Indian Sub-bituminous and Low-Rank Coal Gasification Experiments in a Circulating Fluidized Bed Gasifier Under Air Atmosphere

2020 ◽  
pp. 777-784 ◽  
Author(s):  
Krishna Kant Dwivedi ◽  
Prabhansu ◽  
A. K. Pramanick ◽  
M. K. Karmakar ◽  
P. K. Chatterjee
Keyword(s):  
Fluidized Bed ◽  
Coal Gasification ◽  
Circulating Fluidized Bed ◽  
Low Rank ◽  
Low Rank Coal ◽  
Air Atmosphere ◽  
Fluidized Bed Gasifier

Catalytic effect of ion-exchanged calcium on steam gasification of low-rank coal with a circulating fluidized bed reactor

Fuel ◽  
2018 ◽  
Vol 234 ◽  
pp. 406-413 ◽  
Author(s):  
Naoto Tsubouchi ◽  
Yuuki Mochizuki ◽  
Yuji Shinohara ◽  
Yuu Hanaoka ◽  
Yasuo Ohtsuka ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Catalytic Effect ◽  
Circulating Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Steam Gasification ◽  
Low Rank ◽  
Low Rank Coal

scholarly journals Influence of O2/C molar ratio and coal feeding rate on sulfur release during CFB gasification

2020 ◽  
Vol 194 ◽  
pp. 04044
Author(s):  
Shengxian Xian ◽  
Denghao Jiang ◽  
Yanqi Fan ◽  
Haixia Zhang ◽  
Zhen Chai ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Coal Gasification ◽  
Feeding Rate ◽  
Circulating Fluidized Bed ◽  
Molar Ratio ◽  
Release Behavior ◽  
Far From Equilibrium ◽  
Gaseous Sulfur ◽  
Fluidized Bed Gasifier ◽  
Gasification Temperature

The release behavior of sulfur during coal gasification was studied in a bench-scale self-heated circulating fluidized bed gasifier. With the increase of the O2/C molar ratio, gasification temperature increases, which promotes sulfur release rate and the formation of H2S. The conversion reaction between H2S and COS is far from equilibrium and the yield of COS is excessive. Under the same molar ratio of O2/C, the increase of coal feeding rate can elevate the gasification temperature, promote the release of sulfur and the transformation of gaseous sulfur to H2S.

Tar Emission during Pyrolysis of Low Rank Coal in a Circulating Fluidized Bed Reactor

2018 ◽  
Vol 32 (2) ◽  
pp. 1387-1394 ◽  
Author(s):  
Yasumasa Kawabata ◽  
Hideki Nakagome ◽  
Takaaki Wajima ◽  
Sou Hosokai ◽  
Hiroaki Sato ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Low Rank ◽  
Low Rank Coal

The Gasification of Sewage Sludge in Bubbling Fluidized Beds

2003 ◽  
Author(s):  
A. T. Harris ◽  
S. A. Scott ◽  
J. S. Dennis ◽  
A. N. Hayhurst ◽  
J. F. Davidson
Keyword(s):  
Sewage Sludge ◽  
Fluidized Bed ◽  
Low Rank ◽  
Municipal Sewage ◽  
Low Rank Coal ◽  
Exponential Factor ◽  
Bubbling Fluidized Bed ◽  
Fluidized Bed Gasifier ◽  
The Uk ◽  
Kinetics Of

This paper gives the first measurements from a project investigating the gasification of dried sewage sludge in a laboratory scale, bubbling fluidized bed at atmospheric pressure. The aim of the work was to examine the reactions occurring in a fluidized bed gasifier rather than simply treat the reactor as a ‘black box’. Experiments were performed to investigate the rates of drying, devolatilisation, gasification and combustion. Thermogravimetric analysis, as well as batch fluidized bed experiments using mechanically dewatered, dried and pelletised municipal sewage sludges from different regions in the UK were performed. A comparison was made between the different samples of sludge and a low rank coal and softwood biomass. A distributed activation energy model (DAEM) for interpreting the kinetics of devolatilisation was also investigated. The model was able to reduce the results from several TGA experiments to a single curve characterised by a single parameter, the pre-exponential factor, A.

Control of Agglomeration during Circulating Fluidized Bed Gasification of a South Australian Low-Rank Coal: Pilot Scale Testing

2016 ◽  
Vol 30 (3) ◽  
pp. 1771-1782 ◽  
Author(s):  
Philip J. van Eyk ◽  
Adam Kosminski ◽  
Peter J. Mullinger ◽  
Peter J. Ashman
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Pilot Scale ◽  
Low Rank ◽  
Low Rank Coal

scholarly journals Low-rank coal gasification using a bubbling fluidized bed reactor at low operating temperature

2019 ◽  
Vol 22 (2) ◽  
pp. 99-105
Author(s):  
Sapta Rianda ◽  
◽  
Dedi Yaskuri ◽  
M. Ade A. Efendi ◽  
◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Coal Gasification ◽  
Operating Temperature ◽  
Fluidized Bed Reactor ◽  
Low Rank ◽  
Low Rank Coal ◽  
Bubbling Fluidized Bed

D213 Effect of Operating Condition on Reduction and Reforming of Tar Derived from Pyrolysis of Low Rank Coal in Circulating Fluidized Bed

2015 ◽  
Vol 2015.20 (0) ◽  
pp. 275-276
Author(s):  
Yasumasa KAWABATA ◽  
Takaaki WAJIMA ◽  
Hideki NAKAGOME ◽  
Sou HOSOKAI ◽  
Yoshizo SUZUKI ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Low Rank ◽  
Low Rank Coal ◽  
Operating Condition
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