Study on the Influence of Hydrogen Blending Ratio on Low Emission Combustor Performance
To explore the adaptability of traditional natural gas turbines to hydrogen fuel,based on the structure and performance of a certain type of industrial low-emission gas turbine,the influence of the proportion of hydrogen in the fuel on the performance of the low-emission combustion chamber was ana-lyzed by numerical simulation method,and the conversion performance of methane and hydrogen fuel in the combustion chamber was determined.The results show that under the full load condition,when the hydrogen mixing ratio is less than 30％,the combustion chamber does not backfire,the temperature in the nozzle and the circulating zone of the flame tube shoulder and total pressure loss in the combustion chamber increase with the increase of the hydrogen mixing ratio,the NOx emission volume fraction in-creases slightly,and the CO emission volume fraction decreases;when the hydrogen mixing ratio is more than 30％,the combustion chamber is tempered,and the temperature in the nozzle and the circulating zone of the flame tube shoulder,the total pressure loss and NOx emission volume fraction increase signifi-cantly,and the CO emission is almost 0.Under other working conditions,the influence of the load varia-tion on the combustion chamber boundary condition is complex,and the influence of the gas turbine working condition on the nozzle tempering boundary has no monotonicity variation.
industrial gas turbinecombustorhydrogen blending combustionpremixed combustion
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