LPG Burner Setting
LPG Burner Setting
(OP)
Hi Everyone
I came across an issue in which heavy-ends/Oil sediments were found in gas train of an LPG fired burner, used in a drying oven of a Powder coating process. This results in frequent tripping of burner and affects product quality. System details as below
LPG Installation
Vaporizer - 40 Kg/h
with liquid trap
Primary regulator Rego 1588 VN - inlet pr. - 7 bar
Basket type filter - vanaz F0109
Secondary regulator Novacomet BP2303R, inlet pr. - 1.4 bar, Outlet pr. - 100 mbar
Burner - Baltur TBG 45P, 100 - 450 kw, 20 - 360 mbar
Gas Train - Dungs, MB-ZRDLE 407 B01 S20
Servo Control - Siemens SQN72.2A4A20BT
Since oil/heavy-ends is found only after secondary regulator, I feel it is because of incomplete combustion and condensation of LPG. Hence I reduced the LPG flow in gas train and increased the air flow.
Kindly throw some light in sorting this issue.
I came across an issue in which heavy-ends/Oil sediments were found in gas train of an LPG fired burner, used in a drying oven of a Powder coating process. This results in frequent tripping of burner and affects product quality. System details as below
LPG Installation
Vaporizer - 40 Kg/h
with liquid trap
Primary regulator Rego 1588 VN - inlet pr. - 7 bar
Basket type filter - vanaz F0109
Secondary regulator Novacomet BP2303R, inlet pr. - 1.4 bar, Outlet pr. - 100 mbar
Burner - Baltur TBG 45P, 100 - 450 kw, 20 - 360 mbar
Gas Train - Dungs, MB-ZRDLE 407 B01 S20
Servo Control - Siemens SQN72.2A4A20BT
Since oil/heavy-ends is found only after secondary regulator, I feel it is because of incomplete combustion and condensation of LPG. Hence I reduced the LPG flow in gas train and increased the air flow.
Kindly throw some light in sorting this issue.
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.





RE: LPG Burner Setting
RE: LPG Burner Setting
Sounds more like contaminated LPG to me.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: LPG Burner Setting
@LittleInch: P:30 B:70
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
Therefore these must be present in the fuel and then not vaporise when the lpg does. Check the fuel first.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: LPG Burner Setting
On the other hand, being a mechanical engineer, I want to read about each hydrocarbon (methane... pentane, hexane etc.) their properties, which will be a suggested book.
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
RE: LPG Burner Setting
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
RE: LPG Burner Setting
Send a sample out for analysis to see what it is. The black is probably soot from incomplete combustion.
Also get a different supply of fuel, including a new tank.
I see some reports tracing contamination in small installs to incorrect hoses leaching pthalates.
RE: LPG Burner Setting
@3DDave: We have did that too, and the reports are clean. I am thinking to send the sediment for separate analysis, maybe FT-IR, distillation. If you have any idea, for specific parameters to look for during analysis, please suggest.
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
RE: LPG Burner Setting
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
My point is that the oil contaminant may be present in the fuel stream in fairly small amounts, and accumulate in low points over time. I would be looking upstream, e.g. in the basket strainer on primary regulator, in low points along the lpg line, and in the fuel tanks themselves, for contamination.
RE: LPG Burner Setting
RE: LPG Burner Setting
Oswald Vincent M.S Mech. Engg.
Keep Things Simple.
RE: LPG Burner Setting
RE: LPG Burner Setting
Could you put a strainer or similar trap in the low pressure line, upstream of the burner heads to see if you can trap/condense contaminants there before they reach the burners?