In a thermal power plant ID Fans running with full load but boiler load is only

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In a thermal power plant ID Fans running with full load but
boiler load is only 80 % give reason ?

Question Posted / mranjan.power@gmail.com

9 Answers
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In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / lalitshukla

there are many reason for that.
1. furnace or any duct of flue gas leakage.
2.deposition on super heater which clog the passage of flue gas
3.density of fuel below required density of boiler fuel

Is This Answer Correct ?

22 Yes

3 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / randhir singh yadav

There will be soot deposits on outer surface of boiler tube

Is This Answer Correct ?

17 Yes

6 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / mohamed elnakib

it is due to the air preheater being clogged increasing the
load of the ID fans due to the bad suction and this clogging
is mostly due to the baskets being melted due to the
formation of the ACIDS from the exhaust gases and the dew
point effect .

this is the only logical reason for why the ID fan is 100%
loaded while the boiler is not .

Is This Answer Correct ?

12 Yes

2 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / randhir singh yadav

May be...
1.APH tube leakage
2.Boiler ducting leakage

Is This Answer Correct ?

11 Yes

2 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / vinod agrawal

May be boiler tube leakage

Is This Answer Correct ?

6 Yes

3 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / y v subba rao

If the moisture content in fuel is more than designed fuel, id fans has to run at full rpm to sent out the additional water vapor produced from the additional moisture. In fact total flue gas quantity was increased

Is This Answer Correct ?

3 Yes

0 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / ns satyaraj

Provided Id inlet damper is fully opened main reasons are
1 more gases are being handled . Happens when due to infiltration of external air into ducting thru leakages
Fluegas path are clogged at some place, such as at APH, superheater, economiser

Is This Answer Correct ?

0 Yes

0 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / a k handa

Coal feeding may not be as per the required load.

Is This Answer Correct ?

7 Yes

8 No

In a thermal power plant ID Fans running with full load but boiler load is only 80 % give reason ?..

Answer / alan

the IDF inlet damper may be stocked to fully open.