Patent ID: 7101414

Claim:
A method of reducing the sorbate concentration of a process fluid stream using a sorption bed system comprising a rotating mass of a regenerable sorbent material, the method comprising the steps of: rotating the sorbent mass so that, in a cycle of operation, a given volume of the sorbent mass sequentially passes through first, second, third, fourth, fifth, and sixth zones, before returning to the first zone; passing a process fluid stream through the sorbent mass in the first zone; passing a regeneration fluid stream through the sorbent mass in the fourth zone; recycling a first isolation fluid stream in a closed loop, independent of the process fluid stream and the regeneration fluid stream, between the sorbent mass in the second zone and in the sixth zone; and recycling a second isolation fluid stream in a closed loop, independent of the process fluid stream, the regeneration fluid stream, and the first isolation fluid stream, between the sorbent mass in the third zone and in the fifth zone.