Method of removing particulate contaminants from a gas stream

Claim 1

A method of removing particulate contaminants from a stream of transient gas comprising the steps of: wetting the particulate contaminants in the transient gas stream with a liquid; causing the gas stream and wetted particulate contaminants to travel along a first path to a rotating impeller; accelerating the gas stream and the wetted particulate contaminants therein by the action of the impeller and imparting movement of the gas stream and wetted particulate contaminants along a second path at substantially right angles to the first path; exposing the accelerated gas stream and the wetted particulate contaminants therein to a centrifugal force by a rotating chamber to effect a separation of the wetted particulate contaminants from the gas stream and to effect a separation of the liquid from the particulate contaminants; and directing the gas stream to a clean gas outlet along a third path offset from and in opposition to the second path through an energy absorbing means including a series of spaced-apart extended surface plates adapted to rotate about an axis parallel to the first path wherein the third path is generally parallel to the extended surfaces of the plates to effect removal of the remaining particulate contaminants from the gas stream.

Claim 2

A method of removing particulate contaminants from a stream of transient gas comprising the steps of: wetting the particulate contaminants in the transient gas stream with a liquid; causing the gas stream and wetted particulate contaminants to travel along a first path to a rotating impeller; accelerating the gas stream and the wetted particulate contaminants therein by the action of the impeller and imparting movement of the gas stream and wetted particulate contaminants along a second path at substantially right angles to the first path; exposing the accelerated gas stream and the wetted particulate contaminants therein to a centrifugal force by a rotating chamber to effect a separation of the wetted particulate contaminants from the gas stream and to effect a separation of the liquid from the particulate contaminants; and directing the gas stream to a clean gas outlet along a third path offset from and in opposition to the second path through an energy absorbing means including a series of spaced-apart extended surface plates adapted to rotate about an axis parallel to the first path wherein the third path is generally parallel to the extended surfaces of the plates to effect removal of the remaining particulate contaminants from the gas stream.

Claim 3

A method of removing particulate contaminants from a stream of transient gas comprising the steps of: wetting the particulate contaminants in the transient gas stream with a liquid; causing the gas stream and wetted particulate contaminants to travel along a first path to a rotating impeller; accelerating the gas stream and the wetted particulate contaminants therein by the action of the impeller and imparting movement of the gas stream and wetted particulate contaminants along a second path at substantially right angles to the first path; exposing the accelerated gas stream and the wetted particulate contaminants therein to a centrifugal force by a rotating chamber to effect a separation of the wetted particulate contaminants from the gas stream and to effect a separation of the liquid from the particulate contaminants; and directing the gas stream to a clean gas outlet along a third path offset from and in opposition to the second path through an energy recovery means including a series of spaced-apart extended surface plates adapted to rotate about an axis parallel to the first path wherein the third path is generally parallel to the extended surfaces of the plates to effect removal of the remaining particulate contaminants from the gas stream.

Claim 4

A method of removing particulate contaminants from a stream of transient gas comprising the steps of: wetting the particulate contaminants in the transient gas stream with a liquid; causing the gas stream and wetted particulate contaminants to travel along a first path to a rotating impeller; accelerating the gas stream and the wetted particulate contaminants therein by the action of the impeller and imparting movement of the gas stream and wetted particulate contaminants along a second path at substantially right angles to the first path; exposing the accelerated gas stream and the wetted particulate contaminants therein to a centrifugal force by a rotating chamber to effect a separation of the wetted particulate contaminants from the gas stream and to effect a separation of the liquid from the particulate contaminants; and directing the gas stream to a clean gas outlet along a third path offset from and in opposition to the second path through an energy recovery means including a series of spaced-apart extended surface plates adapted to rotate about an axis parallel to the first path wherein the third path is generally parallel to the extended surfaces of the plates to effect removal of the remaining particulate contaminants from the gas stream.