Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Bioresour Technol. 2021 Jul;331:125005. doi: 10.1016/j.biortech.2021.125005. Epub 2021 Mar 17.
This paper proposes a conceptual design for the catalytic supercritical water gasification of soybean straw. The design consists of four process units for pretreatment, gasification, separation, purification and combustion. The economic feasibility of hydrogen production was evaluated based on a comprehensive cash flow analysis. The economic analysis suggested a minimum selling price of U.S. $1.94/kg for hydrogen. The cost of hydrogen produced is relatively lower compared to that of other biomass conversion processes. Besides, the net rate of return (NRR) estimated was 37.1%. A positive NRR value indicates that the project is profitable from an economic perspective. Sensitivity analysis indicates that the minimum selling price of hydrogen is affected by the feedstock price, utility cost, tax rate and labor cost. Moreover, feedstock price and labor cost show the greatest effect. Other factors such as land cost, working capital and utility cost showed the least effect on the minimum selling price.
本文提出了一种大豆秸秆催化超临界水气化的概念设计。该设计由预处理、气化、分离、净化和燃烧四个工艺单元组成。基于综合现金流量分析，评估了制氢的经济可行性。经济分析建议氢气的最低销售价格为 1.94 美元/千克。与其他生物质转化工艺相比，氢气的生产成本相对较低。此外，估计的净投资回报率（NRR）为 37.1%。正的 NRR 值表明从经济角度来看，该项目是盈利的。敏感性分析表明，氢气的最低销售价格受原料价格、公用事业成本、税率和劳动力成本的影响。此外，原料价格和劳动力成本对最低销售价格的影响最大。其他因素，如土地成本、营运资金和公用事业成本，对最低销售价格的影响最小。
