A coupled apparatus of cyclone and granular bed filter/adsorber for dry gas purification

which combined centrifugal separation

filtration and adsorption

was designed to use in a wide range of temperatures and to provide a new means for high temperature gas purification. The static pressure drop between inlet and outlet of the apparatus was measured and investigated on no dust added gas under different granular circulation rates and inlet gas velocities. The result shows that static pressure drop

which dimensionless standard deviation is maintained within 0.4%

has strong stability and predictability over the whole operation process. The static pressure drop is not influenced by granular circulation rate but has a good quadratic (parabola) relationship with inlet velocity. Actual pressure drop can be divided into five parts

namely

five friction losses caused by inlet pipeline

fittings between square and circle ducts

vortex motion

granular bed and outlet pipeline. Correlation equation between the vortex motion friction

the actual pressure drop

and the inlet velocity head was developed. Compared to common cyclone separator

this device has no significant increase in resistance coefficient. The vortex motion effect between cyclone and granular bed was confirmed through preliminary experimental data of operation with added dust

providing a foundation for further optimization.