Automatic cleaning device for acidic substances in condensate water of coal gas holder

Abstract

The utility model provides an automatic cleaning device of coal gas tank condensate water acid substance, and the water outlet of coal gas tank is installed with the drain trap, the water outlet of drain trap is connected with the drain pipe, and the drain pipe is installed with the PH meter, the PH meter is electrically connected with the control system of control room, and the control system of control room is still electrically connected with the electromagnetic valve, and the electromagnetic valve is installed on the production water pipe, and the production water pipe is installed with the U type water seal and check valve, the utility model discloses beneficial effects are: the utility model discloses through the linkage of PH meter, electromagnetic valve and control system, realizes the automatic monitoring and adjustment of the coal gas tank condensate water PH value, can effectively dilute and stabilize acidic condensate water in weak acid range, thereby significantly reducing the corrosion to the bottom steel plate of tank, the double sealing structure of pipeline effectively prevents the coal gas leakage, and is safe and reliable, simultaneously, adopts the ingenious design of the handle type hose, makes the device have the obvious advantages of convenient maintenance and low transformation cost under the prerequisite of not needing large -scale reconstruction.

Description

Technical Field

[0001] This utility model relates to an automatic cleaning device, specifically an automatic cleaning device for acidic substances in the condensate of a gas holder. Background Technology

[0002] A gas holder is a large storage device used to balance the pressure of the gas pipeline network and ensure a stable gas supply. During operation, condensate will be produced as the temperature of the gas inside the holder decreases. This condensate is usually automatically discharged through multiple horizontal drains located at the bottom of the holder.

[0003] In recent years, dry baghouse dust collection technology has been widely adopted in blast furnace gas dust removal processes. While this technology improves dust removal efficiency, it also leads to an increase in the concentration of acidic substances such as chloride ions in the gas. When gas containing extremely high concentrations of chloride ions enters the gas holder, the condensate it produces is highly acidic, often with a pH value below 3.5. This acidic condensate continuously accumulates at the bottom of the gas holder, causing severe corrosion to the steel base plate, which not only shortens the equipment's service life but also poses potential safety hazards.

[0004] Currently, conventional methods for handling such problems mostly rely on regular manual inspections and flushing, which suffer from issues such as delayed response, low efficiency, high labor costs, and the inability to achieve real-time and precise control. Therefore, there is an urgent need in this field for a device that can automatically and in real-time monitor and adjust the pH of condensate to effectively protect the structure of the gas holder. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and defects of existing technologies by providing an automatic cleaning device for acidic substances in the condensate of gas holders. This invention achieves automatic monitoring and adjustment of the pH value of the condensate through the linkage of a pH meter, solenoid valve, and control system. It effectively dilutes and stabilizes the acidic condensate within a weakly acidic range, thereby significantly reducing corrosion of the bottom steel plate of the gas holder. The double-sealed structure in its pipeline effectively prevents gas leakage, ensuring safety and reliability. Furthermore, the ingenious design, including a lever-type flexible hose, allows the device to offer significant advantages in terms of convenient maintenance and low modification costs without requiring large-scale modifications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic cleaning device for acidic substances in the condensate of a gas holder, comprising a gas holder, a control room, a production water pipe, and a gas holder inlet and outlet pipe. A steam trap is installed at the outlet of the gas holder, and a drain pipe is connected to the outlet of the steam trap. A pH meter is installed inside the drain pipe. The pH meter is electrically connected to the control system of the control room, and the control system of the control room is also electrically connected to a solenoid valve. The solenoid valve is installed on the production water pipe, and a U-shaped water seal and a check valve are installed on the production water pipe. The outlet of the production water pipe is connected to the gas holder inlet and outlet pipe, and one end of the gas holder inlet and outlet pipe is connected to the gas holder.

[0007] Furthermore, the bottom of the gas holder is provided with a bottom annular groove for collecting condensate.

[0008] Furthermore, a manual valve is installed on the end of the production water pipe near the gas holder inlet / outlet pipe, and the manual valve is a DN50 manual valve.

[0009] Furthermore, a manhole is installed on the gas holder inlet and outlet pipes, and the production water pipe is connected to the gas holder inlet and outlet pipes through the manhole, which is a DN600 manhole.

[0010] Furthermore, the production water pipe is a lever-type metal flexible hose, and the inlet end of the production water pipe is a quick connector.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are as follows: This utility model realizes automatic monitoring and adjustment of the pH value of the condensate in the gas holder through the linkage of pH meter, solenoid valve and control system, which can effectively dilute acidic condensate and stabilize it in the weakly acidic range, thereby significantly reducing the corrosion of the bottom steel plate of the holder; the double sealing structure set in its pipeline effectively prevents gas leakage, which is safe and reliable; at the same time, the clever design of lever-type hose and other features makes the device have the significant advantages of convenient maintenance and low modification cost without large-scale modification. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Explanation of reference numerals in the attached diagram: 1. Gas holder; 2. Steam trap; 3. pH meter; 4. Drain pipe; 5. Control room; 6. Production water pipe; 7. Solenoid valve; 8. Gas holder inlet / outlet pipe; 9. Manual valve; 10. Manhole; 11. Check valve; 12. U-shaped water seal; 13. Bottom annular groove. Detailed Implementation

[0015] See Figure 1 As shown, the technical solution adopted in this specific embodiment is as follows: It includes a gas holder 1, a control room 5, a production water pipe 6, and a gas holder inlet / outlet pipe 8. A steam trap 2 is installed at the outlet of the gas holder 1. A drain pipe 4 is connected to the outlet of the steam trap 2, and a pH meter 3 is installed inside the drain pipe 4. The pH meter 3 is electrically connected to the control system of the control room 5, and the control system of the control room 5 is also electrically connected to a solenoid valve 7. The solenoid valve 7 is installed on the production water pipe 6. A U-shaped water seal 12 and a check valve 11 are installed on the production water pipe 6, and the outlet of the production water pipe 6 is connected to the gas holder inlet / outlet pipe 8. One end of the gas holder inlet / outlet pipe 8 is connected to the gas holder 1.

[0016] More specifically, the bottom of the gas holder 1 is provided with a bottom annular groove 13 for collecting condensate.

[0017] More specifically, a manual valve 9 is installed on the end of the production water pipe 6 near the gas holder inlet / outlet pipe 8, and the manual valve 9 is a DN50 manual valve.

[0018] More specifically, a manhole 10 is installed on the gas holder inlet / outlet pipe 8, and the production water pipe 6 is connected to the gas holder inlet / outlet pipe 8 through the manhole 10. The manhole 10 is a DN600 manhole.

[0019] More specifically, the production water pipe 6 is a lever-type metal flexible hose, and the inlet end of the production water pipe 6 is a quick connector. It is used to switch between the production water pipe 6 and the nitrogen purging pipe. During normal operation, production water can be connected, while when maintenance is required, nitrogen can be connected, without the need to open a separate water inlet on the gas holder inlet / outlet pipe 8.

[0020] The working principle of this utility model is as follows: During the operation of the gas holder 1, acidic condensate is collected in the bottom annular groove 13 and automatically discharged to the drain pipe 4 via the steam trap 2. A pH meter 3 installed at the overflow port of the steam trap 2 monitors the pH value of the flowing condensate in real time and transmits the signal to the control system in the control room 5. When the control system receives the pH value detected by the pH meter 3, it compares it with a preset value. When the pH value is ≤3.5, the control system issues a command to open the solenoid valve 7. After the solenoid valve 7 opens, the water in the neutral production water pipe 6 flows sequentially through the solenoid valve 7 and the U-shaped water pipe. The water flows through the manhole 10 on the gas holder inlet / outlet pipe 8, and is flushed and diluted by the U-shaped water seal 12, check valve 11, and manual valve 9. The water then enters the gas holder 1 through the manhole 10 on the gas holder inlet / outlet pipe 8, flushing and diluting the highly acidic condensate in the bottom annular groove 13. The diluted mixture is then discharged again by the steam trap 2, thus forming a complete automatic regulation cycle. When the pH value is ≥5.5, the control system issues a command to close the solenoid valve 7. During this process, the U-shaped water seal 12 and check valve 11 together form a double safety barrier, effectively preventing gas backflow. The production water pipe 6 of the lever-type metal hose provides convenience for connecting nitrogen for pipeline purging.

[0021] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An automatic cleaning device for acidic substances in the condensate of a gas holder, characterized in that: It includes a gas holder (1), a control room (5), a production water pipe (6), and a gas holder inlet / outlet pipe (8). A steam trap (2) is installed at the outlet of the gas holder (1). A drain pipe (4) is connected to the outlet of the steam trap (2). A pH meter (3) is installed in the drain pipe (4). The pH meter (3) is electrically connected to the control system of the control room (5). The control system of the control room (5) is also electrically connected to a solenoid valve (7). The solenoid valve (7) is installed on the production water pipe (6). A U-shaped water seal (12) and a check valve (11) are installed on the production water pipe (6). The outlet of the production water pipe (6) is connected to the gas holder inlet / outlet pipe (8). One end of the gas holder inlet / outlet pipe (8) is connected to the gas holder (1).

2. The automatic cleaning device for acidic substances in gas holder condensate according to claim 1, characterized in that: The bottom of the gas holder (1) is provided with a bottom annular groove (13) for collecting condensate.

3. The automatic cleaning device for acidic substances in gas holder condensate according to claim 1, characterized in that: A manual valve (9) is installed on the end of the production water pipe (6) near the gas holder inlet / outlet pipe (8), and the manual valve (9) is a DN50 manual valve.

4. The automatic cleaning device for acidic substances in gas holder condensate according to claim 1, characterized in that: A manhole (10) is installed on the gas holder inlet / outlet pipe (8). The production water pipe (6) is connected to the gas holder inlet / outlet pipe (8) through the manhole (10), and the manhole (10) is a DN600 manhole.

5. The automatic cleaning device for acidic substances in gas holder condensate according to claim 1, characterized in that: The production water pipe (6) is a lever-type metal hose, and the inlet end of the production water pipe (6) is a quick connector.

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