Salt, a By-Product of Condenser Cooling OTTOM. SMITH, Oklahoma Agricultural & Mechanical College, Stillwater, Okla. (:onceutrat.iun1 : ,ot.assium clrloride iriay be crystdiimed, leaving a motlm liquid containing about 50 per cent of calcium chloride; this is treated with chlorine, liberatirig free bromine, and oxidizing tho iodine to iodate, which is subsequently ohtained free. 011 evaporating the remaining liquid t,o dryness, a nearly pure calcium chloride remains. Tire byproduet magnesium hydroxide may he utilized as inilk of magnesia, Epsom salts, or as the basic carhonatc. The salt water obtained direct from the well is pumped by air lift into a tank where it is mixed by a Dorr agitator with milk of lime, and most of the magnesium is precipitated. After aeitation. the hvdroxide is concentrated with a Dorr thicken&, and the cleai salt solution is run into asecond thickener in which sufficient lime is added to give the solution a pll slightly greater than 10. The slurry from tlie second thickener is returned to the first. The salt water containing none of the corrosive niagnesium chloride is puniped undcrgrourld to the Texas Company's petroleum refinery adjoiniiig tho plant wlierc it is usod to cool the petroleum vapors from tho stills, and the exhaust f r m pumps, engin.?, and other equipment. Returning froni tire refinery (also by undergroiind pipes), tlic salt water, lieatcd 35' to 50' F. above the atmospheric % % tr~nipcr:iture, is cooled and conccntrated by Ibcing sprayed Sgeei6c ymri! 1.133 Binniiiio 0,001 0.03 l'rcitii iqmi ~ i o z ~ lafkr e s the fashion of a refincry cooling tower. Sodium rhloricf~ 12.75 Iodine Chkiiiin chloride
