Impact of the type of particle boards on the nitrogen fate during their pyrolysis and combustion

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology Pub Date : 2025-08-28 DOI:10.1016/j.fuproc.2025.108316

Thomas Bertus , Jérôme Lémonon , F. Javier Escudero Sanz , Sylvain Salvador

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Abstract

Particle boards, wastes made out of wood particles bonded with nitrogen-rich adhesives, produce high NOx emissions during combustion, requiring control in biomass grate furnaces. However, the diversity of particle board feedstocks has often been overlooked, and the specific effects of different types have not been studied, despite accounting for over 10 % of the total volume.

This work analyzes nitrogen behavior during combustion of standard, moisture-resistant, and fire-retardant particle boards. The combustion process was investigated as a whole, but also by proceeding separately to pyrolysis and char oxidation experiments. Thermogravimetric analysis and experiments conducted in a cross-fired fixed bed reactor were performed under both air and inert (N2) atmospheres. The nitrogen content in various combustion products (incondensable gases, condensates, and residual solids) was quantified to assess the impact of chemical treatments on nitrogen fate.

Results showed that standard and moisture-resistant particle boards showed comparable combustion behaviors. Notable differences emerged during the combustion of fire-retardant particle boards, likely due to the influence of fire-retardant agents. In these cases, a slower heating rate within the bed and reduced hydrogen cyanide (HCN) emissions were observed compared to the other two types. Across all experiments, most of the nitrogen released was found in condensates

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刨花板类型对其热解和燃烧过程中氮命运的影响

刨花板是由木材颗粒与富氮粘合剂粘合而成的废物，在燃烧过程中产生大量的氮氧化物排放，需要在生物质炉排炉中进行控制。然而，刨花板原料的多样性经常被忽视，尽管占总量的10%以上，但不同类型的具体效果尚未得到研究。本文分析了标准、防潮和阻燃刨花板燃烧过程中氮的行为。燃烧过程作为一个整体进行了研究，但也分别进行了热解和炭氧化实验。在空气和惰性（N2）气氛下，在交叉燃烧固定床反应器中进行了热重分析和实验。对各种燃烧产物（不凝性气体、冷凝物和残余固体）中的氮含量进行了量化，以评估化学处理对氮命运的影响。结果表明，标准刨花板和防潮刨花板的燃烧性能相当。阻燃刨花板在燃烧过程中出现了明显的差异，这可能是由于阻燃剂的影响。在这些情况下，与其他两种类型相比，观察到床层内加热速率较慢，氰化氢（HCN）排放量减少。在所有的实验中，大多数释放的氮都是在凝析油中发现的

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

Fuel Processing Technology 工程技术-工程：化工

CiteScore

13.20

自引率

9.30%

发文量

398

审稿时长

26 days

期刊介绍： Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.