公开(公告)号：US11731078B2

公开(公告)日：2023-08-22

申请号：US17525562

申请日：2021-11-12

Applicant: SAIPEM S.P.A.

Inventor： Sylvain Lefebvre ,  Richard Surprenant ,  Ferrere Clerveaux ,  Gabriel Veilleux ,  David Zhang

IPC: B01D51/10 ,  B01D53/14 ,  B01D53/50 ,  B01D53/62 ,  B01D53/96

CPC classification number: B01D53/502 ,  B01D51/10 ,  B01D53/1406 ,  B01D53/1475 ,  B01D53/62 ,  B01D53/96 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/606 ,  B01D2255/804 ,  B01D2258/0283

Abstract: A desulfurization gas process includes water vapor, CO2 and SOx (x=2 and/or 3). In a treatment unit, the gas contacts a cooled alkaline aqueous solution having a temperature lower than an initial gas temperature, water and a carbonate of an alkali metal, to cool the gas, condense some water vapor and absorb SOx in the carbonate-containing solution, produce an SOx-depleted gas and an acidic aqueous solution including sulfate and/or sulfite ions. The SOx-depleted gas and a portion of the acidic aqueous solution can then be withdrawn from the treatment unit. Carbonate of the alkali metal can be added to remaining acidic aqueous solution to obtain a made-up alkaline aqueous solution. This solution can be cooled and reused as the cooled alkaline aqueous solution. An SOx absorbent solution includes a bleed stream from a CO2-capture process, sodium or potassium carbonate, and an acidic aqueous solution obtained from desulfurization.

公开(公告)号：US11202988B2

公开(公告)日：2021-12-21

申请号：US16637217

申请日：2018-08-10

Applicant: SAIPEM S.P.A.

Inventor： Sylvain Lefebvre ,  Richard Surprenant ,  Ferrere Clerveaux ,  Gabriel Veilleux ,  David Zhang

IPC: B01D53/50 ,  B01D53/14 ,  B01D53/62 ,  B01D53/96 ,  B01D51/10

Abstract: A desulfurization gas process includes water vapor, CO2 and SOx (x=2 and/or 3). In a treatment unit, the gas contacts a cooled alkaline aqueous solution having a temperature lower than an initial gas temperature, water and a carbonate of an alkali metal, to cool the gas, condense some water vapor and absorb SOx in the carbonate-containing solution, produce an SOx-depleted gas and an acidic aqueous solution including sulfate and/or sulfite ions. The SOx-depleted gas and a portion of the acidic aqueous solution can then be withdrawn from the treatment unit. Carbonate of the alkali metal can be added to remaining acidic aqueous solution to obtain a made-up alkaline aqueous solution. This solution can be cooled and reused as the cooled alkaline aqueous solution. An SOx absorbent solution includes a bleed stream from a CO2-capture process, sodium or potassium carbonate, and an acidic aqueous solution obtained from desulfurization.

公开(公告)号：US11420159B2

公开(公告)日：2022-08-23

申请号：US15562804

申请日：2016-03-30

Applicant: SAIPEM S.P.A.

Inventor： Mausam Verma ,  Louis Fradette ,  Sylvie Fradette ,  Sylvain Lefebvre ,  Vincent Sylvestre-Laurence

IPC: C12P3/00 ,  B01D53/84 ,  B01D53/62 ,  B01D53/77 ,  B01D53/14 ,  B01D19/04 ,  B01D53/78 ,  B01D53/96

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.