Replacement of Metallurgical Coke with Bio-Coke from Coconut Shells

IF 5.3 3区工程技术 Q2 ENERGY & FUELS

Energy & Fuels Pub Date : 2025-09-09 DOI:10.1021/acs.energyfuels.5c02366

Elias Ricardo Durango Padilla*, Fabio Minoru Yamaji, Carlos Manuel Romero Luna, Cristiane Inácio de Campos and Carmen Barriocanal,

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Abstract

A comparison was made between the properties of bio-coke (BIC) obtained from briquetted coconut shell biochar and metallurgical coke. The aim was to explore the possibility of using BIC or its blends with metallurgical coke as a potential reducing agent in blast furnaces (BFs). Coconut shells were pyrolyzed at different temperatures (between 200 and 450 °C) to produce biochar. Effects of briquetting temperature (150, 250, and 350 °C) on the mechanical properties of the BIC produced were also studied. The physicochemical characteristics and mechanical strength of the materials have been reported. Reactivity was studied using thermogravimetric analysis and the ECE-INCAR method to determine the effect of BIC addition on metallurgical coke. The mechanical strength of the BIC was lower than that of the metallurgical coke, whereas the reactivity was higher. The results suggested that BIC cannot be used as a total replacement for coal-coke in a BF. Nevertheless, the blend with 5 wt % BIC showed potential as an alternative to reduce the usage of coal-coke.

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用椰壳生物焦替代冶金焦

对椰壳生物炭压块制得的生物焦与冶金焦的性能进行了比较。目的是探索在高炉（BFs）中使用BIC或其与冶金焦的混合物作为潜在还原剂的可能性。椰子壳在不同的温度下（200至450°C）被热解以产生生物炭。研究了成型温度（150,250和350℃）对所制BIC的力学性能的影响。报道了材料的物理化学特性和机械强度。采用热重分析和电子电子衍射（ECE-INCAR）法研究了焦炭的反应性，以确定BIC的加入对焦炭的影响。BIC的机械强度低于冶金焦，而反应性较高。结果表明，BIC不能作为高炉中煤焦的完全替代品。尽管如此，含有5 wt % BIC的混合物显示出作为减少煤焦使用的替代方案的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy & Fuels 工程技术-工程：化工

CiteScore

9.20

自引率

13.20%

发文量

1101

审稿时长

2.1 months

期刊介绍： Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.