Mixed Potassium-cesium Seeding in Open-cycle Mhd Power Generation.
13th Symp Eng Aspects of Magnetohydrodynamics Stanford Univ California 3/26-28/73 Pp V51-v56 :V51-v56
The high price of pollucite ore, its limited availability, and the need to provide stack removal of So2 present formidable obstacles to the use of pure cesium as a seeding material in open-cycle mhd power generation. Cost estimates indicate that mixed potassium-cesium seeding is preferable to the use of either pure cesium or pure potassium. Cheaper electricity and higher open-cycle mhd operating efficiencies result from the use of mixed seed. Savings of $3 million per year in power costs for a 1,000 mwe open-cycle mhd powerplant are envisioned if the mixed seeding technique is adopted. A coal-burning combustion experiment employing a 15 mole-percent cesium carbonate-85 mole-percent potassium carbonate seed was conducted in the Bureau of Mines MHD pilot plant. The resulting mixed seed-fly ash residue was leached with hot water. It was established that cesium seed recovery is of no greater order of difficulty than that for potassium.
13th Symp. Eng. Aspects of Magnetohydrodynamics, Stanford Univ., California, 3/26-28/73, Pp V51-v56