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A furnace is necessary for the combustion of liquid sulfur in air: ... . The sulfur dioxide then undergoes a catalytic conversion into sulfur trioxide, ... , in an adiabatic reactor: ... . Sulfur trioxide is prepared on a massive scale as a precursor to sulfuric acid. This Demonstration computes the extent of reaction, ... , the exit temperature, ... , and the composition of the effluent for the adiabatic converter used for ... production. To do so, one has to write: (1) the chemical equilibrium using the equilibrium constant ... , obtained by fitting the free energy data versus temperature for ... and ... , and (2) the energy balance: ... , which exploits the fact that the converter is adiabatic. Finally, the temperature at the entrance of the converter is chosen equal to ... =700 Kelvin, a value that depends on the energy produced in the furnace, ... , used to generate live or superheated steam. The user-specified values of the mole fraction of ... are in the range typically used in the industry.
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