Experience of combustion composite fuel at a thermal power station in the Irkutsk region

THE PURPOSE. To assess the possibility of burning coal sludge, waste of coal preparation, in the furnaces of power boilers at the thermal power station of the Irkutsk region. METHODS. Technological and mathematical research methods were used to analyze the incineration of coal preparation waste. RESULTS. The article presents the experience of using coal preparation wastes from Cheremkhovsky coal at CHPP-12 of Irkutskenergo. Presented are the results of thermal tests of the TP-30 boiler at CHPP-12 during the trial combustion of granular waste from coal enrichment together with waste from marble production mixed with Golovinsky coal. As a result, it was revealed that the main parameters of the boiler operation practically did not change, there was a slight decrease in the temperature of the air mixture at the outlet of the mills in comparison with pure Golovinsky coal, which is due to the higher moisture content of the resulting mixture, in addition, there is a decrease in sulfur dioxide emissions by 18- 30% in depending on the proportion of granular waste of coal preparation in the mixture. CONCLUSIONS. Experimental studies carried out at CHPP-12 when burning Golovinsky coal mixed with granular waste of coal preparation in amounts up to 30% of the total amount of the mixture indicate that granular waste of coal preparation can be burned without any special restrictions in the operation of the equipment of the CHPP. Based on the results obtained, an analysis was carried out and recommendations for the incineration of coal preparation wastes were developed.

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