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Specific Energy Consumption (SEC) for pipeline transport of liquid CO2 slurries.

机译：用于液体CO2浆液管道输送的比能耗（SEC）。

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摘要

In this study, Specific Energy Consumption (SEC) was used as a basis to optimize the operating conditions (pipe diameter, particle size and solids concentration) for a hypothetical liquid CO2 slurry pipeline, carrying petroleum coke ("pet coke") or sulfur particles. The optimum particle size and solids concentration were found to be 100-150microm and approximately 30% by volume respectively. Calculations of SEC involve prediction of the flowing slurry's frictional pressure gradient, obtained here using the Saskatchewan Research Council's two-layer model. However, the model and some of the correlations it contains have not yet been tested for low carrier fluid viscosities, which is the case for liquid CO2, whose viscosity is one order of magnitude lower than water. To test the applicability of the model's kinematic friction correlation for slurries with low carrier fluid viscosities, a 50 mm (diameter) pipe loop was designed and built to test slurries of pet coke in hot water at 70°C. The performance of the correlation gave a direct indication of the error in the SEC calculations made for liquid CO2 slurries in industrial pipe sizes. In addition to evaluating the performance of the model's kinematic friction correlation for slurries with low carrier fluid viscosities, effort was put to improve the model's Coulombic friction estimation. As Coulombic friction estimation in the model requires knowledge of the coefficient of friction, a simple technique to measure this parameter for various particle-pipe material combinations was proposed.
机译：在这项研究中，以比能耗（SEC）为基础来优化假设的液态CO2浆液管道（携带石油焦（“石油焦”）或硫磺颗粒）的运行条件（管道直径，粒径和固体浓度） 。发现最佳粒径和固体浓度分别为100-150μm和约30体积％。 SEC的计算涉及预测流动浆液的摩擦压力梯度，这是使用萨斯喀彻温省研究委员会的两层模型获得的。但是，该模型及其所包含的一些相关性尚未针对低载流体粘度进行测试，液态CO2的情况就是这样，其粘度比水低一个数量级。为了测试该模型的运动摩擦相关性在低载流体粘度的泥浆中的适用性，设计并构建了一个直径为50 mm（直径）的管环，以在70°C的热水中测试石油焦浆。相关性的性能直接表明了工业管道尺寸的液态CO2浆料在SEC计算中的误差。除了评估载流体粘度低的浆液的模型运动摩擦相关性的性能外，还努力改进了模型的库仑摩擦估计。由于模型中的库仑摩擦估计需要了解摩擦系数，因此提出了一种用于测量各种颗粒-管道材料组合的此参数的简单技术。

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  • 作者

    Hegde, Rajesh.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Chemical.
  • 学位 M.S.
  • 年度 2013
  • 页码 142 p.
  • 总页数 142
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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