Desiccant composition for supercritical CO.sub.2
AssigneeShell Oil Company
InventorsGeorge C. Blytas, Zaida Diaz
Life of this patent
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Abstract
Supercritical CO.sub.2 is dried by use of a desiccant composition comprising glycerine and bis-hydroxymethyl dioxane, especially a by-product composition recovered from an effluent stream from the production of epoxy resins.
Claims6
A process for reducing the moisture content of substantially supercritical moist carbon dioxide which comprises contacting moist carbon dioxide at substantially supercritical conditions of temperature and pressure of from 70.degree. F. to 150.degree. F. and 1071 psia to 2400 psia with a desiccant composition comprising glycerine containing 5%w to about 20% by weight of at least one bis-hydroxymethyl dioxane based on the total weight of the composition and recovering substantially supercritical carbon dioxide having reduced moisture content.
A process for the reduction of desiccant loss in the drying of moist substantially supercritical carbon dioxide which comprises contacting the moist substantially supercritical carbon dioxide at substantially supercritical conditions of from 70.degree. F. to 150.degree. F. and 1071 psia to 2400 psia with a desiccant composition comprising glycerine containing 5%w to about 20% weight of bis-hydroxymethyl dioxane based on the total weight of the composition and recovering substantially supercritical carbon dioxide having reduced moisture content.
Dependencies are inferred from the claim text.