Patent ID: 7165881
Filing Date: 2007-01-23
Classification: B01F,B01J

Abstract:
1. A method comprising: supplying a first material at a respective first flow rate to a flow path constituted by an interdiffusion passage between two closely spaced stationary surfaces; supplying a second material to the flow path through the interdiffusion passage at a respective second flow rate, to be interdiffused with the first material therein, with resultant material from the interdiffusion and any consequent reaction moving in the flow path at a respective resultant flow rate; wherein the first material and the second material each forms a boundary layer against one of the two closely spaced stationary surfaces and after interdiffusion the resultant material from interdiffusion and any consequent reaction of the materials forms boundary layers against both surfaces; wherein the spacing between the two surfaces is equal to or less than the back-to-back thicknesses of the two boundary layers of material against the two surfaces, and if larger than the back-to-back thicknesses with a third layer between the two boundary layers has the third layer too thin to support turbulent convection or to cause channeling; and wherein the flow rates of the materials in the flow path are great enough to maintain laminar flow.