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Introducing the
Biomass Stoker Boiler
The Boiler
Boiler Type
"C" Style, Three Pass, Low Pressure Boiler rated for 30 Psi
water pressure (other pressures available). Three Pass
design provides maximum heat transfer with low stack
temperature. The boiler is designed and constructed to the
A.S.M.E. low-pressure boiler code and meets all the
requirements of the authorities of the Provinces of Canada.
The
Biomass Stoker Boiler's extra large combustion volume assures complete
combustion of solid fuels, clean firing and unrestricted gas
flow. The large firebox with arched crown sheet provides and
exceptionally high proportion of the primary (radiant)
heating surface which is many times more efficient than
secondary (indirect) heating surface. The firebox boilers
are used in automatically fired Solid Fuel systems all over
North America. Supplied boiler horsepower ranges from 50 -
300 BHP (other sizes available).
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Special Boiler features used for Solid
Fuel combustion systems:
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A.S.M.E. Boiler Code Certification
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3-Pass full wet back design for maximum durability and
economy
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Open furnace bottom for stoker installation
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Hinged furnace access door; front, rear or side 16 or 20
inch diameter
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Custom rear flue gas box outlet
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Abundant heat transfer surface per boiler horsepower
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Outstanding inspection access as well as quick and easy
maintenance
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Flushout and inspection openings are 3x4 inch hand-hole
type.
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Covered with mineral insulation and steel jacket
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Stoker Base
The
Chain-grate stoker uses endless chain, which is constructed to
form a support for the fuel bed.
The chain travels over the sprockets mounted at the front of the
stoker. The stoker chain links are cast from a special high heat
resistant cast iron. Chain links are designed to transport most
of the Solid Fuels during the combustion process.
The stoker base is constructed of 0.250" (or thicker) mild
steel. The stoker walls are lined with two layers of High
Temperature insulation (for a total thickness of 4"). The use of
multi-layer insulation assures low stoker surface temperature.
The primary part of the combustion chamber is lined with 9"
firebrick. The remaining part of the combustion chamber is lined
with 9" refractory. The use of firebrick and refractory combined
with high temperature insulation guarantees good heat radiation,
which enhances fuel combustion.
The back of the stoker base is equipped with hinged, large
access door c/w sight glass. The door (lined with refractory)
provides an easy access to the combustion chamber for periodic
inspections. Large (4" diameter) sight glass enables to view
Solid Fuel combustion without opening the back door.
The chain grate is driven by a hydraulic motor, which enables it
to move at a very low speed. The main advantage of the moving
chain grate is that the fuel falls on the chain grate, and
combustion is completed as it moves slowly through the base. The
ash remains on the grate and falls onto the main ash removal
auger as the grate turns around. |
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The Biomass Stoker Boiler
consists of steel
base with factory installed:
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Hi temperature insulation and refractory
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Combustion and over-fire air system
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Automated ash removal
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and Chain-grate
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