chapt 18 case process design

# chapt 18 case process design - 6,620 Net Weekly Profit \$...

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Chapter 18 Chapter 18 Multicriteria Decision Problems Case Problem: Process Design The optimal solution is to operate the heater at a temperature of 800°, use catalyst C2 for the reactor, and purchase separator S1. This results in a weekly profit of \$9,580 calculated as follows. Weekly revenue (2700 lbs. x \$6.00) \$16,200 Weekly costs Payback on heater (12,000/100) 120 Payback on reactor ( 50,000/100) 500 Payback on separator (20,000/100) 200 Operate heater 380 Operate reactor 650 Operate separator (2700 x 0.10) 270 Raw material (4500 x 1.00) 4,500
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Unformatted text preview: 6,620 Net Weekly Profit \$ 9,580 Calculations Let stage 1 be separation, stage 2 reactor, and stage 3 heating. Stage 1 d 1 x 1 s 1 s 2 * 1 d f 1 ( d 1 ) 900 lb. \$5,110 \$5,170 s 2 \$5,170 1800 lb. 10,420 10,390 s 1 10,420 2700 lb. 15,730 15,610 s 1 15,730 Stage 2 d 2 x 2 c 1 c 2 * 2 d f 2 ( d 2 ) x 1 4500 lb., 700 \$4,220 \$9,270 c 2 \$9,270 1800 4500 lb., 800 9,470 14,580 c 1 14,580 2700 Stage 3 d 3 x 3 700 800 * 3 d f 3 ( d 3 ) x 1 4500 lb. \$4,370 \$9,580 800 \$9,580 (4500, 800 ) CP - 78...
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## This note was uploaded on 04/20/2010 for the course IE ie200 taught by Professor . during the Spring '10 term at 카이스트, 한국과학기술원.

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