• Control of Vehicular & Industry Emission

This is a simple particulate collection device using the principle of gravity to settle the particulate matter in a gas stream passing through its long chamber. The primary requirement of such a device would be a chamber in which the carrier gas velocity is reduced so as to allow the particulate matter to settle out of the moving gas stream under the action of gravity.

This particulate matter is then collected at the bottom of the chamber. The chamber is cleaned manually to dispose of the waste. The gas velocities in the settling chamber must be sufficiently low for the particles to settle due to gravitational force. Literature indicates that gas velocity less than about 3 m/s is needed to prevent re-entrainment of the settled particles. The gas velocity of less than 0.5 m/s will produce good results. Curtains, rods, baffles and wire mesh screens may be suspended in the chamber to minimize turbulence and to ensure uniform flow. The pressure drop through the chamber is usually low and is due to the entrance and exit losses.