A simulation methodology to evaluate BIG-STIG systems in sugar and alcohol plants
- State Univ. of Campinas (Brazil)
- EFEI, Itajuba (Brazil). Federal School of Engineering
This paper describes a simulation procedure to assess BIG-STIG -- Biomass Integrated Gasifier/Steam Injected Gas Turbine -- systems in sugar-cane mills. Two configurations are considered: one in which the conventional steam cycle is the bottoming part of a combined cycle and another one in which the gas turbine is used as the only power machine. Both the operation during the harvest season and the operation between such seasons -- when the steam injection in the gas turbines occurs -- are simulated. The four main modules of a BIG-STIG system are simulated here: the gas turbine -- GT, the heat recovery steam generator -- HRSG, the biomass gasification plant and the conventional back-pressure steam turbine cogeneration unit. Three gas turbines of different capacities were studied and the corresponding results compared to those available in some references. The modelling allows the analysis of the process steam requirements, the blast air extractions and the main HRSG operational constraints, like the minimum pinch-point temperature at the HRSG and the minimum HRSG stack gas value.
- OSTI ID:
- 86063
- Report Number(s):
- CONF-941024--; ISBN 0-7918-1213-8
- Country of Publication:
- United States
- Language:
- English
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