مدل‌های تشکیل رسوب‌ نمکی در مبدل‌های حرارتی و روش‌های رسوب‌زدایی آن

نوع مقاله : مقاله مروری

نویسندگان

دانشگاه تبریز

چکیده

در این‌تحقیق، به بررسی مشکلات رسوب محلول­های نمک، مدل­های بررسی تشکیل رسوب و روش­های رسوب­زدایی این ترکیبات از مبدل­ها پرداخته شد. محلول‌های نمک، به‌طور گسترده‌ای در بسیاری از فن آوری­های صنعتی استفاده می‌شود، لذا محدودیت اصلی معرفی بسیاری از فن­آوری­های بخار- مایع دما بالا1، برای استفاده در محلول­های نمکی، مشکلات ناشی از رسوب آن­ها در مبدل­های حرارتی است. روش­های رسوب­زدایی این سیال­ها شامل رسوب­زدایی برون‌خط و برخط می­باشد که در این بین، هریک دارای معایب و مزایای مخصوص به‌خود است. در عمل، بسته به شرایط مختلف، ضوابط متعددی تعیین‌کنندۀ مزایا و معایب هر یک از روش‌ها است. هم‌چنین کاهش رسوب بر اساس طراحی سیستم مبدل حرارتی، برای این این سیال­ها نیز می­تواند مشکلات ناشی از رسوب را تا حدی برطرف نماید. از روش­های نوین در رسوب­زدایی می­توان به شوک حرارتی، استفاده از پرتابه­ها، جت آب و رسوب­زدایی هیدرومکانیکی اشاره کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Solid Salt Sedimentation in Heat Exchangers and the Sedimented Salt Removing Methods

نویسندگان [English]

  • S. Zeinali Heris
  • M. Norouzi Gaz-koh
University of Tabriz
چکیده [English]

In the present study, the problems of salt solution sedimentation on heat exchangers, their modelling procedure, and the heat exchanger fouling removal methods based on the related published investigation are reported. The salt solutions are used in many technological industries, and the sedimentation of stable salts is the main limitation of using them, especially in the high-temperature liquid-vapor system. The methods of these salts removing is online and offline fouling cleaning. Each of these methods has their advantageous and disadvantageous. In the practical application, there are multiple criteria considering different conditions. Although, based on the heat exchanger design condition, the solid salt sedimentation decrement can be improved the system fouling problems.

کلیدواژه‌ها [English]

  • heat exchanger
  • Sediment
  • Offline Fouling Method
  • Online Fouling Method
  • Salt Solution
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