In previous post about material balances, we can see that the flow of any component was in the same ratio to the flow of any other component, as the ratio of the concentrations of the two components. If one component passes unchanged through a process unit it can be used to tie the inlet and outlet compositions.
This method is very helpful for handling combustion calculations if the nitrogen in the combustion air is employed as the tie component and flows through unreacted.
Let’s see example below.
Carbon dioxide is added at a rate of 20 kg/h to an air stream and the air is sampled at a
sufficient distance downstream to ensure complete mixing. If the analysis shows 0.5%v/v CO2. Calculate the air-flow rate. Read More