Dehydration of acetic acid-water mixtures with near critical and supercritical fluid solvents
Equilibrium tie lines and phase densities are presented for acetic acid-water mixtures with near critical propane at 361K and 52 bar. Experimental measurements were obtained with a static technique; the equilibrium phases were directly sampled with high-pressure liquid sample injection valves at the temperature and pressure of interest. The data obtained in this work indicate that near critical propane can be used to facilitate the production of glacial acetic acid from dilute acetic acid-water solutions. Both these experimental data and the authors earlier results for acetic acid-water mixtures with supercritical carbon dioxide have been used to test an equation of state which has recently been developed by Grenzheuser and Gmehling for systems which contain associating fluids. Results indicate that the equation's pure component parameters need to be refitted to represent the critical region more accurately.
- Research Organization:
- Clemson Univ., SC (USA)
- OSTI ID:
- 6256120
- Report Number(s):
- CONF-871038-
- Journal Information:
- Sep. Sci. Technol.; (United States), Vol. 23:12,13; Conference: 5. symposium on separation science and technology for energy applications, Knoxville, TN, USA, 26 Oct 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACETIC ACID
DEHYDRATION
PHASE DIAGRAMS
BINARY MIXTURES
CARBON DIOXIDE
SOLVENT PROPERTIES
SUPERCRITICAL STATE
PROPANE
CRITICAL PRESSURE
CRITICAL TEMPERATURE
WATER
AQUEOUS SOLUTIONS
DENSITY
EQUATIONS OF STATE
EQUILIBRIUM
EXPERIMENTAL DATA
INJECTION
MEDIUM PRESSURE
MEDIUM TEMPERATURE
ORGANIC SOLVENTS
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CARBOXYLIC ACIDS
CHALCOGENIDES
DATA
DIAGRAMS
DISPERSIONS
EQUATIONS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
INTAKE
MIXTURES
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLUTIONS
SOLVENTS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
400105* - Separation Procedures
400201 - Chemical & Physicochemical Properties