Dynamic simulation of flash drums using rigorous physical property calculations
AUTOR(ES)
Gonçalves, F. M., Castier, M., Araújo, O. Q. F.
FONTE
Brazilian Journal of Chemical Engineering
DATA DE PUBLICAÇÃO
2007-06
RESUMO
The dynamics of flash drums is simulated using a formulation adequate for phase modeling with equations of state (EOS). The energy and mass balances are written as differential equations for the internal energy and the number of moles of each species. The algebraic equations of the model, solved at each time step, are those of a flash with specified internal energy, volume and mole numbers (UVN flash). A new aspect of our dynamic simulations is the use of direct iterations in phase volumes (instead of pressure) for solving the algebraic equations. It was also found that an iterative procedure previously suggested in the literature for UVN flashes becomes unreliable close to phase boundaries and a new alternative is proposed. Another unusual aspect of this work is that the model expressions, including the physical properties and their analytical derivatives, were quickly implemented using computer algebra.
Documentos Relacionados
- A rigorous framework for multiscale simulation of stochastic cellular networks
- Dynamic simulation of constrained mechanical systems using recursive projection algorithm
- Microhydrodynamics simulation of protein crystallization. I. Static calculations.
- Simulation of tailings release in dam break scenarios using physical models
- Pulse Shaper and Dynamic Compressive Property Investigation on Ice Using a Large-Sized Modified Split Hopkinson Pressure Bar