Registered Chemical Engineer case studies
Registered Chemical Engineer · Put your knowledge to work in context.
The Chemical Engineer licensure examination is one of the regulated professions administered by the Professional Regulation Commission (PRC) of the Republic of the Philippines. A passing rating, followed by initial registration through the PRC online portal, entitles the candidate to a Professional Identification Card (PIC) and entry into the registry of licensed chemical engineers. The Registered Chemical Engineer case studies are 5 cases and about 3,429 words.
1Benzene–Toluene Column Floods After a Feed Increase
A sieve-tray column separates benzene from toluene at 1 atm (relative volatility 2.4). At design it processes 100 kmol/h of saturated liquid feed containing 45 mol% benzene, producing 98 mol% benzene overhead and 2 mol% in the bottoms with 22 theoretical trays, a reflux ratio of 2.0, and 2.8 MW reboiler duty.
727 words, about 4 min2Hot-Oil Exchanger Cannot Reach the Required Water Outlet
A 1–2 shell-and-tube exchanger with 30 m² of area cools 10 kg/s of hot oil (cp = 2.2 kJ/kg·K) from 200°C to 145.5°C. The cooling water flow is 8.0 kg/s (cp = 4.18 kJ/kg·K), entering at 25°C and leaving at 60.9°C.
640 words, about 3 min3Shortening a Semi-Batch Feed Creates a Runaway Risk
A semi-batch reactor with 8 m³ working volume carries out an exothermic reaction A → B in solution. The feed contains 2500 mol/m³ of A, has density 950 kg/m³ and cp 3.8 kJ/kg·K, and the heat of reaction is −180 kJ/mol.
698 words, about 3 min4Centrifugal Pump Cavitates at Low Tank Level
A centrifugal pump transfers 60 m³/h of 30 wt% NaOH at 60°C from an atmospheric storage tank to a reactor. The tank liquid level is normally 4.0 m above the pump centerline, but it can fall to 2.0 m before the transfer is complete.
694 words, about 3 min5SO2 Scrubber Loses Efficiency as Bed Pressure Drop Rises
A packed-bed scrubber removes SO2 from 12,000 m³/h of air at 40°C and 1 atm using 25 m³/h of recirculated 5 wt% NaOH solution. The column is 1.4 m ID with 5 m of 50-mm plastic pall rings.
670 words, about 3 min