Possibilities and potentials of geological co-storage CO2 and SO2 in China

doi:10.1016/j.egypro.2011.02.605

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	Possibilities and potentials of geological co-storage CO2 and SO2 in China
	Li, Qi; Li, Xiaochun; Wei, Ning; Fang, Zhiming
	2011
会议日期	SEP 19-23, 2010
会议地点	Amsterdam, NETHERLANDS
关键词	Acid gas CCS H2S SO2 SCCS numerical simulations potential site
DOI	10.1016/j.egypro.2011.02.605
页码	6015-6020
英文摘要	Carbon capture and storage (CCS) is widely accepted as one of main solutions to mitigate global warming in the world. However, the still-high cost of CCS is one of the major concerns, in particular in developing China. In the other hand, emission control of H2S and SO2 has already become the urgent need, and the reduction target has been set in the 11th Five-Year Plan of China. Therefore, co-storage of CO2+SO2 or CO2+H2S may be an effective way to reduce CCS cost, e. g. due to saving the de-sulphur device, and enable CCS to has an earlier deployment opportunity. In this paper, we try to, at first, reveal some key problems, i.e., trapping mechanism, injectivity and leakage risk, for co-injection and co-storage of CO2 and the strong acid SO2 into subsurface spaces in a certain gas field in China. The output of this gas field includes about 6.8% H2S and 4.6% CO2. Then, we want to insight into the possibilities and potentials of co-storage of CO2+SO2 by numerical studies. After widely referring all opened and published scientifical and technical literature, we develop a model to study a porous media system associated with the thermo-hydro-chemical coupling interactions. The hydrogeology and mineralogy of the injected formation are extracted from the historical materials of the gas field. We have performed several numerical simulations with consideration of a sandstone-clay sequence under acid-gas injection conditions. The clay formation is supposed as a sealed cap rock for the co-storage disposal system. The study examines the impact of SO2 co-injection on the pH of formation brine. Co-injection of CO2 with SO2 results in a larger and more strongly acidified zone, and alteration differs substantially from that caused by the injection of CO2 alone. The mineral alteration induced by injection of CO2 with SO2 leads to corresponding changes in porosity. Significant increases in porosity occur in the acidified zones where mineral dissolution dominates. (C) 2011 Published by Elsevier Ltd.
会议录	10TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	AMSTERDAM
语种	英语
WOS研究方向	Energy & Fuels ; Environmental Sciences & Ecology
WOS记录号	WOS:000298299706089
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4574]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Li, Qi,Li, Xiaochun,Wei, Ning,et al. Possibilities and potentials of geological co-storage CO2 and SO2 in China[C]. 见:. Amsterdam, NETHERLANDS. SEP 19-23, 2010.