Flare
Flare
(OP)
I'm going to visit flare stack unit in a gas plant in another two weeks. My client gave some information that the current flare which was operated since 1992 (without blower) is having black smoke issue.
Can anyone share what can be the possibilities of having black smoke? thanks
Can anyone share what can be the possibilities of having black smoke? thanks





RE: Flare
If the stack mixes air with the flare medium it could be a failed blower. If it's velocity drafted the air inlets could be clogged with debris like bird nests, rat nests, bats, etc. As can be the inlet on a forced draft blower.
If there is an "assist" fuel it could be a valve is not working the fuel is absent so the flare is way under temperature preventing a complete burn.
A change in the ambient should be considered. Could be the flare medium is condensing in the plumbing and piling up somewhere.
A temp sensor could be bad so the flare isn't controlled or augmented correctly.
Of course someone may have "turned a knob" somewhere too.
Be interesting to hear what you find.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Flare
This problem may be made worse if these operational vent streams are high molecular weight.
Would suggest steam or air assist for these normal operating vent streams.
RE: Flare
The reason for the change must first be understood. So check condition of the flare tips and gas composition.