Department of Industrial and Information Engineering and of Econmics - University of L'Aquila, Piazzale Ernesto Pontieri, Monteluco di Roio 67100, L'Aquila, Italy.
Department of Industrial and Information Engineering and of Econmics - University of L'Aquila, Piazzale Ernesto Pontieri, Monteluco di Roio 67100, L'Aquila, Italy.
Waste Manag. 2021 Mar 1;122:15-25. doi: 10.1016/j.wasman.2020.12.034. Epub 2021 Jan 18.
Biodiesel production calls for innovative solutions to turn into a competitive process with a reduced environmental impact. One of the process bottlenecks stands in the immiscibility of oil and alcohol as raw materials, so mixing process largely impacts the overall process cost. This process step, if carried out by using hydrodynamic cavitation, has the possibility to become a benchmark for large scale applications. In this paper a process analysis of biodiesel production scheme is developed starting from two different feedstocks, virgin oil and waste cooking oil. At the first the traditional process scheme has been simulated, in a second simulation, the reactor for the biodiesel production is interchanged with a hydrodynamic cavitation reactor. In the paper, the comparison between the traditional and innovative process by using life cycle costing approach has been presented, thus providing indications for industrial technological implementation coming from a professional tool for process analysis. It is worth noting that the introduction of hydrodynamic cavitation reduces of about 40% the energy consumption with respect to the traditional process. As regards the total treatment costs, when using virgin oil as feedstock, they were in the range 820-830 €/t (innovative and traditional process, respectively); while starting from waste cooking oil the costs decreased of about 60%, down to 290-300 €/t (innovative and traditional process, respectively).
生物柴油生产需要创新的解决方案，以降低环境影响，使其成为具有竞争力的过程。其中一个工艺瓶颈在于油和醇作为原料的不混溶性，因此混合工艺在很大程度上影响了整个工艺成本。如果使用空化水力学进行该工艺步骤，就有可能成为大规模应用的基准。本文从两种不同的原料——原始油和废食用油开始，对生物柴油生产方案进行了工艺分析。首先模拟了传统工艺方案，然后在第二次模拟中，将生物柴油生产的反应器与空化水力学反应器进行了交换。本文通过生命周期成本分析方法对传统工艺和创新工艺进行了比较，从而为工业技术实施提供了来自专业工艺分析工具的指示。值得注意的是，与传统工艺相比，空化水力学的引入将能耗降低了约 40%。至于总处理成本，当使用原始油作为原料时，分别为 820-830 欧元/吨（创新和传统工艺）；而从废食用油开始，成本降低了约 60%，降至 290-300 欧元/吨（创新和传统工艺）。
