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Feasibility of high yield biomass fuel for regenerative gas turbine power plants in Sudan.

Number: 2100

Author(s) : AYA MOHAMMED HASSAN M., SIDDHARTH P., MOMIN ELHADI A.

Summary

Simulation models were used to characterize the gasification process of a Nilotica Wood Chips Biomass in Sudan. The lower heating value (LHV) of wood chips derived syngas reaches the maximum heating value of 35 MJ/kg for ER=25% at biomass moisture content of 35%, gasification pressure of 30bar, and gasification temperature of 1000°C.An optimum equivalence ratio of ER=25%, achieved a higher regenerative power of 98 MW at a higher
regenerator effectiveness of 95%, and a produced syngas rate of 5 kg/s. With air as a gasifier agent, the increase in gasification pressure enhanced the reaction rate and the product’s conversion of the gasification reaction, which yielded higher concentrations of the H2 and CH4 at the syngas product. As the initial moisture content increases, the results predict a decrease in the gasification temperature and the lower heating value of the syngas., due to change of the syngas composition. The model observed that, the Biomass gasifier’s flow rate is higher at lower gasification temperature. Additionally, the biomass flow rate is higher at higher gasifier pressure. At higher gasification pressure of 80 bar, the flow rate of the wood chips reached the maximum value of 11.75 kg/s, for the optimum ER of 25%,with a moisture content of 40% and a gasifier temperature of 1600°C.As the moisture content increases the results predict a decrease in the regenerator gas turbine power due the decrease of the syngas heat value. The results show that, higher the efficiency of the gasifier, the lower the quantity of the biomass flow rate. The predicted data depicted massive decrease in the gasifier efficiency upon increasing the biomass moisture content. For wood chips, the H2 and CO mole fractions reached the maximum values at the lowest values of the ER, while at the optimum ER
the H2 mole fraction depicted a value of 1.74%,0.7% of CO, and 8.14% of CH4, for a LHV of 31400 kJ/kg of syngas. The highest value of the syngas composition is depicted by N2 (53.73%), since air is the gasifier medium.

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  • Original title: Feasibility of high yield biomass fuel for regenerative gas turbine power plants in Sudan.
  • Record ID : 30030463
  • Languages: English
  • Subject: Technology, Developing country
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022/07/10

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