I would like to ask: when analyzing the oxygen content in the flue gas in a process heating furnace, where should the monitoring ports be installed?
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I would like to ask: for monitoring the oxygen content in the flue gas of process heating furnaces in refineries and petrochemical plants, is a zirconia analyzer commonly used these days? Where is monitoring generally carried out, at the outlet of the radiation chamber or at the outlet of the convection section? What are the temperatures at these two locations approximately? To optimize combustion efficiency, it is generally necessary to also conduct online monitoring of CO in the flue gas, right? So where is CO monitoring generally installed? What method is commonly used nowadays?
Oxygen content measurement is used to determine the excess air level; therefore, it is usually carried out at a location between the top of the radiant section and the bottom of the convective section of the furnace, and zirconia is generally used for this purpose； Carbon monoxide detectors are generally installed in the smoke collection duct at the top of the convection section for monitoring
The temperature at the top of the radiation section must be very high, around 800 degrees, right? Can carbon monoxide also be monitored at this location?