Modeling of a Heat-Integrated Biomass Downdraft Gasifier with Construction and Demolition Waste as Feedstock

IF 3.8 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2025-06-26 DOI:10.1021/acs.iecr.5c01138

Houda M. Haidar, James W. Butler, Anh-Duong Dieu Vo, Peter Gogolek, Kimberley McAuley

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Abstract

A mathematical model for heat-integrated downdraft gasification of pine wood is extended to account for construction and demolition (C&D) waste as feedstock. Model equations account for a high proportion of inerts in C&D waste compared to pine wood. Statistical subset selection is used to select 11 out of 39 parameters for estimation using 13 experimental runs. Model validation shows improved predictions compared to pine-wood parameters. Simulations reveal that a lower volumetric feed rate of C&D is required to generate the same energy as pine wood, due to its higher density. Using C&D results in lower H₂/CO ratios and more tar in producer gas. An appropriate solid removal rate is crucial for higher-quality producer gas. Reducing the moisture of C&D from 8.1 to 5.0 wt % increases CO and H₂ mole fractions by 4.3 and 3.6%, respectively. Experimental and simulation results confirm that C&D is a promising feedstock for gasification and subsequent electricity generation.

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以建筑垃圾和拆迁垃圾为原料的热集成生物质下吸式气化炉建模

一个数学模型的热集成下降气流气化松木扩展到考虑建筑和拆迁（C&；D）废料作为原料。与松木相比，模型方程在C&；D废物中占了很高的比例。使用统计子集选择，从39个参数中选择11个参数进行估计，使用13个实验运行。模型验证表明，与松木参数相比，预测结果有所改善。模拟表明，由于C&；D的密度更高，因此需要较低的体积进料速率来产生与松木相同的能量。使用C&；D的结果是H2/CO比更低，产气中的焦油更多。适当的固体去除率对于生产高质量的产气至关重要。将C&；D的水分从8.1 wt %降低到5.0 wt %， CO和H2的摩尔分数分别提高4.3%和3.6%。实验和模拟结果证实，C&；D是一种很有前途的气化和后续发电原料。

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.