Journal
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume 40, Issue 11, Pages 1509-1517Publisher
WILEY
DOI: 10.1002/er.3535
Keywords
iodine sulfur process; integrated laboratory-scale facility; mass balance; flowsheet design; nuclear hydrogen production
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Funding
- National T Major Project [ZX06901]
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The iodine sulfur (IS) thermochemical water-splitting process, which has various merits, is considered as one of the most promising nuclear hydrogen production methods and has been intensively studied by many institutions. At the Institute of Nuclear and New Energy Technology of Tsinghua University in China, a proof-of-concept closed IS facility was built, and a closed-cycle experiment was conducted. Currently, as a prospective research item of the high-temperature gas-cooled reactor demonstration plant project, an integrated laboratory-scale IS facility (IS-100) that aims to achieve long-term stable operation of IS cycle is being developed, and the design and optimization of the flowsheet for the IS cycle are conducted. The specifications of the facility are presented along with simulation models. Mass balance and compositions of the streams in the Bunsen, sulfuric acid, and HI sections are calculated using Aspen Plus software with OLI database and embedded self-made models. Based on the comparison between mass of recycled streams and heat requirements as well as sensitivity analysis, the optimized flowsheet and the operational parameters are proposed. In addition, the preliminary closed cycle experiment results on IS-100 were presented, and the efficiency of the IS process and the R&D efforts to improve its efficiency are discussed. Copyright (C) 2016 John Wiley & Sons, Ltd.
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