Which zirconia analyzer is suitable for sulfuric acid manufacturers?
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Oxide zirconium oxygen analyzers commonly used come equipped with a reference gas, which is usually air. Sulfur dioxide present in air can enter the oxide zirconium protective sleeve; when it comes into contact with water, it forms sulfurous acid, which then corrodes various components such as the oxygen sensor, thermocouples, and heating filaments. Once these components are corroded, the oxygen analyzer can no longer function properly. So how should our sulfuric acid manufacturers choose in this regard? ? ?
Water is not necessarily in a liquid state; below 100°C, it exists in the form of liquid water. Water in a gaseous state exists at temperatures above 100°C. The temperature in flue gas is quite high, and water generally exists in gaseous form. I’m not very proficient in this area and need to learn more*. Please forgive any mistakes I may make. :)
Water is not necessarily in a liquid state; below 100°C, it exists in the form of liquid water. Water in a gaseous state exists at temperatures above 100°C. The temperature in flue gas is quite high, and water generally exists in gaseous form. I’m not very proficient in this area and need to learn more*. Please forgive any mistakes I may make.
But the temperature in the flue is very high; it needs to be kept at a constant level, probably around 700 degrees. .
Also, ordinary zirconia probes are typically made of stainless steel 316L, which offers a fairly good level of corrosion resistance.
If the flue gas temperature is high, moisture exists in gaseous form, and what is measured by zirconia is also the wet oxygen in the flue gas. The protective sleeve of the zirconia probe is made of stainless steel material, providing a certain degree of corrosion resistance. However, zirconia devices are equipped with a reference gas; air is introduced directly into the protective sleeve, and this air contains small amounts of sulfur, which reacts with water or iron, thereby corroding the wires inside and preventing the zirconia from functioning properly. This situation is more prominent in sulfuric acid production environments or coal chemical industry environments.
The wires inside should be led up from the core of the corundum tube. .
They lead out from the protective sleeve, but due to the presence of reference gas, these wires are in contact with air. Could you please let me know if it’s convenient for you to provide a contact method, so I can send you a diagram of the probe structure.
568099860 is my QQ number. .