Study on Uniformity and Impact of Sludge Mixed Combustion in High Calorific Value Solid Waste Incinerators
In order to study the uniformity of mixing high moisture content sludge in high calorific value solid waste incinerator and the influence of sludge mixed combustion,research on sludge mixed combus-tion method and sludge feeding experiment were carried out.The combustion data at different mixing rate of sludge were analysed.The results show that the traditional way of feeding sludge into the furnace from the waste hopper is easy to cause sludge agglomeration;using multi-stage pipeline sludge feeding system and setting up each branch pipe to flow sludge in turn can ensure the uniformity and reliability of sludge feeding;When the water content of sludge is 80% with a mixing rate of less than 10%,there is no signif-icant impact on the combustion of the furnace and the emission of flue gas pollutants.However,mixed combustion of high moisture content sludge will lead to lower furnace temperature,increase NOx genera-tion and therefore higher ammonia consumption,but all within the controllable range.Therefore,it is fea-sible to directly mix 80% water content sludge in high calorific value solid waste incinerator,and the im-pact on combustion condition and flue gas pollutant emission is controllable.It is recommended to put sludge into the incinerator when the combustion condition is stable,and pay attention to the control of NOx emission concentration.
high calorific value solid wastegrate furnacemixed combustion of sludgesludge feedinguniformityflue gas pollutant emission
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