Methylcyclohexane production under fluctuating hydrogen flow rate conditions
| Autor: | Tomoki Matsuda, Taku Tsujimura, Kazuki Kano, Hirokazu Kojima |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment business.industry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Hydrogen purifier Energy storage 0104 chemical sciences Renewable energy Hydrogen carrier chemistry.chemical_compound Fuel Technology Electricity generation chemistry Chemical engineering Hydrogen fuel Methylcyclohexane 0210 nano-technology business |
| Zdroj: | International Journal of Hydrogen Energy. 46:9433-9442 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.12.117 |
| Popis: | Energy storage using liquid organic hydrogen carrier (LOHC) is a long-term method to store renewable energy with high hydrogen energy density. This study investigated a simple and low-cost system to produce methylcyclohexane (MCH) from toluene and hydrogen using fluctuating electric power, and developed its control method. In the current system, hydrogen generated by an alkaline water electrolyzer was directly supplied to hydrogenation reactors, where hydrogen purification equipment such as PSA and TSA is not installed to decrease costs. Hydrogen buffer tanks and compressors are not equipped. In order to enable MCH production using fluctuating electricity, a feed-forward toluene supply control method was developed and introduced to the system. The electrolyzer was operated under triangular waves and power generation patterns of photovoltaic cells and produced hydrogen with fluctuating flow rates up to 7.5 Nm3/h. Consequently, relatively high purity of MCH (more than 90% of MCH mole fraction) was successfully produced. Therefore, the simplified system has enough potential to produce MCH using fluctuating renewable electricity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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