Modeling and control of oils and greases adsorptive purification in the changing raw materials mode

Abstract

The development of the production sphere and transport determines the need for industrial and transport oils and greases regeneration. A feature of production processes for purification waste is the significant unstable properties of raw materials that come in for purification. An urgent task is to create control systems for the purification of these substances when they arrive with significantly different properties. The purpose of the study is to improve efficiency of automation systems of adsorption purification by determining relationship between properties of each new batch of raw materials and necessary conditions for its purification. Analysis of the adsorption purification technology, typical solutions of control systems and raw materials properties made it possible to justify the need to create a special mathematical support for control of the changing raw materials stage. A control method aimed at achieving this goal is proposed, which is based on the use of a database. The method involves following stages: searching in the database of substances-analogs for new raw materials; statistical studies of the regime parameters array found for analogues; making decisions on correcting tasks for controllers; parameters adaptation specifically to new raw materials; entering facts about properties of new raw materials and relevant parameters into the database. Statistical studies involve the description of substances properties and the purification process in several forms (types of models) and a gradual change of forms depending on the database capacity. The article provides an example of the algorithm implementation using MS Access. The results are obtained on the basis of methods of system analysis, statistical studies, control systems design and databases. The scientific novelty of obtained results is as follows: in singling out the arrival of new raw materials as a separate operation mode of the control object; in the method of forming tasks for controllers using database of analogue raw materials; in the application of various forms of connection between the properties of substances and mode parameters depending on the database capacity. The obtained results make it possible to increase efficiency of the control systems of waste regeneration productions by reducing time and increasing the accuracy of determining necessary conditions for the processing of various contaminated raw materials.