An apparatus for treating matter comprising: a first cylindrical vessel having a first end, a second end and a first longitudinal axis; a first vortex finder connected to the first end of the first cylindrical vessel and aligned with the first longitudinal axis; a second cylindrical vessel having a third end, a fourth end and a second longitudinal axis; a second vortex finder connected to the third end of the second cylindrical vessel and aligned with the second longitudinal axis; an inlet passage disposed between the first vortex finder and the second vortex finder, connected tangentially to both the first cylindrical vessel proximate to the first end and the second cylindrical vessel proximate to the third end, and having an inlet and a third longitudinal axis; a divider disposed within the inlet passage along the third longitudinal axis that directs a heated gas from the inlet into the first cylindrical vessel to form a first vortex gas flow and the second cylindrical vessel to form a second vortex gas flow; a heated gas source connected to the inlet of the inlet passage; and a matter source connected to the first vortex finder or the second vortex finder or both the first vortex finder and the second vortex finder such that the matter drops into the first vortex finder or the second vortex finder or both the first vortex finder and the second vortex finder and is treated in a selected temperature range as the matter passes through a first central portion of the first vortex gas flow and exit the second end of the first cylindrical vessel and/or pass through a second central portion of the second vortex flow and exit the fourth end of the second cylindrical vessel. a first cylindrical vessel having a first end, a second end and a first longitudinal axis; a first vortex finder connected to the first end of the first cylindrical vessel and aligned with the first longitudinal axis; a second cylindrical vessel having a third end, a fourth end and a second longitudinal axis; a second vortex finder connected to the third end of the second cylindrical vessel and aligned with the second longitudinal axis; an inlet passage disposed between the first vortex finder and the second vortex finder, connected tangentially to both the first cylindrical vessel proximate to the first end and the second cylindrical vessel proximate to the third end, and having an inlet and a third longitudinal axis; a divider disposed within the inlet passage along the third longitudinal axis that directs a heated gas from the inlet into the first cylindrical vessel to form a first vortex gas flow and the second cylindrical vessel to form a second vortex gas flow; a heated gas source connected to the inlet of the inlet passage; and a matter source connected to the first vortex finder or the second vortex finder or both the first vortex finder and the second vortex finder such that the matter drops into the first vortex finder or the second vortex finder or both the first vortex finder and the second vortex finder and is treated in a selected temperature range as the matter passes through a first central portion of the first vortex gas flow and exit the second end of the first cylindrical vessel and/or pass through a second central portion of the second vortex flow and exit the fourth end of the second cylindrical vessel.