Low Temperature Pyrolysis of an Australian Brown Coal in a Fluidised Bed Reactor

2008 ◽  
Vol 8 (3-4) ◽  
pp. 293-309 ◽  
Author(s):  
L. Shen ◽  
D. K. Zhang ◽  
H. M. Yan ◽  
J. R. Roach ◽  
Q. D. Nguyen
Keyword(s):  
Low Temperature ◽  
Brown Coal ◽  
Fluidised Bed ◽  
Low Temperature Pyrolysis ◽  
Fluidised Bed Reactor

Changes in char structure during the low-temperature pyrolysis in N2 and subsequent gasification in air of Loy Yang brown coal char

Fuel ◽  
2018 ◽  
Vol 212 ◽  
pp. 187-192 ◽  
Author(s):  
Tingting Li ◽  
Lei Zhang ◽  
Li Dong ◽  
Penghua Qiu ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Brown Coal ◽  
Coal Char ◽  
Char Structure ◽  
Low Temperature Pyrolysis

GC-MS Analyzing of Coal Tar of Lignite Briquette from Low Temperature Pyrolysis

2014 ◽  
Vol 472 ◽  
pp. 591-595 ◽  
Author(s):  
Xin Tao Cui ◽  
Yong Fa Zhang ◽  
Dong Liu Dong ◽  
Yu Qiong Zhao
Keyword(s):  
Phenolic Compounds ◽  
Low Temperature ◽  
Brown Coal ◽  
Aromatic Compounds ◽  
Heterocyclic Compounds ◽  
Coal Tar ◽  
Aliphatic Hydrocarbon ◽  
The Other ◽  
Low Temperature Pyrolysis ◽  
Content Of Oxygen

Distillation and GC-MS were employed to analysis the coal tar of low-temperature pyrolysis of lignite briquette by contrasting with standards: the fraction below 340°C in the tar distillates of brown coal tar accounted for 83.30% and the other greater than 340°C is pitch accounted for 16.32%. 34.00% of coal tar are hydrocarbons which are mainly consisted of fat aliphatic hydrocarbon and include few alkene and cycloparaffins. The content of phenolic compounds in coal tar, mainly comes from the fraction below 210°C, is 11.68%. 16.86% of coal tar is aromatic compounds which are mainly composed of substitutive derivative of polyalkylbenzene distributing in all kinds of fractions; and a small amount of aromatic compounds which is concentrated in the fraction below 300°C. The content of oxygen-containing, nitrogen-containing and heterocyclic compounds is 4.47%, 0.57%, 2.11%, respectively.

Characterisation of the products of low temperature pyrolysis of Victorian brown coal in a semi-continuous/flow through system

Fuel ◽  
2018 ◽  
Vol 234 ◽  
pp. 1422-1430 ◽  
Author(s):  
Ying Qi ◽  
Will Hann ◽  
Dirgarini J.N. Subagyono ◽  
Yi Fei ◽  
Marc Marshall ◽  
...  
Keyword(s):  
Low Temperature ◽  
Brown Coal ◽  
Continuous Flow ◽  
Flow Through ◽  
Low Temperature Pyrolysis

Gasification Kinetics of Victorian Brown Coal-Derived Char in Fluidised Bed Reactor

2021 ◽  
pp. 1-24
Author(s):  
Imtenan Sayeed ◽  
Mahmud Arman Kibria ◽  
Sankar Bhattacharya
Keyword(s):  
Activation Energy ◽  
Brown Coal ◽  
Gas Flow ◽  
Oxygen Carrier ◽  
Fluidised Bed ◽  
Co2 Partial Pressure ◽  
Fuel Reactor ◽  
Char Particle ◽  
Fluidised Bed Reactor ◽  
Kinetics Of

Abstract In a chemical looping combustion (CLC) system, gasification kinetics of char holds immense importance being the rate-limiting reaction in the fuel reactor. This paper studied the gasification kinetics of char derived from Victorian Brown Coal (VBC) in a fluidised bed reactor which mimics the fuel reactor conditions of a CLC process. Mass of char, char particle size and gas flow conditions were optimised to ensure the gasification reaction free from mass transfer limitations. Effect of oxygen carrier, hematite, being the bed material was also studied. The experiments were conducted in the temperature range of 800C-950C, which is a typical range for fuel reactor. The experimental results were modelled with the help of grain model (GM) and random pore model (RPM) to analyse the kinetic parameters. Activation energy was found to be around 177 kJ/mol in sand bed and 175.5 kJ/mol in the hematite bed. Reaction in hematite bed was found to be 42% faster on average compared to the reaction in a sand bed. Fastest total conversion of char took as low as 4.1 minutes in hematite bed at 950C. While catalytic effect of hematite was ruled out due to insignificant change in activation energy, it was concluded that increase in CO2 partial pressure at the vicinity of char particle enhanced the reaction rate in the case of hematite bed. This study has generated relevant information for the CLC of Victorian Brown Coal with hematite as the oxygen carrier.

Comparative study of low-temperature pyrolysis and solvent treatment on upgrading and hydro-liquefaction of brown coal

Fuel ◽  
2017 ◽  
Vol 199 ◽  
pp. 598-605 ◽  
Author(s):  
Jingchong Yan ◽  
Zongqing Bai ◽  
Pan Hao ◽  
Jin Bai ◽  
Wen Li
Keyword(s):  
Low Temperature ◽  
Comparative Study ◽  
Brown Coal ◽  
Solvent Treatment ◽  
Low Temperature Pyrolysis

Low-Temperature Pyrolysis of Brown Coal and Brown Coal Containing Iron Hydroxyl Complexes

2006 ◽  
Vol 20 (5) ◽  
pp. 1997-2007 ◽  
Author(s):  
George Domazetis ◽  
Monthida Raoarun ◽  
Bruce D. James
Keyword(s):  
Low Temperature ◽  
Brown Coal ◽  
Low Temperature Pyrolysis

Chemical yields from low-temperature pyrolysis of CCA-treated wood

2009 ◽  
Author(s):  
Qirong Fu ◽  
Dimitris Argyropolous ◽  
Lucian Lucia ◽  
David Tilotta ◽  
Stan Lebow
Keyword(s):  
Low Temperature ◽  
Treated Wood ◽  
Low Temperature Pyrolysis

Preparation of Organic/Inorganic Membrane by PDMS Low-temperature Pyrolysis

2014 ◽  
Vol 29 (2) ◽  
pp. 137-142
Author(s):  
Jiao-Zhu YU ◽  
Lin LI ◽  
Xin JIN ◽  
Ling-Hua DING ◽  
Tong-Hua WANG
Keyword(s):  
Low Temperature ◽  
Inorganic Membrane ◽  
Low Temperature Pyrolysis
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