Patent ID: 9737827
Date: 2017-08-22
CPC Classifications: B01D

Claim:
1. A system for removing sodium chloride from a brine, comprising: an ion exchange brine softener configured to receive the brine, to remove calcium and magnesium compounds from the brine, to produce a first output comprising the removed calcium and magnesium compounds, and to produce a second output comprising a softened brine; a mixer directly fluidly coupled via a first conduit to the ion exchange brine softener and comprising an outlet, wherein the mixer is configured to receive the second output from the ion exchange brine softener and to produce a third output comprising the softened brine; a first evaporator fluidly coupled to the mixer comprising an inlet, wherein the first evaporator is configured to receive the third output from the mixer, to produce a fourth output comprising a sodium chloride slurry, to produce a first intermediate output, and to produce a condensate; a second conduit extending between the outlet of the mixer and the inlet of the first evaporator, wherein the conduit comprises a first end configured to be directly coupled to the outlet of the mixer and a second end configured to be directly coupled to the inlet of the first evaporator, and wherein the conduit is configured to direct the third output from the mixer to the first evaporator; a second evaporator directly fluidly coupled via a third conduit to the first evaporator and configured to receive the first intermediate output, to produce a first recovery output, and to produce a second intermediate output, wherein the second evaporator is directly fluidly coupled via a fourth conduit to the mixer and configured to provide the first recovery output to the mixer; a third evaporator directly fluidly coupled via a fifth conduit to the second evaporator and configured to receive the second intermediate output, to produce a second recovery output, and to provide the second recovery output to the mixer, wherein the mixer is configured to use the first and second recovery outputs to produce the third output received by the first evaporator; and a regenerator configured to receive a portion of the second output, to receive the condensate, to produce an acid, a base, or both, and to provide the acid, the base, or both, to the ion exchange brine softener.