煤粉炉增钙脱硫粉煤灰Q相-3CaO？3Al2O3？CaSO4系列矿物生成机制研究

项目名称： 煤粉炉增钙脱硫粉煤灰Q相-3CaO？3Al2O3？CaSO4系列矿物生成机制研究

项目编号： No.U1204523

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 工程热物理与能源利用学科

项目作者： 焦有宙

作者单位： 河南农业大学

项目金额： 31万元

中文摘要： 本项目采用实验研究、理论分析和数值计算等方法，进行煤粉炉增钙脱硫粉煤灰Q相-3CaO?3Al2O3?CaSO4系列矿物生成机制研究，阐明增钙脱硫粉煤灰成灰过程Q相矿物与高温脱硫产物3CaO?3Al2O3?CaSO4等矿物的共存条件、共生和竞争机制，确立煤粉炉增钙混合煤粉燃烧灰化超快速生成Q相-3CaO?3Al2O3?CaSO4系列熟料矿物形成化学。揭示增钙混合煤粉粒径级配特征、钙镁基质形式及其与煤中矿物聚合均布程度等物化基础与联产Q相-3CaO?3Al2O3?CaSO4系列矿物生成能力的相关关系，探明煤粉炉温度场、动力场和料气比等热力条件对增钙混合煤粉物料颗粒无机矿物质演变和熟料矿物生成反应的影响规律，建立增钙混合煤粉燃烧灰化超快速生成Q相-3CaO?3Al2O3?CaSO4系列熟料矿物反应的动力学模型。项目研究将为煤粉炉联产水泥熟料理论技术研究和水泥熟料煅烧新工艺提供理论基础。

中文关键词： 煤粉燃烧；增钙；脱硫粉煤灰；Q相；硫铝酸钙

英文摘要： In this project, experiments, theoretical analysis, and numerical calculations will be combined to investigate the formation mechanism of a series of minerals of Q phase and 3CaO?3Al2O3?CaSO4 in the fly ash during the process of calcium-enriching and desulfurization in pulverized coal combusition boiler. The co-existing condition, co-cogeneration and competition mechanism of Q phase mineral and 3CaO?3 Al2O3?CaSO4 system after high-temperature desulfurization will be explained. The mineral formation chemical of calcium-enriched coal fly ash, to ultra-fast form a series of minerals of Q-phase and 3CaO?3Al2O3?CaSO4 in the pulverized coal furnace, will be es tablished. The re lationship among characteristics of size grading of calcium-enriched coal , pattern of calcium and magnesium substrate, its agglomer ation with the minerals in the coal and its homogeneity after mixing and formation capacity of Q-phase and 3CaO?3Al2O3?CaSO4 will be unveil ed. The effect of thermal condition such as temperature field in the pulverized coal furnace, dynamic field, ratio of material and gas on the evolution of calcium-enriched coal fly ash and formation of clinker minerals will be presented. At last, a dynamic model is expect ed to be built to describe the reaction of calcium-enriched coal fly ash to ultra-fast form a series of

英文关键词： pulverized coal combusition；calcium-enriched；desulphurization coal fly ash；quaternary phase；calcium sulphoaluminate