Chemical Engineering May 2013 - 43

Feature Report
A-1
Measure combustion air, in case of low
combustion air, increase excess air amount.
Is your problem solved?
See also: How to adjust draft
and excess air? (Reference 1)
No
Go to Point T
in Figure 8
Yes
Is burner tip
damaged?
No
Go to Point BT
in Figure 9
Yes
Is burner tile
damaged?
No
Seek
engineering
consultancy
Figure 3. Troubleshooting
algorithm for unsteady flame
pattern (Part 1)
Yes
Yes
Measure combustion air, in case of low combustion air,
increase excess air amount.
Caution: Reduce fuel flow before increasing air flow,
danger of explosion or flame flashback exists.
Is your problem solved?
See also: How to adjust draft and excess air?
(Reference 1)
Yes
No
Measure combustion air, in case
of low draft, increase draft amount.
Is your problem solved?
See also:How to adjust draft
and excess air?(Reference 1)
End troubleshooting
procedure
No
Seek
engineering
consultancy
Measure fired heaters draft and excess air,
in case of low excess air and low draft,
adjust damper and registers.
Yes
Is your problem solved?
See also: How to adjust draft
and excess air? (Reference 1)
No
Specify your problem
I
I- Erratic flame pattern
II- Pulsating flame
III- Loose or hazy flame pattern
II
III
Check burners fuel pressure,
in case of low pressure,
adjust fuel pressure if possible.
Is your problem solved?
No
Yes
A-2
Figure 4. Troubleshooting
algorithm for unsteady flame
pattern (Part 2)
Specify your problem
I
I- Cloudy flame
II- Non definitive flame shape
II
Yes
Specify your fuel type:
1
1- Gaseous fuel
2- Fuel oil or
Combination firing
Low air-to-fuel ratio.
Adjust fuel pressure
and air flow by adjusting
damper and
burner registers.
Is your problem solved?
See also: How to adjust
draft and excess air?
(Reference 1)
Yes
Seek
engineering
consultancy
No
Is your problem solved?
See also: How to adjust draft
and excess air? (Reference 1)
Yes
End troubleshooting
procedure
No
Seek
engineering
consultancy
Too much atomizing steam,
adjust steam pressure in
accordance to fuel oil pressure.
No
Is your problem solved?
No
Low air-to-fuel ratio. Adjust fuel
pressure and air flow by
adjusting damper and
burner registers.
Yes
Measure fired heaters draft and
excess air, in case of improper
excess air or draft, adjust damper
and registers.
Is your problem solved?
See also: How to adjust draft
and excess air?
(Reference 1)
Go to Point T
in Figure 8
Yes
No
2
Check burner fuel pressure, in case
of high pressure, adjust fuel pressure
if possible.
Is your problem solved?
No
Yes
Is burner tip
damaged?
ChemiCal engineering www.Che.Com may 2013 41

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Chemical Engineering May 2013

Table of Contents for the Digital Edition of Chemical Engineering May 2013

Contents
Chemical Engineering May 2013 - Cover1
Chemical Engineering May 2013 - Cover2
Chemical Engineering May 2013 - Contents
Chemical Engineering May 2013 - 2
Chemical Engineering May 2013 - 3
Chemical Engineering May 2013 - 4
Chemical Engineering May 2013 - 5
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Chemical Engineering May 2013 - Cover3
Chemical Engineering May 2013 - Cover4
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