Trap columns continuously regenerated

FIGURE 15 Continuously regenerated trap column schematic. 

Dionex offers a just add water system for electrolyte generation and purification of commonly used eluents such as KOH and methanesulfonic acid. Eluents are generated from deionized water using an Eluent Generator (EG) cartridge and then polished of contaminants using a continuous-regeneration trap column. 

In an effort to produce a low CO2 content in the absorber exit gas, as well as to minimize energy consumption, a split stream process has been developed. As Figure 3-6 illustrates, the rich solvent flows downward through about 70% of the total packed depth in the regenerator at which point it is intercepted by a trap tray. The majority of the solvent, which has been partially regenerated, is withdrawn at that level. The balance of the solvent continues down the column where it now is stripped... 

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