Individual skids can contain complete process systems and multiple process skids can be combined to create larger process systems or entire portable plants.
They are sometimes called “a system in a box.” An example of a multi-skid process system might include a raw materials skid, a utilities skid and a processing unit which work in tandem.
Process skids are considered an alternative to traditional stick-built construction where process system parts are shipped individually and installed incrementally at the manufacturing site.
[1] They provide the advantage of parallel construction, where process systems are built off-site in a fabrication facility while civil site upgrades are completed at the plant site simultaneously.
If individual process parts are large and cannot reasonably be contained within the frame of a modular process skid, traditional construction methods are preferred.