6Single and Multiphase Systems (1)

6Single and Multiphase Systems (1) - CHEE 2331 Chemical...

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Unformatted text preview: CHEE 2331 Chemical Processes Chemical Processes Single and Multiphase Single and Multiphase Systems Systems Chapter 5, pages 187 Chapter 5, pages 187-- 200 200 Chapter 6, pages Chapter 6, pages 237 237-- 258 258 epartment of Chemical and epartment of Chemical and Biomolecular Biomolecular Engineering Engineering Properties (of the streams) Look it up Appendix B in the text CD in the text Perrys Handbook of Chemical Engineering CRC Handbook Other data bases Estimate it Empirical correlations based on experimental data Measure it Phases gas liquid solid gas-liquid solid-liquid gas-liquid solid Single phase Two-phase Three-phase Phase diagram (pure substance) P T gas liquid solid s a t u r a t i o n c u r v e f r e e z i n g c u r v e s u b l i m a t i o n c u r v e Normal boiling (condensation) point - T s at 1 atm Normal freezing (melting) point T f at 1 atm 1 atm T b T m Phase diagram (pure substance) P T gas liquid solid s a t u r a t i o n c u r v e f r e e z i n g c u r v e s u b l i m a t i o n c u r v e critical point P c T c supercritical fluid T > T* - superheated gas triple point P r T r How many properties are needed to define a state? Gibbs phase rule: N = 2 + C P N = number of properties needed C = number of compounds present P = number of phases present T < T* supercooled liquid Phase diagram (pure substance) P T gas liquid solid (P,T) state P 1 ,T 1 P 2 T 1 isothermal path or process P 1 T 1 P 1+ T 1 P*T 1 P*T 1 P * T 1 P 2 T 1 Gases (single component)...
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This note was uploaded on 04/15/2010 for the course CHEE 2331 taught by Professor Alim during the Spring '08 term at University of Houston.

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6Single and Multiphase Systems (1) - CHEE 2331 Chemical...

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