Distributed Parameter Model of Black Liquor Falling-Film Evaporators. 2. Modeling of a Multiple-Effect Evaporator Plant
| Autor: | Zdravko Stefanov, Karlene A. Hoo |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Work (thermodynamics)
Materials science General Chemical Engineering Condensation Mixing (process engineering) Evaporation General Chemistry Mechanics Flashing Industrial and Manufacturing Engineering Multiple-effect evaporator Physics::Fluid Dynamics Fluid dynamics Physics::Atmospheric and Oceanic Physics Evaporator |
| Zdroj: | Industrial & Engineering Chemistry Research. 43:8117-8132 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie049611g |
| Popis: | In the first of two parts of this work, a distributed parameter model, based on first-principles knowledge about the fluid dynamics and heat-transfer processes, was developed for the evaporation side of a single plate (lamella) of a falling-film evaporator. In the second part, the work expands on the single-plate model to develop a fundamental model of a falling-film evaporator that accounts for the condensation side of the plate, the heating/flashing section at the evaporator entrance, the evaporator inventory, mixing, and recirculation flows. On the basis of the single evaporator model, a multiple evaporator plant that consists of one superconcentrator (three falling-film evaporators as one unit) and four falling-film evaporators is modeled. The model, its numerical solution, and its behavior at different operating conditions are presented and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|