Patent ID: 8133468
Filing Date: 2012-03-13
Classification: C01B,C01F,C25B

Abstract:
1. A process comprising: (a) feeding an aqueous HBr-rich stream either together or separately with a feed brine dilute in CaCl (b) oxidizing bromide moieties within the tower with Cl (c) recovering Br (d) removing bromide-depleted bottoms from the tower, such bottoms comprising less than about 5 wt % HCl, based on the weight of the bromide-depleted bottoms; (e) adding a Ca (f) removing at least a portion of the NaCl and, as necessary, removing water, from the treated bottoms from (e) to produce a concentrated aqueous solution comprising from about 5 wt % CaCl (g) recovering the concentrated aqueous solution comprising from about 5 wt % CaCl (h) producing Cl