بسته بندی شیمیایی برای پالایش روغن

2025-06-27

در عملیات واحدهای شیمیایی مانند تقطیر ، جذب و استخراج در شرکت های پالایش نفت ، بسته بندی های شیمیایی با عملکرد خاص برای بهینه سازی راندمان انتقال جرم و حرارت مورد نیاز است. در زیر شرح مفصلی از انواع متداول بسته بندی های شیمیایی و الزامات فنی آنها ارائه شده است:

I. انواع متداول بسته بندی های شیمیایی در پالایش نفت enterprises

1 . حلقه ای شکل packings

Raschig حلقه: ساختار ساده ، بیشتر از سرامیک ، فلز یا پلاستیک ساخته شده است. در اصل در برج های تقطیر و جذب استفاده می شود ، اما با مقاومت بالا و راندمان پایین. در حال حاضر ، آنها به تدریج در حال حذف شدن هستند.

حلقه پال: دو لایه سوراخ مستطیلی روی دیواره حلقه راشیگ باز می شود و تیغه های منحنی داخلی توزیع گاز-مایع را افزایش می دهند و مقاومت را تقریباً 50 ٪ کاهش می دهند و راندمان را افزایش می دهند. 30 درصد مواد فلزی (مانند فولاد ضد زنگ) برای محیط های با دمای بالا ، فشار بالا و حاوی گوگرد (مانند واحدهای هیدروژناسیون) مناسب هستند. راندمان انتقال جرم 10 تا 20 درصد بیشتر از Pall Ring است و اغلب در بخش تقطیر اولیه حوله های تقطیر با فشار ثابت نفت خام استفاده می شود.

حلقه شکل. packings

Arc زین (زین برل): مواد سرامیکی ، با سطح منحنی. توزیع مایع یکنواخت تر از بسته بندی های حلقه ای شکل است ، اما مستعد انباشته شدن است و در نتیجه کارایی کاهش می یابد. اکنون کمتر مورد استفاده قرار می گیرد.

زین Intalox (زین مستطیلی): ساختار متقارن زین قوس را برای جلوگیری از انباشته شدن بهبود می بخشد ، نسبت فضای خالی بالاتری دارد و در برابر فرسایش مقاوم است. برای برج های جذب (مانند برج های گوگرد زدایی) مناسب است و مواد سرامیکی در برابر محیط های اسیدی (مانند HS) مقاوم است.

Metal حلقه Intalox (زین فلزی): مزایای بسته بندی حلقه ای شکل و زینی شکل را ترکیب می کند ، دارای نرخ باز شدن بالا ، سرعت جریان زیاد و افت فشار کم است. برای برج شکنش اصلی واحدهای ترک کاتالیزوری و جابجایی مخلوط های نفت و گاز با بار بالا مناسب است.

3 . بسته بندی معمولی پلاستیکی packings

Material PP ، PVC ، و غیره ، سبک وزن ، مقاوم در برابر خوردگی در دمای پایین ، مناسب برای برج های گوگرد زدایی در دمای معمولی (مانند روش اتانول آمین برای حذف HS) ، اما در برابر دماهای بالا (معمولا 120 ℃) مقاوم نیست. آنها کمتر در پالایش نفت استفاده می شوند.

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