Abstract
Nitrogen gas holdup is measured in a bubble column, 0.305 m in internal diameter, as a function of temperature(296–473 K), gas velocity (1.5 to 111 mm s −1), and solids concentration (0 to 40 wt.%) for nitrogen-Therminol-magnetite system. The column is equipped with a thirty-seven 19 mm outer diameter stainless steel tube bundle, tubes being arranged in an equilateral configuration with a pitch of 36.5 mm. The qualitative variations of gas holdup with operating parameters are discussed in the light of bubble dynamics and foaming characteristics. Several commonly employed correlations are found inadequate to reproduce the gas holdup data quantitatively. A simpler approach based on the drift-flux theory could correlate the data with one adjustable parameter which is physically identified as the rise velocity of a single bubble in an infinite medium.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
