Influence of coal ash on CO2 gasification reactivity of corn stalk char

Zhang，Heng1,2; Li，Junguo3; Yang，Xin4; Song，Shuangshuang1; Wang，Zhiqing1; Huang，Jiejie1; Zhang，Yongqi1; Fang，Yitian1

2020-03-01

10.1016/j.renene.2019.10.009

RENEWABLE ENERGY   影响因子和分区

0960-1481

1879-0682

The effect of added coal ash on the gasification behavior of corn stalk char by using the thermalgravimetric analysis and a lab-scale horizontal fixed bed furnace was investigated. For comparison, synthetic ash with different chemical composition was used for studying the effect of difference ash composition on promoting/inhibiting the gasification reactivity. The results show that the slagging-control preferred coal ash additive has a negative impact on the gasification performance. Interestingly, a relatively less slagging-control preferred coal ash additive has a beneficial impact on promoting the gasification performance under low gasification temperature. This could be due to the difference composition between the two coal ash additives, where the former coal ash type has much lower content in the calcium and iron. In addition, the findings in the synthetic ash suggest that iron can have a better performance in promoting gasification than calcium/magnesium. Two types of coal ash show an inhibiting effect under higher temperature due to temperature might be the dominant factor and the restraining effect of additive. These observations are also supported by the evolution of char structure by using the Raman spectroscopy. Further, the modified random pore model can correlate well with the gasification kinetics data.

Biomass Coal ash additive Gasification Kinetic parameters Metal catalysts

EI ; SCI

英语

通讯

Chinese Academy of Sciences[DNL180205] ; National Natural Science Foundation of China[21506242]

Science & Technology - Other Topics ; Energy & Fuels

Green & Sustainable Science & Technology ; Energy & Fuels

WOS:000527403300065

Elsevier Ltd

20194107518564

Additives ; Biomass ; Calcium ; Catalysts ; Coal ; Coal ash ; Iron ; Kinetic parameters ; Thermogravimetric analysis

Solid Fuels:524 ; Iron:545.1 ; Alkaline Earth Metals:549.2 ; Chemistry:801 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Classical Physics; Quantum Theory; Relativity:931

ENGINEERING

2-s2.0-85072991317

Scopus

1.State Key Laboratory of Coal ConversionInstitute of Coal ChemistryChinese Academy of Sciences,Taiyuan,030001,China
2.University of Chinese Academy of Sciences,Beijing,100049,China
3.Academy for Advanced Interdisciplinary StudiesDepartment of ChemistrySouthern University of Science and Technology,Shenzhen,518055,China
4.Department of Engineering ScienceUniversity of Oxford,Oxford,OX2 0ES,United Kingdom

Zhang，Heng,Li，Junguo,Yang，Xin,et al. Influence of coal ash on CO2 gasification reactivity of corn stalk char[J]. RENEWABLE ENERGY,2020,147:2056-2063.

Zhang，Heng.,Li，Junguo.,Yang，Xin.,Song，Shuangshuang.,Wang，Zhiqing.,...&Fang，Yitian.(2020).Influence of coal ash on CO2 gasification reactivity of corn stalk char.RENEWABLE ENERGY,147,2056-2063.

Zhang，Heng,et al."Influence of coal ash on CO2 gasification reactivity of corn stalk char".RENEWABLE ENERGY 147(2020):2056-2063.