Intensification of biocatalytic gas absorption
AssigneeSaipem S.P.A.
InventorsMausam Verma, Louis Fradette, Sylvie Fradette, Sylvain Lefebvre, Vincent Sylvestre-Laurence
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Abstract
Intensification techniques are described for enhancing biocatalytic CO2 absorption operations, and may include the use of a rotating packed bed, a rotating disc reactor, a zig-zag reactor or other reactors that utilize process intensification. Carbonic anhydrase can be deployed in the high intensity reactor free in solution, immobilized with respect to particles that flow with the liquid, and/or immobilized to internals, such as packing, that are fixed within the high intensity reactor.
Claims22
A biocatalytic process for treating a CO2 containing gas, comprising:
- supplying CO2 containing gas into a rotating packed bed (RPB) comprising a reaction chamber;
- supplying an absorption solution into the RPB;
- contacting the CO2 containing gas and the absorption solution within the reaction chamber, in the presence of carbonic anhydrase, under fluid acceleration conditions of at least 50 m/s2 to convert dissolved CO2 into bicarbonate and hydrogen ions and to form a CO2 depleted gas and an ion enriched solution free of bicarbonate precipitates, wherein the carbonic anhydrase is free in the absorption solution in that the carbonic anhydrase is not immobilized on or in particles flowing with the absorption solution and the carbonic anhydrase flows with the absorption solution;
- and
- withdrawing the CO2 depleted gas and an ion enriched solution from the RPB.
A biocatalytic process for treating a CO2 containing gas, comprising:
- supplying CO2 containing gas into a rotating packed bed (RPB) comprising a reaction chamber;
- supplying an absorption solution into the RPB;
- contacting the CO2 containing gas and the absorption solution within the reaction chamber, in the presence of carbonic anhydrase, under fluid acceleration conditions of at least 50 m/s2 to convert dissolved CO2 into bicarbonate and hydrogen ions and to form a CO2 depleted gas and an ion enriched solution free of bicarbonate precipitates,
- wherein the carbonic anhydrase is free in the absorption solution in that the carbonic anhydrase is not immobilized on or in particles flowing with the absorption solution and the carbonic anhydrase flows with the absorption solution;
- and
- withdrawing the CO2 depleted gas and an ion enriched solution from the RPB, wherein the absorption solution comprises a defoamer.
Dependencies are inferred from the claim text.