Cycle Development and Process Optimization of High-Purity Oxygen Production Using Silver-Exchanged Titanosilicates
| Autor: | Sayed Alireza Hosseinzadeh Hejazi, Libardo Estupiñan Perez, Steven M. Kuznicki, Arvind Rajendran |
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| Rok vydání: | 2017 |
| Předmět: |
Atmospheric air
Chromatography Argon General Chemical Engineering Oxygen evolution chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Vacuum swing adsorption 7. Clean energy 01 natural sciences Oxygen Industrial and Manufacturing Engineering 0104 chemical sciences Chemical engineering chemistry Cabin pressurization 13. Climate action Process optimization 0210 nano-technology |
| Zdroj: | Industrial & Engineering Chemistry Research. 56:5679-5691 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | Producing oxygen with purity higher than 95.0% from atmospheric air (78.0% N2, 21.0% O2, and 1.0% Ar) is challenging because of the similar physical properties of oxygen and argon. Silver-exchanged titanosilicates have shown the potential to separate these gases based on their thermodynamic affinities. In this study, various vacuum swing adsorption (VSA) cycle configurations including the simple Skarstrom cycle and more complicated 6-step VSA cycles were simulated using mathematical models to maximize O2 purity and recovery. The simulations were verified by conducting simple 3-step and Skarstrom VSA cycle experiments. A mixture of 95.0%/5.0% O2/Ar feed was considered in the simulations, and a rigorous multiobjective optimization was conducted to maximize O2 purity and recovery. The simulations predicted 27.3% recovery for a product with 99.5% purity for a 6-step cycle with pressure equalization and light product pressurization steps. The recovery for the same level of purity was improved significantly to ... |
| Databáze: | OpenAIRE |
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