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首页> 外文期刊>Journal of pulp and paper science >Using Electrical Resistance Tomography to Image Liquor Flow in a Model Digester
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Using Electrical Resistance Tomography to Image Liquor Flow in a Model Digester

机译：使用电阻层析成像对模型消化器中的液流成像

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摘要

Pulp digesters are large pressurized vessels used to delignify wood chips and produce chemical pulp. Successful operation requires the creation of uniform liquor flow through a packed chip column, particularly for implementation of modern cooking strategies. As digester size has increased to achieve higher production rates, the ability to create uniform liquor flow through the processing zones has been questioned. A number of problems, including accelerated digester corrosion, fluctuations in the degree of delignification and poor washing efficiency, have all been linked In nonuniform liquor flow in the digester. Here, we explore the use of electrical resistance tomography for visualizing liquor flow through a chip column in a geometrically scaled model digester. An eight-plane, sixteen electrodes per plane, sensor array permitted three-dimensional time-resolved reconstruction of the liquor flow through the chip column. The technique was validated by simultaneously imaging a dyed tracer flow in water.
机译：纸浆蒸煮器是用于对木片进行脱木质素并生产化学纸浆的大型加压容器。成功的操作需要通过填充的碎屑柱产生均匀的液体流，特别是对于现代烹饪策略的实施。随着蒸煮器尺寸的增加以实现更高的生产率，人们对通过处理区产生均匀液体流的能力提出了质疑。消化器内液流不均匀导致许多问题，包括消化器腐蚀加快，脱木素度波动和洗涤效率差。在这里，我们探索了使用电阻层析成像技术来可视化通过几何比例模型消化器中芯片柱的液体流动。一个八平面，每平面十六个电极的传感器阵列允许对流经芯片柱的液体进行三维时间分辨重建。通过同时对水中的染色示踪剂流进行成像验证了该技术。

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