Comparing Pyrolysis Gases and Dusts Explosivities: A Clue to Understanding Hybrid Mixtures Explosions?

2011 ◽  
Vol 51 (22) ◽  
pp. 7656-7662 ◽  
Author(s):  
Olivier Dufaud ◽  
Manon Poupeau ◽  
Imad Khalili ◽  
Nicolas Cuervo ◽  
Mélina Christodoulou ◽  
...  
2020 ◽  
Vol 374 ◽  
pp. 330-347
Author(s):  
Paula Pico ◽  
Nicolás Ratkovich ◽  
Felipe Muñoz ◽  
Olivier Dufaud

2020 ◽  
Vol 372 ◽  
pp. 638-658 ◽  
Author(s):  
Paula Pico ◽  
Nicolás Ratkovich ◽  
Felipe Muñoz ◽  
Olivier Dufaud

Author(s):  
N. I. Chernova ◽  
S. V. Kiseleva ◽  
O. M. Larina ◽  
G. A. Sytchev

Algae biomass is considered as an alternative raw material for the production of biofuels. The search for new types of raw materials, including high-energy types of microalgae, remains relevant, since the share of motor fuels in the structure of the global fuel and energy balance remains consistently high (about 35%), and the price of oil is characterized by high volatility. The authors have considered the advantages of microalgae as sources of raw materials for fuel production. Biochemical and thermochemical conversion are proposed as technologies for their processing. This paper presents the results of the study of the pyrolysis of the biomass of clonal culture of blue-green microalgae / cyanobacteriumArthrospira platensis rsemsu 1/02-Pfrom the collection of the Research Laboratory of Renewable Energy Sources of the Lomonosov Moscow State University. An experiment to study the process of pyrolysis of microalgae biomass was carried out at the experimental facility of the Institute of High Temperatures RAS in pure nitrogen grade 6.0 to create an oxygen-free environment with a linear heating rate of 10 ºС / min from room temperature to 1000 ºС. The whole process of pyrolysis proceeded in the field of endothermy. The specific amounts of solid residue, pyrolysis liquid and gaseous products were experimentally determined. As a result of the pyrolysis of microalgae biomass weighing 15 g, the following products were obtained: 1) coal has the mass of the solid residue is 2.68 g, or 17.7% of the initial mass of the microalgae (while 9.3% of the initial mass of the microalgae remained in the reactor); 2) pyrolysis liquid – weight 3.3 g, or 21.9% of the initial weight; 3) non-condensable pyrolysis gases – weight 1.15 l. The specific volumetric gas yield (the amount of gas released from 1 kg of the starting material) was 0.076 Nm3/ kg. The analysis of the composition and specific volume yield of non-condensable pyrolysis gases formed in the process of pyrolysis, depending on temperature. It is shown that with increasing temperature, the proportion of highcalorie components of the gas mixture (hydrogen, methane and carbon monoxide) increases. The calorific value of the mixture of these gases has been estimated.


Crop Science ◽  
1977 ◽  
Vol 17 (4) ◽  
pp. 645-646 ◽  
Author(s):  
D. L. Thompson
Keyword(s):  

2021 ◽  
Vol 11 (4) ◽  
pp. 1669 ◽  
Author(s):  
Rolf K. Eckhoff ◽  
Gang Li

This paper first addresses the question: what is a dust explosion? Afterwards, some specific issues are briefly reviewed: materials that can give dust explosions, factors influencing ignitability and explosibility of dust clouds, the combustion of dust clouds in air, ignition sources that can initiate dust explosions, primary and secondary dust explosions, dust flash fires, explosions of “hybrid mixtures”, and detonation of dust clouds. Subsequently, measures for dust explosion prevention and mitigation are reviewed. The next section presents the case history of an industrial dust explosion catastrophe in China in 2014. In the final section, a brief review is given of some current research issues that are related to the prevention and mitigation of dust explosions. There is a constant need for further research and development in all the areas elucidated in the paper.


2021 ◽  
pp. 103424
Author(s):  
Sahand Rasoulipour ◽  
Charles Fleischmann ◽  
Luke Merciec ◽  
Nicole Adams

2006 ◽  
Vol 42 (4) ◽  
pp. 560-562
Author(s):  
V. A. Borysenko ◽  
O. H. Arkhypov ◽  
H. V. Lipko
Keyword(s):  

Author(s):  
Xiaobin Chen ◽  
Yuting Tang ◽  
Chuncheng Ke ◽  
Chaoyue Zhang ◽  
Sichun Ding ◽  
...  
Keyword(s):  

2020 ◽  
Vol 21 (2) ◽  
pp. 119-128
Author(s):  
Asma Rafa ◽  
◽  
Mohamed Berrichi ◽  
Ahmed Haddad ◽  
◽  
...  

In this study, on the aspects of the resilience of woody species to the passage of fire, we wanted to test the alveolar specificity represented by the size of the pores of the secondary xylem of the root system in Quercus coccifera L., Pore size assessment is based on measuring 100 pores in cross sections, from the roots of 10 shrubs. The aim of this study is to explain how the roots can maintain their vitality after passing a fire and thus guarantee regeneration. In addition to the vigor of the root system of this species, the release of pyrolysis gases and the propagation of heat by conduction are provided by the porosity of the material. The results show that the pores are qualified as “fine” in the initial wood with an average diameter of 83.35 µm. In final wood, they are "very thin" with 42.30 µm in diameter. The absence of oxygen and the less porous structure delay the combustion cycle of the root system, the roots distant from the surface are thus protected from proliferation by heat conduction and thus guarantee regeneration.


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