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高固含量黑液流变学研究进展 |
Research Progress in Rheology of High Solid Content Black Liquor |
收稿日期:2022-06-10 |
DOI:DOI:10.11980/j.issn.0254-508X.2022.12.015 |
关键词: 高固含量黑液 黏度 黏弹性 流变学特性 流变模型 |
Key Words:high solid content black liquor viscosity viscoelasticity rheological properties rheological models |
基金项目:国家自然科学基金面上项目(21978161);陕西科技大学学术带头人团队项目(2013XSD25)。 |
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摘要:本文阐述了高固含量黑液的流变学特性,包括黏度、剪切稀化特性、触变性和黏弹性;介绍了影响高固含量黑液流变学特性的因素,包括有机物占比及有机物长链结构、固含量、温度、pH值及硅干扰等;总结了高固含量黑液流变学特性表征技术及其流变学特性拟合模型。高固含量黑液流变特性影响炉前压力槽泵送、管道输送及喷嘴雾化,全面掌握高固含量黑液流变特性的影响因素和变化规律,对黑液碱回收系统的优化和改进具有重要的指导意义。 |
Abstract:The rheological properties of high solid content black liquor, including viscosity, shear thinning property, thixotropy and viscoelasticity, were descripted in this paper; the factors affecting the rheological properties of high solid content black liquor, including the ratio and long-chain structure of organics, solid content, temperature, pH value and silicon interference, were also introduced; the rheological properties characterization techniques of high solid content black liquor and its rheological property fitting models were summarized. The rheological properties of high solid content black liquor affected the pre-furnace pressure tank pumping, pipeline conveying and nozzle atomization. Therefore, it was necessary to comprehensive grasp the influencing factors and change laws of the rheological properties of high solid content black liquor for the optimization and improvement of the black liquor alkali recovery system. |
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