Recently, due to the rising of oil prices, interest in FCC Unit (Fluid Catalytic Cracking Unit) energy recycling is increasing. FCC Unit (Fluid Catalytic Cracking Unit) is a mechanical used to convert bunker C oil into high quality gasoline. Pressure vessel of FCC Unit is that refining the crude oil when is operating in high-temperature and high-pressure environment. So it needs analysis of structure carefully. In this paper, FEA (Finite element analysis) of the FCC unit was performed to evaluate its structural stability and weight reduction. The equivalent stress of the FCC unit was investigated and compared against the ASME code design specifications. The area of high stress concentration with maximum stress higher than the prescribed value was analyzed locally to carefully evaluate the stress. Finally, we were reduces the thickness of the CA nozzle in FCC unit, and it was satisfied structural stress.
According to the recent rise in oil prices, interest in FCC Unit (Fluid Catalytic Cracking Unit) energy recycling is increasing. FCC Unit is a facility which refineries low-valued bunker C oil into high-valued gasoline. Pressure vessel that refines crude in FCC Unit needs vary interpretation because it operates in high-temp and press. Even our concern about this FCC Unit is increasing, our experiments about its safety is not enough. In this paper, whether FCC Unit has structural stability or not, we found out FEA(Finite Element) after trying 3D modeling by using FCC Unit’s condition of design and critical stress as a translating data. We conducted our structure prediction of fragile sites. And stress analysis was performed. Finally, we strengthened on the weak point and tried reinterpretation to bring both of simple measurement and increase of structural stability. Data of pressure vessel follows ASME, and we made an assessment through this standard.
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