Method and apparatus for optimizing the operation of a rectification column provided with a lateral boiler

摘要

The invention relates to a process and to an apparatus for optimising the operation of a stripping column, provided with a side reboiler, for processing the extract obtained in the extraction of hydrocarbon-containing feed products with N-substituted morpholines with substituents of not more than 7 carbon atoms as the selective solvent. In this case, between 5 and 30 % by volume of the liquid fed to the riser tray (11) of the stripping column (1) is passed down directly to the next lower tray (17) and the remainder is fed to the side reboiler (10). The vapour/liquid mixture leaving the top of the side reboiler (10) is returned into the stripping column, the return feed going either to the feed tray (3) or to the tray (17) below the riser tray. …IMAGE…