Experiment and analysis on the heterogeneity of CO2 adsorption-transport by microrocks in coal matrix
Guosong Jing, Qian Zhao, Ziqiang Jin
TL;DR
This study uses X-ray CT to analyze how CO2 adsorption varies in coal matrix due to mineral distribution and density differences.
Contribution
The paper reveals the heterogeneity of CO2 adsorption in coal cores influenced by mineral content and density.
Findings
Coal regions with higher mineral content have lower CO2 adsorption capacity.
CO2 concentration decreases linearly along the coal core's axial direction.
Adsorption is highly uneven, shown by significant variations in voxel density before and after gas injection.
Abstract
In order to study gas adsorption performance effected by micro-rock in coal matrix, dual energy X-ray CT was used to calculate the density change of coal core before and after gas injection, which can obtain the CO2 concentration (adsorption amount) in coal core, and reveal the uneven characteristics of CO2 adsorption by minerals. The research results show that coal core in the region where minerals exist has a higher density, while the density of the coal matrix is smaller. Regions with higher coal density (more minerals) have weaker adsorption capacity for CO2. The CO2 concentration in coal core decreases approximately linearly along the axial direction of coal core from the gas injection end to the outlet section. The average voxel density is basically the same at the same coal core section before and after gas injection, which indicates that the coal matrix recovers and approaches…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsCoal Properties and Utilization · Heat and Mass Transfer in Porous Media · Hydrocarbon exploration and reservoir analysis