87,000 research outputs found
What do you mean by ‘mobile’? Multi-applicant inventors in the European Biotechnology Industry
No full textNo abstract availabl
Developing Competitive Industries and Firms in Global Markets: An Examination of the Experience of Successful Economies
No full textDiscussion of experiences of various countries in achieving competitiveness and growt
Sul rumore prodotto dai forni di raffineria e sua attenuazione
No full textQuaderno CSEI, febbraio 198
Energy recovery of blast-furnace gas coke. The importance of a correct regulation system
No full textUSE OF GASOLINE-ETHANOL MIXTURES WITH A HIGH RATIO OF ALCOHOL IN THE INTERNAL COMBUSTION ENGINE.
No full textEnergy recovery of blast-furnace gas coke. The importance of a correct regulation system
No full textThe present work deals with the regulation system of a plant recovering the energy of blast-furnace gas coke residual pressure. Such plant is provided by a turbogenerator which produces electric energy expanding the gas coke up to the mill pipe network pressure vallue. Before intervention the regulation apparatus consisted of an automatic vane orientation system of a turbine stator and a throttle valve. Once the system has become operative, the regulation set seemed to be inadequate showing a significant reduction in energy recovery due to the variation of the gas coke characteristics, compared to the original engineering specifications. A mathematical model for the plant simulation has been developed throughly the regulation system static and dynamic responses. This simulation together with a series of experimental tests indicated the causes of the operation problems in the original regulation system. On the base of the response times of the old regulation system, a valve with reduced intervention inertia has been introduced. The regulation logic was also modified: the valve interventions were directly linked to the pressure variations recorded at the blast furnace top, and no longer to the opening variation of the turbine automatic system. A more rational use of the plant components and its control system, together with and increase of the electric energy production have been the final results
Energy recovery of blast-furnace gas coke: the importance of a correct regulation system
No full textThe present work deals with the regulation system of a plant recovering the energy of blast-furnace gas coke residual pressure. Such a plant is equipped with a turbogenerator, which produces electric energy, expanding the gas coke up to the mill pipe network pressure value. Before revamping, the regulation system consisted of an automatic nozzle control of a turbine stator and a throttle valve. Once the system became operative, the regulation system seemed to be inadequate because it caused a significant reduction in energy recovery due to the variation of the gas coke characteristics, compared to the original engineering specifications. A mathematical model for the plant simulation has been developed through the regulation system static and dynamic responses. This simulation, together with a series of experimental tests, identified the causes of the operational problems in the original regulation system. On the basis of the response times of the old regulation system, a valve with reduced intervention inertia has been suggested. The regulation logic was also modified: The valve interventions were directly linked to the presence variations recorded at the blast furnace top, and no longer to the opening variation of the turbine automatic system. A more rational use of the plant components and its control system, together with an increased of the electric energy production, have been demonstrated
Sulla progettazione dei forni tubolari per un impianto di Topping
No full textQuaderno CSEI, febbraio 198
Energy recovery of blast-furnace gas coke: The importance of a correct regulation system
No full textTecnologie innovative per lo sviluppo delle macchine a fluido
No full textPRIN 1995, coordinamento nazionale prof. F. Martell
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