Flushing system for sodium hydrosulfide solution storage tank

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a sodium hydrogen sulfide solution storage tank flushing system which comprises a magnetic turning plate liquid level meter, a remote transmission liquid level meter, a sodium hydrogen sulfide storage tank, a condensation water pipeline, an upper flushing line, a lower flushing line and a remote transmission flushing line. A lower end inlet of the magnetic flap liquid level meter is connected with a lower end drain valve; a first short-circuit wire is led out from the sodium hydrosulfide storage tank to be connected to an outlet in the upper end of the magnetic flap liquid level meter, a second short-circuit wire is led out from the sodium hydrosulfide storage tank to be connected to an outlet in the lower end of the magnetic flap liquid level meter, a third short-circuit wire is led out from the sodium hydrosulfide storage tank to be connected to the remote transmission liquid level meter, and a remote transmission shower valve is arranged on the third short-circuit wire. On-line flushing of the sodium hydrogen sulfide solution storage tank is achieved, when liquid level display is different from remote liquid level, water flushing is carried out, checking is carried out again after flushing, and the operation risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to a sodium hydrosulfide solution storage tank flushing system. Background Technology

[0002] The high-concentration hydrogen sulfide gas produced by the pre-hydrogenation process is used to absorb the hydrogen sulfide with alkaline solution to produce sodium hydrosulfide solution as a byproduct. Due to the nature of the process, the gas contains a small amount of CO2, which inevitably produces a small amount of sodium carbonate and other precipitates. These precipitates are insoluble and can easily clog the level gauge, causing inaccurate readings and making it impossible to monitor the tank level. Cleaning the level gauge can also lead to splashing and hydrogen sulfide poisoning. Utility Model Content

[0003] In view of the deficiencies of the prior art, this utility model provides a sodium hydrosulfide solution storage tank flushing system, which realizes online flushing of sodium hydrosulfide solution storage tanks. When there is a difference between the liquid level display and the remote liquid level, water flushing is performed, and the liquid level is checked again after flushing, thereby reducing operational risks.

[0004] To achieve the above objectives, the present invention provides a sodium hydrosulfide solution storage tank flushing system, comprising a magnetic float level gauge, a remote level gauge, a sodium hydrosulfide storage tank, a condensate pipeline, an upper flushing line, a lower flushing line, and a remote flushing line. The upper inlet of the magnetic float level gauge is connected to an upper drain valve, and the lower inlet of the magnetic float level gauge is connected to a lower drain valve. A first shorting wire from the sodium hydrosulfide storage tank is connected to the upper outlet of the magnetic float level gauge, and a second shorting wire is connected to... A third shorting wire is led out from the lower outlet of the magnetic float level gauge and connected to the remote level gauge. A remote drain valve is installed on the third shorting wire. A pre-hydrogenated water injection pump is installed on the condensate pipeline. One end of the upper flushing line is connected to the condensate pipeline, and the other end is connected to the upper drain valve. One end of the lower flushing line is connected to the condensate pipeline, and the other end is connected to the lower drain valve. One end of the remote flushing line is connected to the remote drain valve, and the other end is connected to the lower flushing line.

[0005] Furthermore, a pump outlet valve is provided downstream of the pre-hydrogenated water injection pump.

[0006] Furthermore, an upper outlet valve is provided on the first shorting wire.

[0007] Furthermore, a lower outlet valve is provided on the second shorting wire.

[0008] Furthermore, a remote transmission lead-out valve is provided on the third shorting wire.

[0009] Furthermore, a condensate drain valve is installed on the upper flushing line.

[0010] Furthermore, a condensate drain valve is installed on the lower flushing line.

[0011] The beneficial effects of this utility model are: it completely solves the problem of sediment crystals clogging the level gauge in sodium hydrosulfide solution storage tanks. Since the crystals cannot be dissolved, the sediment easily clogs the level gauge, leading to inaccurate level gauge readings. By comparing the remote level gauge with the magnetic level gauge, the magnetic level gauge can be flushed online, avoiding direct contact between people and the medium and reducing the risk of splashing and hydrogen sulfide poisoning. Attached Figure Description

[0012] Figure 1 This is a process flow diagram of the present invention;

[0013] In the diagram: 100, magnetic level gauge; 110, upper drain valve; 120, lower drain valve.

[0014] 200. Remote level gauge

[0015] 300. Sodium hydrosulfide storage tank; 310. First shorting wire; 311. Upper outlet valve; 320. Second shorting wire; 321. Lower outlet valve; 330. Third shorting wire; 331. Remote outlet valve; 332. Remote shower valve.

[0016] 400. Condensate pipeline; 410. Pre-hydrogenated water injection pump; 420. Pump outlet valve.

[0017] 500. Upper flushing line; 510. Drainage valve.

[0018] 600. Lower flushing line; 610. Drainage valve.

[0019] 700. Remote washing line. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] like Figure 1As shown, an embodiment of the sodium hydrosulfide solution storage tank flushing system of this utility model includes a magnetic float level gauge 100, a remote level gauge 200, a sodium hydrosulfide storage tank 300, a condensate pipeline 400, an upper flushing line 500, a lower flushing line 600, and a remote flushing line 700. The upper inlet of the magnetic float level gauge 100 is connected to an upper drain valve 110, and the lower inlet of the magnetic float level gauge 100 is connected to a lower drain valve 120. A first shorting wire 310 is led out from the sodium hydrosulfide storage tank 300 and connected to the upper outlet of the magnetic float level gauge 100, and a second shorting wire 320 is led out and connected to... The lower outlet of the magnetic float level gauge 100 is connected to the remote level gauge 200 via a third shorting wire 330. A remote drain valve 332 is installed on the third shorting wire 330. A pre-hydrogenated water injection pump 410 is installed on the condensate pipeline 400. One end of the upper flushing line 500 is connected to the condensate pipeline 400, and the other end is connected to the upper drain valve 110. One end of the lower flushing line 600 is connected to the condensate pipeline 400, and the other end is connected to the lower drain valve 120. One end of the remote flushing line 700 is connected to the remote drain valve 332, and the other end is connected to the lower flushing line 600.

[0022] It should be noted that crystallization in the sodium hydrosulfide storage tank 300 caused simultaneous blockage of the remote level gauge 200 and the magnetic level gauge 100. It is necessary to first flush the remote level gauge 200 to obtain an accurate reading, then flush the magnetic level gauge 100, and finally compare the data with the data from the remote level gauge 200 to check for accuracy. If there is a discrepancy in the level display, flush again, and check again until the data comparison is accurate.

[0023] In one embodiment, a pump outlet valve 420 is provided downstream of the pre-hydrogenated water injection pump 410.

[0024] In one embodiment, an upper lead-out valve 311 is provided on the first shorting wire 310.

[0025] In one embodiment, a lower lead-out valve 321 is provided on the second shorting wire 320.

[0026] In one embodiment, a remote lead-out valve 331 is provided on the third shorting wire 330.

[0027] In one embodiment, a condensate drain valve 510 is provided on the upper flushing line 500.

[0028] In one embodiment, a condensate drain valve 610 is provided on the lower flushing line 600.

[0029] It should be noted that the pre-hydrogenated water is condensate, which has a high temperature and easily dissolves crystals in the sodium hydrosulfide solution.

[0030] In the aforementioned sodium hydrosulfide solution storage tank flushing system, a pipeline is led from the outlet of the pre-hydrogenation water injection pump 410 to the upper outlet valve 311 and lower outlet valve 321 of the level gauge. A remote discharge valve 332 is connected to the pipeline at the remote level gauge short-circuit point. When the level gauge readings of the remote level gauge 200 differ significantly from those of the on-site level gauge, the upper drain valve 110, upper outlet valve 311, lower drain valve 120, and lower outlet valve 321 are closed first. The remote discharge valve 332 and remote outlet valve 331 are then opened to flush the remote level gauge 200. After flushing, the remote discharge valve 332, remote outlet valve 331, upper drain valve 110, and upper outlet valve 311 are closed, and the lower drain valve 120 and lower outlet valve 321 are opened. The lower outlet valve 321 is flushed. After flushing, the lower drain valve 120 and the lower outlet valve 321 are closed. The upper outlet valve 311 and the upper drain valve 110 are opened to flush the upper outlet valve 311. After flushing, the pump outlet valve 420 is closed. The remote level gauge 200 is compared with the levels of the upper outlet valve 311 and the lower outlet valve 321 to check for accuracy. After completion, the remote outlet valve 331, the remote drain valve 332, the upper outlet valve 311, the upper drain valve 110, the lower outlet valve 321, and the lower drain valve 120 are closed. The upper drain valve 510 and the lower drain valve 610 are opened to drain the water in the pipeline and prevent freezing in winter.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A flushing system for a sodium hydrosulfide solution storage tank, characterized in that: include A magnetic level gauge, wherein the upper inlet of the magnetic level gauge is connected to an upper drain valve, and the lower inlet of the magnetic level gauge is connected to a lower drain valve; Remote level gauge; A sodium hydrosulfide storage tank has a first short wire connected to the upper outlet of the magnetic float level gauge, a second short wire connected to the lower outlet of the magnetic float level gauge, and a third short wire connected to the remote level gauge. A remote discharge valve is installed on the third short wire. Condensate pipeline, wherein a pre-hydrogenated water injection pump is installed on the condensate pipeline; The upper flushing line is connected at one end to the condensate pipeline and at the other end to the upper drain valve. The lower flushing line is connected at one end to the condensate pipeline and at the other end to the lower drain valve. The remote flushing line is connected at one end to the remote shower valve and at the other end to the lower flushing line.

2. The sodium hydrosulfide solution storage tank flushing system according to claim 1, characterized in that: A pump outlet valve is installed downstream of the pre-hydrogenated water injection pump.

3. A sodium hydrosulfide solution storage tank flushing system according to claim 1 or 2, characterized in that: An outlet valve is installed on the first shorting wire.

4. The sodium hydrosulfide solution storage tank flushing system according to claim 3, characterized in that: A lower outlet valve is installed on the second shorting wire.

5. A sodium hydrosulfide solution storage tank flushing system according to claim 1 or 4, characterized in that: A remote transmission lead-out valve is installed on the third shorting wire.

6. The sodium hydrosulfide solution storage tank flushing system according to claim 5, characterized in that: The upper flushing line is equipped with a condensate drain valve.

7. A sodium hydrosulfide solution storage tank flushing system according to claim 1 or 6, characterized in that: The lower flushing line is equipped with a condensate drain valve.

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