A NOVEL HORIZONTAL METHOD FOR TRAY DISTILLATION AND OTHER GAS LIQUID CONTACT OPERATIONS

摘要

The present invention discloses a horizontal multi stage distillation system. The system comprises a feed stream a distillate stream a residue stream a group of vessels a plurality of vapour non return valves (NRVs) a plurality of plurality of pumps a plurality of liquid recycle NRVs a liquid stream a vapour stream a plurality of liquid recycle streams a plurality of level transmitters a plurality of flow control valves (FCVs) and a plurality of liquid non return valves (NRVs). Each vessel is connected to the adjacent vessel. The group of vessels comprises a condenser vessel a reboiler vessel a feed vessel at least one rectification vessel and at least one stripping vessel. The present invention provides a horizontal multi stage distillation system with higher efficiency and operational flexibility compared with equivalent vertical distillation columns. The present invention also avoids the inter stage backflow of the liquid and vapours.