Performance estimation of a Venturi scrubber using a computational model for capturing dust particles with liquid spray.
A Venturi scrubber has dispersed three-phase flow of gas, dust, and liquid. Atomization of a liquid jet and interaction between the phases has a large effect on the performance of Venturi scrubbers. In this study, a computational model for the interactive three-phase flow in a Venturi scrubber has been developed to estimate pressure drop and collection efficiency. The Eulerian-Lagrangian method is used to solve the model numerically. Gas flow is solved using the Eulerian approach by using the Navier-Stokes equations, and the motion of dust and liquid droplets, described by the Basset-Boussinesq-Oseen (B-B-O) equation, is solved using the Lagrangian approach. This model includes interaction between gas and droplets, atomization of a liquid jet, droplet deformation, breakup and collision of droplets, and capture of dust by droplets. A circular Pease-Anthony Venturi scrubber was simulated numerically with this new model. The numerical results were compared with earlier experimental data for pressure drop and collection efficiency, and gave good agreements.
Pak
S I
SI
National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon 305-333, Republic of Korea. paksunil@dreamwiz.com
Chang
K S
KS
D000393:Air Pollutants / Q000302:isolation & purification*; D000397:Air Pollution / Q000517:prevention & control*; D003198:Computer Simulation; D004391:Dust / Q000032:analysis / Q000517:prevention & control*; D005740:Gases / Q000737:chemistry; D011312:Pressure
D000393:Air Pollutants; D004391:Dust; D005740:Gases