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Examinando por Autor "Acosta Maya, Diego Andrés"

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    Ítem
    Cement in-line calciner kiln modeling for heat optimization using a design of computer experiments
    (Universidad EAFIT, 2020) Ortiz Muñoz, Alejandro; Builes Toro, Santiago; Acosta Maya, Diego Andrés; Acosta Maya, Diego Andrés
    A model of a dry process cement kiln was implemented in Aspen Plus V9 and validated with a 2000 metric ton per day in-line calciner cement kiln data. A simpli ed model of the process was obtained using a 20-run Plackett-Burman design of experiments on Aspen Plus simulations with 19 input variables related to false air (in-leakage air), oxygen concentration, calciner temperature, cyclones e ciency and clinker's cooler bed height. Linear metamodels for the speci c heat consumption (SHC) and other response variables were obtained. The metamodel indicated that (i) false air in cyclones 4 and 5, (ii) calciner's control temperature, (iii) oxygen concentration at the calciner exit and (iv) cooler's clinker bed height were the most signi cant input variables a ecting SHC. The SHC obtained from simulation based on the optimized values from the metamodel resulted in a reduction of ca. 29 kcal/kg of clinker. A sensitivity analysis indicated that the two most impacting variables were the oxygen concentration at the calciner's exit and the cooler's clinker bed depth. The SHC metamodel is a powerful tool for capturing the complexity of the process simulations on a simple and easy to use model.
  • No hay miniatura disponible
    Ítem
    Instant coffee semi-batch extraction process heat recovery
    (Universidad EAFIT, 2021) Ledesma Rendón, Nelson Andrés; Acosta Maya, Diego Andrés; Acosta Maya, Diego Andrés
    .
  • No hay miniatura disponible
    Ítem
    Prototyping industrial clay development : wax and bentonite blends characterization
    (Universidad EAFIT, 2020) Agredo Orozco, Andrés Felipe; Acosta Maya, Diego Andrés; Rodríguez Arroyave, Carlos Arturo; Sierra Zuluaga, Luis Fernando; Acosta Maya, Diego Andrés; Sierra Zuluaga, Luis Fernando; Rodríguez Arroyave, Carlos Arturo
    In this study, rheological properties and behaviors of bentonite and paraffin wax blends used in the elaboration of a prototyping clay were investigated. For this purpose, various bentonite and paraffin formulations were prepared. 3 different material proportions were used to ensure a homogeneous phase. The rheological properties of the resulting formulations were characterized by a rotational rheometer. This paper presents the rheological characterization of paraffin wax and bentonite blends in order to obtain some insights to upscale the extrusion process of the prototyping industrial clay developed in EAFIT university.

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