Primary gas toxicities and smoke particle characteristics during combustion of mine brattices

by Maria I. De Rosa

Publisher: Dept. of the Interior in Washington, DC

Written in English
Published: Pages: 11 Downloads: 591
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  • Brattices (Mining) -- Fire-testing,
  • Combustion gases -- Analysis,
  • Smoke -- Analysis
  • Edition Notes

    Statementby Maria I. De Rosa and Charles D. Litton.
    SeriesReport of investigations (United States. Bureau of Mines) -- .no.9284.
    ContributionsLitton, C. D.
    LC ClassificationsUSBMRI#9284 1989
    The Physical Object
    Pagination11 p
    Number of Pages11
    ID Numbers
    Open LibraryOL22071963M
    LC Control Number89-600041

  In , several surface coal mines experienced the release of toxic gases associated with spontaneous combustion. These releases exposed some mine workers to harmful levels of gases, including carbon monoxide (CO) and sulphur dioxide (SO 2) which are the main gases associated with spontaneous combustion in Queensland surface coal mines. Coal Operators’ Conference The AusIMM Illawarra Branch 14 - 15 February THE ROLE OF GAS MONITORING IN THE PREVENTION AND TREATMENT OF MINE FIRES Darren Brady1 ABSTRACT: Queensland’s underground coal industry, as a whole, has arguably the best gas monitoring systems in the world. Each mine utilises real time, tube bundle and onsite ultra fast gas . Coal Operators’ Conference The University of Wollongong 12 – 14 February DEVELOPMENTS IN THE MANAGEMENT OF SPONTANEOUS COMBUSTION IN AUSTRALIAN UNDERGROUND COAL MINES David Cliff1, Darren Brady2 and Martin Watkinson3 ABSTRACT: In the book Spontaneous Combustion in Australian Underground Coal Mines was first released . The mechanism of fire induced by methane explosions was studied to know about the great danger of induced fire. Firstly, from the point of heat ignition to study it, then the especial heat environment after explosions was studied. Lastly, from the point of characteristics of gas separated from fuel to judge whether fire to be induced. The part of heat ignition was based on conservation of : Yu Long Duan.

An Elementary Treatise on the Combustion of Coal and the Prevention of Smoke, Chemically and Practically Considered with an Appendix, Containing the Report on the Newcastle Steam Coal by C. Wye Williams Book from the collections of National Central Library of . Solve the oxygen and air requirements for the combustion of solid, liquid and gaseous fuels. Determine the products of combustion. Determine the air/fuel ratio from the products of combustion. Solve problems involving energy released by combustion. Describe basic instruments used in flue gas Size: KB. complete combustion being provided. The syngas produced can be used as a fuel, usually for boilers or gas turbines to generate electricity, or can be used to make a synthetic natural gas, hydrogen gas or other chemical products. The gasification technology is applicable to any type of carbon-based feedstock, such as coal, heavy refinery residues.   Fire Damp Made up mainly by methane, an inflammable gas which when mixed with the right proportion of oxygen, can be explosive, fire damp is also quite dangerous in a coal mine. Methane, which makes up between 90% and % of the inflammable part of fire damp (generally around 70% to 80% of the "air," when the nonflammable gases are accounted for).

combustion are exhausted to the surface, sometimes explosively, in huge clouds of gases and ash. • Steam engines using heat generated from burning natural carbon fuels such as wood, gas, oil or coal. • Internal combustion engines burning natural gas or petroleum Size: KB. The aim of this project was to improve the ability to detect spontaneous combustion and to be able to monitor the changes in intensity of any spontaneous combustion event. Large scale testing of 5 coal samples (16 tonne) lead to successful self heatings on two occasions. Some of . -The worker during a winter’s night sat down within the dump to warm-up-He was found dead the next morning We learned: “No Entry” notice-board at every coal waste dump for unauthorised person. Never enter the coal waste dumps without gas monitor. Ensure that no File Size: 1MB. temperature until combustion takes place leading to the emission of toxic and explosive gases together with propagation to open fire. The self-heating will then become a potential ignition source for an explosion if exposed to a flammable mixture of gas. Spontaneous File Size: 6MB.

Primary gas toxicities and smoke particle characteristics during combustion of mine brattices by Maria I. De Rosa Download PDF EPUB FB2

Get this from a library. Primary gas toxicities and smoke particle characteristics during a two-stage combustion of mine brattices: development of a test parameter. [Maria I De Rosa; C D Litton; United States. Bureau of Mines.]. The U.S.

Bureau of Mines performed experiments to determine if primary gas toxicities that evolve during the early (approx. Deg c) and later (> or = deg c) combustion stages of polyvinyl chloride and chlorinated brattices could be predicted by a smoke particle characteristic, which could be used as a simple and inexpensive test parameter.

Get this from a library. Primary gas toxicities and smoke particle characteristics during a two-stage combustion of mine brattices: development of a test parameter.


De Rosa 1 and Charles D. Litton2 ABSTRACT The U.S. Bureau of Mines performed experiments to determine if the primary gas toxicities evolved. The U.S. Bureau of Mines performed experiments to determine if the primary gas toxicities evolved during the early (approx.

Deg c) and later (> or = to deg c) combustion stages of mine conveyor belts could be predicted by a smoke particle characteristic. "The U.S. Bureau of Mines performed experiments to determine if the primary gas toxicities evolved during the early (approx.

Deg c) and later (> or = to deg c) combustion stages of mine conveyor belts could be predicted by a smoke particle ch Author: Maria I. De Rosa, C. Litton. The Combustion of Coal, and the Prevention of Smoke: Chemically and Practically Considered, Part 1 Paperback – Aug by Charles Wye Williams (Author) See all 5 formats and editions Hide other formats and editions.

Price New from Used from Author: Charles Wye Williams. There was also a difference in the particle number concentration (from nm to nm); the coal combustion caused the highest total particle number concentrations ( 10 8 cm − 3) and the “c+rp” the lowest ( 10 8 cm − 3), whereas the flue gas particle number concentrations for the coal–industrial pellet mixture were Cited by: enhanced the tendency of coal particles to exhibit a twomode combustion behavior.

- Particle luminosity, fragmentation and deduced temperatures were higher in O. 2 /N. than in O. 2 /CO. atmospheres, and corresponding burnout times were shorter, at the same O. mole fractions.

Particle luminosity and temperatures increased with Author: Khatami Firoozabadi, Seyed Reza. The first ever study on oxy-fluidized bed combustion of brown coal char particle.

• The particle temperature found to increase in presence of H 2 O in feed gas. A single particle combustion model was developed using H 2 O in combustion atmosphere. The carbon consumption rate increased in presence of steam in by: The characteristics of the combustion temperature, flow velocity, CO distribution and NOx emissions of a 10 MW gas burner at different primary to secondary air ratios are numerically studied using.

This work presents first-of-its-kind high-speed planar laser-induced fluorescence measurements of the hydroxyl radical in the boundary layer of single coal particles.

Experiments were performed in a laminar flow reactor providing an oxygen-enriched exhaust gas environment at elevated temperatures. Single coal particles in a sieve fraction of 90– µm and a significant amount of Cited by: Fine Particle and Mercury Formation and Control during Coal Combustion Xiaofei Wang Washington University in St.

Louis Follow this and additional works at: This Dissertation is brought to you for free and open access by Washington University Open Scholarship. It has been accepted for inclusion in AllAuthor: Xiaofei Wang.

Spontaneous Combustion Coal & Mine 1st Edition. by S.C. Banerjee (Author) ISBN ISBN Why is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book.

Author: S.C. Banerjee. The net flue gas after condensing all the water vapour can typically contain about 80–95% (db) CO2for any coal fired oxyfuel boiler depending on coal type, excess oxygen, air in-leakage and flue gas processing employed.

Tan and others () have reported that CO2concentration in the flue gas Oxyfuel combustion of pulverised coal 5. Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuel, fuel oil, or ing to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling often disperses downwind in a pattern called an exhaust plume.

The combustion of a cluster of pulverized coal particle in a combustor is guided by the combustion characteristics of a single coal particle in a surrounding of hot gas [1][2][3] [4]. CO: colorless, odorless gas that forms during incomplete combustion of matter-vehicle exhaust-urban areas-dangerous indoor air pollutant (with heating systems and cooking) CO2: colorless, odorless gas forms during complete combustion of matter-fossil fuels and biomass.

--comes from cars and fossil fuel combustion, forest fires and lightning *motor vehicles primary source of NOx--helps to form tropospheric ozone and photochemical smog--NO colorless, odorless gas--NO2 Pungent, reddish-brown gas.

This chapter treats direct combustion flames, while the next chapter emphasizes practical flames in coal gasification. In principle there is little difference in these two flame types. Direct combustion flames are those where the reactions of coal take place to near completion with CO 2 and H 2 O being among the major product species and where Author: L.

Douglas Smoot, Philip J. Smith. Spontaneous combustion is a potential source of greenhouse gas emissions from open-cut coal mines. Emissions, however, are very variable across the industry; many mines have no instances of spontaneous combustion and therefore no emissions from this source.

Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas focuses on a niche technology, combustion of coal in an oxygen rich environment, which is one approach to obtaining ‘clean coal,’ by making it easier to capture carbon that is released in the combustion process. Toporov’s book breaks ground on covering the key fundamentals of oxycoal technologies, which have not.

Assessment of PAH emissions as a function of coal combustion variables: A. M, Mastral et al, Table 5 Amount of each PAH studied (ngkg-‘) and total amounts emitted from the low-rank coal combustion in the FBR Temperature (“C) Fluorene Primary causes of spontaneous combustion In underground mines, the primary cause of spontaneous combustion is crushed coal (either left in goaf areas or in highly stressed pillars) that is in contact with a sluggish airflow.

Good 1 Spontaneous Combustion Testing, Querol Aragón, E.; García Torrent, J.; Cámara Rascón, A. Dep. Ing. Química yFile Size: 4MB. long-term behavior of combustion residues and their potential impacts in the mine setting.

Research should be conducted in the following areas: The environmental behavior of residues at mine sites under different climatic and geologic set-tings to determine placement techniques most protective of human and ecological Size: KB.

Mine has a separate control to engage the secondary combustion. In the "normal" mode it looks like combustion by-products go out the top near the front, through a chamber, and out the chimney connector. When you throw the lever, the top is close off, and the combustion by-products go out the bottom of the stove, up the back, and then out the top.

the emission characteristics of these devices. In this paper, we report on controlled combustion experi-ments carried out to investigate systematically influ-ences of fire-ignition methods and stove ventilation rates on gaseous and condensed matter (smoke) emissions.

Oxygen Concentration Detection in Goaf. The tube bundle gas monitoring system, shown in Figure 4, has been used to monitor the coal spontaneous combustion process in the goaf, can detect the early stage of coal spontaneous combustion based on monitoring oxidation products, such as CO, and then make an alarm to the mine engineers [14–16].Cited by: 3.

The primary objective of the part of the study described in this paper is to use mine fire simulation software to gain better understanding of how spontaneous combustion initiated fires can interact with the complex ventilation behaviour underground during a substantial fire.

It focuses on. Abstract. This study is focused on the emission of fixed bed combustor batch operated. Real-time analyser ELPI (electrical low-pressure impactor) system was used to size-segregated particulate matter emission ranging from 40 nm to 10 results show that total number concentration were, and, while total mass of particles were, and for combustion of lignite, rice husk and Cited by: 1.

Mine Gas synonyms, Mine Gas pronunciation, Mine Gas translation, English dictionary definition of Mine Gas. n. 1. A combustible gas, chiefly methane, often occurring in mines in .Residues from the combustion of coal for energy production consist mainly of slag, ashes and flue gas desulphurisation gypsum.

Residue generation has increased in the EU by about 12% in the periodand now amounts to % of total waste generation.The Tiptop underground coal-mine fire in the Skyline coalbed of the Middle Pennsylvanian Breathitt Formation was investigated in rural northern Breathitt County, Kentucky, in May and Januaryfor the purpose of determining the concentrations of carbon dioxide (CO2), carbon monoxide (CO), and mercury (Hg) in the vent and for measuring gas-vent by: