What Are Unit Operations Jun 2026

He realized that is distillation, whether you are separating crude oil into gasoline or separating water from ethanol in a vodka still.

Then, Arthur D. Little (a legendary MIT chemist) had a breakthrough. He realized that the physical steps of a process—the crushing, heating, filtering, and drying—follow the same physical laws regardless of what material is being processed.

This is all about how fluids (liquids and gases) move. what are unit operations

These operations use brute mechanical force to change the shape or size of solids, or to separate solids from liquids.

This is the most fundamental operation. Without moving fluids, nothing happens. He realized that is distillation, whether you are

Unlike "unit processes," which involve chemical reactions (like oxidation or polymerization), unit operations focus on physical changes such as separation, phase shifts, or mechanical movement.

In the early 20th century, chemical engineering was just applied chemistry. If you wanted to design a soap factory, you studied soap. If you wanted to design an oil refinery, you studied oil. This was slow, inefficient, and every industry had to reinvent the wheel. He realized that the physical steps of a

Did you enjoy this breakdown? Let me know in the comments what industrial process you’d like explained next!

A chemical plant is just a very, very expensive kitchen that handles massive quantities. Instead of a colander, they use an industrial centrifuge. Instead of a stove, they use a heat exchanger. The tools are bigger, but the principles are identical.

They look completely different. One is a maze of steel and smoke; the other is a clean, cozy taproom. But here is the secret that chemical engineers know:

Complex factories are built by joining several unit operations together in a specific sequence. Common Categories and Examples