Grishyn M. Computer-integrated system for controlling the wear of heat exchange tubes of solid fuel steam generators at thermal power plants

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0824U000049

Thesis Registration Form

0824U000049.pdf

Applicant for

Specialization

  • 151 - Автоматизація та приладобудування. Автоматизація та комп’ютерно-інтегровані технології

15-12-2023

Specialized Academic Board

ДФ 41.052.065

Odesa Polytechnic National University

Essay

This dissertation focuses on enhancing methods and models in a computer-integrated system for monitoring the wear of heat exchange tubes in solid fuel steam generators at coal-powered thermal power plants, particularly when dealing with coal of unknown ash composition. It uses current coal quality data for measuring solid mineral impurities and provides various control loops like coal flow distribution and quality checks to minimize costs. Key findings include: 1. Global Coal Industry Complexities: The industry faces challenges like varying coal quality, pricing, and environmental concerns, with developing countries heavily reliant on coal. Transitioning to sustainable energy is difficult due to these diversities. 2. Efficiency in Coal-Fired Power Plants: Efficient power generation hinges on accurately identifying fuel composition and strategizing against damage from refractory compounds in the steam generator's heat exchange tubes. Current analysis methods are insufficient, underscoring the need for advanced diagnostic technologies. 3. Coal Preparation Process Management: A computer-aided automated system enhances efficiency, environmental sustainability, and stability. Accurate coal sampling and quality control are crucial, with fuzzy control algorithms offering operational improvements. 4. Coal Quality and Plant Efficiency: High-quality coal, precise sampling, and advanced diagnostics are vital. Innovations in monitoring and new technologies enhance efficiency, safety, and durability. 5. Adaptive Monitoring of Tube Wear: Real-time, adaptive approaches are essential for monitoring heat exchange tube wear in steam generators, as existing methods are inefficient. The dissertation comprises four chapters: 1. First Chapter: It examines the use of computer-integrated control systems (CICS) for monitoring tube wear in drum steam generators at thermal power plants (TPP). It highlights the industry's complexities and the need for efficient fuel identification and damage minimization strategies. 2. Second Chapter: Develops a mathematical model considering fuel consumption, fly ash, and mineral impurities, aiming to maximize tube life and minimize costs. It improves understanding of coal quality's impact on tube wear and utilizes the Cochran sampling rule for better coal quality control. 3. Third Chapter: Introduces an automated method for producing high-quality coal at TPPs. It involves a twelve-step strategy for setting up a fuzzy logic-based controller, focusing on coal flow management and real-time operation adjustments based on coal quality. 4. Fourth Chapter: Establishes a model-based CICS for tube surface wear, which allocates coal flow based on identified impurities and automated sampling settings. Computational experiments demonstrate the system's efficacy in reducing operating costs and increasing the lifespan of heat exchange tubes. In summary, the dissertation presents a comprehensive approach to managing the wear of heat exchange tubes in thermal power plants, leveraging advanced models, real-time data analysis, and innovative control systems to enhance efficiency, reduce costs, and extend equipment lifespan.

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Research papers

Грішин М.В., Беглов К.В. Оцінка ефективності збагачення палива для зменшення ризику витрат ТЕС // Вчені записки ТНУ імені В.І. Вернадського. Серія: Технічні науки. 2021. Том. 32 (71). № 3. С. 82-89. DOI: https://doi.org/10.32838/2663-5941/2021.3/14.

Grishyn M.V., Tarakhtij O.S. Simulation modelling of sampling and replacement of coal suppliers for thermal power plants // Applied Aspects of Information Technology. 2023. Vol.6 No. 2. P. 175–189. DOI: https://doi.org/10.15276/aait.06.2023.13.

Грішин М.В., Беглов К.В. Удосконалення автоматизованої системи моніторингу зменшення ризику критичного пошкодження поверхні теплообміну парового котла вугільної ТЕС шляхом контролю зольності вугілля // Вчені записки ТНУ імені В.І. Вернадського. Серія: Технічні науки. 2023. Том 34 (73) №3: С. 115-122. DOI: https://doi.org/10.32782/2663-5941/2023.3.1/18.

Grishyn M. V., Matiko F.D., Tarakhtij O. S., Zhanko K. O., Shynder A. A. Mathematical Model of a Steam Boiler As a Control Plant // Applied Aspects of Information Technology. 2023; Vol.6 No.3: 254–257. DOI: https://doi.org/10.15276/aait.06.2023.17.

Grishyn M. V., Matiko F. D., Tarakhtij O. S., Zhanko K. O., Vereskun S. O. Automated solid fuel quality control and monitoring system // Herald of Advanced Information Technology. 2023; Vol.6 No.3 : 215–226. DOI: https://doi.org/10.15276/hait.06.2023.14.

Maksym Grishyn, Konstantin Beglov. Controlling the wear resistance of the heat exchange surface of a steam boiler of a TPP by controlling the quality of steam coal through the distribution of coal flows // International scientific and technical conference automation, computer-integrated technologies and problems of energy efficiency in industry and agriculture, Kropyvnytskyi, Ukraine. 2022. P. 12-13. URL: https://www.kntu.kr.ua/doc/science/zahody/vikl/2022/10-tez.pdf.

Grishyn M.V. Wear control of heat exchange surface tubes of a TPP steam generator by means of automatic regulation of coal fuel abrasiveness // Science and technology: problems, prospects and innovations. Proceedings of the 9th International scientific and practical conference. CPN Publishing Group. Osaka, Japan. 2023. P. 143-153. URL: https://sci-conf.com.ua/ix-mizhnarodna-naukovo-praktichna-konferentsiya-science-and-technology-problems-prospects-and-innovations-8-10-06-2023-osaka-yaponiya-arhiv/.

Grishyn M. V. Information on fuel properties for the automated control circuits of the furnace as a component of the coal quality assurance method // European scientific congress. Proceedings of the 5th International scientific and practical conference. Barca Academy Publishing. Madrid, Spain. 2023. P. 85-95. URL: https://sci-conf.com.ua/v-mizhnarodna-naukovo-praktichna-konferentsiya-european-scientific-congress-12-14-06-2023-madrid-ispaniya-arhiv.

Grishyn M.V. Adaptive computer-integrated control system for coal quality assurance using the analysis of current samples of fuel // Progressive research in the modern world. Proceedings of the 10th International scientific and practical conference. BoScience Publisher. Boston, USA. 2023. P. 103-114. URL: https://sci-conf.com.ua/x-mizhnarodna-naukovo-praktichna-konferentsiya-progressive-research-in-the-modern-world-22-24-06-2023-boston-ssha-arhiv.

Maksym Grishyn. Modelling of automated steam coal transportation and enrichment systems for efficient operation and cost reduction of thermal power plants // Scientific Collection «InterConf+». 2023. Vol 34(159). P. 271–285. DOI: https://doi.org/10.51582/interconf.19-20.06.2023.027.

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