黄克谨a; 战德志b; 中岩(月劵)c; 中根墝c; 高松武一郎d
Huang Kejin; Zhan Dezhi; Nakaiwa Masaru; Nakane Takashi; Takamatsu Takeichiro
摘要: A generalized steady-state model is being developed for an internal heat integrated
distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is
devised for solving the model equations.Separation of an ethanol-water binary mixture is
simulated and analyzed with the model. Two pinch points are found within the process,
making the separation extremely difficult and expensive. Two sharp fronts in the
temperature and the composition profiles are being observed. With the introduction of heat
integration, satisfactory separation may be obtained in a limited number of stages with
lower reflux ratios. Increasing the pressure difference between the rectifying and the
stripping sections, however, would bring about a reduced relative volatility between the
two components involved, creating adverse separation performances. It is obvious that
optimization of the IHIDiC is of prime importance.