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Furnace Tutorial

Furnace Simulation

Envision Systems Furnace Tutorial
Copyright © 2009 by EnVision Systems Inc. All rights reserved worldwide.

Furnace Tutorial

The interactive Furnace tutorial provides an overview, fundamental principles, control principles and operating principles for a heating furnace, using voice, video, animation and graphics. The topics covered are:


  • Purpose of Furnace
  • Applications of Furnace
  • Types of Furnace

Furnace System   

  • Introduction
  • Combustion Device    
  • Heater Tubes
  • Heat Transfer Sections
  • Draft Device and Stack   

Furnace Performance

  • Introduction    
  • Combustion Air
  • Burner
  • Damper and Air Registers
  • Fuel Temperature and Oil to Steam Ratio    
  • Fuel Composition   

Pre-Startup Operation

  • Inspection of Furnace    
  • Inspection of Associated Lines
  • Inspection of Rotational Equipment
  • Preparation of Fuel System   

Startup Operation

  • Introduction of Process Fluid  
  • Damper and Air Registers
  • Purging
  • Burner Ignition
  • Stabilization   

Shutdown Operation

  • Burner Shutdown
  • Pilot Burner Shutdown
  • Post Shutdown

Emergency Shutdown Operation

  • Introduction    
  • Leakage of Process Fluid
  • Leak in Economizer/Damage to Structure
  • Malfunction of External Equipment
  • Flame-Out of All Burners

Key Monitoring Parameters

  • Introduction    
  • Flame Color
  • Miscellaneous

Envision Systems Furnace Simulation

Copyright © 2009 by EnVision Systems Inc. All rights reserved worldwide.

Furnace Simulation

The Furnace simulation is based upon a rigorous and high-fidelity mathematical process model that provides a realistic dynamic response for a heating furnace.

Process Overview:

The simulated furnace unit is a typical natural draft furnace widely used in oil refineries and petrochemical plants.

Fuel oil or fuel gas is burned with air in 10 floor-mounted burners. The hot flue gas heats the process feed flowing through the heater tubes in the radiation and convection sections. Recoverable heat from the flue gas is further removed in the superheater section before the flue gas leaves the furnace through the stack.


Major Operations for Trainee Practice:

  • Startup and Shutdown Operations

  • Normal Operations
  • Emergency Shutdown Operations
  • Troubleshooting Equipment, Instrument and Control Valve Malfunctions
  • Malfunction Recovery Actions


Simulation Features:

  • Burner Flame Out and Unstable Flame Conditions
  • Variable Fuel Characteristics and Heating Values
  • Detailed Radiation and Convection Section Heat Transfer
  • Metal Temperature Calculation and Hot Spot Identification
  • Interlock/Safeguard System
  • Plant Alert and Monitor
    • High Coil Metal Temperature
    • Explosive Situation
    • Black Smoke in Stack
    • Abnormal Ignition
  • Equipment Details
  • Stoichiometric Combustion Model
  • Dynamic Display of Flame Color and Length
  • Simulation of Tube Coking and Leaks




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