Mixing reactors

A method of mixing two fluids using a mixing reactor comprising a first body comprising two or more inlets and an outlet, and a second body placed concentrically inside the first body so as to define an inner passage formed by an inner surface of the first body and an outer surface of the second body, wherein the inner passage extends along a length of the first body, wherein the two or more inlets are spaced along the length of the first body, and wherein there is no mixing between a liquid passed through the second body and a liquid passing through the inner passage,

• the method comprising delivering a first fluid through one inlet of the first body of the mixing reactor, delivering a second fluid through one or more other inlets of the first body of the mixing reactor and extracting a mixed fluid from the outlet.

A cascade of mixing reactors, comprising a first mixing reactor and a second mixing reactor, wherein each of the first and second mixing reactors comprises a first body comprising two inlets and an outlet, and a second body placed concentrically inside the first body so as to define an inner passage formed by an inner surface of the first body and an outer surface of the second body, wherein the inner passage extends along a length of the first body, and wherein the outlet of the first body of the first mixing reactor is coupled to one inlet of the first body of the second mixing reactor.

A method of mixing two solutions, comprising introducing a first solution to a first inlet of a first reactor and a second solution to a second inlet of the first reactor, to produce a first mixed fluid at an outlet of the first reactor, and conveying the first mixed fluid to a first inlet of a second reactor and introducing further second solution to a second inlet of the second reactor, in which the concentrations of the second fluid introduced to the first and second reactors is different.