| 초록 |
The purpose of this study is to produce a stable simulation of afixed-bed reactor using an imaginary input stream with assumed molar concentration, temperature andflow rate. Galerkin method is applied as the numerical integration mechanism. Several assumptions are adopted to make the process simulation as simple as possible. Thefixed-bed reactor shape is shell-and-tube type. Catalysts are pulverized intofine grains and reactions are expected to take place on the surface of catalysts. To simplify the mass balance, total massflow rate is held constant and only component mass balances are considered in modeling. Dochain(1992) studiedfixed-bed reactors for biological reactions and made assumption that diffusion term is negligible. Lordanidis(2002) suggested that convection is usually more dominant than diffusion if the materialflowrate is suffciently fast enough. Therefore the diffusion term is dropped out from the material balance and is turned into a hyperbolic wave equation. Also the reactor is assumed to be isothermal and to have homogeneous gas-phase. |
