Patent ID: 7377967

Claim:
A plant comprising: an absorber that is configured to remove an acid gas from a feed gas, wherein the absorber is further configured to receive a lean solvent and a semi-lean solvent and to produce a semi-rich solvent and a rich solvent; a first regenerator fluidly coupled to the absorber and configured to receive a first portion of the rich solvent and further configured to produce the lean solvent and a first regenerator overhead; a second regenerator fluidly coupled to the absorber and configured to receive a second portion of the rich solvent and further configured to produce the semi-lean solvent and a second regenerator overhead; a heat exchanger operationally coupled to the absorber and configured to preheat the second portion of the rich solvent against the lean solvent from the first regenerator; and wherein the first and second regenerators are configured such that the second regenerator overhead and the semi-lean solvent that is fed to the absorber are substantially exclusively produced from the second portion of the rich solvent.