| 内容提要: |
A
seepage catalysts packing internal (SCPI) in Catalytic Distillation Column was
simplified and used to research catalytic distillation process. Based on the
simplified internal, strict mathematical models consisting of differential
algebraic equations were developed to predict temperature and composition profiles
in CD column. Based on the gPROMS platform, gPROMS language was used to compile
three modules, one for reaction, and the other two modules for hydrodynamic
calculation and heat and mass transport calculations respectively. In addition,
Graphical User Interface (GUI) design and the corresponding port design were implemented
for each unit module in order to clearly represent the flow-sheet of catalytic
distillation process. In the process of solving the model, a new approach was
proposed to avoid difficulties connected with convergence and stability of
calculations. This approach was demonstrated to be efficient, it can reduce the
simulation time and still accurately predict the results. For model validation,
reaction and separation and the final flow-sheet of CD process with the
proposed mathematical models were validated respectively. A good agreement was obtained
between simulated result and experimental values, with error no more than 5%,indicating that these simulation methods are feasible
and gPROMS is a reliable and suitable technique for the research of catalytic distillation
process. |