An Italian researcher is looking for industrial or public research partners to develop an innovative system for the simultaneous production of electricity, hydrogen and oxygen
An Italian private researcher designed and patented an innovative system to optimize the use of gas turbine to produce electricity, or pure hydrogen and oxygen. The researcher is looking for companies active in gas turbine production or hydrogen and oxygen production, interested in testing and engineering the innovation under manufacturing agreement or for research centers specialized in energy efficiency willing to further test and develop the idea under a research cooperation agreement.
Companies active in gas turbine production or hydrogen and oxygen production for the engineering design and industrialization of the system under manufacturing agreement. Public or private research center active in energy efficiency field for verification and publication of research under a research cooperation agreement.
An Italian researcher designed and patented an innovative system: core innovation is based on the idea to use the heat contained in the exhaust gases of a modified gas turbine to obtain thermal dissociation of water through the sulfur-iodine cycle and to produce oxygen and hydrogen gaseous. This combined-cycle gas-turbine / steam-turbine modified system enables the production of electricity with greater efficiency than currently available and drastically reduces CO2 emissions. With the European project H2-IGCC (Combined Cycles Gasification Plants), a consortium was set up to provide technical solutions that allow the highly efficient use of the partially hydrogen-powered gas turbine. The study and demonstration of feasibility were planned by 2010, while the organization for commercial distribution is scheduled for 2020. The project has brought significant results in the material selection process and will contribute in the future to the mixing of fuels. The main challenges to face are the increase in water vapor and the corrosion at high temperatures caused by the enrichment of the fuel with hydrogen. With the development of the life expectancy of the NDE methods, the project substantially reduced the risks assumed by the IGCC gas turbine design process. However, this project does not refer to hydrogen procurement systems. Given the good results offered by the project and in view of the fact that at this time the cost of hydrogen is very high, it is proposed to use the same gas turbine exhaust to produce hydrogen through the thermal dissociation of water in a cycle that does not produce substances harmful to the environment and has lower costs than those of fossil fuels. The researcher developed a study for the production of hydrogen through thermal dissociation of water using the residual heat in the fumes at the gas turbines exhaust. In this study a continuous regeneration of the compressed air is foreseen, an increase in the mass flow of the fumes, a continuous thermal regeneration in the turbine, a higher temperature at the turbine exhaust that allows their use for thermal dissociation of the water. All these improvements in the thermal cycle lead to an increase in overall plant yield and a reduction in CO2 emissions. The use of the hydrogen produced in the same plant considerably increases its efficiency and drastically reduces CO2 emissions. Applications: The system can be used to produce electricity or to sell pure hydrogen and oxygen. The thermal balance of the proposed system is shown as an annex where the thermal exchanges of the cycle can occur. In it the quantity of thermal energy used and the electrical energy obtained can be numerically verified. Methane has been defined as the main fuel and the reduction in CO2 emissions is documented with the use in the same gas turbine of the produced hydrogen. The plant performances can be calculated numerically from the balance sheet or evaluated with the attached compression and expansion diagrams. It is possible to see in each point of the compressor and the turbine the thermal state of the fluid and the effect obtained with the injection of water for cooling the compressed air and the effect of fuel / hydrogen injection into the turbine for increase the specific volume of the fumes and therefore the efficiency of the turbine. The attached figure 3 shows the vapor expansion in the water vapor turbine, highlighting its efficiency. At present the idea is at the level of a theoretical proposal with a scientific demonstration of its feasibility. However, it should be remembered that to date there are no studies and/or projects for the use of turbine exhaust gases to produce hydrogen and oxygen. The researcher would like to find partners able to test and manufacture the system or research centers interested in further developing the idea under a research cooperation agreement.
Advantages and innovations
Innovation: - The use of gas turbine exhaust gases to produce hydrogen has never been studied and potential applications are promising Advantages: - The plant is competitive compared to current systems because it offers economic advantages for greater efficiency in terms of electricity production and at the same time offers environmental advantages because it allows the hydrogen and oxygen production. - The use of hydrogen produced for giving partial energy to the system produces an effect of improvement in terms of plant efficiency and reduction of emissions that cause the greenhouse effect and therefore global warming. - As shown in the attached thermal report, with a 200MW gas turbine in combined cycle, if the using fuels are the hydrogen produced and methane, in numerical terms the system allows producing electricity with a specific consumption of 68% and with CO2 emissions of 6 t/h. - Clearly competitive values compared to the specific consumption of 53% of the gas turbine powered with methane only and with emissions of 7.7 t/h of CO2. The parameters described above highlight the advantages of using the modified system that favors the drastic reduction of greenhouse gas emissions and produces economic benefits for the commercialization of electric energy, hydrogen and oxygen, for factories that produce gas turbines or water demineralisation plants.
Intellectual Property Rights (IPR)
Patent(s) applied for but not yet granted
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