Acid-proof probe for detecting oxygen content of acid-making tail gas

Abstract

The utility model provides an acid -proof probe is used in the detection of oxygen content of acid -making tail gas, relates to the oxygen content detection technical field of acid -making tail gas, include: oxygen content detection probe body, the zirconium oxide sensor is assembled in the oxygen content detection probe body lower end rod body department, the oxygen content detection probe body rod surface fixed mounting has the limit board, the oxygen content detection probe body left side is provided with stainless steel transmission link, the small -size electric push rod is connected on the stainless steel transmission link upper end, the small -size electric push rod upper end is connected with micro motor through the rotary disc, the stainless steel transmission link lower end is connected with the acid -proof protective sheath through the link block, the oxygen content detection probe body lower end rod surface sleeve has the acid -proof protective sheath, the acid -proof protective sheath inside is provided with the acid -proof agent storage cavity. The utility model has solved the problem that the zirconium oxide probe used in the oxygen content detection equipment of existing tail gas is in the tail gas of strong corrosive nature for a long time and leads to the problem of the corrosion of probe is remarkable, the service life is lower.

Description

Technical Field

[0001] This utility model relates to the field of oxygen content detection technology in acid production tail gas, specifically to an acid corrosion resistant probe for detecting oxygen content in acid production tail gas. Background Technology

[0002] In the acid production process, the detection of oxygen content in the exhaust gas is crucial to ensuring production safety and product quality. Oxygen content detection can be achieved using an oxygen content analyzer. This instrument can monitor the oxygen concentration in the exhaust gas of the oxidation reactor, the exhaust gas of the crystallizer, the loose gas from the filter cake of the filter dryer, and the exhaust gas outlet gas of the exhaust gas compressor. The exhaust gas after combustion in the acid production process is highly corrosive. Zirconia probes are commonly used in exhaust gas oxygen content detection equipment. However, the zirconia probes used in existing exhaust gas oxygen content detection equipment are exposed to highly corrosive exhaust gas for a long time, resulting in significant corrosion of the probes and a short service life. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, an acid-resistant probe for detecting oxygen content in acid production tail gas is provided. This addresses the problem that the zirconia probes used in existing tail gas oxygen content detection equipment are exposed to highly corrosive tail gas for extended periods, resulting in significant corrosion and a short service life.

[0004] To achieve the above objectives, an acid corrosion resistant probe for detecting oxygen content in acid production tail gas is provided, comprising: an oxygen content detection probe body, wherein a zirconium oxide sensor is mounted on the lower end of the probe body.

[0005] A limiting plate is fixedly installed on the rod surface of the oxygen content detection probe body. A stainless steel transmission rod is provided on the left side of the oxygen content detection probe body. A small electric actuator is connected to the upper end of the stainless steel transmission rod. A micro motor is connected to the upper end of the small electric actuator through a rotating disk. A deacidification protective sleeve is connected to the lower end of the stainless steel transmission rod through a connecting block. A deacidification protective sleeve is sleeved on the rod surface of the lower end of the oxygen content detection probe body. A deacidification agent storage cavity is provided inside the deacidification protective sleeve.

[0006] Furthermore, an oxygen content detection instrument is connected to the upper right side of the oxygen content detection probe body via a wire, and the zirconium oxide sensor is sleeved in the deacidification protective sleeve cavity.

[0007] Furthermore, a sealing gasket is fixed to the lower surface of the upper end of the stainless steel transmission rod, and a small electric actuator is connected to the upper surface of the upper end of the stainless steel transmission rod.

[0008] Furthermore, the upper end of the small electric actuator is embedded and fixed at the lower end face of the rotating disk, and a micro motor is shaft-connected to the upper end of the rotating disk.

[0009] Furthermore, a groove is provided on the right side of the lower end face of the limiting plate; and a deacidification protective sleeve is snapped into the groove at the lower end of the limiting plate, and a stainless steel transmission rod is connected through the middle of the limiting plate.

[0010] Furthermore, a dividing mesh plate is fixed to the inner wall of the deacidification protective sleeve; and the dividing mesh plate is distributed around the outside of the zirconia sensor, and a connecting block is fixed to the left side of the deacidification protective sleeve.

[0011] Furthermore, the inner side of the deacidification protective sleeve is tightly fitted to the surface of the oxygen content detection probe body through a rubber sealing ring, and the deacidification agent storage cavity stores fumed silica nanoparticles.

[0012] The beneficial effects of this utility model are as follows: The acid-resistant probe for detecting oxygen content in acid production tail gas utilizes a stainless steel transmission rod to drive a deacidification protective sleeve filled with silica deacidifying agent to be fitted onto the zirconia sensor at the lower end of the oxygen content detection probe. The silica deacidifying agent removes acidic gases from the tail gas within the deacidification protective sleeve through adsorption and catalysis. This ensures that after use, the zirconia sensor is in a low-acid or acid-free space within the deacidification protective sleeve, facilitating the enclosure and isolating the oxygen content detection probe from long-term contact with the acid production tail gas. This reduces the corrosion of the oxygen content detection probe sensor end by the acid production tail gas, effectively protecting the oxygen content detection probe when not in operation, delaying the erosion of the oxygen content detection probe by the acid production tail gas, and extending the service life of the oxygen content detection probe for acid production tail gas. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the acid corrosion resistant probe for detecting oxygen content in acid production tail gas according to an embodiment of this utility model.

[0014] Figure 2 This is a front view cross-sectional view of the connection structure between the acid corrosion resistant probe for detecting oxygen content in acid production tail gas and the acid production tail gas pipe body, according to an embodiment of this utility model.

[0015] Figure 3 This is a partial cross-sectional view of the anti-acid corrosion probe according to an embodiment of the present invention.

[0016] Figure 4 This is a top view cross-sectional structural diagram of the deacidification protective sleeve and the limiting plate according to an embodiment of the present utility model.

[0017] In the diagram: 1. Oxygen content detection probe body; 11. Wire; 12. Zirconia sensor; 2. Stainless steel transmission rod; 21. Micro motor; 22. Small electric actuator; 23. Rotary disk; 24. Sealing gasket; 3. Limiting plate; 4. Deacidification protective sleeve; 41. Connecting block; 42. Deacidifying agent storage chamber; 43. Dividing mesh plate; 44. Rubber sealing ring. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, this utility model provides an acid corrosion resistant probe for detecting the oxygen content in acid production tail gas, comprising: an oxygen content detection probe body 1, and a zirconium oxide sensor 12 mounted on the lower end rod of the oxygen content detection probe body 1.

[0019] A limiting plate 3 is fixedly installed on the rod surface of the oxygen content detection probe body 1. A stainless steel transmission rod 2 is provided on the left side of the oxygen content detection probe body 1. A small electric actuator 22 is connected to the upper end of the stainless steel transmission rod 2. A micro motor 21 is connected to the upper end of the small electric actuator 22 through a rotating disk 23. A deacidification protective sleeve 4 is connected to the lower end of the stainless steel transmission rod 2 through a connecting block 41. A deacidification protective sleeve 4 is sleeved on the rod surface of the lower end of the oxygen content detection probe body 1. A deacidification agent storage cavity 42 is provided inside the deacidification protective sleeve 4.

[0020] In this embodiment, an oxygen content detection instrument is connected to the upper right side of the oxygen content detection probe body 1 via a wire 11, and a zirconia sensor 12 is sleeved in the cavity of the deacidification protective sleeve 4.

[0021] In a preferred embodiment, the oxygen content detection instrument is fixed in the pipeline of the acid production tail gas via the oxygen content detection probe body 1. The zirconia sensor 12 detects the oxygen content in the acid production tail gas based on the potential difference change of zirconia element under high temperature and platinum catalysis. The outer surface of the zirconia sensor 12 is coated with an acid corrosion resistant coating, and the zirconia sensor 12 is fitted into an independent cavity of the deacidification protective sleeve 4, which facilitates the zirconia sensor 12 being in a low-acid or acid-free space, thereby achieving the function of protecting the detection end of the oxygen content detection probe body 1 from acid corrosion.

[0022] In this embodiment, a sealing gasket 24 is fixed to the lower surface of the upper end of the stainless steel transmission rod 2, and a small electric actuator 22 is connected to the upper surface of the upper end of the stainless steel transmission rod 2. The upper end of the small electric actuator 22 is embedded and fixed at the lower end face of the rotating disk 23, and a micro motor 21 is shaft-connected to the upper end of the rotating disk 23.

[0023] In a preferred embodiment, the small electric actuator 22, rotating disk 23, and micro motor 21 connected to the upper end of the stainless steel transmission rod 2 are not located in the same space as the acid production tail gas, thus avoiding damage to the small electric actuator 22, rotating disk 23, and micro motor 21 from the downward view of the acid production tail gas. The micro motor 21 drives the stainless steel transmission rod 2 connected to the lower end to rotate 180 degrees through the rotating disk 23, causing the deacidification protective sleeve 4 connected to the lower end of the stainless steel transmission rod 2 to rotate, thereby moving the deacidification protective sleeve 4 away or to the lower end of the oxygen content detection probe body 1.

[0024] In this embodiment, a groove is provided on the right side of the lower end face of the limiting plate 3; and a deacidification protective sleeve 4 is snapped into the groove at the lower end of the limiting plate 3, and a stainless steel transmission rod 2 is connected through the middle of the limiting plate 3.

[0025] As a preferred embodiment, when the deacidification protective sleeve 4 is fitted onto the lower end of the oxygen content detection probe body 1, the deacidification protective sleeve 4 is located in the groove of the limiting plate 3. When the deacidification protective sleeve 4 descends and rotates away from the lower end of the oxygen content detection probe body 1, the upper surface of the deacidification protective sleeve 4 is in contact with the lower surface of the limiting plate 3, which facilitates preventing a large amount of acid production tail gas from entering the cavity of the deacidification protective sleeve 4.

[0026] In this embodiment, a dividing mesh plate 43 is fixed to the inner wall of the deacidification protective sleeve 4; and the dividing mesh plate 43 is distributed around the outside of the zirconium oxide sensor 12. A connecting block 41 is fixed to the left side of the deacidification protective sleeve 4. The inner side of the deacidification protective sleeve 4 is tightly fitted to the rod surface of the oxygen content detection probe body 1 through a rubber sealing ring 44. The deacidifying agent storage cavity 42 stores white carbon black nano-carbon particles.

[0027] As a preferred embodiment, the dividing mesh plate 43 facilitates the prevention of contact between the silica nanoparticles and the zirconium oxide sensor 12. The silica nanoparticles stored in the deacidifying agent storage chamber 42 have a high specific surface area and abundant pore structure. Through adsorption and catalysis, they remove acidic gases and effectively adsorb and neutralize acidic substances in the air inside the deacidifying agent storage chamber 42. This facilitates effective protection of the oxygen content detection probe when it is not in operation, reduces the corrosion of the oxygen content detection probe sensor end by the acid production tail gas, and improves the service life of the acid production tail gas oxygen content detection probe.

[0028] This utility model's acid-resistant probe for detecting oxygen content in acid production tail gas effectively solves the problem of significant corrosion and short service life of existing zirconia probes used in tail gas oxygen content detection equipment due to prolonged exposure to highly corrosive tail gas. It facilitates the enclosure and isolation of the oxygen content detection probe from prolonged contact with acid production tail gas, reducing the degree of corrosion on the sensor end of the probe. This effectively protects the oxygen content detection probe when not in operation, delays the erosion of the probe by acid production tail gas, and extends the service life of the probe. It is suitable for acid-resistant probes used in detecting oxygen content in acid production tail gas.

Claims

1. An acid-resistant probe for detecting oxygen content in acid production tail gas, comprising: An oxygen content detection probe body (1), wherein a zirconium oxide sensor (12) is mounted on the lower end rod of the oxygen content detection probe body (1), characterized in that: A limiting plate (3) is fixedly installed on the rod surface of the oxygen content detection probe body (1). A stainless steel transmission rod (2) is provided on the left side of the oxygen content detection probe body (1). A small electric push rod (22) is connected to the upper end of the stainless steel transmission rod (2). A micro motor (21) is connected to the upper end of the small electric push rod (22) through a rotating disk (23). A deacidification protective sleeve (4) is connected to the lower end of the stainless steel transmission rod (2) through a connecting block (41). A deacidification protective sleeve (4) is sleeved on the rod surface of the lower end of the oxygen content detection probe body (1). A deacidification agent storage cavity (42) is provided inside the deacidification protective sleeve (4).

2. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 1, characterized in that, The oxygen content detection probe body (1) is connected to an oxygen content detection instrument via a wire (11) on the upper right side, and the zirconium oxide sensor (12) is sleeved in the cavity of the deacidification protective sleeve (4).

3. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 1, characterized in that, A sealing gasket (24) is fixed on the lower surface of the upper end of the stainless steel transmission rod (2), and a small electric actuator (22) is connected to the upper surface of the rod head of the stainless steel transmission rod (2).

4. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 3, characterized in that, The upper end of the small electric actuator (22) is embedded and fixed at the lower end face of the rotating disk (23), and a micro motor (21) is axially connected to the upper end of the rotating disk (23).

5. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 1, characterized in that, The lower end face of the limiting plate (3) has a groove on the right side; and a deacidification protective sleeve (4) is snapped into the groove at the lower end of the limiting plate (3). A stainless steel transmission rod (2) is connected through the middle of the limiting plate (3).

6. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 1, characterized in that, The inner wall of the deacidification protective sleeve (4) is fixed with a dividing mesh plate (43); and the dividing mesh plate (43) is distributed around the outside of the zirconium oxide sensor (12). A connecting block (41) is fixed on the left side of the deacidification protective sleeve (4).

7. The acid-resistant probe for detecting oxygen content in acid production tail gas according to claim 6, characterized in that, The inner side of the deacidification protective sleeve (4) is tightly fitted to the rod surface of the oxygen content detection probe body (1) through a rubber sealing ring (44), and the deacidification agent storage cavity (42) stores white carbon black nano carbon particles.

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