04/00312 Study on co-firing of biomass with coal. Part (1). Low-temperature pyrolysis of biomass

2004 ◽  
Vol 45 (1) ◽  
pp. 37
Keyword(s):  
Low Temperature ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Of Biomass

scholarly journals Oxygen influence on the process of low-temperature pyrolysis of biomass

2019 ◽  
Vol 1147 ◽  
pp. 012091 ◽  
Author(s):  
A L Shevchenko ◽  
A E Petrov ◽  
G A Sytchev ◽  
V M Zaichenko
Keyword(s):  
Low Temperature ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Of Biomass

Comparison of the Efficiency of the Reactors for Low-Temperature Pyrolysis of Biomass

2020 ◽  
Vol 67 (5) ◽  
pp. 296-303
Author(s):  
L. B. Direktor ◽  
V. M. Zaichenko ◽  
R. L. Is’emin ◽  
A. A. Chernyavskii ◽  
A. L. Shevchenko
Keyword(s):  
Low Temperature ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Of Biomass

Development and Testing of a Reactor Model for Low-Temperature Pyrolysis of Biomass

2013 ◽  
Vol 49 (7-8) ◽  
pp. 440-442
Author(s):  
R. L. Is’emin ◽  
S. N. Kuz’min ◽  
A. V. Mikhalev ◽  
V. V. Konyakhin ◽  
O. Yu. Milovanov
Keyword(s):  
Low Temperature ◽  
Reactor Model ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Of Biomass

scholarly journals A Comparison of the Efficiency of Catalysts Based on Ni, Ni-Co and Ni-Mo in Pressure Pyrolysis of Biomass Leading to Hythane

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1480
Author(s):  
Pavel Straka ◽  
Olga Bičáková ◽  
Tomáš Hlinčík
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Thermal Conversion ◽  
Hydrogen Atmosphere ◽  
Different Types ◽  
Secondary Reactions ◽  
Low Temperature Pyrolysis ◽  
Pyrolysis Of Biomass ◽  
Al2o3 Catalyst

A thermal conversion of biomass to hythane using catalysts was studied. Low-temperature pyrolysis of two different types of biomass was performed in a pressure sealed reactor, and the resulting gas with high contents of CO2 and CO was methanized in a hydrogen atmosphere at a pressure of 30 bar. As catalysts, Ni/Al2O3, NiCo/Al2O3 and NiMo/Al2O3 were used and their catalytic activity was evaluated. The NiCo/Al2O3 catalyst showed the highest catalytic activity, Ni/Al2O3 had a lower but comparable one, and NiMo/Al2O3 showed the lowest activity. The resulting hythane contained 70 vol.% CH4 and 10 vol.% H2 (with NiCo/Al2O3 catalyst, HHV 29.20 MJ/m3, LHV 26.32 MJ/m3), or 57 vol.% CH4 and 23 vol% H2 (with Ni/Al2O3, HHV 25.92 MJ/m3, LHV 23.21 MJ/m3) or 47 vol.% CH4 and 27 vol.% H2 (with NiMo/Al2O3, HHV 23.23 MJ/m3, LHV 20.76 MJ/m3). It has been found that secondary reactions of volatile biomass products are of great importance for successful pressure 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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