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

工业规模炉中生物质与煤混烧的计算研究：生物质/煤比例对火焰稳定性和热通量分布的影响

• 批准号: 484595-2015
• 负责人: Nikrityuk, Petr
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=584415
• 关键词: Computational; study; co; firing; biomass

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

本研究项目的主要目标是对生物质与生物质的共烧进行计算研究。 在工业规模的炉子里用来发电的煤。将特别注意调查 生物质/煤比例对火焰稳定性和热流分布的可能影响。 使用煤粉燃烧发电的问题之一是碳排放 二氧化碳，这仍然是一个重大的环境问题，因为气候的影响。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重要选择。 由于生物质的可持续性，减少了气体排放。一般来说，少量的生物质共烧不 不需要对现有的使用粉煤（PC）的燃烧器和锅炉系统进行重大修改。 然而，为了优化PC锅炉和燃烧器的工作参数和效率， 计算最大生物质/煤比，允许使用现有的燃烧器， 修改，这可能会导致额外的费用。这种计算可以使用Computational 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数值模拟 由Capital Power Corporation提供。参数运行，以研究生物质掺混比对 锅炉的火焰特性和总传热平衡。 2.工业规模生物质/煤最佳配比的估算 由工业合作伙伴（Capital Power Corporation）运营，无需对熔炉进行重大改造。 该项目中获得的数据将大大有助于工业合作伙伴（资本力量