کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10274801 | 461725 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Speciation of mercury in fly ashes by temperature programmed decomposition
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Speciation of mercury in fly ashes by temperature programmed decomposition Speciation of mercury in fly ashes by temperature programmed decomposition](/preview/png/10274801.png)
چکیده انگلیسی
Mercury (Hg) is a toxic trace element which is emitted mostly in gas phase during coal combustion, although some Hg compounds may be retained in the fly ashes depending on the characteristics of the ashes and process conditions. To improve the retention of Hg in the fly ashes a good knowledge of the capture mechanism and Hg species present in the fly ashes is essential. The temperature programmed decomposition technique was chosen to identify the Hg species present in fly ashes obtained from two Pulverized Coal Combustion (PCC) plants and a Fluidized Bed Combustion (FBC) plant. The fly ashes were then used as Hg sorbents in a simulated flue gas of coal combustion and gasification. The Hg compounds found in the fly ash from the FBC plant after elemental mercury retention were mainly HgCl2 and HgSO4. The Hg species present in the two fly ashes from the two PCC plants were HgCl2 and Hg0. The Hg species formed in the coal gasification atmosphere was HgS for all three fly ashes. The only Hg compound identified in the fly ashes after the retention of mercury chloride was HgCl2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 92, Issue 3, March 2011, Pages 707-711
Journal: Fuel Processing Technology - Volume 92, Issue 3, March 2011, Pages 707-711
نویسندگان
M. Antonia Lopez-Anton, Ron Perry, Patricia Abad-Valle, Mercedes DÃaz-Somoano, M. Rosa MartÃnez-Tarazona, M. Mercedes Maroto-Valer,