Deactivation of Activated Alumina Adsorbents Used for H۲S Removal from Olefin-containing Streams
- سال انتشار: 1402
- محل انتشار: مجله علوم و فن آوری نفت، دوره: 13، شماره: 3
- کد COI اختصاصی: JR_JPSTR-13-3_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 59
نویسندگان
Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Iran University of Science and Technology, School of Chemical, Petroleum and Gas Engineering, Tehran, Iran
Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
چکیده
An oligomer produced from unsaturated and reactive components (green oil) is formed when hydrogen sulfide (H۲S) is removed from the exhaust stream of the methyl tert-butyl ether (MTBE) plant. A remedy to minimize this contaminant formation is using adsorbents with low reactivity toward the olefinic precursors. Here, the green oil formation on the surface of different types of commercial alumina is studied. Results confirm that the regular commercially activated alumina has low H۲S adsorption capacity. Still, the alumina alkalized with ۳.۹۸ wt.% of Na۲O has a breakthrough time of more than ۲۹ h and stable performance in a cyclic operation. Moreover, the promoted alumina with a wide pore diameter (about ۹ nm) and low surface area (about ۲۱۵ m۲/g) is less susceptible to deactivation by forming green oil. It is supposed that the capillary condensation of C۳/C۴ unsaturated compounds and acidic sites of the alumina intensify the oligomerization inside the pores of an adsorbent.کلیدواژه ها
Green oil, Activated alumina, Adsorption, Methyl tert-butyl ether, Hydrogen Sulfideاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.