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Simulation Study of Biomass Gasification

Abstract

生物质气化是生物质利用过程中热效率较高的一种方法,同时也是一种十分重要的可再生能源利用方式。本文采用AspenPlus模拟软件,结合吉布斯自由能最小原理,建立了生物质气化反应器模型,模拟研究了不同操作参数对气化结果的影响,同时对三种气化剂下的气化结果进行了对比分析。 在三种气化剂的模拟结果中,同一操作参数对气化结果的影响有一定共通性:(1)随着气化温度的升高(600~900℃),一氧化碳体积分数升高,二氧化碳和甲烷体积分数降低,但氢气体积分数变化不大;气体的热值升高(700℃以上),气体产率先升高后降低,气化效率略微升高。(2)随着S/B的增大(0.2~1.2),氢气和二氧化碳体积分数升高,...Biomass gasification is considered as one of the most promising technologies because it can convert renewable biomass resources into producer gas. In this study, based on Aspen Plus of process simulation software and the minimization principle of Gibbs free energy, a model for gasifier was developed. The effects of different reaction conditions on gasification performance were studied, and the res...学位:工学硕士院系专业:能源学院_能源化工学号:3242013115229

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