Analyses of Coal and Sewage Sludge Co-Combustion Using Coats-Redfern Model

Huan Li; Yang Yang Li; Yi Ying Jin

doi:10.4028/www.scientific.net/AMR.518-523.3271

Paper Titles

Research on the Third-Party Recycle Operating Mode of Regenerated Resources in China
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The Formation and Control of Secondary Pollutants during Thermal Treatment of Municipal Solid Waste
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Utilization of Waste Hydraulic Oil as Fuel in Diesel Engine
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A Study on the Recycling of Walnut Filter Material by Cleaning
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Analyses of Coal and Sewage Sludge Co-Combustion Using Coats-Redfern Model
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Analysis and Improvement of Livestock Wastes Collection System in Rural Areas — A Case Study of Erhai Lake Watershed
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Assessment of Sludge Utilization Technologies — A Case of Tianjin Qingninghou Landfill
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Benefits from Waste Pickers and Collectors’ Doing Based on Land Resource and Environment for Beijing
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Biogas Production from Cow Manure in an Experimental 20 m³ Reactor with a Jet Mixing System
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 518-523Analyses of Coal and Sewage Sludge Co-Combustion...

Analyses of Coal and Sewage Sludge Co-Combustion Using Coats-Redfern Model

Abstract:

The co-combustibility of coal and sludge was investigated with thermogravimetric analysis. The results show that the burning process of sludge can be divided into three phases: water evaporation, volatile matter volatilization and combustion, fixed carbon combustion and burning out. The ignition temperature of sludge is only 260 degree centigrade at the beginning of volatile matter combustion. The addition of wet sludge or dried sludge will reduce the burning velocity of coal, and also decrease the ignition temperature. However the blend of coal and sludge has not an obvious stage of the volatile matter volatilization and combustion. The activation energy of the sludge is lower than that of the coal. The addition of wet sludge or dried sludge will decrease the activation energy of the blend fuel, and improve the fire behavior. On the whole, the sludge addition has little influence on the combustion of the coal when the addition ratio is lower than 10%.