Chernishev M. Automatic control system of technological processes of sulfur dioxide

Object: automatic control of technological process of obtaining sulfur dioxide at coke plants. Methods: the construction of models, algorithms, control structures and synthesis of automatic control system of technological process of sulfur dioxide were used: the methods of systems analysis and decomposition methods of modern control theory, methods and algorithms for identifying the object of control, methods for building distributed and fault-tolerant control systems based on modern network technologies, computer modeling, analysis of experimental results. Goal: improve the quality of the production management system of sulfuric acid from coke oven gas through the upgrading of the automatic control process of obtaining sulfur dioxide, which allows to reduce the amount of nitrogen oxides in the combustion products. Theoretical and practical results: fixed-date scientific and practical task of improving the system of automatic control of technological process of sulfur dioxide in the scheme of production of sulfuric acid by the wet catalysis, which allows to fulfill the requirements of production schedules and reduce nitrogen oxides in the products of combustion in the boiler furnace for burning hydrogen sulfide gas. Scientific novelty: further developed a dynamic mathematical model of the technological process of sulfur dioxide, based on joint consideration of material and heat balances, reflecting the temporal correlation function of individual process units, which allows to formalize the complex process of analysis and synthesis of control system, a modified method of identification and operational settings of mathematical models of temperature in the apparatus of the process of obtaining sulfur dioxide, characterized by the fact that adaptation is produced identifiable model parameters in real-time, first developed by a combined management structure of a multiply-gas temperature at the output devices of technological process of sulfur dioxide, resulting in improved performance quality control process by 30-40% compared with a system built on the principle of rejection, designed the structure and software agreement management process of obtaining sulfur dioxide on the basis of modern industrial automation technologies with multi-level decentralized control system the production of sulfuric acid, allowing the system to integrate a single information network of the enterprise. The degree of implementation: in the creation and modernization projects of automation of technological process of production of sulfuric acid in Private company "MAKEEVKOKS" and Public company "Avdeevskiy Coke Plant". Area of use: coke: chemical industry.