Diagnostics of heat exchange equipment on basis of operating parameters of diesel fuel hydrotreating unit

Abstract

The research focuses on problems related to fouling of heat exchange equipment of DHT (diesel hydrotreatment) processes and heat exchanger condition diagnostics. The purpose of the work is to determine the critical parameters of operation of heat exchangers. According to the results of calculations on a mathematical model of a typical hydrotreating unit using a real-time diagnostic program based on monitoring operational parameters, the criterion for assessing the state of the reactor unit heat exchanger increases from 1 to 1.37 with an increase in the annulus pollution coefficient. When this occurs, the temperature of the raw material at the exit of the apparatus decreases and the cost of additional fuel consumed by furnaces in the amount of more than 1 million rubles / month. Diagnosis of heat exchangers in real time allows you to optimize operating costs, including choosing the optimal time for cleaning tube bundles in terms of comparability of costs for additional fuel consumed and cleaning.