Quenching tower pH adjusting device of sulfur recovery device

Abstract

The utility model relates to the technical field of pH adjusting devices, in particular to a pH adjusting device for a quench tower of a sulfur recovery device, which comprises a storage tank, an alkali liquor concentration detector, a connecting pipe, a first hose, a first valve, a pneumatic diaphragm pump, a gas delivery pipe, a gas inlet valve, a feeding component and a liquid inlet component, the alkali liquor concentration detector is installed in the storage tank, the connecting pipe is fixedly connected with the storage tank, the first hose is fixedly installed at the end of the connecting pipe, the first valve is fixedly installed on the connecting pipe, and the pneumatic diaphragm pump is fixedly installed at the end of the first hose. According to the device, the pneumatic diaphragm pump pumps out alkali liquor in the storage tank through the connecting pipe and conveys the alkali liquor to the quench tower through the liquid conveying pipe, sodium hydroxide powder and desalted water can be conveniently conveyed into the storage tank through the feeding assembly and the liquid inlet assembly, sufficient supply of the alkali liquor can be ensured, control over the pH of the quench tower is facilitated, and the service life of the quench tower is prolonged. And the dosage is not limited.

Description

Technical Field

[0001] This utility model relates to the technical field of pH adjustment devices, and more specifically, to a pH adjustment device for a quench tower of a sulfur recovery device. Background Technology

[0002] During the daily operation, start-up, and shutdown of sulfur recovery units, a common and challenging problem is the unexpected influx of large amounts of sulfur dioxide into the quench tower. This sudden situation can rapidly cause a sharp drop in the pH value within the tower. This significant decrease in pH not only indicates a sharp increase in the acidity of the solution but also signifies a substantial increase in the corrosiveness to the equipment materials. This intensified corrosiveness not only shortens the service life of the equipment but also poses a serious threat to the stable operation of the unit, leading to a series of chain reactions such as unplanned shutdowns and increased leakage risks, ultimately affecting the safety and efficiency of the entire production process.

[0003] Currently, pH adjustment in quench towers primarily relies on liquid ammonia supplied from cylinders. However, this design has significant drawbacks: the amount of liquid ammonia used is limited by the finite storage capacity of the cylinders. When a significant pH adjustment is required, this design often cannot meet the immediate adjustment needs, limiting operational flexibility and response speed. Furthermore, storing large quantities of liquid ammonia cylinders poses a major safety hazard and increases the risk of accidents. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a pH adjustment device for the quench tower of a sulfur recovery unit. This device aims to solve, to some extent, the existing technology, which often fails to meet immediate adjustment needs, limiting operational flexibility and response speed. Furthermore, the large-scale storage of liquid ammonia cylinders poses a significant safety hazard and increases the risk of accidents.

[0005] This utility model proposes a pH adjustment device for a quench tower of a sulfur recovery unit, comprising a storage tank, an alkali concentration meter, a connecting pipe, a first hose, a first valve, a pneumatic diaphragm pump, a gas delivery pipe, an inlet valve, and a feeding assembly and a liquid delivery assembly installed on the storage tank. The alkali concentration meter is installed inside the storage tank, the connecting pipe is fixedly connected to the storage tank, the first hose is fixedly installed at the end of the connecting pipe, the first valve is fixedly installed on the connecting pipe, the pneumatic diaphragm pump is fixedly installed at the end of the first hose, the gas delivery pipe is fixedly installed at the end of the pneumatic diaphragm pump, and the inlet valve is fixedly installed on the gas delivery pipe.

[0006] Preferably, the infusion end of the pneumatic diaphragm pump is fixedly connected to an infusion tube, the outer wall of the infusion tube is fixedly connected to a second valve, and the end of the infusion tube is fixedly connected to a second flexible tube.

[0007] Preferably, the liquid inlet assembly includes a one-way valve, a flow meter, and a transfer pump, which are installed sequentially on the liquid inlet pipe of the storage tank from far to near.

[0008] Preferably, the feeding assembly includes a feeding pipe, a crushing box, and a feeding pipe. The feeding pipe is fixedly installed on the top of the storage tank, the crushing box is fixedly installed on the top of the feeding pipe, and the feeding pipe is obliquely fixedly installed on the outer wall of the crushing box.

[0009] Preferably, a first stepper motor is fixedly connected to the top of the crushing box, and an output shaft is fixedly connected to the output end of the first stepper motor. The bottom end of the output shaft passes through the crushing box and the feeding pipe in sequence and extends into the storage tank.

[0010] Preferably, a plurality of crushing blades are fixedly connected to the outer wall of the output shaft, and the crushing blades are located inside the crushing chamber.

[0011] Preferably, a plurality of diffuser plates are fixedly connected to the outer circumference of the output shaft, and the diffuser plates are located below the feeding pipe.

[0012] Preferably, a second stepper motor is fixedly connected to the top of the storage tank, an inclined stirring shaft is rotatably connected to the inner wall of the storage tank, the end of the stirring shaft is fixedly connected to the output end of the second stepper motor, and multiple stirring blades are fixedly connected to the outer wall of the stirring shaft.

[0013] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0014] 1. The outlet of the pneumatic diaphragm pump is connected to the bottom drain of the quench tower. The air supply pipe provides the air power source to the pneumatic diaphragm pump. The end of the liquid inlet pipe of the storage tank is connected to the demineralized water supply pipe. The pneumatic diaphragm pump extracts the alkaline solution from the storage tank through the connecting pipe and delivers the alkaline solution to the quench tower through the liquid supply pipe. The feeding component and liquid inlet component can easily deliver sodium hydroxide powder and demineralized water into the storage tank, ensuring a sufficient supply of alkaline solution, facilitating the pH control of the quench tower, and ensuring safety, reliability, and unlimited usage.

[0015] 2. The first stepper motor drives the output shaft to rotate, which in turn drives the crushing blade and the diffuser plate to rotate simultaneously. The crushing blade crushes the sodium hydroxide tablets, and the diffuser plate diffuses the crushed sodium hydroxide powder into the storage tank, thus facilitating the uniform dispersion of sodium hydroxide powder into the demineralized water.

[0016] 3. The second stepper motor drives the stirring shaft to rotate, which in turn drives the stirring blades to rotate. The stirring blades mix the sodium hydroxide powder and the demineralized water, thereby improving the fusion efficiency of the sodium hydroxide powder and the demineralized water. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal installation structure of the storage tank of this utility model.

[0019] In the diagram: 1. Storage tank; 2. Check valve; 3. Flow meter; 4. Transfer pump; 5. Alkali concentration meter; 6. Feed pipe; 7. Crushing box; 8. Feed pipe; 9. First stepper motor; 10. Output shaft; 11. Crushing blade; 12. Diffuser plate; 13. Second stepper motor; 14. Stirring shaft; 15. Stirring blade; 16. Pneumatic diaphragm pump; 17. Connecting pipe; 18. First valve; 19. First hose; 20. Gas supply pipe; 21. Inlet valve; 22. Liquid supply pipe; 23. Second valve; 24. Second hose. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] like Figure 1 As shown, a pH adjustment device for a quench tower of a sulfur recovery unit includes a storage tank 1, an alkali concentration detector 5, a connecting pipe 17, a first hose 19, a first valve 18, a pneumatic diaphragm pump 16, a gas delivery pipe 20, an inlet valve 21, and a feeding assembly and a liquid delivery assembly installed on the storage tank 1. The alkali concentration detector 5 is installed inside the storage tank 1. The connecting pipe 17 is fixedly connected to the storage tank 1. The first hose 19 is fixedly installed at the end of the connecting pipe 17. The first valve 18 is fixedly installed on the connecting pipe 17. The pneumatic diaphragm pump 16 is fixedly installed at the end of the first hose 19. The gas delivery pipe 20 is fixedly installed at the end of the pneumatic diaphragm pump 16. The inlet valve 21 is fixedly installed on the gas delivery pipe 20.

[0022] In the above structure, the pneumatic diaphragm pump 16 extracts the alkaline solution from the storage tank 1 through the connecting pipe 17 and delivers the alkaline solution to the quench tower through the delivery pipe 22. The feeding assembly and the liquid inlet assembly can easily deliver sodium hydroxide powder and demineralized water into the storage tank 1, ensuring a sufficient supply of alkaline solution, facilitating the pH control of the quench tower, and ensuring safety, reliability, and unlimited usage.

[0023] like Figure 1As shown, the pneumatic diaphragm pump 16 is fixedly connected to the infusion end with an infusion pipe 22, the outer wall of the infusion pipe 22 is fixedly connected with a second valve 23, and the end of the infusion pipe 22 is fixedly connected with a second hose 24; the infusion assembly includes a check valve 2, a flow meter 3, and a delivery pump 4, which are installed sequentially from far to near on the infusion pipe of the storage tank 1.

[0024] In the above structure, the supply of demineralized water can be measured through the flow meter 3 to achieve quantitative supply.

[0025] like Figure 2 As shown, the feeding assembly includes a feeding pipe 6, a crushing box 7, and a feeding pipe 8. The feeding pipe 6 is fixedly installed on the top of the storage tank 1, the crushing box 7 is fixedly installed on the top of the feeding pipe 6, and the feeding pipe 8 is inclinedly fixedly installed on the outer wall of the crushing box 7. A first stepper motor 9 is fixedly connected to the top of the crushing box 7, and an output shaft 10 is fixedly connected to the output end of the first stepper motor 9. The bottom end of the output shaft 10 passes through the crushing box 7 and the feeding pipe 6 in sequence and extends into the storage tank 1. Multiple crushing blades 11 are fixedly connected to the outer wall of the output shaft 10, and the crushing blades 11 are located inside the crushing box 7. Multiple diffuser plates 12 are fixedly connected to the outer circumference of the output shaft 10, and the diffuser plates 12 are located below the feeding pipe 6.

[0026] In the above structure, the sodium hydroxide tablets are pulverized by the pulverizing blade 11, and the pulverized sodium hydroxide powder is diffused into the storage tank 1 by the diffusion plate 12.

[0027] like Figure 2 As shown, a second stepper motor 13 is fixedly connected to the top of the storage tank 1, and an inclined stirring shaft 14 is rotatably connected to the inner wall of the storage tank 1. The end of the stirring shaft 14 is fixedly connected to the output end of the second stepper motor 13, and multiple stirring blades 15 are fixedly connected to the outer wall of the stirring shaft 14.

[0028] In the above structure, the stirring shaft 14 drives the stirring blade 15 to rotate, and the stirring blade 15 mixes the sodium hydroxide powder and the demineralized water.

[0029] Working principle: The outlet of the pneumatic diaphragm pump 16 is connected to the bottom drain of the quench tower, and the air supply pipe 20 provides the air power source to the pneumatic diaphragm pump 16. The end of the liquid inlet pipe of the storage tank 1 is connected to the demineralized water supply pipe.

[0030] The delivery pump 4 quantitatively delivers demineralized water to the storage tank 1 through the check valve 2 and the flow meter 3, and introduces sodium hydroxide tablets into the crushing box 7 through the feed pipe 8;

[0031] The first step motor 9 drives the output shaft 10 to rotate, and the output shaft 10 drives the crushing blade 11 and the diffuser plate 12 to rotate simultaneously. The crushing blade 11 crushes the sodium hydroxide tablets, and the diffuser plate 12 diffuses the crushed sodium hydroxide powder into the storage tank 1.

[0032] The second stepper motor 13 drives the stirring shaft 14 to rotate, which in turn drives the stirring blade 15 to rotate, and the stirring blade 15 mixes the sodium hydroxide powder and the demineralized water.

[0033] The alkali concentration detector 5 measures the concentration of alkali in the storage tank 1;

[0034] The pneumatic diaphragm pump 16 extracts the alkali solution from the storage tank 1 through the connecting pipe 17 and delivers the alkali solution to the quench tower through the delivery pipe 22.

[0035] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pH adjustment device for the quench tower of a sulfur recovery unit, characterized in that, include: Storage tank (1), and feed assembly and liquid inlet assembly installed on storage tank (1); Alkali concentration detector (5), which is installed inside storage tank (1); A connecting pipe (17) is fixedly connected to the storage tank (1); The first hose (19) is fixedly installed at the end of the connecting pipe (17); The first valve (18) is fixedly installed on the connecting pipe (17); A pneumatic diaphragm pump (16) is fixedly installed at the end of a first hose (19); Gas delivery pipe (20), which is fixedly installed at the end of pneumatic diaphragm pump (16); An intake valve (21) is fixedly installed on the gas supply pipe (20).

2. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 1, characterized in that: The pneumatic diaphragm pump (16) is fixedly connected to an infusion tube (22) at its infusion end. A second valve (23) is fixedly connected to the outer wall of the infusion tube (22), and a second flexible tube (24) is fixedly connected to the end of the infusion tube (22).

3. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 2, characterized in that: The liquid inlet assembly includes a one-way valve (2), a flow meter (3), and a transfer pump (4), which are installed sequentially from far to near on the liquid inlet pipe of the storage tank (1).

4. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 3, characterized in that: The feeding assembly includes a feeding pipe (6), a crushing box (7) and a feeding pipe (8). The feeding pipe (6) is fixedly installed on the top of the storage tank (1), the crushing box (7) is fixedly installed on the top of the feeding pipe (6), and the feeding pipe (8) is obliquely fixedly installed on the outer wall of the crushing box (7).

5. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 4, characterized in that: The top of the crushing box (7) is fixedly connected to a first stepper motor (9), and the output end of the first stepper motor (9) is fixedly connected to an output shaft (10). The bottom end of the output shaft (10) passes through the crushing box (7) and the feeding pipe (6) in sequence and extends into the storage tank (1).

6. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 5, characterized in that: Multiple crushing blades (11) are fixedly connected to the outer wall of the output shaft (10), and the crushing blades (11) are located inside the crushing box (7).

7. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 6, characterized in that: Multiple diffuser plates (12) are fixedly connected to the outer circumference of the output shaft (10), and the diffuser plates (12) are located below the feeding pipe (6).

8. The pH adjustment device for the quench tower of the sulfur recovery unit according to claim 7, characterized in that: The storage tank (1) is fixedly connected to the top of a second stepper motor (13), and the inner wall of the storage tank (1) is rotatably connected to an inclined stirring shaft (14). The end of the stirring shaft (14) is fixedly connected to the output end of the second stepper motor (13), and multiple stirring blades (15) are fixedly connected to the outer wall of the stirring shaft (14).

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