Experimental study on the influence of temperature cycle on low-rank coal permeability
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DOI: 10.1007/s11431-019-1460-6
Abstract: The formation temperature is a key factor affecting coalbed methane (CBM) migration in reservoirs. Both the prediction of CBM production and prevention of mine gas disasters require the understanding on the controlling mechanism of temperature… read more here.
Keywords: temperature; coal permeability; permeability; rank coal ... See more keywords
Three-dimensional digitalization modeling characterization of pores in high-rank coal in the southern Qinshui basin
Sign Up to like & getrecommendations! Published in 2018 at "Geosciences Journal"
DOI: 10.1007/s12303-018-0014-3
Abstract: Pore connectivity is an important property of coal. To explore the connectivity of pore-fractures in terms of macropores and mesopores in high-rank coal, two coal samples collected from the coal seam #3 in the southern… read more here.
Keywords: high rank; connectivity; rank coal; coal ... See more keywords
Thermal characteristics and surface morphology of char during co-pyrolysis of low-rank coal blended with microalgal biomass: Effects of Nannochloropsis and Chlorella.
Sign Up to like & getrecommendations! Published in 2018 at "Bioresource technology"
DOI: 10.1016/j.biortech.2017.09.196
Abstract: In this work, the influence of Nannochloropsis and Chlorella on the thermal behavior and surface morphology of char during the co-pyrolysis process were explored. Thermogravimetric and iso-conversional methods were applied to analyzing the pyrolytic and… read more here.
Keywords: pyrolysis; nannochloropsis chlorella; chlorella; rank coal ... See more keywords
Study of sodium lignosulfonate prepare low-rank coal-water slurry: Experiments and simulations
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Chemical Engineering"
DOI: 10.1016/j.cjche.2020.07.064
Abstract: Abstract The effect of sodium lignosulfonate (SL) as additive on the preparation of low-rank coal-water slurry (LCWS) was studied by experiments and molecular dynamics (MD) simulations. The experimental results show that the appropriate amount of… read more here.
Keywords: rank coal; water; low rank; coal water ... See more keywords
Catalytic pyrolysis of low-rank coal using Fe-carbon composite as a catalyst
Sign Up to like & getrecommendations! Published in 2019 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2019.111978
Abstract: Abstract In this study, CO2-cofeeding pyrolysis of low-rank coal (LRC) was performed to quest the mechanistic effects of CO2 on the CO enhancement. The thermogravimetric analysis (TGA) test and lab-scale pyrolysis of LRC informed that… read more here.
Keywords: pyrolysis low; pyrolysis; carbon; rank coal ... See more keywords
Enhanced combustion processes of liquid carbon dioxide (LCO2)–low rank coal slurry at high pressures
Sign Up to like & getrecommendations! Published in 2021 at "Energy"
DOI: 10.1016/j.energy.2021.121566
Abstract: Abstract It is difficult to evaporate water and burn volatile content at high pressures owing to the conflict in boiling temperatures of two components in the coal. The evaporation of water is critical for low… read more here.
Keywords: rank coal; water; low rank; coal slurry ... See more keywords
Characteristics of pore structure and fractal dimension of low-rank coal: A case study of Lower Jurassic Xishanyao coal in the southern Junggar Basin, NW China
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DOI: 10.1016/j.fuel.2016.11.069
Abstract: Abstract In this study, a series of laboratory experiments were performed to firstly analyze the characteristics of the pore structure in low-rank coal (R o 1000 nm), with a poor development of mesopores (100–1000 nm). The fractal… read more here.
Keywords: low rank; pore structure; rank coal; coal ... See more keywords
Influence of surface chemistry on interfacial properties of low to high rank coal seams
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DOI: 10.1016/j.fuel.2017.01.027
Abstract: Abstract Wettability of CO 2 /water/coal systems is a fundamental petro-physical parameter, which governs the fluid flow and distribution in coal seams and thus directly affects CO 2 -storage and methane recovery from unmineable coal… read more here.
Keywords: high rank; coal seams; chemistry; rank coal ... See more keywords
Enhancement of slurryability and heating value of coal water slurry (CWS) by torrefaction treatment of low rank coal (LRC)
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DOI: 10.1016/j.fuel.2017.03.016
Abstract: Abstract To improve cold gas efficiency of entrained-flow gasification, coal water slurry (CWS) as a fuel must have high heating value at low viscosity. Especially, considering unstable supply of bituminous coal, the preparation of CWS… read more here.
Keywords: low rank; cws; heating value; rank coal ... See more keywords
Experimental comparisons of gas adsorption, sorption induced strain, diffusivity and permeability for low and high rank coals
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DOI: 10.1016/j.fuel.2018.07.141
Abstract: Abstract Because of coal pore structure, the adsorption and diffusion behaviors are quite different for low and high rank coals. Differences of gas adsorption-diffusion and adsorption deformation of low and high rank coal and its… read more here.
Keywords: adsorption; high rank; permeability; rank coal ... See more keywords
Enhancement of the surface hydrophobicity of low-rank coal by adsorbing DTAB: An experimental and molecular dynamics simulation study
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DOI: 10.1016/j.fuel.2018.10.156
Abstract: Abstract This study investigated the mechanism of improving the surface hydrophobicity of low-rank coal by adsorbing dodecyltrimethylammonium bromide (DTAB). Experimental tests were conducted to analyze the adsorption characteristic of DTAB on the coal surface including… read more here.
Keywords: rank coal; surface; low rank; adsorption ... See more keywords