Pilot-test of coal-fired boiler coupling with waste incineration technology
The production of municipal solid waste increases year with year as the development of urban modernization.The demand for waste incineration is strong.However,the traditional waste incineration power plant has the disadvantages of low thermal efficiency,high environmental protection costs,and worse economic performance,which make it rely on financial subsidies from the government.The coal-fired power plant coupling with waste incineration technology can co-process municipal solid waste,reduce the cost of waste in-cineration,and reduce the coal consumption and CO2 emission of coal-fired power plants.However,the waste incineration process will generate a lot of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs),which may increase the toxicity of the flue gas of coal-fired boiler.To investigate the influences of coupling technology on coal-fired boilers,the experiments were con-ducted on a 100 kW pilot-test bench.The combustion characteristics and pollutant emission characteristics were analyzed in the experi-ments.The results indicate that the temperature distribution of the coal-fired boiler become more even after coupling with waste incinera-tion,and the temperature of the combustion zone and lower zone of the boiler decreases about 30 ℃,while the temperature of the upper zone increases about 35 ℃.The decomposition effects of coal-fired boiler on PCDD/Fs are very obvious.When the red mud is blended with the waste,the PCDD/Fs concentration of the flue gas of a coal-fired boiler decreases to 0.003 4 ng/m3,which can meet the standard for pollution control on the municipal solid waste incineration of China.
万方数据
维普
