Processes for conjointly producing bromine and calcium chloride

A process comprising:

• (a) feeding an aqueous HBr-rich stream comprising amine by-products from one or more commercial processes and having a pH of less than about 4, and a feed brine dilute in CaCl2 and comprising at least about 10 wt % NaCl based on the total weight of the feed brine, either together or separately to a tower, such that production of shock-sensitive-by-products in the tower is minimized;
• (b) oxidizing bromide moieties within the tower with Cl2 to produce Br2;
• (c) recovering Br2 from the tower;
• (d) removing bromide-depleted bottoms from the tower, such bottoms comprising less than about 35 wt % HCl;
• (e) adding a Ca++ source to the bromide depleted bottoms to convert substantially all of the HCl in the bottoms to CaCl2;
• (f) as necessary, removing water from the treated bottoms from (e) to produce a concentrated aqueous solution comprising from about 5 wt % CaCl2 to about 40 wt % CaCl2;
• and
• (g) recovering the concentrated aqueous solution comprising from about 5 wt % CaCl2 to about 40 wt % CaCl2.