A SERIES of laboratory and plant tests were conducted recently to find suitable materials of construction to handle both chlorine gas being dried by sulfuric acid and sulfuric acid saturated with chlorine. In these tests, 50 percent sulfuric acid and 87 percent sulfuric acid were used inasmuch as they corresponded to particular plant conditions in the drying of chlorine.
The corrosion data in Figure 1 show the results of a laboratory test in which commercially pure titanium A-70 was tested in 50 percent sulfuric acid saturated with chlorine-air mixtures. Samples of commercially pure titanium A-70 were immersed in wide mouth bottles which held the sulfuric acid. One sample totally was immersed in the acid, one sample partially immersed and one sample exposed in the vapor phase.
Mixtures of chlorine and air were introduced into the sulfuric acid with a diffuser which bubbled the gaseous mixture through the acid. The gaseous...
