Figure 1. Schematic diagram of the 80 kWth down firing furnace system set-up.
Figure 2. Thermogravimetric analysis (TGA) and derivative thermo-gravimetric (DTG) of coals and sewage sludges.
Figure 3. Temperature of IN/HCS co-firing case.
Figure 4. CO concentration (ppm).
Figure 5. NOx concentration at O2 6%.
Figure 6. SOx concentration at O2 6%.
Table 3. Experimental conditions for co-firing
Table 1. Composition of fuels
Table 2. Experimental condition for hydrothermal carbonization sewage sludge
Table 4. Combustion efficiency by co-firing rate
Table 5. Concentration of O2 and CO
References
- Heinzel, H., Siegle, V., Spliethoff, H., and Hein, K., "Investigation of Slagging in Pulverized Fuel co-Combustion of Biomass and Coal at a Pilot-Scale Test Facility," Fuel Proc. Technol., 54, 109-125 (1998). https://doi.org/10.1016/S0378-3820(97)00063-5
- Cenni, R., Frandsen, F., Gerhardt, T., Splietho, H., and Heina, K., "Study on Trace Metal Partitioning in Pulverized Combustion of Bituminous Coal and Dry Sewage Sludge," Waste Manage., 18, 433-444 (1998). https://doi.org/10.1016/S0956-053X(98)00127-5
- Werther, J., and Ogada, T., "Sewage Sludge Combustion," Prog. Energy and Combust. Sci., 25, 55-116 (1999). https://doi.org/10.1016/S0360-1285(98)00020-3
- Yoshihiko, N., Lian, Z., Takeo, S., Chikao, K., and Megumi, M., "Transformation of Mineral and Emission of Particulate Matters During Co-Combustion of Coal with Sewage Sludge," Fuel, 83, 751-764 (2004). https://doi.org/10.1016/j.fuel.2003.09.022
- Amand, L., and Leckner, B., "Co-combustion of Sewage Sludge with Wood/Coal in a Circulating Fluidized Bed Boiler-A Study of Gaseous Emissions," Chalmers University of Technology, Sweden, (2001).
- Salatino, P., "Fluidized Bed Combustion of Pelletized Biomass and Waste-Derived Fuels," Combust. and Flame, 155, 21-36 (2008). https://doi.org/10.1016/j.combustflame.2008.05.013
- Liang, W., Terese, L., and Ehsan, H., "Effect of Sewage Sludge Addition on Potassium Release and Ash Transformation during Wheat Straw Combustion," Chem. Eng. Trans, 2283-9216 (2014).
- Hong, Y., and Ichiro, N., "Combustion Characteristics of Dried Sewage Sludge and Control of Trace-Metal Emission," Energy & Fuels, 19, 2298-2303 (2005). https://doi.org/10.1021/ef0501039
- Lars-Erik, A., Leckner, B., David, E., and Claes, T., "Deposits on Heat Transfer Tubes during Co-Combustion of Biofuels and Sewage Sludge," Fuel, 85, 1313-1322 (2006). https://doi.org/10.1016/j.fuel.2006.01.001
- McIlveen-Wright, D., Huang, Y., Rezvani, S., and Wang, Y., "A Technical and Environmental Analysis of Co-Combustion of Coal and Biomass in Fluidised Bed Technologies," Fuel, 86, 2032-2042(2007). https://doi.org/10.1016/j.fuel.2007.02.011
- Davidsson, K., Amand, L., Elled, A., and Leckner, B., "Effect of Cofiring Coal and Biofuel with Sewage Sludge on Alkali Problems in a Circulating Fluidized Bed Boiler," Energy & Fuels, 21, 3180-3188 (2007). https://doi.org/10.1021/ef700384c
- Tomasz, K., Marco, M., Michael, I., and Roman, W., "Investigation of Ash Deposit Formation during Co-Firing of Coal with Sewage Sludge, Saw-Dust and Refuse Derived Fuel," Fuel, 87, 2824-2837 (2008). https://doi.org/10.1016/j.fuel.2008.01.024
- Fouad, A., and Jaroslaw, Z., "An Evaluation of Biomass Co-Firing in Europe," Biomass and Bioenergy, 34, 620-629 (2010). https://doi.org/10.1016/j.biombioe.2010.01.004
- Aho, M., Yrjas, P., Taipale, R., Hupa, M., and Silvennoinen, J., "Reduction of Superheater Corrosion by Co-Firing Risky Biomass with Sewage Sludge," Fuel, 89, 2376-2386 (2010). https://doi.org/10.1016/j.fuel.2010.01.023
- Chao, H., Apostolos, G., and Jing, Y., "Conversion of Sewage Sludge to Clean Solid Fuel Using Hydrothermal Carbonization: Hydrochar Fuel Characteristics and Combustion Behavior," Appl. Energy, 111, 257-266 (2013). https://doi.org/10.1016/j.apenergy.2013.04.084
- Ganesh, K., Zhengang, L., Akshay, J., Srinivasan, M., and Rajasekhar, B., "Hydrothermal Carbonization of Sewage Sludge for Energy Production with Coal," Fuel, 111, 201-210 (2013). https://doi.org/10.1016/j.fuel.2013.04.052
- Eyser, C., Palmuc, K., Schmidt, T., and Tuerka, J., "Pharmaceutical Load in Sewage Sludge and Biochar Produced by Hydrothermal Carbonization," Sci. Total Environ., 537, 180-186 (2015). https://doi.org/10.1016/j.scitotenv.2015.08.021
- Chuan, P., Yunbo, Z., Yun, Z., Bibo, X., Tengfei, W., Caiting, L., and Guangming, Z., "Production of Char from Sewage Sludge Employing Hydrothermal Carbonization: Char Properties," Combust. Behavior and Thermal Characteristics, Fuel, 176, 110-118 (2016). https://doi.org/10.1016/j.fuel.2016.02.068
-
Liu, G., Yan, L., Pozzobon, E., Higgins, B., Milewicz, M., and Repcznski, A., "High Portion Biomass Co-Firing and
$NO_x$ Reduction in a Coal-Fired Boiler," Clean Coal & Fuel Systems 2012, 192-205 (2012). -
Sung, Y., Lee, S., Kim, C., Jun, D., Moon, C., Choi, G., and Kim, D., "Synergistic Effect of Co-Firing Woody Biomass with Coal on
$NO_x$ Reduction and Burnout during Air-Staged Combustion Experimental Thermal and Fluid Science," ETF Sciencev., 71, 114-125 (2016).