CARBON DIOXIDE SEQUESTRATION INVOLVING TWO-SALT-BASED THERMOLYTIC PROCESSES

摘要

The present invention relates to an energy efficient carbon dioxide sequestration processes whereby calcium silicate minerals and CO2 are converted into limestone and sand using a two-salt thermolytic process that allows for the cycling of heat and chemicals from one step to another. In one embodiment, MgCI2 is reacted with water under conditions to form Mg(OH)2; and the Mg(OH)2 product is furthe reacted with CaCI2 and carbon dioxide to form MgCI2, CaCO3, and water.