The Modul-Pak®
boiler is a hybrid design that combines the benefits of a
watertube furnace and a multipass firetube boiler. The results
are a value engineered modular package boiler that offers
unique advantages for solid fuel firing.
The McBurney 2-drum bottom-supported
boiler is a 2-gas pass balanced draft, natural circulation
boiler design. The boiler is designed for medium to large
industrial boiler applications.
The 2-drum top-supported single
gas pass balanced draft, natural circulation boiler is designed
with a water-cooled membrane wall furnace. The boiler is designed
for large industrial boiler applications.
MODUL-PAK®
The upper furnace is an extended
watertube furnace which offers water cooling of the primary
combustion chamber which results in cooling the flame temperature
prior to entering the multipass firetube boiler.
The Modul-Pak®
boiler is offered in a wide variety of fuel firing combinations.
Modul-Pak firing systems include gas/oil burners, McBurney
air or water-cooled stationary grates, and continuous ash
discharge stokers including air and water-cooled vibrating
grates.
Modul-Pak®
Design Parameters
•Steam capacities
10,000
LB/hr to 55, 000 lb/hr
(4.5 t/hr to 25 t/hr)
The furnace
and the boiler are designed for the specific requirements
of the fuels to be fired and boiler operating conditions.
The furnaces are conservatively sized to improve fuel combustion
and burnout, reduce particulate emissions carryover, and provide
low furnace volume heat release rates.
By having two
gas passes through the boiler bank, the boiler exit gas temperature
is lower than a top-supported single gas pass boiler design.
This results in a smaller tubular air heater and/or economizer.
For superheated steam applications,
a radiant and/or convective pendant type superheater can be
provided.
The 2-drum bottom-supported boiler is offered
in a wide variety of fuel firing combinations including gas/oil
burners, solid fuel suspension burners (for sander-dust),
and continuous ash discharge stokers including traveling grate,
air and water-cooled vibrating grates.
2-Drum
Bottom Supported Boiler Design Parameters
•Steam capacities
40,000
LB/hr to 200, 000 lb/hr
(18 t/hr to 82 t/hr)
The furnace and boiler dimensions including
height, width and depth and drum centers are selected and
optimized for the specific requirements of the fuels to be
fired and the boiler operating conditions. The furnaces are
conservatively sized to improve fuel combustion and burnout,
reduce particulate emissions carryover, and provide low furnace
volume heat release rates.
Radiant/convective superheaters are designed
to provide the required team outlet temperature over the required
load range. The superheaters are a pendant design located
prior to the convection bank.
The 2-drum top-supported boiler is offered in
a wide variety of fuel firing combinations including gas/oil
burners, solid fuel suspension burners (for rice hulls and
sanderdust), and continuous ash discharge stokers including
traveling grate, air and water-cooled vibrating grates.
2-Drum
Top Supported Boiler
Parameters
Design Parameters
•Steam capacities
150,000
LB/hr to 600, 000 lb/hr
(68t/hr to 272 t/hr)
