early detection of spontaneous combustion of coal in

  • Development of modified gas indices for early detection of

    early detection of spontaneous heating in coal pillars by D.C. Panigrahi and R.M. Bhattacherjee Synopsis Extensive field studies have been carried out to investigate the pillar fire problems in one coal mine in India. A Thermal IR gun and a Thermovision camera have been employed for thermal scanning to assess the state of heating in selected

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  • Spontaneous Combustion of Coal QMIHSC 2019

    This presentation will provide some the fundamental theory and practices in the early detection prevention and control of spontaneous combustion of coal. Case studies based on Chinese and Australian coal mines will be presented to demonstrate a range of techniques including radon detection jel and fly ash injection materials that can be

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  • EARLY DETECTION OF SPONTANEOUS COMBUSTION

    of the spontaneous combustion of sulfide ores such that the preferred evaluation index can be obtained to detect the onset of the spontaneous combustion of sulfide ore stockpiles at an early stage. Three largescale sulfide orestockpiles were piled in a stope to obtain the preferred index and achieve the early detection of spontaneous combustion.

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  • Spontaneous Coal Combustion Part 1 A Burning Mystery

    India has the largest concentration of coal fires and it is estimated that 80 of those fires started due to spontaneous combustion. Indian coal fires were first documented in coal fields located in Raniganj back in 1865. In addition mines in Jharia Jharkhand are famous for their rich coal resources but records show nearly 70 fires have been burning for over 100 years dating back to 1916.

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  • World CoalConscious Coal Milling The Engineer The

    Derek Stuart Global Product ManagerPower looks at why early detection of potential spontaneous heating and combustion locations in coal milling is essential to plant safety. All coals oxidise during storage but sub-bituminous coals (such as those from the Powder River Basin) due to their friability and porosity are especially prone to spontaneous combustion.

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  • Early detection of spontaneous combustion of coal in

    Early detection of spontaneous combustion of coal in underground coal mines with development of an ethylene enriching system Jun Xie 1 Sheng Xue 1 Weimin Cheng 2 Gang Wang 1 CSIRO Earth Science and Resource Engineering PO Box 883 Kenmore QLD Australia 4069 Tel 61 7 33274119 Fax 61 7 33274666 Email Jun.Xie csiro

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  • Thermal drone survey|Spontaneous combustion from

    Mar 17 2020 · Spontaneous combustion of coal and resulting coal fires causes a huge waste of energy halting mine production and produces harmful gases that are life-threating to workers and local residents.

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  • Detecting moving fires on coal conveyors Power Engineering

    Detecting moving fires on coal conveyors. To comply with certain elements of the Clean Air Act Amendments of 1990 a number of utilities operating coal fired power plants have switched to low-rank

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  • Woodchip Stock Pile Spontaneous Combustion Early Detection

    Spontaneous combustion is also a consideration in Hay Straw Cotton Sugar Cane waste piles and compost piles. Early detection and prevention of spontaneous combustion is critical in order to prevent a serious incident occurring. Figure 1. Early Detection of a hot spot on a stockpile that can lead to spontaneous combustion

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  • EARLY DETECTION OF SPONTANEOUS COMBUSTION

    of the spontaneous combustion of sulfide ores such that the preferred evaluation index can be obtained to detect the onset of the spontaneous combustion of sulfide ore stockpiles at an early stage. Three largescale sulfide orestockpiles were piled in a stope to obtain the preferred index and achieve the early detection of spontaneous combustion.

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  • 1 Introduction

    The primary method used for the detection of spontaneous combustion in underground coal mines is the early detection of low levels of gaseous products of coal oxidation most often through the use of in-mine continuous gas analysers using a tube bundle gas sampling system although gas samples can also be obtained for laboratory analysis by gas

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  • Estimating the Spontaneous Combustion Potential of Coals

    Early detection system for coal spontaneous combustion by laser dual-species sensor of CO and CH4. Optics Laser Technology 2020 121 105832. DOI 10.1016/j.optlastec.2019.105832. Karolina Wojtacha-Rychter Adam Smoliński.

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  • Coal seam spontaneous combustion mutation and precise

    affecting coal spontaneous combustion concentration of air oxygen concentration working face angle length of working face working face impelling speed the buried depth of coal seam mining methods etc. (1 ≤ i ≤n) Coal spontaneous combustion proceed under the combined action of influencing factors set U and V.

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  • Analysis of Index Gases of Coal Spontaneous Combustion

    Analysis of the index gases of coal for the prevention of spontaneous combustion is of great importance for the enhancement of coal mine safety. In this work Fourier Transform Infrared Spectrometer (FTIRS) is presented to be used to analyze the index gases of coal in real time to monitor spontaneous combustion conditions. Both the instrument parameters and the analysis method are

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  • The stage analysis and countermeasures of coal spontaneous

    During the early stage of the spontaneous combustion of coal external moisture begins to evaporate (at approximately 50°C) with a catalytic action 21–26 because moisture is involved in the formation of free radicals and plays an important role in promoting the formation of peroxide complexes . Water evaporation in coal can also lead to

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  • Early Detection of Spontaneous Combustion in Pellet Mills

    Jul 26 2019 · Fortunately there are techniques to detect the early stages of spontaneous heating and combustion allowing operators the chance to prevent the problem and avoid costly damages. Gas Detection Carbon monoxide (CO) monitoring is the most effective method of detecting the presence of spontaneous heating or combustion in an enclosed space such as

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  • Coal Stock Pile Spontaneous Combustion Early Detection

    Spontaneous combustion is a common occurrence when storing coal for extended periods of time. This may also be problematic when stockpiling waste/spoil materials that contain large quantities of coal. Early detection and prevention of spontaneous combustion is critical in order to prevent serious incidents occurring.

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  • Study on the gelation of foamed gel for preventing the

    1. Introduction Spontaneous combustion of coal in goaf is one of the main natural disasters in coal mine production 1 2 . In recent years in China technology of fully mechanized sublevel caving mining is extensively used besides gas extraction technique has been widely promoted in the gas treatment.

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  • Coal Stock Pile Spontaneous Combustion Early Detection

    Spontaneous combustion is a common occurrence when storing coal for extended periods of time. This may also be problematic when stockpiling waste/spoil materials that contain large quantities of coal. Early detection and prevention of spontaneous combustion is critical in order to prevent serious incidents occurring.

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  • Spontaneous Combustion A History of Coal Pile Maintenance

    Apr 29 2016 · Maintaining diligent upkeep through regular cleanings also greatly reduces the risk of spontaneous combustion as does installing infrared sensors and linear heat detection systems to help catch a fire early on. The accumulation of coal dust can similarly lead to combustion making sound dust control a crucial component of fire prevention in mines.

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  • Spontaneous combustion of coal and its early detection in

    SPONTANEOUS COMBUSTION OF COAL AND ITS EARLY DETECTION IN OKR MINES SAMOVZNÍCENÍ UHLÍ A JEHO VČASNÁ INDIKACE V DOLECH OKR Pavla GUŘANOVÁ Ing. Institute of Mining Engineering and Safety Faculty of Mining and Geology VŠB-Technical University of Ostrava 17. listopadu 15 Ostrava-Poruba Czech Republic tel. 420 596 995 475

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  • Overview of research and use of indicator gases of coal

    Key words coal spontaneous combustion indicator gas. 1 INTRODUCTION The findings related to the application of indicator gases for early detection of coal spontaneous combustion globally come from the first half of the 20th century. It was primarily Graham 1 2 whose

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  • Derek Stuart AMETEK Land USA illustrates early

    illustrates early detection techniques of spontaneous combustion in coal storage and transportation and highlights their importance for plant safety. B etween the time a piece of coal is dug out of the ground and is burned in a power plant boiler it has been through many stages of transportation and storage. One of the

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  • Spontaneous Coal Combustion Part 2 Chemical Inhibitors

    Thus early detection and prevention of spontaneous coal combustion is of great value to industry. What is being done to find a solution to this burning problem The industrial revolution was responsible for the coal industry boom in the early 1900s as society was introduced to electricity new industrial technologies and a rapid increase in

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  • Experimental study on CO and CO2 emissions from

    This paper attempts to provide experimental data to improve the early detection of spontaneous heating in underground coal mines. In this study laboratory-scale experiments were conducted to investigate the effect of initial temperature O 2 concentration and coal properties on the CO and CO 2 emissions during the spontaneous heating of three

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  • Early Fire Detection FLIR Automation FLIR Systems

    Storage of some material invites the risk of spontaneous combustion. As always prevention is better than a cure. A thermal imaging camera can help to ensure safety and detect spontaneous combustion. It provides continuous remote monitoring of temperatures in piles of coal

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  • Derek Stuart AMETEK Land USA illustrates early

    illustrates early detection techniques of spontaneous combustion in coal storage and transportation and highlights their importance for plant safety. B etween the time a piece of coal is dug out of the ground and is burned in a power plant boiler it has been through many stages of transportation and storage. One of the

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  • Early Fire Detection FLIR Automation FLIR Systems

    Storage of some material invites the risk of spontaneous combustion. As always prevention is better than a cure. A thermal imaging camera can help to ensure safety and detect spontaneous combustion. It provides continuous remote monitoring of temperatures in piles of coal

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  • Early Detection of Spontaneous Combustion in Pellet Mills

    Jul 26 2019 · Fortunately there are techniques to detect the early stages of spontaneous heating and combustion allowing operators the chance to prevent the problem and avoid costly damages. Gas Detection Carbon monoxide (CO) monitoring is the most effective method of detecting the presence of spontaneous heating or combustion in an enclosed space such as

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  • Early detection of spontaneous combustion of coal in

    Spontaneous combustion of coal (sponcom) is a major hazard in underground coal mining operations. If not detected early and managed properly it can seriously affect mine safety and productivity. Gaseous products of sponcom such as carbon monoxide ethylene and hydrogen are commonly used in coal mines as indicators to reflect the state of the

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  • Early detection of spontaneous combustion of coal in

    Spontaneous combustion of coal (sponcom) is a major hazard in underground coal mining operations. If not detected early and managed properly it can seriously affect mine safety and productivity.

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  • OVERVIEW OF RESEARCH AND USE OF INDICATOR GASES OF COAL

    CiteSeerXDocument Details (Isaac Councill Lee Giles Pradeep Teregowda) The beginnings of research and use of results in the area of indicator gas application for early detection of spontaneous combustion of coal in China comes from the sixties of the last century. The significant development occurred in the nineties when the program "Characteristics of the adsorption of coal oxygen

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  • Assessing and managing spontaneous combustion of coal

    Spontaneous combustion IEA Clean Coal CentreAssessing 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

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  • Bleederless Ventilation Systems as a Spontaneous

    a spontaneous combustion control measure in U.S. coal mines. The impact of bleederless ventilation practices on other mine design parameters such as ground con- trol methane control ventilation and monitoring is considered. In the United States between 1978 and 1988 approxi-

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  • Fundamental Studies on Early Detection of Spontaneous

    1) Spontaneous combustion of coal can be detected earlier by this detection system than by conventional CO detection system. 2) The most sensitive sensors for spontaneous combustion of coal were 112AJ and 453AA. 3) There is no difference in the results for different kinds of coal.

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