Computational study on co-firing of biomass with coal in an industrial scale furnace: Effect of biomass/coal ratio on flame stability and heat flux distribution

这一研究项目的主要目的在于对生物质与天然气混合燃烧的计算研究。 用于发电的工业规模熔炉中的煤。将特别注意调查 生物质/煤比对火焰稳定性和热流密度分布的可能影响。 煤粉燃烧用于发电的问题之一是碳排放。 由于气候影响，二氧化碳仍然是一个严重的环境问题。在这方面， 利用生物质作为共燃燃料已被证明是缓解温室效应的一个重要选择。 由于生物质的可持续性质而产生的气体排放。通常情况下，少量生物质联合燃烧可以 不需要对使用煤粉(PC)的现有燃烧器和锅炉系统进行重大改造。 然而，为了优化PC锅炉和燃烧器的工作参数和效率，有必要 计算允许使用现有燃烧器的最大生物质/煤比，而不显著 修改，这可能会导致额外的成本。这样的计算可以使用计算 流体动力学(CFD)模型和软件。拟议的研究侧重于以下目标： 1.基于CFD的生物质与煤粉混烧工业炉膛数值模拟 由Capital Power Corporation使用。参数运行，以研究生物质掺混比对生物量的影响 锅炉的火焰行为和整体传热平衡。 2.可用于工业炉膛的生物质/煤最佳掺混比的估算 由工业合作伙伴(首都电力公司)运营，无需对炉子进行重大改造。 在这个项目中获得的数据将对行业合作伙伴(Capital Power)做出重大贡献

The main objective of this research project consists in a computational study on the co-firing of biomass with coal in an industrial-scale furnace used for power generation. Particular attention will be paid to investigating the possible effect of the biomass/coal ratio on flame stability and heat flux distribution. One of the issues in the use of pulverized coal (PC) firing for electricity production is the emission of carbon dioxide, which remains a significant environmental problem because of climate effects. In this regard, the utilization of biomass as a co-fired fuel has proved to be a significant option for the mitigation of greenhouse gas emissions due to the sustainable nature of biomass. Generally, a small amount of biomass co-firing does not require significant modifications to existing burners and boiler systems using pulverized coal (PC). However, to optimize the working parameters and efficiency of PC boilers and burners it is necessary to calculate the maximum biomass/coal ratio allowing existing burners to be used without significant modifications, which may cause additional costs. Such calculations can be carried out using Computational Fluid Dynamics (CFD) models and software. The proposed research focuses on the following aims: 1. CFD-based numerical simulations of biomass co-firing with pulverized coal in an industrial-scale furnace used by Capital Power Corporation. Parametric runs to study the influence of the biomass-blending ratio on the flame behavior and overall heat transfer balance of the boiler. 2. Estimation of optimum blending ratio for biomass/coal that can be used in an industrial-scale furnace operated by an industrial partner (Capital Power Corporation) without significant furnace modifications. The data gained in this project will contribute significantly to the industrial partner's (Capital Power