Adsorption of carbon dioxide from natural gas into caustic and precipitation as calcium carbonate and methods thereof
AssigneeRipcord Energy Solutions, LLC
InventorsLinda Esther Schweitzer, Bobby Burkes, Sr.
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Abstract
Methods of precipitating carbon dioxide stripped from natural gas or a post-combustion source are disclosed herein. The methods include provision of an aqueous spent caustic solution comprising carbon dioxide and adding a source of calcium ions to precipitate calcium carbonate and form a brine solution. The source of calcium ions is primarily calcium chloride and has calcium hydroxide as less than 1% wt/wt of the source of calcium ions. The method can include collecting the calcium carbonate precipitate, washing the calcium carbonate precipitate, and drying the calcium carbonate precipitate.
Claims20
A method of precipitating carbon dioxide stripped from natural gas or a post-combustion source, the method comprising:
- providing an aqueous spent caustic solution comprising carbon dioxide;
- adding calcium chloride and calcium hydroxide to precipitate calcium carbonate and form a brine solution.
Dependencies are inferred from the claim text.