maria petroni achieved projects
TRANSCRIPT
Achieved projects
Integrated Gasification Combined Cycle (IGCC) power plant (ID-Energy AG)
Study and analyses of spent nuclear fuel using the neutron tomography, NDT method (Goesgen KKG and National Cooperative for the Disposal of Radioactive Waste)
Computed Tomography (CT) performance optimization of the beam hardening artifact (Department of Mechanics and Diagnostics & Devices Testing, and the National Institute of Health of Rome)
IGCC Power Plant
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Clean coal technology is a collection of technologies being developed to mitigate the environmental impact of coal
energy generation. As a result, clean coal technologies are being developed to remove or reduce pollutant emissions
to the atmosphere.
The growing demand for energy, environmental issues related to the fulfillment of the demand and the overall
economic environment makes it necessary to search for new innovative solutions to produce clean energy and low
cost. And one of these is represented by the possible gasification of coal used in Integrated Gasification Combined Cycle Power Plant.
For this project I have:
Designed the process and the system;
Provided different solutions about the components.
The gas combined cycle provides improved power generation efficiency, reduced SOx, NOx, and dust emission per unit of electricity generated (kWh); on the other hands it is structurally and technologically more complex compared to other solutions.
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Chamber
Combustor
Ga
s Tu
rbin
e
Heat
Recovery
Steam
Generator
Syngas Purge Gas
Air
Electricity
Steam
Com
pre
ssor
Water
Exhausted
Gas
Outputs from the Power Plant
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Syngas Purge Gas
Air
Electricity
Steam
Water
Exhausted
Gas Burner M
Ste
am
Tu
rbin
e
Flue gas Heat
Exchanger
My second proposal has been a solution based on a burner for the syngas which converts lean
gas (with a low heat values) into an appreciable source of energy. It is an environment- friendly
solution due to low NOx technology (less than 20mg/m3) with a valuable reduction of costs in
terms of fuel and disposal.
Outputs from the Power Plant
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In addition I have provided an alternative solution based on the Organic Rankine Cycle (ORC) with a
possible supplier.
This cycle uses an organic fluid at high molecular mass. The fluid allows Rankine cycle heat recovery
from lower temperature sources such as: biomass combustion, industrial waste heat, geothermal heat,
solar ponds etc. etc. The low-temperature heat is converted into useful work, that can further be
converted into electricity.
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..….and I have provided information about the right supplier for the main components
of the power generation part: gas turbine – burner – steam turbine – combustor chamber – heat recovery steam generator – current generator and the ORC solution.
Study and analyses of spent nuclear fuel using
the Neutron Tomography (NDT method )
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Non-destructive testing (NDT) is a wide group of analysis techniques used in science and industry to
evaluate the properties of a material, component or system without causing damage.
Among the most common NDT methods we also have Computed Tomography.
Neutron Source
Analysis of four spent fuel samples of Uranium Oxide with different Burn-up (BU):
For medium BU: Alpha, Beta, Gamma sources are the main contributors to the exhausted fuel
radiation;
For high BU: Neutron Tomography is used to evaluate the intensity of neutron sources
Neutron Source Evaluation
CASMO BU Simulation tool
Chemical Analyses
Proteus Reactor Measurements
Neutron Tomography
Measurements
The scope of the
project was to
analyse those
measures and to
provide
recommendations
I have provided:
Data analysis in order to improve the process;
Measurements of Cm 244 on specific samples of spent
nuclear fuel;
Performance calculation;
Presentation of the results in a public speech targeted to
a team of experts.
Thanks to the neutron intensity measures is possible to
validate:
The design of the transport and the storage facilities;
The optimization of radioprotection measures;
The estimation of Burn-up indicators.
CT performance optimization
The polychromatic X-ray source is used universally in computed tomography to obtain adequate
intensity of photons. This kind of source produces artifacts on the reconstructed image.
One of these artifacts is the beam-hardening, which have an influence on the image resolution.
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For this project I have:
Built the Set-up of CT machine;
Studied and analyzed the different methods for the
correction of the beam hardening;
Chosen the best correction method that is the dual
energy;
Implemented the dual energy algorithm using Matlab.
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