Abstract:

Taking Huadian Hubei Power Generation Company Limited as an example,the constant load and coal consumption tests on biomass gasification coupled coalfired unit power generation system are carried out. It is found out that the gas composition of biomass gasification syngas is stable，combustible gas mass fraction is around 30%, the mass fractions of CH4 and H2 are steady at 5%，and mass fraction of CO is about 18%. In the test, coalfired units have absorbed the influence of syngas on the pollutants, SO2 and NOx，in the flue gas. When syngas enters the furnace, the mass concentration of SO2 and NOx are below 35mg/m3 and 40mg/m3 respectively, which satisfies the ultra clean emission standard.The biomass gasification syngas has an enhancing effect on the combustion of the coalfired power plant. The biomass gasification syngas generates power efficiently through the coalfired unit, which can reduce the coal consumption of coalfired power plant.

Key words:

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">">biomass gasification coupled coal">">fired unit；biomass gasification syngas；pollutant；ultra clean emission；coal consumption