Analysis of Effects of Quench Nozzle on Pressure Vessel Design - A Review

This paper gives the effects of quench nozzle on the pressure vessel design. Generally in Pressure Vessels, Nozzles are required for Inlet and Outlet Purposes. These Nozzle if present on peak of the dish end do not disturb the symmetry of the Vessel. However sometimes process requirements dictate that some quench nozzles be placed on the periphery of the Pressure Vessel. These Nozzles disturb the symmetry of the Vessel and need to analyzed in FEA to understand effects on Stress attributes of the Vessel. Different models of pressure vessel are prepared by varying the number of nozzles on the periphery and angle between the nozzles. Structural Analysis have to conduct for the pressure vessel when both the Nozzles are present and understand the effect of combination and determine the stress distribution. Conduction a Study analysis, on the effects of increasing the number of Nozzles on the periphery at every 45 degrees until full symmetry is achieved. After analyzing the existing pressure vessel nozzle assembly for seven different conditions, the safe stress value are obtained for all conditions which is less than 50 MPa. The minimum deformation is obtained for 4 Nozzles-90degrees type of pressure vessel combination and also the maximum stress for that is within the acceptable limits.