| Summary: | 碩士 === 國立臺灣科技大學 === 化學工程系 === 93 === Abstract
A static-type apparatus with a liquid-phase circulation loop was used to measure isothermal vapor-liquid equilibrium ( VLE ) data for the binary systems of methanol + dimethyl adipate, methanol + dimethyl glutarate and dimethyl glutarate + glutaric acid at temperatures from 353.15 K to 453.15 K. The experimental results exhibited no azeotrope formation.
Binary VLE data of methanol + dimethyl adipate were correlated satisfactorily with the NRTL-HOC and the UNIQUAC-HOC models, respectively. HOC denotes that the fugacity of vapor phase was calculated by two-term virial equation, where the second virial coefficient was estimated with the Hayden and O’Connell method. The data of methanol + dimethyl glutarate were correlated well with the NRTL-HOC, UNIQUAC-HOC and the Wilson-HOC models. The binary system of dimethyl glutarate + glutaric acid was measured at low pressures below 1 bar, the VLE data of this system were thus correlated with the NRTL, UNIQUAC and the Wilson models, respectively, under the assumption of vapor phase as ideal gas.
In addition, the saturated pressures of pure components were determined experiment all, for dimethyl glutarate and dimethyl adipate, and correlated with Antoine equation. These new VLE data and model parameters are needed for the process development of recovery of glutaric acid from the waste stream with reactive distillation.
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