Condensation cathode compartment

The anolyte is evaporated to increase the chloride concentration from 75-250 gdm and cobalt, and most of the iron, is then extracted by the organic solvent. The nickel containing raffinate is diluted by condensate from the evaporation and returned to the Ni-cathode compartments in the diaphragm electrolytic cells for precipitation of nickel. Stripping of cobalt from the organic solvent is performed with the weakly acidic condensate. The strip liquor is fed to the Co-cathode compartment in the electrolytic cells. 

Combined Brayton-Rankine Cycle The combined Brayton-Rankine cycle. Figure 9-14, again shows the gas turbine compressor for the air flow to the cell. This flow passes through a heat exchanger in direct contact with the cell it removes the heat produced in cell operation and maintains cell operation at constant temperature. The air and fuel streams then pass into the cathode and anode compartments of the fuel cell. The separate streams leaving the cell enter the combustor and then the gas turbine. The turbine exhaust flows to the heat recovery steam generator and then to the stack. The steam produced drives the steam turbine. It is then condensed and pumped back to the steam generator. 

The water balance inside FCS requires at least a water condenser located at the outlet of the stack. This device has the dual role to condense a significant part of the water content of the warm and wet cathodic outlet stream (a mixuire of nitrogen, oxygen, and water vapor with the probable presence of small water liquid droplets) for re-cycling in humidification devices, and to transfer/recover a part of significant thermal energy content of the cathode stream. The condenser could also collect, but in minor quantities, the excess water content of the anode compartment. The condenser is then aimed at maintaining the vehicle endurance and to cooperate to efficiency maximization. 

This sub-system includes in particular condensers and demisters at the outlet of cathode and anode compartments to recover a significant part of the high water... 

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