当前位置: X-MOL 学术Adsorp. Sci. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Impact of tectonic deformation on coal methane adsorption capacity
Adsorption Science & Technology ( IF 2.8 ) Pub Date : 2019-09-26 , DOI: 10.1177/0263617419878541
Wu Li 1 , Bo Jiang 1 , Yan-Ming Zhu 1
Affiliation  

Tectonic deformation can cause significant changes in the physical and chemical structures of coal by damaging the macrostructure and macromolecular composition. For thorough research on the coal tectonic deformation impacts on gas adsorption capacity, this paper collected and summarized the parameters of experimental adsorption isotherms and coal macerals, conducted proximate and ultimate analyses, and systematically discussed the adsorption properties of different structures of coals and the influence of temperature and pressure on coal adsorption. Furthermore, the semi-quantitative relationships between the structural parameters of coal and its methane adsorption capacity are explored. The results show that (1) due to different tectonic stresses, the molecular and porous structures of different types of tectonic coal exhibit significant differences (e.g. sample N25, which is in a fault zone, has the highest methane adsorption capacity), and (2) coal methane adsorption capacity decreases along with increasing temperature. At a pressure of 12 MPa, primary coal (N32) showed Langmuir volume (VL) values of 15.38, 9.58, and 7.86 cm3/g and Langmuir pressure (PL) values of 3.82, 2.07, and 1.81 MPa at temperatures of 30°C, 50°C, and 70°C, respectively. (3) The Langmuir volume appears to have a linear relationship with parameters ID1/IG, Al/OX, and A-factor, as well as a parabolic curve relationship with fa, thereby illustrating that increases of apparent aromaticity can raise CH4 adsorption on coal.

中文翻译:

构造变形对煤层气吸附能力的影响

构造变形会破坏宏观结构和大分子组成,从而导致煤的物理和化学结构发生显着变化。为深入研究煤构造变形对瓦斯吸附能力的影响,本文收集并总结了实验吸附等温线和煤质的参数,进行了近似分析和极限分析,系统地讨论了煤不同结构的吸附特性及其对瓦斯吸附能力的影响。煤吸附的温度和压力。此外,还探讨了煤的结构参数与其甲烷吸附能力之间的半定量关系。结果表明(1)由于不同的构造应力,不同类型构造煤的分子结构和孔隙结构表现出显着差异(如样品N25,处于断裂带,甲烷吸附能力最高),(2)煤的甲烷吸附能力随温度升高而降低。在 12 MPa 的压力下,原煤 (N32) 的朗缪尔体积 (VL) 值为 15.38、9.58 和 7.86 cm3/g,朗缪尔压力 (PL) 值在 30°C 的温度下为 3.82、2.07 和 1.81 MPa 、50°C 和 70°C,分别。(3) Langmuir 体积与参数 ID1/IG、Al/OX 和 A-factor 呈线性关系,与 fa 呈抛物线关系,说明表观芳香度的增加可以提高煤对 CH4 的吸附. (2)煤的甲烷吸附能力随着温度的升高而降低。在 12 MPa 的压力下,原煤 (N32) 的朗缪尔体积 (VL) 值为 15.38、9.58 和 7.86 cm3/g,朗缪尔压力 (PL) 值为 3.82、2.07 和 1.81 MPa 在 30°C 的温度下、50°C 和 70°C,分别。(3) Langmuir 体积与参数 ID1/IG、Al/OX 和 A-factor 呈线性关系,与 fa 呈抛物线关系,说明表观芳香度的增加可以提高煤对 CH4 的吸附. (2)煤的甲烷吸附能力随着温度的升高而降低。在 12 MPa 的压力下,原煤 (N32) 的朗缪尔体积 (VL) 值为 15.38、9.58 和 7.86 cm3/g,朗缪尔压力 (PL) 值为 3.82、2.07 和 1.81 MPa 在 30°C 的温度下、50°C 和 70°C,分别。(3) Langmuir 体积与参数 ID1/IG、Al/OX 和 A-factor 呈线性关系,与 fa 呈抛物线关系,说明表观芳香度的增加可以提高煤对 CH4 的吸附. 分别。(3) Langmuir 体积与参数 ID1/IG、Al/OX 和 A-factor 呈线性关系,与 fa 呈抛物线关系,说明表观芳香度的增加可以提高煤对 CH4 的吸附. 分别。(3) Langmuir 体积与参数 ID1/IG、Al/OX 和 A-factor 呈线性关系,与 fa 呈抛物线关系,说明表观芳香度的增加可以提高煤对 CH4 的吸附.
更新日期:2019-09-26
down
wechat
bug