Author: Guitian, J., co-author
Magazine: International journal of Multiphase flow
Publication date: 1998
In Slurry hydrocracking and other foaming reactors, the foam rises to the top because it has a higher gas fraction than the bubbly mixture from which it comes. The high gas hold-up in foams is undesirable in chemical reactors because it strongly decreases the liquid residence time and in hydrocracking reactors also promotes the formation of coke. This reactor reproduces the foaming processes which are characteristic of the commercial system CANMET from Petrocanada. We discovered a critical condition for foaming; when the gas velocity exceeds a critical value, which depends on the liquid velocity, a foam interface appears at the top of the reactor.
Learn more: http://www.aem.umn.edu/people/faculty/joseph/archive/docs/bubblesinglecolumn.pdf
