vontage70:
I don't fully understand what you are trying to do. I think that you are burning some material (like a petroleum-derived liquid) that contains dimethyl disulfide, methyl mercaptan, dimethyl sulfide, hydrogen sulfide ... and you want to determine how much of those compounds still remain in the combustion flue gas. In other words , how much of each of those compounds has been completely combusted to CO2, H2O and SO2.
I don't think that you can make that determination simply by knowing the temperature and the excess oxygen in the flue gas. What you need to do is:
(1) Get an analysis of the material being burned to determine the total sulfur content (in weight percent). Also, measure the mass flow rate of liquid being burned. Use those data to calculate the total weight of sulfur being fed into your combustion per minute (or per hour).
(2) Get an analysis of the combustion flue gas to determine the SO2 content (in weight percent). Also determine the volumetric flow rate and the specific gravity of the flow gas. Use those data to calculate the total weight of SO2 in the flue gas per minute (or per hour). The total weight of sulfur in the flue gas per minute (or per hour) will be one-half of the total weight of SO2.
(3) Then you will have the weight of feed sulfur per unit of time and the weight of flue gas sulfur combusted per unit of time. That will tell you what percentage of your feed sulfur was completely combusted.
Milton Beychok
(Contact me at www.air-dispersion.com)
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