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PA10 (1)

PA10 (1) - PROBLEM ANALYSIS#ThelastONE From Wikipedia...

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PROBLEM ANALYSIS #ThelastONE!!! From Wikipedia: “ Sulfuric acid is a very important commodity chemical, and indeed, a nation's sulfuric acid production is a good indicator of its industrial strength. World production in 2004 was about 180 million tonnes, with the following geographic distribution: Asia 35%, North America (including Mexico) 24%, Africa 11%, Western Europe 10%, Eastern Europe and Russia 10%, Australia and Oceania 7%, South America 7%” Sulfuric is produced from elemental sulfur, oxygen, and water via the following reaction series: S (s) + O 2(g) SO 2(g) SO 2(g) + 0.5 O 2(g) SO 3(g) SO 3(g) + H 2 O (l) H 2 SO 4(l) At the end of this problem is the schematic of a process used to convert SO 2 into SO 3 (i.e., the 2 nd reaction in the series). Reactor A is used to generate combustion gases (by burning CO with 80% of the
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Unformatted text preview: theoretical air). The combustion gases then are used to generate steam and also to transfer heat to the reactants in reactor B in which SO 2 is converted into SO 3 . SO 2 and O 2 mixture (66.7 mole % SO 2 and 33.3 mole % O 2 ) enters reactor B at 298 K. SO 2, SO 3 , and O 2 mixture (58.6 mole % of the mixture is SO 3 ) leaves reactor B at 811 K. A portion of the combustion gases that are used to heat the reactants in reactor B are recycled. How many moles/hr CO is required if the rate at which SO 2 enters reactor B is 2200 moles/hr? H o f , CO, gas = -109.05 kJ/mol H o f , CO2, gas = -393.51 kJ/mol H o f , SO2, gas = -296.85 kJ/mol H o f , H2O, gas = -241.83 kJ/mol H o f , SO3, gas = -395.26 kJ/mol C p (for all gases and vapors): 30 J/mol.K...
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