Simulation of continuous deodorizers: Effects on product streams

Abstract

This work deals with the simulation of deodorization, one important process in the edible oil industry related to the removal of odoriferous compounds. The deodorizer was modeled as a multicomponent stripping-column in cross-flow and countercurrent flow. The impact of processing parameters on the quality of the product streams was analyzed. The deodorization of soybean and canola oils (plant scale) and wheat germ oil (lab-scale) was studied under typical ranges of temperature, stripping steam rate, and pressure. Their entire compositions were considered within the simulations, including acylglycerols, FFA, and other key components such as tocopherols and sterols. The deodorization results were analyzed in terms of retention of tocopherol and sitosterol and of neutral oil loss to the distillate. The deodorizer modeling considered Murphree efficiencies and entrainment for each plate. A case study, i.e., the deodorization of soybean oil, illustrated the applicability of our modeling.

Measurement, correlation and prediction of isothermal vapor–liquid equilibria of different systems containing vegetable oils

“…For this reason, some vegetable oils and animal fats have become important commodities in the international market [2]. In recent years the interest in fatty compounds has been motivated by the optimization and development of new technologies in edible oil processing [9][10][11][12][13][14], by the search for alternative solvents for oil extraction from oilseeds [15][16][17][18][19][20], and mainly by the growing concern in finding alternative non-fossil fuels as biodiesel [21][22][23].…”

Estudio de la Desodorización de Aceite de Soja por Simulación

“…Existen varias alternativas para el proceso, en este trabajo sólo se consideró el agotamiento con vapor en dos configuraciones, flujo cruzado y contracorriente. Todas las simulaciones fueron realizadas a partir de un caso base industrial (Ceriani y Meirelles, 2004c). La Tabla 1 presenta los datos básicos de esa desodorización industrial.…”

“…Recientemente se ha realizado una importante contribución (Ceriani y Meirelles, 2004a) para describir el equilibrio líquido-vapor de sistemas relacionados con los ácidos grasos necesarios en la simulación de la operación de agotamiento. Por otro lado, en la literatura se pueden encontrar trabajos que han simulado la desodorización batch (Ceriani y Meirelles, 2004b;Balchen et al, 1999), la continua (Ceriani y Meirelles, 2004c, 2006) y la formación de ácidos grasos trans (Ceriani et al, 2008).En este trabajo se presentan resultados de la simulación del agotamiento continuo con vapor de un aceite de soja.…”

Simulation of continuous physical refiners for edible oil deacidification

“…Computer simulation has been used in the investigation of some traditional processes of the food industry, as batch steam refining of coconut oil (Ceriani & Meirelles, 2004a), continuous deodorization of a selection of mono-and polyunsaturated vegetable oils (Ceriani & Meirelles, 2004c), and whisky manufacture (Gaiser et al, 2002). The good performance of the simulation programs developed in these works emphasizes the applicability of this kind of tool for complex systems.…”

“…The good performance of the simulation programs developed in these works emphasizes the applicability of this kind of tool for complex systems. Ceriani and Meirelles (2004c) compared with success the tocopherol retention in soybean oil submitted to deodorization in industrial scale equipments (18,000-23,000 kg/h) following data from Maza et al (1992). Unfortunately, we found few research papers reporting experimental data for continuous physical refining of coconut and palm oils.…”