 |
S-327 - Full Operation |
OPERATION
The operating principle of the air
curtain within an incineration device lies in the introduction
of controlled high velocity air across the upper portion of the
combustion chamber in which clean wood waste is loaded.
The powerful curtain of air created in this process traps
unburned particles under the curtain in the high temperature
zone where temperatures can reach 1,832º F (1,000º C).
The increased combustion time and turbulence results in a
re-burn of the trapped particles or smoke. The escaping
particulates are reduced to near their base elements. The
resulting emissions from a properly operating air curtain burner
will have an opacity rate below 10 percent during most steady
state operations.
 | S-217 Firebox - Full Operation |
For proper operation, the air curtain machine has to be designed
to provide a curtain of air over the fire that has a mass flow
and velocity that are in balance with the potential mass flow
and velocity of the burning wood waste. If the curtain
velocity is too high the box or trench can become over
pressurized and over agitated. The higher pressure will lift the
curtain and cause it to become ineffective. The over
agitation will cause embers and ash to be blown out of the box
or pit past the ineffective curtain. If the mass flow of the
curtain is too low then the unburned particles (smoke) will
penetrate the curtain on the high velocity of the hot gasses
being generated from the burning wood.
"The Wood Waste Is The Fuel"
| 1 | Air curtain
machine manifold and nozzles directing high velocity
air flow into refractory lined fire box or earthen
trench. | 2 | Refractory
lined wall as on the S-Series machines, or earthen
wall as used with the T-Series trench burners. | 3 | Material to be
burned. | 4 | Initial airflow
forms a high velocity “curtain” over fire. | 5 | Continued air
flow over-oxygenates fire keeping temperatures high.
Higher temperatures provide a cleaner and more
complete burn. |
APPLICATION
The ash from typical wood waste is a very
useful soil additive, and as such offers a commodity that can be
marketed to plant nurseries, farms, etc. as a potting soil
additive. This beneficial reuse aspect of the residual ash
may be important to the overall profitability of the Air Burners
System in certain applications. Recycling our resources is not
only socially and politically imperative, but it often reaps the
additional benefit of tax incentives or tax credits. Solid
waste landfills are diminishing rapidly, and permits are
difficult to secure for new sites. The Air Burners System
provides an affordable and environmentally sound alternative to
indiscriminate depositing of wood debris into landfills.
In the past, diseased animal carcasses were usually buried and
forgotten. Little was known about the agents that caused
the deadly diseases that have wiped out many herds of cattle and
entire chicken farms. What is important to understand is
that certain pathogens have been known to survive more than
fifty years in the soil where they have been buried along with
animal carcasses that perished from the disease. The only
known practical approach to the elimination of diseased
carcasses is high temperature incineration. Air Burners
Air Curtain Systems are ideally suited for this task and have
repeatedly been employed for that purpose with the approval of
the US, Canadian and other foreign governments.
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Technical Data
Avian
Influenza, Technical Memorandum
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