The present paper shows the experimental and numerical analysis of a biomass plant from maximum power of 2.3 MW. This is a classical Steam Power Plant with a maximum pressure of 48 bar and a turbine inlet temperature of about 430 °C at the design point. The size is significantly smaller than the mean of this t system [1], [2], [3], [4], but maintains a relative high value (about 22.9%) of the Global Electric Efficiency. The analysis was conducted using experimental data, collected directly on the Power Plant, at the Design Point, and thus validating thermodynamic models. The difficulty in collecting the experimental data of this type of system, is mainly due to the enormous variability of the lower heating value of biomass, which involves a large variability of the load and then the operating parameters. Combustion simulation was experimental data (Flue gas temperature, air flow, fuel flow) and the results allowed the evaluation of the biomass composition that is within the range reported in the literature [5]. Different Plant configurations were, numerically, evaluated to plug the power fluctuations due to variability of biomass. A 100 kWe Natural Gas fuelled Turbine (MGT) was numerically connected to the Steam Power Plant (BSPP) to evaluate the benefits on the power fluctuations and on the Global Electric Efficiency. A MGT thermodynamic scheme has been developed and, properly, validated with experimental data from literature [6] e [7]. It is designed to send the hot gases coming from the exit of the MGT in the combustion c main system, thus creating a MGT-ST Analysis of the results of this coupling has noticed an improvement in terms of efficiency and operational stability.
Abstract.The present paper shows the thermodynamic analysis of a gasification system (Fig. 1), which is currently used for the recovery of metals from contaminated substances of organic origin (waste of mechanical process, rolling, colddrawn, tins, multi-coupled materials, tetra, etc. .), and that, in this paper, is extended to the energy recovery and disposal of Paper Industry Waste. The interest in pyrolysis and gasification is justified because these processes go over the traditional combustion systems of biomass and waste. In this system the inert ambient is supported by the smoke coming from the combustion of natural gas and it is possible to schematize it into a line of heat treatment and in a flue gas cleaning occurring after the combustion. Using the results of different experimental tests a thermodynamic and thermo-chemical analysis is carried out. Starting from the energy and mass balances on the entire system and on the each component, the balance of the gasification reactions is verified.
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