Biomass Conversion and Biorefinery ( IF 3.5 ) Pub Date : 2022-01-18 , DOI: 10.1007/s13399-021-02156-8 W. Beno Wincy 1 , M. Edwin 2
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The increasing consumption of fossil fuels, along with the impending threat of global warming, has motivated research into renewable and environmentally friendly energy sources. Biomass gasification has been identified as a viable solution for a sustainable drying process. In the present study, a biomass gasifier operated reversible airflow flatbed dryer (BG-RAFD) system has been developed and experimented for drying parboiled paddy. Based on the experimental data, energy, exergy, and exergoeconomic parameters have been investigated. The parboiled paddy of 30 kg has been dried to remove the moisture content from 38.44 to 14% in 6.5 h at the average drying air temperature and drying air velocity of 80 °C and 0.05 m/s, respectively. The average energy utilization (EU) by the parboiled paddy and energy utilization ratio (EUR) of the dryer are found as 0.52 and 22.96%, respectively. The exergy destruction is maximum for the hot air generator (HAG) with 2.570 kW, followed by the biomass gasifier (BG) with 1.584 kW. The exergy efficiency of the BG-RAFD system is found as 21.28%. The maximum exergy efficiency is found in the air duct (AD) and the BG with 76.21% and 70.93%, respectively. Due to the huge purchased equipment cost (PEC), the total exergy cost of BG becomes high at 0.143 $/h. Based on the exergoeconomic factor, it is observed that the most important system component which is needed to improve are BG and gas conditioner (GC). The present study reveals that the BG-RAFD is more efficient when compared with conventional drying systems and it can be recommended in the rice parboiling industries.
Graphical abstract
中文翻译：
生物质气化炉操作稻谷烘干机在蒸谷行业的实验能量、火用和火用经济 (3E) 分析
化石燃料消耗量的增加以及全球变暖的迫在眉睫的威胁，推动了对可再生和环保能源的研究。生物质气化已被确定为可持续干燥过程的可行解决方案。在本研究中，已经开发并试验了一种生物质气化器操作的可逆气流平板干燥机（BG-RAFD）系统来干燥半熟稻谷。根据实验数据，对能量、火用和火用经济参数进行了研究。在平均干燥空气温度和干燥空气速度分别为 80°C 和 0.05 m/s 的情况下，30 kg 的半熟稻谷在 6.5 h 内将水分含量从 38.44% 去除到 14%。半熟稻谷的平均能源利用率 (EU) 和烘干机的能源利用率 (EUR) 分别为 0.52% 和 22.96%。热空气发生器 (HAG) 的火用破坏最大，功率为 2.570 kW，其次是生物质气化炉 (BG)，功率为 1.584 kW。BG-RAFD 系统的火用效率为 21.28%。在风道 (AD) 和 BG 中发现最大火用效率分别为 76.21% 和 70.93%。由于巨大的采购设备成本（PEC），BG 的总火用成本高达 0.143 美元/小时。基于 exergoeconomic 因素，观察到需要改进的最重要的系统组件是 BG 和气体调节器 (GC)。
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