How to choose a furnace thermometer
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The thermometers in the waste acid incinerator keep breaking down, requiring frequent replacements which increases costs； The media used for burning include MMA waste acid, alkylated waste acid, ammonium sulfide solution, hydrogen sulfide, etc., and the furnace temperature is generally around 1050°C. What type of thermometer should be chosen?
When selecting a thermometer for waste acid incinerators, it is necessary to consider the thermometer’s high-temperature resistance, corrosion resistance, and long-term stability. Given that your furnace temperature is typically around 1050°C, and the medium contains highly corrosive substances such as hydrogen sulfide, here are several suitable types of thermometers: 1. **High-temperature ceramic thermocouples**: – Suitable for high-temperature environments, with excellent heat resistance. - The commonly used types are Type S (10% platinum-rhodium – platinum), Type R (13% platinum-rhodium – platinum), and Type B (30% platinum-rhodium – 6% platinum-rhodium). These thermocouples can operate at maximum temperatures of 1600°C to 1700°C, making them suitable for use in environments with temperatures up to 1050°C. 2. **Silicon carbide rod thermocouples**: - Can withstand extremely high temperatures, with a maximum operating temperature of up to 1600°C. - It has good antioxidant and anti-corrosion properties. 3. **High-temperature and corrosion-resistant protective sleeves**: – To improve the durability of thermocouples and reduce the frequency of replacement, high-temperature and corrosion-resistant protective sleeves can be used, such as those made of high-purity quartz or special alloy materials. 4. **Infrared thermometer**: - If frequent replacement of contact thermometers poses cost issues, consider using a non-contact infrared thermometer. - Infrared thermometers can measure temperature from a distance without coming into contact with the medium, reducing the risk of corrosion or damage. When selecting a thermometer, factors such as the installation location, measurement accuracy, and maintenance costs should also be taken into consideration. It is recommended to consult professional thermometer suppliers or technicians to select the most suitable thermometer model and configuration based on the specific operating environment and requirements. .
Sensor model: H-WRKK-750-FL. The sleeve material is imported MA956; the inner lining is made of imported silicon carbide with a diameter of Φ10, and the tube is made of imported corundum. The outer diameter of the reinforcement tube beneath the flange is ￠34×2, with a material of GH3030; the length of this reinforcement tube is 300 mm