Patent ID: 7238223
Filing Date: 2007-07-03
Classification: B01D,Y10S

Abstract:
1. An apparatus for removing constituent from a fluid stream, the apparatus comprising: a duct having a fluid passageway to receive a fluid stream having constituent; a collection device coupled to the duct, the collection device in communication with the fluid passageway to filter the fluid stream; a sorbent injector to inject a sorbent in the fluid passageway of the duct, wherein the injection of the sorbent into the fluid passageway is upstream of the collection device; and an acoustic generator to generate an acoustic field in the fluid passageway of the duct to promote sorption of at least some of the constituent for collection by the collection device, the acoustic field having a frequency of sound determined to increase acoustical stimulation, and wherein the acoustic field is modulated according to different frequency and amplitude modulation ranges, and wherein said modulation is based on: (1) a time harmonic acoustic displacement of a fluid stream, (2) a time harmonic displacement of an agent particle in response to the acoustic filed and an associated viscous drag effect, (3) a relative displacement amplitude of the agent particle determined by subtracting the displacement of the fluid stream, or (4) a relative displacement over a plurality of frequencies to produce a curve such that the curve includes a global maximum wherein the global maximum is the sound to increase the acoustical simulation of diffusion.