کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147866 | 1497389 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gasification of indole in supercritical water: Nitrogen transformation mechanisms and kinetics
ترجمه فارسی عنوان
گازپرویزاسیون اندول در آب فوق بحرانی: مکانیزم های تبدیل نیتروژن و سینتیک
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کلمات کلیدی
گازسیون فوق بحرانی، زغال سنگ، اندول، نیتروژن، دگرگونی، سینتیک،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Nitrogen is an important element related to coal conversion process due to its considerable impact on the environment. In this study, indole, a nitrogen-containing compound of coal, was utilized to explore nitrogen transformation during supercritical water gasification. Experiments were conducted with K2CO3 as catalyst under temperature conditions from 650 °C to 750 °C, pressure of 25 MPa, and residence time from 1 min to 30 min with feedstock concentration of 2 wt%; products and nitrogen transformation characteristics were then investigated in detail. First, we found that carbon gasification efficiency of 95.89% was obtained under conditions of 750 °C, 25 MPa for 30 min, and that gaseous products mainly contained H2, CO, CO2 and CH4. Nitrogen-containing products were not detected in gaseous products. Second, the main liquid intermediate organic products were phenol, aniline, and other nitrogen-containing compounds, and the liquid inorganic product was ammonia. Then a reaction pathway of indole gasification in supercritical water was proposed. The quantitative kinetic model for describing the gaseous products and nitrogen transformation mechanisms of indole was developed. The activation energy of carbon gasification reaction with K2CO3 as catalyst was 209.1 ± 33.2 kJ/mol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 36, 28 September 2016, Pages 15985-15997
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 36, 28 September 2016, Pages 15985-15997
نویسندگان
Shanke Liu, Hui Jin, Wenwen Wei, Liejin Guo,