Prediction of residue coke content and operating modes of regenerator in the catalytic cracking technology

Nazarova, Galina; Ivashkina, Elena; Shafran, Tatyana; Oreshina, Alexandra; Сейтенова, Г. Ж.

doi:10.1080/10916466.2020.1825966

Cited by 6 publications

(6 citation statements)

References 22 publications

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“…Time of exposure is a parameter determined to comply with industrial needs in terms of coke removal and catalytic activity recovery. For economic reasons, optimization studies of oxidation processes tend to maximize catalytic activity recovery, which is correlated to coke removal, and to minimize time on stream by variation of all the aforementioned parameters [120]. [119].…”

Section: Operating Parametersmentioning

confidence: 99%

Deactivation and Regeneration of Zeolite Catalysts Used in Pyrolysis of Plastic Wastes—A Process and Analytical Review

2021

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In catalytic industrial processes, coke deposition remains a major drawback for solid catalysts use as it causes catalyst deactivation. Extensive study of this phenomenon over the last decades has provided a better understanding of coke behavior in a great number of processes. Among them, catalytic pyrolysis of plastics, which has been identified as a promising process for waste revalorization, is given particular attention in this paper. Combined economic and environmental concerns rose the necessity to restore catalytic activity by recovering deactivated catalysts. Consequently, various regeneration processes have been investigated over the years and development of an efficient and sustainable process remains an industrial challenge. Coke removal can be achieved via several chemical processes, such as oxidation, gasification, and hydrogenation. This review focuses on oxidative treatments for catalyst regeneration, covering the current progress of oxidation treatments and presenting advantages and drawbacks for each method. Molecular oxidation with oxygen and ozone, as well as advanced oxidation processes with the formation of OH radicals, are detailed to provide a deep understanding of the mechanisms and kinetics involved (direct and indirect oxidation, reaction rates and selectivity, diffusion, and mass transfer). Finally, this paper summarizes all relevant analytical techniques that can be used to characterize deactivated and regenerated solid catalysts: XRD, N2 adsorption-desorption, SEM, NH3-TPD, elemental analysis, IR. Analytical techniques are classified according to the type of information they provide, such as structural characteristics, elemental composition, or chemical properties. In function of the investigated property, this overall tool is useful and easy-to-use to determine the adequate analysis.

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Section: Operating Parametersmentioning

confidence: 99%

Deactivation and Regeneration of Zeolite Catalysts Used in Pyrolysis of Plastic Wastes—A Process and Analytical Review

2021

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“…In their work, in addition to coking, the authors describe other undesirable thermal cracking reactions that occur in a high-temperature section of a riser. Understanding of kinetics and thermodynamics of the industrial FCC process is also the focus of our recent works [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Development of a Two‐Fluid Hydrodynamic Model for a Riser Reactor

et al. 2022

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ANSYS Fluent is used to examine the mixing of catalyst zeolite particles with petroleum feedstock and water vapor in a fluid catalytic cracking (FCC) riser. A two-fluid model is developed for tracking catalyst particles and gas mixture in a riser, modeling the granular and gaseous phases as two interpenetrating continua. The hydrodynamic flows are analyzed with the aim to single out the principal physical effects that determine the distribution of particles. The results are compared with a study that is based on a non-isothermal reactive model. It is demonstrated that the simplistic purely hydrodynamic model generates similar flow fields. The developed model is valuable for improvements of modern FCC risers. The model is applied for understanding the hydrodynamics of an S-200 KT-1/1 industrial unit.

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“…The growth of global competition in the industry will cause changes associated with the transition to more environmentally friendly production, changes in equipment and the quality of technological processes [18,19]. According to experts' estimates [20][21][22] and forecasts based on them, production will become more automated and robotic.…”

Section: Discussion Of the Results Of Studying The Implementation Of ...mentioning

confidence: 99%

“…Considering individual segments of metallurgical enterprises, the modernization of metallurgical industries entails the expansion of related IT projects. According to [18], with the introduction of technologies aimed at automating production, there is an increase in demand for information storage and processing systems, secure information transmission systems, and business process automation solutions. Particularly relevant are requests for ensuring the safety of corporate data -backup storage systems, copying corporate data to the cloud, data cyber protection technologies.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Importance of the integrated manufacturing execution system for a metallurgical enterprise

Kurmanov

2022

EEJET

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The object of the study is Manufacturing Execution System. The relevance of the study is conditioned by the fact that the metallurgical industry has been demonstrating a high level of volatility in the global market over the past few years. The issue of the effectiveness of the metallurgical enterprise is directly related to ensuring environmental safety. The purpose of the study is to consider how the Manufacturing Execution System (MES) operates in the metallurgical industry and highlight its features, offering recommendations aimed at improving operational efficiency with the introduction of MES systems at enterprises of the metallurgical industry of the Republic of Kazakhstan. The following methods were used in the study: analysis, synthesis, comparison, graphical representation of data. Using the example of the Magnitogorsk Iron and Steel Works, the study examined the relationship between MES and APCS (Automated Process Control System), highlighted the requirements for the transition from individual management of particular cases of technological rules and restrictions to the digitization of general algorithms. It was defined that the advantages of a production system include its fast payback. Also, it was determined that the MES system allows automating production operations and information support, carrying out operational planning, accounting for production and quality of metal products, tracking the history of each product, managing equipment, and analyzing performance. In addition, the recommendations that can be used as a basis for creating an enterprise development program, increasing the level of productivity, therefore, reducing the cost of the enterprise's products, were developed

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Prediction of residue coke content and operating modes of regenerator in the catalytic cracking technology

Cited by 6 publications

References 22 publications

Deactivation and Regeneration of Zeolite Catalysts Used in Pyrolysis of Plastic Wastes—A Process and Analytical Review

Deactivation and Regeneration of Zeolite Catalysts Used in Pyrolysis of Plastic Wastes—A Process and Analytical Review

Development of a Two‐Fluid Hydrodynamic Model for a Riser Reactor

Importance of the integrated manufacturing execution system for a metallurgical enterprise

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