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Learn · Chemical engineering

Separations and process design

Eight lessons that put a plant together: flash drums and relative volatility, distillation columns and reflux, absorption, extraction, crystallization and membranes, flowsheets and P&IDs, process control, process safety and HAZOP, and whether the plant pays.

Part of the Chemical engineer path.

Take first: Material and energy balances, Reaction engineering.

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How it works

Each lesson is a short read with worked examples, then a few practice questions. Some ask you to work out a number (grams, moles, kelvin, kilowatts), some have you pick an answer, and some have you tap steps into the right order. Keep a calculator handy; the question says how to round. You can try again as often as you like; after two misses there’s a button to show the answer. Where a lesson has one, the Particle Lab experiment lets you watch the idea happen with atoms and molecules.

What do I need to know first?

The other chemical engineering courses help. The first lesson recaps the vapor pressure, balances, reactors and costs the rest uses.

The other chemistry and chemical engineering courses

Where is my progress saved? In this browser, like the rest of the site. Nothing to sign up for.

For learning only. It isn’t lab safety training, an accredited qualification or engineering advice: real lab work and plant design follow your organization’s safety procedures, the safety data sheets and the codes that apply where you are. Worked numbers use rounded values and simple models, so check real designs against proper data.