Is it feasible to use a economizer to cool the conversion gas in order to generate steam?
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A four-stage single-conversion process is employed; after exiting the converter, the conversion gas undergoes heat exchange, resulting in a temperature reduction to 270 degrees Celsius, with a mass flow rate of 4413 kg/hr. A economizer is now used for heat exchange to generate steam, thereby reducing the temperature of the conversion gas from 270 degrees to 180 degrees. The temperature of the water fed into the economizer is 85 degrees, and the pressure is 1 Mpa. Dear sea friends, please analyze whether this heat exchange scheme is feasible
The gas composition is as follows: SO2 0.22%, SO3 27.59%, N2 59.70%, O2 12.49%. Mass flow rate: 4413.857 kg/hr; Volume flow rate: 4970.271 m3/hr
With such a high SO3 content, is it due to high-concentration conversion?
The SO2 conversion concentration is around 12%
The SO2 conversion concentration is around 12%
Then why is SO3 so high (27.59%)?