Answer / abdul hameed c

drum level control system, Master pressure control system,
de aerator level control system r imp closed loops

Answer / s. kanniyappan

The following are the closed loops used in boiler...
1) Three Element Drum Level Control
2) Super Heater Steam Temperature Control
3) Deaerator Level Control
4) Deaerator Pressure Control
5) Soot Blower Pressure Control
6) Soot Blower Temperature Control

Answer / sridhar

In various types of boiler having differnt types of cotrol
loops

1.Steam drum level control loops(3E and 1E) with
compensated drum level
2.Main steam temp control loops
3.O2 trimming control loops
4.Furnace draft control loops
5.Fuel feeding + wind box air control loops
6.dearator pressure and level control loops
7.Soot blower control loops

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