The multi-tube shop-assembled Dustaclone from Thermax, consists of a housing containing a number of collection tubes, each of which is, in fact, a centrifugal dust collector. The dust laden gas entering the dirty air plenum moves downwards into the collecting tube (refer figure), being guided by a helical vaned annular ring. These vanes impart a smooth spiral movement to the gas, setting up a high centrifugal action.

As the gas descends in a cyclonic pattern, the dust is thrown outwards and is discharged through peripheral slots in a shave-off boot. A vortex is formed at the bottom of the centrifugal tube and the clean gas forms an inner whirl which ascends vertically into a discharge (outlet) tube, and then collectively out of the unit through the outlet plenum.

All the collectors are completely assembled to the extent practical for shipment, resulting in minimum erection man-hours and handling at the installation site.

Standard models in the Dustaclone-S range are now available:

• For gas volumes from 2,000 to more than 1,00,000 m3/hr
• With tubes varying in number from 2 to 100