### Abstract

The dynamics of flash drums is simulated with rigorous physical properties calculations using an equation of state to model each phase present. The formulation results in a set of differential-algebraic equations (DAE), whose differential equations describe the material and energy balances and the algebraic equations result from the conditions for thermodynamic equilibrium inside the drum. PSIDE (Parallel Software for Implicit Differential Equations) [Lioen et al., 1998] is used to solve the set of DAE with an efficient differential - algebraic approach. In this approach, the equations are solved simultaneously, with direct iterations in temperature, phase volumes and mole number of each component in each phase. The results show the efficiency of this methodology for the simulation of flash drums.

Original language | English |
---|---|

Pages (from-to) | 677-686 |

Number of pages | 10 |

Journal | Oil and Gas Science and Technology |

Volume | 63 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2008 |

Externally published | Yes |

### Fingerprint

### ASJC Scopus subject areas

- Chemical Engineering(all)
- Energy Engineering and Power Technology
- Fuel Technology

### Cite this

*Oil and Gas Science and Technology*,

*63*(5), 677-686. https://doi.org/10.2516/ogst:2008019

**Differential-algebraic approach to dynamic simulations of flash drums with rigorous evaluation of physical properties.** / Lima, Eduardo R A; Castier, Marcelo; Biscaia, Evaristo C.

Research output: Contribution to journal › Article

*Oil and Gas Science and Technology*, vol. 63, no. 5, pp. 677-686. https://doi.org/10.2516/ogst:2008019

}

TY - JOUR

T1 - Differential-algebraic approach to dynamic simulations of flash drums with rigorous evaluation of physical properties

AU - Lima, Eduardo R A

AU - Castier, Marcelo

AU - Biscaia, Evaristo C.

PY - 2008

Y1 - 2008

N2 - The dynamics of flash drums is simulated with rigorous physical properties calculations using an equation of state to model each phase present. The formulation results in a set of differential-algebraic equations (DAE), whose differential equations describe the material and energy balances and the algebraic equations result from the conditions for thermodynamic equilibrium inside the drum. PSIDE (Parallel Software for Implicit Differential Equations) [Lioen et al., 1998] is used to solve the set of DAE with an efficient differential - algebraic approach. In this approach, the equations are solved simultaneously, with direct iterations in temperature, phase volumes and mole number of each component in each phase. The results show the efficiency of this methodology for the simulation of flash drums.

AB - The dynamics of flash drums is simulated with rigorous physical properties calculations using an equation of state to model each phase present. The formulation results in a set of differential-algebraic equations (DAE), whose differential equations describe the material and energy balances and the algebraic equations result from the conditions for thermodynamic equilibrium inside the drum. PSIDE (Parallel Software for Implicit Differential Equations) [Lioen et al., 1998] is used to solve the set of DAE with an efficient differential - algebraic approach. In this approach, the equations are solved simultaneously, with direct iterations in temperature, phase volumes and mole number of each component in each phase. The results show the efficiency of this methodology for the simulation of flash drums.

UR - http://www.scopus.com/inward/record.url?scp=54949147947&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=54949147947&partnerID=8YFLogxK

U2 - 10.2516/ogst:2008019

DO - 10.2516/ogst:2008019

M3 - Article

AN - SCOPUS:54949147947

VL - 63

SP - 677

EP - 686

JO - Oil and Gas Science and Technology

JF - Oil and Gas Science and Technology

SN - 1294-4475

IS - 5

ER -