Multiphase flow processes taking place in Carbon Capture Utilization and Storage (CCUS) processes are accompanied by scale deposits which increase operational cost and reduce efficiency of processes. Over the years, the effect of several parameters, including pH, temperature, initial supersaturation ratio, (SR_i), with respect to calcium carbonate phase, the presence of foreign substances and solid substrates etc. on the prevalent mechanisms of scale, was investigated. Scale formation from fluids is in principle heterogeneous and may be affected by surface wettability. In the present work, for the first time, calcium carbonate precipitation was investigated in beds, packed with hydrophilic and hydrophobic of 1.5 mm diameter sphere at SR_i values equal to 537, 222 and 86. Homogeneously hydrophobic and hydrophilic, and fractionally wet beds were tested. Solutions supersaturated with respect to calcium carbonate in the absence and in the presence of n-dodecane were injected into the columns. Except for solutions with SR_i=537, with respect to calcite, where spontaneous precipitation prevailed, in the absence of n-dodecane, precipitation rates and the total mass of calcium carbonate precipitate, for the same time, were lower in the case of hydrophobic beds. In the presence of oil-water interfaces, for similar SR_i values, hydrophobicity resulted in higher total mass of calcium carbonate precipitate, in comparison with the respective precipitated in the hydrophilic beds. Fractional wettability affected fluid flow and the precipitation process. In the absence of n-dodecane, the total calcium at the outflow curve lied in between the corresponding curves of the hydrophobic and the hydrophilic beds. In the presence of oil-water interfaces, fractional wettability resulted in the formation of shells consisting of small calcite crystals surrounding the hydrophobic spheres, while larger crystals were formed on the hydrophilic spheres. This study reveals the importance of pore surface wettability, its homogeneity and distribution on the formation of calcium carbonate scale during the flow of supersaturated solutions with respect to calcite and in the presence of oil/water interfaces created after oil displacement.

碳捕获利用和储存 (CCUS) 过程中发生的多相流过程伴随着水垢，这会增加运营成本并降低过程效率。多年来，研究了几个参数，包括 pH 值、温度、初始过饱和比 (SR _i )、相对于碳酸钙相、外来物质和固体基质的存在等对普遍的结垢机制的影响。 . 流体形成的水垢原则上是不均匀的，可能受表面润湿性的影响。在目前的工作中，首次在床中研究碳酸钙沉淀，在 SR _{i处填充有 1.5 mm 直径的亲水和疏水球体}值等于 537、222 和 86。测试了均匀疏水和亲水以及部分湿床。将在不存在和存在正十二烷的情况下相对于碳酸钙过饱和的溶液注入柱中。除了 SR _i =537 的溶液，对于方解石，自发沉淀占主导地位，在没有正十二烷的情况下，沉淀速率和碳酸钙沉淀的总质量同时在疏水的情况下较低床。在存在油水界面的情况下，对于类似的 SR _i值，与亲水床中的相应沉淀相比，疏水性导致碳酸钙沉淀的总质量更高。分数润湿性影响流体流动和降水过程。在没有正十二烷的情况下，流出曲线处的总钙位于疏水床和亲水床的相应曲线之间。在油水界面存在的情况下，部分润湿性导致形成由围绕疏水球的小方解石晶体组成的壳，而在亲水球上形成较大的晶体。这项研究揭示了孔表面润湿性的重要性，