کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997710 1459916 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physicochemical evolution during rice straw and coal co-pyrolysis and its effect on co-gasification reactivity
ترجمه فارسی عنوان
تکامل فیزیکوشیمیایی در طول کاه برنج و کوپرولیز زغال سنگ و اثر آن بر واکنش گاز مجزا
کلمات کلیدی
تکامل فیزیکوشیمیایی، کمپیریلیس، همگاز سازی، واکنش پذیری،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Physicochemical evolution in coal-biomass co-pyrolysis was quantitatively measured.
- Order degree of co-pyrolyzed chars was distinctly promoted at high coal proportion.
- Co-pyrolysis obviously enhanced active K transformation at high coal proportion.
- Co-pyrolysis impact on co-gasification was related with physicochemical evolution.

Physicochemical evolution (i.e. pore structure variation, carbon structure change and active AAEM transformation) during rice straw (RS) and Shenfu bituminous coal (SF) co-pyrolysis was quantitatively determined in this work. Moreover, the corresponding char gasification was conducted using a thermogravimetric analyzer (TGA) and relative reactivity was proposed to quantify the co-pyrolysis impact on co-gasification reactivity. The results showed that the development of pore structure in co-pyrolyzed chars was first inhibited and then enhanced with the decrease of SF proportion. The promotion effect of co-pyrolysis on order degree of co-pyrolyzed chars gradually weakened with increasing RS proportion. Co-pyrolysis mainly enhanced active K transformation in co-pyrolyzed chars and the promotion effect was alleviated with increasing RS proportion. The inhibition effect of co-pyrolysis on co-gasification reactivity weakened with increasing RS proportion and gasification temperature, which was mainly attributed to the combination of carbon structure evolution and active AAEM transformation in co-pyrolysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 227, March 2017, Pages 345-352
نویسندگان
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