Techno-economic assessment of a dual-fluidized-bed system for biomass gasification driven by concentrated solar energy

Xiaoxia Yang, Md. Un Nazmus Sakib Khan, Dian Zhong, Kuo Zeng, Haiping Yang and Hanping Chen

Energy, 2025, vol. 326, issue C

Abstract: Solar gasification of biomass enhances biomass conversion for synthetic fuel production, while intermittency is addressed using a solar dual fluidized bed system. This work aims to technically and economically assess the implementation and viability of the proposed 50 MWth gasification plant. For the best-case scenario of Lhasa in China under solar multiple 2.5, optimized TES of 16 h is obtained from further evaluation and around 19 % of the total annually produced char is enough to meet the rest of heat demand. The levelized cost of fuel production is 9328.97 CNY/ton. The project demonstrated economic viability with a payback period of 9.94 years and positive net present value of 1523.078 × 106 CNY and an internal rate of return of 11.642 % surpassing the discount rate of 5 %. Further sensitivity analysis shows char value and production capacity have most impact economic performance followed by capital investment, tax and biomass cost.

Keywords: Solar energy; Gasification; Biomass utilization; Dual-fluidized bed reactor; Char (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:326:y:2025:i:c:s0360544225017505

DOI: 10.1016/j.energy.2025.136108

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