(357a) Evolution of the Sulfur-Iodine Flowsheet, 1977-2007

The Sulfur-Iodine thermochemical hydrogen process has undergone several iterations since the cycle was first proposed in the early 1970's. These changes were driven by considerations of efficiency, economics and experimentally derived knowledge. The evolution of the current General Atomics flowsheet will be discussed. Flowsheet options proposed by other investigators will also be described.