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

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.

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

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

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

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

scholarly journals High- and low-temperature pyrolysis profiles describe volatile organic compound emissions from western US wildfire fuels

2018 ◽  
Author(s):  
Kanako Sekimoto ◽  
Abigail R. Koss ◽  
Jessica B. Gilman ◽  
Vanessa Selimovic ◽  
Matthew M. Coggon ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Biomass Burning ◽  
Ponderosa Pine ◽  
Fine Particles ◽  
Voc Emissions ◽  
Western Us ◽  
Volatile Organic ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Processes

Abstract. Biomass burning is a large source of volatile organic compounds (VOCs) and many other trace species to the atmosphere, which can act as precursors to the formation of secondary pollutants such as ozone and fine particles. Measurements collected with a proton-transfer-reaction time-of-flight mass spectrometer during the FIREX 2016 laboratory intensive were analyzed with Positive Matrix Factorization (PMF), in order to understand the instantaneous variability in VOC emissions from biomass burning, and to simplify the description of these types of emissions. Despite the complexity and variability of emissions, we found that a solution including just two emission profiles, which are mass spectral representations of the relative abundances of emitted VOCs, explained on average 85 % of the VOC emissions across various fuels representative of the western US (including various coniferous and chaparral fuels). In addition, the profiles were remarkably similar across almost all of the fuel types tested. For example, the correlation coefficient r of each profile between Ponderosa pine (coniferous tree) and Manzanita (chaparral) is higher than 0.9. We identified the two VOC profiles as resulting from high-temperature and low-temperature pyrolysis processes known to form VOCs in biomass burning. High-temperature and low-temperature pyrolysis processes do not correspond exactly to the commonly used flaming and smoldering categories as described by modified combustion efficiency (MCE). The average atmospheric properties (e.g. OH reactivity, volatility, etc.) of the high- and low-temperature profiles are significantly different. We also found that the two VOC profiles can describe previously reported VOC data for laboratory and field burns. This indicates that the high- and low-temperature pyrolysis profiles could be widely useful to model VOC emissions from many types of biomass burning in the western US, with a few exceptions such as burns of duff and rotten wood.

Applications of ESR to Carbonaceous Materials

1982 ◽  
Vol 36 (1) ◽  
pp. 52-57 ◽  
Author(s):  
L. S. Singer ◽  
I. C. Lewis
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Low Temperature ◽  
Electron Spin ◽  
Paramagnetic Species ◽  
Carbonaceous Materials ◽  
Conduction Electrons ◽  
Spin Resonance ◽  
Higher Temperature ◽  
Low Temperature Pyrolysis

The applications of electron spin resonance (ESR) to carbonaceous materials are reviewed. The stable paramagnetic species observed in the products of low-temperature pyrolysis are odd-alternate neutral free radicals, whereas the unpaired spins of higher temperature carbons and graphites are primarily conduction electrons. The variety of ESR properties and phenomena requires special attention to techniques of measurement and interpretations of results. The relevance to the carbonization process of the free radicals observed by ESR is also discussed.

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