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Collection efficiencies of various designs of post‐cyclone
Author(s) -
Zhao Wennan,
Mujumdar Arun S.,
Ray Madhumita B.
Publication year - 2001
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450790502
Subject(s) - cyclone (programming language) , vortex , cyclonic separation , annulus (botany) , inlet , environmental science , meteorology , bleed , mechanics , residual , separator (oil production) , materials science , engineering , physics , mechanical engineering , computer science , composite material , art , visual arts , algorithm , field programmable gate array , embedded system , thermodynamics
Post‐cyclone (PoC) is a novel secondary dust separator, which collects a certain fraction of the particles escaping through the vortex finder of a reverse flow cyclone. Due to the residual swirl in the vortex finder, the particles in the effluent air are concentrated at the wall of the vortex finder in an outer annulus. The particles in the outer annulus are split from the main stream and collected in a bleed flow. This paper presents the experimentally determined collection efficiencies of various designs of PoC. Depending on the design, operating conditions and the size and density of the particles, PoC can reduce the emission of the parent cyclones by 5% to 50%. In some experiments, the bleed flow from PoC is recycled back to the inlet of the cyclone. Significant improvement in the removal of fines occurs when the bleed flow is recycled to the inlet.