The transesterification process with potassium hydroxide (KOH) catalyst and the methanol supercritical process were evaluated by Aspen HYSYS software. Castor oil and methanol were used as feed and alcohol. In order to accomplish verification, the simulation results were compared to a laboratory research. For economic analysis, these results were transferred to Aspen Economic Analyzer software. Piping and process equipment cost were calculated for the two processes. Additionally, direct and indirect costs of these processes were estimated.

中文翻译：

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常规和超临界酯交换用于生物燃料生产的技术和经济分析

通过Aspen HYSYS软件评估了氢氧化钾（KOH）催化剂的酯交换过程和甲醇超临界过程。蓖麻油和甲醇用作进料和酒精。为了完成验证，将模拟结果与实验室研究进行了比较。为了进行经济分析，将这些结果转移到Aspen经济分析器软件中。计算了这两个过程的管道和过程设备成本。此外，估计了这些过程的直接和间接成本。