Mechanical Purification of Steam Within the Boiler Drum

The paper is a report of tests run on new high-pressure high-temperature boiler installations to determine a baffle arrangement for the steam drums that would prevent objectionable carry-over during normal operation.

The arrangements of three types of baffle are illustrated and the results are given in tables and graphs as conductivity measurements on condensed steam samples taken from eight different points in the drum.

The cyclone-separator baffle finally developed will deliver steam containing solids approximating 0.5 ppm with boiler-water concentrations up to 1600 ppm, and will permit a large range of load change and water-level variation.