CHEN 3006 Lecture Notes - Lecture 33: Molality, U.S. Route 3, Control Volume
5 Apr 2015
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3% global energy use (a lot of it is for distilling petroleum products) 10% thermodynamic efficiency probably the oldest chemical technology to exist traced back to egyptions 5000 yrs ago improve longevity of wine by increasing alcohol content typical distaillation column looks like absorption column. Condenser (typically a total condensertake all of vapor and turn it to liquid) Bottoms column filled with structured packing to increase contact area btwn liquid and vapor combines evaporation and absorption gas goes up, liquid goes down now the driving force = the relative vapor and liquid fractions at a particular t. Reflux, r returns to very top of column vapor feed. In design, need to worry about height and diameter of the column (same as absorption) D,g,l - written as molar flow/column area constant molal overflow
