Citation: LI Feng-hai, LI Zhen-zhu, HUANG Jie-jie, FANG Yi-tian. Characteristics of fine chars from fluidized bed gasification of Shenmu coal[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(10): 1153-1159. shu

Characteristics of fine chars from fluidized bed gasification of Shenmu coal

1.
1. Department of Chemistry and Chemical Engineering, Heze University, Heze 274015, China;

Corresponding author: FANG Yi-tian,
Received Date: 20 May 2014
Available Online: 13 August 2014
Fund Project: 中国科学院战略性先导项目专项(XDA07050103) (XDA07050103) 煤转化国家重点实验室开放基金(J12-13-102)。 (J12-13-102)

The ash fusion characteristics, particle-size distribution and gasification reactivity of Shenmu coal (SM) fine chars from ash agglomerate fluidized bed gasification were explored by ash fusion point analyzer, scanning electron microscopy equipped with energy dispersive X-ray analysis (SEM-EDX), and thermo-gravimetric analyzer. The results show that the decrease in basic ingredients (e.g. iron and calcium) and the increase in acidic ingredients make the ash fusion temperature (AFT) of SM fine chars lower than that of SM. There is a wide particle-size distribution in SM fine chars, which shows a significant multi-peak distribution, and a large difference of the elemental distribution in fine char particles with different sizes. The moisture content is lower and ash content is higher in fine power than that in SM, respectively. SM fine char has higher surface area than that of SM char, and relatively rich in meso-pores and macro-pores, which results in its higher gasification reactivity than SM char.
- Shenmu char,
- fluidized bed gasification,
- fine chars,
- fusion characteristics,
- gasification reactivity
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