Techno-Economic Analysis of a Straw-Based Biorefinery System for Power, Heat, Pellet and Bioethanol Production
(English)In: Energy, ISSN 0360-5442Article in journal (Refereed) Submitted
Abstract: Bioethanol is considered an alternative to fossil fuels in the transportation sector. The use of pellets for heating is another efficient way to mitigate greenhouse gas emissions. This paper evaluates the techno-economic performance of a biorefinery system in which an existing combined heat and power plant integrates with the productions of bioethanol and pellets using straw as feedstock. A two-stage acid hydrolysis process for bioethanol production is used, and two different drying technologies are chosen for drying hydrolysis solid residues. A sensitivity analysis on critical parameters, such as the bioethanol selling price and feedstock price, is performed. The bioethanol production cost is also calculated for two cases at the conditions of ten-year and five-year payback time. The results show that the first case is a more feasible economic configuration at present, having an over 30% production cost reduction compared with the conventional cogeneration plants of bioethanol and solid fuel.
combined heat and power, pellet, biorefinery, drying, bioethanol, straw.
Engineering and Technology
Research subject Biotechnology/Chemical Engineering
IdentifiersURN: urn:nbn:se:mdh:diva-13187OAI: oai:DiVA.org:mdh-13187DiVA: diva2:451936