Multiple phase SO3/SO2/H2O/H2SO4 electrolyzer

摘要

An electrolyzer ( 16 ) having opposed electrodes ( 44, 46 ) to produce hydrogen gas operates at a pressure greater than 5.5 MPa, where SO₂ is liquefied, and a reaction phase ( 48 ) of liquid SO₂ and H₂O which is passed to the electrolyzer where liquid SO₃ is formed as a bottom phase ( 54 ), and where the amount of water present is less than two moles per mole of liquid SO₂.