Device and method for converting and separating at least one reactant and a reaction product thereof

A method for converting at least one reactant into at least one reaction product and separating the at least one reactant from the at least one reaction product, the method comprising:

• feeding the at least one reactant to one or more of a first fluid, a second fluid, or a third fluid contained in a vessel with a vessel inner volume into which a confinement is submerged, the confinement providing a confinement inner volume in fluid connection with the vessel inner volume, wherein the first fluid has a first density ρ1 and the second fluid has a second density ρ2, with ρ1>ρ2, wherein the first fluid is at most partly miscible with the second fluid so that the first fluid forms a lower phase and the second fluid forms an upper phase in the vessel inner volume, wherein the vessel inner volume is at most partly filled with the second fluid in fluid connection with the confinement inner volume, wherein the confinement contains the third fluid with a third density ρ3, wherein ρ3>ρ2 so that the second fluid forms an upper layer and the third fluid forms a lower layer in the confinement inner volume, wherein the third fluid may be the same as or different from the first fluid, wherein at least one of the first fluid, the second fluid, and the third fluid is immiscible with the other two fluids,
• wherein at least one of the first fluid and the third fluid contain a fourth phase which is a solid or semi solid, said fourth phase being capable of promoting a chemical, biochemical, or biological reaction for the conversion of the at least one reactant into the at least one reaction product,
• wherein the at least one reactant and the at least one reaction product have a different affinity for at least two of the first fluid, the second fluid, and the third fluid.