US 12,330,096 B2
Process for separating molecules from a mixture of fluids comprising at least one fluorinated component
Patrick Van Der Kelen, Sint-Niklaas (BE); Christophe Dehon, Bry sur Marne (FR); and Chien Bin Soo, Kaohsiung (TW)
Assigned to DEHON SAS, Paris (FR)
Appl. No. 18/030,939
Filed by DEHON SAS, Paris (FR)
PCT Filed Sep. 28, 2021, PCT No. PCT/EP2021/076716
§ 371(c)(1), (2) Date Apr. 7, 2023,
PCT Pub. No. WO2022/078755, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2010422 (FR), filed on Oct. 12, 2020.
Prior Publication US 2023/0415066 A1, Dec. 28, 2023
Int. Cl. B01D 3/36 (2006.01); B01D 3/40 (2006.01); B01D 3/42 (2006.01); C07C 17/386 (2006.01)
CPC B01D 3/36 (2013.01) [B01D 3/40 (2013.01); B01D 3/42 (2013.01); B01D 3/4294 (2013.01); C07C 17/386 (2013.01)] 10 Claims
OG exemplary drawing
 
1. Process for separating a plurality of chemical components from a chemical mixture, the chemical mixture comprising a plurality of fluorinated fluids, each fluorinated fluid comprising at least one fluorinated chemical component, the process comprising:
a step of identification in the chemical mixture of at least two sub-mixtures, each sub-mixture being a simple sub-mixture comprising a single chemical component or a complex sub-mixture comprising a combination of chemical components, each complex sub-mixture being associated either with a first secondary distillation group by a pressure swing distillation method, or with a second secondary distillation group by an extraction distillation method,
a primary distillation step, by means of a simple main distillation column, so as to separate each identified sub-mixture,
a secondary distillation step, by means of a same advanced unit of two auxiliary extraction columns, of each complex sub-mixture of the first group and of the second group, the complex sub-mixtures of the first group being separated by the pressure swing distillation method and the complex sub-mixtures of the second group being separated via a predetermined solvent, by the extraction distillation method, by the same two auxiliary columns.