Numerical Modeling of Bayonet-Type Heat Exchanger and Decomposer for the Decomposition of Sulfuric Acid to Sulfur Dioxide
| Autor: | Valery Ivanovich Ponyavin, Yitung Chen, Vijaisri Nagarajan, Qiuwang Wang, Tzu-Chen Hung |
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| Rok vydání: | 2013 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Mechanical Engineering Wet sulfuric acid process SNOX process Sulfuric acid Condensed Matter Physics Flue-gas desulfurization chemistry.chemical_compound chemistry Chemical engineering Sulfur trioxide Thermochemical cycle Sulfur dioxide Hydrogen production |
| Zdroj: | Heat Transfer Engineering. 35:589-599 |
| ISSN: | 1521-0537 0145-7632 |
| DOI: | 10.1080/01457632.2013.837644 |
| Popis: | The growth of global energy demand during the 21st century, combined with the necessity to master greenhouse gas emissions, has led to the introduction of a new and universal energy carrier: hydrogen. The Department of Energy (DOE) proposed using a bayonet-type heat exchanger as a silicon carbide integrated decomposer (SID) to produce the sulfuric acid decomposition product sulfur dioxide, which can be used for hydrogen production within a sulfur–iodine thermochemical cycle. A two-dimensional computational model of SID having a boiler, superheater and decomposer was developed using GAMBIT and fluid. The thermal and chemical reaction analyses were carried out in FLUENT. The main purpose of this study is to obtain the decomposition percentage of sulfur trioxide for the integrated unit. Sulfuric acid (H2SO4), sulfur trioxide (SO3), sulfur dioxide (SO2), oxygen (O2), and water vapor (H2O) are the working fluids used in the model. Concentrated sulfuric acid liquid of 40 mol% was pumped into the inlet of the bo... |
| Databáze: | OpenAIRE |
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