Optimización del sistema de intercambiadores de calor del tren de precalentamiento de crudo de la Unidad no Catalíticas II en la Refinería Estatal Esmeraldas.

Abstract

Optimization of exchangers system of heat of the pre-heating trains of crude of unit no Catalytic II in the State Oil Refinery Esmeraldas. For this research was made the collect of physic-chemical properties of fluid and detailed engineering of each exchanger of each shell and tube, were identified points for making temperatures measurements through a pyrometer during 15 working days with 100% of charge, were determined the flows into and out with DCS Graphic, by means of flow indicators with its respective historic, whole of these data were registered in Excel spread sheet to carry out the evaluation of pre-heating circuit with Kern Method, for determining heating transference coefficients, polluting factor and pressure drop. The results with respect to the polluting factor were of 0.00080 h ft2 ºF / BTU to C-E20, 0.00633 h ft2 F / BTU to C-E21, 0.00219 h ft2 F / BTU to C-E22, 0.33632 h ft2 F / BTU to C-E44A / B, 0.00300 h ft2 F / BTU to C-E23 A / B, 0.00304 h ft2 F / BTU to C-E45 and 0.00277 h ft2 F / BTU to C-E46 A / B / C. It was proposed a technical improvement for the heating transference in the pre-heating systems that consist in a shell cleaning and battered tubes in the exchangers C-E21, C-E22, and C-E23 A / B and was proposed a change of tube - bundle to C-E44 a / B, for returning to pre-heating train to the design conditions. To allow the correct functioning of system and improve heat transference, it is recommended the implementation of this optimization study in Unit No Catalytic II of Oil Refinery Esmeraldas.