| Popis: |
Based on the analysis of the existing distributed control system of the diesel fuel mixing unit, the imperfection of the control loops of the kerosene fraction, the depressant-dispersant, cetane-increasing and antiwear additives were revealed due to the fact that they do not take into account the quality indicators of commercial diesel fuel if there are in-line analyzers of its characteristics in the automated system. It leads to the need for the operator to participate in the control of the flow rate of these flows. In this regard, the unit was simulated on the basis of experimental and statistical methods, based on the results of which a virtual analyzer of the lubricity of commercial diesel fuel was developed. Proposals have been formulated for the modernization of control loops with the consumption of depressant-dispersant and cetane-increasing additives, kerosene fraction, adjusted for the qualitative characteristics of commercial diesel fuel, as well as the consumption of antiwear additives, corrected according to the results of the readings of the developed virtual analyzer of the lubricity of fuel. Programs for the implementation of modernized control loops in the language of functional blocks of the Centum VP controller have been developed. |
