CO2 sequestration in a radial Hele-Shaw cell via an interfacial chemical reaction.
CO2 sequestration in a radial Hele-Shaw cell via an interfacial chemical reaction.
复制标题
通过界面化学反应在径向 Hele-Shaw 池中封存二氧化碳。
作者：
A. White;T. Ward
本文介绍了在径向Hele-Shaw池中用CO（2）气体置换有限体积Ca（OH）（2）水溶液的实验数据。已知该化学反应沿气-液界面沿着生成CaCO（3）沉淀，并且我们试图理解反应过程对流体驱替的影响。将反应性实验与非反应性实验进行比较，以确定两者之间在参数范围内是否存在任何可测量的差异：CO（2）压力（以表压测量的大气压的1%-10%），液体体积（50或70 μl）和Ca（OH）（2）浓度（0，10或20 mM）。通过测量驱替流体面积A（气体）和总流体面积A（总）来进行分析，以确定用于区分实验的几个量（气体膨胀率、准平衡膜速率和值以及指进不稳定性的存在）。一般来说，化学反应对大多数测量量的影响很小。
In this manuscript, experimental data for the displacement of a finite volume of aqueous Ca(OH)(2) using CO(2) gas in a radial Hele-Shaw cell will be presented. This chemical reaction is known to generate CaCO(3) precipitate along the gas-liquid interface and we seek to understand the influence of the reactive process on fluid displacement. The reactive experiment is compared with the non-reactive case to determine if there are any measurable differences between the two in the range of parameters: CO(2) pressures (1%-10% of an atmosphere measured in gage pressure), liquid volumes (either 50 or 70 μl), and Ca(OH)(2) concentrations (0, 10, or 20 mM) studied. Analysis is performed by measuring the displacing fluid area A(gas) and total fluid area A(tot) to determine several quantities (gas expansion rate, quasi-equilibrium film rate and value, and presence of fingering instability) used to distinguish the experiments. In general there appears to be little effect of the chemical reaction on most of the measured quantities.