SYSTEMS AND METHODS FOR REGENERATING EXTRACTIVE DISTILLATION SOLVENT WITH ENHANCED ENTHALPY

原文（中国語）

Provided here are systems and methods that include facilitate regeneration of solvents for extractive distillation solvent with enhanced enthalpy. Examples include a method that includes receiving a high-temperature lean solvent stream including 1-methylpyrrolidin-2-one (NMP) and at a temperature between 145° C. and 155° C. from a degasser column. The method includes splitting the high-temperature lean solvent stream into a first portion and a second portion, transferring heat from the first portion to a solvent feed stream to produce a cooled lean solvent stream and a heated solvent feed stream, and regenerating the second portion to produce a purified lean solvent stream. The method includes directing the cooled lean solvent stream and the purified lean solvent stream to an extractive distillation zone.