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Explain with the chemical reactions listed below why the desired oxygen/hydrogen sulfide ratio in the feed to the Burner Reactor used in the Claus Process

  1. Explain with the chemical reactions listed below why the desired oxygen/hydrogen sulfide ratio in the feed to the Burner Reactor used in the Claus Process should be 1/3 of the stoichiometric oxygen/hydrogen sulfide ratio to theoretically achieve a complete removal of all sulfur species so that no H2S or SO2 would be leaving The Claus Unit. Note: Stoichiometric ratio (O2/H2S) for complete combustion of H2S = 3/2. 30 pts

H2S +(3/2)O2 -->H2O +SO2 (1) Combustion Reaction

2H2S +SO2-->2H2O +3S (2) Conversion Reaction


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