Pilot plant design and engineering

What a pilot is actually for

A pilot plant is not a small commercial plant. It is an instrument. Its job is to measure the things that do not scale linearly: residence time distribution, heat transfer coefficients under real fouling, solids handling, and the behaviour of recycle streams once you close the loop.

The most common failure we see is a pilot built to prove the chemistry again. The chemistry was proven in the lab. What is unproven is everything around it.

Design questions we settle before drawing anything

• Batch or continuous. Continuous pilots cost more and teach more. If the commercial plant is continuous, the pilot generally must be.
• Scale factor. Too small and wall effects dominate; too large and you are funding a demo plant by accident.
• Turndown. A pilot that only runs at one throughput answers one question.
• What gets measured. Instrumentation is chosen from the list of unknowns, not from a standard skid template.
• Recycle. Open-loop pilots hide impurity accumulation, which is the single most common cause of unpleasant surprises at demo scale.

What you receive

Document	Purpose
Process flow diagram with stream table	Mass and energy balance at pilot scale
P&ID	Instrumentation, interlocks, utility tie-ins
Equipment list and datasheets	Fabrication and procurement
Skid general arrangement	Footprint, access, lifting points
Instrument and valve schedule	Control and safety scope
Operating philosophy	Start-up, shutdown, and campaign procedure
Commissioning checklist	Handover and first campaign

Modular and skid-mounted by default

Shop-fabricated skids get commissioned faster, relocate when your lease or funding changes, and let you replace one unit operation without rebuilding the train. For most early-stage clients that flexibility is worth more than the marginal cost.