Direct fired heater of TEG package

[I2P]

Friends,
we have a direct fired heater for the reboiler of our TEG regeneration package. It is a natural draft heater. We have frequent problems of burner lockout/flame out.Since we donot have ne great instrumentation,ie we have no draft guages for the heater, we have since begionning kept the damper fully open. I feel that during windy days we are having excess air inside the firebox and which may be causing a flame lift off in the main burner. Unfortunately we do not have any flue gas analysis provision either online or sampling point through which flue gas composition particularly oxygen can be known. Any methods by which to control the draft so that it is negative enough and gives stable flame operation?

 

[moondog]

What type of controls do you have on the heater?
What type of flame sensor does it have?

 

[whoislee]

How long have this heater been running? When was it last serviced?

I would normally look at the flame nozzles to check if it is choked up with carbon soot.

Increasing the air intake would means burning more fuel to get the same amount of heat energy --- inefficient.

Try low burning rates to clear the soot in the nozzles.

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