Methanol production using hydrogen from concentrated solar energy |
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| Affiliation: | 1. German Aerospace Center (DLR), Linder Hoehe, 51147 Koeln, Germany;2. KTH Royal Institute of Technology, Brinnelvagen 68, Stockholm, Sweden;1. INVAP SE, Avenida Comandante Luis Piedrabuena 4950, (8400) San Carlos de Bariloche, República Argentina;2. Complejo Tecnológico Pilcaniyeu, Comisión Nacional de Energía Atómica, Avenida Bustillo 9500, (8400) San Carlos de Bariloche, República Argentina;3. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Bustillo 9500, (8400) San Carlos de Bariloche, República Argentina;1. Department of Mechatronics Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey;2. Department of Mechanical Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey;1. Department of Mechatronics Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey;2. Department of Mechanical Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey;1. Institute of Solar Research, Deutsches Zentrum für Luft- und Raumfahrt (DLR)/German Aerospace Center, Linder Höhe, 51147, Köln, Germany;2. Abengoa Energía, c/ Energía Solar 1, 41014, Sevilla, Spain;3. Institute of Power Engineering, Professorship of Solar Fuel Production, TU Dresden, 01062, Dresden, Germany;4. University of Seville, Department of Energy Engineering, Camino de Los Descubrimientos S/n, 41092, Seville, Spain;1. Solar Energy Research Institute, Yunnan Normal University, Yunnan, China;2. Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan |
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| Abstract: | Concentrated solar thermal technology is considered a very promising renewable energy technology due to its capability of producing heat and electricity and of its straightforward coupling to thermal storage devices. Conventionally, this approach is mostly used for power generation. When coupled with the right conversion process, it can be also used to produce methanol. Indeed methanol is a good alternative fuel for high compression ratio engines. Its high burning velocity and the large expansion occurring during combustion leads to higher efficiency compared to operation with conventional fuels. This study is focused on the system level modeling of methanol production using hydrogen and carbon monoxide produced with cerium oxide solar thermochemical cycle which is expected to be CO2 free. A techno-economic assessment of the overall process is done for the first time. The thermochemical redox cycle is operated in a solar receiver-reactor with concentrated solar heat to produce hydrogen and carbon monoxide as the main constituents of synthesis gas. Afterwards, the synthesis gas is turned into methanol whereas the methanol production process is CO2 free. The production pathway was modeled and simulations were carried out using process simulation software for MW-scale methanol production plant. The methanol production from synthesis gas utilizes plug-flow reactor. Optimum parameters of reactors are calculated. The solar methanol production plant is designed for the location Almeria, Spain. To assess the plant, economic analysis has been carried out. The results of the simulation show that it is possible to produce 27.81 million liter methanol with a 350 MWth solar tower plant. It is found out that to operate this plant at base case scenario, 880685 m2 of mirror's facets are needed with a solar tower height of 220 m. In this scenario a production cost of 1.14 €/l Methanol is predicted. |
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| Keywords: | Hydrogen Solar energy Methanol Thermochemical redox cycle Synthesis gas |
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