AMIE Section B Chemical case studies
AMIE Section B Chemical · Put your knowledge to work in context.
AMIE Section B in Chemical Engineering is the second, specialisation stage of the Institution of Engineers (India) examinations, taken by candidates who have cleared the Section A common foundation and want an engineering qualification in chemical engineering. It suits working plant engineers, diploma holders upgrading their credentials, and graduates from related science backgrounds moving into process industries. The AMIE Section B Chemical case studies are 5 cases and about 2,172 words.
1Reactor Runaway After Cooling Water Fouling
A 10 m³ stirred batch reactor runs a first-order exothermic reaction (ΔH = -180 kJ/mol, Ea = 95 kJ/mol, A = 4.2×10^11 s⁻¹) at 150 °C using jacket cooling water at 25 °C. Over six weeks the jacket-side fouling factor has degraded from 5000 to 900 W/m²·K.
477 words, about 2 min2Distillation Column Flooding After Reboiler Retube
A sieve-tray column separating methanol/water at 1 atm has 30 trays, 0.6 m tray spacing, and a design vapor load of 1.8 kg/s. After a reboiler retube, operators report the column cannot reach overhead purity: the top temperature rises from 65 °C to 72 °C, the pressure drop across the column increases from 8 kPa to 14 kPa, and the reboiler duty is at its maximum.
447 words, about 2 min3Pump Cavitation in a Hot Oil Transfer Loop
A centrifugal pump transfers a hot hydrocarbon (vapor pressure 180 kPa at 140 °C, density 720 kg/m³) from a surge drum at 1.2 bar absolute to a fired heater. The pump is rated at 45 m³/h and 60 m head.
470 words, about 2 min4Shell-and-Tube Exchanger Tube Failure Under Thermal Cycling
A fixed-tubesheet shell-and-tube exchanger (316L tubes, 25 mm OD, 2 mm wall, 6 m long, 400 tubes) heats a process stream from 80 to 140 °C using steam at 180 °C on the shell side. After 14 months, several tubes leak at the tubesheet joint.
377 words, about 2 min5Biological Wastewater Treatment Upset From Shock Load
An activated sludge plant treats 5000 m³/d of petrochemical wastewater with a design influent COD of 1200 mg/L and a 6-hour hydraulic retention time in the aeration basin (1250 m³). Mixed liquor suspended solids are maintained at 3500 mg/L.
401 words, about 2 min