Safety of hydrogen storage and transportation: An overview on …
The extensive usage of fossil fuels has caused significant environmental pollution, climate change and energy crises. The significant advantages of hydrogen, …
Role of moisture content in coal oxidation during the spontaneous combustion …
This paper investigates the role of moisture content in coal oxidation during spontaneous combustion latency. The influence of water on the self-heating process is complex. The TTR varies dynamically with the moisture content of the coal. When the moisture content of coal is 10.28 % and 3.05 %, both TTRs are the same.
Spontaneous Combustion
The self-combustion process was auto-catalytic and self-propagating in nature which resulted in instant high temperatures (higher than 1000 °C) that helped to form perovskite structure. TG curve ( Fig. 5) shows that the oxidation of the precursor went to completion as low as 370 °C, much lower than other methods.
Detection of Signal of Fire Source for Coal Spontaneous Combustion Applied with Acoustic Wave | Natural Resources …
Coal spontaneous combustion can cause a series of problems in terms of wasted resources, casualties, and environmental pollution. Accurate detection of the fire source in loose coal is the key to preventing coal spontaneous combustion. Acoustic temperature measurement has significant advantages of strong stability, high accuracy, …
Spontaneous combustion
Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by …
Improvement of technological schemes of mining of coal seams prone to spontaneous combustion …
Recommendations for improving the layout for the development and mining of coal seams that are prone to spontaneous combustion and dangerous in terms of rock bumps in the conditions of Alardiskaya ...
Evaluation of Spontaneous Combustion in Stockpile of Sub …
The simulation enables the evaluation of the temperature change in a coal stockpile without any large- scale temperature measurement. The simulation results show that the heat tends to be generated at the foot of each stockpile where the breathability is high. It has also. been confirmed that the stockpile of sub-bituminous coal.
Spontaneous Combustion
Spontaneous ignition is defined as [23 ]: "the chemical or biological process that generates sufficient heat to ignite the reacting material.". In such instances, the ignition occurs without the presence of an external ignition source: It is solely attributable to the self-heating process of the material.
Time-shift effect of spontaneous combustion characteristics and …
The physical and chemical properties of the air-dried residual coal after soaking in the goaf will change, resulting in an increase in its spontaneous combustion tendency. This study aimed to look into the features and mechanism of soaked-dried coal''s spontaneous combustion. Five samples of coal were dried to various degrees, and the …
Influence of mudstone on coal spontaneous combustion …
The heat accumulated by the LTO of coal is the power source of coal self-ignition 4. The essence of self-ignition of coal is a complex oxidation kinetic process in which coal and oxygen undergo ...
Research Status and Development Trend of Coal Spontaneous …
basic theory of coal spontaneous combustion, monitoring and early warning methods, and prevention and control technology, summarizes the development process of coal …
Evaluation of Spontaneous Combustion in Stockpile of Sub …
As a result, thermal power generation plants in Japan are using various types of coal. Above all, these plants are increasingly using coals such as sub-bituminous coal, which has a …
Spontaneous Combustion
Spontaneous combustion is the phenomenon in which a hydrocarbon (or a chemical substance) substance unexpectedly bursts into flame without apparent cause. In ordinary …
Comprehensive and Dynamic Cooling Technology of High-Temperature Working Face with Multiple Heat Sources in Coal Seam Prone to Spontaneous Combustion
Cooling Technology of High-Temperature Working Face with Multiple Heat Sources in Coal Seam Prone to Spontaneous ... and 3 − 1 coal are prone to spontaneous combustion. The overburden fracture ...
The Phenomenon of Spontaneous Combustion
Spontaneous combustion is a sometimes mysterious and often misunderstood or misdiagnosed combustion of flammable ... i.e., in contact with air and without an energy supply (ignition source); they ...
Improved Calculation Model for the Shortest Spontaneous …
Predicting the spontaneous combustion of coal can be used to infer the spontaneous combustion development process, allowing effective fire prevention measures to be …
Processes | Free Full-Text | Analysis of the Current Status and Hot Technologies of Coal Spontaneous Combustion …
Coal spontaneous combustion disasters are one of the most serious types of mine disasters in China at present, posing a huge threat to underground personal safety and coal production operations. In order to prevent and control coal spontaneous combustion hazards and construct an efficient early warning system, this paper presents …
Spontaneous combustion Definition & Meaning
The meaning of SPONTANEOUS COMBUSTION is self-ignition of combustible material through chemical action (such as oxidation) of its constituents —called also spontaneous ignition. Recent Examples on the Web There''s one more major category of spontaneous combustion: the drying oils. ...
Spontaneous combustion of lithium batteries and its preventive …
However, lithium battery, the main component of new energy vehicles, has become a power source and an energy storage power source for peak-frequency …
Auto-ignition Temperature: Understanding the Science behind Spontaneous Combustion
1 TO C hemstry Journal Vol : htts:urkhcoindehtoco Auto-ignition Temperature: Understanding the Science behind Spontaneous Combustion Guanyou Lin* Department of Materials Science and Engineering, University of Washington, USA guanyoulin@qq ...
Inventions | Free Full-Text | Sensing Spontaneous Combustion in Agricultural Storage …
The combustion of agricultural storage represents a big hazard to the safety and quality preservation of crops during lengthy storage times. Cotton storage is considered more prone to combustion for many reasons, i.e., heat by microbial growth, exothermic and endothermic reactions in storage areas, and extreme weather conditions …
A methane emission control strategy in the initial mining range at a spontaneous combustion-prone longwall face…
methane emission control strategy in the initial mining range at a spontaneous combustion-prone longwall ... it is aimed to provide a fundamental reference source for administrative and technical ...
Study on CO source identification and spontaneous combustion …
Coal spontaneous combustion is a common problem faced by many coal mines. Spontaneous combustion in goaf releases a large amount of harmful gases, polluting the environment while causing a large amount of wasted resources, and even endangering the lives of workers. Due to the collapse of the interior of the mining area, it …
Spontaneous combustion
Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions ), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition. [1] It is distinct from (but has similar practical …
Research progress on gravity heat pipe technology to prevent spontaneous combustion in coal storage …
During coal storage and transportation, spontaneous combustion occurs occasionally. Heat pipes, as new fire prevention technology, have been applied and explored in the prevention and control of spontaneous combustion in coal yards. This paper combines the mechanism of spontaneous combustion in coal yards and the …
(PDF) Spontaneous combustion of lithium batteries …
However, lithium battery, the main component of new energy vehicles, has become a power source and an energy storage power source for peak-frequency modulation due to its advantages of …
A method to identify coal spontaneous combustion-prone regions …
Coal spontaneous combustion (CSC) is one of the main sources of greenhouse gases (GHGs) emission. ... symbiotic disaster of highly gassy and spontaneous combustion-prone short-distance coal seams, ...
Oxidation to spontaneous combustion of pyrophoric iron …
Aiming at the positioning problem of spontaneous combustion of PISs, Liu and Hu (2013) and Shao et al. (Shao et al., 2013) used a finite element analysis method to simulate the temperature field of oxidation to …
Spontaneous Combustion
Fires started by spontaneous combustion are caused by the following mechanisms: (i) spontaneous heating, (ii) pyrophoricity, and (iii) hypergolic reactions. Spontaneous …
Spontaneous Combustion
5 · Spontaneous Combustion Examples. Let us look at some of the Spontaneous Combustion examples. Examples are in the centre of a pile or a haystack of oily rags. Oxidation gradually increases the temperature inside the mass to the point where a fire starts. Typically, the crops are dried before storage or during storage using forced air …
(PDF) Spontaneous combustion of lithium batteries …
However, lithium battery, the main component of new energy vehicles, has become a power source and an energy storage power source for peak-frequency modulation due to its advantages...
Investigation of the propensity of sulfide concentrates to spontaneous combustion in storage …
Pyrite plays a significant role in the spontaneous combustion of coal, especially when the pyrite content is between 5 and 7%, and it is more prone to spontaneous combustion. 12 Yang et al. 13 ...
Laboratory investigation of the spontaneous combustion characteristics and mechanisms …
Spontaneous combustion is a unique phenomenon whereby combustibles in the air cause heat to accumulate even in the absence of an external source of fire, and eventually burn due to self-heating. Theoretically, this is a spontaneous process caused by a heat imbalance [ [1], [2], [3] ].
