Cyclone separators multiclones

Cyclone separators Heavy duty Standard duty Multiclone Disk separators Filters... 

Figure 20.1a. Cyclone separators, (a) Vortex pattern in a cyclone separator, (d) Multiclone separator. (Courtesy of Scientific Dust Collectors 2002).

Fig. 1.1.5. Examples of modern cyclones. From top left to bottom right Polutrol-Europe cyclone (excerpt from US Patent 3,802,570) Oneida wood shop cyclone cartridge filter Pentz/Mangano Clear-Vu cyclone two-stage LSR Core Separator-Butcher (2001) Shell Global Solutions Third-Stage Separator multiclone Dyson vacuum cleaner multiclone...

Multiclones, A multiclone separator consists of a number of small cyclones arranged in parallel in a chamber to handle large volumes of dust-laden air. They are capable of having very high... 

Because they can more effectively separate smaller droplets relative to a conventional, large, single-stage cyclone, multiclones are reported to have turn-down ratios (maximum-to-minimum volumetric feed rate that still meets performance targets) as high as 4 1. 

Strong similarities exist between gas-solid and gas-liquid cyclones and, thus, the reader may wish to review the related discussion presented in Sect. 16.2 pertaining to gas-solid multiclone separators. 

Before closing this discussion we wish to call attention to the fact that the liquid seal at the bottom of each cyclone causes their performance to be rather unaffected by flow imbalances of the type we just observed. This would not be the case had the cyclone underflows not been isolated from one another. In this case, any pressme imbalance that would exist between the cyclone underflows will cause gas to flow down some of the underflow openings and up other underflow openings. This, in turn can lead to a serious degradation of separation performance and is the reason why most multiclone systems do not perform as well as one of its individual cyclones tested in isolation. 

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