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Method and Apparatus for Detection, Measurement and Control of Sulfur-Trioxide and Other Condensables in Flue Gas
Method and Apparatus for Detection, Measurement and Control of Sulfur-Trioxide and Other Condensables in Flue Gas
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机译:烟气中三氧化硫和其他可冷凝物的检测,测量和控制方法和装置
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摘要
In a method of determining amounts of condensable species present in a gas containing condensable species a probe is placed into a gas containing condensable species. The probe has a plurality of spaced apart contacts on an outer non-conductive surface. That surface is heated at a selected heating rate and then cooled at a selected cooling rate over a selected time period. During that time period current flow between the contacts and the temperature of the non-conductive surface is monitored over the selected time period. Peaks in a plot of the current flow over the selected time period and the temperature for the time corresponding to each peak are then correlated to the condensable species has a kinetic dew point at each identified temperature. The identified temperature for each identified species is compared to a predetermined correlation of dew point temperature and concentration for that species to determine the concentration of that condensable species present in the gas.
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