Patent ID: 7069668

Claim:
A portable tank comprising an upper region, a middle region and a lower region wherein (a) the upper region is a cover body adjacent to and attached to the middle region and comprises an opening in the central region to provide a materials inlet; a first peripheral opening and a second peripheral opening provided at the periphery of the cover body wherein a gas inlet is attached to the first peripheral opening and a gas outlet is attached to the second peripheral opening and further wherein the gas inlet and gas outlet extend through the cover body; (b) the middle region and the lower region each comprise side walls and are continuous or connected such that the combination of the middle and lower regions define a cavity; (c) the middle region comprises a gas disperser connecting with the gas inlet, positioned within the cavity defined by the middle and lower regions along the internal side wall of the middle region wherein the gas disperser is constructed with a plurality of support rests positioned intermittently along the length of the gas disperser; and a clean out port mounted into the side wall of the middle region adjacent to the gas disperser; and (d) the lower region comprises a materials discharge outlet at its lower end.