Porous solid amine adsorbents and applications
AssigneeDecarbontek LLC
InventorYong Ding
Life of this patent
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Abstract
Porous solid amine adsorbents are prepared by bringing into contact a first (e.g., dope) solution, including a water insoluble polymer and a water-soluble amine polymer, with an aqueous solution containing a multifunctional chemical agent. The first solution can be obtained by dissolving the water insoluble polymer and the water-soluble amine polymer in a polar solvent. The adsorbents can be in the form of beads, sheets, fibers, hollow fibers, etc. and can be used in the removal of acid gases, CO2, for instance, from fluid streams.
Claims26
A process for removing an acid gas from a fluid stream containing the acid gas, the process comprising:
- contacting the fluid stream with a porous solid amine adsorbent, whereby at least a portion of the acid gas is adsorbed by the porous solid amine adsorbent to produce a purified fluid stream,
- wherein,
- the porous solid amine adsorbent is prepared by a method comprising:
- bringing into contact a first solution, the first solution containing a water insoluble polymer and a water-soluble amine polymer, with an aqueous solution containing a multifunctional chemical agent, to form a solid material;
- drying the solid material to produce the porous solid amine adsorbent;
- and
- optionally heating the porous solid amine adsorbent to produce a heat-treated porous solid amine adsorbent.
A method for preparing a porous solid amine adsorbent, the method comprising:
- bringing into contact a first solution that includes a water insoluble polymer and a water-soluble amine polymer with an aqueous solution containing a multifunctional chemical agent to produce a solid material;
- drying the solid material, to produce the porous solid amine adsorbent;
- and
- optionally heating the porous solid amine adsorbent to produce a heat treated porous solid amine adsorbent.
Dependencies are inferred from the claim text.