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A description of a process that depends on a set of parameters is a complex set of functional dependencies. The system is intellectual, because it is based on the actual data on the operation of industrial processes and devices of chemical technology. These data are analyzed, conclusions and recommendations are made. The physico-chemical model is a software-implemented main unit of this system, which includes calculations on the equations of material and thermal balances of hydrocarbon transformations. [ABSTRACT FROM AUTHOR]

This paper investigates and explains how the feedstock composition affects the catalytic cracking products. For this purpose, at the first stage, the group composition of the catalytic cracking vacuum distillate (297-540°C) and the products of the process (heavy fractions fr. 195-340°C, fr. 340+ºC), the feedstock structural-group composition, as well as the coke structure of coked and regenerated catalysts by TG-DSC. Using a mathematical model, it was found that with an increase in the ratio of saturated hydrocarbons to the sum of aromatics and resins from 1.44 to 3.17 units, the yield of wet gas increases by 1.64, the yield of the gasoline fraction increases by 2.62% wt., the yields of fractions 195-340°C and 340+°C decreases by 1.16 and 1.93% wt respectively. It was shown that feedstock with a high content of saturated hydrocarbons (feedstock No. 4) provides the highest yield of gasoline fraction (45.65 wt%) and wet gas (36.98%). [ABSTRACT FROM AUTHOR]

The paper describes a method for reducing the margin for the quality of automotive gasoline based on the use of predictive models for the process of catalytic cracking and compounding of automotive gasolines sensitive to changes in hydrocarbon composition and physical and chemical properties of processed raw materials, as well as technological modes of operation of industrial apparatuses. Continuous calculation of the individual composition and properties of the mixing components, as well as the constant adjustment of commercial gasoline formulations in real time, allows to receive motor fuels fully complying with the modern ecological standards of EURO-5, as well as to reduce the cost of finished products by 10-12% due to a decrease in the share of high-value flows, as well as the quality margin for the octane number of commercial gasolines, the content of sulfur, aromatic hydrocarbons and benzene in their composition. [ABSTRACT FROM AUTHOR]

The results of the effect of the catalyst circulation ratio on the yield of the gasoline fraction, wet gas, and coke in the catalytic cracking technology for the two industrial units using the mathematical model are present at this paper. The temperature mode to obtain the maximum yield of gasoline and gas is determined taking into account the feedstock composition, types of cracking catalyst, and coke yield in the processing of vacuum distillate from Kazakhstan and West Siberian oil. [ABSTRACT FROM AUTHOR]

Entering the electronic educational resources into the structure of academic studies is important stage to implementation of competency-based approach at preparation of technologists. This paper describes a creation of the computer simulator for student training to effective exploitation the catalytic cracking unit. Computer simulator was built on the basis of mathematical model of catalytic cracking and included as the e-learning tool. Mathematical model was development on the basis of thermodynamically and kinetic approach. The mathematical model of the process was developed and implemented using Delphi 7 software. The calculation result had shown a high adequacy that's allowed to use a mathematical model as a computer simulator for training to effective exploitation the catalytic cracking unit. Developed computer simulator was entered to the cycle of laboratory works. Pedagogical design of the laboratory work was performed using Adobe Dreamweaver CS 5.5 and iSpring Suite 7 software. Computer simulator "Catalytic Cracking" is designed to educate the efficient exploitation of industrial catalytic cracking unit and can be used on Higher Education. [ABSTRACT FROM AUTHOR]