Production of 800 kW of electrical power using medium calorific gas from a biomass gasifier integrated in a combined cycle [electronic resource]
An allothermal fluidized bed biomass gasifier is under construction to operate at a pressure slightly above atmospheric to produce a gaseous fuel of medium heating value. The output of the gasifier is 2.5 × 10⁶ kcal/h and will be attached to a gas turbine that is specifically modified to burn the ga...
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| Online Access: |
Online Access (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Oak Ridge, Tenn. :
distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1993.
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| Subjects: |
| Summary: | An allothermal fluidized bed biomass gasifier is under construction to operate at a pressure slightly above atmospheric to produce a gaseous fuel of medium heating value. The output of the gasifier is 2.5 × 10⁶ kcal/h and will be attached to a gas turbine that is specifically modified to burn the gas produced. The amount of electricity to be generated will be 800 kW. The gasifying medium used is superheated steam at 2.5 bars and 400°C and the amount needed will be 280 kg/h. The gasifier will have a cross sectional area of 2.1 m² with dimensions of 1 500 mm × 1 400 mm. There is a heat exchanger to provide the heat needed for the gasification reactions. The gasifier will operate at about 850°C and the biomass throughput will be about 950 kg/h. The amount of gas that is to be produced will be about 1 300 kg/h or 1 900 Nm³/h. Part of the gas obtained will be burned in an external combustor to provide the heat for the gasifier. The gas turbine to be employed is a single shaft turbine designed to drive 750 kVA electrical generator. The turbine combustion chamber is somewhat modified to allow for the lower heating value of the gas. However, there is no loss of efficiency in the turbine output due to lower calorific value of the fuel. The turbine inlet temperature is 900/°C and that of the exhaust will be 500°C. The amount of gas to be used is about 745 Nm³/h. The paper reports the experimental results obtained from a pilot-scale gasifier operating under similar conditions. The results of test runs carried out with a gas turbine are also presented. |
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| Item Description: | Published through SciTech Connect. 12/31/1993. "nrel/cp--200-5768-vol.1" " conf-9308106--vol.1" "DE93010050" 1. biomass conference of the Americas: energy, environment, agriculture, and industry, Burlington, VT (United States), 30 Aug - 2 Sep 1993. Gulyurtlu, I.; Cabrita, I. [Instituto Nacional de Engenharia e Tecnologia Industrial, Lisboa (Portugal)] National Renewable Energy Lab., Golden, CO (United States) |
| Physical Description: | pp. 513-520 : digital, PDF file. |