Measurement and modeling on local ash layer induced combustion temperature heterogeneity of single coal/biomass particle

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-03-20 DOI:10.1016/j.cej.2025.161708

Haigang Zhang, Zhongjie Shen, Junjie Liu, Guinan He, Ming Liu, Haifeng Liu, Chi-Hwa Wang

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引用次数: 0

Abstract

The in-situ measurement experiments of single coal/biomass particle combustion were conducted on a high-resolution micro-infrared online visualization system, with heterogenetic temperature distribution modification and modeling. Morphology and combustion characteristics of coal and biomass single particles were comparatively analyzed, and the evolution pattern and surface temperature were obtained. Results showed that coal particles performed two-stage shrinking processes and progressive temperature distribution, while the biomass particles showed a one-stage shrinking process and random temperature distribution during combustion. The instantaneous heat release capacity of biomass is comparable to that of coal. Biomass particles had lower combustion temperature on the surface than coal particles, with a difference of 33 °C. For coal particles, the calculated carbon core temperature was significantly higher than the measurements (>200 °C) and decreased with increasing temperature and decreasing ash layer thickness. This model facilitated the quantitative assessment of heat transfer retardation effects induced by ash layer formation.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.