Institute of Development of Energy for African Sustainability (IDEAS), University of South Africa, Private Bag X6, Florida, Johannesburg, 1710, South Africa.
School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea; Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Raiwind Road, 54000 Lahore, Pakistan.
Environ Pollut. 2020 Nov;266(Pt 3):115103. doi: 10.1016/j.envpol.2020.115103. Epub 2020 Jun 28.
Biomass integrated gasification combined cycle (IGCC) is attracting increased interest because it can achieve high system energy efficiency (>50%), which is predicted to increase with the increase in the solar share in biomass IGCC. This study evaluated the potential of crop residues numerically for the co-production of power and bio-fertilizer using ASPEN Plus® simulation software. The results showed that the gas yield increases with increasing temperature and decreasing pressure while the yield of bio-fertilizer is dependent on the biomass composition. The biomass with a low ash content produces high bio-fertilizer at the designated gasification temperature. The IGCC configuration conserves more energy than a directly-fired biomass power plant. In addition, the solar-assisted IGCC attains a higher net electricity output per unit of crop residue feed and achieves net thermal efficiencies of around 53%. The use of such hybrid systems offer the potential to produce 0.55 MW of electricity per unit of solar-thermal energy at a relatively low cost. The ASPEN Plus model predicted that the solar biomass-based IGCC set up is more efficient in increasing the power generation capacity than any other conversion system. The results showed that a solar to electricity efficiency of approximately 55% is achievable with potential improvements. This work will contribute for the sustainable bioenergy production as the relationship between energy production and biomass supplies very important to ensure the food security and environmental sustainability.
生物质集成气化联合循环（IGCC）由于其能够实现高系统能源效率（>50%）而引起了越来越多的关注，预计随着生物质 IGCC 中太阳能份额的增加，这一效率还会提高。本研究使用 ASPEN Plus®模拟软件对农作物残余物的联产电力和生物肥料的潜力进行了数值评估。结果表明，气体产量随温度升高和压力降低而增加，而生物肥料的产量取决于生物质的组成。在指定的气化温度下，灰分含量低的生物质会产生高生物肥料。IGCC 配置比直接燃烧生物质发电厂节省更多的能源。此外，太阳能辅助 IGCC 每单位农作物残余物进料的净电量输出更高，实现了约 53%的净热效率。这种混合系统的使用有可能以相对较低的成本，每单位太阳能热能生产 0.55MW 的电力。ASPEN Plus 模型预测，与任何其他转换系统相比，基于太阳能的生物质 IGCC 装置在提高发电能力方面更有效率。结果表明，通过潜在的改进，太阳能到电力的效率约为 55%是可以实现的。这项工作将有助于可持续的生物能源生产，因为能源生产和生物质供应之间的关系对于确保粮食安全和环境可持续性非常重要。
