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CO_2 sequestration with brine solution and fly ashes

机译:用盐溶液和粉煤灰隔离CO_2

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摘要

A conceptual multi-step process demonstrates the feasibility of CO_2 sequestration in an integrated operation utilizing by products primarily obtained from fossil fuel combustion (fly ash) and oil and gas production (brine). This process includes a carbonation reaction utilizing a brine solution and CO_2 as reactants under mild reaction conditions. CaO rich fly ashes are added to increase the pH level of the reactant brine, maximizing the reaction efficiency of the carbonation reaction. Furthermore, these materials can also provide a source of Ca in addition to the Ca present in the brine for carbonation. The calcium from fly ashes and brine both contribute to the formation of calcium carbonate during the carbonation reaction.
机译:一个概念性的多步骤过程证明了在整合操作中利用主要来自化石燃料燃烧(粉煤灰)和油气生产(盐水)的副产品进行CO_2封存的可行性。该过程包括在温和的反应条件下利用盐水溶液和CO_2作为反应物的碳酸化反应。添加富含CaO的粉煤灰以提高反应物盐水的pH值,从而最大化碳酸化反应的反应效率。此外,除了存在于碳酸中的盐水中的钙之外,这些材料还可以提供钙的来源。飞灰和盐水中的钙都有助于碳酸化反应过程中碳酸钙的形成。

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