TEAM X Steady State Data Analysis Distillation Column By: Dr. Jim Henry 7 Oct 2003

Objectives Energy Equation Analysis Steady-state analysis

Distillation Column

Distillation Column Heat IN

Distillation Column Heat Loss, reboiler Heat IN

Distillation Column Vacuum insulated, NO Heat loss Heat Loss, reboiler Heat IN

Distillation Column Heat Loss, feed area Vacuum insulated, NO Heat loss Heat Loss, reboiler Heat IN

Distillation Column Vacuum insulated, NO Heat loss Heat Loss, feed area Vacuum insulated, NO Heat loss Heat Loss, reboiler Heat IN

Distillation Column Heat Loss, reflux area Vacuum insulated, NO Heat loss Heat Loss, feed area Vacuum insulated, NO Heat loss Heat Loss, reboiler Heat IN

Distillation Column Heat out, condenser Heat Loss, reflux area Vacuum insulated, NO Heat loss Heat Loss, feed area Vacuum insulated, NO Heat loss Heat Loss, reboiler Heat IN

Some Data

Energy Equation Data Qin is measured Now we can determine Qloss

Some Data Reboiler, at 75oC has heat loss Trays 12 & higher, insulated and cool, have no heat loss. So Qin = Qloss 200 W = U A DT

Heat Loss A = 2* p *r*l + 2* p *r2 Surface Area (A) = 0.44 m2 found by measuring Reboiler Measure Tboiler and Troom (23 oC) Determine U… the heat transfer coefficient

So Qin = Qloss 200 W = U 0.44 50 = U 22 U = 400/22 = 18 W/m2 oC Some Calcs So Qin = Qloss 200 W = U 0.44 50 = U 22 U = 400/22 = 18 W/m2 oC

Some Data

Some Data Reboiler, at 75oC has heat loss Trays 12 & higher, insulated and cool, have no heat loss. So same as before

Some Data Zoom In

Some Data

Some Data Reboiler, at 85oC has heat loss Feed area, at 68oC Trays higher, insulated, have no heat loss. So Qin = Qloss 400 W = U AB DTB + U AF DTF

Some Calcs So Qin = Qloss 400 W = U 0.44 60 + U .1 45 = U 31 U = 400/31 = 13 W/m2 oC