ChE Board case studies
ChE Board · Put your knowledge to work in context.
The Chemical Engineer licensure examination is one of the licensure examinations administered by the Professional Regulation Commission (PRC) of the Philippines for regulated professions. Passing it is the route to registration as a Chemical Engineer and to a Professional Identification Card (PIC) and Certificate of Registration (COR) issued through PRC. The ChE Board case studies are 5 cases and about 5,097 words.
1Debutanizer Flooding After a Throughput Revamp
Your debutanizer was revamped six months ago to raise feed from 85 to 105 kmol/h by adding a fourth feed nozzle and enlarging the reboiler. Since then, operators report that column differential pressure has crept from 0.32 bar at the design case to 0.51 bar today.
1,126 words, about 6 min2Batch Reactor Cooling Failure: How Much Runaway Potential Is Left
Your site runs a 12 m3 jacketed batch reactor making an acrylic copolymer. Monomer is dosed over three hours at 70 C with jacket cooling water at 12 C, and reaction calorimetry on the full charge gives an adiabatic temperature rise of 118 K.
1,143 words, about 6 min3Cooling Water Contamination From a Tube Leak
Six shell-and-tube coolers in parallel cool a 92 wt% toluene stream from 95 C to 40 C on the tube side at 8.5 barg. Cooling water returns at 3.5 barg to a common header feeding one cooling tower.
1,066 words, about 5 min4Pump Cavitation After an Exchanger Bypass
Toluene at 90 C is transferred from a blanketed surge drum at 0.15 barg to a distillation feed drum by a centrifugal pump rated 100 m3/h at 55 m head. The drum liquid level is 4.0 m above the pump centerline.
951 words, about 5 min5PSV Backpressure After a Flare Header Tie-In
A 60 m3 propane bullet with an 18 barg design pressure is protected by a single conventional spring-loaded PSV set at 17.2 barg, sized for an external fire with credit for fireproofing. A new flare header tie-in will raise the built-up backpressure at the valve outlet from 0.35 barg to 2.9 barg.
811 words, about 4 min