Promising components of waste-derived slurry fuels |
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| Affiliation: | 1. National Research Tomsk Polytechnic University, Heat Mass Transfer Simulation Laboratory, 30, Lenin Avenue, Tomsk 634050, Russia;2. Laboratoire de Thermique et Énergie de Nantes (LTeN), CNRS UMR 6607, Université de Nantes, Rue Christian Pauc, BP 50609, 44306 Nantes cedex 3, France;1. CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, 230026, China;2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi''an, Shaanxi, 710075, China;3. Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China, Hefei, 230026, China;4. Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefe, Anhui 23008, China |
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| Abstract: | The paper presents the results of experimental studies of energy (calorific value, ignition delay times and threshold ignition temperatures, duration and temperature of combustion) and environmental (CO2, NOx and SOx emission) characteristics of fuel slurries based on pulverized wood (sawdust), agricultural (straw), and household (cardboard) waste. Wastewater from a sewage treatment plant served as a liquid medium for fuels. Petrochemical waste and heavy oil were additives to slurries. The focus is on obtaining the maximum efficiency ratio of slurry fuel, calculated taking into account environmental, cost, energy and fire safety parameters. All slurry fuels were compared with typical coal-water slurry for all the parameters studied. A comparison was also made between slurries and traditional boiler fuels (coal, fuel oil). The relative efficiency indicator for waste-based mixtures was varied in the range of 0.93–10.92. The lowest ignition costs can be expected when burning a mixture based on straw, cardboard and oil additive (ignition temperature is about 330 °C). The volumes of potential energy generated with the active involvement of industrial waste instead of traditional coal and oil combustion are forecasted. It is predicted that with the widespread use of waste-derived slurries, about 43% of coal and oil can be saved. |
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| Keywords: | Industrial waste Slurry fuels Ignition Combustion Emission Fuel efficiency CLF"} {"#name":"keyword" "$":{"id":"kwrd0045"} "$$":[{"#name":"text" "_":"composite liquid fuels CWS"} {"#name":"keyword" "$":{"id":"kwrd0055"} "$$":[{"#name":"text" "_":"coal-water slurry CWSP"} {"#name":"keyword" "$":{"id":"kwrd0065"} "$$":[{"#name":"text" "_":"coal-water slurry containing petrochemicals |
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