The influence of cake geometry on mechanical gas dewatering and displacement washing of filter cakes is investigated experimentally. For this purpose, five cake geometries are considered. The results show that the dewatering kinetics are independent of cake geometry within the limits of measurement accuracy. Further investigations demonstrate that an inhomogeneous cake geometry negatively influences displacement washing, which can be quantified in a wash diagram. Compared to flat filter cakes used as reference, non-uniform cake heights increase the needed amount of wash liquid to achieve the same cake purity in the dispersion and diffusion regime. This research underlines the importance of ensuring that filter cakes have homogeneous properties to maintain sustainability of industrial filtration processes.

中文翻译：

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不均匀滤饼几何形状滤饼机械脱水及置换洗涤实验研究

通过实验研究了滤饼几何形状对机械气体脱水和滤饼置换洗涤的影响。为此，考虑了五种蛋糕几何形状。结果表明，在测量精度范围内，脱水动力学与滤饼几何形状无关。进一步的研究表明，不均匀的滤饼几何形状会对置换洗涤产生负面影响，这可以在洗涤图中量化。与用作参考的扁平滤饼相比，不均匀的滤饼高度增加了在分散和扩散状态下实现相同滤饼纯度所需的洗涤液量。这项研究强调了确保滤饼具有均匀特性以保持工业过滤过程可持续性的重要性。