INVESTIGADORES
BUCALA Veronica
artículos
Título:
A validated flowsheeting tool for the study of an industrial granulation process
Autor/es:
COTABARREN, IVANA; BERTIN, DIEGO; BUCALÁ, VERÓNICA; PIÑA, JULIANA
Revista:
INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH
Editorial:
AMER CHEMICAL SOC
Referencias:
Lugar: Washington; Año: 2013 vol. 52 p. 15198 - 15210
ISSN:
0888-5885
Resumen:
This work evaluates the capabilities of a complete dynamic simulator developed for a urea granulation circuit
(based on fluidized bed technology) to analyze the process sensitivity against different disturbances and to study common
operating problems. First, the circuit model is validated by comparing simulation results with plant data from a high capacity
industry. On the basis of a sensitivity analysis of the process variables, diverse strategies are explored aiming to solve typical
operational challenges (i.e., granulation temperatures that are too high, undesired dust formation, low fluidized bed heights, etc.)
by considering different control variables or alternative flowsheet configurations. It is demonstrated that an appropriate
fluidization air distribution between the different granulator chambers allows control, within certain limits, of the often too-high
fluidized bed temperatures. Furthermore, it is shown that by adjusting the total granulator pressure drop, the fluidized bed levels
can be kept within the desired ranges. Finally, the developed flowsheeting tool suggests that the partial bypass of the fines
generated in the crusher can be an efficient strategy for improving the product on-specification while the circuit variables remain
within the desired operating range.