Radiotracer investigation in a pilot-scale fluidized bed coal gasifier (FBCG)

被引：3
|
作者：
Goswami, Sunil [1 ,2 ]
Pant, H. J. [1 ]
Sharma, V. K. [1 ]
Varshney, Lalit [2 ,3 ]
机构：
[1] Bhabha Atom Res Ctr, Isotope & Radiat Applicat Div, Mumbai 400085, Maharashtra, India
[2] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India
[3] Bhabha Atom Res Ctr, Radiat Technol Dev Div, Mumbai 400085, Maharashtra, India
来源：
APPLIED RADIATION AND ISOTOPES | 2019年 / 149卷
关键词：
Gasification; Fluidized bed coal gasifier; Coal particles; Radiotracer; Scintillation detector; Residence time distribution; Mean residence time; Bypassing; Tank-in-series model; RESIDENCE TIME DISTRIBUTION; LIQUID-PHASE; PARTICLES; GASIFICATION; REACTOR; CELL;
D O I：
10.1016/j.apradiso.2019.04.013
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Radiotracer investigations were carried out for measurement and analysis of residence time distribution (RTD) of coal particles in a pilot-scale gasifier fitted with a flat air/steam distributor. Measurements were made at different operating conditions using gold-198 (Au-198) labeled coal particles as a radiotracer. The measured RTDs were treated and mean residence times (MRTs) were determined. Furthermore, the treated RTDs were simulated using a suitably conceptualized mathematical model and detailed information about hydrodynamics of coal particles within the gasifier was obtained. Results of model simulation indicated that the gasifier behaved as an ideal mixer of fine coal particles exiting from the top of the gasifier. A small fraction of the coarser particles was found to be bypassing at ambient temperature.
引用
收藏
页码：22 / 30
页数：9
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