کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6636543 | 461134 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ash melting behavior and slag infiltration into alumina refractory simulating co-gasification of coal and biomass
ترجمه فارسی عنوان
رفتار ذوب خاکستری و نفوذ سرباره به مقاوم در برابر آلومینا شبیه سازی همگاز سازی زغال سنگ و زیست توده
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کلمات کلیدی
زغال سنگ قهوه ای، زیست توده، رفتار ذوب ذوب، مقاوم در برابر آلومینا، نفوذ سرباره،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In the present study melting behavior of ashes from German brown coal and biomass (wheat straw) as well as from two artificial mixtures of both has been investigated. The four fuel samples were ashed at 450 °C over a period of 26 h. Ash fusion tests and all other measurements have been executed under reducing atmosphere, simulating gasification conditions. The ash melting and wetting properties have been studied for ash cylinders placed onto an alumina refractory at temperatures up to 1600 °C. Optical microscopy and SEM/EDX studies have been performed to analyze the infiltration of slag into the refractory and related progression. For the ash fusion behavior and surface wetting of the refractory clear distinctions from pure ashes have been detected for the blend with 50 wt.% biomass addition due to the formation of eutectics. From optical microscopy and SEM/EDX images of the sections different infiltration properties and mechanisms have been identified. The qualitative infiltration depth and deceleration of slag infiltration by a formation of solid phases have been provided by FactSage⢠calculations. In these calculations the contact zone between the two materials has been reconstructed by a stepwise change in the amounts of ash and refractory. The experimental results are very well reflected in this model. Finally, the obtained results suggest low corrosive biomass amounts for co-use in the present gasifier types designed for pure coal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 139, 1 January 2015, Pages 457-465
Journal: Fuel - Volume 139, 1 January 2015, Pages 457-465
نویسندگان
Guanjun Zhang, Markus Reinmöller, Mathias Klinger, Bernd Meyer,