PATENTS

1744. ------. [JAEGAR, A. O.] (Selden Co.). Apparatus for Exothermic Vapor-Phase Catalytic Reactions Such As Production of Phthalic Anhydride From Napthalene. United States Patent 1,945,812, Feb. 6, 1934. Chem. Abs., vol. 28, 1934, p. 2223.

Describes various details of construction and operation of a converter having vertical catalyst tubes surrounded by a liquid bath such as molten NaNO3 and NaNO2 in which are immersed vertical heat-exchange elements through which a gaseous cooling medium such as air may be passed.