Fired Heater

Module from the Heat Exchanger Engineering Curriculum curriculum.

Module 9 - Fired Heater Overview (API 560) · Learning Objectives · 1. Identify box, cabin, vertical cylindrical, and arbor heater types · 2. Size radiant section duty vs convection section economizer · 3. Apply tube skin thermocouple limits and calculated TMT (tube metal T) · 4. Design convection section with extended surface tubes (studded, finned) · 5. Interpret draft profile, O2 trim, combustion efficiency (ASME PTC 4) · Fired Heater Type Selection

Type	Service	Radiant Coil	Max Duty MMBTU/hr	Height	Typical Use
Vertical Cylindrical (VC)	Process fluid heater	Helical or vertical	5-60	40-60 ft	Crude, vis, reboiler
Box (cabin)	Process	Horizontal	30-300	30-50 ft	Reformer feed heater
Arbor (vertical tube)	Heavy oil	Vertical	20-100	50-80 ft	Vis, hot oil
Crude heater	Crude unit	Multi-pass	50-500	40-60 ft	Atmospheric feed
Reformer	SMR	Vertical tubes	100-700	30-50 ft	Hydrogen plants
Pyrolysis	Ethylene	Vertical twin-radiant	100-300	30-50 ft	Olefins

Source: Heat_Exchanger_Engineering_Curriculum_v1.xlsx · Sheet: Fired Heater

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