Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT
Gas diffusion-sorption is a critical step in coalbed methane (CBM) exploitation and carbon dioxide sequestration. Because of the particularity of gas physical properties, it is difficult to visualize the gas diffusion-sorption process in coal by experimental methods. Due to the limitation of experim...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8835848 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566095733587968 |
|---|---|
| author | Yingfeng Sun Yixin Zhao Hongwei Zhang Cun Zhang |
| author_facet | Yingfeng Sun Yixin Zhao Hongwei Zhang Cun Zhang |
| author_sort | Yingfeng Sun |
| collection | DOAJ |
| description | Gas diffusion-sorption is a critical step in coalbed methane (CBM) exploitation and carbon dioxide sequestration. Because of the particularity of gas physical properties, it is difficult to visualize the gas diffusion-sorption process in coal by experimental methods. Due to the limitation of experimental approaches to image the three-dimensional coal pore structure, it is impossible to obtain the three-dimensional pore structure images of coal. As a result, the visualization of gas diffusion-sorption in coal pore structure by numerical ways is impossible. In this study, gas diffusion coefficients were firstly estimated by experiments. Then, a gas diffusion-sorption coupled model was developed which can be applied to the nanoscale geometry imaged by synchrotron radiation nano-CT. The dynamic process of gas diffusion and ad-/desorption in the nanoscale microstructure of coal was visualized by the developed gas diffusion-adsorption coupled model and the numerical simulation based on MATLAB. The simulation results show a good agreement with the experimental results. The gas diffusion-sorption coupled model and numerical method can help to investigate the effect of microstructure on gas diffusion and ad-/desorption and provides a possibility to investigate the multiscale gas transportation and adsorption in coal pore-fracture system. |
| format | Article |
| id | doaj-art-c3f70e845bc54ee38603ffaa570e0ffb |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-c3f70e845bc54ee38603ffaa570e0ffb2025-02-03T01:05:13ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88358488835848Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CTYingfeng Sun0Yixin Zhao1Hongwei Zhang2Cun Zhang3Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, ChinaBeijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, ChinaBeijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, ChinaBeijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, ChinaGas diffusion-sorption is a critical step in coalbed methane (CBM) exploitation and carbon dioxide sequestration. Because of the particularity of gas physical properties, it is difficult to visualize the gas diffusion-sorption process in coal by experimental methods. Due to the limitation of experimental approaches to image the three-dimensional coal pore structure, it is impossible to obtain the three-dimensional pore structure images of coal. As a result, the visualization of gas diffusion-sorption in coal pore structure by numerical ways is impossible. In this study, gas diffusion coefficients were firstly estimated by experiments. Then, a gas diffusion-sorption coupled model was developed which can be applied to the nanoscale geometry imaged by synchrotron radiation nano-CT. The dynamic process of gas diffusion and ad-/desorption in the nanoscale microstructure of coal was visualized by the developed gas diffusion-adsorption coupled model and the numerical simulation based on MATLAB. The simulation results show a good agreement with the experimental results. The gas diffusion-sorption coupled model and numerical method can help to investigate the effect of microstructure on gas diffusion and ad-/desorption and provides a possibility to investigate the multiscale gas transportation and adsorption in coal pore-fracture system.http://dx.doi.org/10.1155/2020/8835848 |
| spellingShingle | Yingfeng Sun Yixin Zhao Hongwei Zhang Cun Zhang Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT Geofluids |
| title | Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT |
| title_full | Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT |
| title_fullStr | Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT |
| title_full_unstemmed | Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT |
| title_short | Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT |
| title_sort | visualization of gas diffusion sorption in coal a study based on synchrotron radiation nano ct |
| url | http://dx.doi.org/10.1155/2020/8835848 |
| work_keys_str_mv | AT yingfengsun visualizationofgasdiffusionsorptionincoalastudybasedonsynchrotronradiationnanoct AT yixinzhao visualizationofgasdiffusionsorptionincoalastudybasedonsynchrotronradiationnanoct AT hongweizhang visualizationofgasdiffusionsorptionincoalastudybasedonsynchrotronradiationnanoct AT cunzhang visualizationofgasdiffusionsorptionincoalastudybasedonsynchrotronradiationnanoct |