کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4768861 | 1425380 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Regulation of ash-fusion behaviors for high ash-fusion-temperature coal by coal blending
ترجمه فارسی عنوان
مقررات رفتار ذرات خاکستر برای ذغال سنگ ذغال سنگ بالا توسط ترکیب ذغال سنگ
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کلمات کلیدی
مقررات، رفتار همجوشی، ذغال سنگ بالا ذوب خاکستری، ترکیب زغال سنگ،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Blending is a promising method to modify the ash-fusion characteristics of coal to meet gasification requirements. To investigate the variation in ash-fusion behavior for high ash-fusion-temperature (AFT) coal through coal blending and its regulating mechanism, the ash-chemistry characteristics of four coals (Nantun, Pengzhuang, Biaodian, and Xiangyuan) were analyzed. Mineral-transformation behaviors in the mixed ashes were investigated by X-ray powder diffractometry using normalized reference intensity ratio software, scanning electron microscopy analyzer equipped with energy-dispersive X-ray spectrometry, and FactSage software. Pengzhuang and Biaodian coals, AFTs meet entrained-flow gasifier requirements when the Xiangyuan mass ratio reaches 20%. The Nantun requires a Xiangyuan mass ratio of XY >Â 30% because of its high aluminum oxide content. The required Xiangyuan optimal blending mass ratio is 40%-70% for the three high AFT coals to meet gasification requirements in the entrained-flow gasifier. An increased Xiangyuan mass ratio leads to decreasing contents of high melting-point mullite and silica and increasing contents of low melting-point anorthite, hercynite, gehlenite, and hedenbergite. Amorphous matter in three mixed ash types resulted in a decrease in their AFTs. The variation in liquid phase under certain conditions reflects the change in AFT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 166, November 2017, Pages 131-139
Journal: Fuel Processing Technology - Volume 166, November 2017, Pages 131-139
نویسندگان
Fenghai Li, Xiuwei Ma, Meiling Xu, Yitian Fang,