CONTROL OF THE GASOLINE HYDROTREATING PROCESS

In a market economy, gasoline hydrotreating at modern oil refineries is considered one of the most important technological processes. In conditions where the demand for high-quality gasoline on the world market is high, control of the gasoline hydrotreating process is a very pressing issue. As oil refineries strive to meet stricter environmental regulations, hydrotreating processes are becoming increasingly important. An automated control system has been developed for such a technological process. During hydrotreating, petroleum fractions selectively react with hydrogen in the catalyst presence at relatively high temperatures and medium pressure. This process converts unwanted aromatics, olefins, nitrogen, metals, and organic sulfur compounds into stabilized products. Some hydrotreated fractions may require additional processing to meet final product specifications. The presence of compounds containing sulfur, nitrogen, and oxygen in diesel and gasoline fractions is also extremely undesirable, as this leads to a deterioration in the characteristics of diesel engines and internal combustion engines. The composition of these compounds is also undesirable from an environmental point of view. As a hydrotreating result, the petroleum products quality increases. As the molecular weight of the fraction increases, the desulfurization rate decreases. The gasoline hydrotreating process continues, releasing a small amount of heat, which is used to compensate for heat losses to the environment. Keywords: hydrotreating process, oil refinery, petroleum products, automation system, control object, optimal control.