Using an industrial gas burner within a gas train system is about

 Safe startup, controlled operation, and proper shutdown.

1. Understand the Gas Train + Burner Setup

Typical components upstream of the burner:

• Manual shut-off valve

• Gas filter

• Pressure regulator

• Pressure switches (min/max)

• Safety shut-off valves (SSOVs, often double valves)

• Vent valve (if required)

• Flow control valve (butterfly/proportional)

• Burner + ignition system + flame detector

2. Pre-Start Checks (Critical for Safety)

Before operating:

Mechanical & System Checks

• Ensure all valves are in correct position (manual valves open where required)

• Check gas pressure matches design values

• Verify no gas leaks (use gas detector or soap test)

• Confirm filter is clean

• Ensure air supply fan is operational

Electrical & Control Checks

• Power supply ON

• Burner control panel ready (PLC or burner controller)

• Flame detector functional

• Emergency stop reset

3. Start-Up Sequence

(Automatic Burner Operation)

Modern burners follow a controlled ignition sequence:

Step 1: Pre-Purge

• Air fan runs to purge combustion chamber

• Removes any residual gas

• Typically lasts 10–60 seconds

Step 2: Ignition Phase

• Ignition transformer generates spark

• Pilot valve opens (or low-fire gas opens)

• Flame is established

• Step 3: Flame Detection

  • Flame sensor (UV/ionization) confirms flame
  • If no flame → system locks out for safety

  Step 4: Main Gas Valve Opens

  • Main safety valves open
  • Burner transitions to low fire

  Step 5: Modulation (Normal Operation)

  • Burner adjusts gas flow via:
    • Proportional valve OR
    • Butterfly valve + actuator
  • Air/gas ratio controlled for efficient combustion