METOD ATT SELEKTIVT ATERVINNA NATRIUMCITRAT FRAN VATTENHALTIGA LOSNINGAR DERAV

摘要

A process for recovering sodium citrate from a solution utilized in an absorption/stripping process for SO2 recovery, which involves cooling a portion of the stripping solution to precipitate sodium sulfate, which is separated from the mother liquor. Thereafter, the mother liquor portion is subjected to an evaporative crystallization to precipitate sodium citrate, which is reintroduced along with fresh absorbent solution into the SO2 absorption/stripping process.