نشریه علمی فرآیند نو

نشریه علمی فرآیند نو

پایش پارامترهای فیزیکوشیمیایی و رسوبات برج خنک کننده هلر نیروگاه: بررسی علل تخریب و ارائه راهکارهای پیشنهادی جهت کاهش خوردگی

نوع مقاله : پژوهشی

نویسندگان
محسن اسماعیل پور 1
عباس یوسف پور 2
مجید قهرمان افشار 2
علی اکبر اصغری نژاد 2
حسین قاسمی نژاد 3
1 پژوهشگاه نیرو، گروه پژوهشی شیمی و فرایند
2 استادیار، گروه پژوهشی شیمی و فرآیند، پژوهشگاه نیرو، تهران، ایران
3 گروه پژوهشی شیمی و فرآیند، پژوهشگاه نیرو، تهران، ایران
10.22034/farayandno.2026.2096472.2073
چکیده
جلوگیری از خوردگی و اصلاح الگوی انرژی به‌عنوان اولویت­های اصلی صنعت بویژه صنعت برق و نیروگاه­های کشور مطرح می­باشند. ازاینرو نظارت و ارزیابی بر اجزا سازه­ها، تجهیزات، واحدهای فرایندی و امکانات در راستای پایش خوردگی به‌منظور کارایی دارایی­ها و افزایش عمر توأم با کاهش هزینه­های جایگزینی و افزایش ایمنی از اهمیت بالایی برخوردار می­باشد. از‌آنجا که پدیده خوردگی همواره می‌تواند در تأسیسات نیروگاهی خسارات کلانی را به‌وجود آورد، توانایی آزمودن و یا پایش خوردگی تجهیزات کلیدی مانند چرخه خنک­سازی و کندانسور در نیروگاه‌های حرارتی ازاهمیت بالایی برخوردار است. برای این‌منظور می­بایست به صورت پیوسته و منظم میزان آنیون­ها، کاتیون­ها و پارامترهای مؤثر آب چرخه خنک­کن نیروگاهی کنترل شود. بنابراین در این پژوهش، ابتدا به بررسی و ارزیابی پارامترهای مؤثر در سیکل آب سیستم خنک­کننده خشک (هلر) یک نیروگاه منتخب خواهیم پرداخت. سپس با توجه به آنالیز رسوب زیرکش کندانسور برج خنک­کننده خشک (آزمون­های XRF و XRD) به بررسی نوع خوردگی­های حادث شده و ارائه راهکارهای پیشنهادی جهت کنترل و کاهش خوردگی خواهیم پرداخت. نتایج این پژوهش نشان می­دهد که عدم کنترل پارامترهایی همچون pH و اکسیژن به عنوان علل اصلی در تشدید خوردگی آلومینیوم مطرح می­باشند و تغییر رژیم شیمیایی با بکارگیری از بازدارنده­های خوردگی همچون مولیبدات، تری­آزول تولیل و هیدرازین (حذف اکسیژن) در کنترل و کاهش خوردگی در سیستم خنک­کن خشک این نیروگاه تأثیر بسزایی دارد.
کلیدواژه‌ها
نیروگاه
پارامترهای فیزیکوشیمیایی
رسوب سیستم خنک­کننده
برج هلر
خوردگی
آنالیزهای XRD و XRF
موضوعات

عنوان مقاله English

Monitoring of physicochemical parameters and sediments of the cooling tower of the Heller power plant: investigating the causes of destruction and providing suggested solutions to reduce corrosion

نویسندگان English

mohsen esmaeilpour 1
Abbas Yousefpour 2
Majid Ghahraman Afshar 2
Aliakbar Asgharinezhad 2
Hossein Ghaseminejad 3
1 Chemistry and Process Research Department, Niroo Research Institute (NRI), Tehran, Iran
2 Assistant Professor, Chemistry and Process Research Department, Niroo Research Institute (NRI), Tehran, Iran
3 Chemistry and Process Research Department, Niroo Research Institute (NRI), Tehran, Iran
چکیده English

Preventing corrosion and reforming the energy model are the main priorities of the industry, especially the electricity industry and power plants in the country. Therefore, monitoring and evaluating structural components, equipment, process units, and facilities for corrosion monitoring is of great importance in order to improve asset efficiency and increase life, while reducing replacement costs and increasing safety. Since corrosion can always cause major damage in power plant facilities, the ability to test or monitor corrosion of key equipment such as cooling cycles and condensers in thermal power plants is of great importance. For this purpose, the levels of anions, cations, and effective parameters of the power plant cooling cycle water must be continuously and regularly monitored. Therefore, in this study, we will first examine and evaluate the effective parameters in the water cycle of the dry cooling system (Heller) of a selected power plant. Then, based on the analysis of the sediment under the condenser of the dry cooling tower (XRF and XRD tests), we will examine the type of corrosion that has occurred and present suggested solutions to control and reduce corrosion. The results of this study show that the lack of control of parameters such as pH and oxygen are the main causes of the intensification of aluminum corrosion, and changing the chemical regime by using corrosion inhibitors such as molybdate, triazoletolyl, and hydrazine (removal of oxygen) has a significant effect on controlling and reducing corrosion in the dry cooling system of this power plant.

کلیدواژه‌ها English

Power Plant
Physicochemical Parameters
Cooling System Sedimentation
Heller Tower
Corrosion
XRD and XRF Analyses
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