Practical applications of electrical precipitation and progress of the research corporation

The technical and finanical progress made by the Research Corporation since its organization in 1912 is given, and several plants are described. Voltages, electrode spacings, power consumption, etc., are given for several installations. Mention is made of a number of improvements in the electrical apparatus and means for its control. Progress has been made towards standardization of apparatus for this work. The paper is illustrated with reproductions from photographs of installations in various stages of operation. Curves and charts show the peculiar character of the circuit, the method of obtaining data to be used in designing treaters and of conducting tests. Alternating current of 250,000 volts, has been rectified and used for precipitating particles from gases. Fumes have been separated into fractions by means of temperature control and the electric processes. A selected bibliography is included. The statement is made that within three years time the original capital of $10,100 has been paid back to the stockholders, and that a fund of over $150,000 has been accumulated from the corporation´s work, to be used for scientific research.