Inflection Point Engineering Vessels & Internals Design Guide

Design P&T Selection

Chapter from the Vessels & Internals Design Guide.

NAVIGATION

Design P&T Selection Vessel Sizing Nozzle Sizing Level Instruments
Vacuum Vessels Ceramic Balls Reference Data

Design Pressure & Temperature Selection Guide

Service Type Design Pressure (psig) Design Temp (°F) Material Notes
Atmospheric Distillation 50 650 Carbon Steel / Low Alloy
Vacuum Distillation -8 700 Stainless Steel / Lined
Hydrotreating 500 600 Stainless Steel 316
FCC Regenerator 30 1200 Alloy Steel / Refractory
Alkylation Acid Settler 100 150 Nickel Clad / Lead Lined

Design Rules:

• Min pressure: 20% above operating, or 25 psig minimum

• Min temperature: 25°F above normal operating

• Corrosion allowance: 1/16" to 1/8" per side

• Fatigue consideration: high cycle operations require derating

Source: Vessels_Internals_Design_Guide_v1.xlsx · sheet “Design P&T Selection”