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US 5,376,614 AGranted
Regenerable supported amine-polyol sorbent
AssigneeUnited Technologies Corporation
InventorsPhilip J. Birbara, Timothy A. Nalette
Life of this patent
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Abstract
The supported amine-polyol sorbent of the present invention comprises about 1 wt % to about 25 wt % amine, about 1 wt % to about 25 wt % polyol, with the balance being support. This sorbent is capable of absorbing and desorbing carbon dioxide at relatively high rates at ambient temperatures, thereby improving carbon dioxide sorption capacity.
Claims5
A supported amine-polyol sorbent, comprising based on the total weight of the sorbent:
- an amine/polyol mixture including from about 1 wt % to about 25 wt % amine for absorbing and desorbing carbon dioxide and water from a gaseous stream, wherein said amine is a polymer having a molecular weight greater than 500, and from about 1 wt % to about 25 wt % polyol for lowering the viscosity of the amine, enhancing carbon dioxide and water migration to the amine, and inhibiting oxidation of the amine, and
- the remainder of the sorbent being a porous support for providing structural integrity to the amine/polyol mixture, said porous support having surface characteristics which adhere the amine to the support and is selected from the group consisting of ion exchange resins and polymeric absorbent resins.
Dependencies are inferred from the claim text.