Device for automatically draining steam condensate water of liquid sulfur tank

Abstract

A device for automatically draining steam condensate of a liquid sulfur tank comprises a condensate collecting tank and a flash tank, an inlet of the flash tank is connected with the downstream end of a steam coil of the liquid sulfur tank through a first pipeline, a gas phase outlet of the flash tank supplies low-pressure steam to the outside, and a liquid phase outlet of the flash tank supplies materials to the condensate collecting tank through a second pipeline. A liquid level meter is arranged on the condensate water collecting tank, the bottom of the condensate water collecting tank is connected with a third pipeline, condensate water is discharged, a pneumatic valve is arranged on the third pipeline, and the liquid level meter is connected with the pneumatic valve through a central control room. The automatic drainage device is simple in structure, can realize automatic drainage, and ensures the heating efficiency of the steam coil of the liquid sulfur tank.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to a device for automatically draining steam condensed water from a liquid sulfur tank. Background Art

[0002] Dimethyl sulfoxide (DMSO) has a wide range of uses. Chemical companies use sulfur as a raw material in its production. Natural gas and sulfur are combined to synthesize hydrogen sulfide and carbon disulfide. Hydrogen sulfide, carbon disulfide, and methanol are then used as raw materials to synthesize dimethyl sulfide. Finally, dimethyl sulfide is used as a raw material to produce DMSO through oxidation.

[0003] Currently, the accompanying liquid sulfur tank uses a steam coil as a heating source to maintain the sulfur raw material in a liquid state. Based on experience, on-site steam condensate drainage can lead to a drop in liquid sulfur temperature due to untimely drainage. This can cause condensation and blockage of the pipeline, which can cause the unit to shut down in severe cases.

[0004] Therefore, how to maintain the temperature of the liquid sulfur tank and facilitate operation is a problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The purpose of the utility model is to provide a device for automatic drainage of steam condensate in a liquid sulfur tank in response to the deficiencies of the existing technology. The device has a simple structure and can achieve automatic drainage, thereby ensuring the heating efficiency of the steam coil of the liquid sulfur tank.

[0006] The technical solution of the utility model is: a device for automatically draining steam condensate from a liquid sulfur tank, comprising a condensate collecting tank and a flash tank, wherein the inlet of the flash tank is connected to the downstream end of the liquid sulfur tank steam coil through a first pipeline, the gas phase outlet of the flash tank provides low-pressure steam to the outside, and the liquid phase outlet of the flash tank supplies the condensate collecting tank through a second pipeline, the condensate collecting tank is provided with a liquid level gauge, the bottom of the condensate collecting tank is connected to a third pipeline for discharging condensate, a pneumatic valve is provided on the third pipeline, and the liquid level gauge is connected to the pneumatic valve through a central control room.

[0007] A connecting pipe is provided on the top of the condensed water collecting tank, and an extending end of the connecting pipe extends vertically upward and presents an inverted U-shaped structure.

[0008] A plurality of heat exchange fins are arranged at intervals along the length direction on the communicating pipe.

[0009] The system further includes a fourth pipeline, which is connected in parallel with the first pipeline and has a drain valve disposed on the fourth pipeline.

[0010] The upstream end of the liquid sulfur tank steam coil is located above the downstream end of the liquid sulfur tank steam coil.

[0011] The second pipeline is provided with a regulating valve.

[0012] The above technical solution has the following beneficial effects:

[0013] 1. A device for automatically draining steam condensate from a liquid sulfur tank includes a condensate collection tank and a flash tank. The condensate collection tank is used to collect condensate formed by heat release and cooling in the steam coils within the liquid sulfur tank. The flash tank is used to collect the residual heat of the condensate and cooperates with the condensate collection tank to ensure the structural safety of the condensate collection tank. The inlet of the flash tank is connected to the downstream end of the liquid sulfur tank steam coils via a first pipeline. The gas phase outlet of the flash tank provides low-pressure steam to the outside, and the liquid phase outlet of the flash tank supplies the condensate collection tank via a second pipeline. That is, the condensate discharged from the liquid sulfur tank steam coils first enters the flash tank. After flash evaporation and steady flow, the residual heat of the condensate is discharged from the flash tank in the form of low-pressure steam for use by the enterprise, thereby improving the utilization rate of the steam introduced into the liquid sulfur tank steam coils. The condensate, which has been utilized through the residual heat, is delivered to the condensate collection tank via the liquid phase outlet and the second pipeline. The condensate collecting tank is provided with a liquid level gauge, and the bottom of the condensate collecting tank is connected to the third pipeline to discharge the condensate. A pneumatic valve is provided on the third pipeline, and the liquid level gauge is connected to the pneumatic valve through the central control room. The condensate after waste heat utilization is sent to the condensate collecting tank by the second pipeline, and the opening and closing of the pneumatic valve on the third pipeline is controlled by the liquid level gauge to keep the liquid level in the condensate collecting tank within the specified range. This can avoid the risk of the steam coil cooling due to untimely drainage, and realize automatic control, effectively reduce manual labor intensity and ensure manual safety.

[0014] 2. A connecting pipe is provided on the top of the condensate collection tank. The extended end of the connecting pipe extends vertically upward and is in an inverted U-shaped structure. A number of heat exchange fins are arranged at intervals along the length direction of the connecting pipe. The connecting pipe is connected to the atmosphere to ensure smooth drainage of the condensate collection tank. In the process of discharging the steam generated by the condensed water in the condensate collection tank through the connecting pipe, it is efficiently cooled by the heat exchange fins, converted into liquid and refluxed into the condensate collection tank to avoid on-site pollution.

[0015] 3. It also includes a fourth pipeline, which is connected in parallel with the first pipeline, and a drain valve is provided on the fourth pipeline. A regulating valve is provided on the second pipeline. The drain valve can avoid residual condensate in the steam coil and can also serve the purpose of emergency exhaust to ensure structural safety. The second regulating valve is used to adjust the flow rate of condensate in the second pipeline to meet the actual needs of the enterprise.

[0016] The following is a further description with reference to the accompanying drawings and specific implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a connection diagram of the utility model.

[0018] In the accompanying drawings, 1 is a condensate collection tank, 2 is a flash tank, 3 is a liquid level gauge, 4 is a pneumatic valve, 5 is a connecting pipe, 6 is a heat exchange thorn plate, 7 is a steam trap, 8 is a regulating valve, 11 is a first pipeline, 12 is a second pipeline, 13 is a third pipeline, and 14 is a fourth pipeline. DETAILED DESCRIPTION

[0019] See also Figure 1 This is a specific embodiment of a device for automatically draining steam condensate from a liquid sulfur tank. The device includes a condensate collection tank 1 and a flash tank 2. The inlet of the flash tank 2 is connected to the downstream end of the liquid sulfur tank steam coil via a first pipeline 11. In this embodiment, the upstream end of the liquid sulfur tank steam coil is located above the downstream end of the liquid sulfur tank steam coil. That is, the upstream end of the steam coil is connected to the steam source, and the downstream end spirals downward. Typically, a fourth pipeline 14 is also included. The upstream end of the fourth pipeline 14 is connected in parallel with the first pipeline 11, and a steam trap 7 is installed on the fourth pipeline. The downstream end of the fourth pipeline discharges residual condensate to the outside. This not only prevents condensate from remaining in the steam coil but also serves as an emergency vent. The gas phase outlet of the flash tank 2 provides low-pressure steam to the outside, while the liquid phase outlet of the flash tank 2 supplies the condensate collection tank 1 via a second pipeline 12. In this embodiment, a regulating valve 8 is installed on the second pipeline 12 to control the flow of condensate in the second pipeline. The condensate collecting tank 1 is provided with a liquid level gauge 3, the bottom of the condensate collecting tank 1 is connected to the third pipeline 13 for discharging the condensate, a pneumatic valve 4 is provided on the third pipeline 13, and the liquid level gauge 3 is connected to the pneumatic valve 4 through the central control room. In this embodiment, in order to ensure that the condensate in the condensate collecting tank is discharged smoothly, a connecting pipe 5 is provided on the top of the condensate collecting tank 1. The extending end of the connecting pipe 5 extends vertically upward and has an inverted U-shaped structure, which can effectively reduce the risk of foreign matter entering the condensate collecting tank. Furthermore, a number of heat exchange fins 6 are arranged at intervals along the length direction on the connecting pipe 5.

[0020] The working principle of the utility model is as follows: steam enters the upstream end of the steam coil in the liquid sulfur tank and is transferred to the downstream end of the steam coil. During the transfer process, the steam releases heat and condenses into liquid, and is sent to the flash tank through the first pipeline. After flash evaporation, the waste heat therein is provided to the outside in the form of steam through the gas phase outlet of the flash tank to provide low-pressure steam. The condensed water after the waste heat is utilized is sent to the condensed water collection tank through the second pipeline, and its liquid level is detected by the liquid level gauge. If its liquid level is within the set range, the liquid level gauge sends a signal to the central control room to control the pneumatic valve to open and discharge the condensed water to ensure the normal operation of the steam coil.

Claims

1. A device for automatically draining steam condensate from a liquid sulfur tank, characterized by: It includes a condensate collection tank (1) and a flash tank (2). The inlet of the flash tank (2) is connected to the downstream end of the liquid sulfur tank steam coil through the first pipeline (11), the gas phase outlet of the flash tank (2) provides low-pressure steam to the outside, and the liquid phase outlet of the flash tank (2) supplies the condensate collection tank (1) through the second pipeline (12). The condensed water collecting tank (1) is provided with a liquid level gauge (3), the bottom of the condensed water collecting tank (1) is connected to a third pipeline (13) for discharging condensed water, a pneumatic valve (4) is provided on the third pipeline (13), and the liquid level gauge (3) is connected to the pneumatic valve (4) through a central control room.

2. The device for automatic drainage of steam condensate from a liquid sulfur tank according to claim 1, characterized in that: A connecting pipe (5) is provided on the top of the condensed water collecting tank (1), and the extending end of the connecting pipe (5) extends vertically upward and is in an inverted U-shaped structure.

3. The device for automatic drainage of steam condensate from a liquid sulfur tank according to claim 2, characterized in that: A plurality of heat exchange fins (6) are arranged at intervals along the length direction on the connecting pipe (5).

4. The device for automatic drainage of steam condensate from a liquid sulfur tank according to claim 1, characterized in that: The invention also comprises a fourth pipeline (14), which is connected in parallel with the first pipeline, and a drain valve (7) is provided on the fourth pipeline (14).

5. The device for automatic drainage of steam condensate from a liquid sulfur tank according to claim 1, characterized in that: The upstream end of the liquid sulfur tank steam coil is located above the downstream end of the liquid sulfur tank steam coil.

6. The device for automatic drainage of steam condensate from a liquid sulfur tank according to claim 1, characterized in that: A regulating valve (8) is provided on the second pipeline (12).

Images