1. Question: What is Compressibility Factor?
2. Question: What is Compressor?
3. Question: What is Condensation?
4. Question: What is Critical pressure, Pc?
5. Question: What is Critical temperature, Tc?
6. Question: What is Crystallization?
7. Question: What is Decanter?
8. Question: What is Degree of Freedom?
9. Question: What is Dew point (of a gas mixture)?
10. Question: What is Distillation?
1. Question: What is Compressibility Factor?
Answer: Z=PV/nRT for a gas. If Z=1, then PV=nRT (the ideal gas equation of state) and the gas is said to behave ideally. Here Z is compressibility factor.
2. Question: What is Compressor?
Answer: A device that raises the pressure of a gas.
3. Question: What is Condensation?
Answer: A process in which an entering gas is cooled and/or compressed, causing one or more of the gas components to liquefy. Uncondensed gases and liquid condensate leave the condenser as separate streams.
4. Question: What is Critical pressure, Pc?
Answer: The highest pressure at which distinct vapor and liquid phases can coexist for a species.
5. Question: What is Critical temperature, Tc?
Answer: The highest temperature at which distinct vapor and liquid phases can coexist for a species. The critical temperature and pressure, collectively referred to as the critical constants.
6. Question: What is Crystallization?
Answer: A process in which a liquid solution is cooled, or solvent is evaporated, to an extent that solid crystals of solute form. The crystals in the slurry (suspension of solids in a liquid) leaving the crystallizer may subsequently be separated from the liquid in a filter or centrifuge.
7. Question: What is Decanter?
Answer: A device in which two liquid phases or liquid and solid phases separate by gravity.
8. Question: What is Degree of Freedom?
Answer: When applied to a general process, the difference between the number of unknown process variables and the number of equations relating those variables; the number of unknown variables for which values must be specified before the remaining values can be calculated. When applied to a system at equilibrium, the number of intensive system variables for which values must be specified before the remaining values can be calculated. The degree of freedom in the second sense is determined using the Gibbs Phase Rule.
9. Question: What is Dew point (of a gas mixture)?
Answer: The temperature at which the first liquid droplet appears when the mixture is cooled at constant pressure.
10. Question: What is Distillation?
Answer: A process in which a mixture of two or more species is fed to a vertical column that contains either a series of vertically spaced horizontal plates, or solid packing through which fluid can flow. Liquid mixtures of the feed components flow down the column and vapor mixtures flow up. Interphase contact, partial condensation of the vapor, and partial vaporization of the liquid all take place throughout the column. The vapor flowing up the column becomes progressively richer in the more volatile components of the feed, and the liquid flowing down becomes richer in the less volatile components. The vapor leaving the top of the column is condensed: part of the condensate is taken off as the overhead product and the rest is recycled to the reactor as reflux, becoming the liquid stream that flows down the column. The liquid leaving the bottom of the column is partially vaporized: the vapor is recycled to the reactor as boilup, becoming the vapor stream that flows up the column, and the residual liquid is taken off as the bottom product.
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