Regeneration of washing agent from a gas scrubber applies an initial heat and pressure to hold metal carbonyls in a solution for further heating and pressure for them to be separated by precipitation

摘要

To regenerate the washing agent (4), from a synthesis gas scrubber (W) using deep cooled methanol, the metal carbonyls are heated (E1) to a temperature and a higher pressure than the material's vapor pressure to be passed to a separation stage (B) where the metal carbonyls are precipitated. The material is heated (E2) initially and at a higher pressure and at a temperature where the metal carbonyls are held in a solution before relaxing (a).