HOME
Full Articles List
Search by Author
Title: RESEARCH ON THE CHARACTERIZATION OF DANGEROUS SUBSTANCES FROM A FLAMEWORK POINT BY DETERMINING THE SELF-IGNITION TEMPERATURE OF THE DUST ACCUMULATIONS
BibTex 
Open this article in the author's DB |
|
RESEARCH ON THE CHARACTERIZATION OF DANGEROUS SUBSTANCES FROM A FLAMEWORK POINT BY DETERMINING THE SELF-IGNITION TEMPERATURE OF THE DUST ACCUMULATIONS
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
1314-2704
|
|
|
|
||
|
|
English
|
|
|
|
20
|
|
|
|
1.2
|
|
|
|
|
|
|
|
||
|
|
Spontaneous combustion is a phenomenon that results from the heating of combustible organic powders by slow oxidation and which occurs through the air passage (created by an air depression) through the mass of dust. The oxidation phenomenon of combustible powders represents their reaction with atmospheric oxygen resulting in products of carbon dioxide, carbon oxide, water and other gases whose content depends on the temperature at which the oxidation takes place. During oxidation, the oxidation rate is a function of temperature and can increase twice by heating the coal with 10°C. The speed of temperature rise depends on the speed of heat dissipation. As the temperature increases, the rate of oxidation increases, which produces more heat and the process accelerates. The self-ignition of combustible dusts depends on their chemical composition, the properties of component substances, on the particle size and geometry of the material mass and, last but not least, on the temperature of the environment. Self-ignition is a complex process that takes place in three successive or simultaneous stages of development. These influence each other and are: self-heating, evaporation of humidity and self-ignition. The reason behind self-heating (or possibly self-ignition) is that the molecules on the surface of combustible dust particles are subjected to exothermic reactions with oxygen in the air transported in the free volume between particles, even at normal temperatures. Any amount of heat released will then cause an increase in temperature in the reactive-air dust system, thus accelerating the reaction of other dust molecules with oxygen.The purpose of this work is to describe / present the self-ignition behaviour of combustible dusts by volume by means of drying tests under constant temperature conditions.
|
|
|
|
conference
|
|
|
|
||
|
|
||
|
|
20th International Multidisciplinary Scientific GeoConference SGEM 2020
|
|
|
|
20th International Multidisciplinary Scientific GeoConference SGEM 2020, 18 - 24 August, 2020
|
|
|
|
Proceedings Paper
|
|
|
|
STEF92 Technology
|
|
|
|
International Multidisciplinary Scientific GeoConference-SGEM
|
|
|
|
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; C
|
|
|
|
761-768
|
|
|
|
18 - 24 August, 2020
|
|
|
|
website
|
|
|
|
cdrom
|
|
|
|
6954
|
|
|
|
spontaneous combustion; combustible dust; self-ignition; flammability
|
|
Download PDF