Interested to Buy Any Domain ? << Click Here >> for more details...
What are the causes of boiler backfire and steps in how to
prevent it from happening?
- 4 Answers
- 58321 Views
- ABC Inc, RRB, Siemens, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / viraf b. karanjawala
the probable causes of boiler backfire are 1) outlet damper
partially/fully closed, 2) Improper tuning of the burner 3)
accumulation of combustible gases in pockets with in the
furnace 4) accumulation of unburnt fuel left in the furnace
5) purging time before and after burner shut off not enough
i.e. too short, 6) vol of the gases against vol provided by
the boiler manufacturer
| Is This Answer Correct ? | 53 Yes | 7 No |
Answer / jose thomas
1. Unburnt fuel leftover in the furnace during previous
operation.
2. Fuel leak to the furnace before ignition.
3. Presence of flue gases in furnace.
4. Pre-purge and post-purge timings are not enough.
5. Incorrect burner settings.
6. Improper ratio of fuel and air volume.
7. Burner malfunctioning /Controller malfunctioning.
8. Outlet damper less opened.
| Is This Answer Correct ? | 35 Yes | 0 No |
Answer / m.abbas
1-Unburnt fuel accumulation in the furnace
2-Repeated unsuccessful strat attempts for boiler firing
3-Burner malfunction and air fuel ratio disturbance
4-Inadequate pre and post purging
5-Flue gases outlet damper malfunction
| Is This Answer Correct ? | 27 Yes | 3 No |
Answer / salai jeyaveeran
the basic thing for backfire in a boiler is occurance of
positive pressure in a furnace (or) boiler this can be
happend due to
high flow from FD
partial open in ID damper
low RPM of ID fan
punture of tubes
| Is This Answer Correct ? | 19 Yes | 7 No |
wt is MAG weld? wr it is specifically used and reason for it .
what is rolling margin?( from view of machining process ) explain briefly
how we relate superheating & subcooling with chiller load
What is extrued aluminum?
I heard that the acetylene cylinder pressure can't be brought down below bar while using for welding activity. Is it true. . If so pl explain why
What are the dimensionless parameters used in forced convection?
what company need you
Why entropy change for a reversible adiabatic process is zero ?
in a cylinder filled with any gas,if we attach two pressure gauges one at bottom and one is at top. will both pressure gauges have same reading???
what is birnollei theorm
What is flash point
HOW MANY TYPES OF DRILLING MACHINE?
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
