Technological process control of oil-based gas absorption

The main purpose of the paper is to study the optimization of the technological process of oil gas absorption. For this purpose, a complete analysis of the technological process was made with the identification of automation tasks: ensuring a stable temperature of absorbent in the circuit; ensuring a stable temperature of the cooling circuit; filtration of absorbent; ensuring a stable gas pressure in the system; free flow of absorbent between the tanks; accounting of purified gas. The process of selecting equipment for development of a three-level automated control system for oil gas absorption was investigated. The system has 35 discrete signals and 17 analog signals. The measuring devices that should be responsible for collecting and transmitting process information to the logic controller model were selected, the actuators that directly interact with the gas absorption process were selected. Based on the selected sensors, the type of sensor signal, its name and the required number for the possible realization of the automated system were specified. The industrial logic controller, which meets all the requirements of the technological process, was selected. The article provides a rationale for the choice made.