Abstract: A multiple-stage static mixer utilizing fractally progressive stages wherein the flow of materials is divided and rotated through an angle about the flow axis at each stage. Each stage is mathematically derived in a power progression from the previous stage to have an increased number of mixing modules, for example, 1, 4, 16, 64, or 1, 3, 9, 27, in accordance with the series L/n0, L/n1, L/n2 . . . L/nj wherein L is the transverse length of a stage and n is the number of elements in each mixing module and sub-module. Mixing thus proceeds from relatively coarse to very fine in just a few stages which is a far more efficient methodology than is found in prior art non-progressive multiple-stage static mixers. The mixer may be adapted to both round and rectangular flow tubes and is especially suited to mixing multiple streams of gases.

Abstract: A gas treatment system comprises a variable flow regulator assembly placed in operable and fluid communication with a shell of a gas treatment device. The variable flow regulator assembly comprises two or more conduit portions comprising a first portion and a second portion, wherein the second portion has a coefficient of thermal expansion greater than a first coefficient of thermal expansion of the first portion. The variable flow regulator assembly structurally changes shape to alter the flow maldistribution of an exhaust gas stream into the gas treatment device when light off is achieved.

Abstract: A gas treatment system comprises a variable flow regulator assembly placed in operable and fluid communication with a shell of a gas treatment device. The variable flow regulator assembly comprises two or more conduit portions comprising a first portion and a second portion, wherein the second portion has a coefficient of thermal expansion greater than a first coefficient of thermal expansion of the first portion. The variable flow regulator assembly structurally changes shape to alter the flow maldistribution of an exhaust gas stream into the gas treatment device when light off is achieved.