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The Zilkha Biomass Unit
generates electrical and thermal energy by burning biomass produced
as byproducts of the wood processing industry. The unit itself is
simple and efficient, comprised of a patented pressurized combustor,
which generates hot, high-pressure gases that in turn pass through
a cyclonic separator into a gas turbine, transforming biomass into electricity
and process heat at significantly lower costs than you are currently
paying.
The Zilkha Biomass Unit may be designed in different configurations
to produce from 1 to 10 megawatts of electrical power, which can either
be used on-site to serve the specific electrical needs of the host
facility or sold to a local utility or neighboring facility. Larger facilities
can be served by installing multiple units in tandem.
In addition to electricity, the high temperature (approximately 1000°F)
gases exhausted from the turbine can be used directly as a source of
thermal energy for production processes such as drying. This exhaust
heat can also be fed into a waste heat recovery steam generator or
your existing boiler to produce steam for process applications, to
generate more electricity by using a conventional steam turbine, to distill
potable water, or to run chiller applications.
In
order to use solid fuels in a direct-fired gas turbine configuration,
Zilkha Biomass Energy has designed, developed, and tested a pressurized
external biomass combustor—not directly attached to the gas turbine—capable
of operating at the temperature and pressure levels required by gas
turbines. This patented combustor has been enhanced with a unique valve
apparatus used to feed solid fuels from atmospheric pressure into a
pressurized unit.
The Zilkha Biomass Unit also incorporates a proprietary cyclonic separation system
intended to reduce particulate matter entrained in the combustion gas stream
to a level acceptable for extended gas turbine operation. A computerized control
system with internet accessibility has been designed to provide the Zilkha Biomass
Unit with state-of-the-art management, dual fuel capability, high-speed data
logging, and instantaneous shutdown capability from both local and remote locations.
: : Click to enlarge
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- Ambient air is pressurized in the gas turbine compressor section to
provide air for combustion.
- Small dry particles of biomass are fed into a hopper and mixed with
the compressed air.
- The combustor burns the mixture of biomass and compressed air and produces
hot gases.
- The combustion gases are cleaned using a cyclonic filter before they
are ducted to the gas turbine hot section.
- The gas turbine hot section drives the generator.
Exhaust gases (approx. 1000°F) can be used for thermal applications
or to produce potable water.
The generator creates electricity for use by the host facility and/or
to sell to a utility.
The Zilkha Biomass Unit can be installed in a variety of sizes, depending
on the host’s electricity and thermal requirements, as well as fuel
availability. The base Zilkha Biomass Unit of 1.5 MW has the following
nominal specifications:
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