Numerical modeling of co-injection of N-2 and O-2 with CO2 into aquifers at the Tongliao CCS site
文献类型：期刊论文
| 作者 | Jiang, Zhenjiao2; Li, Xiaochun1 ; Li, Jun1; Lei, Hongwu1
|
| 刊名 | INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
 |
| 出版日期 | 2016 |
| 卷号 | 54页码:228-241 |
| 关键词 | CO2 geologic sequestration CO2-N-2-O-2-brine system Solubility model Reactive transport Numerical simulation |
| ISSN号 | 1750-5836 |
| DOI | 10.1016/j.ijggc.2016.09.010 |
| 英文摘要 | Co-injection of impurities such as N-2 and O-2 with CO2 into aquifers is considered as an economical strategy for CO2 capture and storage (CCS). Compared to pure CO2 injection, impurities contained in CO2 stream will affect geophysical and geochemical properties of the systems and further affect flow and reactive transport processes. This study establishes a mutual solubility model for CO2N2O2-brine systems with pressure up to 600 bar, temperature up to 100 degrees C and salinity up to 6 mol/kg water by using the fugacity-activity method for the phase equilibrium. The model is then incorporated into TOUGH2/EOS7C and TOUGHREACT, forming a new improved module we call EOS7Cm. EOS7Cm is applied to simulate the reactive transport process of co-injection of air with CO2 into a shallow aquifer at the Tongliao field experiment using a 2-D radial homogeneous and anisotropic model. The fast reactive calcite and dolomite are considered as the only reactive mineral in the model. The results fit with the flow and reactive phenomenon observed at the site. It is shown that chromatographic partitioning processes of impurities occur in both gas and aqueous phases due to the difference in the solubility between CO2 and impurities. The front of gaseous O-2 slightly lags behind that of gaseous N-2, while gaseous CO2 lags behind gaseous O-2. The distributions of the dissolved gases in the aqueous phase are similar to that in the gas phase. After the CO2 breakthrough the pH drops rapidly to about 5.0, which pronounces the dissolution of carbonate minerals. The ratio of N-2 and O-2 does not significantly impact the distribution pattern of gas species, but it affects the transport distance of the gases and the percentage of gas species at the gas front. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000387781500018 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3948]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ |
| 推荐引用方式 GB/T 7714 | Jiang, Zhenjiao,Li, Xiaochun,Li, Jun,et al. Numerical modeling of co-injection of N-2 and O-2 with CO2 into aquifers at the Tongliao CCS site[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2016,54:228-241. |
| APA | Jiang, Zhenjiao,Li, Xiaochun,Li, Jun,&Lei, Hongwu.(2016).Numerical modeling of co-injection of N-2 and O-2 with CO2 into aquifers at the Tongliao CCS site.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,54,228-241. |
| MLA | Jiang, Zhenjiao,et al."Numerical modeling of co-injection of N-2 and O-2 with CO2 into aquifers at the Tongliao CCS site".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 54(2016):228-241. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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