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首页> 外文期刊>International Journal of Photoenergy >Renewable Energy Integration: Economic Assessment of Solar Energy to Produce Biodiesel at Supercritical Conditions
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Renewable Energy Integration: Economic Assessment of Solar Energy to Produce Biodiesel at Supercritical Conditions

机译：可再生能源整合：太阳能在超临界条件下生产生物柴油的经济评估

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In recent years, research on noncatalytic methods for biodiesel production has increased, mainly processes under supercritical conditions that allow the processing of waste vegetable oils (WVO) without the need to use catalysts, where the absence of catalyst simplifies the processes of purification of biodiesel. The high consumption of alcohol and energy to maintain the appropriate conditions of pressure and temperature of the reaction has turned the processes of supercritical conditions into an unfeasible method. However, the stages of biodiesel purification and methanol recovery are more straightforward, allowing the reduction of the total energy consumption by 25% compared to alkaline methods. Therefore, the present work describes a study through Aspen Plus® of the production of biodiesel by a process in supercritical conditions with WVO as raw material. Also, a solar collector arrangement was structured using the TRNSYS® simulator to supply energy to the process. To evaluate the economic feasibility of the proposed process, the installation of a pilot plant in Mexicali, Baja California, was considered. The internal rate of return (IRR) and the net present value (NPV) were determined for ten-year period. The planned system allows supplying solar energy, 69.5% of the energy required by the process, thus reducing the burning of fossil fuels and the operation cost. Despite the additional investment cost, for the solar collectors, the process manages to maintain a competitive production cost of USD 0.778/l of biodiesel. With an IRR of 31.7%, the investment is recovered before the fifth year of operation. The integration and implementation of clean technologies are vital in the development of the biofuels.
机译：近年来，对用于生物柴油生产的非催化方法的研究有所增加，主要是在超临界条件下进行的工艺，这些工艺允许无需使用催化剂即可加工废植物油（WVO），而无需催化剂可简化生物柴油的纯化工艺。为了维持合适的反应压力和温度条件而大量消耗酒精和能量已经使超临界条件的过程变成了不可行的方法。但是，生物柴油纯化和甲醇回收的步骤更为简单，与碱性方法相比，可将总能耗降低25％。因此，本工作描述了通过AspenPlus®在WVO为原料的超临界条件下生产生物柴油的研究。此外，使用TRNSYS®仿真器构造了太阳能收集器装置，以为过程提供能量。为了评估所提出方法的经济可行性，考虑在加利福尼亚下加利福尼亚州的墨西卡利安装一个试验工厂。确定十年期间的内部收益率（IRR）和净现值（NPV）。计划的系统允许提供太阳能，该能源占该过程所需能源的69.5％，从而减少了化石燃料的燃烧和运营成本。尽管增加了投资成本，但对于太阳能集热器而言，该工艺仍设法将竞争性生产成本维持在0.778美元/升的生物柴油中。 IRR为31.7％，可在运营的第五年之前收回投资。清洁技术的集成和实施对于生物燃料的开发至关重要。

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