Optimization of a biomass briquette fuel system based on grey relational analysis and analytic hierarchy process: A study using cornstalks in China
Optimization of a biomass briquette fuel system based on grey relational analysis and analytic hierarchy process: A study using cornstalks in China
复制标题
基于灰色关联分析和层次分析法的生物质成型燃料系统优化：以中国玉米秸秆为原料的研究
DOI：
10.1016/j.apenergy.2015.04.079
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发表时间：
2015-11-01
期刊：
影响因子：
11.2
通讯作者：
Yang, Shuhua
中科院分区：
文献类型：
--
作者：
Wang, Zhiwei;Lei, Tingzhou;Yang, Shuhua
利用技术将农业秸秆等生物质转化为生物质燃料，扩大生物质的应用范围，提高生物质的利用效率。燃料系统中所需的主要机器，如用于干燥、切碎、压块和冷却的机器，已经变得更有效率。然而，生物质成型燃料系统需要专用的机器来达到高的特性指标，并且系统中的所有单元必须匹配和组合以产生满足诸如经济性、环保性、稳定性和大规模操作等多个目标的最佳系统。根据灰色关联分析和层次分析法的理论，建立了综合评价的数学模型。利用该模型，从经济性、清洁环保性、生产能力、产品质量、生产稳定性等多个层次，沿着投资、含尘量、干燥能力、干燥率、机器维修周期等20个指标，对生物质燃料系统方案进行了优选。使用敏感性分析对影响每个层次结构的最重要因素进行了分析。应用灰色关联分析和层次分析法，对我国2 × 10（4）t/a玉米秸秆生物质燃料生产装置进行了方案优选。最优方案为6台2 t/h成型机+3台5 t/h切碎机+6台2 t/h烘干机+1台12 t/h冷却机。客观地选取了评价指标和权重系数，提高了所选BBF系统方案的综合技术性能。研究结果可为大型BBF系统的方案选择和运行提供参考。(C)2015爱思唯尔有限公司版权所有。
Biomass, such as agricultural straw, can be converted into briquette fuel using technology to expand the possible applications of biomass and improve biomass utilization efficiency. The major machines required in a briquette fuel system, such as those used for drying, chopping, briquetting, and cooling, have become more efficient. However, a biomass briquetting fuel system requires special machines to reach a high character index, and all units in the system must match and be combined to produce an optimum system that satisfies multiple objectives, such as economy, environmental protection, stability, and large-scale operation. In this paper, a mathematical model for a synthesized evaluation was established according to theories of grey relational analysis (GRA) and the analytic hierarchy process (AHP). This model was used to select a biomass briquette fuel (BBF) system scheme considering hierarchies of economy, cleanliness and environmental protection, production capacity, product quality, and production stability, along with 20 other indices, including capital investment, dust content, drying capability, briquette rate, and the machine repair cycle. The most significant factors influencing each hierarchy were analyzed using a sensitivity analysis. Based on the GRA and AHP theories, an optimal scheme was selected for a fully operational 2 x 10(4) t/a cornstalk briquette fuel plant in China. The optimum scheme included six sets of briquetting machines with a capacity of 2 t/h + three sets of chopping machines with a capacity of 5 t/h + six sets of drying machines with a capability of 2 t/h + 1 set of cooling machines with a capacity of 12 t/h. The evaluated indices and weight coefficients were chosen objectively, and the comprehensive and technical performances of the selected BBF system scheme improved. These results provide a reference for the scheme selection and operation of large-scale BBF systems. (C) 2015 Elsevier Ltd. All rights reserved.