Zirconia on the heating furnace
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This post was last edited by dongjiang1001 on 2011-9-22 at 15:14. What is meant by zirconia in heating furnaces? What are the properties of zirconia? I would appreciate your guidance.
This post was last edited by dongjiang1001 on 2011-9-22 at 15:15. It is generally referred to as zirconia; it should actually be called a zirconia oxygen analyzer, which is used to measure oxygen content.
Zirconia analyzers are primarily used to measure the oxygen concentration in flue gases during combustion processes; they can also be used to measure the oxygen concentration in non-combusting gases. An electrochemical cell with a constant temperature inside the sensor (an oxygen concentration difference cell, also referred to as a zirconium electrode) generates a millivolt potential, which directly reflects the oxygen concentration in the flue gas. The key component of an oxygen sensor is zirconia; porous platinum electrodes are coated on the inner and outer sides of the zirconia element to create a oxygen concentration difference cell. It is located at the top of the sensor. To maintain the battery at its rated operating temperature, a heater is installed in the sensor. The temperature of zirconia is kept constant using the temperature controller in the oxygen analyzer. The composition of a zirconia oxygen analyzer consists of an oxygen sensor (also known as an oxygen probe or oxygen detector), an oxygen analyzer (also known as a transmitter, transduction unit, converter, or analyzer), as well as the connection cables between them.
This post was last edited by dongjiang1001 on 2011-9-22 at 15:15. Zirconia is primarily used to detect the oxygen content at the furnace outlet; by using this oxygen level, the excess air coefficient in the boiler can be adjusted, thereby increasing the combustion temperature and enhancing the efficiency of the boiler. Please correct me.
This post was last edited by dongjiang1001 on 2011-9-22 at 15:15. Zirconia is essentially an oxygen content analyzer; my suggestion is to use it for detection purposes only, not for feedback and adjustment； Although feedback regulation can improve efficiency, this is not always the case in practice; it’s difficult to determine exactly what oxygen level in the flue gas is optimal. Moreover, instrument air is required for cleaning, otherwise the zirconia will get clogged, so this method isn’t that effective.
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