V Nivash, D Sakthivadivel, Alaswad A, V S Vigneshwaran
School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 632014, India.
Engineering for Sustainable Development Centre, College of Engineering and Physical Sciences, Aston University, United Kingdom.
Heliyon. 2024 Mar 14;10(6):e27673. doi: 10.1016/j.heliyon.2024.e27673. eCollection 2024 Mar 30.
This research work deals with the examination of the techno-economic, exergy, and energy analyses of biomass gasification of the invasive weed (PHP) using Steam - Carbon dioxide (CO) as a gasifying agent with the support of simulation modeling for sustainable energy conversion process. The aim of this work is to simulate the gasification process through consideration of the impacts of various operating factors on gasification. This study attains the gradual increase in hydrogen (H) concentration from 51% to 63% along with the rise in carbon monoxide (CO) from 14.5% to 19% using Aspen Plus simulation. CO falls concurrently from 24% to 13.5%. The findings demonstrate significant advancements over earlier studies in terms of both gas composition and overall system performance. A computational model has been developed for the estimation of energy performance indicators such as total energy input, and energy consumed per mass of biomass gasified, which are used in the determination of the system's energy efficiency. The exergy analysis of the system is performed to assess the system's total losses in terms of efficiency gathered from the system's exergy ratios. The economic analysis evaluates the system's economies of scale by gas production at ₹.15/kg and long-term sustainability. The proposed system has been found with the potential to produce a high yield of alternative energy from PHP with increased economic efficiency and lower environmental impact.
本研究工作涉及对入侵杂草（PHP）的生物质气化进行技术经济、火用和能量分析，以蒸汽 - 二氧化碳（CO）作为气化剂，并借助模拟建模来支持可持续能源转换过程。这项工作的目的是通过考虑各种运行因素对气化的影响来模拟气化过程。本研究使用Aspen Plus模拟得出，随着一氧化碳（CO）从14.5%上升到19%，氢气（H）浓度从51%逐渐增加到63%。同时，二氧化碳从24%下降到13.5%。研究结果表明，在气体成分和整体系统性能方面，相较于早期研究有显著进步。已开发出一个计算模型，用于估算能源性能指标，如总能量输入以及每气化单位质量生物质所消耗的能量，这些指标用于确定系统的能源效率。对该系统进行火用分析，以根据从系统火用比收集到的效率来评估系统的总损失。经济分析通过按每千克15卢比的产气成本评估系统的规模经济效益和长期可持续性。已发现所提出的系统有潜力从PHP中高产替代能源，提高经济效率并降低环境影响。
