the spontaneous combustion of coal

Spontaneous Combustion of Coal - Practical Maintenance

Spontaneous combustion of coal is the process of self heating resulting eventually in its ignition without the application of external heat. It is caused by the oxidation of coal. If the rate of dissipation of heat is slow with respect to the evolution of heat by oxidation there will

CDC - Mining Topic - Spontaneous Combustion - NIOSH

Apr 28, 2020 · Spontaneous combustion continues to pose a hazard for U.S. underground coal mines, particularly in western mines where the coal is generally of lower rank. The risk of an explosion ignited by a spontaneous combustion fire is also present in those

Assessing and managing spontaneous combustion of coal

Spontaneous combustion IEA Clean Coal Centre – Assessing and managing spontaneous combustion of coal 10 2 Spontaneous combustion All coals oxidise when newly exposed to air, especially during and after mining. This tends to be more of a problem in lower rank coals. Powder River Basin (PRB) coal was first used in 1974 and, although the new

Coal Spontaneous Combustion | Marine Surveyor Information

Preventing spontaneous combustion coal fires involves attention to many different factors. Among the most critical are the type, age, and composition of coal, how it is stored, and how it is used. Given the right kind of coal, oxygen, and a certain temperature and moisture content, coal will burn by itself.

SPONTANEOUS COMBUSTION OF COAL

Spontaneous combustion is a huge problem in the coal industry, where the resource is often stored or transported in large piles, so understanding and preventing res is important. There are many factors which may contribute to spontaneous combustion including: pile size, atmospheric moisture content, wind, coal type, internal heat and

The spontaneous combustion of coal and its by-products in ...

The spontaneous combustion of coal and its by-products in the Witbank and Sasolburg coalfields of South Africa J. Denis N. Ponea, Kim A.A. Heinb,⁎, Glenn B. Stracherc, Harold J. Annegarnd, Robert B. Finklemane, Donald R. Blakef, John K. McCormackg, Paul Schroederh a Energy and Geo-Environmental Engineering, The Pennsylvania State University, 228 Housler Building, University Park, PA 16802, USA

Spontaneous Coal Combustion Part 1: A Burning Mystery ...

Spontaneous combustion: Coal has a tendency to self-heat due to the auto-oxidation of its compounds, making spontaneous combustion the most common cause of uncontrolled burning. There are thousands of uncontrolled coal fires across the earth, some of

Spontaneous Combustion of Coal | SpringerLink

高达10%返现 · Introduction. This book aims to understand, analyze and mitigate the harmful impacts of spontaneous coal combustion in underground mines, a thermal phenomenon that triggers fires and explosions threatening the safety of mine workers globally. Based on experimental and theoretical research findings, the book emphasizes three essential questions ...

SPONTANEOUS COMBUSTION. - Fire Engineering

SPONTANEOUS COMBUSTION. ( Continued .) One of the most important sub-divisions of the subject is the spontaneous combustion of coal. The subject of special investigations by several British ...

Spontaneous combustion of coal (Technical Report) | OSTI.GOV

Spontaneous-combustion studies of US coals. Rept. of Investigations/1987. Technical Report Smith, A C ; Lazzara, C P. This report describes laboratory studies conducted by the Bureau of Mines on the spontaneous combustion of U.S. coals. Approximately 11 pct of U.S. underground-coal-mine fires are attributed to spontaneous combustion.

The spontaneous combustion of coal and its by-products in ...

The spontaneous combustion of coal and its by-products in the Witbank and Sasolburg coalfields of South Africa J. Denis N. Ponea, Kim A.A. Heinb,⁎, Glenn B. Stracherc, Harold J. Annegarnd, Robert B. Finklemane, Donald R. Blakef, John K. McCormackg, Paul Schroederh a Energy and Geo-Environmental Engineering, The Pennsylvania State University, 228 Housler Building, University Park, PA 16802, USA

EH-93-4 The Fire Below: Spontaneous Combustion in Coal ...

Preventing Spontaneous Combustion in Stored Coal Hugh quantities of coal are stored in bunkers, silos, hoppers and open air stockpiles. How susceptible such stocks of coal are to fire from spontaneous combustion depends on a number of factors, from how new the coal is to how it is piled. Recommendations: o Know your coal.

Spontaneous Coal Combustion Part 1: A Burning Mystery ...

Spontaneous combustion: Coal has a tendency to self-heat due to the auto-oxidation of its compounds, making spontaneous combustion the most common cause of uncontrolled burning. There are thousands of uncontrolled coal fires across the earth, some of

SPONTANEOUS COMBUSTION. - Fire Engineering

SPONTANEOUS COMBUSTION. (Continued.)One of the most important sub-divisions of the subject is the spontaneous combustion of coal. The subject of special investigations by several British ...

Inhibition of Spontaneous Combustion of Coal

In addition, spontaneous combustion continues to be a problem in the storage and transport of coal (2). Spontaneous combustion occurs when heat, which is produced by the low-temperature oxidation of the coal, is not adequately dissipated. This results in a net temperature increase in the coal mass that can lead to a fire.

Spontaneous Combustion of Coal | SpringerLink

Introduction. This book aims to understand, analyze and mitigate the harmful impacts of spontaneous coal combustion in underground mines, a thermal phenomenon that triggers fires and explosions threatening the safety of mine workers globally. Based on experimental and theoretical research findings, the book emphasizes three essential questions ...

Coal's Spontaneous Combustion Problem - Sightline Institute

Apr 11, 2012 · Spontaneous combustion of coal is a well-known phenomenon, especially with PRB coal. This high-moisture, highly volatile sub-bituminous coal will not only smolder and catch fire while in storage piles at power plants and coal terminals, but has been known to be delivered to a power plant with the rail car or barge partially on fire.

Study on calcium catalyzes coal spontaneous combustion ...

Coal spontaneous combustion is a dynamic non-linear development process. In the initial stage of oxidation, the heating rate of the coal sample is relatively small. After the temperature reaches a certain temperature (about 70 °C), ...

Evaluation of Spontaneous Combustion in Stockpile of Sub ...

spontaneous combustion.3) In many cases, the spontaneous combustion characteristics of coal are evaluated by measuring the change of temperature caused by the self-heating of a sample in an adiabatic system.4) It has been known that coal with strong oxidizing properties, such as a high O/C ratio (the ratio of oxygen to carbon contained in coal ...

Investigation of Spontaneous Combustion of Coal in ...

The risk of spontaneous combustion of coal is highly serious especially for underground coal mines. Coals react with oxygen immediately after producing in coal mines and they are subject to spontaneous combustion. This reaction is an exothermic reaction and coals give heat to the surrounding air.

Large-scale studies of spontaneous combustion of coal ...

Jan 01, 1991 · The U.S. Bureau of Mines constructed a large-scale facility to study the self-heating of a large coal mass under conditions that simulate a gob area of a mine. The insulated coal chamber can hold up to 13 short tons (st) of coal and is provided with a forced ventilation system and computer ...

Spontaneous Combustion of Coal - researchgate.net

Coal mining has many serious hazards, and the spontaneous combustion phenomenon is one of them. Many factors can influence the tendency for occurrence of this phenomenon. The maceral content is ...

Intelligent management of coal stockpiles using improved ...

Aug 01, 2017 · Spontaneous combustion of coal is an extremely complicated physical-chemical process which is often a whole inherent cycle including the incubation period, the self heating period and the combustion period. The tendency of spontaneous coal combustion is dependent on the release of heat and oxidation . During the incubation period, the oxidation ...

SPONTANEOUS COMBUSTION. - Fire Engineering

SPONTANEOUS COMBUSTION. (Continued.)One of the most important sub-divisions of the subject is the spontaneous combustion of coal. The subject of special investigations by several British ...

Spontaneous Combustion Management Guideline

spontaneous combustion - Oxidisation of coal is a normal process and this produces heat and certain gases. (All coal oxidizes). Spontaneous combustion is the process by which certain materials can ignite as a result of internal heat which arises spontaneously due to reactions liberating heat faster than it can be lost to the environment

SPONTANEOUS COMBUSTION OF COAL – A SHORT REVIEW –

Jan 23, 2019 · Coal mine fire, due to spontaneous combustion of coal, is a major health and safety hazard affecting the environment by releasing toxic fumes such as carbon monoxide and sulphur dioxide and cause subsidence of surface infrastructure such as roads, pipelines, electric lines, bridge supports, buildings and homes.

Spontaneous Combustion of Coal: Characteristics ...

Nov 28, 2019 · This book aims to understand, analyze and mitigate the harmful impacts of spontaneous coal combustion in underground mines, a thermal phenomenon that triggers fires and explosions threatening the safety of mine workers globally. Based on experimental and theoretical research findings, the

CO2 emission of coal spontaneous combustion and its ...

Coal spontaneous combustion is widely distributed all over the world. CO2 is the main greenhouse gas emitted by coal spontaneous combustion. In the present study characters of CO2 emitted by 10 typical Chinese coal spontaneous combustion and the influence of raw coal

"EVALUATION AND PREVENTION OF SPONTANEOUS COMBUSTION ...

Spontaneous combustion of coal has historically been a major problem for the coal industry, predominantly during storage and transportation. Various methods have been used in the laboratory for evaluating the propensity of different coal sources to self-heat. However, the heterogeneity of coal and the complexity of the system has resulted in inconsistencies and sometimes conflicting results as ...

SPONTANEOUS COMBUSTION OF COAL – A SOUTH

Coal has and will continue to be, at least for the foreseeable future, a relatively cheap and due to its relative abundance over other energy sources, a major source of energy for both South Africa and other countries the world over. Coals that are prone to spontaneous combustion, either while in-situ or following extraction are a liability

Spontaneous Combustion of Coal | QMIHSC 2019

Spontaneous combustion (sponcom) of coal remains a major safety issue for underground coal mining operations. Recent heating incidents in Australia further highlight the need of improving current knowledge and practices of sponcom management to ensure safety and productivity of coal mines extracting coal seams that are prone to spontaneous heating.

Study on calcium catalyzes coal spontaneous combustion ...

Coal spontaneous combustion is a dynamic non-linear development process. In the initial stage of oxidation, the heating rate of the coal sample is relatively small. After the temperature reaches a certain temperature (about 70 °C), ...

(PDF) Prevention of spontaneous combustion in coal ...

The spontaneous combustion of coal stockpiles is a serious economic and safety problem. This phenomenon is herein analysed using a TNO-model modified to predict the spontaneous

Coal Seams With a History of Spontaneous Combustion

spontaneous combustion as the majority of coal seams could suffer from spontaneous combustion depending upon the method of them being entered, worked or disturbed. Please be aware that some areas may have localised names for these seams. Coal Seams in England with a History of Spontaneous Combustion Seam Location: Coa l Seam: Cannock Bass

Spontaneous Combustion - Examples, Affected Materials and FAQs

This combustion may take place when combustible matter, such as coal or hay, is stored in bulk. It begins with a slow oxidation process (as atmospheric oxidation or bacterial fermentation) under conditions not permitting ready dissipation of heat. This is the simple spontaneous combustion meaning or the spontaneous combustion definition.

Spontaneous Combustion of Coal - Characteristics ...

This book explains how to understand, analyze and mitigate spontaneous coal combustion, offers preventive measures to mitigate the hazards of spontaneous coal combustion, and applies experimental techniques to investigate the chemical self-heating properties of coal.

How to Prevent Spontaneous Combustion in Coal Piles | Fire ...

Spontaneous Combustion in Coal (Continued from page 499) There are many more factors of minor importance. One of the troubles has been that undue attention has often been given to the minor ...