Patent ID: 8034219
Filing Date: 2011-10-11
Classification: C25B,F22B

Abstract:
1. A hydrogen producing system comprising: a solid oxide electrolyzer cell having a cathode side and an anode side; wherein the cathode side comprises: a heat exchanger that lies down stream of an outlet of the solid oxide electrolyzer cell; the outlet being located on the cathode side of the solid oxide electrolyzer cell; a high temperature heat source that generates steam in a boiler at a temperature of about 400 to about 700° C. and a pressure of about 3 to about 20 kg/cm a compressor located upstream of the solid oxide electrolyzer cell, wherein the compressor is operative to blow air to sweep oxygen generated at the solid oxide electrolyzer cell to a turbine; and a secondary heat source upstream of the compressor to increase a temperature of air from the compressor, wherein the heat exchanger is operative to extract heat from the steam and hydrogen emanating from the cathode side of the solid oxide electrolyzer cell.