Co-Combustion of Paper Mill Sludge and Bituminous Coal in Air Using Thermogravimetric Analyzer

Abstract

The combustion of paper mill sludge and bituminous coal in air was analyzed using a thermogravimetric instrument. TG and DTG curves for the blends lies between that of the individual fuels, and the main combustion characteristics of blends depended on individual fuels and followed the weighted average. As the blending ratio of paper mill sludge was increased from 10% to 90%, the ignite temperature (Ti) decreased from 529.6°C. to 275.6°C., and residual weight increased from 19.28% to 47.39%. The TG profiles of sample were almost the same at different heating rates, however there was a big difference between the DTG profiles. The maximum weight loss rate of sample increased obviously with the increment of heating rate. This work contributes to the comprehensive understanding of paper mill sludge and bituminous coal combustion and development of co-combustion technology.

Effect of blending sewage sludge with coal on combustion and ash slagging behavior

“…Samples are impacted by the high temperature over a short time, so the reactions are enhanced. 39 3.1.3 Inuence of blending ratio on combustion. Fig.…”

Techno-Economic Analysis of Fluidized Bed Combustion of a Mixed Fuel from Sewage and Paper Mill Sludge

“…Sewage sludge calorific values range from approximately 6 MJ/kg to 16 MJ/kg, depending on the water content and the level of fermentation [6]. Sewage sludge combustion and co-combustion with other fuels is a topic widely elaborated on in the literature, contrary to the combustion or co-combustion of paper mill sludge [7][8][9][10][11][12]. Raw sewage sludge can be burned with other fuel, usually coal [13][14][15][16][17][18][19][20][21][22][23][24], or it can be dried to improve its calorific value Energies 2022, 15, 8964 2 of 13 for mono-combustion [16,[25][26][27][28].…”

“…Raw sewage sludge can be burned with other fuel, usually coal [13][14][15][16][17][18][19][20][21][22][23][24], or it can be dried to improve its calorific value Energies 2022, 15, 8964 2 of 13 for mono-combustion [16,[25][26][27][28]. However, some of the works used thermogravimetric analysis (TGA) only [7][8][9]20,29].…”