Process Design

Use this for “A plant makes 100 kmol/h of product worth $40 per kmol from 105 kmol/h of feed at $25, 8000 h a year. What is its economic potential?”

Use this for “A mixture holds a corrosive acid, mostly water and two close-boiling isomers. Which column comes first?”

Use this for “A pump moves 0.02 m³/s of water against 40 m of head at 70% efficiency. What power does it draw?”

Use this for “A drum must hold 10 minutes of a 0.5 m³/min liquid flow while half full, with L = 3D. Find D and L.”

Use this for “A $1,000,000 plant returns $200,000 a year for 10 years. At 10% interest, what is its NPV and its payback?”

Use this for “A cooling failure happens 0.1 times a year. An alarm (PFD 0.1) and a relief valve (PFD 0.01) protect the reactor. How often does it overpressure?”

Use this for “A control valve sticks open and too much feed reaches the reactor. Which HAZOP guide word is that?”