| 周金波,张宗见,刘行易,刘守信.生物质替代燃料低温干燥动力学研究*[J].水泥工程,2025,38(3):11-13 |
| 生物质替代燃料低温干燥动力学研究* |
| Study on low-temperature drying kinetics of biomass alternative fuels* |
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| DOI： |
| 中文关键词: 穿流气流干燥 生物质替代燃料 低温余热利用 干燥动力学 |
| 英文关键词: flow-through drying biomass alternative fuel low-temperature waste heat utilization drying kinetics |
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| 中文摘要: |
| 生物质替代燃料低温干燥是水泥行业节能降碳的重要技术。本文通过理论分析，研究了生物质物料在干燥过程中水分子的析出和吸收机理，根据对流传质及热平衡计算建立了生物质替代燃料穿流气流干燥理论模型。结果表明，干燥条件系数与穿流气流的热力学特性相关，提高穿流气流温度，可有效提高干燥速率；穿流风速和物料厚度对干燥速率的影响呈竞争关系，即存在一组穿流风速和物料厚度，物料干燥速率最大。本文研究建立的穿流气流干燥动力学模型指出了各种因素对干燥速率的定量影响，并与生物质替代燃料干燥实验结果相吻合，对生物质替代燃料烘干装置的开发具有重要的理论指导作用和应用价值。 |
| 英文摘要: |
| Low temperature drying of biomass as a substitute for fuel is an important technology for energy conservation and carbon reduction in the cement industry. This article conducts theoretical analysis to study the precipitation and absorption mechanism of water molecules in biomass materials during the drying process. Based on convective mass transfer and thermal equilibrium calculations, a theoretical model for biomass alternative fuel flow-through drying is established. The results indicate that the drying condition coefficient is related to the thermodynamic characteristics of the flowing airflow, and increasing the temperature of the flowing airflow can effectively improve the drying rate; The influence of flow velocity and material thickness on drying rate is in a competitive relationship, that is, there exists a set of flow velocity and material thickness, and the material drying rate is the highest. The dynamic model of cross flow airflow drying established in this article points out the quantitative influence of various factors on drying rate, and is consistent with the experimental results of biomass alternative fuel drying. It has important theoretical guidance and application value for the development of biomass alternative fuel drying devices. |
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