METHOD OF SATURATED AMINO SOLUTIONS RECOVERY Russian patent published in 2012 - IPC B01D53/96 B01D53/14 

FIELD: process engineering.

SUBSTANCE: invention relates to recovery of amino solutions used in gas or hydrocarbon fluid cleaning of acid components by amino solutions. Saturated amino solution is fed via recuperative heat exchanger into stripper. Acid gases together with water vapors are fed from stripper top into vapor-gas mix cooler for separation into acid gases and fluid. Amino solution to be recovered is fed via heat exchanger into stripper stilling section wherefrom recovered amino solution is fed to inlet of pump that develops pressure of 0.1-1.5 MPa. Then, said solution is divided into two flows. First flow is fed to heater inlet to maintain solution fluid state. Then, heated flow is directed into pressure regulator to convert heated amino solution into two-phase vapor-liquid state while formed two-phase mix is fed into stripper stilling section. Produced vapor is fed therefrom into stripper mass exchange section. Second flow is fed into recuperative heat exchanger. Note here that equal flow rates of amino portions fed to saturate amino solution unit and those escaping from liquid recovered amino solution unit.

EFFECT: decreased erosion of structural elements and amine losses.

4 cl, 1 dwg