FEA Analysis Results - Refractory Lined Autoclave
FE Analysis Results of Autoclave

We performed a finite element analysis of a refractory lined autoclave, for use in the chemical industry.

The composite design of the vessel includes refractory brick, mortar, membrane system and steel shell. The vessel is approximately 83 feet long and outer diameter of 16 feet. Inside the steel shell are three layers of refractory brick. Between the steel shell and outermost brick contains an elastomeric membrane, intended to accommodate geometric variations, as well as brick-to-shell differential thermal expansion.

The vessel is divided into a number of compartments, each with an associated agitator. The important parameters in the design of the autoclave are temperature and stress. Each material of construction has unique properties with respect to temperature. Finite element analysis was used to determine structural integrity of the vessel under various operating conditions.


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Tom O’Donnell, PE
Publications – Heat Exchangers, Pressure Vessels, Weld Applications, Fatigue, Elevated Temperature
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