5.1 Steam Extraction for Solvent Regeneration

Steam for the PCC plant solvent regeneration is extracted from the steam crossover pipe between the intermediate pressure and low pressure (LP) turbine cylinders, with the extraction pressure set as close as possible (allowing for pressure and temperature drops) to the pressure and temperature required by the PCC plant at the tie in battery limit.

Within the PCC plant battery limit, the steam is trimmed further and condensed (typically in a re-boiler feeding a stripper column) to provide the heat required to regenerate the solvent.