Flowsheet study of the thermochemical water-splitting iodine–sulfur process for effective hydrogen production

A sulfur-iodine flowsheet using precipitation, electrodialysis, and membrane separation to produce hydrogen

“…-The secondary helium from the IHX flows through the SO 3 and H 2 SO 4 decomposers, and is then split in two ways, to the H 2 SO 4 vaporizer and to the HI decomposer. -The thermal energy required at the HI distillation column, the sulfuric acid refined column, the isothermal flash drum, and the sulfuric acid distillation column has to be supplied by the sensible and latent heat of the SI process stream to achieve the highest thermal efficiency.…”

“…The SI cycle was initially introduced by the General Atomic (GA) Company [1] and has been extensively studied in Japan [2,3], France [4,5], and China [6]. Currently, the process is well defined as a whole according to the flowsheet studies performed by GA. As presented in Fig.…”

Application of gas-cooled Accelerator Driven System (ADS) transmutation devices to sustainable nuclear energy development

“…?thb)-This efficiency has been evaluated by different authors, ranging from a maximum of the order of 57-51% (Kasahara et al, 2007b;Goldstein et al, 2005). The best estimate of the practical implementation of this process ranges from 56 to 34% (Ozturk et al, 1995;Kasahara et al, 2007b).…”

“…?thb)-This efficiency has been evaluated by different authors, ranging from a maximum of the order of 57-51% (Kasahara et al, 2007b;Goldstein et al, 2005). The best estimate of the practical implementation of this process ranges from 56 to 34% (Ozturk et al, 1995;Kasahara et al, 2007b). Taken an efficiency around 47%, as reported by other authors (Mathias and Brown, 2003), the amounts of Hydrogen that could be generated by our 100 MWTADSEA here described are in the order of 0.39 kg/s, that implies around 10,000 tons per year, and an equivalent power of 46.8 MW assuming a Hydrogen Low Heating Value of 120 MJ/kg.…”

Comparison of various circuit designs in the HI decomposition section of the iodine–sulfur process

“…It has been studied since 1970s [1], and has attracted extensive attention and interest because of its potential to be coupled with a nuclear reactor, a hightemperature gas-cooled reactor in particular [2], or a solar plant [3,4] to realize high efficient, mass hydrogen production. The IeS process comprises three sections: Bunsen section, sulfuric acid decomposition section (SA section), and hydriodic acid decomposition section (HI x section).…”