Patent ID: 7985379

Claim:
An apparatus for use during the abatement of a semiconductor manufacturing process comprising: a thermal reaction unit having: an interior porous wall that defines a central chamber, the interior porous wall formed from a plurality of stacked porous sections; at least one waste gas inlet in fluid communication with the central chamber and adapted to introduce a gaseous waste stream to the central chamber; a thermal mechanism positioned within the central chamber and adapted to decompose the gaseous waste stream within the central chamber, thereby forming reaction products; a fluid delivery system adapted to provide a fluid to the central chamber through the interior porous wall at a sufficient force to reduce deposition of reaction products on an inner surface of the interior porous wall of the central chamber; a water quench unit coupled to the thermal reaction unit and adapted to receive a gas stream from the thermal reaction unit; and a shield configured to be positioned between the quench unit and the interior porous wall and adapted to prevent water wetting a bottommost porous section of the plurality of stacked porous sections, the shield including an air knife inlet, wherein the air knife inlet injects an air knife to remove deposited material from the interior porous wall.