Sulfur-free air generator

Abstract

The utility model discloses a kind of sulfur-free air generators.The device includes base, power switch, drain valve, pressure stabilizing valve, pressure gauge, dehydration purification pipe, desulfurization purification pipe, detection tube, shell, power socket, air inlet, air outlet, drain hole, gas compressor, pressure controller, gas holder, purification pipe base, air hole, wherein gas compressor is connected with purification pipe base, dehydration purification pipe, desulfurization purification pipe and detection tube are connected in order by air hole, gas holder is connected with pressure controller, other parts are connected by gas circuit and circuit.The sulfur-free air generator provided by the utility model provides stable output dry sulfur-free high-purity air, provides clean gas source for sample pretreatment, ensures that all sulfur signals come from sample itself, guarantees the accuracy and reliability of gas analysis data, avoids the corrosion of sulfide to instrument, reduces operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically a sulfur-free air generator. Background Technology

[0002] Waste lubricating oil hydrotreating technology demonstrates significant advantages in resource recycling and environmental protection. With the nation's promotion of environmental protection and the circular economy, hydrotreating, due to its green and efficient nature, is becoming a core direction for industry upgrading. This technology uses high-temperature, high-pressure catalytic hydrogenation to remove sulfur and nitrogen impurities and achieve ring-opening reactions of aromatics, producing high-value-added base oils that meet or exceed Group II standards. In the research and development of catalysts for waste lubricating oil hydrorefining, monitoring the trend changes in H2S concentration in the outlet gas of the hydrogenation reaction directly reflects the catalyst's immediate activity, thus determining whether the catalyst is poisoned or deactivated by carbon buildup, playing a crucial early warning role. Furthermore, based on the H2S concentration in the outlet gas, process parameters can be optimized to improve product yield while ensuring desulfurization effectiveness.

[0003] Currently, gas chromatographs, used for analyzing gases from the hydrogenation reaction of waste lubricating oil, rely heavily on the purity of the carrier and auxiliary gases for detection accuracy. Traditional analyses often use compressed air or cylinder air as the combustion or driving gas; however, the trace amounts of sulfides they contain can severely interfere with the detection results. On the one hand, this leads to increased baseline noise and decreased sensitivity, particularly causing serious interference with the detection of sulfides; on the other hand, it may contaminate the chromatographic column and detector, shortening the lifespan of critical components.

[0004] Therefore, developing a sulfur-free air generator aligns with the trend of intelligent and green development in laboratories and is a key support for ensuring the efficient development and industrial application of waste lubricating oil hydrorefining technology. Summary of the Invention

[0005] To address the technical problem of sulfur-containing air output from air generators, this utility model provides a sulfur-free air generator. The device includes a base 1, a power switch 2, a drain valve 3, a pressure regulating valve 4, a pressure gauge 5, a dehydration and purification tube 6, a desulfurization and purification tube 7, a detection tube 8, a housing 9, a power socket 10, an air inlet 11, an air outlet 12, a drain hole 13, a gas compressor 14, a pressure controller 15, an air storage tank 16, a purification tube base 17, and an air vent 18. It features high-purity, water-free, and sulfur-free air with stable output pressure.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the air inlet 11 is connected to the gas compressor 14 through the gas circuit, the gas compressor 14 is connected to the air hole 18 on the purifier base 17 through the gas circuit, the dehydration purification pipe 6, the desulfurization purification pipe 7 and the detection pipe 8 are on the purifier base 17, the air hole 18 is connected to the gas storage tank 16, the gas storage tank 16 is connected to the pressure controller 15 and then to the air outlet 12, and the drain hole 13 is connected to the gas compressor 14.

[0007] Furthermore, the dehydration purification tube 6, the desulfurization purification tube 7, and the detection tube 8 are connected in series through the air vent 18, which simplifies the gas path. The detection tube 8 is at the end and can detect the degree of dehydration and desulfurization of the gas.

[0008] Furthermore, the purification tube base 17 adopts an embedded design, and the dehydration purification tube 6, desulfurization purification tube 7 and detection tube 8 can be replaced at any time during their service life according to the dehydration, desulfurization and detection effects.

[0009] Furthermore, the dehydration and purification tube 6, the desulfurization and purification tube 7, and the detection tube 8 are embedded in the outer shell 9, which facilitates the observation of the dehydration and desulfurization detection effect during operation.

[0010] Furthermore, the air storage tank 16 is connected to the pressure controller 15 and is regulated by the pressure regulating valve 4 to control the output air pressure at 0.4 MPa.

[0011] The beneficial effects of the sulfur-free air generator provided by this utility model are as follows: 1. The external dehydration and purification pipe 6, desulfurization and purification pipe 7 and detection pipe 8 can be used to check at any time whether the purification pipe has played a role in dehydration and desulfurization. 2. The purification tube base 17 is designed to be embedded, making it easy to replace the materials of the dehydration purification tube 6, desulfurization purification tube 7 and detection tube 8 at any time; 3. Dehydrated and desulfurized air ensures that sulfide detection is not affected by background noise in gas analysis, and accurately quantifies the concentration data of byproducts such as H2S, ensuring accuracy and reliability. 4. It provides a stable output of high-purity, anhydrous, and sulfur-free air, preventing the subsequent generation of hydrogen sulfide that corrodes the equipment and reducing operating and maintenance costs. Attached Figure Description

[0012] Figure 1 This is the front view of the present utility model. Figure 2 This is a side sectional view of the present invention. Figure 3 Rear view of this utility model Figure 4 A partial schematic diagram of the purification system. Figure 1Middle: 1. Base; 2. Power switch; 3. Drain valve; 4. Pressure regulator; 5. Pressure gauge; 6. Dehydration and purification tube; 7. Desulfurization and purification tube; 8. Detection tube; 9. Outer casing. Figure 2 Middle section: Power socket 10, Air inlet 11, Air outlet 12, Drain hole 13, Gas compressor 14, Pressure controller 15, Gas tank 16, Purification tube base 17 Figure 4 Middle: Stomata 18 Detailed Implementation

[0013] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example 1

[0014] To address the issue that the presence of sulfur in the air can affect gas test data, this invention provides a sulfur-free air generator. The device includes a base 1, a power switch 2, a drain valve 3, a pressure regulating valve 4, a pressure gauge 5, a dehydration and purification tube 6, a desulfurization and purification tube 7, a detection tube 8, a housing 9, a power socket 10, an air inlet 11, an air outlet 12, a drain hole 13, a gas compressor 14, a pressure controller 15, a gas storage tank 16, a purification tube base 17, and an air vent 18.

[0015] Air inlet 11 is connected to gas compressor 14 via a gas path. Gas compressor 14 is connected to air vent 18 on purifier base 17 via a gas path. Dehydration purification pipe 6, desulfurization purification pipe 7 and detection pipe 8 are on purifier base 17. Air vent 18 is connected to gas storage tank 16. Gas storage tank 16 is connected to pressure controller 15 and then to air outlet 12. Drain hole 13 is connected to gas compressor 14.

[0016] The dehydration purification tube 6, desulfurization purification tube 7, and detection tube 8 are connected in series through air vent 18, simplifying the air purification path and achieving the purpose of dehydration and desulfurization in sequence. The dehydration purification tube 6, desulfurization purification tube 7, and detection tube 8 are embedded in the purification tube base, and the materials in the purification tube and the detection tube can be replaced at any time according to the color change of the detection material in the detection tube. The dehydration purification tube 6, desulfurization purification tube 7, and detection tube 8 are embedded in the outer shell 9, which makes it convenient to pay attention to the dehydration and desulfurization effect at any time during instrument operation and replace the materials in a timely manner.

[0017] The operating mode of this utility model is as follows: Connect the power socket 10 and turn on the power switch 2. Air enters the gas compressor 14 through the air inlet 11. The compressed gas passes through the air hole 18 on the purifier base 17, and then sequentially enters the dehydration purification tube 6 and the desulfurization purification tube 7 for dehydration and desulfurization treatment. It then enters the detection tube 8 to detect whether the air contains water or sulfur. Finally, the purified air is stored in the air tank 16. When using the air in the air tank 16, adjust the pressure controller 15 using the pressure regulating valve 4 to maintain the pressure on the pressure gauge 5 at 0.4 MPa, and then deliver the air from the air outlet 12 to other instruments. Simultaneously, the drain valve 3 needs to be opened periodically to drain the water inside the gas compressor 14 through the drain hole 13.

[0018] The embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make modifications or alterations to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A sulfur-free air generator, characterized in that: Includes base (1), power switch (2), drain valve (3), pressure regulator (4), pressure gauge (5), dehydration and purification tube (6), desulfurization and purification tube (7), detection tube (8), outer shell (9), power socket (10), air inlet (11), air outlet (12), drain hole (13), gas compressor (14), pressure controller (15), gas storage tank (16), purification tube base (17), and air hole (18); the air inlet (11) is connected to the gas compressor (14) through the gas circuit, the gas compressor (14) is connected to the air hole (18) on the purifier base (17) through the gas circuit, the dehydration and purification tube (6), the desulfurization and purification tube (7) and the detection tube (8) are on the purifier base (17), the air hole (18) is connected to the gas storage tank (16), the gas storage tank (16) is connected to the pressure controller (15) and then to the air outlet (12), and the drain hole (13) is connected to the gas compressor (14).

2. The sulfur-free air generator according to claim 1, characterized in that: The dehydration purification tube (6), the desulfurization purification tube (7), and the detection tube (8) are connected in series through the air hole (18).

3. A sulfur-free air generator according to claim 1, characterized in that: The dehydration purification tube (6), the desulfurization purification tube (7), and the detection tube (8) are embedded in the purification tube base (17).

4. A sulfur-free air generator according to claim 1, characterized in that: The dehydration purification tube (6), the desulfurization purification tube (7), and the detection tube (8) are embedded in the outer shell (9).

5. A sulfur-free air generator according to claim 1, characterized in that: The gas storage tank (16) is connected to the pressure controller (15) via a gas line.

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