Abstract
ABSTRACTThe gas–solid separation has several industrial applications in engineering process. The collection efficiency and the energy consumption are critical variables in particles separation process. In this study, a non-linear programming problem is proposed to maximise the cyclone efficiency in a 34,560.0 ton/year particles separation–classification plant. A new process integration scheme is proposed to energy consumption minimisation. The units included in the model are a powder feeder, a high efficiency cyclone, a bag filter and a blower. Stairmand and Swift’s high efficiency cyclones models are evaluated and compared. Four particulate materials are considered: limestone, dolomite, sawdust and toner. The particles diameters range studied is 0.1–1000 m. Mass and energy balances are solved with an initial solid concentration of 500 g/m. Stairmand’s cyclone proved to be more efficient than Swift for all materials analysed. The highest cyclone efficiency is achieved for sawdust ( 99%). The cyclone separates more than 34,000 ton/year of particles m. The energy integration scheme consumes 43% less energy than the basic one for all cases studied. The proposed optimisation model results a valuable tool for optimal process design, reducing the environment process impact and adaptable to operate at high temperatures values with different materials.
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