![0022:0158: U. S. Bureau of Mines Collection - C-868-BC Titanium Tetrachloride Purification Equipment ["Titanium tetrachloride as purchased contains silicon tetrachloride , vanadium, and other impurities. Equipment shown is used for purification by treatment with hydrogen sulfide followed by distillation of the lighter fractions by refluxing and a final redistillation of the titanium tetrachloride. All operations are carried out in a closed system. The operators are standing on the operating floor where all instruments and controls are located. The vessel to the extreme left, upstairs, is a sulfide; the vessels on the main floor from left to right are the pot still and fractionating still. Note color code on all pipe lines."]](https://d8e7jbdw4fu0e.cloudfront.net/4452/6b064310-c1e8-11ee-ab27-e56e0f1cdedf-wzIJHnx.lg-nt@2x.jpg)
U. S. Bureau of Mines Collection - C-868-BC Titanium Tetrachloride Purification Equipment ["Titanium tetrachloride as purchased contains silicon tetrachloride , vanadium, and other impurities. Equipment shown is used for purification by treatment with hydrogen sulfide followed by distillation of the lighter fractions by refluxing and a final redistillation of the titanium tetrachloride. All operations are carried out in a closed system. The operators are standing on the operating floor where all instruments and controls are located. The vessel to the extreme left, upstairs, is a sulfide; the vessels on the main floor from left to right are the pot still and fractionating still. Note color code on all pipe lines."]