CHEN 2001 Lecture Notes - Lecture 9: Flowchart, Molar Mass, Process Variable

• School: UMN
• Department: Chemical Engineering
• Course: CHEN 2001
• Professor: Kechun Zhang

Document Summary

Raw material reactor separator product. Process variables to specify quantitative information on a process flow sheet: base dimensions. Mass: m (kg) length: l (m) time: t (s) temperature: t (k) Amount: n (moles: molar mass: m/n g/gmol kg/kgmol lb/lbmol, mi = nimi; where m = mass and m = molecular weight, # atoms of h in compound i; nhi = hini = hi(mi/mi) Ex1: there are 12 mol glucose; how many g glucose and how many gmol c: mglucose , nc,glucose = For stream: stream composition, mass fraction of i = wi , mole fraction xi , notes where m is the total mass. 3: example (murphy, p. 62): find mole fraction and mass fraction of glucose in mixture of 12g glucose, 3g nacl, and 85g water. Temperature and pressure need to control these to control reaction: t (k or co); c + 273. 15 = k.