Condition monitoring of heat-exchange equipment of the diesel fuel hydrotreatment processes

Hydrotreating technology is practically used for all products obtained in the process of primary petroleum processing, as well as for isomerization, reforming and catalytic cracking processes in order to obtain quality characteristics in terms of sulfur content in processing products. The paper presents ways to solve the current problem, which is to ensure the condition monitoring of heat exchange equipment in process plants that carry out diesel fuel hydrotreatment. The work is aimed at developing a technology and system to monitor the state of heat exchange equipment of the reactor block of the diesel hydrotreatment process using operating parameters based on the technological process simulation in the Aspen HYSYS environment. A study of the diesel fuels hydrotreatment process showed that, due to the temperature rise of the furnace pass, it is necessary to lower the raw material productivity. This is necessary to comply with the requirements of the technical process regulations. However, this leads to a decrease of 5% in production and losses of the enterprise to 20 million rubles per month. Input and output data on the flow rate, temperature and pressure of products, material and thermal balance of the reactor unit form the basis of the heat exchange equipment operation model and heat exchangers monitoring system. By comparing the parameters values of the heat exchange process model with the “ideal” heat exchangers without losses, with a model that is based on real data, it is possible to estimate the sources of losses and their quantitative characteristics. The proposed technology and monitoring system of heat exchange equipment makes it possible not only to determine the boundaries of the effective operation of heat exchangers, but also to save energy resources, and thus increase the profit of the enterprise, as well as provide comprehensive monitoring of the technological installation equipment, including not only machinery, but also heat exchange, column, capacity, reactor equipment.