394417 Improving Plant Economy By Preventing Heat Loss in Edible Oil Refinery

Monday, November 17, 2014
Galleria Exhibit Hall (Hilton Atlanta)
Maneet Goyal and Shrawana Lohare, Department of Petroleum and Petrochemical Engineering, Maharashtra Institute of Technology, Pune, India

An exhaustive study of the processes involved in the refining of Ground Nut oil was undertaken. It was found that for complete processing of 10 MT of crude oil, the plant under study took 21.25 h which was too high. Subsequently, based on the process variables readings throughout the process, the point of maximum heat loss was determined and calculations were carried out to determine the effect of insulation over that point. Prior to calculating, storage tank’s modeling and simulation were carried out in order to determine its liquid fill percentage (84.1%) and wetted surface area (24.24 m2). The findings show that 82% reduction in the total heat loss of 80.57 MJ (at quiescent air conditions) is achieved when a Glass/Wool insulation of 25 mm thickness is employed over the bleached-oil storage tank. Further, doubling the insulation thickness prevents the heat loss by an additional 8%. The resultant decrement in heat loss significantly reduces the workload over deodorizer and also brings down the production time. The effect of wind over heat loss was also studied and a graph was plotted between wind speed and the corresponding heat loss values. Moreover, it was found that employing of insulation over the storage tank generates a profit of US$ 23598 per annum for the refinery.

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