Does the percentage composition of flue gas emissions refer to the content in wet flue gas or dry flue gas?
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Does the percentage composition of flue gas emissions refer to the content in wet flue gas or dry flue gas? May I ask, in online flue gas monitoring, does the percentage composition of various components refer to the proportion of dry flue gas or wet flue gas? For example, many power plants and coking plants now have various online monitoring instruments for the components of flue gas in their chimneys. The value shown by these instruments, such as 8% oxygen content, does this 8% refer to the oxygen content in dry flue gas or in wet flue gas? For another example, there are some separate instruments for analyzing flue gas, such as those that use infrared spectroscopy or ultraviolet differential methods. Do these instruments indicate the oxygen content of dry flue gas or wet flue gas after analysis?
The online monitoring and analysis instruments installed at the flue gas emission outlets generally draw in the flue gas, which is then pre-treated through condensation and filtration before being fed into the analyzer module for measurement; the result is the percentage composition of various components in the dry flue gas.
It's very simple. Look at him – did he remove the water before testing these components? First remove the water and then conduct the measurement; it will definitely be dry flue gas, otherwise it is wet flue gas. If it is measured directly in the flue, then it is also the concentration in the wet flue gas.
Unless otherwise specified, it refers to dry flue gas