کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
205256 461102 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An enhancement method for the elemental mercury removal from coal-fired flue gas based on novel discharge activation reactor
ترجمه فارسی عنوان
یک روش افزایش برای حذف جیوه عنصری از گاز دودکش برقی زغال سنگ بر اساس رآکتور فعال سازی ترمینال تخلیه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• HCl showed a positive effect on the oxidation of Hg0 in ESP electric field.
• The reaction mechanism between HCl and Hg0 in ESP electric field was investigated.
• A novel discharge activation reactor was employed to improve Hg0 removal.

Gas-phase oxidation of elemental mercury (Hg0) from flue gas by simulated electrostatic precipitators (ESP) electric field was explored in this paper. In order to enhance the removal efficiency of Hg0 by ESP electric filed, a novel discharge activation reactor was designed and employed. The influence of HCl concentration, temperature, fly ash, and flue gas components on the Hg0 removal were also considered, respectively. The Hg0 removal efficiency increased with the increase of HCl concentration, temperature and discharge voltage. It has also been found that O2, H2O and fly ash showed a light promotion on the removal of Hg0 while NO and SO2 had a slight inhibition effect on Hg0 oxidation. Furthermore, the novel discharge activation reactor could improve the generation of reactive chemical species, such as Cl· or Cl2, which facilitated the mercury removal. At the reaction temperature of 413 K, about 60% Hg0 could be removed from simulated flue gas under 25.0 kV in presence of 10.0 ppmv HCl. When the novel discharge activation reactor was used, the Hg0 removal efficiency increased to about 80% at the same experimental conditions. It appeared to be a promising technique to enhance the removal of Hg0 by ESP.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 171, 1 May 2016, Pages 59–64
نویسندگان
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