کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6630140 | 1424930 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study on characteristics of pressurized grade conversion of coal
ترجمه فارسی عنوان
بررسی تجربی بر روی ویژگی های تبدیل مقادیر فشار ذغال سنگ
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کلمات کلیدی
زغال سنگ، تبدیل درجه حرارت تحت فشار، نیمه کک، پیرولیز، کیفیت تار، انتشار گاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In order to investigate the characteristics of pressurized grade conversion of coal, an experimental system was established, and the general properties of coal and semi-coke were studied by using the BET and SEM methods. Then, the effects of the following variables on production yields, pollutant gas emission, and the quality of high-grade raw materials such as tar and coal gas were investigated in the ranges as specified: pyrolysis temperature (500-700â¯Â°C), pressure (0.1-0.5â¯MPa), pyrolysis atmosphere (N2 and coal gas) and particle size (0-3â¯mm and 0-6â¯mm). It was found that when the coal pyrolysis temperature is 600â¯Â°C, the tar yield reaches its maximum, and the coal gas atmosphere and pressure are both helpful to increase the tar and semi-coke yield as well as to improve the quality of tar and the heat value of coal gas. With the pressure increasing, the NO and SO2 emissions decrease. As a result of the pressure increase, the combustion temperature of the semi-coke decreases, resulting in the reduction of high temperature minerals and the increase of low temperature minerals in ash. The results of this study will be useful to address some of the presently existing issues in design, optimization and scale up of pressurized grade conversion of coal processes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 234, 15 December 2018, Pages 965-973
Journal: Fuel - Volume 234, 15 December 2018, Pages 965-973
نویسندگان
Guanwen Zhou, Wenqi Zhong, Aibing Yu, Yuanyuan Dou, Junping Yin,