Economic assessment of acetaldehyde production from oxidative dehydrogenation of bioethanol through chemical looping air separation

IF 7.1 2区工程技术 Q1 ENERGY & FUELS Sustainable Energy Technologies and Assessments Pub Date : 2024-09-14 DOI:10.1016/j.seta.2024.103967

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Abstract

The conventional bioethanol oxidative dehydrogenation to acetaldehyde suffers from low energy efficiency and high capital cost due to cryogenic air separation’s high energy consumption and high capital investment. A novel bioethanol oxidative dehydrogenation to acetaldehyde system through chemical looping air separation is established and analyzed in this paper. According to the prediction results, energy efficiency as well as techno-economic performance for the system are studied. It demonstrates that the whole energy efficiency of the system is 55.91 %. Moreover, the acetaldehyde production cost is $877/tonne with bioethanol price $0.43/L. For the acetaldehyde production scale of 10⁶ tonnes/year, the payback period is 2.40 years. Compared with other acetaldehyde production technologies, the system is competitive in terms of acetaldehyde production cost. Additionally, sensitivity analysis for influence factors is carried out. The price of bioethanol has the greatest impact on acetaldehyde production cost, while the price of water is the minimum influence factor.

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通过化学循环空气分离法氧化脱氢生物乙醇生产乙醛的经济评估

由于低温空气分离能耗高、投资大，传统的生物乙醇氧化脱氢制乙醛存在能效低、成本高的问题。本文建立并分析了通过化学循环空气分离的新型生物乙醇氧化脱氢制乙醛系统。根据预测结果，研究了该系统的能源效率和技术经济性能。结果表明，该系统的整体能效为 55.91%。此外，在生物乙醇价格为 0.43 美元/升的情况下，乙醛生产成本为 877 美元/吨。乙醛生产规模为 106 吨/年，投资回收期为 2.40 年。与其他乙醛生产技术相比，该系统在乙醛生产成本方面具有竞争力。此外，还对影响因素进行了敏感性分析。生物乙醇的价格对乙醛生产成本的影响最大，而水的价格是最小的影响因素。

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.