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Three - Pass
Fire Tube Boilers |
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Arrangement of the remaining flue gas
passes in the three pass boiler he
fire tube forms the combustion chamber The chosen diameter
makes sure
that an unobjectionable flame can develop and a complete
burn out is
guaranteed The decision whether plane or corrugated fire
tubes are to
be used depends on the diameter and the working pressure
Small steam - generators up to big double-flue boilers are
capable for the
combustion of:
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 Heavy Oil |
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Gas Oil |
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Gas |
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Waste material |
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All parts of boiler plant such as
boiler, pumps, deaerator, chemical, dosing, water
softening, fuel system etc. could be supplied by FAP. |
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Economizer Advantages |
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A lowering of
the flue gas temperature by 100 ºC
will improve the efficient rate by 5%-points.
No falling
below the dew point.
No probes by
condensation.
No special
requirement on the material for flue
gas ducts and chimney.
Sufficient
thermal buoyancy for the flue gases
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Super Heater |
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The
increasing of the steam temperature to a value:
At temperatures
up to 2500C the superheater can be
installed in the front reversing chamber.
For temperature
ranges up to 4000C the superheater
is arranged directly behind the fire-tube in an exterior,
water-cooled reversing chamber.
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THREE PASS FIRE TUBE HOT WATER BOILER |
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| MODEL |
No. OF
BURNER |
BOILER
OUTLET TEMP.
(ºc) |
CAPACITY
(MW) |
DESIGN
PRESS.
(bar) |
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DWH 1 |
ONE |
200 |
1.6 - 9.0 |
MAX.20 |
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DWH 2 |
TWO |
200 |
10.5 -
18.5 |
MAX.20 |
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THREE PASS FIRE TUBE HOT BOILER |
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| MODEL |
No. OF
BURNER |
BOILER
OUTLET TEMP.
(ºc) |
SUPER
HEATER TEMP.(ºc) |
CAPACITY
(T/hr) |
DESIGN
PRESS.
(bar) |
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DWH 1 |
ONE |
SATURATED |
MAX.400 |
2 - 14 |
MAX.20 |
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DWH 2 |
TWO |
SATURATED |
MAX.400 |
16 - 30 |
MAX.20 |
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Control System |
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Operation safety of boilers is secured by
neessary automatic safety components linked into so-called
"safety chain" if the any of elements actuates, i.e.
it transmits impulse for fault, the fuel supply is
interrupted, and the burner is switched-off or it is not
switched-on at start, and a single "fault" is announced as
well as optical or acoustic alarm or both. |
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