ENITEH - MODULAR BIOMASS COGENERATION PLANT is
based on the classical gas - turbine process shown
in diagram below. The classical gas - turbine process
is following: ambient air is compressed by air compressor
(P1, t1 >>> P2, t2`) heated up in heat exchanger -
REGENERATOR by heat available in exhaust gas
of the turbine (t2` >>> t2``) then introduced in the
combustion chamber where it combusts with fuel (oil
or gas) releasing combustion gas (t2`` >>> t3). Combustion
gas is going into the gas turbine where they expand
(P3, t3 >>> Pit, t4`) and release mechanical energy
for driving the compressor and electric generator
- producing electric energy.After leaving the turbine
exhaust gas are cooled down in the REGENERATOR (t4`
>>> t4``) by heating the compressed air from the compressor
which saves fuel and increases overall efficiency.
The main difference between the classical
gas - turbine process and biomass firing gas turbine
it is necessary to introduce additional equipment for
combustion of biomass whose thermal energy is directly
or indirectly introduced into the turbine. For direct
introduction of thermal energy (biomass fuel) - the
classical combustion chamber is modified to accommodate
additional furnace in which biomass is used as a fuel,
even filtered combustion gas has a small amount of ash
which builds up on the turbine blades and corrodes them
which can cause out of balance and destruction of the
turbine.In order to avoid the downfall of the direct
method - ENITEH - BIOMASS COGENERATION PLANT
uses INDIRECT SYSTEM OF INTRODUCING THERMAL BIOMASS
ENERGY. It uses the thermal energy from biomass
in order to heat air by heat exchanger before entering
the turbine which secures that the turbine works with
clean air and creates ideal working conditions of the
gas turbine without the danger of flying particles.
Because in this case gas turbine operating
is not in function of fuel charactersistics - implementation
adequate combustion system of air heater -ENITEH
SYSTEM can be used for any other fuel (coal and
waste oil and gas fuels). Further more air as a media
for hot air gas turbines does not have any cost related
to optioning and/or conditioning of a working fluid
(raw water treatment or thermal oil replacement) and
does not use any water. ENITEH SYSTEM also has
other preference to classic cogeneration systems ( better
electric efficiency and higher temperature exhaust medium
from turbine and more lower invest cost of cogeneration
plant). - see diagram.
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