This article discusses the cyclone performance using dust-laden combustible gas generated by the process of gasification. Unlike a conventional gas separation application, the input gas stream to the cyclone is hot and contains particulate matter in a wide range of sizes. In this study, two cyclone designs and their performances using theoretical and computational fluid dynamic models, supported by experimental work, have been discussed. The challenges faced with respect to measurement of particle size distribution and the particle shape have been identified and their effects on the cyclone performance analyzed.
DirgoJLeithtD. Cyclone collection efficiency: comparison of experimental results with theoretical predictions. Aerosol Sci Technol1985; 4: 401–415.
2.
ReedTBDasA. Handbook of biomass downdraft gasifier engine systems. Solar Research Institute, Golden, CO, SERI/SP-271-3022, March 1988.
3.
DasappaSPaulPJRajanNKS. Biomass gasification technology – a route to meet energy needs. Curr Sci2004; 87(7): 908–916.
4.
IoziaDLLeithD. Effect of cyclone dimensions on gas flow pattern and collection efficiency. Aerosol Sci Technol1989; 10: 491–500.
5.
KayaFKaragozI. Performance analysis of numerical schemes in highly swirling turbulent flows in cyclones. Curr Sci2008; 94(10): 1273–1278.
6.
JiaoJZhengY. A multi-region model for determining the cyclone efficiency. Sep Purif Technol2007; 53: 266–273.
7.
ZhaoB. Development of a new method for evaluating cyclone efficiency. Chem Eng Process2005; 44: 447–451.
8.
IoziaDLLeithD. The logistic function and cyclone fractional efficiency. Aerosol Sci Technol1990; 12: 598–606.
9.
LeithDLichtW. The collection efficiency of cyclone type particle collectors: a new theoretical approach. AIChE Symp Ser1972; 68: 196–206.
10.
LiEWangYA. New collection theory of cyclone separators. AIChE J1989; 35(4): 666–669.
11.
GimbunJChuahTGFakhru’l-RaziA. The influence of temperature and inlet velocity on cyclone pressure drop: a CFD study. Chem Eng Process2005; 44: 7–12.
12.
RamachandranGLeithDDirgoJ. Cyclone optimization based on a new empirical model for pressure drop. Aerosol Sci Technol1991; 15: 135–148.
13.
GimbunJChoongTSYFakhru’l-RaziA. Prediction of the effect of dimension, particle density, temperature, and inlet velocity on cyclone collection efficiency. J Teknologi2004; 40(F): 37–50.
14.
LappleCE. Process uses many collector types. Chem Eng1951; 58: 144–144.
15.
ShepherdBCBLappleCE. Air pollution control: a design approach. In: CooperCDAlleyFC (eds) Cyclones, 2nd ed. Prospect Heights, IL: Waveland Press Inc, 1939, pp. 127–139.
16.
CasalJMartinezJM. A better way to calculate cyclone pressure drop. Chem Eng1983; 90: 99–99.
17.
DirgoJ. Relationships between cyclone dimensions and performance. Doctoral Thesis, Harvard University, USA, 1988.
18.
CokerAK. Understand cyclone design. Chem Eng Prog1993; 28: 51–55.
19.
Ministry of New and Renewable Energy. Qualifying, testing and performance evaluation of biomass gasifiers and gasifier-engine systems. Ministry of New and Renewable Energy, Government of India. Report no. 203-01-04/97-BM, April 2000.
20.
CooperCDAlleyFC. Air pollution control: a design approach, 3rd ed. Prospect Heights, IL: Waveland Press Inc, 2002.
21.
ZhuYLeeKW. Experimental study on small cyclones operating at high flow rates. J Aerosol Sci1999; 30(10): 1303–1315.
22.
XiangRParkSHLeeKW. Effects of cone dimension on cyclone performance. J Aerosol Sci2001; 32: 549–561.
23.
YoshidaHSaekiTHashimotoK. Size classification of submicron powder by air cyclone three-dimensional and analysis. J Chem Eng Jpn1991; 24(5): 640–647.
WangBXuDLXiaoGX. Numerical study of gas-solid flow in a cyclone separator. 3rd international conference on CFD in minerals and process industries, 10–12 December 2003, Melbourne, Australia, pp. 371–376.
26.
ShalabyHPachlerKWozniakK. Comparative study of the continuous phase flow in a cyclone separator using different turbulence models. Int J Numer Methods Fluids2005; 48: 1175–1197.
27.
FraserSMAbdel RazekAMAbdullahMZ. Computational and experimental investigations in a cyclone dust separator. Proc IMechE, Part E: J Process Mech Eng1997; 211: 247–257.
28.
GongALWangL. Numerical study of gas phase flow in cyclones with repds. Aerosol Sci Technol2004; 38: 506–512.
29.
ShiLBaylessD. Comparison of boundary conditions for predicting the collection efficiency of cyclones. Powder Technol2007; 173: 29–37.
30.
BohnetM. Influence of the gas temperature on the separation efficiency of aerocyclones. Chem Eng Process1995; 34: 151–156.
