基于甘蔗渣髓的压块生产的技术经济评估和压块给料煤气化-发动机系统的性能分析。
Techno-economic assessment of sugarcane bagasse pith-based briquette production and performance analysis of briquette feed gasifier-engine system.
机构信息
Department of Mechanical Engineering, Indian Institute of Technology (BHU), Varanasi, 221005, India.
Department of Mechanical Engineering, Indian Institute of Technology (BHU), Varanasi, 221005, India.
出版信息
J Environ Manage. 2023 Nov 1;345:118828. doi: 10.1016/j.jenvman.2023.118828. Epub 2023 Aug 16.
Utilizing agriculture co-products and agricultural residues directly leads to Energy, Economic, and Environmental sustainability. Sugar production industries produce a considerable amount of sugarcane bagasse (SB) as a co-product, whereas SB is used in paper-mill sectors, which have a large amount of waste as sugarcane bagasse pith (SBP). In this view, the novelty of the present study aims to ensure the economic viability of the SBP briquette production plant, after that, briquette-based producer gas (PG) generation and application to compression ignition (CI) engine for diesel substitution. The economic analysis includes the Net Present Value (NPV) and Profitability Index (PI) for the feasibility check. And gasifier-engine analysis includes the effect of gasification equivalence ratio (GER), engine compression ratio (CR), and load on engine brake thermal efficiency (BTE), diesel saving, Sound, Exhaust gas temperature (EGT), and emissions (CO, HC, CO, NOx). Further, operating variables were optimized with the desirability approach of Response surface methodology (RSM). In the result, NPV and PI values were found to be Rs 49,64,379.5 (≈0.06 million USD) and 1.98, respectively. However, the economic feasibility of the plant is sensitive to capital cost, briquette market price, and discount percentages. Regarding gasifier-engine performance, the maximum diesel substitution was found to be 66.15% at dual fuel (DF) mode engine run. RSM-based optimization result showed the optimum operating setting of 0.10 GER, 16 CR, and 9.93 kg load at 1500 rpm with a composite desirability of 0.798. Accordingly, at optimal input parameters, the magnitudes of engine performance as BTE, Sound, CO, HC, CO, and NOx were found to be 27.18%, 91.21 db, 0.10%vol., 53.19 ppm, 2.33%vol., and 8.43 ppm respectively. Thus, the higher value of the economic index and substantial amount of diesel fuel saving through the gasifier-engine system ensures the economic feasibility of briquetting and power generation technology.
利用农业副产品和农业残余物直接带来能源、经济和环境的可持续性。制糖产业生产大量的甘蔗渣（SB）作为副产品，而 SB 被用于造纸厂，这些造纸厂有大量的甘蔗渣髓（SBP）废物。在这种情况下，本研究的新颖之处旨在确保 SBP 压块生产厂的经济可行性，然后在此基础上生产基于压块的生产气（PG），并将其应用于压缩点火（CI）发动机以替代柴油。经济分析包括净现值（NPV）和盈利能力指数（PI）以进行可行性检查。气化器-发动机分析包括气化当量比（GER）、发动机压缩比（CR）和负荷对发动机制动热效率（BTE）、柴油节省、噪音、废气温度（EGT）和排放（CO、HC、CO、NOx）的影响。此外，通过响应面法（RSM）的可取性方法对操作变量进行了优化。结果发现，NPV 和 PI 值分别为 Rs 49,64,379.5（≈0.06 百万美元）和 1.98。然而，工厂的经济可行性对资本成本、压块市场价格和折扣百分比敏感。关于气化器-发动机性能，在双燃料（DF）模式发动机运行时，发现最大柴油替代率为 66.15%。基于 RSM 的优化结果显示，在 1500rpm 时，最佳运行设置为 0.10 GER、16 CR 和 9.93kg 负荷，综合可取性为 0.798。因此，在最佳输入参数下，发动机性能的大小，如 BTE、噪音、CO、HC、CO 和 NOx，分别为 27.18%、91.21db、0.10%vol.、53.19ppm、2.33%vol.和 8.43ppm。因此，通过气化器-发动机系统获得更高的经济指标值和大量的柴油燃料节省，确保了压块和发电技术的经济可行性。
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