Thermal diffusion in a countercurrent-flow Frazier scheme inclined for improved performance

The separation theory of thermal diffusion in inclined flat-plate columns o f countercurrent-flow Frazier scheme is developed and investigated. The equ ations for the optimum angles of inclination as well as for maximum separat ion, maximum output and minimum column length, are derived. The author has previously shown that considerable improvement in performance is obtained w hen a concurrent Frazier scheme is operated at the optimum angles of inclin ation: it is shown here that further improvement is achieved if the feed st reams are conducted in countercurrent flow. (C) 2001 Elsevier Science Ltd. All rights reserved.