An experimental study of combustion and emissions in a spark-ignition engine fueled with coal-bed gas

Cheng-ji, Zuo; Tan, Jianwei; Xu, Hongming

doi:10.1016/j.energy.2007.07.001

Cited by 11 publications

(5 citation statements)

References 10 publications

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“…The first stage is downward, the second stage is relatively stable, the third stage is upward rapidly and the fourth stage is a fluctuant increasing process. Before the 4303 (1) working face advanced to the drilling location (Night shift, February 5), the stress values of 1# and 2# borehole have been falling rapidly over time. Among which, the 1 # borehole stress reduced from the original 15.2Mpa to11.5Mpa and the 2 # hole stress reduced from the initial 14Mpa to 8.6Mpa.…”

Section: Fracture Filling and Reinforcingmentioning

confidence: 99%

“…Methane associated with coal seams are formed as a result of the coalification process. (1) The methane found in coal seams poses a hazard when encountered in sufficient quantities in the coal seam. Large amounts of methane are released in the mine working faces gradually as mining progresses.…”

mentioning

confidence: 99%

“…working face and 4303(1) working face are the first two working faces of the 4# mining area. Among them, the 4301 (1) working face has finished mining, closed and formed the goaf in January 2012.…”

mentioning

confidence: 99%

“…The preparation system of ISF in field applications3.3 The technical plan of site constructionThe generating device of ISF and the self-made stirrer were placed in the air return roadway of 4303(1) working face, 50 m away from the air return corner. The preparation system was accessed to the mine pressure air supply system and water supply system.…”

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confidence: 99%

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Application of Inorganic Solidified Foam to Control the Coexistence of Unusual Methane Emission and Spontaneous Combustion of Coal in the Luwa Coal Mine, China

Tian¹,

Lü²,

Shi³

et al. 2018

Preprint

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Unusual methane emission and spontaneous combustion of coal induced by the air leakage are both hazards during mining. The most common practice has been to improve mine safety is sealing the mining fractures. In this paper, the methane and geology, coal spontaneous combustion characteristics and the coexistence of methane emission and spontaneous combustion of coal were analyzed. The preparation system of inorganic solidified foam (ISF) in field applications is studied and the working principle of generating device consists of foam generator and mixer was expounded. The technical plan of site construction is that the foam fluids was injected to respectively seal the mining fractures behind hydraulic supports, the cavities of air return corner, and the fractures nearby the coal pillar. After the foam fluids injection, the two stress values in the coal pillar eventually maintained above 15.5Mpa and 13Mpa, respectively. It indicated that the ISF can enhance the bearing stress ability of the coal pillar by transforming the stress state from two dimensional to three dimensional. The methane concentration in the air return corner and air return roadway declined significantly to 0.63% and 0.25%. The differential pressure inside and outside of the 4301(1) goaf fluctuated between -100pa to 150pa and the concentration of CO and O2 declined to 9ppm and 6%. The CO concentration in the air return corner finally reached a stable level of 6ppm. What that all means, the foam fluids can seal the air leakage and inhibit spontaneous combustion of coal effectively.

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Section: Fracture Filling and Reinforcingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Application of Inorganic Solidified Foam to Control the Coexistence of Unusual Methane Emission and Spontaneous Combustion of Coal in the Luwa Coal Mine, China

Tian¹,

Lü²,

Shi³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…Other alternative fuels such as coal-bed gas require special strategies for ignition control as a result of varying gas composition [9], while the addition of hydrogen to natural gas used as a fuel in SI engines was found to greatly improve combustion stability during lean operation [10].…”

Section: Introductionmentioning

confidence: 99%

Fuel conversion efficiency of a port injection engine fueled with gasoline–isobutanol blends

Irimescu

2011

Energy

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Performances and emissions of a petroleum coke oil slurry engine

Xiang

Cai

et al. 2012

J. Cent. South Univ.

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An experimental study of combustion and emissions in a spark-ignition engine fueled with coal-bed gas

Cited by 11 publications

References 10 publications

Application of Inorganic Solidified Foam to Control the Coexistence of Unusual Methane Emission and Spontaneous Combustion of Coal in the Luwa Coal Mine, China

Application of Inorganic Solidified Foam to Control the Coexistence of Unusual Methane Emission and Spontaneous Combustion of Coal in the Luwa Coal Mine, China

Fuel conversion efficiency of a port injection engine fueled with gasoline–isobutanol blends

Performances and emissions of a petroleum coke oil slurry engine

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