利用Aspen Plus进行生物质气化合成气和制氢的性能研究

Sahar Safarian, Runar Unnthorsson, Christiaan Richter
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引用次数: 4

摘要

本研究提出了一个可靠的模型,使用Aspen Plus过程模拟器,能够对与制氢装置相关的下行气流气化进行灵敏度分析。探讨了气化温度和蒸汽生物质比等关键因素对合成气组成、热值和产氢量的影响,并得出了最大产氢量的最佳工艺条件。通过实验和其他建模数据验证了该模型的正确性。仅用空气作气化剂时的敏感性分析结果表明,温度越高,产物气的氢含量和热值越高。此外,与使用空气作为气化剂相比,蒸汽作为气化剂的消耗导致合成气的氢含量和热值增加。结果表明,木屑下风气化产氢量最高的最佳条件为:气化炉温度为800℃,SBR温度为0.6℃。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance Investigation of Biomass Gasification for Syngas and Hydrogen Production Using Aspen Plus
This study presents a reliable model using Aspen Plus process simulator capable of performing a sensitivity analysis of the downdraft gasification linked to hydrogen production unit. Effects of key factors, including gasification temperature and steam to biomass ratio (SBR) on the syngas composition, calorific value of syngas and hydrogen production are discussed and then the optimal conditions for maximum hydrogen production are extracted. The model is validated by experimental and other modeling data and found to be in great agreement. The sensitivity analysis results obtained by only using air as gasification agent indicate that higher temperatures are favorable for a product gas with higher hydrogen content and calorific value. Moreover, steam consumption as gasifying agent leads to increasing the hydrogen content and heating value of the syngas compared to the use of air as gasification agent. Finally, the results show that the optimal conditions to have the highest value of hydrogen output from sawdust downdraft gasification are 800 ̊C as gasifier temperature and 0.6 for SBR.
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