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Nie et al. (2016) performed experiments of sorption characteristics of methane in various rank coal samples at different moisture contents and concluded that the effect of moisture content on a ...
Jan 01, 2014· Read "Coal sorption characteristics and coal surface tension, International Journal of Oil, Gas and Coal Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Dec 15, 2017· The adsorptionswelling and permeability characteristics of natural and reconstituted anthracite coals. ... Permeability characteristic of coal in the stressstrain course has been investigated in previous papers, ... S. HołdaChanges in mechanical properties of coal due to sorption .
The study of gas sorption characteristics is important for practical assessment of coal bed methane (CBM) production and CO2 sequestration in coal seam.
Influence of temperature on coal sorption characteristics and the theory of coal surface free energy Lei Zhanga,*, Naj Aziza, Ting X Rena, Zhongwei Wanga a University of Wollongong, Wollongong, NSW2500, Australia Abstract An experimental study was undertaken to examine the sorption and desorption characteristics of coal at
The coal selected for experiments was a bituminous steam coal with %wt ash content. The shale sample was characterized by rather low TOC (%) but high clay minerals content. The purpose of the study was to compare the high pressure CO 2 sorption characteristics of coal and gas shale and relate it to the particle size of samples subjected ...
Abstract. Enhanced coalbed methane (ECBM) in deep coal seams is being actively investigated around the world. Since the in situ coal seams are always saturated with water, methane sorption behavior on coal in the presence of water can help accurately assess the amount of recoverable methane.
Chemical and petrographic compositions of coal are the measures of maturity and type of organic matter that control the methane sorption characteristics of the coal. 99% of Indian coal occurrences are contributed by lower Gondwana sequences housed in two major geologic formations, younger Raniganj and older Barakar.
2011 Underground Coal Operators'' Conference The AusIMM Illawarra Branch 10 – 11 February 2011 269 INFLUENCE OF TEMPERATURE ON THE GAS CONTENT OF COAL AND SORPTION MODELLING Lei Zhang,1Naj Aziz, Ting Ren and Zhongwei Wang ABSTRACT: An experimental study was undertaken to examine the sorption and desorption characteristics of coal at temperatures of .
Gas Sorption Characteristics of Tectonically Deformed Coals and Their Implications on Gas Drainage and Outburst Control ... Levine, 1996, Harpalani and Chen, 1997). The gas sorption behavior of coal is controlled by the pore structure of coal, which is significantly influenced by the paleogeologic evolutions of the coal formation. ...
Abstract. The study of gas sorption characteristics is important for practical assessment of coal bed methane (CBM) production and CO 2 sequestration in coal seam. Adsorption isotherm is one of the critical parameters for the establishment of production as well as injection well.
of sample cell. Hence, coal particle size had a significant influence on the coal sorption characteristics including sorption capacity and desorption hysteresis for CO2 and CH4, especially calculated with dry basis of coal. In this study, the 150212 um (150 um) coal samples achieved higher sorption .
Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time. Sorption tests were carried out by the indirect gravimetric method for determining gas content in coal. Various coal particle sizes were tested in addition to 54 mm diameter coal core.
According to the literature, the grain size of coal used in adsorption testing affects the measured gas storage capacity and the use of finely ground coal samples in sorption testing leads to a ...
Sorption characteristic of coal, Particle Size, Gas Type and Time. Underground Coal Operators'' Conference (pp. 207215). Wollongong, Australia: University of Wollongong.
onto the coal surface. It is generally analyzed using the sorption characteristics between coal and gas and a sorption isotherm with pressure [14]. The indirect method usually takes less time, and results are more easily obtained. However, it has the following disadvantages: (1) the physical properties of coal such as ash, moisture, cleat, and ...
2009 Coal Operators'' Conference The AusIMM Illawarra Branch 208 12 – 13 February 2009 SORPTION CHARACTERISTIC OF COAL, PARTICLE SIZE, GAS TYPE AND TIME Raul Florentin1, Naj Aziz1, Dennis Black1 and Long Nghiem1 ABSTRACT: Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time.
Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time. Sorption tests were carried out by the indirect gravimetric method for determining gas content in coal. Various coal particle sizes were tested in addition to 54 mm diameter coal core.
Chemical and petrographic compositions of coal are the measures of maturity and type of organic matter that control the methane sorption characteristics of the coal. 99% of Indian coal occurrences ...
Some characteristics of coal were also investigated, these were namely, the spectra of surface functional groups and the weight loss on evacuation in the temperature range 30–140°C. Adsorption of water is related to the surface functional groups rather than to the extent of the surface.
Introduction Gas sorption in coal has been studied over the years by many researchers [1, 2, 3], and in recent years, the coal sorption characteristics at high temperatures, beyond the normal temperature of 20 ~ 29 °C, have been identified as an attractive option which can shed light on the behaviour of gas * Corresponding author.
The theory of coal surface free energy was found to be capable of explaining coal sorption characteristics. These findings provide the basic knowledge for a better understanding of coal sorption characteristics associated with coal seam gas drainage, which will benefit ventilation and degasification design and hence help to prevent coal mine ...
Role of coal type and rank on methane sorption characteristics of Bowen Basin, Australia coals. ... The Langmuir volume (V L) physically represents the monolayer adsorption capacity of the coal and is an important characteristic of the samples. The Langmuir pressure (P L) ...
Abstract. Methane production from coal seams has been actively pursued in the since the mid1970''s. This resource is regarded as an unconventional natural gas supply due to several unique characteristics of the reservoir, including: twophase (water and gas) flow, low effective permeability to gas, and the majority Of the methane being held in an adsorbed state on the internal surfaces of ...
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