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| Titel: |
SIMPLIFIED DEWPOINT PREDICTIONS FOR N-TRACE SALT-CONTAINING NON-IDEAL CONDENSATES IN HIGH TEMPERATURE REACTIVE VAPOR ENVIRONMENTS |
| Auteur: |
Roy, Ratul Liang, Baishen Rosner, Daniel E. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 72 (1988) nr. 1 pagina's 35-46 |
| Jaar: |
1988-10-01 |
| Inhoud: |
Accurate predictions of dewpoint temperatures in multi-trace salt-containing high temperature reactive environments are complicated by two common phenomena. First, the reactive environment promotes the formation of vapor precursors other than the 'parent' condensate salts (due to dissociation and reaction among the combustion products). Second, the salt condensate solutions that form are usually thermodynamically non-ideal even though the coexisting multi-species vapor is, frequently, ideal. As an extension of our recent treatment of the simpler (limiting) case of a binary non-ideal solution, we present here a computational procedure that makes the general N-component case tractable and illustrate its implementation for the case of a ternary (alkali sulfate) condensate system. To account for the multiplicity of vapor phase species we again rely on an 'effective (single component) vapor pressure' for each 'component' salt to permit simple calculations for the salt solution dew point. The required single salt vapor/liquid equilibrium data are here generated using a thermochemical equilibrium (free-energy minimization) code. When recast as an 'equivalent' vapor pressure correlation, this information is then used to solve the multisalt dewpoint problem by satisfying the requirements of vapor/condensate equilibrium with a multi-component non-ideal condensate solution. As an illustrative (ternary) case, using the principles outlined above, we carry out calculations for the prototypical system: K2S04/Na2S04/Li2S04. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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