Sentence examples for coal structure from inspiring English sources
From the structural characterization results above, we know that the coal structure has undergone a fundamental change after the mixed acids/ultrasound treatment.
The distribution of the synergetic regions is obviously controlled by the coal structure.
Almost all CBM wells with type I coal structure and most CBM wells with type II coal structure have the first productivity pattern, and part wells with type II coal structure and all wells with type III coal structure present the second productivity pattern.
The results show that the removal of minerals increases the degree of order and graphitization of the coal structure.
Two samples with different coal structure types, undeformed coal and granulated coal, were collected from the same coal seam.
By contrast, indirect liquefaction methods break down the coal structure all the way to a synthesis gas mixture (carbon monoxide and hydrogen), and these molecules are used to rebuild the desired liquid hydrocarbon molecules.
In addition, changes in coal seam structure, due to structural stress and the destruction of coal structures caused by the rheology of coal seams, are the major factors resulting in the gas outbursts of coalmines (Hao et al. 2000; Diaz Aguado and Nicieza 2007).
Coal permeability is a measure of the ability for fluids to flow through coal structures.
The selected logging data was conducted cluster analysis to identify the coal structures of coring wells and to predict the coal structures of non-coring wells.
In this study, coal structures were classified into five categories, including integrated, blocky, cataclastic, granulated and mylonitized.
Understanding of the coal structures helps to predict the behaviour of coal at various processes.
