylinder 1, and the inner cylinder 1 is connected to a liquid sulfur inlet pipe 7 and a liquid sulfur outlet pipe 10 respectively.

[0034] The liquid sulfur outlet inner pipe 10 extends into the interior of the inner cylinder 1. One end of the liquid sulfur outlet inner pipe 10 extends into the inner cylinder 1 and has an upper opening. A connecting port 13 is fixedly connected to the opening, communicating with the liquid sulfur outlet inner pipe 10. A plunger 14 is slidably connected inside the connecting port 13, capable of sealing the connecting port 13. A float 15 is fixedly connected to the top of the plunger 14. The plunger 14 is configured as a frustum-shaped structure, wider at the top and narrower at the bottom, and the connecting port 13 is also configured as a structure wider at the top and narrower at the bottom.

[0035] In the above structure, a float 15 with a plunger 14 is installed inside the inner cylinder 1. The float 15 with the plunger 14 moves up and down with the liquid sulfur level, ensuring that only when the liquid sulfur level reaches a certain height and the buoyancy is greater than the weight of the plunger 14 and the float 15, the float 15 drives the plunger 14 to move upward, releasing the blockage of the connecting port 13 and allowing the liquid sulfur to flow out. When the liquid level is low and the buoyancy of the liquid sulfur is less than the weight of the plunger 14 and the float 15, the plunger 14 moves downward with the float 15, blocking the top of the connecting port 13, that is, sealing the inner pipe 10 of the liquid sulfur outlet, ensuring that the process gas cannot flow out, and achieving the purpose of sulfur sealing.

[0036] A float limiting cage 16 is fixedly installed inside the inner cylinder 1, and the float limiting cage 16 is located on the outside of the float 15. The float limiting cage 16 is a cage-type structure that surrounds the outside of the float 15. The float limiting cage 16 can restrict the radial movement of the float 15, so that the float 15 can only move up and down along the central axis of the inner cylinder 1, thereby facilitating the float 15 to return to the connecting port 13 under the action of gravity.

[0037] The float limiting cage 16 is fixedly installed at the lower part of the top flange cover 6 of the cylinder.

[0038] An outer cylinder 2 is provided outside the inner cylinder 1. A liquid sulfur inlet jacket pipe 8 is provided outside the liquid sulfur inlet inner pipe 7. A liquid sulfur outlet jacket pipe 11 is provided outside the liquid sulfur outlet inner pipe 10. Both the liquid sulfur inlet jacket pipe 8 and the liquid sulfur outlet jacket pipe 11 are connected to the outer cylinder 2. The liquid sulfur inlet jacket pipe 8 is connected to the steam inlet pipe 17, and the outer cylinder 2 is connected to the condensate outlet pipe 19.

[0039] The inner cylinder 1 and the outer cylinder 2 adopt a jacket structure to keep the liquid sulfur warm and prevent the liquid sulfur temperature from dropping, so that the liquid sulfur always remains in a liquid state, ensuring the normal operation of the liquid sulfur and preventing sulfur seal blockage caused by the solidification of liquid sulfur.

[0040] The inner cylinder 1 and the outer cylinder 2 are provided with a top sleeve flange 5, which is located below the top flange cover 6. The inner cylinder 1 and the outer cylinder 2 are provided with a bottom sleeve flange 3, which is located above the bottom flange cover 4.

[0041] For ease of installation and pipeline connection, the liquid sulfur inlet inner pipe 7 and liquid sulfur inlet jacket pipe 8 are connected to the liquid sulfur inlet jacket flange 9, the liquid sulfur outlet inner pipe 10 and liquid sulfur outlet jacket pipe 11 are connected to the liquid sulfur outlet jacket flange 12, the steam inlet pipe 17 is connected to the steam inlet flange 18, and the condensate outlet pipe 19 is connected to the condensate outlet flange 20.

[0042] The height of the float-type sulfur sealing device is 0.8m.

[0043] The plunger 14 and the float 15 can be directly fixedly connected, or they can be fixedly connected through a connecting rod.

[0044] Example 2:

[0045] like Figure 2 As shown, this embodiment is basically the same as embodiment one, except that the top of the top flange cover 6 of the cylinder is connected to an opening device, which facilitates the opening of the top flange cover 6 of the cylinder.

[0046] The opening device includes a lifting ring 23 fixedly installed on the top of the flange cover 6 of the cylinder. A hook is fixedly installed on the lifting ring 23, and a rotating arm 21 is fixedly connected to the hook. The rotating arm 21 has an L-shaped structure. A steel pipe 22 is fixedly installed on the outer side of the outer cylinder 2 through a plate. The other end of the rotating arm 21 is rotatably installed inside the steel pipe 22. The rotating arm 21 is provided with a limit ring, which is locked to the upper part of the steel pipe 22.

[0047] After unfastening the connecting bolts of the top flange cover 6 and the top jacket flange 5 of the cylinder, the rotating arm 21 is driven to rotate relative to the steel pipe 22. The rotating arm 21 drives the hook, the lifting ring 23 and the top flange cover 6 of the cylinder to move, thereby enabling the top flange cover 6 of the cylinder to be removed from the top of the inner cylinder 1.

[0048] When an opening device is installed on the top of the flange cover 6 of the cylinder, the float limit cage 16 is installed as follows: the limit cage support 24 is fixedly connected to the inner wall of the inner cylinder 1, and the float limit cage 16 is fixedly connected to the limit cage support 24 on the inner wall of the inner cylinder 1 by bolts.

Claims

1. A float-type sulfur sealing device, characterized in that, The device includes an inner cylinder (1), with a top flange cover (6) on the top of the inner cylinder (1) and a bottom flange cover (4) on the bottom of the inner cylinder (1). The inner cylinder (1) is connected to a liquid sulfur inlet pipe (7) and a liquid sulfur outlet pipe (10). The liquid sulfur outlet pipe (10) extends into the interior of the inner cylinder (1). One end of the liquid sulfur outlet pipe (10) extends into the interior of the inner cylinder (1) and has an upper opening. A connecting port (13) is fixedly connected to the opening. A plunger (14) is slidably connected inside the connecting port (13). The plunger (14) can block the connecting port (13). A float (15) is fixedly connected to the top of the plunger (14).

2. The float-type sulfur sealing device according to claim 1, characterized in that, The inner cylinder (1) is fixedly provided with a float limiting cage (16), which is located on the outside of the float (15).

3. The float-type sulfur sealing device according to claim 2, characterized in that, The float limiting cage (16) is fixedly installed at the lower part of the top flange cover (6) of the cylinder.

4. The float-type sulfur sealing device according to claim 2, characterized in that, The float limiting cage (16) is fixedly connected to the limiting cage support (24) on the inner wall of the inner cylinder (1).

5. The float-type sulfur sealing device according to claim 4, characterized in that, An opening device is connected to the top of the top flange cover (6) of the cylinder.

6. The float-type sulfur sealing device according to claim 5, characterized in that, The opening device includes a lifting ring (23) fixedly installed on the top of the flange cover (6) of the cylinder, a hook connected to the lifting ring (23), a rotating arm (21) fixedly connected to the hook, an outer cylinder (2) is provided outside the inner cylinder (1), a steel pipe (22) is fixedly installed on the outer side of the outer cylinder (2), and the other end of the rotating arm (21) is rotatably installed inside the steel pipe (22).

7. The float-type sulfur sealing device according to claim 1, characterized in that, The liquid sulfur inlet inner pipe (7) is provided with a liquid sulfur inlet jacket pipe (8) and the liquid sulfur outlet inner pipe (10) is provided with a liquid sulfur outlet jacket pipe (11). The liquid sulfur inlet jacket pipe (8) and the liquid sulfur outlet jacket pipe (11) are both connected to the outer cylinder (2) which is sleeved outside the inner cylinder (1). The liquid sulfur inlet jacket pipe (8) is connected to the steam inlet pipe (17) and the outer cylinder (2) is connected to the condensate outlet pipe (19).

8. The float-type sulfur sealing device according to claim 7, characterized in that, The inner cylinder (1) and outer cylinder (2) are provided with a top jacket flange (5), which is located below the top flange cover (6). The inner cylinder (1) and outer cylinder (2) are provided with a bottom jacket flange (3), which is located above the bottom flange cover (4). The liquid sulfur inlet pipe (7) and liquid sulfur inlet jacket pipe (8) are connected to the liquid sulfur inlet jacket flange (9). The liquid sulfur outlet pipe (10) and liquid sulfur outlet jacket pipe (11) are connected to the liquid sulfur outlet jacket flange (12). The steam inlet pipe (17) is connected to the steam inlet flange (18). The condensate outlet pipe (19) is connected to the condensate outlet flange (20).

9. The float-type sulfur sealing device according to claim 1, characterized in that, The plunger (14) is configured as a frustum structure that is wider at the top and narrower at the bottom, and the connecting port (13) is also configured as a structure that is wider at the top and narrower at the bottom.

10. The float-type sulfur sealing device according to claim 1, characterized in that, The height of the float-type sulfur sealing device is 0.6 to 1.2 m.

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