MIXED BED DESALTING COLUMN OF CONDENSATE AND OPERATING METHOD THEREOF

摘要

PURPOSE:To improve desalting performance and to separate and regenerate cation and anion exchange resins thorougly in a mixed bed desalting tower by packing a non-ion exchangeable resin of which the base material is methacrylate in addition to ordinary cation and anion exchange resins. CONSTITUTION:A non-ion exchangeable methacrylate resin 10 is used in addition to a cation exchange resin 11 and an anion exchange resin 9 in a mixed bed desalting device 5 and the grain sizes of the resins are made larger in order of the resin 11> the resin 10> the resin 9. The resins are so packed in the column that the grain size distribution of the entire resin attains >=1.6 coefft. of uniformity. The resins in the column 5 which are deteriorated in the desalting performance are first separated to the three by the differences in the specific gravity thereof in a regeneration column 8 for the cation exchange resin, and the resin 9 is transferred into a regeneration column 12. The resin 10 contained by each half into the respective exchange resins from the intermediate point adsorbs clads and the clads are desorbed in the respective regeneration columns.