Cyclone dust

A. C. Stem, K. J. Caplan, and P. D. Bush, Cyclone Dust Collectors, American Petroleum Institute, New York, 1955. 

FIG. 14-108 ( 7)Liqi lid entrainment from the bottom of a vessel by centrifugal flow. (Rietema and Veroer, Cyclones in Industry, Elsevier, Amsterdam, 1961. ) (h) Gas-oiitlet sldrt for liquid cyclones. (Stern et al. Cyclone Dust Collectors, Ametican Petroleum Institute, New York, 1955. )... 

Ni has been found to be about 5 turns of the gas stream in the unit, and is considered somewhat conservative. When re-entrainment takes place, N, may drop to 1.0 or 2.0. The API study presents an excellent survey of cyclone dust collectors [7]. 

Figure 4-46. General efficiency curves, applies specifically to helical entry cyclone dust separators. Courtesy of The Ducon Co.

Figure 4-47. General efficiency curve applies specifically to involute entry cyclone dust separators. Courtesy of American Blow/er Div., American Radiator and Standard Sanitary Corp.

Cyclone Dust Collectors, Engineering Report, American Petroleum Institute, Division of Refining, 50 West 50th St., New York, N.Y. 

Figure 7.2-11. Spray drier with heat recovery system 1. Spray tower and drying system 2. Air heater 3. Air fan 4. Cyclone dust separator 5. Wet dust separator and entrainment separator 6. Exhaust air fan 7. Pneumatic product conveyer 8. Intermediate product storage 9. Product sieving and packing 10. Wet product pumping system (by courtesy of BMA, TAG-Division). 

Rosin, P., Rammler, E., and Intelmann, W., Principles and Limits of Cyclone Dust Removal, Zeit. Ver. Deutscher Ing., 76 433ff (1932)... 

Reentrainment from the bottom of the cyclone can be prevented in several ways. If a typical long-cone dry cyclone is used and liquid is kept continually drained, vortex entrainment is unlikely. However, a vortex breaker baffle in the outlet is desirable, and perhaps a flat disk on top extending to within 2 to 5 cm (0.8 to 2 in) of the walls may be beneficial. Often liquid cyclones are built without cones and have dished bottoms. The modifications described earlier are definitely needed in such situations. Stern, Caplan, and Rush (Cyclone Dust Collectors, American Petroleum Institute, New York, 1955) and Rietema and Verver (in Tengbergen, Cyclones in Industry, Elsevier, Amsterdam, 1961, chap. 7) have discussed liquid-collecting cyclones. 

The cyclone dust collector is one of the simplest dust collectors no moving parts and ease in maintenance. In spite of the simple structure, the centrifugal force on the solids in the cyclone dust collector can easily reach 300 to 2,000 times the gravitational force and a... 

Flow pattern and pressure drop in cyclone dust collectors. Ibid., 31 972-984. 

Cyclone dust-outlet diameter, ft Gas rate, ftVs Gas density, Ib/ft ... 

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