Mass transfer to particles: Part II. Suspended in a pipeline

Mass transfer coefficients are reported for particles of boric acid and benzoic acid dissolving in water in a 2‐in. pipeline. For water velocities of 1 to 4 ft./sec. the coefficients are 1.2 to 2 times the values predicted for freely falling particles. The coefficients are slightly less than those obtained in agitated tanks at the same power per unit volume.